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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#define WAIT_FOR_HALP_VOTE_MS 100
27#define WAIT_FOR_SCAN_ABORT_MS 1000
28
29bool debug_fw; /* = false; */
30module_param(debug_fw, bool, S_IRUGO);
31MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug");
32
33static bool oob_mode;
34module_param(oob_mode, bool, S_IRUGO);
35MODULE_PARM_DESC(oob_mode,
36 " enable out of the box (OOB) mode in FW, for diagnostics and certification");
37
38bool no_fw_recovery;
39module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR);
40MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery");
41
42/* if not set via modparam, will be set to default value of 1/8 of
43 * rx ring size during init flow
44 */
45unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT;
46module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO);
47MODULE_PARM_DESC(rx_ring_overflow_thrsh,
48 " RX ring overflow threshold in descriptors.");
49
50/* We allow allocation of more than 1 page buffers to support large packets.
51 * It is suboptimal behavior performance wise in case MTU above page size.
52 */
53unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD;
54static int mtu_max_set(const char *val, const struct kernel_param *kp)
55{
56 int ret;
57
58 /* sets mtu_max directly. no need to restore it in case of
59 * illegal value since we assume this will fail insmod
60 */
61 ret = param_set_uint(val, kp);
62 if (ret)
63 return ret;
64
65 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU)
66 ret = -EINVAL;
67
68 return ret;
69}
70
71static const struct kernel_param_ops mtu_max_ops = {
72 .set = mtu_max_set,
73 .get = param_get_uint,
74};
75
76module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO);
77MODULE_PARM_DESC(mtu_max, " Max MTU value.");
78
79static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT;
80static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT;
81static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT;
82
83static int ring_order_set(const char *val, const struct kernel_param *kp)
84{
85 int ret;
86 uint x;
87
88 ret = kstrtouint(val, 0, &x);
89 if (ret)
90 return ret;
91
92 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX))
93 return -EINVAL;
94
95 *((uint *)kp->arg) = x;
96
97 return 0;
98}
99
100static const struct kernel_param_ops ring_order_ops = {
101 .set = ring_order_set,
102 .get = param_get_uint,
103};
104
105module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO);
106MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order");
107module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO);
108MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order");
109module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO);
110MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order");
111
112#define RST_DELAY (20) /* msec, for loop in @wil_target_reset */
113#define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */
114
115/*
116 * Due to a hardware issue,
117 * one has to read/write to/from NIC in 32-bit chunks;
118 * regular memcpy_fromio and siblings will
119 * not work on 64-bit platform - it uses 64-bit transactions
120 *
121 * Force 32-bit transactions to enable NIC on 64-bit platforms
122 *
123 * To avoid byte swap on big endian host, __raw_{read|write}l
124 * should be used - {read|write}l would swap bytes to provide
125 * little endian on PCI value in host endianness.
126 */
127void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
128 size_t count)
129{
130 u32 *d = dst;
131 const volatile u32 __iomem *s = src;
132
133 /* size_t is unsigned, if (count%4 != 0) it will wrap */
134 for (count += 4; count > 4; count -= 4)
135 *d++ = __raw_readl(s++);
136}
137
138void wil_memcpy_fromio_halp_vote(struct wil6210_priv *wil, void *dst,
139 const volatile void __iomem *src, size_t count)
140{
141 wil_halp_vote(wil);
142 wil_memcpy_fromio_32(dst, src, count);
143 wil_halp_unvote(wil);
144}
145
146void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
147 size_t count)
148{
149 volatile u32 __iomem *d = dst;
150 const u32 *s = src;
151
152 for (count += 4; count > 4; count -= 4)
153 __raw_writel(*s++, d++);
154}
155
156void wil_memcpy_toio_halp_vote(struct wil6210_priv *wil,
157 volatile void __iomem *dst,
158 const void *src, size_t count)
159{
160 wil_halp_vote(wil);
161 wil_memcpy_toio_32(dst, src, count);
162 wil_halp_unvote(wil);
163}
164
165static void wil_disconnect_cid(struct wil6210_priv *wil, int cid,
166 u16 reason_code, bool from_event)
167__acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
168{
169 uint i;
170 struct net_device *ndev = wil_to_ndev(wil);
171 struct wireless_dev *wdev = wil->wdev;
172 struct wil_sta_info *sta = &wil->sta[cid];
173
174 might_sleep();
175 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid,
176 sta->status);
177 /* inform upper/lower layers */
178 if (sta->status != wil_sta_unused) {
179 if (!from_event)
180 wmi_disconnect_sta(wil, sta->addr, reason_code, true);
181
182 switch (wdev->iftype) {
183 case NL80211_IFTYPE_AP:
184 case NL80211_IFTYPE_P2P_GO:
185 /* AP-like interface */
186 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL);
187 break;
188 default:
189 break;
190 }
191 sta->status = wil_sta_unused;
192 }
193 /* reorder buffers */
194 for (i = 0; i < WIL_STA_TID_NUM; i++) {
195 struct wil_tid_ampdu_rx *r;
196
197 spin_lock_bh(&sta->tid_rx_lock);
198
199 r = sta->tid_rx[i];
200 sta->tid_rx[i] = NULL;
201 wil_tid_ampdu_rx_free(wil, r);
202
203 spin_unlock_bh(&sta->tid_rx_lock);
204 }
205 /* crypto context */
206 memset(sta->tid_crypto_rx, 0, sizeof(sta->tid_crypto_rx));
207 memset(&sta->group_crypto_rx, 0, sizeof(sta->group_crypto_rx));
208 /* release vrings */
209 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
210 if (wil->vring2cid_tid[i][0] == cid)
211 wil_vring_fini_tx(wil, i);
212 }
213 /* statistics */
214 memset(&sta->stats, 0, sizeof(sta->stats));
215}
216
217static bool wil_is_connected(struct wil6210_priv *wil)
218{
219 int i;
220
221 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
222 if (wil->sta[i].status == wil_sta_connected)
223 return true;
224 }
225
226 return false;
227}
228
229static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid,
230 u16 reason_code, bool from_event)
231{
232 int cid = -ENOENT;
233 struct net_device *ndev = wil_to_ndev(wil);
234 struct wireless_dev *wdev = wil->wdev;
235
236 if (unlikely(!ndev))
237 return;
238
239 might_sleep();
240 wil_info(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid,
241 reason_code, from_event ? "+" : "-");
242
243 /* Cases are:
244 * - disconnect single STA, still connected
245 * - disconnect single STA, already disconnected
246 * - disconnect all
247 *
248 * For "disconnect all", there are 3 options:
249 * - bssid == NULL
250 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff)
251 * - bssid is our MAC address
252 */
253 if (bssid && !is_broadcast_ether_addr(bssid) &&
254 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) {
255 cid = wil_find_cid(wil, bssid);
256 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n",
257 bssid, cid, reason_code);
258 if (cid >= 0) /* disconnect 1 peer */
259 wil_disconnect_cid(wil, cid, reason_code, from_event);
260 } else { /* all */
261 wil_dbg_misc(wil, "Disconnect all\n");
262 for (cid = 0; cid < WIL6210_MAX_CID; cid++)
263 wil_disconnect_cid(wil, cid, reason_code, from_event);
264 }
265
266 /* link state */
267 switch (wdev->iftype) {
268 case NL80211_IFTYPE_STATION:
269 case NL80211_IFTYPE_P2P_CLIENT:
270 wil_bcast_fini(wil);
271 wil_update_net_queues_bh(wil, NULL, true);
272 netif_carrier_off(ndev);
273
274 if (test_bit(wil_status_fwconnected, wil->status)) {
275 clear_bit(wil_status_fwconnected, wil->status);
276 cfg80211_disconnected(ndev, reason_code,
277 NULL, 0, false, GFP_KERNEL);
278 } else if (test_bit(wil_status_fwconnecting, wil->status)) {
279 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
280 WLAN_STATUS_UNSPECIFIED_FAILURE,
281 GFP_KERNEL);
282 }
283 clear_bit(wil_status_fwconnecting, wil->status);
284 break;
285 case NL80211_IFTYPE_AP:
286 case NL80211_IFTYPE_P2P_GO:
287 if (!wil_is_connected(wil)) {
288 wil_update_net_queues_bh(wil, NULL, true);
289 clear_bit(wil_status_fwconnected, wil->status);
290 } else {
291 wil_update_net_queues_bh(wil, NULL, false);
292 }
293 break;
294 default:
295 break;
296 }
297}
298
299static void wil_disconnect_worker(struct work_struct *work)
300{
301 struct wil6210_priv *wil = container_of(work,
302 struct wil6210_priv, disconnect_worker);
303
304 mutex_lock(&wil->mutex);
305 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false);
306 mutex_unlock(&wil->mutex);
307}
308
309static void wil_connect_timer_fn(ulong x)
310{
311 struct wil6210_priv *wil = (void *)x;
312 bool q;
313
314 wil_err(wil, "Connect timeout detected, disconnect station\n");
315
316 /* reschedule to thread context - disconnect won't
317 * run from atomic context.
318 * queue on wmi_wq to prevent race with connect event.
319 */
320 q = queue_work(wil->wmi_wq, &wil->disconnect_worker);
321 wil_dbg_wmi(wil, "queue_work of disconnect_worker -> %d\n", q);
322}
323
324static void wil_scan_timer_fn(ulong x)
325{
326 struct wil6210_priv *wil = (void *)x;
327
328 clear_bit(wil_status_fwready, wil->status);
329 wil_err(wil, "Scan timeout detected, start fw error recovery\n");
330 wil_fw_error_recovery(wil);
331}
332
333static int wil_wait_for_recovery(struct wil6210_priv *wil)
334{
335 if (wait_event_interruptible(wil->wq, wil->recovery_state !=
336 fw_recovery_pending)) {
337 wil_err(wil, "Interrupt, canceling recovery\n");
338 return -ERESTARTSYS;
339 }
340 if (wil->recovery_state != fw_recovery_running) {
341 wil_info(wil, "Recovery cancelled\n");
342 return -EINTR;
343 }
344 wil_info(wil, "Proceed with recovery\n");
345 return 0;
346}
347
348void wil_set_recovery_state(struct wil6210_priv *wil, int state)
349{
350 wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__,
351 wil->recovery_state, state);
352
353 wil->recovery_state = state;
354 wake_up_interruptible(&wil->wq);
355}
356
357bool wil_is_recovery_blocked(struct wil6210_priv *wil)
358{
359 return no_fw_recovery && (wil->recovery_state == fw_recovery_pending);
360}
361
362static void wil_fw_error_worker(struct work_struct *work)
363{
364 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
365 fw_error_worker);
366 struct wireless_dev *wdev = wil->wdev;
367
368 wil_dbg_misc(wil, "fw error worker\n");
369
370 if (!netif_running(wil_to_ndev(wil))) {
371 wil_info(wil, "No recovery - interface is down\n");
372 return;
373 }
374
375 /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO
376 * passed since last recovery attempt
377 */
378 if (time_is_after_jiffies(wil->last_fw_recovery +
379 WIL6210_FW_RECOVERY_TO))
380 wil->recovery_count++;
381 else
382 wil->recovery_count = 1; /* fw was alive for a long time */
383
384 if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) {
385 wil_err(wil, "too many recovery attempts (%d), giving up\n",
386 wil->recovery_count);
387 return;
388 }
389
390 wil->last_fw_recovery = jiffies;
391
392 wil_info(wil, "fw error recovery requested (try %d)...\n",
393 wil->recovery_count);
394 if (!no_fw_recovery)
395 wil->recovery_state = fw_recovery_running;
396 if (wil_wait_for_recovery(wil) != 0)
397 return;
398
399 mutex_lock(&wil->mutex);
400 switch (wdev->iftype) {
401 case NL80211_IFTYPE_STATION:
402 case NL80211_IFTYPE_P2P_CLIENT:
403 case NL80211_IFTYPE_MONITOR:
404 /* silent recovery, upper layers will see disconnect */
405 __wil_down(wil);
406 __wil_up(wil);
407 break;
408 case NL80211_IFTYPE_AP:
409 case NL80211_IFTYPE_P2P_GO:
410 wil_info(wil, "No recovery for AP-like interface\n");
411 /* recovery in these modes is done by upper layers */
412 break;
413 default:
414 wil_err(wil, "No recovery - unknown interface type %d\n",
415 wdev->iftype);
416 break;
417 }
418 mutex_unlock(&wil->mutex);
419}
420
421static int wil_find_free_vring(struct wil6210_priv *wil)
422{
423 int i;
424
425 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
426 if (!wil->vring_tx[i].va)
427 return i;
428 }
429 return -EINVAL;
430}
431
432int wil_tx_init(struct wil6210_priv *wil, int cid)
433{
434 int rc = -EINVAL, ringid;
435
436 if (cid < 0) {
437 wil_err(wil, "No connection pending\n");
438 goto out;
439 }
440 ringid = wil_find_free_vring(wil);
441 if (ringid < 0) {
442 wil_err(wil, "No free vring found\n");
443 goto out;
444 }
445
446 wil_dbg_wmi(wil, "Configure for connection CID %d vring %d\n",
447 cid, ringid);
448
449 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0);
450 if (rc)
451 wil_err(wil, "wil_vring_init_tx for CID %d vring %d failed\n",
452 cid, ringid);
453
454out:
455 return rc;
456}
457
458int wil_bcast_init(struct wil6210_priv *wil)
459{
460 int ri = wil->bcast_vring, rc;
461
462 if ((ri >= 0) && wil->vring_tx[ri].va)
463 return 0;
464
465 ri = wil_find_free_vring(wil);
466 if (ri < 0)
467 return ri;
468
469 wil->bcast_vring = ri;
470 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order);
471 if (rc)
472 wil->bcast_vring = -1;
473
474 return rc;
475}
476
477void wil_bcast_fini(struct wil6210_priv *wil)
478{
479 int ri = wil->bcast_vring;
480
481 if (ri < 0)
482 return;
483
484 wil->bcast_vring = -1;
485 wil_vring_fini_tx(wil, ri);
486}
487
488int wil_priv_init(struct wil6210_priv *wil)
489{
490 uint i;
491
492 wil_dbg_misc(wil, "%s()\n", __func__);
493
494 memset(wil->sta, 0, sizeof(wil->sta));
495 for (i = 0; i < WIL6210_MAX_CID; i++)
496 spin_lock_init(&wil->sta[i].tid_rx_lock);
497
498 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++)
499 spin_lock_init(&wil->vring_tx_data[i].lock);
500
501 mutex_init(&wil->mutex);
502 mutex_init(&wil->wmi_mutex);
503 mutex_init(&wil->probe_client_mutex);
504 mutex_init(&wil->p2p_wdev_mutex);
505 mutex_init(&wil->halp.lock);
506
507 init_completion(&wil->wmi_ready);
508 init_completion(&wil->wmi_call);
509 init_completion(&wil->halp.comp);
510
511 wil->bcast_vring = -1;
512 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
513 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil);
514 setup_timer(&wil->p2p.discovery_timer, wil_p2p_discovery_timer_fn,
515 (ulong)wil);
516
517 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker);
518 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker);
519 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker);
520 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker);
521 INIT_WORK(&wil->p2p.delayed_listen_work, wil_p2p_delayed_listen_work);
522
523 INIT_LIST_HEAD(&wil->pending_wmi_ev);
524 INIT_LIST_HEAD(&wil->probe_client_pending);
525 spin_lock_init(&wil->wmi_ev_lock);
526 spin_lock_init(&wil->net_queue_lock);
527 wil->net_queue_stopped = 1;
528 init_waitqueue_head(&wil->wq);
529
530 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi");
531 if (!wil->wmi_wq)
532 return -EAGAIN;
533
534 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service");
535 if (!wil->wq_service)
536 goto out_wmi_wq;
537
538 wil->last_fw_recovery = jiffies;
539 wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT;
540 wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT;
541 wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT;
542 wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT;
543
544 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT)
545 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT;
546 return 0;
547
548out_wmi_wq:
549 destroy_workqueue(wil->wmi_wq);
550
551 return -EAGAIN;
552}
553
554/**
555 * wil6210_disconnect - disconnect one connection
556 * @wil: driver context
557 * @bssid: peer to disconnect, NULL to disconnect all
558 * @reason_code: Reason code for the Disassociation frame
559 * @from_event: whether is invoked from FW event handler
560 *
561 * Disconnect and release associated resources. If invoked not from the
562 * FW event handler, issue WMI command(s) to trigger MAC disconnect.
563 */
564void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid,
565 u16 reason_code, bool from_event)
566{
567 wil_dbg_misc(wil, "%s()\n", __func__);
568
569 del_timer_sync(&wil->connect_timer);
570 _wil6210_disconnect(wil, bssid, reason_code, from_event);
571}
572
573void wil_priv_deinit(struct wil6210_priv *wil)
574{
575 wil_dbg_misc(wil, "%s()\n", __func__);
576
577 wil_set_recovery_state(wil, fw_recovery_idle);
578 del_timer_sync(&wil->scan_timer);
579 del_timer_sync(&wil->p2p.discovery_timer);
580 cancel_work_sync(&wil->disconnect_worker);
581 cancel_work_sync(&wil->fw_error_worker);
582 cancel_work_sync(&wil->p2p.discovery_expired_work);
583 cancel_work_sync(&wil->p2p.delayed_listen_work);
584 mutex_lock(&wil->mutex);
585 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false);
586 mutex_unlock(&wil->mutex);
587 wmi_event_flush(wil);
588 wil_probe_client_flush(wil);
589 cancel_work_sync(&wil->probe_client_worker);
590 destroy_workqueue(wil->wq_service);
591 destroy_workqueue(wil->wmi_wq);
592}
593
594static inline void wil_halt_cpu(struct wil6210_priv *wil)
595{
596 wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST);
597 wil_w(wil, RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST);
598}
599
600static inline void wil_release_cpu(struct wil6210_priv *wil)
601{
602 /* Start CPU */
603 wil_w(wil, RGF_USER_USER_CPU_0, 1);
604}
605
606static void wil_set_oob_mode(struct wil6210_priv *wil, bool enable)
607{
608 wil_info(wil, "%s: enable=%d\n", __func__, enable);
609 if (enable)
610 wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE);
611 else
612 wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE);
613}
614
615static int wil_target_reset(struct wil6210_priv *wil)
616{
617 int delay = 0;
618 u32 x, x1 = 0;
619
620 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name);
621
622 /* Clear MAC link up */
623 wil_s(wil, RGF_HP_CTRL, BIT(15));
624 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD);
625 wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST);
626
627 wil_halt_cpu(wil);
628
629 /* clear all boot loader "ready" bits */
630 wil_w(wil, RGF_USER_BL +
631 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0);
632 /* Clear Fw Download notification */
633 wil_c(wil, RGF_USER_USAGE_6, BIT(0));
634
635 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN);
636 /* XTAL stabilization should take about 3ms */
637 usleep_range(5000, 7000);
638 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS);
639 if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) {
640 wil_err(wil, "Xtal stabilization timeout\n"
641 "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x);
642 return -ETIME;
643 }
644 /* switch 10k to XTAL*/
645 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF);
646 /* 40 MHz */
647 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL);
648
649 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f);
650 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf);
651
652 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000);
653 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F);
654 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0);
655 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00);
656
657 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0);
658 wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0);
659
660 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0);
661 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0);
662 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0);
663 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
664
665 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003);
666 /* reset A2 PCIE AHB */
667 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);
668
669 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
670
671 /* wait until device ready. typical time is 20..80 msec */
672 do {
673 msleep(RST_DELAY);
674 x = wil_r(wil, RGF_USER_BL +
675 offsetof(struct bl_dedicated_registers_v0,
676 boot_loader_ready));
677 if (x1 != x) {
678 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x);
679 x1 = x;
680 }
681 if (delay++ > RST_COUNT) {
682 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n",
683 x);
684 return -ETIME;
685 }
686 } while (x != BL_READY);
687
688 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD);
689
690 /* enable fix for HW bug related to the SA/DA swap in AP Rx */
691 wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN |
692 BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC);
693
694 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY);
695 return 0;
696}
697
698static void wil_collect_fw_info(struct wil6210_priv *wil)
699{
700 struct wiphy *wiphy = wil_to_wiphy(wil);
701 u8 retry_short;
702 int rc;
703
704 rc = wmi_get_mgmt_retry(wil, &retry_short);
705 if (!rc) {
706 wiphy->retry_short = retry_short;
707 wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short);
708 }
709}
710
711void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r)
712{
713 le32_to_cpus(&r->base);
714 le16_to_cpus(&r->entry_size);
715 le16_to_cpus(&r->size);
716 le32_to_cpus(&r->tail);
717 le32_to_cpus(&r->head);
718}
719
720static int wil_get_bl_info(struct wil6210_priv *wil)
721{
722 struct net_device *ndev = wil_to_ndev(wil);
723 struct wiphy *wiphy = wil_to_wiphy(wil);
724 union {
725 struct bl_dedicated_registers_v0 bl0;
726 struct bl_dedicated_registers_v1 bl1;
727 } bl;
728 u32 bl_ver;
729 u8 *mac;
730 u16 rf_status;
731
732 wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL),
733 sizeof(bl));
734 bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version);
735 mac = bl.bl0.mac_address;
736
737 if (bl_ver == 0) {
738 le32_to_cpus(&bl.bl0.rf_type);
739 le32_to_cpus(&bl.bl0.baseband_type);
740 rf_status = 0; /* actually, unknown */
741 wil_info(wil,
742 "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n",
743 bl_ver, mac,
744 bl.bl0.rf_type, bl.bl0.baseband_type);
745 wil_info(wil, "Boot Loader build unknown for struct v0\n");
746 } else {
747 le16_to_cpus(&bl.bl1.rf_type);
748 rf_status = le16_to_cpu(bl.bl1.rf_status);
749 le32_to_cpus(&bl.bl1.baseband_type);
750 le16_to_cpus(&bl.bl1.bl_version_subminor);
751 le16_to_cpus(&bl.bl1.bl_version_build);
752 wil_info(wil,
753 "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n",
754 bl_ver, mac,
755 bl.bl1.rf_type, rf_status,
756 bl.bl1.baseband_type);
757 wil_info(wil, "Boot Loader build %d.%d.%d.%d\n",
758 bl.bl1.bl_version_major, bl.bl1.bl_version_minor,
759 bl.bl1.bl_version_subminor, bl.bl1.bl_version_build);
760 }
761
762 if (!is_valid_ether_addr(mac)) {
763 wil_err(wil, "BL: Invalid MAC %pM\n", mac);
764 return -EINVAL;
765 }
766
767 ether_addr_copy(ndev->perm_addr, mac);
768 ether_addr_copy(wiphy->perm_addr, mac);
769 if (!is_valid_ether_addr(ndev->dev_addr))
770 ether_addr_copy(ndev->dev_addr, mac);
771
772 if (rf_status) {/* bad RF cable? */
773 wil_err(wil, "RF communication error 0x%04x",
774 rf_status);
775 return -EAGAIN;
776 }
777
778 return 0;
779}
780
781static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err)
782{
783 u32 bl_assert_code, bl_assert_blink, bl_magic_number;
784 u32 bl_ver = wil_r(wil, RGF_USER_BL +
785 offsetof(struct bl_dedicated_registers_v0,
786 boot_loader_struct_version));
787
788 if (bl_ver < 2)
789 return;
790
791 bl_assert_code = wil_r(wil, RGF_USER_BL +
792 offsetof(struct bl_dedicated_registers_v1,
793 bl_assert_code));
794 bl_assert_blink = wil_r(wil, RGF_USER_BL +
795 offsetof(struct bl_dedicated_registers_v1,
796 bl_assert_blink));
797 bl_magic_number = wil_r(wil, RGF_USER_BL +
798 offsetof(struct bl_dedicated_registers_v1,
799 bl_magic_number));
800
801 if (is_err) {
802 wil_err(wil,
803 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n",
804 bl_assert_code, bl_assert_blink, bl_magic_number);
805 } else {
806 wil_dbg_misc(wil,
807 "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n",
808 bl_assert_code, bl_assert_blink, bl_magic_number);
809 }
810}
811
812static int wil_wait_for_fw_ready(struct wil6210_priv *wil)
813{
814 ulong to = msecs_to_jiffies(1000);
815 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to);
816
817 if (0 == left) {
818 wil_err(wil, "Firmware not ready\n");
819 return -ETIME;
820 } else {
821 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n",
822 jiffies_to_msecs(to-left), wil->hw_version);
823 }
824 return 0;
825}
826
827void wil_abort_scan(struct wil6210_priv *wil, bool sync)
828{
829 int rc;
830 struct cfg80211_scan_info info = {
831 .aborted = true,
832 };
833
834 lockdep_assert_held(&wil->p2p_wdev_mutex);
835
836 if (!wil->scan_request)
837 return;
838
839 wil_dbg_misc(wil, "Abort scan_request 0x%p\n", wil->scan_request);
840 del_timer_sync(&wil->scan_timer);
841 mutex_unlock(&wil->p2p_wdev_mutex);
842 rc = wmi_abort_scan(wil);
843 if (!rc && sync)
844 wait_event_interruptible_timeout(wil->wq, !wil->scan_request,
845 msecs_to_jiffies(
846 WAIT_FOR_SCAN_ABORT_MS));
847
848 mutex_lock(&wil->p2p_wdev_mutex);
849 if (wil->scan_request) {
850 cfg80211_scan_done(wil->scan_request, &info);
851 wil->scan_request = NULL;
852 }
853}
854
855/*
856 * We reset all the structures, and we reset the UMAC.
857 * After calling this routine, you're expected to reload
858 * the firmware.
859 */
860int wil_reset(struct wil6210_priv *wil, bool load_fw)
861{
862 int rc;
863
864 wil_dbg_misc(wil, "%s()\n", __func__);
865
866 WARN_ON(!mutex_is_locked(&wil->mutex));
867 WARN_ON(test_bit(wil_status_napi_en, wil->status));
868
869 if (debug_fw) {
870 static const u8 mac[ETH_ALEN] = {
871 0x00, 0xde, 0xad, 0x12, 0x34, 0x56,
872 };
873 struct net_device *ndev = wil_to_ndev(wil);
874
875 ether_addr_copy(ndev->perm_addr, mac);
876 ether_addr_copy(ndev->dev_addr, ndev->perm_addr);
877 return 0;
878 }
879
880 if (wil->hw_version == HW_VER_UNKNOWN)
881 return -ENODEV;
882
883 if (wil->platform_ops.notify) {
884 rc = wil->platform_ops.notify(wil->platform_handle,
885 WIL_PLATFORM_EVT_PRE_RESET);
886 if (rc)
887 wil_err(wil,
888 "%s: PRE_RESET platform notify failed, rc %d\n",
889 __func__, rc);
890 }
891
892 set_bit(wil_status_resetting, wil->status);
893
894 cancel_work_sync(&wil->disconnect_worker);
895 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false);
896 wil_bcast_fini(wil);
897
898 /* Disable device led before reset*/
899 wmi_led_cfg(wil, false);
900
901 /* prevent NAPI from being scheduled and prevent wmi commands */
902 mutex_lock(&wil->wmi_mutex);
903 bitmap_zero(wil->status, wil_status_last);
904 mutex_unlock(&wil->wmi_mutex);
905
906 mutex_lock(&wil->p2p_wdev_mutex);
907 wil_abort_scan(wil, false);
908 mutex_unlock(&wil->p2p_wdev_mutex);
909
910 wil_mask_irq(wil);
911
912 wmi_event_flush(wil);
913
914 flush_workqueue(wil->wq_service);
915 flush_workqueue(wil->wmi_wq);
916
917 wil_bl_crash_info(wil, false);
918 rc = wil_target_reset(wil);
919 wil_rx_fini(wil);
920 if (rc) {
921 wil_bl_crash_info(wil, true);
922 return rc;
923 }
924
925 rc = wil_get_bl_info(wil);
926 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */
927 rc = 0;
928 if (rc)
929 return rc;
930
931 wil_set_oob_mode(wil, oob_mode);
932 if (load_fw) {
933 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME,
934 WIL_FW2_NAME);
935
936 wil_halt_cpu(wil);
937 memset(wil->fw_version, 0, sizeof(wil->fw_version));
938 /* Loading f/w from the file */
939 rc = wil_request_firmware(wil, WIL_FW_NAME, true);
940 if (rc)
941 return rc;
942 rc = wil_request_firmware(wil, WIL_FW2_NAME, true);
943 if (rc)
944 return rc;
945
946 /* Mark FW as loaded from host */
947 wil_s(wil, RGF_USER_USAGE_6, 1);
948
949 /* clear any interrupts which on-card-firmware
950 * may have set
951 */
952 wil6210_clear_irq(wil);
953 /* CAF_ICR - clear and mask */
954 /* it is W1C, clear by writing back same value */
955 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0);
956 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0);
957
958 wil_release_cpu(wil);
959 }
960
961 /* init after reset */
962 wil->ap_isolate = 0;
963 reinit_completion(&wil->wmi_ready);
964 reinit_completion(&wil->wmi_call);
965 reinit_completion(&wil->halp.comp);
966
967 if (load_fw) {
968 wil_configure_interrupt_moderation(wil);
969 wil_unmask_irq(wil);
970
971 /* we just started MAC, wait for FW ready */
972 rc = wil_wait_for_fw_ready(wil);
973 if (rc)
974 return rc;
975
976 /* check FW is responsive */
977 rc = wmi_echo(wil);
978 if (rc) {
979 wil_err(wil, "%s: wmi_echo failed, rc %d\n",
980 __func__, rc);
981 return rc;
982 }
983
984 wil_collect_fw_info(wil);
985
986 if (wil->platform_ops.notify) {
987 rc = wil->platform_ops.notify(wil->platform_handle,
988 WIL_PLATFORM_EVT_FW_RDY);
989 if (rc) {
990 wil_err(wil,
991 "%s: FW_RDY notify failed, rc %d\n",
992 __func__, rc);
993 rc = 0;
994 }
995 }
996 }
997
998 return rc;
999}
1000
1001void wil_fw_error_recovery(struct wil6210_priv *wil)
1002{
1003 wil_dbg_misc(wil, "starting fw error recovery\n");
1004
1005 if (test_bit(wil_status_resetting, wil->status)) {
1006 wil_info(wil, "Reset already in progress\n");
1007 return;
1008 }
1009
1010 wil->recovery_state = fw_recovery_pending;
1011 schedule_work(&wil->fw_error_worker);
1012}
1013
1014int __wil_up(struct wil6210_priv *wil)
1015{
1016 struct net_device *ndev = wil_to_ndev(wil);
1017 struct wireless_dev *wdev = wil->wdev;
1018 int rc;
1019
1020 WARN_ON(!mutex_is_locked(&wil->mutex));
1021
1022 rc = wil_reset(wil, true);
1023 if (rc)
1024 return rc;
1025
1026 /* Rx VRING. After MAC and beacon */
1027 rc = wil_rx_init(wil, 1 << rx_ring_order);
1028 if (rc)
1029 return rc;
1030
1031 switch (wdev->iftype) {
1032 case NL80211_IFTYPE_STATION:
1033 wil_dbg_misc(wil, "type: STATION\n");
1034 ndev->type = ARPHRD_ETHER;
1035 break;
1036 case NL80211_IFTYPE_AP:
1037 wil_dbg_misc(wil, "type: AP\n");
1038 ndev->type = ARPHRD_ETHER;
1039 break;
1040 case NL80211_IFTYPE_P2P_CLIENT:
1041 wil_dbg_misc(wil, "type: P2P_CLIENT\n");
1042 ndev->type = ARPHRD_ETHER;
1043 break;
1044 case NL80211_IFTYPE_P2P_GO:
1045 wil_dbg_misc(wil, "type: P2P_GO\n");
1046 ndev->type = ARPHRD_ETHER;
1047 break;
1048 case NL80211_IFTYPE_MONITOR:
1049 wil_dbg_misc(wil, "type: Monitor\n");
1050 ndev->type = ARPHRD_IEEE80211_RADIOTAP;
1051 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */
1052 break;
1053 default:
1054 return -EOPNOTSUPP;
1055 }
1056
1057 /* MAC address - pre-requisite for other commands */
1058 wmi_set_mac_address(wil, ndev->dev_addr);
1059
1060 wil_dbg_misc(wil, "NAPI enable\n");
1061 napi_enable(&wil->napi_rx);
1062 napi_enable(&wil->napi_tx);
1063 set_bit(wil_status_napi_en, wil->status);
1064
1065 if (wil->platform_ops.bus_request)
1066 wil->platform_ops.bus_request(wil->platform_handle,
1067 WIL_MAX_BUS_REQUEST_KBPS);
1068
1069 return 0;
1070}
1071
1072int wil_up(struct wil6210_priv *wil)
1073{
1074 int rc;
1075
1076 wil_dbg_misc(wil, "%s()\n", __func__);
1077
1078 mutex_lock(&wil->mutex);
1079 rc = __wil_up(wil);
1080 mutex_unlock(&wil->mutex);
1081
1082 return rc;
1083}
1084
1085int __wil_down(struct wil6210_priv *wil)
1086{
1087 WARN_ON(!mutex_is_locked(&wil->mutex));
1088
1089 set_bit(wil_status_resetting, wil->status);
1090
1091 if (wil->platform_ops.bus_request)
1092 wil->platform_ops.bus_request(wil->platform_handle, 0);
1093
1094 wil_disable_irq(wil);
1095 if (test_and_clear_bit(wil_status_napi_en, wil->status)) {
1096 napi_disable(&wil->napi_rx);
1097 napi_disable(&wil->napi_tx);
1098 wil_dbg_misc(wil, "NAPI disable\n");
1099 }
1100 wil_enable_irq(wil);
1101
1102 mutex_lock(&wil->p2p_wdev_mutex);
1103 wil_p2p_stop_radio_operations(wil);
1104 wil_abort_scan(wil, false);
1105 mutex_unlock(&wil->p2p_wdev_mutex);
1106
1107 wil_reset(wil, false);
1108
1109 return 0;
1110}
1111
1112int wil_down(struct wil6210_priv *wil)
1113{
1114 int rc;
1115
1116 wil_dbg_misc(wil, "%s()\n", __func__);
1117
1118 wil_set_recovery_state(wil, fw_recovery_idle);
1119 mutex_lock(&wil->mutex);
1120 rc = __wil_down(wil);
1121 mutex_unlock(&wil->mutex);
1122
1123 return rc;
1124}
1125
1126int wil_find_cid(struct wil6210_priv *wil, const u8 *mac)
1127{
1128 int i;
1129 int rc = -ENOENT;
1130
1131 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1132 if ((wil->sta[i].status != wil_sta_unused) &&
1133 ether_addr_equal(wil->sta[i].addr, mac)) {
1134 rc = i;
1135 break;
1136 }
1137 }
1138
1139 return rc;
1140}
1141
1142void wil_halp_vote(struct wil6210_priv *wil)
1143{
1144 unsigned long rc;
1145 unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS);
1146
1147 mutex_lock(&wil->halp.lock);
1148
1149 wil_dbg_irq(wil, "%s: start, HALP ref_cnt (%d)\n", __func__,
1150 wil->halp.ref_cnt);
1151
1152 if (++wil->halp.ref_cnt == 1) {
1153 wil6210_set_halp(wil);
1154 rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies);
1155 if (!rc) {
1156 wil_err(wil, "%s: HALP vote timed out\n", __func__);
1157 /* Mask HALP as done in case the interrupt is raised */
1158 wil6210_mask_halp(wil);
1159 } else {
1160 wil_dbg_irq(wil,
1161 "%s: HALP vote completed after %d ms\n",
1162 __func__,
1163 jiffies_to_msecs(to_jiffies - rc));
1164 }
1165 }
1166
1167 wil_dbg_irq(wil, "%s: end, HALP ref_cnt (%d)\n", __func__,
1168 wil->halp.ref_cnt);
1169
1170 mutex_unlock(&wil->halp.lock);
1171}
1172
1173void wil_halp_unvote(struct wil6210_priv *wil)
1174{
1175 WARN_ON(wil->halp.ref_cnt == 0);
1176
1177 mutex_lock(&wil->halp.lock);
1178
1179 wil_dbg_irq(wil, "%s: start, HALP ref_cnt (%d)\n", __func__,
1180 wil->halp.ref_cnt);
1181
1182 if (--wil->halp.ref_cnt == 0) {
1183 wil6210_clear_halp(wil);
1184 wil_dbg_irq(wil, "%s: HALP unvote\n", __func__);
1185 }
1186
1187 wil_dbg_irq(wil, "%s: end, HALP ref_cnt (%d)\n", __func__,
1188 wil->halp.ref_cnt);
1189
1190 mutex_unlock(&wil->halp.lock);
1191}