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wil6210: wait for disconnect completion
[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / main.c
CommitLineData
2be7d22f 1/*
0916d9f2 2 * Copyright (c) 2012-2016 Qualcomm Atheros, Inc.
2be7d22f
VK		 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
2be7d22f
VK		 17#include <linux/moduleparam.h>
18#include <linux/if_arp.h>
108d1eb6 19#include <linux/etherdevice.h>
2be7d22f
VK		 20
21#include "wil6210.h"
b4490f42 22#include "txrx.h"
f172b563 23#include "wmi.h"
f1ad8c93 24#include "boot_loader.h"
f172b563 25
bfc2dc7a
VK		 26bool debug_fw; /* = false; */
27module_param(debug_fw, bool, S_IRUGO);
28MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug");
29
c33407a8 30bool no_fw_recovery;
ed6f9dc6 31module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR);
c33407a8 32MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery");
ed6f9dc6 33
ab954628
VK		 34/* if not set via modparam, will be set to default value of 1/8 of
35 * rx ring size during init flow
36 */
37unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT;
38module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO);
39MODULE_PARM_DESC(rx_ring_overflow_thrsh,
40 " RX ring overflow threshold in descriptors.");
b6b1b0ec 41
9a06bec9
VK		 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 */
c44690a1 45unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD;
9a06bec9
VK		 46static 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
4590d812 57 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU)
9a06bec9
VK		 58 ret = -EINVAL;
59
60 return ret;
61}
62
9c27847d 63static const struct kernel_param_ops mtu_max_ops = {
9a06bec9
VK		 64 .set = mtu_max_set,
65 .get = param_get_uint,
66};
67
68module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO);
69MODULE_PARM_DESC(mtu_max, " Max MTU value.");
70
d3762b40
VK		 71static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT;
72static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT;
41d6b093 73static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT;
d3762b40
VK		 74
75static 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
9c27847d 92static const struct kernel_param_ops ring_order_ops = {
d3762b40
VK		 93 .set = ring_order_set,
94 .get = param_get_uint,
95};
96
97module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO);
98MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order");
99module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO);
100MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order");
d507d1b7
VK		 101module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO);
102MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order");
d3762b40 103
520d68e7
VK		 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
2be7d22f
VK		 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 */
119void 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
130void 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
b516fcc5 140static void wil_disconnect_cid(struct wil6210_priv *wil, int cid,
4821e6d8 141 u16 reason_code, bool from_event)
bd33273b 142__acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
91886b0b
VK		 143{
144 uint i;
fc58f681
VK		 145 struct net_device *ndev = wil_to_ndev(wil);
146 struct wireless_dev *wdev = wil->wdev;
91886b0b 147 struct wil_sta_info *sta = &wil->sta[cid];
8fe59627 148
bd33273b 149 might_sleep();
fc58f681
VK		 150 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid,
151 sta->status);
4d55a0a1
VK		 152
153 if (sta->status != wil_sta_unused) {
b516fcc5 154 if (!from_event)
0916d9f2 155 wmi_disconnect_sta(wil, sta->addr, reason_code, true);
b516fcc5 156
fc58f681
VK		 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 }
4d55a0a1
VK		 166 sta->status = wil_sta_unused;
167 }
168
91886b0b 169 for (i = 0; i < WIL_STA_TID_NUM; i++) {
ec81b5ad 170 struct wil_tid_ampdu_rx *r;
ec81b5ad 171
bd33273b 172 spin_lock_bh(&sta->tid_rx_lock);
ec81b5ad
DL		 173
174 r = sta->tid_rx[i];
91886b0b
VK		 175 sta->tid_rx[i] = NULL;
176 wil_tid_ampdu_rx_free(wil, r);
ec81b5ad 177
bd33273b 178 spin_unlock_bh(&sta->tid_rx_lock);
91886b0b
VK		 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
b516fcc5 187static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid,
4821e6d8 188 u16 reason_code, bool from_event)
2be7d22f 189{
91886b0b 190 int cid = -ENOENT;
2be7d22f 191 struct net_device *ndev = wil_to_ndev(wil);
91886b0b
VK		 192 struct wireless_dev *wdev = wil->wdev;
193
194 might_sleep();
0916d9f2
ME		 195 wil_info(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid,
196 reason_code, from_event ? "+" : "-");
100106d7
VK		 197
198 /* Cases are:
199 * - disconnect single STA, still connected
200 * - disconnect single STA, already disconnected
201 * - disconnect all
202 *
68682b41 203 * For "disconnect all", there are 3 options:
100106d7 204 * - bssid == NULL
68682b41 205 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff)
100106d7
VK		 206 * - bssid is our MAC address
207 */
68682b41
VK		 208 if (bssid && !is_broadcast_ether_addr(bssid) &&
209 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) {
91886b0b 210 cid = wil_find_cid(wil, bssid);
100106d7
VK		 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");
91886b0b 217 for (cid = 0; cid < WIL6210_MAX_CID; cid++)
4821e6d8 218 wil_disconnect_cid(wil, cid, reason_code, from_event);
100106d7 219 }
91886b0b
VK		 220
221 /* link state */
222 switch (wdev->iftype) {
223 case NL80211_IFTYPE_STATION:
224 case NL80211_IFTYPE_P2P_CLIENT:
41d6b093 225 wil_bcast_fini(wil);
c5e96c91
DL		 226 netif_tx_stop_all_queues(ndev);
227 netif_carrier_off(ndev);
228
9419b6a2
VK		 229 if (test_bit(wil_status_fwconnected, wil->status)) {
230 clear_bit(wil_status_fwconnected, wil->status);
4821e6d8 231 cfg80211_disconnected(ndev, reason_code,
80279fb7 232 NULL, 0, false, GFP_KERNEL);
9419b6a2 233 } else if (test_bit(wil_status_fwconnecting, wil->status)) {
91886b0b
VK		 234 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
235 WLAN_STATUS_UNSPECIFIED_FAILURE,
236 GFP_KERNEL);
237 }
9419b6a2 238 clear_bit(wil_status_fwconnecting, wil->status);
91886b0b
VK		 239 break;
240 default:
91886b0b 241 break;
2be7d22f 242 }
2be7d22f
VK		 243}
244
245static void wil_disconnect_worker(struct work_struct *work)
246{
247 struct wil6210_priv *wil = container_of(work,
248 struct wil6210_priv, disconnect_worker);
249
097638a0 250 mutex_lock(&wil->mutex);
4821e6d8 251 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false);
097638a0 252 mutex_unlock(&wil->mutex);
2be7d22f
VK		 253}
254
255static void wil_connect_timer_fn(ulong x)
256{
257 struct wil6210_priv *wil = (void *)x;
0916d9f2 258 bool q;
2be7d22f 259
0916d9f2 260 wil_err(wil, "Connect timeout detected, disconnect station\n");
2be7d22f
VK		 261
262 /* reschedule to thread context - disconnect won't
0916d9f2
ME		 263 * run from atomic context.
264 * queue on wmi_wq to prevent race with connect event.
2be7d22f 265 */
0916d9f2
ME		 266 q = queue_work(wil->wmi_wq, &wil->disconnect_worker);
267 wil_dbg_wmi(wil, "queue_work of disconnect_worker -> %d\n", q);
2be7d22f
VK		 268}
269
047e5d74
VK		 270static void wil_scan_timer_fn(ulong x)
271{
272 struct wil6210_priv *wil = (void *)x;
273
9419b6a2 274 clear_bit(wil_status_fwready, wil->status);
047e5d74 275 wil_err(wil, "Scan timeout detected, start fw error recovery\n");
8ad6600f 276 wil_fw_error_recovery(wil);
047e5d74
VK		 277}
278
c33407a8
VK		 279static 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
294void 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
ed6f9dc6
VK		 303static void wil_fw_error_worker(struct work_struct *work)
304{
c33407a8
VK		 305 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
306 fw_error_worker);
ed6f9dc6
VK		 307 struct wireless_dev *wdev = wil->wdev;
308
309 wil_dbg_misc(wil, "fw error worker\n");
310
cded9369
VK		 311 if (!netif_running(wil_to_ndev(wil))) {
312 wil_info(wil, "No recovery - interface is down\n");
313 return;
314 }
315
fc219eed
VK		 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
9c3bde56 333 mutex_lock(&wil->mutex);
ed6f9dc6
VK		 334 switch (wdev->iftype) {
335 case NL80211_IFTYPE_STATION:
336 case NL80211_IFTYPE_P2P_CLIENT:
337 case NL80211_IFTYPE_MONITOR:
c33407a8 338 wil_info(wil, "fw error recovery requested (try %d)...\n",
fc219eed 339 wil->recovery_count);
c33407a8
VK		 340 if (!no_fw_recovery)
341 wil->recovery_state = fw_recovery_running;
342 if (0 != wil_wait_for_recovery(wil))
343 break;
344
73d839ae
VK		 345 __wil_down(wil);
346 __wil_up(wil);
ed6f9dc6
VK		 347 break;
348 case NL80211_IFTYPE_AP:
349 case NL80211_IFTYPE_P2P_GO:
e240537b 350 wil_info(wil, "No recovery for AP-like interface\n");
ed6f9dc6
VK		 351 /* recovery in these modes is done by upper layers */
352 break;
353 default:
e240537b
VK		 354 wil_err(wil, "No recovery - unknown interface type %d\n",
355 wdev->iftype);
ed6f9dc6
VK		 356 break;
357 }
9c3bde56 358 mutex_unlock(&wil->mutex);
ed6f9dc6
VK		 359}
360
9a177384
VK		 361static int wil_find_free_vring(struct wil6210_priv *wil)
362{
363 int i;
8fe59627 364
9a177384
VK		 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
0916d9f2
ME		 372int 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
394out:
395 return rc;
396}
397
41d6b093
VK		 398int 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
230d8442 409 wil->bcast_vring = ri;
41d6b093 410 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order);
230d8442
VK		 411 if (rc)
412 wil->bcast_vring = -1;
41d6b093
VK		 413
414 return rc;
415}
416
417void 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
2be7d22f
VK		 428int wil_priv_init(struct wil6210_priv *wil)
429{
ec81b5ad
DL		 430 uint i;
431
7743882d 432 wil_dbg_misc(wil, "%s()\n", __func__);
2be7d22f 433
3df2cd36 434 memset(wil->sta, 0, sizeof(wil->sta));
ec81b5ad
DL		 435 for (i = 0; i < WIL6210_MAX_CID; i++)
436 spin_lock_init(&wil->sta[i].tid_rx_lock);
3df2cd36 437
875e9439
ME		 438 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++)
439 spin_lock_init(&wil->vring_tx_data[i].lock);
440
2be7d22f
VK		 441 mutex_init(&wil->mutex);
442 mutex_init(&wil->wmi_mutex);
3277213f 443 mutex_init(&wil->back_rx_mutex);
3a124ed6 444 mutex_init(&wil->back_tx_mutex);
40822a90 445 mutex_init(&wil->probe_client_mutex);
2be7d22f
VK		 446
447 init_completion(&wil->wmi_ready);
59502647 448 init_completion(&wil->wmi_call);
2be7d22f 449
41d6b093 450 wil->bcast_vring = -1;
2be7d22f 451 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
047e5d74 452 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil);
2be7d22f 453
2be7d22f
VK		 454 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker);
455 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker);
ed6f9dc6 456 INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker);
3277213f 457 INIT_WORK(&wil->back_rx_worker, wil_back_rx_worker);
3a124ed6 458 INIT_WORK(&wil->back_tx_worker, wil_back_tx_worker);
40822a90 459 INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker);
2be7d22f
VK		 460
461 INIT_LIST_HEAD(&wil->pending_wmi_ev);
3277213f 462 INIT_LIST_HEAD(&wil->back_rx_pending);
3a124ed6 463 INIT_LIST_HEAD(&wil->back_tx_pending);
40822a90 464 INIT_LIST_HEAD(&wil->probe_client_pending);
2be7d22f 465 spin_lock_init(&wil->wmi_ev_lock);
c33407a8 466 init_waitqueue_head(&wil->wq);
2be7d22f 467
3277213f 468 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi");
2be7d22f
VK		 469 if (!wil->wmi_wq)
470 return -EAGAIN;
471
3277213f
VK		 472 wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service");
473 if (!wil->wq_service)
474 goto out_wmi_wq;
2be7d22f 475
fc219eed 476 wil->last_fw_recovery = jiffies;
1f80af2e
VS		 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;
fc219eed 481
ab954628
VK		 482 if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT)
483 rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT;
2be7d22f 484 return 0;
3277213f
VK		 485
486out_wmi_wq:
487 destroy_workqueue(wil->wmi_wq);
488
489 return -EAGAIN;
2be7d22f
VK		 490}
491
b516fcc5
VK		 492/**
493 * wil6210_disconnect - disconnect one connection
494 * @wil: driver context
495 * @bssid: peer to disconnect, NULL to disconnect all
4821e6d8 496 * @reason_code: Reason code for the Disassociation frame
b516fcc5
VK		 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 */
502void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid,
4821e6d8 503 u16 reason_code, bool from_event)
2be7d22f 504{
9cf10d62
VK		 505 wil_dbg_misc(wil, "%s()\n", __func__);
506
2be7d22f 507 del_timer_sync(&wil->connect_timer);
4821e6d8 508 _wil6210_disconnect(wil, bssid, reason_code, from_event);
2be7d22f
VK		 509}
510
511void wil_priv_deinit(struct wil6210_priv *wil)
512{
9cf10d62
VK		 513 wil_dbg_misc(wil, "%s()\n", __func__);
514
c33407a8 515 wil_set_recovery_state(wil, fw_recovery_idle);
047e5d74 516 del_timer_sync(&wil->scan_timer);
2be7d22f 517 cancel_work_sync(&wil->disconnect_worker);
ed6f9dc6 518 cancel_work_sync(&wil->fw_error_worker);
097638a0 519 mutex_lock(&wil->mutex);
4821e6d8 520 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false);
097638a0 521 mutex_unlock(&wil->mutex);
2be7d22f 522 wmi_event_flush(wil);
3277213f
VK		 523 wil_back_rx_flush(wil);
524 cancel_work_sync(&wil->back_rx_worker);
3a124ed6
VK		 525 wil_back_tx_flush(wil);
526 cancel_work_sync(&wil->back_tx_worker);
40822a90
VK		 527 wil_probe_client_flush(wil);
528 cancel_work_sync(&wil->probe_client_worker);
3277213f 529 destroy_workqueue(wil->wq_service);
2be7d22f
VK		 530 destroy_workqueue(wil->wmi_wq);
531}
532
151a9706
VK		 533static inline void wil_halt_cpu(struct wil6210_priv *wil)
534{
b9eeb512
VK		 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);
151a9706
VK		 537}
538
539static inline void wil_release_cpu(struct wil6210_priv *wil)
540{
541 /* Start CPU */
b9eeb512 542 wil_w(wil, RGF_USER_USER_CPU_0, 1);
151a9706
VK		 543}
544
bbb2adc7 545static int wil_target_reset(struct wil6210_priv *wil)
2be7d22f 546{
98a65b59 547 int delay = 0;
bb6c8dcc 548 u32 x, x1 = 0;
36b10a72 549
1aeda13b 550 wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name);
6508281b
VK		 551
552 /* Clear MAC link up */
b9eeb512
VK		 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);
151a9706
VK		 556
557 wil_halt_cpu(wil);
2be7d22f 558
2cd0f021 559 /* clear all boot loader "ready" bits */
b9eeb512
VK		 560 wil_w(wil, RGF_USER_BL +
561 offsetof(struct bl_dedicated_registers_v0, boot_loader_ready), 0);
cce47711 562 /* Clear Fw Download notification */
b9eeb512 563 wil_c(wil, RGF_USER_USAGE_6, BIT(0));
cce47711 564
b9eeb512 565 wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN);
9a5511b5
VK		 566 /* XTAL stabilization should take about 3ms */
567 usleep_range(5000, 7000);
b9eeb512 568 x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS);
9a5511b5
VK		 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;
6508281b 573 }
9a5511b5 574 /* switch 10k to XTAL*/
b9eeb512 575 wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF);
9a5511b5 576 /* 40 MHz */
b9eeb512 577 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL);
9a5511b5 578
b9eeb512
VK		 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);
6508281b 581
b9eeb512
VK		 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);
2be7d22f 586
b9eeb512
VK		 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);
6508281b 589
b9eeb512
VK		 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);
2be7d22f 594
b9eeb512
VK		 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);
6508281b 598
b9eeb512 599 wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
2be7d22f 600
2cd0f021 601 /* wait until device ready. typical time is 20..80 msec */
36b10a72 602 do {
520d68e7 603 msleep(RST_DELAY);
b9eeb512
VK		 604 x = wil_r(wil, RGF_USER_BL +
605 offsetof(struct bl_dedicated_registers_v0,
606 boot_loader_ready));
bb6c8dcc
VK		 607 if (x1 != x) {
608 wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n", x1, x);
609 x1 = x;
610 }
520d68e7 611 if (delay++ > RST_COUNT) {
2cd0f021 612 wil_err(wil, "Reset not completed, bl.ready 0x%08x\n",
48516298 613 x);
bbb2adc7 614 return -ETIME;
36b10a72 615 }
f1ad8c93 616 } while (x != BL_READY);
36b10a72 617
b9eeb512 618 wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD);
972072aa 619
e3351277 620 /* enable fix for HW bug related to the SA/DA swap in AP Rx */
b9eeb512
VK		 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);
e3351277 623
520d68e7 624 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY);
bbb2adc7 625 return 0;
151a9706 626}
2be7d22f 627
2be7d22f
VK		 628void 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
2cd0f021
VK		 637static int wil_get_bl_info(struct wil6210_priv *wil)
638{
639 struct net_device *ndev = wil_to_ndev(wil);
f1ad8c93
VK		 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
19c871ce
VK		 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) {
f1ad8c93
VK		 654 le32_to_cpus(&bl.bl0.rf_type);
655 le32_to_cpus(&bl.bl0.baseband_type);
f1ad8c93
VK		 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");
19c871ce 662 } else {
f1ad8c93
VK		 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);
f1ad8c93
VK		 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);
f1ad8c93 676 }
2cd0f021 677
f1ad8c93
VK		 678 if (!is_valid_ether_addr(mac)) {
679 wil_err(wil, "BL: Invalid MAC %pM\n", mac);
2cd0f021
VK		 680 return -EINVAL;
681 }
682
f1ad8c93 683 ether_addr_copy(ndev->perm_addr, mac);
2cd0f021 684 if (!is_valid_ether_addr(ndev->dev_addr))
f1ad8c93
VK		 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 }
2cd0f021
VK		 692
693 return 0;
694}
695
409ead54
VK		 696static 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
2be7d22f
VK		 727static 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);
8fe59627 731
2be7d22f
VK		 732 if (0 == left) {
733 wil_err(wil, "Firmware not ready\n");
734 return -ETIME;
735 } else {
15e23124
VK		 736 wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n",
737 jiffies_to_msecs(to-left), wil->hw_version);
2be7d22f
VK		 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 */
2cd0f021 747int wil_reset(struct wil6210_priv *wil, bool load_fw)
2be7d22f
VK		 748{
749 int rc;
750
9cf10d62
VK		 751 wil_dbg_misc(wil, "%s()\n", __func__);
752
097638a0 753 WARN_ON(!mutex_is_locked(&wil->mutex));
9419b6a2 754 WARN_ON(test_bit(wil_status_napi_en, wil->status));
097638a0 755
bfc2dc7a
VK		 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
67131a1d
VK		 767 if (wil->hw_version == HW_VER_UNKNOWN)
768 return -ENODEV;
769
f13e0630
HK		 770 set_bit(wil_status_resetting, wil->status);
771
097638a0 772 cancel_work_sync(&wil->disconnect_worker);
4821e6d8 773 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false);
41d6b093 774 wil_bcast_fini(wil);
097638a0 775
452133a7
ME		 776 /* prevent NAPI from being scheduled and prevent wmi commands */
777 mutex_lock(&wil->wmi_mutex);
9419b6a2 778 bitmap_zero(wil->status, wil_status_last);
452133a7 779 mutex_unlock(&wil->wmi_mutex);
0fef1818 780
ed6f9dc6
VK		 781 if (wil->scan_request) {
782 wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
783 wil->scan_request);
047e5d74 784 del_timer_sync(&wil->scan_timer);
ed6f9dc6
VK		 785 cfg80211_scan_done(wil->scan_request, true);
786 wil->scan_request = NULL;
787 }
788
e4dbb093 789 wil_mask_irq(wil);
e08b5906 790
2be7d22f
VK		 791 wmi_event_flush(wil);
792
3277213f 793 flush_workqueue(wil->wq_service);
e08b5906 794 flush_workqueue(wil->wmi_wq);
2be7d22f 795
409ead54 796 wil_bl_crash_info(wil, false);
bbb2adc7 797 rc = wil_target_reset(wil);
8bf6adb9 798 wil_rx_fini(wil);
409ead54
VK		 799 if (rc) {
800 wil_bl_crash_info(wil, true);
bbb2adc7 801 return rc;
409ead54 802 }
bbb2adc7 803
2cd0f021 804 rc = wil_get_bl_info(wil);
f1ad8c93
VK		 805 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */
806 rc = 0;
2cd0f021
VK		 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
151a9706
VK		 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;
2cd0f021
VK		 819 rc = wil_request_firmware(wil, WIL_FW2_NAME);
820 if (rc)
821 return rc;
822
823 /* Mark FW as loaded from host */
b9eeb512 824 wil_s(wil, RGF_USER_USAGE_6, 1);
151a9706 825
2cd0f021
VK		 826 /* clear any interrupts which on-card-firmware
827 * may have set
828 */
151a9706 829 wil6210_clear_irq(wil);
2cd0f021
VK		 830 /* CAF_ICR - clear and mask */
831 /* it is W1C, clear by writing back same value */
b9eeb512
VK		 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);
2cd0f021 834
151a9706 835 wil_release_cpu(wil);
151a9706 836 }
8bf6adb9 837
2be7d22f 838 /* init after reset */
02beaf1a 839 wil->ap_isolate = 0;
16735d02 840 reinit_completion(&wil->wmi_ready);
59502647 841 reinit_completion(&wil->wmi_call);
2be7d22f 842
2cd0f021
VK		 843 if (load_fw) {
844 wil_configure_interrupt_moderation(wil);
845 wil_unmask_irq(wil);
2be7d22f 846
2cd0f021
VK		 847 /* we just started MAC, wait for FW ready */
848 rc = wil_wait_for_fw_ready(wil);
cec94d8c
VK		 849 if (rc == 0) /* check FW is responsive */
850 rc = wmi_echo(wil);
2cd0f021 851 }
2be7d22f
VK		 852
853 return rc;
854}
855
ed6f9dc6
VK		 856void wil_fw_error_recovery(struct wil6210_priv *wil)
857{
858 wil_dbg_misc(wil, "starting fw error recovery\n");
f13e0630
HK		 859
860 if (test_bit(wil_status_resetting, wil->status)) {
861 wil_info(wil, "Reset already in progress\n");
862 return;
863 }
864
c33407a8 865 wil->recovery_state = fw_recovery_pending;
ed6f9dc6
VK		 866 schedule_work(&wil->fw_error_worker);
867}
2be7d22f 868
73d839ae 869int __wil_up(struct wil6210_priv *wil)
2be7d22f
VK		 870{
871 struct net_device *ndev = wil_to_ndev(wil);
872 struct wireless_dev *wdev = wil->wdev;
2be7d22f 873 int rc;
2be7d22f 874
097638a0
VK		 875 WARN_ON(!mutex_is_locked(&wil->mutex));
876
2cd0f021 877 rc = wil_reset(wil, true);
2be7d22f
VK		 878 if (rc)
879 return rc;
880
e31b2562 881 /* Rx VRING. After MAC and beacon */
d3762b40 882 rc = wil_rx_init(wil, 1 << rx_ring_order);
e31b2562
VK		 883 if (rc)
884 return rc;
885
2be7d22f
VK		 886 switch (wdev->iftype) {
887 case NL80211_IFTYPE_STATION:
7743882d 888 wil_dbg_misc(wil, "type: STATION\n");
2be7d22f
VK		 889 ndev->type = ARPHRD_ETHER;
890 break;
891 case NL80211_IFTYPE_AP:
7743882d 892 wil_dbg_misc(wil, "type: AP\n");
2be7d22f
VK		 893 ndev->type = ARPHRD_ETHER;
894 break;
895 case NL80211_IFTYPE_P2P_CLIENT:
7743882d 896 wil_dbg_misc(wil, "type: P2P_CLIENT\n");
2be7d22f
VK		 897 ndev->type = ARPHRD_ETHER;
898 break;
899 case NL80211_IFTYPE_P2P_GO:
7743882d 900 wil_dbg_misc(wil, "type: P2P_GO\n");
2be7d22f
VK		 901 ndev->type = ARPHRD_ETHER;
902 break;
903 case NL80211_IFTYPE_MONITOR:
7743882d 904 wil_dbg_misc(wil, "type: Monitor\n");
2be7d22f
VK		 905 ndev->type = ARPHRD_IEEE80211_RADIOTAP;
906 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */
907 break;
908 default:
909 return -EOPNOTSUPP;
910 }
911
2be7d22f
VK		 912 /* MAC address - pre-requisite for other commands */
913 wmi_set_mac_address(wil, ndev->dev_addr);
914
73d839ae 915 wil_dbg_misc(wil, "NAPI enable\n");
e0287c4a
VK		 916 napi_enable(&wil->napi_rx);
917 napi_enable(&wil->napi_tx);
9419b6a2 918 set_bit(wil_status_napi_en, wil->status);
e0287c4a 919
f772ebfb
VK		 920 if (wil->platform_ops.bus_request)
921 wil->platform_ops.bus_request(wil->platform_handle,
922 WIL_MAX_BUS_REQUEST_KBPS);
923
2be7d22f
VK		 924 return 0;
925}
926
927int wil_up(struct wil6210_priv *wil)
928{
929 int rc;
930
9cf10d62
VK		 931 wil_dbg_misc(wil, "%s()\n", __func__);
932
2be7d22f
VK		 933 mutex_lock(&wil->mutex);
934 rc = __wil_up(wil);
935 mutex_unlock(&wil->mutex);
936
937 return rc;
938}
939
73d839ae 940int __wil_down(struct wil6210_priv *wil)
2be7d22f 941{
78771d76 942 int rc;
f172b563 943
097638a0
VK		 944 WARN_ON(!mutex_is_locked(&wil->mutex));
945
f772ebfb
VK		 946 if (wil->platform_ops.bus_request)
947 wil->platform_ops.bus_request(wil->platform_handle, 0);
948
73d839ae 949 wil_disable_irq(wil);
9419b6a2 950 if (test_and_clear_bit(wil_status_napi_en, wil->status)) {
73d839ae
VK		 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);
e0287c4a 956
2be7d22f 957 if (wil->scan_request) {
2a91d7d0
VK		 958 wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
959 wil->scan_request);
047e5d74 960 del_timer_sync(&wil->scan_timer);
2be7d22f
VK		 961 cfg80211_scan_done(wil->scan_request, true);
962 wil->scan_request = NULL;
963 }
964
9419b6a2 965 if (test_bit(wil_status_fwconnected, wil->status) ||
78771d76 966 test_bit(wil_status_fwconnecting, wil->status)) {
f172b563 967
78771d76
VK		 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");
f172b563 975 }
f172b563 976
2cd0f021 977 wil_reset(wil, false);
2be7d22f
VK		 978
979 return 0;
980}
981
982int wil_down(struct wil6210_priv *wil)
983{
984 int rc;
985
9cf10d62
VK		 986 wil_dbg_misc(wil, "%s()\n", __func__);
987
c33407a8 988 wil_set_recovery_state(wil, fw_recovery_idle);
2be7d22f
VK		 989 mutex_lock(&wil->mutex);
990 rc = __wil_down(wil);
991 mutex_unlock(&wil->mutex);
992
993 return rc;
994}
3df2cd36
VK		 995
996int 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) &&
108d1eb6 1003 ether_addr_equal(wil->sta[i].addr, mac)) {
3df2cd36
VK		 1004 rc = i;
1005 break;
1006 }
1007 }
1008
1009 return rc;
1010}
Linux kernel - Deliverables
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