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wil6210: dump firmware memory when firmware crashes
[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / main.c
CommitLineData
2be7d22f 1/*
1f80af2e 2 * Copyright (c) 2012-2015 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
DL		 25
26#define WAIT_FOR_DISCONNECT_TIMEOUT_MS 2000
27#define WAIT_FOR_DISCONNECT_INTERVAL_MS 10
2be7d22f 28
bfc2dc7a
VK		 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
c33407a8 33bool no_fw_recovery;
ed6f9dc6 34module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR);
c33407a8 35MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery");
ed6f9dc6 36
ab954628
VK		 37/* if not set via modparam, will be set to default value of 1/8 of
38 * rx ring size during init flow
39 */
40unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT;
41module_param(rx_ring_overflow_thrsh, ushort, S_IRUGO);
42MODULE_PARM_DESC(rx_ring_overflow_thrsh,
43 " RX ring overflow threshold in descriptors.");
b6b1b0ec 44
9a06bec9
VK		 45/* We allow allocation of more than 1 page buffers to support large packets.
46 * It is suboptimal behavior performance wise in case MTU above page size.
47 */
c44690a1 48unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD;
9a06bec9
VK		 49static int mtu_max_set(const char *val, const struct kernel_param *kp)
50{
51 int ret;
52
53 /* sets mtu_max directly. no need to restore it in case of
54 * illegal value since we assume this will fail insmod
55 */
56 ret = param_set_uint(val, kp);
57 if (ret)
58 return ret;
59
4590d812 60 if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU)
9a06bec9
VK		 61 ret = -EINVAL;
62
63 return ret;
64}
65
9c27847d 66static const struct kernel_param_ops mtu_max_ops = {
9a06bec9
VK		 67 .set = mtu_max_set,
68 .get = param_get_uint,
69};
70
71module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, S_IRUGO);
72MODULE_PARM_DESC(mtu_max, " Max MTU value.");
73
d3762b40
VK		 74static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT;
75static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT;
41d6b093 76static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT;
d3762b40
VK		 77
78static int ring_order_set(const char *val, const struct kernel_param *kp)
79{
80 int ret;
81 uint x;
82
83 ret = kstrtouint(val, 0, &x);
84 if (ret)
85 return ret;
86
87 if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX))
88 return -EINVAL;
89
90 *((uint *)kp->arg) = x;
91
92 return 0;
93}
94
9c27847d 95static const struct kernel_param_ops ring_order_ops = {
d3762b40
VK		 96 .set = ring_order_set,
97 .get = param_get_uint,
98};
99
100module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, S_IRUGO);
101MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order");
102module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO);
103MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order");
d507d1b7
VK		 104module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO);
105MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order");
d3762b40 106
520d68e7
VK		 107#define RST_DELAY (20) /* msec, for loop in @wil_target_reset */
108#define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */
109
2be7d22f
VK		 110/*
111 * Due to a hardware issue,
112 * one has to read/write to/from NIC in 32-bit chunks;
113 * regular memcpy_fromio and siblings will
114 * not work on 64-bit platform - it uses 64-bit transactions
115 *
116 * Force 32-bit transactions to enable NIC on 64-bit platforms
117 *
118 * To avoid byte swap on big endian host, __raw_{read|write}l
119 * should be used - {read|write}l would swap bytes to provide
120 * little endian on PCI value in host endianness.
121 */
122void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
123 size_t count)
124{
125 u32 *d = dst;
126 const volatile u32 __iomem *s = src;
127
128 /* size_t is unsigned, if (count%4 != 0) it will wrap */
129 for (count += 4; count > 4; count -= 4)
130 *d++ = __raw_readl(s++);
131}
132
133void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
134 size_t count)
135{
136 volatile u32 __iomem *d = dst;
137 const u32 *s = src;
138
139 for (count += 4; count > 4; count -= 4)
140 __raw_writel(*s++, d++);
141}
142
b516fcc5 143static void wil_disconnect_cid(struct wil6210_priv *wil, int cid,
4821e6d8 144 u16 reason_code, bool from_event)
bd33273b 145__acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
91886b0b
VK		 146{
147 uint i;
fc58f681
VK		 148 struct net_device *ndev = wil_to_ndev(wil);
149 struct wireless_dev *wdev = wil->wdev;
91886b0b 150 struct wil_sta_info *sta = &wil->sta[cid];
8fe59627 151
bd33273b 152 might_sleep();
fc58f681
VK		 153 wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid,
154 sta->status);
4d55a0a1
VK		 155
156 if (sta->status != wil_sta_unused) {
b516fcc5 157 if (!from_event)
4821e6d8 158 wmi_disconnect_sta(wil, sta->addr, reason_code);
b516fcc5 159
fc58f681
VK		 160 switch (wdev->iftype) {
161 case NL80211_IFTYPE_AP:
162 case NL80211_IFTYPE_P2P_GO:
163 /* AP-like interface */
164 cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL);
165 break;
166 default:
167 break;
168 }
4d55a0a1
VK		 169 sta->status = wil_sta_unused;
170 }
171
91886b0b 172 for (i = 0; i < WIL_STA_TID_NUM; i++) {
ec81b5ad 173 struct wil_tid_ampdu_rx *r;
ec81b5ad 174
bd33273b 175 spin_lock_bh(&sta->tid_rx_lock);
ec81b5ad
DL		 176
177 r = sta->tid_rx[i];
91886b0b
VK		 178 sta->tid_rx[i] = NULL;
179 wil_tid_ampdu_rx_free(wil, r);
ec81b5ad 180
bd33273b 181 spin_unlock_bh(&sta->tid_rx_lock);
91886b0b
VK		 182 }
183 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
184 if (wil->vring2cid_tid[i][0] == cid)
185 wil_vring_fini_tx(wil, i);
186 }
187 memset(&sta->stats, 0, sizeof(sta->stats));
188}
189
b516fcc5 190static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid,
4821e6d8 191 u16 reason_code, bool from_event)
2be7d22f 192{
91886b0b 193 int cid = -ENOENT;
2be7d22f 194 struct net_device *ndev = wil_to_ndev(wil);
91886b0b
VK		 195 struct wireless_dev *wdev = wil->wdev;
196
197 might_sleep();
100106d7
VK		 198 wil_dbg_misc(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid,
199 reason_code, from_event ? "+" : "-");
200
201 /* Cases are:
202 * - disconnect single STA, still connected
203 * - disconnect single STA, already disconnected
204 * - disconnect all
205 *
68682b41 206 * For "disconnect all", there are 3 options:
100106d7 207 * - bssid == NULL
68682b41 208 * - bssid is broadcast address (ff:ff:ff:ff:ff:ff)
100106d7
VK		 209 * - bssid is our MAC address
210 */
68682b41
VK		 211 if (bssid && !is_broadcast_ether_addr(bssid) &&
212 !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) {
91886b0b 213 cid = wil_find_cid(wil, bssid);
100106d7
VK		 214 wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n",
215 bssid, cid, reason_code);
216 if (cid >= 0) /* disconnect 1 peer */
217 wil_disconnect_cid(wil, cid, reason_code, from_event);
218 } else { /* all */
219 wil_dbg_misc(wil, "Disconnect all\n");
91886b0b 220 for (cid = 0; cid < WIL6210_MAX_CID; cid++)
4821e6d8 221 wil_disconnect_cid(wil, cid, reason_code, from_event);
100106d7 222 }
91886b0b
VK		 223
224 /* link state */
225 switch (wdev->iftype) {
226 case NL80211_IFTYPE_STATION:
227 case NL80211_IFTYPE_P2P_CLIENT:
41d6b093 228 wil_bcast_fini(wil);
c5e96c91
DL		 229 netif_tx_stop_all_queues(ndev);
230 netif_carrier_off(ndev);
231
9419b6a2
VK		 232 if (test_bit(wil_status_fwconnected, wil->status)) {
233 clear_bit(wil_status_fwconnected, wil->status);
4821e6d8 234 cfg80211_disconnected(ndev, reason_code,
80279fb7 235 NULL, 0, false, GFP_KERNEL);
9419b6a2 236 } else if (test_bit(wil_status_fwconnecting, wil->status)) {
91886b0b
VK		 237 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
238 WLAN_STATUS_UNSPECIFIED_FAILURE,
239 GFP_KERNEL);
240 }
9419b6a2 241 clear_bit(wil_status_fwconnecting, wil->status);
91886b0b
VK		 242 break;
243 default:
91886b0b 244 break;
2be7d22f 245 }
2be7d22f
VK		 246}
247
248static void wil_disconnect_worker(struct work_struct *work)
249{
250 struct wil6210_priv *wil = container_of(work,
251 struct wil6210_priv, disconnect_worker);
252
097638a0 253 mutex_lock(&wil->mutex);
4821e6d8 254 _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false);
097638a0 255 mutex_unlock(&wil->mutex);
2be7d22f
VK		 256}
257
258static void wil_connect_timer_fn(ulong x)
259{
260 struct wil6210_priv *wil = (void *)x;
261
7743882d 262 wil_dbg_misc(wil, "Connect timeout\n");
2be7d22f
VK		 263
264 /* reschedule to thread context - disconnect won't
265 * run from atomic context
266 */
267 schedule_work(&wil->disconnect_worker);
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
41d6b093
VK		 372int wil_bcast_init(struct wil6210_priv *wil)
373{
374 int ri = wil->bcast_vring, rc;
375
376 if ((ri >= 0) && wil->vring_tx[ri].va)
377 return 0;
378
379 ri = wil_find_free_vring(wil);
380 if (ri < 0)
381 return ri;
382
230d8442 383 wil->bcast_vring = ri;
41d6b093 384 rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order);
230d8442
VK		 385 if (rc)
386 wil->bcast_vring = -1;
41d6b093
VK		 387
388 return rc;
389}
390
391void wil_bcast_fini(struct wil6210_priv *wil)
392{
393 int ri = wil->bcast_vring;
394
395 if (ri < 0)
396 return;
397
398 wil->bcast_vring = -1;
399 wil_vring_fini_tx(wil, ri);
400}
401
d81079f1
VK		 402static void wil_connect_worker(struct work_struct *work)
403{
404 int rc;
405 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
406 connect_worker);
c5e96c91
DL		 407 struct net_device *ndev = wil_to_ndev(wil);
408
d81079f1 409 int cid = wil->pending_connect_cid;
9a177384 410 int ringid = wil_find_free_vring(wil);
d81079f1
VK		 411
412 if (cid < 0) {
413 wil_err(wil, "No connection pending\n");
414 return;
415 }
416
417 wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid);
418
d3762b40 419 rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0);
d81079f1 420 wil->pending_connect_cid = -1;
3df2cd36
VK		 421 if (rc == 0) {
422 wil->sta[cid].status = wil_sta_connected;
c5e96c91 423 netif_tx_wake_all_queues(ndev);
3df2cd36
VK		 424 } else {
425 wil->sta[cid].status = wil_sta_unused;
426 }
d81079f1
VK		 427}
428
2be7d22f
VK		 429int wil_priv_init(struct wil6210_priv *wil)
430{
ec81b5ad
DL		 431 uint i;
432
7743882d 433 wil_dbg_misc(wil, "%s()\n", __func__);
2be7d22f 434
3df2cd36 435 memset(wil->sta, 0, sizeof(wil->sta));
ec81b5ad
DL		 436 for (i = 0; i < WIL6210_MAX_CID; i++)
437 spin_lock_init(&wil->sta[i].tid_rx_lock);
3df2cd36 438
2be7d22f
VK		 439 mutex_init(&wil->mutex);
440 mutex_init(&wil->wmi_mutex);
3277213f 441 mutex_init(&wil->back_rx_mutex);
3a124ed6 442 mutex_init(&wil->back_tx_mutex);
40822a90 443 mutex_init(&wil->probe_client_mutex);
2be7d22f
VK		 444
445 init_completion(&wil->wmi_ready);
59502647 446 init_completion(&wil->wmi_call);
2be7d22f
VK		 447
448 wil->pending_connect_cid = -1;
41d6b093 449 wil->bcast_vring = -1;
2be7d22f 450 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
047e5d74 451 setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil);
2be7d22f 452
d81079f1 453 INIT_WORK(&wil->connect_worker, wil_connect_worker);
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
097638a0 770 cancel_work_sync(&wil->disconnect_worker);
4821e6d8 771 wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false);
41d6b093 772 wil_bcast_fini(wil);
097638a0 773
9419b6a2
VK		 774 /* prevent NAPI from being scheduled */
775 bitmap_zero(wil->status, wil_status_last);
0fef1818 776
ed6f9dc6
VK		 777 if (wil->scan_request) {
778 wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
779 wil->scan_request);
047e5d74 780 del_timer_sync(&wil->scan_timer);
ed6f9dc6
VK		 781 cfg80211_scan_done(wil->scan_request, true);
782 wil->scan_request = NULL;
783 }
784
e4dbb093 785 wil_mask_irq(wil);
e08b5906 786
2be7d22f
VK		 787 wmi_event_flush(wil);
788
3277213f 789 flush_workqueue(wil->wq_service);
e08b5906 790 flush_workqueue(wil->wmi_wq);
2be7d22f 791
409ead54 792 wil_bl_crash_info(wil, false);
bbb2adc7 793 rc = wil_target_reset(wil);
8bf6adb9 794 wil_rx_fini(wil);
409ead54
VK		 795 if (rc) {
796 wil_bl_crash_info(wil, true);
bbb2adc7 797 return rc;
409ead54 798 }
bbb2adc7 799
2cd0f021 800 rc = wil_get_bl_info(wil);
f1ad8c93
VK		 801 if (rc == -EAGAIN && !load_fw) /* ignore RF error if not going up */
802 rc = 0;
2cd0f021
VK		 803 if (rc)
804 return rc;
805
806 if (load_fw) {
807 wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME,
808 WIL_FW2_NAME);
809
151a9706
VK		 810 wil_halt_cpu(wil);
811 /* Loading f/w from the file */
812 rc = wil_request_firmware(wil, WIL_FW_NAME);
813 if (rc)
814 return rc;
2cd0f021
VK		 815 rc = wil_request_firmware(wil, WIL_FW2_NAME);
816 if (rc)
817 return rc;
818
819 /* Mark FW as loaded from host */
b9eeb512 820 wil_s(wil, RGF_USER_USAGE_6, 1);
151a9706 821
2cd0f021
VK		 822 /* clear any interrupts which on-card-firmware
823 * may have set
824 */
151a9706 825 wil6210_clear_irq(wil);
2cd0f021
VK		 826 /* CAF_ICR - clear and mask */
827 /* it is W1C, clear by writing back same value */
b9eeb512
VK		 828 wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0);
829 wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0);
2cd0f021 830
151a9706 831 wil_release_cpu(wil);
151a9706 832 }
8bf6adb9 833
2be7d22f
VK		 834 /* init after reset */
835 wil->pending_connect_cid = -1;
02beaf1a 836 wil->ap_isolate = 0;
16735d02 837 reinit_completion(&wil->wmi_ready);
59502647 838 reinit_completion(&wil->wmi_call);
2be7d22f 839
2cd0f021
VK		 840 if (load_fw) {
841 wil_configure_interrupt_moderation(wil);
842 wil_unmask_irq(wil);
2be7d22f 843
2cd0f021
VK		 844 /* we just started MAC, wait for FW ready */
845 rc = wil_wait_for_fw_ready(wil);
cec94d8c
VK		 846 if (rc == 0) /* check FW is responsive */
847 rc = wmi_echo(wil);
2cd0f021 848 }
2be7d22f
VK		 849
850 return rc;
851}
852
ed6f9dc6
VK		 853void wil_fw_error_recovery(struct wil6210_priv *wil)
854{
855 wil_dbg_misc(wil, "starting fw error recovery\n");
c33407a8 856 wil->recovery_state = fw_recovery_pending;
ed6f9dc6
VK		 857 schedule_work(&wil->fw_error_worker);
858}
2be7d22f 859
73d839ae 860int __wil_up(struct wil6210_priv *wil)
2be7d22f
VK		 861{
862 struct net_device *ndev = wil_to_ndev(wil);
863 struct wireless_dev *wdev = wil->wdev;
2be7d22f 864 int rc;
2be7d22f 865
097638a0
VK		 866 WARN_ON(!mutex_is_locked(&wil->mutex));
867
2cd0f021 868 rc = wil_reset(wil, true);
2be7d22f
VK		 869 if (rc)
870 return rc;
871
e31b2562 872 /* Rx VRING. After MAC and beacon */
d3762b40 873 rc = wil_rx_init(wil, 1 << rx_ring_order);
e31b2562
VK		 874 if (rc)
875 return rc;
876
2be7d22f
VK		 877 switch (wdev->iftype) {
878 case NL80211_IFTYPE_STATION:
7743882d 879 wil_dbg_misc(wil, "type: STATION\n");
2be7d22f
VK		 880 ndev->type = ARPHRD_ETHER;
881 break;
882 case NL80211_IFTYPE_AP:
7743882d 883 wil_dbg_misc(wil, "type: AP\n");
2be7d22f
VK		 884 ndev->type = ARPHRD_ETHER;
885 break;
886 case NL80211_IFTYPE_P2P_CLIENT:
7743882d 887 wil_dbg_misc(wil, "type: P2P_CLIENT\n");
2be7d22f
VK		 888 ndev->type = ARPHRD_ETHER;
889 break;
890 case NL80211_IFTYPE_P2P_GO:
7743882d 891 wil_dbg_misc(wil, "type: P2P_GO\n");
2be7d22f
VK		 892 ndev->type = ARPHRD_ETHER;
893 break;
894 case NL80211_IFTYPE_MONITOR:
7743882d 895 wil_dbg_misc(wil, "type: Monitor\n");
2be7d22f
VK		 896 ndev->type = ARPHRD_IEEE80211_RADIOTAP;
897 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */
898 break;
899 default:
900 return -EOPNOTSUPP;
901 }
902
2be7d22f
VK		 903 /* MAC address - pre-requisite for other commands */
904 wmi_set_mac_address(wil, ndev->dev_addr);
905
73d839ae 906 wil_dbg_misc(wil, "NAPI enable\n");
e0287c4a
VK		 907 napi_enable(&wil->napi_rx);
908 napi_enable(&wil->napi_tx);
9419b6a2 909 set_bit(wil_status_napi_en, wil->status);
e0287c4a 910
f772ebfb
VK		 911 if (wil->platform_ops.bus_request)
912 wil->platform_ops.bus_request(wil->platform_handle,
913 WIL_MAX_BUS_REQUEST_KBPS);
914
2be7d22f
VK		 915 return 0;
916}
917
918int wil_up(struct wil6210_priv *wil)
919{
920 int rc;
921
9cf10d62
VK		 922 wil_dbg_misc(wil, "%s()\n", __func__);
923
2be7d22f
VK		 924 mutex_lock(&wil->mutex);
925 rc = __wil_up(wil);
926 mutex_unlock(&wil->mutex);
927
928 return rc;
929}
930
73d839ae 931int __wil_down(struct wil6210_priv *wil)
2be7d22f 932{
f172b563
DL		 933 int iter = WAIT_FOR_DISCONNECT_TIMEOUT_MS /
934 WAIT_FOR_DISCONNECT_INTERVAL_MS;
935
097638a0
VK		 936 WARN_ON(!mutex_is_locked(&wil->mutex));
937
f772ebfb
VK		 938 if (wil->platform_ops.bus_request)
939 wil->platform_ops.bus_request(wil->platform_handle, 0);
940
73d839ae 941 wil_disable_irq(wil);
9419b6a2 942 if (test_and_clear_bit(wil_status_napi_en, wil->status)) {
73d839ae
VK		 943 napi_disable(&wil->napi_rx);
944 napi_disable(&wil->napi_tx);
945 wil_dbg_misc(wil, "NAPI disable\n");
946 }
947 wil_enable_irq(wil);
e0287c4a 948
2be7d22f 949 if (wil->scan_request) {
2a91d7d0
VK		 950 wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
951 wil->scan_request);
047e5d74 952 del_timer_sync(&wil->scan_timer);
2be7d22f
VK		 953 cfg80211_scan_done(wil->scan_request, true);
954 wil->scan_request = NULL;
955 }
956
9419b6a2
VK		 957 if (test_bit(wil_status_fwconnected, wil->status) ||
958 test_bit(wil_status_fwconnecting, wil->status))
f172b563
DL		 959 wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0);
960
961 /* make sure wil is idle (not connected) */
962 mutex_unlock(&wil->mutex);
963 while (iter--) {
9419b6a2
VK		 964 int idle = !test_bit(wil_status_fwconnected, wil->status) &&
965 !test_bit(wil_status_fwconnecting, wil->status);
f172b563
DL		 966 if (idle)
967 break;
968 msleep(WAIT_FOR_DISCONNECT_INTERVAL_MS);
969 }
970 mutex_lock(&wil->mutex);
971
972 if (!iter)
973 wil_err(wil, "timeout waiting for idle FW/HW\n");
974
2cd0f021 975 wil_reset(wil, false);
2be7d22f
VK		 976
977 return 0;
978}
979
980int wil_down(struct wil6210_priv *wil)
981{
982 int rc;
983
9cf10d62
VK		 984 wil_dbg_misc(wil, "%s()\n", __func__);
985
c33407a8 986 wil_set_recovery_state(wil, fw_recovery_idle);
2be7d22f
VK		 987 mutex_lock(&wil->mutex);
988 rc = __wil_down(wil);
989 mutex_unlock(&wil->mutex);
990
991 return rc;
992}
3df2cd36
VK		 993
994int wil_find_cid(struct wil6210_priv *wil, const u8 *mac)
995{
996 int i;
997 int rc = -ENOENT;
998
999 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
1000 if ((wil->sta[i].status != wil_sta_unused) &&
108d1eb6 1001 ether_addr_equal(wil->sta[i].addr, mac)) {
3df2cd36
VK		 1002 rc = i;
1003 break;
1004 }
1005 }
1006
1007 return rc;
1008}
Linux kernel - Deliverables
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