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Merge branch 'for-linville' of git://github.com/kvalo/ath
[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / wmi.c
1 /*
2 * Copyright (c) 2012-2014 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/etherdevice.h>
19 #include <linux/if_arp.h>
20
21 #include "wil6210.h"
22 #include "txrx.h"
23 #include "wmi.h"
24 #include "trace.h"
25
26 static uint max_assoc_sta = 1;
27 module_param(max_assoc_sta, uint, S_IRUGO | S_IWUSR);
28 MODULE_PARM_DESC(max_assoc_sta, " Max number of stations associated to the AP");
29
30 /**
31 * WMI event receiving - theory of operations
32 *
33 * When firmware about to report WMI event, it fills memory area
34 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
35 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
36 *
37 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the
38 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
39 * and handles events within the @wmi_event_worker. Every event get detached
40 * from list, processed and deleted.
41 *
42 * Purpose for this mechanism is to release IRQ thread; otherwise,
43 * if WMI event handling involves another WMI command flow, this 2-nd flow
44 * won't be completed because of blocked IRQ thread.
45 */
46
47 /**
48 * Addressing - theory of operations
49 *
50 * There are several buses present on the WIL6210 card.
51 * Same memory areas are visible at different address on
52 * the different busses. There are 3 main bus masters:
53 * - MAC CPU (ucode)
54 * - User CPU (firmware)
55 * - AHB (host)
56 *
57 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
58 * AHB addresses starting from 0x880000
59 *
60 * Internally, firmware uses addresses that allows faster access but
61 * are invisible from the host. To read from these addresses, alternative
62 * AHB address must be used.
63 *
64 * Memory mapping
65 * Linker address PCI/Host address
66 * 0x880000 .. 0xa80000 2Mb BAR0
67 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM
68 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH
69 */
70
71 /**
72 * @fw_mapping provides memory remapping table
73 *
74 * array size should be in sync with the declaration in the wil6210.h
75 */
76 const struct fw_map fw_mapping[] = {
77 {0x000000, 0x040000, 0x8c0000, "fw_code"}, /* FW code RAM 256k */
78 {0x800000, 0x808000, 0x900000, "fw_data"}, /* FW data RAM 32k */
79 {0x840000, 0x860000, 0x908000, "fw_peri"}, /* periph. data RAM 128k */
80 {0x880000, 0x88a000, 0x880000, "rgf"}, /* various RGF 40k */
81 {0x88a000, 0x88b000, 0x88a000, "AGC_tbl"}, /* AGC table 4k */
82 {0x88b000, 0x88c000, 0x88b000, "rgf_ext"}, /* Pcie_ext_rgf 4k */
83 {0x8c0000, 0x949000, 0x8c0000, "upper"}, /* upper area 548k */
84 /*
85 * 920000..930000 ucode code RAM
86 * 930000..932000 ucode data RAM
87 * 932000..949000 back-door debug data
88 */
89 };
90
91 /**
92 * return AHB address for given firmware/ucode internal (linker) address
93 * @x - internal address
94 * If address have no valid AHB mapping, return 0
95 */
96 static u32 wmi_addr_remap(u32 x)
97 {
98 uint i;
99
100 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
101 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
102 return x + fw_mapping[i].host - fw_mapping[i].from;
103 }
104
105 return 0;
106 }
107
108 /**
109 * Check address validity for WMI buffer; remap if needed
110 * @ptr - internal (linker) fw/ucode address
111 *
112 * Valid buffer should be DWORD aligned
113 *
114 * return address for accessing buffer from the host;
115 * if buffer is not valid, return NULL.
116 */
117 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
118 {
119 u32 off;
120 u32 ptr = le32_to_cpu(ptr_);
121
122 if (ptr % 4)
123 return NULL;
124
125 ptr = wmi_addr_remap(ptr);
126 if (ptr < WIL6210_FW_HOST_OFF)
127 return NULL;
128
129 off = HOSTADDR(ptr);
130 if (off > WIL6210_MEM_SIZE - 4)
131 return NULL;
132
133 return wil->csr + off;
134 }
135
136 /**
137 * Check address validity
138 */
139 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
140 {
141 u32 off;
142
143 if (ptr % 4)
144 return NULL;
145
146 if (ptr < WIL6210_FW_HOST_OFF)
147 return NULL;
148
149 off = HOSTADDR(ptr);
150 if (off > WIL6210_MEM_SIZE - 4)
151 return NULL;
152
153 return wil->csr + off;
154 }
155
156 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
157 struct wil6210_mbox_hdr *hdr)
158 {
159 void __iomem *src = wmi_buffer(wil, ptr);
160 if (!src)
161 return -EINVAL;
162
163 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
164
165 return 0;
166 }
167
168 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
169 {
170 struct {
171 struct wil6210_mbox_hdr hdr;
172 struct wil6210_mbox_hdr_wmi wmi;
173 } __packed cmd = {
174 .hdr = {
175 .type = WIL_MBOX_HDR_TYPE_WMI,
176 .flags = 0,
177 .len = cpu_to_le16(sizeof(cmd.wmi) + len),
178 },
179 .wmi = {
180 .mid = 0,
181 .id = cpu_to_le16(cmdid),
182 },
183 };
184 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
185 struct wil6210_mbox_ring_desc d_head;
186 u32 next_head;
187 void __iomem *dst;
188 void __iomem *head = wmi_addr(wil, r->head);
189 uint retry;
190
191 if (sizeof(cmd) + len > r->entry_size) {
192 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
193 (int)(sizeof(cmd) + len), r->entry_size);
194 return -ERANGE;
195 }
196
197 might_sleep();
198
199 if (!test_bit(wil_status_fwready, &wil->status)) {
200 wil_err(wil, "WMI: cannot send command while FW not ready\n");
201 return -EAGAIN;
202 }
203
204 if (!head) {
205 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
206 return -EINVAL;
207 }
208 /* read Tx head till it is not busy */
209 for (retry = 5; retry > 0; retry--) {
210 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
211 if (d_head.sync == 0)
212 break;
213 msleep(20);
214 }
215 if (d_head.sync != 0) {
216 wil_err(wil, "WMI head busy\n");
217 return -EBUSY;
218 }
219 /* next head */
220 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
221 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
222 /* wait till FW finish with previous command */
223 for (retry = 5; retry > 0; retry--) {
224 r->tail = ioread32(wil->csr + HOST_MBOX +
225 offsetof(struct wil6210_mbox_ctl, tx.tail));
226 if (next_head != r->tail)
227 break;
228 msleep(20);
229 }
230 if (next_head == r->tail) {
231 wil_err(wil, "WMI ring full\n");
232 return -EBUSY;
233 }
234 dst = wmi_buffer(wil, d_head.addr);
235 if (!dst) {
236 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
237 le32_to_cpu(d_head.addr));
238 return -EINVAL;
239 }
240 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
241 /* set command */
242 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
243 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
244 sizeof(cmd), true);
245 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
246 len, true);
247 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
248 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
249 /* mark entry as full */
250 iowrite32(1, wil->csr + HOSTADDR(r->head) +
251 offsetof(struct wil6210_mbox_ring_desc, sync));
252 /* advance next ptr */
253 iowrite32(r->head = next_head, wil->csr + HOST_MBOX +
254 offsetof(struct wil6210_mbox_ctl, tx.head));
255
256 trace_wil6210_wmi_cmd(&cmd.wmi, buf, len);
257
258 /* interrupt to FW */
259 iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT);
260
261 return 0;
262 }
263
264 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
265 {
266 int rc;
267
268 mutex_lock(&wil->wmi_mutex);
269 rc = __wmi_send(wil, cmdid, buf, len);
270 mutex_unlock(&wil->wmi_mutex);
271
272 return rc;
273 }
274
275 /*=== Event handlers ===*/
276 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
277 {
278 struct net_device *ndev = wil_to_ndev(wil);
279 struct wireless_dev *wdev = wil->wdev;
280 struct wmi_ready_event *evt = d;
281 wil->fw_version = le32_to_cpu(evt->sw_version);
282 wil->n_mids = evt->numof_additional_mids;
283
284 wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
285 evt->mac, wil->n_mids);
286
287 if (!is_valid_ether_addr(ndev->dev_addr)) {
288 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
289 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
290 }
291 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
292 "%d", wil->fw_version);
293 }
294
295 static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
296 int len)
297 {
298 wil_dbg_wmi(wil, "WMI: got FW ready event\n");
299
300 set_bit(wil_status_fwready, &wil->status);
301 /* reuse wmi_ready for the firmware ready indication */
302 complete(&wil->wmi_ready);
303 }
304
305 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
306 {
307 struct wmi_rx_mgmt_packet_event *data = d;
308 struct wiphy *wiphy = wil_to_wiphy(wil);
309 struct ieee80211_mgmt *rx_mgmt_frame =
310 (struct ieee80211_mgmt *)data->payload;
311 int ch_no = data->info.channel+1;
312 u32 freq = ieee80211_channel_to_frequency(ch_no,
313 IEEE80211_BAND_60GHZ);
314 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
315 s32 signal = data->info.sqi;
316 __le16 fc = rx_mgmt_frame->frame_control;
317 u32 d_len = le32_to_cpu(data->info.len);
318 u16 d_status = le16_to_cpu(data->info.status);
319
320 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d SQI %d%%\n",
321 data->info.channel, data->info.mcs, data->info.snr,
322 data->info.sqi);
323 wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
324 le16_to_cpu(fc));
325 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
326 data->info.qid, data->info.mid, data->info.cid);
327
328 if (!channel) {
329 wil_err(wil, "Frame on unsupported channel\n");
330 return;
331 }
332
333 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
334 struct cfg80211_bss *bss;
335 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
336 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
337 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
338 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
339 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
340 u.beacon.variable);
341 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
342 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
343 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
344 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
345 ie_len, true);
346
347 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
348 d_len, signal, GFP_KERNEL);
349 if (bss) {
350 wil_dbg_wmi(wil, "Added BSS %pM\n",
351 rx_mgmt_frame->bssid);
352 cfg80211_put_bss(wiphy, bss);
353 } else {
354 wil_err(wil, "cfg80211_inform_bss() failed\n");
355 }
356 } else {
357 cfg80211_rx_mgmt(wil->wdev, freq, signal,
358 (void *)rx_mgmt_frame, d_len, 0, GFP_ATOMIC);
359 }
360 }
361
362 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
363 void *d, int len)
364 {
365 if (wil->scan_request) {
366 struct wmi_scan_complete_event *data = d;
367 bool aborted = (data->status != WMI_SCAN_SUCCESS);
368
369 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
370 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
371 wil->scan_request, aborted);
372
373 del_timer_sync(&wil->scan_timer);
374 cfg80211_scan_done(wil->scan_request, aborted);
375 wil->scan_request = NULL;
376 } else {
377 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
378 }
379 }
380
381 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
382 {
383 struct net_device *ndev = wil_to_ndev(wil);
384 struct wireless_dev *wdev = wil->wdev;
385 struct wmi_connect_event *evt = d;
386 int ch; /* channel number */
387 struct station_info sinfo;
388 u8 *assoc_req_ie, *assoc_resp_ie;
389 size_t assoc_req_ielen, assoc_resp_ielen;
390 /* capinfo(u16) + listen_interval(u16) + IEs */
391 const size_t assoc_req_ie_offset = sizeof(u16) * 2;
392 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
393 const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
394
395 if (len < sizeof(*evt)) {
396 wil_err(wil, "Connect event too short : %d bytes\n", len);
397 return;
398 }
399 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
400 evt->assoc_resp_len) {
401 wil_err(wil,
402 "Connect event corrupted : %d != %d + %d + %d + %d\n",
403 len, (int)sizeof(*evt), evt->beacon_ie_len,
404 evt->assoc_req_len, evt->assoc_resp_len);
405 return;
406 }
407 if (evt->cid >= WIL6210_MAX_CID) {
408 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
409 return;
410 }
411
412 ch = evt->channel + 1;
413 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
414 evt->bssid, ch, evt->cid);
415 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
416 evt->assoc_info, len - sizeof(*evt), true);
417
418 /* figure out IE's */
419 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
420 assoc_req_ie_offset];
421 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
422 if (evt->assoc_req_len <= assoc_req_ie_offset) {
423 assoc_req_ie = NULL;
424 assoc_req_ielen = 0;
425 }
426
427 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
428 evt->assoc_req_len +
429 assoc_resp_ie_offset];
430 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
431 if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
432 assoc_resp_ie = NULL;
433 assoc_resp_ielen = 0;
434 }
435
436 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
437 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
438 if (!test_bit(wil_status_fwconnecting, &wil->status)) {
439 wil_err(wil, "Not in connecting state\n");
440 return;
441 }
442 del_timer_sync(&wil->connect_timer);
443 cfg80211_connect_result(ndev, evt->bssid,
444 assoc_req_ie, assoc_req_ielen,
445 assoc_resp_ie, assoc_resp_ielen,
446 WLAN_STATUS_SUCCESS, GFP_KERNEL);
447
448 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
449 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
450 memset(&sinfo, 0, sizeof(sinfo));
451
452 sinfo.generation = wil->sinfo_gen++;
453
454 if (assoc_req_ie) {
455 sinfo.assoc_req_ies = assoc_req_ie;
456 sinfo.assoc_req_ies_len = assoc_req_ielen;
457 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
458 }
459
460 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
461 }
462 clear_bit(wil_status_fwconnecting, &wil->status);
463 set_bit(wil_status_fwconnected, &wil->status);
464
465 /* FIXME FW can transmit only ucast frames to peer */
466 /* FIXME real ring_id instead of hard coded 0 */
467 memcpy(wil->sta[evt->cid].addr, evt->bssid, ETH_ALEN);
468 wil->sta[evt->cid].status = wil_sta_conn_pending;
469
470 wil->pending_connect_cid = evt->cid;
471 queue_work(wil->wmi_wq_conn, &wil->connect_worker);
472 }
473
474 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
475 void *d, int len)
476 {
477 struct wmi_disconnect_event *evt = d;
478
479 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
480 evt->bssid,
481 evt->protocol_reason_status, evt->disconnect_reason);
482
483 wil->sinfo_gen++;
484
485 mutex_lock(&wil->mutex);
486 wil6210_disconnect(wil, evt->bssid);
487 mutex_unlock(&wil->mutex);
488 }
489
490 /*
491 * Firmware reports EAPOL frame using WME event.
492 * Reconstruct Ethernet frame and deliver it via normal Rx
493 */
494 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
495 void *d, int len)
496 {
497 struct net_device *ndev = wil_to_ndev(wil);
498 struct wmi_eapol_rx_event *evt = d;
499 u16 eapol_len = le16_to_cpu(evt->eapol_len);
500 int sz = eapol_len + ETH_HLEN;
501 struct sk_buff *skb;
502 struct ethhdr *eth;
503 int cid;
504 struct wil_net_stats *stats = NULL;
505
506 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
507 evt->src_mac);
508
509 cid = wil_find_cid(wil, evt->src_mac);
510 if (cid >= 0)
511 stats = &wil->sta[cid].stats;
512
513 if (eapol_len > 196) { /* TODO: revisit size limit */
514 wil_err(wil, "EAPOL too large\n");
515 return;
516 }
517
518 skb = alloc_skb(sz, GFP_KERNEL);
519 if (!skb) {
520 wil_err(wil, "Failed to allocate skb\n");
521 return;
522 }
523
524 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
525 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
526 memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
527 eth->h_proto = cpu_to_be16(ETH_P_PAE);
528 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
529 skb->protocol = eth_type_trans(skb, ndev);
530 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
531 ndev->stats.rx_packets++;
532 ndev->stats.rx_bytes += sz;
533 if (stats) {
534 stats->rx_packets++;
535 stats->rx_bytes += sz;
536 }
537 } else {
538 ndev->stats.rx_dropped++;
539 if (stats)
540 stats->rx_dropped++;
541 }
542 }
543
544 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len)
545 {
546 struct net_device *ndev = wil_to_ndev(wil);
547 struct wmi_data_port_open_event *evt = d;
548 u8 cid = evt->cid;
549
550 wil_dbg_wmi(wil, "Link UP for CID %d\n", cid);
551
552 if (cid >= ARRAY_SIZE(wil->sta)) {
553 wil_err(wil, "Link UP for invalid CID %d\n", cid);
554 return;
555 }
556
557 wil->sta[cid].data_port_open = true;
558 netif_carrier_on(ndev);
559 }
560
561 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len)
562 {
563 struct net_device *ndev = wil_to_ndev(wil);
564 struct wmi_wbe_link_down_event *evt = d;
565 u8 cid = evt->cid;
566
567 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n",
568 cid, le32_to_cpu(evt->reason));
569
570 if (cid >= ARRAY_SIZE(wil->sta)) {
571 wil_err(wil, "Link DOWN for invalid CID %d\n", cid);
572 return;
573 }
574
575 wil->sta[cid].data_port_open = false;
576 netif_carrier_off(ndev);
577 }
578
579 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
580 int len)
581 {
582 struct wmi_vring_ba_status_event *evt = d;
583 struct wil_sta_info *sta;
584 uint i, cid;
585
586 /* TODO: use Rx BA status, not Tx one */
587
588 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n",
589 evt->ringid,
590 evt->status == WMI_BA_AGREED ? "OK" : "N/A",
591 evt->agg_wsize, __le16_to_cpu(evt->ba_timeout));
592
593 if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
594 wil_err(wil, "invalid ring id %d\n", evt->ringid);
595 return;
596 }
597
598 cid = wil->vring2cid_tid[evt->ringid][0];
599 if (cid >= WIL6210_MAX_CID) {
600 wil_err(wil, "invalid CID %d for vring %d\n", cid, evt->ringid);
601 return;
602 }
603
604 sta = &wil->sta[cid];
605 if (sta->status == wil_sta_unused) {
606 wil_err(wil, "CID %d unused\n", cid);
607 return;
608 }
609
610 wil_dbg_wmi(wil, "BACK for CID %d %pM\n", cid, sta->addr);
611 for (i = 0; i < WIL_STA_TID_NUM; i++) {
612 struct wil_tid_ampdu_rx *r = sta->tid_rx[i];
613 sta->tid_rx[i] = NULL;
614 wil_tid_ampdu_rx_free(wil, r);
615 if ((evt->status == WMI_BA_AGREED) && evt->agg_wsize)
616 sta->tid_rx[i] = wil_tid_ampdu_rx_alloc(wil,
617 evt->agg_wsize, 0);
618 }
619 }
620
621 static const struct {
622 int eventid;
623 void (*handler)(struct wil6210_priv *wil, int eventid,
624 void *data, int data_len);
625 } wmi_evt_handlers[] = {
626 {WMI_READY_EVENTID, wmi_evt_ready},
627 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready},
628 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt},
629 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete},
630 {WMI_CONNECT_EVENTID, wmi_evt_connect},
631 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect},
632 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
633 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup},
634 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown},
635 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status},
636 };
637
638 /*
639 * Run in IRQ context
640 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
641 * that will be eventually handled by the @wmi_event_worker in the thread
642 * context of thread "wil6210_wmi"
643 */
644 void wmi_recv_cmd(struct wil6210_priv *wil)
645 {
646 struct wil6210_mbox_ring_desc d_tail;
647 struct wil6210_mbox_hdr hdr;
648 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
649 struct pending_wmi_event *evt;
650 u8 *cmd;
651 void __iomem *src;
652 ulong flags;
653 unsigned n;
654
655 if (!test_bit(wil_status_reset_done, &wil->status)) {
656 wil_err(wil, "Reset not completed\n");
657 return;
658 }
659
660 for (n = 0;; n++) {
661 u16 len;
662 bool q;
663
664 r->head = ioread32(wil->csr + HOST_MBOX +
665 offsetof(struct wil6210_mbox_ctl, rx.head));
666 if (r->tail == r->head)
667 break;
668
669 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
670 r->head, r->tail);
671 /* read cmd descriptor from tail */
672 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
673 sizeof(struct wil6210_mbox_ring_desc));
674 if (d_tail.sync == 0) {
675 wil_err(wil, "Mbox evt not owned by FW?\n");
676 break;
677 }
678
679 /* read cmd header from descriptor */
680 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
681 wil_err(wil, "Mbox evt at 0x%08x?\n",
682 le32_to_cpu(d_tail.addr));
683 break;
684 }
685 len = le16_to_cpu(hdr.len);
686 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
687 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
688 hdr.flags);
689
690 /* read cmd buffer from descriptor */
691 src = wmi_buffer(wil, d_tail.addr) +
692 sizeof(struct wil6210_mbox_hdr);
693 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
694 event.wmi) + len, 4),
695 GFP_KERNEL);
696 if (!evt)
697 break;
698
699 evt->event.hdr = hdr;
700 cmd = (void *)&evt->event.wmi;
701 wil_memcpy_fromio_32(cmd, src, len);
702 /* mark entry as empty */
703 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
704 offsetof(struct wil6210_mbox_ring_desc, sync));
705 /* indicate */
706 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
707 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
708 struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi;
709 u16 id = le16_to_cpu(wmi->id);
710 u32 tstamp = le32_to_cpu(wmi->timestamp);
711 wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
712 id, wmi->mid, tstamp);
713 trace_wil6210_wmi_event(wmi, &wmi[1],
714 len - sizeof(*wmi));
715 }
716 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
717 &evt->event.hdr, sizeof(hdr) + len, true);
718
719 /* advance tail */
720 r->tail = r->base + ((r->tail - r->base +
721 sizeof(struct wil6210_mbox_ring_desc)) % r->size);
722 iowrite32(r->tail, wil->csr + HOST_MBOX +
723 offsetof(struct wil6210_mbox_ctl, rx.tail));
724
725 /* add to the pending list */
726 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
727 list_add_tail(&evt->list, &wil->pending_wmi_ev);
728 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
729 q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
730 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
731 }
732 /* normally, 1 event per IRQ should be processed */
733 wil_dbg_wmi(wil, "%s -> %d events queued\n", __func__, n);
734 }
735
736 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
737 u16 reply_id, void *reply, u8 reply_size, int to_msec)
738 {
739 int rc;
740 int remain;
741
742 mutex_lock(&wil->wmi_mutex);
743
744 rc = __wmi_send(wil, cmdid, buf, len);
745 if (rc)
746 goto out;
747
748 wil->reply_id = reply_id;
749 wil->reply_buf = reply;
750 wil->reply_size = reply_size;
751 remain = wait_for_completion_timeout(&wil->wmi_ready,
752 msecs_to_jiffies(to_msec));
753 if (0 == remain) {
754 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
755 cmdid, reply_id, to_msec);
756 rc = -ETIME;
757 } else {
758 wil_dbg_wmi(wil,
759 "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
760 cmdid, reply_id,
761 to_msec - jiffies_to_msecs(remain));
762 }
763 wil->reply_id = 0;
764 wil->reply_buf = NULL;
765 wil->reply_size = 0;
766 out:
767 mutex_unlock(&wil->wmi_mutex);
768
769 return rc;
770 }
771
772 int wmi_echo(struct wil6210_priv *wil)
773 {
774 struct wmi_echo_cmd cmd = {
775 .value = cpu_to_le32(0x12345678),
776 };
777
778 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
779 WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
780 }
781
782 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
783 {
784 struct wmi_set_mac_address_cmd cmd;
785
786 memcpy(cmd.mac, addr, ETH_ALEN);
787
788 wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
789
790 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
791 }
792
793 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
794 {
795 int rc;
796
797 struct wmi_pcp_start_cmd cmd = {
798 .bcon_interval = cpu_to_le16(bi),
799 .network_type = wmi_nettype,
800 .disable_sec_offload = 1,
801 .channel = chan - 1,
802 .pcp_max_assoc_sta = max_assoc_sta,
803 };
804 struct {
805 struct wil6210_mbox_hdr_wmi wmi;
806 struct wmi_pcp_started_event evt;
807 } __packed reply;
808
809 if (!wil->secure_pcp)
810 cmd.disable_sec = 1;
811
812 if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
813 (cmd.pcp_max_assoc_sta <= 0)) {
814 wil_info(wil,
815 "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
816 max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
817 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
818 }
819
820 /*
821 * Processing time may be huge, in case of secure AP it takes about
822 * 3500ms for FW to start AP
823 */
824 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
825 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
826 if (rc)
827 return rc;
828
829 if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
830 rc = -EINVAL;
831
832 return rc;
833 }
834
835 int wmi_pcp_stop(struct wil6210_priv *wil)
836 {
837 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
838 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
839 }
840
841 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
842 {
843 struct wmi_set_ssid_cmd cmd = {
844 .ssid_len = cpu_to_le32(ssid_len),
845 };
846
847 if (ssid_len > sizeof(cmd.ssid))
848 return -EINVAL;
849
850 memcpy(cmd.ssid, ssid, ssid_len);
851
852 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
853 }
854
855 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
856 {
857 int rc;
858 struct {
859 struct wil6210_mbox_hdr_wmi wmi;
860 struct wmi_set_ssid_cmd cmd;
861 } __packed reply;
862 int len; /* reply.cmd.ssid_len in CPU order */
863
864 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
865 &reply, sizeof(reply), 20);
866 if (rc)
867 return rc;
868
869 len = le32_to_cpu(reply.cmd.ssid_len);
870 if (len > sizeof(reply.cmd.ssid))
871 return -EINVAL;
872
873 *ssid_len = len;
874 memcpy(ssid, reply.cmd.ssid, len);
875
876 return 0;
877 }
878
879 int wmi_set_channel(struct wil6210_priv *wil, int channel)
880 {
881 struct wmi_set_pcp_channel_cmd cmd = {
882 .channel = channel - 1,
883 };
884
885 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
886 }
887
888 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
889 {
890 int rc;
891 struct {
892 struct wil6210_mbox_hdr_wmi wmi;
893 struct wmi_set_pcp_channel_cmd cmd;
894 } __packed reply;
895
896 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
897 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
898 if (rc)
899 return rc;
900
901 if (reply.cmd.channel > 3)
902 return -EINVAL;
903
904 *channel = reply.cmd.channel + 1;
905
906 return 0;
907 }
908
909 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
910 {
911 struct wmi_p2p_cfg_cmd cmd = {
912 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
913 .channel = channel - 1,
914 };
915
916 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
917 }
918
919 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
920 const void *mac_addr)
921 {
922 struct wmi_delete_cipher_key_cmd cmd = {
923 .key_index = key_index,
924 };
925
926 if (mac_addr)
927 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
928
929 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
930 }
931
932 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
933 const void *mac_addr, int key_len, const void *key)
934 {
935 struct wmi_add_cipher_key_cmd cmd = {
936 .key_index = key_index,
937 .key_usage = WMI_KEY_USE_PAIRWISE,
938 .key_len = key_len,
939 };
940
941 if (!key || (key_len > sizeof(cmd.key)))
942 return -EINVAL;
943
944 memcpy(cmd.key, key, key_len);
945 if (mac_addr)
946 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
947
948 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
949 }
950
951 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
952 {
953 int rc;
954 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
955 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
956 if (!cmd)
957 return -ENOMEM;
958
959 cmd->mgmt_frm_type = type;
960 /* BUG: FW API define ieLen as u8. Will fix FW */
961 cmd->ie_len = cpu_to_le16(ie_len);
962 memcpy(cmd->ie_info, ie, ie_len);
963 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
964 kfree(cmd);
965
966 return rc;
967 }
968
969 /**
970 * wmi_rxon - turn radio on/off
971 * @on: turn on if true, off otherwise
972 *
973 * Only switch radio. Channel should be set separately.
974 * No timeout for rxon - radio turned on forever unless some other call
975 * turns it off
976 */
977 int wmi_rxon(struct wil6210_priv *wil, bool on)
978 {
979 int rc;
980 struct {
981 struct wil6210_mbox_hdr_wmi wmi;
982 struct wmi_listen_started_event evt;
983 } __packed reply;
984
985 wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
986
987 if (on) {
988 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
989 WMI_LISTEN_STARTED_EVENTID,
990 &reply, sizeof(reply), 100);
991 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
992 rc = -EINVAL;
993 } else {
994 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
995 WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
996 }
997
998 return rc;
999 }
1000
1001 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1002 {
1003 struct wireless_dev *wdev = wil->wdev;
1004 struct net_device *ndev = wil_to_ndev(wil);
1005 struct wmi_cfg_rx_chain_cmd cmd = {
1006 .action = WMI_RX_CHAIN_ADD,
1007 .rx_sw_ring = {
1008 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
1009 .ring_mem_base = cpu_to_le64(vring->pa),
1010 .ring_size = cpu_to_le16(vring->size),
1011 },
1012 .mid = 0, /* TODO - what is it? */
1013 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1014 .reorder_type = WMI_RX_SW_REORDER,
1015 };
1016 struct {
1017 struct wil6210_mbox_hdr_wmi wmi;
1018 struct wmi_cfg_rx_chain_done_event evt;
1019 } __packed evt;
1020 int rc;
1021
1022 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1023 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1024
1025 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1026 if (ch)
1027 cmd.sniffer_cfg.channel = ch->hw_value - 1;
1028 cmd.sniffer_cfg.phy_info_mode =
1029 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1030 cmd.sniffer_cfg.phy_support =
1031 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1032 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
1033 } else {
1034 /* Initialize offload (in non-sniffer mode).
1035 * Linux IP stack always calculates IP checksum
1036 * HW always calculate TCP/UDP checksum
1037 */
1038 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1039 }
1040 /* typical time for secure PCP is 840ms */
1041 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1042 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1043 if (rc)
1044 return rc;
1045
1046 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1047
1048 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1049 le32_to_cpu(evt.evt.status), vring->hwtail);
1050
1051 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1052 rc = -EINVAL;
1053
1054 return rc;
1055 }
1056
1057 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r)
1058 {
1059 int rc;
1060 struct wmi_temp_sense_cmd cmd = {
1061 .measure_marlon_m_en = cpu_to_le32(!!t_m),
1062 .measure_marlon_r_en = cpu_to_le32(!!t_r),
1063 };
1064 struct {
1065 struct wil6210_mbox_hdr_wmi wmi;
1066 struct wmi_temp_sense_done_event evt;
1067 } __packed reply;
1068
1069 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1070 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1071 if (rc)
1072 return rc;
1073
1074 if (t_m)
1075 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000);
1076 if (t_r)
1077 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000);
1078
1079 return 0;
1080 }
1081
1082 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason)
1083 {
1084 struct wmi_disconnect_sta_cmd cmd = {
1085 .disconnect_reason = cpu_to_le16(reason),
1086 };
1087 memcpy(cmd.dst_mac, mac, ETH_ALEN);
1088
1089 wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1090
1091 return wmi_send(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd));
1092 }
1093
1094 void wmi_event_flush(struct wil6210_priv *wil)
1095 {
1096 struct pending_wmi_event *evt, *t;
1097
1098 wil_dbg_wmi(wil, "%s()\n", __func__);
1099
1100 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1101 list_del(&evt->list);
1102 kfree(evt);
1103 }
1104 }
1105
1106 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1107 void *d, int len)
1108 {
1109 uint i;
1110
1111 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1112 if (wmi_evt_handlers[i].eventid == id) {
1113 wmi_evt_handlers[i].handler(wil, id, d, len);
1114 return true;
1115 }
1116 }
1117
1118 return false;
1119 }
1120
1121 static void wmi_event_handle(struct wil6210_priv *wil,
1122 struct wil6210_mbox_hdr *hdr)
1123 {
1124 u16 len = le16_to_cpu(hdr->len);
1125
1126 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1127 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1128 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1129 void *evt_data = (void *)(&wmi[1]);
1130 u16 id = le16_to_cpu(wmi->id);
1131 /* check if someone waits for this event */
1132 if (wil->reply_id && wil->reply_id == id) {
1133 if (wil->reply_buf) {
1134 memcpy(wil->reply_buf, wmi,
1135 min(len, wil->reply_size));
1136 } else {
1137 wmi_evt_call_handler(wil, id, evt_data,
1138 len - sizeof(*wmi));
1139 }
1140 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
1141 complete(&wil->wmi_ready);
1142 return;
1143 }
1144 /* unsolicited event */
1145 /* search for handler */
1146 if (!wmi_evt_call_handler(wil, id, evt_data,
1147 len - sizeof(*wmi))) {
1148 wil_err(wil, "Unhandled event 0x%04x\n", id);
1149 }
1150 } else {
1151 wil_err(wil, "Unknown event type\n");
1152 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1153 hdr, sizeof(*hdr) + len, true);
1154 }
1155 }
1156
1157 /*
1158 * Retrieve next WMI event from the pending list
1159 */
1160 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1161 {
1162 ulong flags;
1163 struct list_head *ret = NULL;
1164
1165 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1166
1167 if (!list_empty(&wil->pending_wmi_ev)) {
1168 ret = wil->pending_wmi_ev.next;
1169 list_del(ret);
1170 }
1171
1172 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1173
1174 return ret;
1175 }
1176
1177 /*
1178 * Handler for the WMI events
1179 */
1180 void wmi_event_worker(struct work_struct *work)
1181 {
1182 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1183 wmi_event_worker);
1184 struct pending_wmi_event *evt;
1185 struct list_head *lh;
1186
1187 while ((lh = next_wmi_ev(wil)) != NULL) {
1188 evt = list_entry(lh, struct pending_wmi_event, list);
1189 wmi_event_handle(wil, &evt->event.hdr);
1190 kfree(evt);
1191 }
1192 }
Linux kernel - Deliverables
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