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net: cdc_ncm: update datagram size after changing mtu
[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / wmi.c
1 /*
2 * Copyright (c) 2012-2016 Qualcomm Atheros, Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/moduleparam.h>
18 #include <linux/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 = WIL6210_MAX_CID;
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 int agg_wsize; /* = 0; */
31 module_param(agg_wsize, int, S_IRUGO | S_IWUSR);
32 MODULE_PARM_DESC(agg_wsize, " Window size for Tx Block Ack after connect;"
33 " 0 - use default; < 0 - don't auto-establish");
34
35 /**
36 * WMI event receiving - theory of operations
37 *
38 * When firmware about to report WMI event, it fills memory area
39 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
40 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
41 *
42 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the
43 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
44 * and handles events within the @wmi_event_worker. Every event get detached
45 * from list, processed and deleted.
46 *
47 * Purpose for this mechanism is to release IRQ thread; otherwise,
48 * if WMI event handling involves another WMI command flow, this 2-nd flow
49 * won't be completed because of blocked IRQ thread.
50 */
51
52 /**
53 * Addressing - theory of operations
54 *
55 * There are several buses present on the WIL6210 card.
56 * Same memory areas are visible at different address on
57 * the different busses. There are 3 main bus masters:
58 * - MAC CPU (ucode)
59 * - User CPU (firmware)
60 * - AHB (host)
61 *
62 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
63 * AHB addresses starting from 0x880000
64 *
65 * Internally, firmware uses addresses that allows faster access but
66 * are invisible from the host. To read from these addresses, alternative
67 * AHB address must be used.
68 *
69 * Memory mapping
70 * Linker address PCI/Host address
71 * 0x880000 .. 0xa80000 2Mb BAR0
72 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM
73 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH
74 */
75
76 /**
77 * @fw_mapping provides memory remapping table
78 *
79 * array size should be in sync with the declaration in the wil6210.h
80 */
81 const struct fw_map fw_mapping[] = {
82 {0x000000, 0x040000, 0x8c0000, "fw_code"}, /* FW code RAM 256k */
83 {0x800000, 0x808000, 0x900000, "fw_data"}, /* FW data RAM 32k */
84 {0x840000, 0x860000, 0x908000, "fw_peri"}, /* periph. data RAM 128k */
85 {0x880000, 0x88a000, 0x880000, "rgf"}, /* various RGF 40k */
86 {0x88a000, 0x88b000, 0x88a000, "AGC_tbl"}, /* AGC table 4k */
87 {0x88b000, 0x88c000, 0x88b000, "rgf_ext"}, /* Pcie_ext_rgf 4k */
88 {0x88c000, 0x88c200, 0x88c000, "mac_rgf_ext"}, /* mac_ext_rgf 512b */
89 {0x8c0000, 0x949000, 0x8c0000, "upper"}, /* upper area 548k */
90 /*
91 * 920000..930000 ucode code RAM
92 * 930000..932000 ucode data RAM
93 * 932000..949000 back-door debug data
94 */
95 };
96
97 /**
98 * return AHB address for given firmware/ucode internal (linker) address
99 * @x - internal address
100 * If address have no valid AHB mapping, return 0
101 */
102 static u32 wmi_addr_remap(u32 x)
103 {
104 uint i;
105
106 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
107 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
108 return x + fw_mapping[i].host - fw_mapping[i].from;
109 }
110
111 return 0;
112 }
113
114 /**
115 * Check address validity for WMI buffer; remap if needed
116 * @ptr - internal (linker) fw/ucode address
117 *
118 * Valid buffer should be DWORD aligned
119 *
120 * return address for accessing buffer from the host;
121 * if buffer is not valid, return NULL.
122 */
123 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
124 {
125 u32 off;
126 u32 ptr = le32_to_cpu(ptr_);
127
128 if (ptr % 4)
129 return NULL;
130
131 ptr = wmi_addr_remap(ptr);
132 if (ptr < WIL6210_FW_HOST_OFF)
133 return NULL;
134
135 off = HOSTADDR(ptr);
136 if (off > WIL6210_MEM_SIZE - 4)
137 return NULL;
138
139 return wil->csr + off;
140 }
141
142 /**
143 * Check address validity
144 */
145 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
146 {
147 u32 off;
148
149 if (ptr % 4)
150 return NULL;
151
152 if (ptr < WIL6210_FW_HOST_OFF)
153 return NULL;
154
155 off = HOSTADDR(ptr);
156 if (off > WIL6210_MEM_SIZE - 4)
157 return NULL;
158
159 return wil->csr + off;
160 }
161
162 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
163 struct wil6210_mbox_hdr *hdr)
164 {
165 void __iomem *src = wmi_buffer(wil, ptr);
166
167 if (!src)
168 return -EINVAL;
169
170 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
171
172 return 0;
173 }
174
175 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
176 {
177 struct {
178 struct wil6210_mbox_hdr hdr;
179 struct wmi_cmd_hdr wmi;
180 } __packed cmd = {
181 .hdr = {
182 .type = WIL_MBOX_HDR_TYPE_WMI,
183 .flags = 0,
184 .len = cpu_to_le16(sizeof(cmd.wmi) + len),
185 },
186 .wmi = {
187 .mid = 0,
188 .command_id = cpu_to_le16(cmdid),
189 },
190 };
191 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
192 struct wil6210_mbox_ring_desc d_head;
193 u32 next_head;
194 void __iomem *dst;
195 void __iomem *head = wmi_addr(wil, r->head);
196 uint retry;
197
198 if (sizeof(cmd) + len > r->entry_size) {
199 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
200 (int)(sizeof(cmd) + len), r->entry_size);
201 return -ERANGE;
202 }
203
204 might_sleep();
205
206 if (!test_bit(wil_status_fwready, wil->status)) {
207 wil_err(wil, "WMI: cannot send command while FW not ready\n");
208 return -EAGAIN;
209 }
210
211 if (!head) {
212 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
213 return -EINVAL;
214 }
215 /* read Tx head till it is not busy */
216 for (retry = 5; retry > 0; retry--) {
217 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
218 if (d_head.sync == 0)
219 break;
220 msleep(20);
221 }
222 if (d_head.sync != 0) {
223 wil_err(wil, "WMI head busy\n");
224 return -EBUSY;
225 }
226 /* next head */
227 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
228 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
229 /* wait till FW finish with previous command */
230 for (retry = 5; retry > 0; retry--) {
231 if (!test_bit(wil_status_fwready, wil->status)) {
232 wil_err(wil, "WMI: cannot send command while FW not ready\n");
233 return -EAGAIN;
234 }
235 r->tail = wil_r(wil, RGF_MBOX +
236 offsetof(struct wil6210_mbox_ctl, tx.tail));
237 if (next_head != r->tail)
238 break;
239 msleep(20);
240 }
241 if (next_head == r->tail) {
242 wil_err(wil, "WMI ring full\n");
243 return -EBUSY;
244 }
245 dst = wmi_buffer(wil, d_head.addr);
246 if (!dst) {
247 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
248 le32_to_cpu(d_head.addr));
249 return -EINVAL;
250 }
251 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
252 /* set command */
253 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
254 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
255 sizeof(cmd), true);
256 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
257 len, true);
258 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
259 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
260 /* mark entry as full */
261 wil_w(wil, r->head + offsetof(struct wil6210_mbox_ring_desc, sync), 1);
262 /* advance next ptr */
263 wil_w(wil, RGF_MBOX + offsetof(struct wil6210_mbox_ctl, tx.head),
264 r->head = next_head);
265
266 trace_wil6210_wmi_cmd(&cmd.wmi, buf, len);
267
268 /* interrupt to FW */
269 wil_w(wil, RGF_USER_USER_ICR + offsetof(struct RGF_ICR, ICS),
270 SW_INT_MBOX);
271
272 return 0;
273 }
274
275 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
276 {
277 int rc;
278
279 mutex_lock(&wil->wmi_mutex);
280 rc = __wmi_send(wil, cmdid, buf, len);
281 mutex_unlock(&wil->wmi_mutex);
282
283 return rc;
284 }
285
286 /*=== Event handlers ===*/
287 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
288 {
289 struct wireless_dev *wdev = wil->wdev;
290 struct wmi_ready_event *evt = d;
291
292 wil->fw_version = le32_to_cpu(evt->sw_version);
293 wil->n_mids = evt->numof_additional_mids;
294
295 wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
296 evt->mac, wil->n_mids);
297 /* ignore MAC address, we already have it from the boot loader */
298 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
299 "%d", wil->fw_version);
300
301 wil_set_recovery_state(wil, fw_recovery_idle);
302 set_bit(wil_status_fwready, wil->status);
303 /* let the reset sequence continue */
304 complete(&wil->wmi_ready);
305 }
306
307 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
308 {
309 struct wmi_rx_mgmt_packet_event *data = d;
310 struct wiphy *wiphy = wil_to_wiphy(wil);
311 struct ieee80211_mgmt *rx_mgmt_frame =
312 (struct ieee80211_mgmt *)data->payload;
313 int flen = len - offsetof(struct wmi_rx_mgmt_packet_event, payload);
314 int ch_no;
315 u32 freq;
316 struct ieee80211_channel *channel;
317 s32 signal;
318 __le16 fc;
319 u32 d_len;
320 u16 d_status;
321
322 if (flen < 0) {
323 wil_err(wil, "MGMT Rx: short event, len %d\n", len);
324 return;
325 }
326
327 d_len = le32_to_cpu(data->info.len);
328 if (d_len != flen) {
329 wil_err(wil,
330 "MGMT Rx: length mismatch, d_len %d should be %d\n",
331 d_len, flen);
332 return;
333 }
334
335 ch_no = data->info.channel + 1;
336 freq = ieee80211_channel_to_frequency(ch_no, NL80211_BAND_60GHZ);
337 channel = ieee80211_get_channel(wiphy, freq);
338 signal = data->info.sqi;
339 d_status = le16_to_cpu(data->info.status);
340 fc = rx_mgmt_frame->frame_control;
341
342 wil_dbg_wmi(wil, "MGMT Rx: channel %d MCS %d SNR %d SQI %d%%\n",
343 data->info.channel, data->info.mcs, data->info.snr,
344 data->info.sqi);
345 wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
346 le16_to_cpu(fc));
347 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
348 data->info.qid, data->info.mid, data->info.cid);
349 wil_hex_dump_wmi("MGMT Rx ", DUMP_PREFIX_OFFSET, 16, 1, rx_mgmt_frame,
350 d_len, true);
351
352 if (!channel) {
353 wil_err(wil, "Frame on unsupported channel\n");
354 return;
355 }
356
357 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
358 struct cfg80211_bss *bss;
359 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
360 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
361 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
362 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
363 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
364 u.beacon.variable);
365 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
366 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
367 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
368 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
369 ie_len, true);
370
371 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
372
373 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
374 d_len, signal, GFP_KERNEL);
375 if (bss) {
376 wil_dbg_wmi(wil, "Added BSS %pM\n",
377 rx_mgmt_frame->bssid);
378 cfg80211_put_bss(wiphy, bss);
379 } else {
380 wil_err(wil, "cfg80211_inform_bss_frame() failed\n");
381 }
382 } else {
383 mutex_lock(&wil->p2p_wdev_mutex);
384 cfg80211_rx_mgmt(wil->radio_wdev, freq, signal,
385 (void *)rx_mgmt_frame, d_len, 0);
386 mutex_unlock(&wil->p2p_wdev_mutex);
387 }
388 }
389
390 static void wmi_evt_tx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
391 {
392 struct wmi_tx_mgmt_packet_event *data = d;
393 struct ieee80211_mgmt *mgmt_frame =
394 (struct ieee80211_mgmt *)data->payload;
395 int flen = len - offsetof(struct wmi_tx_mgmt_packet_event, payload);
396
397 wil_hex_dump_wmi("MGMT Tx ", DUMP_PREFIX_OFFSET, 16, 1, mgmt_frame,
398 flen, true);
399 }
400
401 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
402 void *d, int len)
403 {
404 if (wil->scan_request) {
405 struct wmi_scan_complete_event *data = d;
406 bool aborted = (data->status != WMI_SCAN_SUCCESS);
407
408 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
409 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
410 wil->scan_request, aborted);
411
412 del_timer_sync(&wil->scan_timer);
413 mutex_lock(&wil->p2p_wdev_mutex);
414 cfg80211_scan_done(wil->scan_request, aborted);
415 wil->radio_wdev = wil->wdev;
416 mutex_unlock(&wil->p2p_wdev_mutex);
417 wil->scan_request = NULL;
418 } else {
419 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
420 }
421 }
422
423 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
424 {
425 struct net_device *ndev = wil_to_ndev(wil);
426 struct wireless_dev *wdev = wil->wdev;
427 struct wmi_connect_event *evt = d;
428 int ch; /* channel number */
429 struct station_info sinfo;
430 u8 *assoc_req_ie, *assoc_resp_ie;
431 size_t assoc_req_ielen, assoc_resp_ielen;
432 /* capinfo(u16) + listen_interval(u16) + IEs */
433 const size_t assoc_req_ie_offset = sizeof(u16) * 2;
434 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
435 const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
436 int rc;
437
438 if (len < sizeof(*evt)) {
439 wil_err(wil, "Connect event too short : %d bytes\n", len);
440 return;
441 }
442 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
443 evt->assoc_resp_len) {
444 wil_err(wil,
445 "Connect event corrupted : %d != %d + %d + %d + %d\n",
446 len, (int)sizeof(*evt), evt->beacon_ie_len,
447 evt->assoc_req_len, evt->assoc_resp_len);
448 return;
449 }
450 if (evt->cid >= WIL6210_MAX_CID) {
451 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
452 return;
453 }
454
455 ch = evt->channel + 1;
456 wil_info(wil, "Connect %pM channel [%d] cid %d\n",
457 evt->bssid, ch, evt->cid);
458 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
459 evt->assoc_info, len - sizeof(*evt), true);
460
461 /* figure out IE's */
462 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
463 assoc_req_ie_offset];
464 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
465 if (evt->assoc_req_len <= assoc_req_ie_offset) {
466 assoc_req_ie = NULL;
467 assoc_req_ielen = 0;
468 }
469
470 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
471 evt->assoc_req_len +
472 assoc_resp_ie_offset];
473 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
474 if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
475 assoc_resp_ie = NULL;
476 assoc_resp_ielen = 0;
477 }
478
479 mutex_lock(&wil->mutex);
480 if (test_bit(wil_status_resetting, wil->status) ||
481 !test_bit(wil_status_fwready, wil->status)) {
482 wil_err(wil, "status_resetting, cancel connect event, CID %d\n",
483 evt->cid);
484 mutex_unlock(&wil->mutex);
485 /* no need for cleanup, wil_reset will do that */
486 return;
487 }
488
489 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
490 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
491 if (!test_bit(wil_status_fwconnecting, wil->status)) {
492 wil_err(wil, "Not in connecting state\n");
493 mutex_unlock(&wil->mutex);
494 return;
495 }
496 del_timer_sync(&wil->connect_timer);
497 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
498 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
499 if (wil->sta[evt->cid].status != wil_sta_unused) {
500 wil_err(wil, "%s: AP: Invalid status %d for CID %d\n",
501 __func__, wil->sta[evt->cid].status, evt->cid);
502 mutex_unlock(&wil->mutex);
503 return;
504 }
505 }
506
507 /* FIXME FW can transmit only ucast frames to peer */
508 /* FIXME real ring_id instead of hard coded 0 */
509 ether_addr_copy(wil->sta[evt->cid].addr, evt->bssid);
510 wil->sta[evt->cid].status = wil_sta_conn_pending;
511
512 rc = wil_tx_init(wil, evt->cid);
513 if (rc) {
514 wil_err(wil, "%s: config tx vring failed for CID %d, rc (%d)\n",
515 __func__, evt->cid, rc);
516 wmi_disconnect_sta(wil, wil->sta[evt->cid].addr,
517 WLAN_REASON_UNSPECIFIED, false);
518 } else {
519 wil_info(wil, "%s: successful connection to CID %d\n",
520 __func__, evt->cid);
521 }
522
523 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
524 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
525 if (rc) {
526 netif_tx_stop_all_queues(ndev);
527 netif_carrier_off(ndev);
528 wil_err(wil,
529 "%s: cfg80211_connect_result with failure\n",
530 __func__);
531 cfg80211_connect_result(ndev, evt->bssid, NULL, 0,
532 NULL, 0,
533 WLAN_STATUS_UNSPECIFIED_FAILURE,
534 GFP_KERNEL);
535 goto out;
536 } else {
537 cfg80211_connect_result(ndev, evt->bssid,
538 assoc_req_ie, assoc_req_ielen,
539 assoc_resp_ie, assoc_resp_ielen,
540 WLAN_STATUS_SUCCESS,
541 GFP_KERNEL);
542 }
543 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
544 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
545 if (rc)
546 goto out;
547
548 memset(&sinfo, 0, sizeof(sinfo));
549
550 sinfo.generation = wil->sinfo_gen++;
551
552 if (assoc_req_ie) {
553 sinfo.assoc_req_ies = assoc_req_ie;
554 sinfo.assoc_req_ies_len = assoc_req_ielen;
555 }
556
557 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
558 } else {
559 wil_err(wil, "%s: unhandled iftype %d for CID %d\n",
560 __func__, wdev->iftype, evt->cid);
561 goto out;
562 }
563
564 wil->sta[evt->cid].status = wil_sta_connected;
565 set_bit(wil_status_fwconnected, wil->status);
566 netif_tx_wake_all_queues(ndev);
567
568 out:
569 if (rc)
570 wil->sta[evt->cid].status = wil_sta_unused;
571 clear_bit(wil_status_fwconnecting, wil->status);
572 mutex_unlock(&wil->mutex);
573 }
574
575 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
576 void *d, int len)
577 {
578 struct wmi_disconnect_event *evt = d;
579 u16 reason_code = le16_to_cpu(evt->protocol_reason_status);
580
581 wil_info(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
582 evt->bssid, reason_code, evt->disconnect_reason);
583
584 wil->sinfo_gen++;
585
586 mutex_lock(&wil->mutex);
587 wil6210_disconnect(wil, evt->bssid, reason_code, true);
588 mutex_unlock(&wil->mutex);
589 }
590
591 /*
592 * Firmware reports EAPOL frame using WME event.
593 * Reconstruct Ethernet frame and deliver it via normal Rx
594 */
595 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
596 void *d, int len)
597 {
598 struct net_device *ndev = wil_to_ndev(wil);
599 struct wmi_eapol_rx_event *evt = d;
600 u16 eapol_len = le16_to_cpu(evt->eapol_len);
601 int sz = eapol_len + ETH_HLEN;
602 struct sk_buff *skb;
603 struct ethhdr *eth;
604 int cid;
605 struct wil_net_stats *stats = NULL;
606
607 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
608 evt->src_mac);
609
610 cid = wil_find_cid(wil, evt->src_mac);
611 if (cid >= 0)
612 stats = &wil->sta[cid].stats;
613
614 if (eapol_len > 196) { /* TODO: revisit size limit */
615 wil_err(wil, "EAPOL too large\n");
616 return;
617 }
618
619 skb = alloc_skb(sz, GFP_KERNEL);
620 if (!skb) {
621 wil_err(wil, "Failed to allocate skb\n");
622 return;
623 }
624
625 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
626 ether_addr_copy(eth->h_dest, ndev->dev_addr);
627 ether_addr_copy(eth->h_source, evt->src_mac);
628 eth->h_proto = cpu_to_be16(ETH_P_PAE);
629 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
630 skb->protocol = eth_type_trans(skb, ndev);
631 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
632 ndev->stats.rx_packets++;
633 ndev->stats.rx_bytes += sz;
634 if (stats) {
635 stats->rx_packets++;
636 stats->rx_bytes += sz;
637 }
638 } else {
639 ndev->stats.rx_dropped++;
640 if (stats)
641 stats->rx_dropped++;
642 }
643 }
644
645 static void wmi_evt_vring_en(struct wil6210_priv *wil, int id, void *d, int len)
646 {
647 struct wmi_vring_en_event *evt = d;
648 u8 vri = evt->vring_index;
649
650 wil_dbg_wmi(wil, "Enable vring %d\n", vri);
651
652 if (vri >= ARRAY_SIZE(wil->vring_tx)) {
653 wil_err(wil, "Enable for invalid vring %d\n", vri);
654 return;
655 }
656 wil->vring_tx_data[vri].dot1x_open = true;
657 if (vri == wil->bcast_vring) /* no BA for bcast */
658 return;
659 if (agg_wsize >= 0)
660 wil_addba_tx_request(wil, vri, agg_wsize);
661 }
662
663 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
664 int len)
665 {
666 struct wmi_ba_status_event *evt = d;
667 struct vring_tx_data *txdata;
668
669 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d AMSDU%s\n",
670 evt->ringid,
671 evt->status == WMI_BA_AGREED ? "OK" : "N/A",
672 evt->agg_wsize, __le16_to_cpu(evt->ba_timeout),
673 evt->amsdu ? "+" : "-");
674
675 if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
676 wil_err(wil, "invalid ring id %d\n", evt->ringid);
677 return;
678 }
679
680 if (evt->status != WMI_BA_AGREED) {
681 evt->ba_timeout = 0;
682 evt->agg_wsize = 0;
683 evt->amsdu = 0;
684 }
685
686 txdata = &wil->vring_tx_data[evt->ringid];
687
688 txdata->agg_timeout = le16_to_cpu(evt->ba_timeout);
689 txdata->agg_wsize = evt->agg_wsize;
690 txdata->agg_amsdu = evt->amsdu;
691 txdata->addba_in_progress = false;
692 }
693
694 static void wmi_evt_addba_rx_req(struct wil6210_priv *wil, int id, void *d,
695 int len)
696 {
697 struct wmi_rcp_addba_req_event *evt = d;
698
699 wil_addba_rx_request(wil, evt->cidxtid, evt->dialog_token,
700 evt->ba_param_set, evt->ba_timeout,
701 evt->ba_seq_ctrl);
702 }
703
704 static void wmi_evt_delba(struct wil6210_priv *wil, int id, void *d, int len)
705 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
706 {
707 struct wmi_delba_event *evt = d;
708 u8 cid, tid;
709 u16 reason = __le16_to_cpu(evt->reason);
710 struct wil_sta_info *sta;
711 struct wil_tid_ampdu_rx *r;
712
713 might_sleep();
714 parse_cidxtid(evt->cidxtid, &cid, &tid);
715 wil_dbg_wmi(wil, "DELBA CID %d TID %d from %s reason %d\n",
716 cid, tid,
717 evt->from_initiator ? "originator" : "recipient",
718 reason);
719 if (!evt->from_initiator) {
720 int i;
721 /* find Tx vring it belongs to */
722 for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) {
723 if ((wil->vring2cid_tid[i][0] == cid) &&
724 (wil->vring2cid_tid[i][1] == tid)) {
725 struct vring_tx_data *txdata =
726 &wil->vring_tx_data[i];
727
728 wil_dbg_wmi(wil, "DELBA Tx vring %d\n", i);
729 txdata->agg_timeout = 0;
730 txdata->agg_wsize = 0;
731 txdata->addba_in_progress = false;
732
733 break; /* max. 1 matching ring */
734 }
735 }
736 if (i >= ARRAY_SIZE(wil->vring2cid_tid))
737 wil_err(wil, "DELBA: unable to find Tx vring\n");
738 return;
739 }
740
741 sta = &wil->sta[cid];
742
743 spin_lock_bh(&sta->tid_rx_lock);
744
745 r = sta->tid_rx[tid];
746 sta->tid_rx[tid] = NULL;
747 wil_tid_ampdu_rx_free(wil, r);
748
749 spin_unlock_bh(&sta->tid_rx_lock);
750 }
751
752 /**
753 * Some events are ignored for purpose; and need not be interpreted as
754 * "unhandled events"
755 */
756 static void wmi_evt_ignore(struct wil6210_priv *wil, int id, void *d, int len)
757 {
758 wil_dbg_wmi(wil, "Ignore event 0x%04x len %d\n", id, len);
759 }
760
761 static const struct {
762 int eventid;
763 void (*handler)(struct wil6210_priv *wil, int eventid,
764 void *data, int data_len);
765 } wmi_evt_handlers[] = {
766 {WMI_READY_EVENTID, wmi_evt_ready},
767 {WMI_FW_READY_EVENTID, wmi_evt_ignore},
768 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt},
769 {WMI_TX_MGMT_PACKET_EVENTID, wmi_evt_tx_mgmt},
770 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete},
771 {WMI_CONNECT_EVENTID, wmi_evt_connect},
772 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect},
773 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
774 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status},
775 {WMI_RCP_ADDBA_REQ_EVENTID, wmi_evt_addba_rx_req},
776 {WMI_DELBA_EVENTID, wmi_evt_delba},
777 {WMI_VRING_EN_EVENTID, wmi_evt_vring_en},
778 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_ignore},
779 };
780
781 /*
782 * Run in IRQ context
783 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
784 * that will be eventually handled by the @wmi_event_worker in the thread
785 * context of thread "wil6210_wmi"
786 */
787 void wmi_recv_cmd(struct wil6210_priv *wil)
788 {
789 struct wil6210_mbox_ring_desc d_tail;
790 struct wil6210_mbox_hdr hdr;
791 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
792 struct pending_wmi_event *evt;
793 u8 *cmd;
794 void __iomem *src;
795 ulong flags;
796 unsigned n;
797 unsigned int num_immed_reply = 0;
798
799 if (!test_bit(wil_status_mbox_ready, wil->status)) {
800 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
801 return;
802 }
803
804 for (n = 0;; n++) {
805 u16 len;
806 bool q;
807 bool immed_reply = false;
808
809 r->head = wil_r(wil, RGF_MBOX +
810 offsetof(struct wil6210_mbox_ctl, rx.head));
811 if (r->tail == r->head)
812 break;
813
814 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
815 r->head, r->tail);
816 /* read cmd descriptor from tail */
817 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
818 sizeof(struct wil6210_mbox_ring_desc));
819 if (d_tail.sync == 0) {
820 wil_err(wil, "Mbox evt not owned by FW?\n");
821 break;
822 }
823
824 /* read cmd header from descriptor */
825 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
826 wil_err(wil, "Mbox evt at 0x%08x?\n",
827 le32_to_cpu(d_tail.addr));
828 break;
829 }
830 len = le16_to_cpu(hdr.len);
831 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
832 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
833 hdr.flags);
834
835 /* read cmd buffer from descriptor */
836 src = wmi_buffer(wil, d_tail.addr) +
837 sizeof(struct wil6210_mbox_hdr);
838 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
839 event.wmi) + len, 4),
840 GFP_KERNEL);
841 if (!evt)
842 break;
843
844 evt->event.hdr = hdr;
845 cmd = (void *)&evt->event.wmi;
846 wil_memcpy_fromio_32(cmd, src, len);
847 /* mark entry as empty */
848 wil_w(wil, r->tail +
849 offsetof(struct wil6210_mbox_ring_desc, sync), 0);
850 /* indicate */
851 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
852 (len >= sizeof(struct wmi_cmd_hdr))) {
853 struct wmi_cmd_hdr *wmi = &evt->event.wmi;
854 u16 id = le16_to_cpu(wmi->command_id);
855 u32 tstamp = le32_to_cpu(wmi->fw_timestamp);
856 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
857 if (wil->reply_id && wil->reply_id == id) {
858 if (wil->reply_buf) {
859 memcpy(wil->reply_buf, wmi,
860 min(len, wil->reply_size));
861 immed_reply = true;
862 }
863 }
864 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
865
866 wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
867 id, wmi->mid, tstamp);
868 trace_wil6210_wmi_event(wmi, &wmi[1],
869 len - sizeof(*wmi));
870 }
871 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
872 &evt->event.hdr, sizeof(hdr) + len, true);
873
874 /* advance tail */
875 r->tail = r->base + ((r->tail - r->base +
876 sizeof(struct wil6210_mbox_ring_desc)) % r->size);
877 wil_w(wil, RGF_MBOX +
878 offsetof(struct wil6210_mbox_ctl, rx.tail), r->tail);
879
880 if (immed_reply) {
881 wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
882 __func__, wil->reply_id);
883 kfree(evt);
884 num_immed_reply++;
885 complete(&wil->wmi_call);
886 } else {
887 /* add to the pending list */
888 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
889 list_add_tail(&evt->list, &wil->pending_wmi_ev);
890 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
891 q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
892 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
893 }
894 }
895 /* normally, 1 event per IRQ should be processed */
896 wil_dbg_wmi(wil, "%s -> %d events queued, %d completed\n", __func__,
897 n - num_immed_reply, num_immed_reply);
898 }
899
900 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
901 u16 reply_id, void *reply, u8 reply_size, int to_msec)
902 {
903 int rc;
904 unsigned long remain;
905
906 mutex_lock(&wil->wmi_mutex);
907
908 spin_lock(&wil->wmi_ev_lock);
909 wil->reply_id = reply_id;
910 wil->reply_buf = reply;
911 wil->reply_size = reply_size;
912 spin_unlock(&wil->wmi_ev_lock);
913
914 rc = __wmi_send(wil, cmdid, buf, len);
915 if (rc)
916 goto out;
917
918 remain = wait_for_completion_timeout(&wil->wmi_call,
919 msecs_to_jiffies(to_msec));
920 if (0 == remain) {
921 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
922 cmdid, reply_id, to_msec);
923 rc = -ETIME;
924 } else {
925 wil_dbg_wmi(wil,
926 "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
927 cmdid, reply_id,
928 to_msec - jiffies_to_msecs(remain));
929 }
930
931 out:
932 spin_lock(&wil->wmi_ev_lock);
933 wil->reply_id = 0;
934 wil->reply_buf = NULL;
935 wil->reply_size = 0;
936 spin_unlock(&wil->wmi_ev_lock);
937
938 mutex_unlock(&wil->wmi_mutex);
939
940 return rc;
941 }
942
943 int wmi_echo(struct wil6210_priv *wil)
944 {
945 struct wmi_echo_cmd cmd = {
946 .value = cpu_to_le32(0x12345678),
947 };
948
949 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
950 WMI_ECHO_RSP_EVENTID, NULL, 0, 50);
951 }
952
953 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
954 {
955 struct wmi_set_mac_address_cmd cmd;
956
957 ether_addr_copy(cmd.mac, addr);
958
959 wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
960
961 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
962 }
963
964 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype,
965 u8 chan, u8 hidden_ssid, u8 is_go)
966 {
967 int rc;
968
969 struct wmi_pcp_start_cmd cmd = {
970 .bcon_interval = cpu_to_le16(bi),
971 .network_type = wmi_nettype,
972 .disable_sec_offload = 1,
973 .channel = chan - 1,
974 .pcp_max_assoc_sta = max_assoc_sta,
975 .hidden_ssid = hidden_ssid,
976 .is_go = is_go,
977 };
978 struct {
979 struct wmi_cmd_hdr wmi;
980 struct wmi_pcp_started_event evt;
981 } __packed reply;
982
983 if (!wil->privacy)
984 cmd.disable_sec = 1;
985
986 if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
987 (cmd.pcp_max_assoc_sta <= 0)) {
988 wil_info(wil,
989 "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
990 max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
991 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
992 }
993
994 /*
995 * Processing time may be huge, in case of secure AP it takes about
996 * 3500ms for FW to start AP
997 */
998 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
999 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
1000 if (rc)
1001 return rc;
1002
1003 if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
1004 rc = -EINVAL;
1005
1006 return rc;
1007 }
1008
1009 int wmi_pcp_stop(struct wil6210_priv *wil)
1010 {
1011 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
1012 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
1013 }
1014
1015 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
1016 {
1017 struct wmi_set_ssid_cmd cmd = {
1018 .ssid_len = cpu_to_le32(ssid_len),
1019 };
1020
1021 if (ssid_len > sizeof(cmd.ssid))
1022 return -EINVAL;
1023
1024 memcpy(cmd.ssid, ssid, ssid_len);
1025
1026 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
1027 }
1028
1029 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
1030 {
1031 int rc;
1032 struct {
1033 struct wmi_cmd_hdr wmi;
1034 struct wmi_set_ssid_cmd cmd;
1035 } __packed reply;
1036 int len; /* reply.cmd.ssid_len in CPU order */
1037
1038 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
1039 &reply, sizeof(reply), 20);
1040 if (rc)
1041 return rc;
1042
1043 len = le32_to_cpu(reply.cmd.ssid_len);
1044 if (len > sizeof(reply.cmd.ssid))
1045 return -EINVAL;
1046
1047 *ssid_len = len;
1048 memcpy(ssid, reply.cmd.ssid, len);
1049
1050 return 0;
1051 }
1052
1053 int wmi_set_channel(struct wil6210_priv *wil, int channel)
1054 {
1055 struct wmi_set_pcp_channel_cmd cmd = {
1056 .channel = channel - 1,
1057 };
1058
1059 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
1060 }
1061
1062 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
1063 {
1064 int rc;
1065 struct {
1066 struct wmi_cmd_hdr wmi;
1067 struct wmi_set_pcp_channel_cmd cmd;
1068 } __packed reply;
1069
1070 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
1071 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
1072 if (rc)
1073 return rc;
1074
1075 if (reply.cmd.channel > 3)
1076 return -EINVAL;
1077
1078 *channel = reply.cmd.channel + 1;
1079
1080 return 0;
1081 }
1082
1083 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel, int bi)
1084 {
1085 int rc;
1086 struct wmi_p2p_cfg_cmd cmd = {
1087 .discovery_mode = WMI_DISCOVERY_MODE_PEER2PEER,
1088 .bcon_interval = cpu_to_le16(bi),
1089 .channel = channel - 1,
1090 };
1091 struct {
1092 struct wmi_cmd_hdr wmi;
1093 struct wmi_p2p_cfg_done_event evt;
1094 } __packed reply;
1095
1096 wil_dbg_wmi(wil, "sending WMI_P2P_CFG_CMDID\n");
1097
1098 rc = wmi_call(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd),
1099 WMI_P2P_CFG_DONE_EVENTID, &reply, sizeof(reply), 300);
1100 if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1101 wil_err(wil, "P2P_CFG failed. status %d\n", reply.evt.status);
1102 rc = -EINVAL;
1103 }
1104
1105 return rc;
1106 }
1107
1108 int wmi_start_listen(struct wil6210_priv *wil)
1109 {
1110 int rc;
1111 struct {
1112 struct wmi_cmd_hdr wmi;
1113 struct wmi_listen_started_event evt;
1114 } __packed reply;
1115
1116 wil_dbg_wmi(wil, "sending WMI_START_LISTEN_CMDID\n");
1117
1118 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1119 WMI_LISTEN_STARTED_EVENTID, &reply, sizeof(reply), 300);
1120 if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1121 wil_err(wil, "device failed to start listen. status %d\n",
1122 reply.evt.status);
1123 rc = -EINVAL;
1124 }
1125
1126 return rc;
1127 }
1128
1129 int wmi_start_search(struct wil6210_priv *wil)
1130 {
1131 int rc;
1132 struct {
1133 struct wmi_cmd_hdr wmi;
1134 struct wmi_search_started_event evt;
1135 } __packed reply;
1136
1137 wil_dbg_wmi(wil, "sending WMI_START_SEARCH_CMDID\n");
1138
1139 rc = wmi_call(wil, WMI_START_SEARCH_CMDID, NULL, 0,
1140 WMI_SEARCH_STARTED_EVENTID, &reply, sizeof(reply), 300);
1141 if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1142 wil_err(wil, "device failed to start search. status %d\n",
1143 reply.evt.status);
1144 rc = -EINVAL;
1145 }
1146
1147 return rc;
1148 }
1149
1150 int wmi_stop_discovery(struct wil6210_priv *wil)
1151 {
1152 int rc;
1153
1154 wil_dbg_wmi(wil, "sending WMI_DISCOVERY_STOP_CMDID\n");
1155
1156 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1157 WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 100);
1158
1159 if (rc)
1160 wil_err(wil, "Failed to stop discovery\n");
1161
1162 return rc;
1163 }
1164
1165 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
1166 const void *mac_addr, int key_usage)
1167 {
1168 struct wmi_delete_cipher_key_cmd cmd = {
1169 .key_index = key_index,
1170 };
1171
1172 if (mac_addr)
1173 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1174
1175 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1176 }
1177
1178 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
1179 const void *mac_addr, int key_len, const void *key,
1180 int key_usage)
1181 {
1182 struct wmi_add_cipher_key_cmd cmd = {
1183 .key_index = key_index,
1184 .key_usage = key_usage,
1185 .key_len = key_len,
1186 };
1187
1188 if (!key || (key_len > sizeof(cmd.key)))
1189 return -EINVAL;
1190
1191 memcpy(cmd.key, key, key_len);
1192 if (mac_addr)
1193 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1194
1195 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1196 }
1197
1198 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
1199 {
1200 static const char *const names[] = {
1201 [WMI_FRAME_BEACON] = "BEACON",
1202 [WMI_FRAME_PROBE_REQ] = "PROBE_REQ",
1203 [WMI_FRAME_PROBE_RESP] = "WMI_FRAME_PROBE_RESP",
1204 [WMI_FRAME_ASSOC_REQ] = "WMI_FRAME_ASSOC_REQ",
1205 [WMI_FRAME_ASSOC_RESP] = "WMI_FRAME_ASSOC_RESP",
1206 };
1207 int rc;
1208 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
1209 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
1210
1211 if (!cmd) {
1212 rc = -ENOMEM;
1213 goto out;
1214 }
1215 if (!ie)
1216 ie_len = 0;
1217
1218 cmd->mgmt_frm_type = type;
1219 /* BUG: FW API define ieLen as u8. Will fix FW */
1220 cmd->ie_len = cpu_to_le16(ie_len);
1221 memcpy(cmd->ie_info, ie, ie_len);
1222 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
1223 kfree(cmd);
1224 out:
1225 if (rc) {
1226 const char *name = type < ARRAY_SIZE(names) ?
1227 names[type] : "??";
1228 wil_err(wil, "set_ie(%d %s) failed : %d\n", type, name, rc);
1229 }
1230
1231 return rc;
1232 }
1233
1234 /**
1235 * wmi_rxon - turn radio on/off
1236 * @on: turn on if true, off otherwise
1237 *
1238 * Only switch radio. Channel should be set separately.
1239 * No timeout for rxon - radio turned on forever unless some other call
1240 * turns it off
1241 */
1242 int wmi_rxon(struct wil6210_priv *wil, bool on)
1243 {
1244 int rc;
1245 struct {
1246 struct wmi_cmd_hdr wmi;
1247 struct wmi_listen_started_event evt;
1248 } __packed reply;
1249
1250 wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1251
1252 if (on) {
1253 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1254 WMI_LISTEN_STARTED_EVENTID,
1255 &reply, sizeof(reply), 100);
1256 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1257 rc = -EINVAL;
1258 } else {
1259 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1260 WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1261 }
1262
1263 return rc;
1264 }
1265
1266 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1267 {
1268 struct wireless_dev *wdev = wil->wdev;
1269 struct net_device *ndev = wil_to_ndev(wil);
1270 struct wmi_cfg_rx_chain_cmd cmd = {
1271 .action = WMI_RX_CHAIN_ADD,
1272 .rx_sw_ring = {
1273 .max_mpdu_size = cpu_to_le16(wil_mtu2macbuf(mtu_max)),
1274 .ring_mem_base = cpu_to_le64(vring->pa),
1275 .ring_size = cpu_to_le16(vring->size),
1276 },
1277 .mid = 0, /* TODO - what is it? */
1278 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1279 .reorder_type = WMI_RX_SW_REORDER,
1280 .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh),
1281 };
1282 struct {
1283 struct wmi_cmd_hdr wmi;
1284 struct wmi_cfg_rx_chain_done_event evt;
1285 } __packed evt;
1286 int rc;
1287
1288 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1289 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1290
1291 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1292 if (ch)
1293 cmd.sniffer_cfg.channel = ch->hw_value - 1;
1294 cmd.sniffer_cfg.phy_info_mode =
1295 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1296 cmd.sniffer_cfg.phy_support =
1297 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1298 ? WMI_SNIFFER_CP : WMI_SNIFFER_BOTH_PHYS);
1299 } else {
1300 /* Initialize offload (in non-sniffer mode).
1301 * Linux IP stack always calculates IP checksum
1302 * HW always calculate TCP/UDP checksum
1303 */
1304 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1305 }
1306
1307 if (rx_align_2)
1308 cmd.l2_802_3_offload_ctrl |=
1309 L2_802_3_OFFLOAD_CTRL_SNAP_KEEP_MSK;
1310
1311 /* typical time for secure PCP is 840ms */
1312 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1313 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1314 if (rc)
1315 return rc;
1316
1317 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1318
1319 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1320 le32_to_cpu(evt.evt.status), vring->hwtail);
1321
1322 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1323 rc = -EINVAL;
1324
1325 return rc;
1326 }
1327
1328 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf)
1329 {
1330 int rc;
1331 struct wmi_temp_sense_cmd cmd = {
1332 .measure_baseband_en = cpu_to_le32(!!t_bb),
1333 .measure_rf_en = cpu_to_le32(!!t_rf),
1334 .measure_mode = cpu_to_le32(TEMPERATURE_MEASURE_NOW),
1335 };
1336 struct {
1337 struct wmi_cmd_hdr wmi;
1338 struct wmi_temp_sense_done_event evt;
1339 } __packed reply;
1340
1341 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1342 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1343 if (rc)
1344 return rc;
1345
1346 if (t_bb)
1347 *t_bb = le32_to_cpu(reply.evt.baseband_t1000);
1348 if (t_rf)
1349 *t_rf = le32_to_cpu(reply.evt.rf_t1000);
1350
1351 return 0;
1352 }
1353
1354 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason,
1355 bool full_disconnect)
1356 {
1357 int rc;
1358 u16 reason_code;
1359 struct wmi_disconnect_sta_cmd cmd = {
1360 .disconnect_reason = cpu_to_le16(reason),
1361 };
1362 struct {
1363 struct wmi_cmd_hdr wmi;
1364 struct wmi_disconnect_event evt;
1365 } __packed reply;
1366
1367 ether_addr_copy(cmd.dst_mac, mac);
1368
1369 wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1370
1371 rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd),
1372 WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 1000);
1373 /* failure to disconnect in reasonable time treated as FW error */
1374 if (rc) {
1375 wil_fw_error_recovery(wil);
1376 return rc;
1377 }
1378
1379 if (full_disconnect) {
1380 /* call event handler manually after processing wmi_call,
1381 * to avoid deadlock - disconnect event handler acquires
1382 * wil->mutex while it is already held here
1383 */
1384 reason_code = le16_to_cpu(reply.evt.protocol_reason_status);
1385
1386 wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
1387 reply.evt.bssid, reason_code,
1388 reply.evt.disconnect_reason);
1389
1390 wil->sinfo_gen++;
1391 wil6210_disconnect(wil, reply.evt.bssid, reason_code, true);
1392 }
1393 return 0;
1394 }
1395
1396 int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout)
1397 {
1398 struct wmi_vring_ba_en_cmd cmd = {
1399 .ringid = ringid,
1400 .agg_max_wsize = size,
1401 .ba_timeout = cpu_to_le16(timeout),
1402 .amsdu = 0,
1403 };
1404
1405 wil_dbg_wmi(wil, "%s(ring %d size %d timeout %d)\n", __func__,
1406 ringid, size, timeout);
1407
1408 return wmi_send(wil, WMI_VRING_BA_EN_CMDID, &cmd, sizeof(cmd));
1409 }
1410
1411 int wmi_delba_tx(struct wil6210_priv *wil, u8 ringid, u16 reason)
1412 {
1413 struct wmi_vring_ba_dis_cmd cmd = {
1414 .ringid = ringid,
1415 .reason = cpu_to_le16(reason),
1416 };
1417
1418 wil_dbg_wmi(wil, "%s(ring %d reason %d)\n", __func__,
1419 ringid, reason);
1420
1421 return wmi_send(wil, WMI_VRING_BA_DIS_CMDID, &cmd, sizeof(cmd));
1422 }
1423
1424 int wmi_delba_rx(struct wil6210_priv *wil, u8 cidxtid, u16 reason)
1425 {
1426 struct wmi_rcp_delba_cmd cmd = {
1427 .cidxtid = cidxtid,
1428 .reason = cpu_to_le16(reason),
1429 };
1430
1431 wil_dbg_wmi(wil, "%s(CID %d TID %d reason %d)\n", __func__,
1432 cidxtid & 0xf, (cidxtid >> 4) & 0xf, reason);
1433
1434 return wmi_send(wil, WMI_RCP_DELBA_CMDID, &cmd, sizeof(cmd));
1435 }
1436
1437 int wmi_addba_rx_resp(struct wil6210_priv *wil, u8 cid, u8 tid, u8 token,
1438 u16 status, bool amsdu, u16 agg_wsize, u16 timeout)
1439 {
1440 int rc;
1441 struct wmi_rcp_addba_resp_cmd cmd = {
1442 .cidxtid = mk_cidxtid(cid, tid),
1443 .dialog_token = token,
1444 .status_code = cpu_to_le16(status),
1445 /* bit 0: A-MSDU supported
1446 * bit 1: policy (should be 0 for us)
1447 * bits 2..5: TID
1448 * bits 6..15: buffer size
1449 */
1450 .ba_param_set = cpu_to_le16((amsdu ? 1 : 0) | (tid << 2) |
1451 (agg_wsize << 6)),
1452 .ba_timeout = cpu_to_le16(timeout),
1453 };
1454 struct {
1455 struct wmi_cmd_hdr wmi;
1456 struct wmi_rcp_addba_resp_sent_event evt;
1457 } __packed reply;
1458
1459 wil_dbg_wmi(wil,
1460 "ADDBA response for CID %d TID %d size %d timeout %d status %d AMSDU%s\n",
1461 cid, tid, agg_wsize, timeout, status, amsdu ? "+" : "-");
1462
1463 rc = wmi_call(wil, WMI_RCP_ADDBA_RESP_CMDID, &cmd, sizeof(cmd),
1464 WMI_RCP_ADDBA_RESP_SENT_EVENTID, &reply, sizeof(reply),
1465 100);
1466 if (rc)
1467 return rc;
1468
1469 if (reply.evt.status) {
1470 wil_err(wil, "ADDBA response failed with status %d\n",
1471 le16_to_cpu(reply.evt.status));
1472 rc = -EINVAL;
1473 }
1474
1475 return rc;
1476 }
1477
1478 void wmi_event_flush(struct wil6210_priv *wil)
1479 {
1480 struct pending_wmi_event *evt, *t;
1481
1482 wil_dbg_wmi(wil, "%s()\n", __func__);
1483
1484 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1485 list_del(&evt->list);
1486 kfree(evt);
1487 }
1488 }
1489
1490 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1491 void *d, int len)
1492 {
1493 uint i;
1494
1495 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1496 if (wmi_evt_handlers[i].eventid == id) {
1497 wmi_evt_handlers[i].handler(wil, id, d, len);
1498 return true;
1499 }
1500 }
1501
1502 return false;
1503 }
1504
1505 static void wmi_event_handle(struct wil6210_priv *wil,
1506 struct wil6210_mbox_hdr *hdr)
1507 {
1508 u16 len = le16_to_cpu(hdr->len);
1509
1510 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1511 (len >= sizeof(struct wmi_cmd_hdr))) {
1512 struct wmi_cmd_hdr *wmi = (void *)(&hdr[1]);
1513 void *evt_data = (void *)(&wmi[1]);
1514 u16 id = le16_to_cpu(wmi->command_id);
1515
1516 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1517 id, wil->reply_id);
1518 /* check if someone waits for this event */
1519 if (wil->reply_id && wil->reply_id == id) {
1520 WARN_ON(wil->reply_buf);
1521 wmi_evt_call_handler(wil, id, evt_data,
1522 len - sizeof(*wmi));
1523 wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
1524 __func__, id);
1525 complete(&wil->wmi_call);
1526 return;
1527 }
1528 /* unsolicited event */
1529 /* search for handler */
1530 if (!wmi_evt_call_handler(wil, id, evt_data,
1531 len - sizeof(*wmi))) {
1532 wil_info(wil, "Unhandled event 0x%04x\n", id);
1533 }
1534 } else {
1535 wil_err(wil, "Unknown event type\n");
1536 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1537 hdr, sizeof(*hdr) + len, true);
1538 }
1539 }
1540
1541 /*
1542 * Retrieve next WMI event from the pending list
1543 */
1544 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1545 {
1546 ulong flags;
1547 struct list_head *ret = NULL;
1548
1549 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1550
1551 if (!list_empty(&wil->pending_wmi_ev)) {
1552 ret = wil->pending_wmi_ev.next;
1553 list_del(ret);
1554 }
1555
1556 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1557
1558 return ret;
1559 }
1560
1561 /*
1562 * Handler for the WMI events
1563 */
1564 void wmi_event_worker(struct work_struct *work)
1565 {
1566 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1567 wmi_event_worker);
1568 struct pending_wmi_event *evt;
1569 struct list_head *lh;
1570
1571 wil_dbg_wmi(wil, "Start %s\n", __func__);
1572 while ((lh = next_wmi_ev(wil)) != NULL) {
1573 evt = list_entry(lh, struct pending_wmi_event, list);
1574 wmi_event_handle(wil, &evt->event.hdr);
1575 kfree(evt);
1576 }
1577 wil_dbg_wmi(wil, "Finished %s\n", __func__);
1578 }
Linux kernel - Deliverables
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