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[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / wmi.c
1 /*
2 * Copyright (c) 2012 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/etherdevice.h>
18 #include <linux/if_arp.h>
19
20 #include "wil6210.h"
21 #include "txrx.h"
22 #include "wmi.h"
23 #include "trace.h"
24
25 /**
26 * WMI event receiving - theory of operations
27 *
28 * When firmware about to report WMI event, it fills memory area
29 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
30 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
31 *
32 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the
33 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
34 * and handles events within the @wmi_event_worker. Every event get detached
35 * from list, processed and deleted.
36 *
37 * Purpose for this mechanism is to release IRQ thread; otherwise,
38 * if WMI event handling involves another WMI command flow, this 2-nd flow
39 * won't be completed because of blocked IRQ thread.
40 */
41
42 /**
43 * Addressing - theory of operations
44 *
45 * There are several buses present on the WIL6210 card.
46 * Same memory areas are visible at different address on
47 * the different busses. There are 3 main bus masters:
48 * - MAC CPU (ucode)
49 * - User CPU (firmware)
50 * - AHB (host)
51 *
52 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
53 * AHB addresses starting from 0x880000
54 *
55 * Internally, firmware uses addresses that allows faster access but
56 * are invisible from the host. To read from these addresses, alternative
57 * AHB address must be used.
58 *
59 * Memory mapping
60 * Linker address PCI/Host address
61 * 0x880000 .. 0xa80000 2Mb BAR0
62 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM
63 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH
64 */
65
66 /**
67 * @fw_mapping provides memory remapping table
68 */
69 static const struct {
70 u32 from; /* linker address - from, inclusive */
71 u32 to; /* linker address - to, exclusive */
72 u32 host; /* PCI/Host address - BAR0 + 0x880000 */
73 } fw_mapping[] = {
74 {0x000000, 0x040000, 0x8c0000}, /* FW code RAM 256k */
75 {0x800000, 0x808000, 0x900000}, /* FW data RAM 32k */
76 {0x840000, 0x860000, 0x908000}, /* peripheral data RAM 128k/96k used */
77 {0x880000, 0x88a000, 0x880000}, /* various RGF */
78 {0x8c0000, 0x949000, 0x8c0000}, /* trivial mapping for upper area */
79 /*
80 * 920000..930000 ucode code RAM
81 * 930000..932000 ucode data RAM
82 * 932000..949000 back-door debug data
83 */
84 };
85
86 /**
87 * return AHB address for given firmware/ucode internal (linker) address
88 * @x - internal address
89 * If address have no valid AHB mapping, return 0
90 */
91 static u32 wmi_addr_remap(u32 x)
92 {
93 uint i;
94
95 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
96 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
97 return x + fw_mapping[i].host - fw_mapping[i].from;
98 }
99
100 return 0;
101 }
102
103 /**
104 * Check address validity for WMI buffer; remap if needed
105 * @ptr - internal (linker) fw/ucode address
106 *
107 * Valid buffer should be DWORD aligned
108 *
109 * return address for accessing buffer from the host;
110 * if buffer is not valid, return NULL.
111 */
112 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
113 {
114 u32 off;
115 u32 ptr = le32_to_cpu(ptr_);
116
117 if (ptr % 4)
118 return NULL;
119
120 ptr = wmi_addr_remap(ptr);
121 if (ptr < WIL6210_FW_HOST_OFF)
122 return NULL;
123
124 off = HOSTADDR(ptr);
125 if (off > WIL6210_MEM_SIZE - 4)
126 return NULL;
127
128 return wil->csr + off;
129 }
130
131 /**
132 * Check address validity
133 */
134 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
135 {
136 u32 off;
137
138 if (ptr % 4)
139 return NULL;
140
141 if (ptr < WIL6210_FW_HOST_OFF)
142 return NULL;
143
144 off = HOSTADDR(ptr);
145 if (off > WIL6210_MEM_SIZE - 4)
146 return NULL;
147
148 return wil->csr + off;
149 }
150
151 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
152 struct wil6210_mbox_hdr *hdr)
153 {
154 void __iomem *src = wmi_buffer(wil, ptr);
155 if (!src)
156 return -EINVAL;
157
158 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
159
160 return 0;
161 }
162
163 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
164 {
165 struct {
166 struct wil6210_mbox_hdr hdr;
167 struct wil6210_mbox_hdr_wmi wmi;
168 } __packed cmd = {
169 .hdr = {
170 .type = WIL_MBOX_HDR_TYPE_WMI,
171 .flags = 0,
172 .len = cpu_to_le16(sizeof(cmd.wmi) + len),
173 },
174 .wmi = {
175 .id = cpu_to_le16(cmdid),
176 .info1 = 0,
177 },
178 };
179 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
180 struct wil6210_mbox_ring_desc d_head;
181 u32 next_head;
182 void __iomem *dst;
183 void __iomem *head = wmi_addr(wil, r->head);
184 uint retry;
185
186 if (sizeof(cmd) + len > r->entry_size) {
187 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
188 (int)(sizeof(cmd) + len), r->entry_size);
189 return -ERANGE;
190 }
191
192 might_sleep();
193
194 if (!test_bit(wil_status_fwready, &wil->status)) {
195 wil_err(wil, "FW not ready\n");
196 return -EAGAIN;
197 }
198
199 if (!head) {
200 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
201 return -EINVAL;
202 }
203 /* read Tx head till it is not busy */
204 for (retry = 5; retry > 0; retry--) {
205 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
206 if (d_head.sync == 0)
207 break;
208 msleep(20);
209 }
210 if (d_head.sync != 0) {
211 wil_err(wil, "WMI head busy\n");
212 return -EBUSY;
213 }
214 /* next head */
215 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
216 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
217 /* wait till FW finish with previous command */
218 for (retry = 5; retry > 0; retry--) {
219 r->tail = ioread32(wil->csr + HOST_MBOX +
220 offsetof(struct wil6210_mbox_ctl, tx.tail));
221 if (next_head != r->tail)
222 break;
223 msleep(20);
224 }
225 if (next_head == r->tail) {
226 wil_err(wil, "WMI ring full\n");
227 return -EBUSY;
228 }
229 dst = wmi_buffer(wil, d_head.addr);
230 if (!dst) {
231 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
232 le32_to_cpu(d_head.addr));
233 return -EINVAL;
234 }
235 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
236 /* set command */
237 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
238 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
239 sizeof(cmd), true);
240 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
241 len, true);
242 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
243 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
244 /* mark entry as full */
245 iowrite32(1, wil->csr + HOSTADDR(r->head) +
246 offsetof(struct wil6210_mbox_ring_desc, sync));
247 /* advance next ptr */
248 iowrite32(r->head = next_head, wil->csr + HOST_MBOX +
249 offsetof(struct wil6210_mbox_ctl, tx.head));
250
251 trace_wil6210_wmi_cmd(cmdid, buf, len);
252
253 /* interrupt to FW */
254 iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT);
255
256 return 0;
257 }
258
259 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
260 {
261 int rc;
262
263 mutex_lock(&wil->wmi_mutex);
264 rc = __wmi_send(wil, cmdid, buf, len);
265 mutex_unlock(&wil->wmi_mutex);
266
267 return rc;
268 }
269
270 /*=== Event handlers ===*/
271 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
272 {
273 struct net_device *ndev = wil_to_ndev(wil);
274 struct wireless_dev *wdev = wil->wdev;
275 struct wmi_ready_event *evt = d;
276 wil->fw_version = le32_to_cpu(evt->sw_version);
277 wil->n_mids = evt->numof_additional_mids;
278
279 wil_dbg_wmi(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
280 evt->mac, wil->n_mids);
281
282 if (!is_valid_ether_addr(ndev->dev_addr)) {
283 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
284 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
285 }
286 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
287 "%d", wil->fw_version);
288 }
289
290 static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
291 int len)
292 {
293 wil_dbg_wmi(wil, "WMI: FW ready\n");
294
295 set_bit(wil_status_fwready, &wil->status);
296 /* reuse wmi_ready for the firmware ready indication */
297 complete(&wil->wmi_ready);
298 }
299
300 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
301 {
302 struct wmi_rx_mgmt_packet_event *data = d;
303 struct wiphy *wiphy = wil_to_wiphy(wil);
304 struct ieee80211_mgmt *rx_mgmt_frame =
305 (struct ieee80211_mgmt *)data->payload;
306 int ch_no = data->info.channel+1;
307 u32 freq = ieee80211_channel_to_frequency(ch_no,
308 IEEE80211_BAND_60GHZ);
309 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
310 /* TODO convert LE to CPU */
311 s32 signal = 0; /* TODO */
312 __le16 fc = rx_mgmt_frame->frame_control;
313 u32 d_len = le32_to_cpu(data->info.len);
314 u16 d_status = le16_to_cpu(data->info.status);
315
316 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d\n",
317 data->info.channel, data->info.mcs, data->info.snr);
318 wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
319 le16_to_cpu(fc));
320 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
321 data->info.qid, data->info.mid, data->info.cid);
322
323 if (!channel) {
324 wil_err(wil, "Frame on unsupported channel\n");
325 return;
326 }
327
328 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
329 struct cfg80211_bss *bss;
330
331 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
332 d_len, signal, GFP_KERNEL);
333 if (bss) {
334 wil_dbg_wmi(wil, "Added BSS %pM\n",
335 rx_mgmt_frame->bssid);
336 cfg80211_put_bss(wiphy, bss);
337 } else {
338 wil_err(wil, "cfg80211_inform_bss() failed\n");
339 }
340 } else {
341 cfg80211_rx_mgmt(wil->wdev, freq, signal,
342 (void *)rx_mgmt_frame, d_len, GFP_KERNEL);
343 }
344 }
345
346 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
347 void *d, int len)
348 {
349 if (wil->scan_request) {
350 struct wmi_scan_complete_event *data = d;
351 bool aborted = (data->status != 0);
352
353 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
354 cfg80211_scan_done(wil->scan_request, aborted);
355 wil->scan_request = NULL;
356 } else {
357 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
358 }
359 }
360
361 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
362 {
363 struct net_device *ndev = wil_to_ndev(wil);
364 struct wireless_dev *wdev = wil->wdev;
365 struct wmi_connect_event *evt = d;
366 int ch; /* channel number */
367 struct station_info sinfo;
368 u8 *assoc_req_ie, *assoc_resp_ie;
369 size_t assoc_req_ielen, assoc_resp_ielen;
370 /* capinfo(u16) + listen_interval(u16) + IEs */
371 const size_t assoc_req_ie_offset = sizeof(u16) * 2;
372 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
373 const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
374
375 if (len < sizeof(*evt)) {
376 wil_err(wil, "Connect event too short : %d bytes\n", len);
377 return;
378 }
379 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
380 evt->assoc_resp_len) {
381 wil_err(wil,
382 "Connect event corrupted : %d != %d + %d + %d + %d\n",
383 len, (int)sizeof(*evt), evt->beacon_ie_len,
384 evt->assoc_req_len, evt->assoc_resp_len);
385 return;
386 }
387 ch = evt->channel + 1;
388 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
389 evt->bssid, ch, evt->cid);
390 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
391 evt->assoc_info, len - sizeof(*evt), true);
392
393 /* figure out IE's */
394 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
395 assoc_req_ie_offset];
396 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
397 if (evt->assoc_req_len <= assoc_req_ie_offset) {
398 assoc_req_ie = NULL;
399 assoc_req_ielen = 0;
400 }
401
402 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
403 evt->assoc_req_len +
404 assoc_resp_ie_offset];
405 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
406 if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
407 assoc_resp_ie = NULL;
408 assoc_resp_ielen = 0;
409 }
410
411 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
412 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
413 if (!test_bit(wil_status_fwconnecting, &wil->status)) {
414 wil_err(wil, "Not in connecting state\n");
415 return;
416 }
417 del_timer_sync(&wil->connect_timer);
418 cfg80211_connect_result(ndev, evt->bssid,
419 assoc_req_ie, assoc_req_ielen,
420 assoc_resp_ie, assoc_resp_ielen,
421 WLAN_STATUS_SUCCESS, GFP_KERNEL);
422
423 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
424 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
425 memset(&sinfo, 0, sizeof(sinfo));
426
427 sinfo.generation = wil->sinfo_gen++;
428
429 if (assoc_req_ie) {
430 sinfo.assoc_req_ies = assoc_req_ie;
431 sinfo.assoc_req_ies_len = assoc_req_ielen;
432 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
433 }
434
435 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
436 }
437 clear_bit(wil_status_fwconnecting, &wil->status);
438 set_bit(wil_status_fwconnected, &wil->status);
439
440 /* FIXME FW can transmit only ucast frames to peer */
441 /* FIXME real ring_id instead of hard coded 0 */
442 memcpy(wil->dst_addr[0], evt->bssid, ETH_ALEN);
443
444 wil->pending_connect_cid = evt->cid;
445 queue_work(wil->wmi_wq_conn, &wil->connect_worker);
446 }
447
448 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
449 void *d, int len)
450 {
451 struct wmi_disconnect_event *evt = d;
452
453 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
454 evt->bssid,
455 evt->protocol_reason_status, evt->disconnect_reason);
456
457 wil->sinfo_gen++;
458
459 wil6210_disconnect(wil, evt->bssid);
460 }
461
462 static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len)
463 {
464 struct wmi_notify_req_done_event *evt = d;
465
466 if (len < sizeof(*evt)) {
467 wil_err(wil, "Short NOTIFY event\n");
468 return;
469 }
470
471 wil->stats.tsf = le64_to_cpu(evt->tsf);
472 wil->stats.snr = le32_to_cpu(evt->snr_val);
473 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs);
474 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector);
475 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector);
476 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector);
477 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector);
478 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n"
479 "BF status 0x%08x SNR 0x%08x\n"
480 "Tx Tpt %d goodput %d Rx goodput %d\n"
481 "Sectors(rx:tx) my %d:%d peer %d:%d\n",
482 wil->stats.bf_mcs, wil->stats.tsf, evt->status,
483 wil->stats.snr, le32_to_cpu(evt->tx_tpt),
484 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput),
485 wil->stats.my_rx_sector, wil->stats.my_tx_sector,
486 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector);
487 }
488
489 /*
490 * Firmware reports EAPOL frame using WME event.
491 * Reconstruct Ethernet frame and deliver it via normal Rx
492 */
493 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
494 void *d, int len)
495 {
496 struct net_device *ndev = wil_to_ndev(wil);
497 struct wmi_eapol_rx_event *evt = d;
498 u16 eapol_len = le16_to_cpu(evt->eapol_len);
499 int sz = eapol_len + ETH_HLEN;
500 struct sk_buff *skb;
501 struct ethhdr *eth;
502
503 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
504 evt->src_mac);
505
506 if (eapol_len > 196) { /* TODO: revisit size limit */
507 wil_err(wil, "EAPOL too large\n");
508 return;
509 }
510
511 skb = alloc_skb(sz, GFP_KERNEL);
512 if (!skb) {
513 wil_err(wil, "Failed to allocate skb\n");
514 return;
515 }
516 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
517 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
518 memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
519 eth->h_proto = cpu_to_be16(ETH_P_PAE);
520 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
521 skb->protocol = eth_type_trans(skb, ndev);
522 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
523 ndev->stats.rx_packets++;
524 ndev->stats.rx_bytes += skb->len;
525 } else {
526 ndev->stats.rx_dropped++;
527 }
528 }
529
530 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len)
531 {
532 struct net_device *ndev = wil_to_ndev(wil);
533 struct wmi_data_port_open_event *evt = d;
534
535 wil_dbg_wmi(wil, "Link UP for CID %d\n", evt->cid);
536
537 netif_carrier_on(ndev);
538 }
539
540 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len)
541 {
542 struct net_device *ndev = wil_to_ndev(wil);
543 struct wmi_wbe_link_down_event *evt = d;
544
545 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n",
546 evt->cid, le32_to_cpu(evt->reason));
547
548 netif_carrier_off(ndev);
549 }
550
551 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
552 int len)
553 {
554 struct wmi_vring_ba_status_event *evt = d;
555
556 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n",
557 evt->ringid, evt->status ? "N/A" : "OK", evt->agg_wsize,
558 __le16_to_cpu(evt->ba_timeout));
559 }
560
561 static const struct {
562 int eventid;
563 void (*handler)(struct wil6210_priv *wil, int eventid,
564 void *data, int data_len);
565 } wmi_evt_handlers[] = {
566 {WMI_READY_EVENTID, wmi_evt_ready},
567 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready},
568 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt},
569 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete},
570 {WMI_CONNECT_EVENTID, wmi_evt_connect},
571 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect},
572 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify},
573 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
574 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup},
575 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown},
576 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status},
577 };
578
579 /*
580 * Run in IRQ context
581 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
582 * that will be eventually handled by the @wmi_event_worker in the thread
583 * context of thread "wil6210_wmi"
584 */
585 void wmi_recv_cmd(struct wil6210_priv *wil)
586 {
587 struct wil6210_mbox_ring_desc d_tail;
588 struct wil6210_mbox_hdr hdr;
589 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
590 struct pending_wmi_event *evt;
591 u8 *cmd;
592 void __iomem *src;
593 ulong flags;
594
595 if (!test_bit(wil_status_reset_done, &wil->status)) {
596 wil_err(wil, "Reset not completed\n");
597 return;
598 }
599
600 for (;;) {
601 u16 len;
602
603 r->head = ioread32(wil->csr + HOST_MBOX +
604 offsetof(struct wil6210_mbox_ctl, rx.head));
605 if (r->tail == r->head)
606 return;
607
608 /* read cmd from tail */
609 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
610 sizeof(struct wil6210_mbox_ring_desc));
611 if (d_tail.sync == 0) {
612 wil_err(wil, "Mbox evt not owned by FW?\n");
613 return;
614 }
615
616 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
617 wil_err(wil, "Mbox evt at 0x%08x?\n",
618 le32_to_cpu(d_tail.addr));
619 return;
620 }
621
622 len = le16_to_cpu(hdr.len);
623 src = wmi_buffer(wil, d_tail.addr) +
624 sizeof(struct wil6210_mbox_hdr);
625 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
626 event.wmi) + len, 4),
627 GFP_KERNEL);
628 if (!evt)
629 return;
630
631 evt->event.hdr = hdr;
632 cmd = (void *)&evt->event.wmi;
633 wil_memcpy_fromio_32(cmd, src, len);
634 /* mark entry as empty */
635 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
636 offsetof(struct wil6210_mbox_ring_desc, sync));
637 /* indicate */
638 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
639 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
640 hdr.flags);
641 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
642 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
643 u16 id = le16_to_cpu(evt->event.wmi.id);
644 wil_dbg_wmi(wil, "WMI event 0x%04x\n", id);
645 trace_wil6210_wmi_event(id, &evt->event.wmi, len);
646 }
647 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
648 &evt->event.hdr, sizeof(hdr) + len, true);
649
650 /* advance tail */
651 r->tail = r->base + ((r->tail - r->base +
652 sizeof(struct wil6210_mbox_ring_desc)) % r->size);
653 iowrite32(r->tail, wil->csr + HOST_MBOX +
654 offsetof(struct wil6210_mbox_ctl, rx.tail));
655
656 /* add to the pending list */
657 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
658 list_add_tail(&evt->list, &wil->pending_wmi_ev);
659 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
660 {
661 int q = queue_work(wil->wmi_wq,
662 &wil->wmi_event_worker);
663 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
664 }
665 }
666 }
667
668 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
669 u16 reply_id, void *reply, u8 reply_size, int to_msec)
670 {
671 int rc;
672 int remain;
673
674 mutex_lock(&wil->wmi_mutex);
675
676 rc = __wmi_send(wil, cmdid, buf, len);
677 if (rc)
678 goto out;
679
680 wil->reply_id = reply_id;
681 wil->reply_buf = reply;
682 wil->reply_size = reply_size;
683 remain = wait_for_completion_timeout(&wil->wmi_ready,
684 msecs_to_jiffies(to_msec));
685 if (0 == remain) {
686 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
687 cmdid, reply_id, to_msec);
688 rc = -ETIME;
689 } else {
690 wil_dbg_wmi(wil,
691 "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
692 cmdid, reply_id,
693 to_msec - jiffies_to_msecs(remain));
694 }
695 wil->reply_id = 0;
696 wil->reply_buf = NULL;
697 wil->reply_size = 0;
698 out:
699 mutex_unlock(&wil->wmi_mutex);
700
701 return rc;
702 }
703
704 int wmi_echo(struct wil6210_priv *wil)
705 {
706 struct wmi_echo_cmd cmd = {
707 .value = cpu_to_le32(0x12345678),
708 };
709
710 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
711 WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
712 }
713
714 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
715 {
716 struct wmi_set_mac_address_cmd cmd;
717
718 memcpy(cmd.mac, addr, ETH_ALEN);
719
720 wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
721
722 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
723 }
724
725 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
726 {
727 int rc;
728
729 struct wmi_pcp_start_cmd cmd = {
730 .bcon_interval = cpu_to_le16(bi),
731 .network_type = wmi_nettype,
732 .disable_sec_offload = 1,
733 .channel = chan - 1,
734 };
735 struct {
736 struct wil6210_mbox_hdr_wmi wmi;
737 struct wmi_pcp_started_event evt;
738 } __packed reply;
739
740 if (!wil->secure_pcp)
741 cmd.disable_sec = 1;
742
743 /*
744 * Processing time may be huge, in case of secure AP it takes about
745 * 3500ms for FW to start AP
746 */
747 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
748 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
749 if (rc)
750 return rc;
751
752 if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
753 rc = -EINVAL;
754
755 return rc;
756 }
757
758 int wmi_pcp_stop(struct wil6210_priv *wil)
759 {
760 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
761 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
762 }
763
764 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
765 {
766 struct wmi_set_ssid_cmd cmd = {
767 .ssid_len = cpu_to_le32(ssid_len),
768 };
769
770 if (ssid_len > sizeof(cmd.ssid))
771 return -EINVAL;
772
773 memcpy(cmd.ssid, ssid, ssid_len);
774
775 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
776 }
777
778 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
779 {
780 int rc;
781 struct {
782 struct wil6210_mbox_hdr_wmi wmi;
783 struct wmi_set_ssid_cmd cmd;
784 } __packed reply;
785 int len; /* reply.cmd.ssid_len in CPU order */
786
787 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
788 &reply, sizeof(reply), 20);
789 if (rc)
790 return rc;
791
792 len = le32_to_cpu(reply.cmd.ssid_len);
793 if (len > sizeof(reply.cmd.ssid))
794 return -EINVAL;
795
796 *ssid_len = len;
797 memcpy(ssid, reply.cmd.ssid, len);
798
799 return 0;
800 }
801
802 int wmi_set_channel(struct wil6210_priv *wil, int channel)
803 {
804 struct wmi_set_pcp_channel_cmd cmd = {
805 .channel = channel - 1,
806 };
807
808 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
809 }
810
811 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
812 {
813 int rc;
814 struct {
815 struct wil6210_mbox_hdr_wmi wmi;
816 struct wmi_set_pcp_channel_cmd cmd;
817 } __packed reply;
818
819 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
820 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
821 if (rc)
822 return rc;
823
824 if (reply.cmd.channel > 3)
825 return -EINVAL;
826
827 *channel = reply.cmd.channel + 1;
828
829 return 0;
830 }
831
832 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
833 {
834 struct wmi_p2p_cfg_cmd cmd = {
835 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
836 .channel = channel - 1,
837 };
838
839 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
840 }
841
842 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
843 const void *mac_addr)
844 {
845 struct wmi_delete_cipher_key_cmd cmd = {
846 .key_index = key_index,
847 };
848
849 if (mac_addr)
850 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
851
852 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
853 }
854
855 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
856 const void *mac_addr, int key_len, const void *key)
857 {
858 struct wmi_add_cipher_key_cmd cmd = {
859 .key_index = key_index,
860 .key_usage = WMI_KEY_USE_PAIRWISE,
861 .key_len = key_len,
862 };
863
864 if (!key || (key_len > sizeof(cmd.key)))
865 return -EINVAL;
866
867 memcpy(cmd.key, key, key_len);
868 if (mac_addr)
869 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
870
871 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
872 }
873
874 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
875 {
876 int rc;
877 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
878 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
879 if (!cmd)
880 return -ENOMEM;
881
882 cmd->mgmt_frm_type = type;
883 /* BUG: FW API define ieLen as u8. Will fix FW */
884 cmd->ie_len = cpu_to_le16(ie_len);
885 memcpy(cmd->ie_info, ie, ie_len);
886 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
887 kfree(cmd);
888
889 return rc;
890 }
891
892 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
893 {
894 struct wireless_dev *wdev = wil->wdev;
895 struct net_device *ndev = wil_to_ndev(wil);
896 struct wmi_cfg_rx_chain_cmd cmd = {
897 .action = WMI_RX_CHAIN_ADD,
898 .rx_sw_ring = {
899 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
900 .ring_mem_base = cpu_to_le64(vring->pa),
901 .ring_size = cpu_to_le16(vring->size),
902 },
903 .mid = 0, /* TODO - what is it? */
904 .decap_trans_type = WMI_DECAP_TYPE_802_3,
905 };
906 struct {
907 struct wil6210_mbox_hdr_wmi wmi;
908 struct wmi_cfg_rx_chain_done_event evt;
909 } __packed evt;
910 int rc;
911
912 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
913 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
914
915 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
916 if (ch)
917 cmd.sniffer_cfg.channel = ch->hw_value - 1;
918 cmd.sniffer_cfg.phy_info_mode =
919 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
920 cmd.sniffer_cfg.phy_support =
921 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
922 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
923 }
924 /* typical time for secure PCP is 840ms */
925 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
926 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
927 if (rc)
928 return rc;
929
930 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
931
932 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
933 le32_to_cpu(evt.evt.status), vring->hwtail);
934
935 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
936 rc = -EINVAL;
937
938 return rc;
939 }
940
941 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r)
942 {
943 int rc;
944 struct wmi_temp_sense_cmd cmd = {
945 .measure_marlon_m_en = cpu_to_le32(!!t_m),
946 .measure_marlon_r_en = cpu_to_le32(!!t_r),
947 };
948 struct {
949 struct wil6210_mbox_hdr_wmi wmi;
950 struct wmi_temp_sense_done_event evt;
951 } __packed reply;
952
953 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
954 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
955 if (rc)
956 return rc;
957
958 if (t_m)
959 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000);
960 if (t_r)
961 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000);
962
963 return 0;
964 }
965
966 void wmi_event_flush(struct wil6210_priv *wil)
967 {
968 struct pending_wmi_event *evt, *t;
969
970 wil_dbg_wmi(wil, "%s()\n", __func__);
971
972 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
973 list_del(&evt->list);
974 kfree(evt);
975 }
976 }
977
978 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
979 void *d, int len)
980 {
981 uint i;
982
983 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
984 if (wmi_evt_handlers[i].eventid == id) {
985 wmi_evt_handlers[i].handler(wil, id, d, len);
986 return true;
987 }
988 }
989
990 return false;
991 }
992
993 static void wmi_event_handle(struct wil6210_priv *wil,
994 struct wil6210_mbox_hdr *hdr)
995 {
996 u16 len = le16_to_cpu(hdr->len);
997
998 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
999 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1000 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1001 void *evt_data = (void *)(&wmi[1]);
1002 u16 id = le16_to_cpu(wmi->id);
1003 /* check if someone waits for this event */
1004 if (wil->reply_id && wil->reply_id == id) {
1005 if (wil->reply_buf) {
1006 memcpy(wil->reply_buf, wmi,
1007 min(len, wil->reply_size));
1008 } else {
1009 wmi_evt_call_handler(wil, id, evt_data,
1010 len - sizeof(*wmi));
1011 }
1012 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
1013 complete(&wil->wmi_ready);
1014 return;
1015 }
1016 /* unsolicited event */
1017 /* search for handler */
1018 if (!wmi_evt_call_handler(wil, id, evt_data,
1019 len - sizeof(*wmi))) {
1020 wil_err(wil, "Unhandled event 0x%04x\n", id);
1021 }
1022 } else {
1023 wil_err(wil, "Unknown event type\n");
1024 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1025 hdr, sizeof(*hdr) + len, true);
1026 }
1027 }
1028
1029 /*
1030 * Retrieve next WMI event from the pending list
1031 */
1032 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1033 {
1034 ulong flags;
1035 struct list_head *ret = NULL;
1036
1037 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1038
1039 if (!list_empty(&wil->pending_wmi_ev)) {
1040 ret = wil->pending_wmi_ev.next;
1041 list_del(ret);
1042 }
1043
1044 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1045
1046 return ret;
1047 }
1048
1049 /*
1050 * Handler for the WMI events
1051 */
1052 void wmi_event_worker(struct work_struct *work)
1053 {
1054 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1055 wmi_event_worker);
1056 struct pending_wmi_event *evt;
1057 struct list_head *lh;
1058
1059 while ((lh = next_wmi_ev(wil)) != NULL) {
1060 evt = list_entry(lh, struct pending_wmi_event, list);
1061 wmi_event_handle(wil, &evt->event.hdr);
1062 kfree(evt);
1063 }
1064 }
Linux kernel - Deliverables
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