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wil6210: fix checkpatch CamelCase warnings
[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/pci.h>
18 #include <linux/io.h>
19 #include <linux/list.h>
20 #include <linux/etherdevice.h>
21 #include <linux/if_arp.h>
22
23 #include "wil6210.h"
24 #include "txrx.h"
25 #include "wmi.h"
26
27 /**
28 * WMI event receiving - theory of operations
29 *
30 * When firmware about to report WMI event, it fills memory area
31 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
32 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
33 *
34 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the
35 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
36 * and handles events within the @wmi_event_worker. Every event get detached
37 * from list, processed and deleted.
38 *
39 * Purpose for this mechanism is to release IRQ thread; otherwise,
40 * if WMI event handling involves another WMI command flow, this 2-nd flow
41 * won't be completed because of blocked IRQ thread.
42 */
43
44 /**
45 * Addressing - theory of operations
46 *
47 * There are several buses present on the WIL6210 card.
48 * Same memory areas are visible at different address on
49 * the different busses. There are 3 main bus masters:
50 * - MAC CPU (ucode)
51 * - User CPU (firmware)
52 * - AHB (host)
53 *
54 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
55 * AHB addresses starting from 0x880000
56 *
57 * Internally, firmware uses addresses that allows faster access but
58 * are invisible from the host. To read from these addresses, alternative
59 * AHB address must be used.
60 *
61 * Memory mapping
62 * Linker address PCI/Host address
63 * 0x880000 .. 0xa80000 2Mb BAR0
64 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM
65 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH
66 */
67
68 /**
69 * @fw_mapping provides memory remapping table
70 */
71 static const struct {
72 u32 from; /* linker address - from, inclusive */
73 u32 to; /* linker address - to, exclusive */
74 u32 host; /* PCI/Host address - BAR0 + 0x880000 */
75 } fw_mapping[] = {
76 {0x000000, 0x040000, 0x8c0000}, /* FW code RAM 256k */
77 {0x800000, 0x808000, 0x900000}, /* FW data RAM 32k */
78 {0x840000, 0x860000, 0x908000}, /* peripheral data RAM 128k/96k used */
79 {0x880000, 0x88a000, 0x880000}, /* various RGF */
80 {0x8c0000, 0x932000, 0x8c0000}, /* trivial mapping for upper area */
81 /*
82 * 920000..930000 ucode code RAM
83 * 930000..932000 ucode data RAM
84 */
85 };
86
87 /**
88 * return AHB address for given firmware/ucode internal (linker) address
89 * @x - internal address
90 * If address have no valid AHB mapping, return 0
91 */
92 static u32 wmi_addr_remap(u32 x)
93 {
94 uint i;
95
96 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
97 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
98 return x + fw_mapping[i].host - fw_mapping[i].from;
99 }
100
101 return 0;
102 }
103
104 /**
105 * Check address validity for WMI buffer; remap if needed
106 * @ptr - internal (linker) fw/ucode address
107 *
108 * Valid buffer should be DWORD aligned
109 *
110 * return address for accessing buffer from the host;
111 * if buffer is not valid, return NULL.
112 */
113 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
114 {
115 u32 off;
116 u32 ptr = le32_to_cpu(ptr_);
117
118 if (ptr % 4)
119 return NULL;
120
121 ptr = wmi_addr_remap(ptr);
122 if (ptr < WIL6210_FW_HOST_OFF)
123 return NULL;
124
125 off = HOSTADDR(ptr);
126 if (off > WIL6210_MEM_SIZE - 4)
127 return NULL;
128
129 return wil->csr + off;
130 }
131
132 /**
133 * Check address validity
134 */
135 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
136 {
137 u32 off;
138
139 if (ptr % 4)
140 return NULL;
141
142 if (ptr < WIL6210_FW_HOST_OFF)
143 return NULL;
144
145 off = HOSTADDR(ptr);
146 if (off > WIL6210_MEM_SIZE - 4)
147 return NULL;
148
149 return wil->csr + off;
150 }
151
152 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
153 struct wil6210_mbox_hdr *hdr)
154 {
155 void __iomem *src = wmi_buffer(wil, ptr);
156 if (!src)
157 return -EINVAL;
158
159 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
160
161 return 0;
162 }
163
164 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
165 {
166 struct {
167 struct wil6210_mbox_hdr hdr;
168 struct wil6210_mbox_hdr_wmi wmi;
169 } __packed cmd = {
170 .hdr = {
171 .type = WIL_MBOX_HDR_TYPE_WMI,
172 .flags = 0,
173 .len = cpu_to_le16(sizeof(cmd.wmi) + len),
174 },
175 .wmi = {
176 .id = cpu_to_le16(cmdid),
177 .info1 = 0,
178 },
179 };
180 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
181 struct wil6210_mbox_ring_desc d_head;
182 u32 next_head;
183 void __iomem *dst;
184 void __iomem *head = wmi_addr(wil, r->head);
185 uint retry;
186
187 if (sizeof(cmd) + len > r->entry_size) {
188 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
189 (int)(sizeof(cmd) + len), r->entry_size);
190 return -ERANGE;
191
192 }
193
194 might_sleep();
195
196 if (!test_bit(wil_status_fwready, &wil->status)) {
197 wil_err(wil, "FW not ready\n");
198 return -EAGAIN;
199 }
200
201 if (!head) {
202 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
203 return -EINVAL;
204 }
205 /* read Tx head till it is not busy */
206 for (retry = 5; retry > 0; retry--) {
207 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
208 if (d_head.sync == 0)
209 break;
210 msleep(20);
211 }
212 if (d_head.sync != 0) {
213 wil_err(wil, "WMI head busy\n");
214 return -EBUSY;
215 }
216 /* next head */
217 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
218 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
219 /* wait till FW finish with previous command */
220 for (retry = 5; retry > 0; retry--) {
221 r->tail = ioread32(wil->csr + HOST_MBOX +
222 offsetof(struct wil6210_mbox_ctl, tx.tail));
223 if (next_head != r->tail)
224 break;
225 msleep(20);
226 }
227 if (next_head == r->tail) {
228 wil_err(wil, "WMI ring full\n");
229 return -EBUSY;
230 }
231 dst = wmi_buffer(wil, d_head.addr);
232 if (!dst) {
233 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
234 le32_to_cpu(d_head.addr));
235 return -EINVAL;
236 }
237 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
238 /* set command */
239 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
240 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
241 sizeof(cmd), true);
242 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
243 len, true);
244 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
245 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
246 /* mark entry as full */
247 iowrite32(1, wil->csr + HOSTADDR(r->head) +
248 offsetof(struct wil6210_mbox_ring_desc, sync));
249 /* advance next ptr */
250 iowrite32(r->head = next_head, wil->csr + HOST_MBOX +
251 offsetof(struct wil6210_mbox_ctl, tx.head));
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 u32 ver = le32_to_cpu(evt->sw_version);
277
278 wil_dbg_wmi(wil, "FW ver. %d; MAC %pM\n", ver, evt->mac);
279
280 if (!is_valid_ether_addr(ndev->dev_addr)) {
281 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
282 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
283 }
284 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
285 "%d", ver);
286 }
287
288 static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
289 int len)
290 {
291 wil_dbg_wmi(wil, "WMI: FW ready\n");
292
293 set_bit(wil_status_fwready, &wil->status);
294 /* reuse wmi_ready for the firmware ready indication */
295 complete(&wil->wmi_ready);
296 }
297
298 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
299 {
300 struct wmi_rx_mgmt_packet_event *data = d;
301 struct wiphy *wiphy = wil_to_wiphy(wil);
302 struct ieee80211_mgmt *rx_mgmt_frame =
303 (struct ieee80211_mgmt *)data->payload;
304 int ch_no = data->info.channel+1;
305 u32 freq = ieee80211_channel_to_frequency(ch_no,
306 IEEE80211_BAND_60GHZ);
307 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
308 /* TODO convert LE to CPU */
309 s32 signal = 0; /* TODO */
310 __le16 fc = rx_mgmt_frame->frame_control;
311 u32 d_len = le32_to_cpu(data->info.len);
312 u16 d_status = le16_to_cpu(data->info.status);
313
314 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d\n",
315 data->info.channel, data->info.mcs, data->info.snr);
316 wil_dbg_wmi(wil, "status 0x%04x len %d stype %04x\n", d_status, d_len,
317 le16_to_cpu(data->info.stype));
318 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
319 data->info.qid, data->info.mid, data->info.cid);
320
321 if (!channel) {
322 wil_err(wil, "Frame on unsupported channel\n");
323 return;
324 }
325
326 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
327 struct cfg80211_bss *bss;
328 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
329 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
330 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
331 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
332 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
333 u.beacon.variable);
334 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
335
336 bss = cfg80211_inform_bss(wiphy, channel, rx_mgmt_frame->bssid,
337 tsf, cap, bi, ie_buf, ie_len,
338 signal, GFP_KERNEL);
339 if (bss) {
340 wil_dbg_wmi(wil, "Added BSS %pM\n",
341 rx_mgmt_frame->bssid);
342 cfg80211_put_bss(bss);
343 } else {
344 wil_err(wil, "cfg80211_inform_bss() failed\n");
345 }
346 }
347 }
348
349 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
350 void *d, int len)
351 {
352 if (wil->scan_request) {
353 struct wmi_scan_complete_event *data = d;
354 bool aborted = (data->status != 0);
355
356 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
357 cfg80211_scan_done(wil->scan_request, aborted);
358 wil->scan_request = NULL;
359 } else {
360 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
361 }
362 }
363
364 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
365 {
366 struct net_device *ndev = wil_to_ndev(wil);
367 struct wireless_dev *wdev = wil->wdev;
368 struct wmi_connect_event *evt = d;
369 int ch; /* channel number */
370 struct station_info sinfo;
371 u8 *assoc_req_ie, *assoc_resp_ie;
372 size_t assoc_req_ielen, assoc_resp_ielen;
373 /* capinfo(u16) + listen_interval(u16) + IEs */
374 const size_t assoc_req_ie_offset = sizeof(u16) * 2;
375 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
376 const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
377
378 if (len < sizeof(*evt)) {
379 wil_err(wil, "Connect event too short : %d bytes\n", len);
380 return;
381 }
382 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
383 evt->assoc_resp_len) {
384 wil_err(wil,
385 "Connect event corrupted : %d != %d + %d + %d + %d\n",
386 len, (int)sizeof(*evt), evt->beacon_ie_len,
387 evt->assoc_req_len, evt->assoc_resp_len);
388 return;
389 }
390 ch = evt->channel + 1;
391 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
392 evt->bssid, ch, evt->cid);
393 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
394 evt->assoc_info, len - sizeof(*evt), true);
395
396 /* figure out IE's */
397 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
398 assoc_req_ie_offset];
399 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
400 if (evt->assoc_req_len <= assoc_req_ie_offset) {
401 assoc_req_ie = NULL;
402 assoc_req_ielen = 0;
403 }
404
405 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
406 evt->assoc_req_len +
407 assoc_resp_ie_offset];
408 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
409 if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
410 assoc_resp_ie = NULL;
411 assoc_resp_ielen = 0;
412 }
413
414 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
415 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
416 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
417 wil_err(wil, "Not in connecting state\n");
418 return;
419 }
420 del_timer_sync(&wil->connect_timer);
421 cfg80211_connect_result(ndev, evt->bssid,
422 assoc_req_ie, assoc_req_ielen,
423 assoc_resp_ie, assoc_resp_ielen,
424 WLAN_STATUS_SUCCESS, GFP_KERNEL);
425
426 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
427 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
428 memset(&sinfo, 0, sizeof(sinfo));
429
430 sinfo.generation = wil->sinfo_gen++;
431
432 if (assoc_req_ie) {
433 sinfo.assoc_req_ies = assoc_req_ie;
434 sinfo.assoc_req_ies_len = assoc_req_ielen;
435 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
436 }
437
438 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
439 }
440 set_bit(wil_status_fwconnected, &wil->status);
441
442 /* FIXME FW can transmit only ucast frames to peer */
443 /* FIXME real ring_id instead of hard coded 0 */
444 memcpy(wil->dst_addr[0], evt->bssid, ETH_ALEN);
445
446 wil->pending_connect_cid = evt->cid;
447 queue_work(wil->wmi_wq_conn, &wil->wmi_connect_worker);
448 }
449
450 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
451 void *d, int len)
452 {
453 struct wmi_disconnect_event *evt = d;
454
455 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
456 evt->bssid,
457 evt->protocol_reason_status, evt->disconnect_reason);
458
459 wil->sinfo_gen++;
460
461 wil6210_disconnect(wil, evt->bssid);
462 }
463
464 static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len)
465 {
466 struct wmi_notify_req_done_event *evt = d;
467
468 if (len < sizeof(*evt)) {
469 wil_err(wil, "Short NOTIFY event\n");
470 return;
471 }
472
473 wil->stats.tsf = le64_to_cpu(evt->tsf);
474 wil->stats.snr = le32_to_cpu(evt->snr_val);
475 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs);
476 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector);
477 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector);
478 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector);
479 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector);
480 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n"
481 "BF status 0x%08x SNR 0x%08x\n"
482 "Tx Tpt %d goodput %d Rx goodput %d\n"
483 "Sectors(rx:tx) my %d:%d peer %d:%d\n",
484 wil->stats.bf_mcs, wil->stats.tsf, evt->status,
485 wil->stats.snr, le32_to_cpu(evt->tx_tpt),
486 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput),
487 wil->stats.my_rx_sector, wil->stats.my_tx_sector,
488 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector);
489 }
490
491 /*
492 * Firmware reports EAPOL frame using WME event.
493 * Reconstruct Ethernet frame and deliver it via normal Rx
494 */
495 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
496 void *d, int len)
497 {
498 struct net_device *ndev = wil_to_ndev(wil);
499 struct wmi_eapol_rx_event *evt = d;
500 u16 eapol_len = le16_to_cpu(evt->eapol_len);
501 int sz = eapol_len + ETH_HLEN;
502 struct sk_buff *skb;
503 struct ethhdr *eth;
504
505 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
506 evt->src_mac);
507
508 if (eapol_len > 196) { /* TODO: revisit size limit */
509 wil_err(wil, "EAPOL too large\n");
510 return;
511 }
512
513 skb = alloc_skb(sz, GFP_KERNEL);
514 if (!skb) {
515 wil_err(wil, "Failed to allocate skb\n");
516 return;
517 }
518 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
519 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
520 memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
521 eth->h_proto = cpu_to_be16(ETH_P_PAE);
522 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
523 skb->protocol = eth_type_trans(skb, ndev);
524 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
525 ndev->stats.rx_packets++;
526 ndev->stats.rx_bytes += skb->len;
527 } else {
528 ndev->stats.rx_dropped++;
529 }
530 }
531
532 static const struct {
533 int eventid;
534 void (*handler)(struct wil6210_priv *wil, int eventid,
535 void *data, int data_len);
536 } wmi_evt_handlers[] = {
537 {WMI_READY_EVENTID, wmi_evt_ready},
538 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready},
539 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt},
540 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete},
541 {WMI_CONNECT_EVENTID, wmi_evt_connect},
542 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect},
543 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify},
544 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
545 };
546
547 /*
548 * Run in IRQ context
549 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
550 * that will be eventually handled by the @wmi_event_worker in the thread
551 * context of thread "wil6210_wmi"
552 */
553 void wmi_recv_cmd(struct wil6210_priv *wil)
554 {
555 struct wil6210_mbox_ring_desc d_tail;
556 struct wil6210_mbox_hdr hdr;
557 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
558 struct pending_wmi_event *evt;
559 u8 *cmd;
560 void __iomem *src;
561 ulong flags;
562
563 for (;;) {
564 u16 len;
565
566 r->head = ioread32(wil->csr + HOST_MBOX +
567 offsetof(struct wil6210_mbox_ctl, rx.head));
568 if (r->tail == r->head)
569 return;
570
571 /* read cmd from tail */
572 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
573 sizeof(struct wil6210_mbox_ring_desc));
574 if (d_tail.sync == 0) {
575 wil_err(wil, "Mbox evt not owned by FW?\n");
576 return;
577 }
578
579 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
580 wil_err(wil, "Mbox evt at 0x%08x?\n",
581 le32_to_cpu(d_tail.addr));
582 return;
583 }
584
585 len = le16_to_cpu(hdr.len);
586 src = wmi_buffer(wil, d_tail.addr) +
587 sizeof(struct wil6210_mbox_hdr);
588 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
589 event.wmi) + len, 4),
590 GFP_KERNEL);
591 if (!evt) {
592 wil_err(wil, "kmalloc for WMI event (%d) failed\n",
593 len);
594 return;
595 }
596 evt->event.hdr = hdr;
597 cmd = (void *)&evt->event.wmi;
598 wil_memcpy_fromio_32(cmd, src, len);
599 /* mark entry as empty */
600 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
601 offsetof(struct wil6210_mbox_ring_desc, sync));
602 /* indicate */
603 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
604 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
605 hdr.flags);
606 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
607 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
608 wil_dbg_wmi(wil, "WMI event 0x%04x\n",
609 evt->event.wmi.id);
610 }
611 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
612 &evt->event.hdr, sizeof(hdr) + len, true);
613
614 /* advance tail */
615 r->tail = r->base + ((r->tail - r->base +
616 sizeof(struct wil6210_mbox_ring_desc)) % r->size);
617 iowrite32(r->tail, wil->csr + HOST_MBOX +
618 offsetof(struct wil6210_mbox_ctl, rx.tail));
619
620 /* add to the pending list */
621 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
622 list_add_tail(&evt->list, &wil->pending_wmi_ev);
623 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
624 {
625 int q = queue_work(wil->wmi_wq,
626 &wil->wmi_event_worker);
627 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
628 }
629 }
630 }
631
632 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
633 u16 reply_id, void *reply, u8 reply_size, int to_msec)
634 {
635 int rc;
636 int remain;
637
638 mutex_lock(&wil->wmi_mutex);
639
640 rc = __wmi_send(wil, cmdid, buf, len);
641 if (rc)
642 goto out;
643
644 wil->reply_id = reply_id;
645 wil->reply_buf = reply;
646 wil->reply_size = reply_size;
647 remain = wait_for_completion_timeout(&wil->wmi_ready,
648 msecs_to_jiffies(to_msec));
649 if (0 == remain) {
650 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
651 cmdid, reply_id, to_msec);
652 rc = -ETIME;
653 } else {
654 wil_dbg_wmi(wil,
655 "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
656 cmdid, reply_id,
657 to_msec - jiffies_to_msecs(remain));
658 }
659 wil->reply_id = 0;
660 wil->reply_buf = NULL;
661 wil->reply_size = 0;
662 out:
663 mutex_unlock(&wil->wmi_mutex);
664
665 return rc;
666 }
667
668 int wmi_echo(struct wil6210_priv *wil)
669 {
670 struct wmi_echo_cmd cmd = {
671 .value = cpu_to_le32(0x12345678),
672 };
673
674 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
675 WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
676 }
677
678 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
679 {
680 struct wmi_set_mac_address_cmd cmd;
681
682 memcpy(cmd.mac, addr, ETH_ALEN);
683
684 wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
685
686 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
687 }
688
689 int wmi_set_bcon(struct wil6210_priv *wil, int bi, u8 wmi_nettype)
690 {
691 struct wmi_bcon_ctrl_cmd cmd = {
692 .bcon_interval = cpu_to_le16(bi),
693 .network_type = wmi_nettype,
694 .disable_sec_offload = 1,
695 };
696
697 if (!wil->secure_pcp)
698 cmd.disable_sec = 1;
699
700 return wmi_send(wil, WMI_BCON_CTRL_CMDID, &cmd, sizeof(cmd));
701 }
702
703 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
704 {
705 struct wmi_set_ssid_cmd cmd = {
706 .ssid_len = cpu_to_le32(ssid_len),
707 };
708
709 if (ssid_len > sizeof(cmd.ssid))
710 return -EINVAL;
711
712 memcpy(cmd.ssid, ssid, ssid_len);
713
714 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
715 }
716
717 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
718 {
719 int rc;
720 struct {
721 struct wil6210_mbox_hdr_wmi wmi;
722 struct wmi_set_ssid_cmd cmd;
723 } __packed reply;
724 int len; /* reply.cmd.ssid_len in CPU order */
725
726 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
727 &reply, sizeof(reply), 20);
728 if (rc)
729 return rc;
730
731 len = le32_to_cpu(reply.cmd.ssid_len);
732 if (len > sizeof(reply.cmd.ssid))
733 return -EINVAL;
734
735 *ssid_len = len;
736 memcpy(ssid, reply.cmd.ssid, len);
737
738 return 0;
739 }
740
741 int wmi_set_channel(struct wil6210_priv *wil, int channel)
742 {
743 struct wmi_set_pcp_channel_cmd cmd = {
744 .channel = channel - 1,
745 };
746
747 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
748 }
749
750 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
751 {
752 int rc;
753 struct {
754 struct wil6210_mbox_hdr_wmi wmi;
755 struct wmi_set_pcp_channel_cmd cmd;
756 } __packed reply;
757
758 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
759 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
760 if (rc)
761 return rc;
762
763 if (reply.cmd.channel > 3)
764 return -EINVAL;
765
766 *channel = reply.cmd.channel + 1;
767
768 return 0;
769 }
770
771 int wmi_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb)
772 {
773 struct wmi_eapol_tx_cmd *cmd;
774 struct ethhdr *eth;
775 u16 eapol_len = skb->len - ETH_HLEN;
776 void *eapol = skb->data + ETH_HLEN;
777 uint i;
778 int rc;
779
780 skb_set_mac_header(skb, 0);
781 eth = eth_hdr(skb);
782 wil_dbg_wmi(wil, "EAPOL %d bytes to %pM\n", eapol_len, eth->h_dest);
783 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
784 if (memcmp(wil->dst_addr[i], eth->h_dest, ETH_ALEN) == 0)
785 goto found_dest;
786 }
787
788 return -EINVAL;
789
790 found_dest:
791 /* find out eapol data & len */
792 cmd = kzalloc(sizeof(*cmd) + eapol_len, GFP_KERNEL);
793 if (!cmd)
794 return -EINVAL;
795
796 memcpy(cmd->dst_mac, eth->h_dest, ETH_ALEN);
797 cmd->eapol_len = cpu_to_le16(eapol_len);
798 memcpy(cmd->eapol, eapol, eapol_len);
799 rc = wmi_send(wil, WMI_EAPOL_TX_CMDID, cmd, sizeof(*cmd) + eapol_len);
800 kfree(cmd);
801
802 return rc;
803 }
804
805 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
806 const void *mac_addr)
807 {
808 struct wmi_delete_cipher_key_cmd cmd = {
809 .key_index = key_index,
810 };
811
812 if (mac_addr)
813 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
814
815 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
816 }
817
818 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
819 const void *mac_addr, int key_len, const void *key)
820 {
821 struct wmi_add_cipher_key_cmd cmd = {
822 .key_index = key_index,
823 .key_usage = WMI_KEY_USE_PAIRWISE,
824 .key_len = key_len,
825 };
826
827 if (!key || (key_len > sizeof(cmd.key)))
828 return -EINVAL;
829
830 memcpy(cmd.key, key, key_len);
831 if (mac_addr)
832 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
833
834 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
835 }
836
837 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
838 {
839 int rc;
840 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
841 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
842 if (!cmd) {
843 wil_err(wil, "kmalloc(%d) failed\n", len);
844 return -ENOMEM;
845 }
846
847 cmd->mgmt_frm_type = type;
848 /* BUG: FW API define ieLen as u8. Will fix FW */
849 cmd->ie_len = cpu_to_le16(ie_len);
850 memcpy(cmd->ie_info, ie, ie_len);
851 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, &cmd, len);
852 kfree(cmd);
853
854 return rc;
855 }
856
857 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
858 {
859 struct wireless_dev *wdev = wil->wdev;
860 struct net_device *ndev = wil_to_ndev(wil);
861 struct wmi_cfg_rx_chain_cmd cmd = {
862 .action = WMI_RX_CHAIN_ADD,
863 .rx_sw_ring = {
864 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
865 .ring_mem_base = cpu_to_le64(vring->pa),
866 .ring_size = cpu_to_le16(vring->size),
867 },
868 .mid = 0, /* TODO - what is it? */
869 .decap_trans_type = WMI_DECAP_TYPE_802_3,
870 };
871 struct {
872 struct wil6210_mbox_hdr_wmi wmi;
873 struct wmi_cfg_rx_chain_done_event evt;
874 } __packed evt;
875 int rc;
876
877 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
878 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
879
880 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
881 if (ch)
882 cmd.sniffer_cfg.channel = ch->hw_value - 1;
883 cmd.sniffer_cfg.phy_info_mode =
884 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
885 cmd.sniffer_cfg.phy_support =
886 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
887 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
888 }
889 /* typical time for secure PCP is 840ms */
890 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
891 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
892 if (rc)
893 return rc;
894
895 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
896
897 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
898 le32_to_cpu(evt.evt.status), vring->hwtail);
899
900 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
901 rc = -EINVAL;
902
903 return rc;
904 }
905
906 int wmi_rx_chain_del(struct wil6210_priv *wil)
907 {
908 int rc;
909 struct wmi_cfg_rx_chain_cmd cmd = {
910 .action = cpu_to_le32(WMI_RX_CHAIN_DEL),
911 .rx_sw_ring = {
912 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
913 },
914 };
915 struct {
916 struct wil6210_mbox_hdr_wmi wmi;
917 struct wmi_cfg_rx_chain_done_event cfg;
918 } __packed wmi_rx_cfg_reply;
919
920 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
921 WMI_CFG_RX_CHAIN_DONE_EVENTID,
922 &wmi_rx_cfg_reply, sizeof(wmi_rx_cfg_reply),
923 100);
924
925 return rc;
926 }
927
928 void wmi_event_flush(struct wil6210_priv *wil)
929 {
930 struct pending_wmi_event *evt, *t;
931
932 wil_dbg_wmi(wil, "%s()\n", __func__);
933
934 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
935 list_del(&evt->list);
936 kfree(evt);
937 }
938 }
939
940 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
941 void *d, int len)
942 {
943 uint i;
944
945 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
946 if (wmi_evt_handlers[i].eventid == id) {
947 wmi_evt_handlers[i].handler(wil, id, d, len);
948 return true;
949 }
950 }
951
952 return false;
953 }
954
955 static void wmi_event_handle(struct wil6210_priv *wil,
956 struct wil6210_mbox_hdr *hdr)
957 {
958 u16 len = le16_to_cpu(hdr->len);
959
960 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
961 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
962 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
963 void *evt_data = (void *)(&wmi[1]);
964 u16 id = le16_to_cpu(wmi->id);
965 /* check if someone waits for this event */
966 if (wil->reply_id && wil->reply_id == id) {
967 if (wil->reply_buf) {
968 memcpy(wil->reply_buf, wmi,
969 min(len, wil->reply_size));
970 } else {
971 wmi_evt_call_handler(wil, id, evt_data,
972 len - sizeof(*wmi));
973 }
974 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
975 complete(&wil->wmi_ready);
976 return;
977 }
978 /* unsolicited event */
979 /* search for handler */
980 if (!wmi_evt_call_handler(wil, id, evt_data,
981 len - sizeof(*wmi))) {
982 wil_err(wil, "Unhandled event 0x%04x\n", id);
983 }
984 } else {
985 wil_err(wil, "Unknown event type\n");
986 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
987 hdr, sizeof(*hdr) + len, true);
988 }
989 }
990
991 /*
992 * Retrieve next WMI event from the pending list
993 */
994 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
995 {
996 ulong flags;
997 struct list_head *ret = NULL;
998
999 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1000
1001 if (!list_empty(&wil->pending_wmi_ev)) {
1002 ret = wil->pending_wmi_ev.next;
1003 list_del(ret);
1004 }
1005
1006 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1007
1008 return ret;
1009 }
1010
1011 /*
1012 * Handler for the WMI events
1013 */
1014 void wmi_event_worker(struct work_struct *work)
1015 {
1016 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1017 wmi_event_worker);
1018 struct pending_wmi_event *evt;
1019 struct list_head *lh;
1020
1021 while ((lh = next_wmi_ev(wil)) != NULL) {
1022 evt = list_entry(lh, struct pending_wmi_event, list);
1023 wmi_event_handle(wil, &evt->event.hdr);
1024 kfree(evt);
1025 }
1026 }
1027
1028 void wmi_connect_worker(struct work_struct *work)
1029 {
1030 int rc;
1031 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1032 wmi_connect_worker);
1033
1034 if (wil->pending_connect_cid < 0) {
1035 wil_err(wil, "No connection pending\n");
1036 return;
1037 }
1038
1039 wil_dbg_wmi(wil, "Configure for connection CID %d\n",
1040 wil->pending_connect_cid);
1041
1042 rc = wil_vring_init_tx(wil, 0, WIL6210_TX_RING_SIZE,
1043 wil->pending_connect_cid, 0);
1044 wil->pending_connect_cid = -1;
1045 if (rc == 0)
1046 wil_link_on(wil);
1047 }
Linux kernel - Deliverables
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