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wil6210: headers clean-up
[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / wmi.c
CommitLineData
2be7d22f
VK		 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
2be7d22f 17#include <linux/etherdevice.h>
47e19af9 18#include <linux/if_arp.h>
2be7d22f
VK		 19
20#include "wil6210.h"
47e19af9 21#include "txrx.h"
2be7d22f
VK		 22#include "wmi.h"
23
24/**
25 * WMI event receiving - theory of operations
26 *
27 * When firmware about to report WMI event, it fills memory area
28 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
29 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
30 *
31 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the
32 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
33 * and handles events within the @wmi_event_worker. Every event get detached
34 * from list, processed and deleted.
35 *
36 * Purpose for this mechanism is to release IRQ thread; otherwise,
37 * if WMI event handling involves another WMI command flow, this 2-nd flow
38 * won't be completed because of blocked IRQ thread.
39 */
40
41/**
42 * Addressing - theory of operations
43 *
44 * There are several buses present on the WIL6210 card.
45 * Same memory areas are visible at different address on
46 * the different busses. There are 3 main bus masters:
47 * - MAC CPU (ucode)
48 * - User CPU (firmware)
49 * - AHB (host)
50 *
51 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
52 * AHB addresses starting from 0x880000
53 *
54 * Internally, firmware uses addresses that allows faster access but
55 * are invisible from the host. To read from these addresses, alternative
56 * AHB address must be used.
57 *
58 * Memory mapping
59 * Linker address PCI/Host address
60 * 0x880000 .. 0xa80000 2Mb BAR0
61 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM
62 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH
63 */
64
65/**
66 * @fw_mapping provides memory remapping table
67 */
68static const struct {
69 u32 from; /* linker address - from, inclusive */
70 u32 to; /* linker address - to, exclusive */
71 u32 host; /* PCI/Host address - BAR0 + 0x880000 */
72} fw_mapping[] = {
73 {0x000000, 0x040000, 0x8c0000}, /* FW code RAM 256k */
74 {0x800000, 0x808000, 0x900000}, /* FW data RAM 32k */
75 {0x840000, 0x860000, 0x908000}, /* peripheral data RAM 128k/96k used */
76 {0x880000, 0x88a000, 0x880000}, /* various RGF */
77 {0x8c0000, 0x932000, 0x8c0000}, /* trivial mapping for upper area */
78 /*
79 * 920000..930000 ucode code RAM
80 * 930000..932000 ucode data RAM
81 */
82};
83
84/**
85 * return AHB address for given firmware/ucode internal (linker) address
86 * @x - internal address
87 * If address have no valid AHB mapping, return 0
88 */
89static u32 wmi_addr_remap(u32 x)
90{
91 uint i;
92
93 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
94 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
95 return x + fw_mapping[i].host - fw_mapping[i].from;
96 }
97
98 return 0;
99}
100
101/**
102 * Check address validity for WMI buffer; remap if needed
103 * @ptr - internal (linker) fw/ucode address
104 *
105 * Valid buffer should be DWORD aligned
106 *
107 * return address for accessing buffer from the host;
108 * if buffer is not valid, return NULL.
109 */
110void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
111{
112 u32 off;
113 u32 ptr = le32_to_cpu(ptr_);
114
115 if (ptr % 4)
116 return NULL;
117
118 ptr = wmi_addr_remap(ptr);
119 if (ptr < WIL6210_FW_HOST_OFF)
120 return NULL;
121
122 off = HOSTADDR(ptr);
123 if (off > WIL6210_MEM_SIZE - 4)
124 return NULL;
125
126 return wil->csr + off;
127}
128
129/**
130 * Check address validity
131 */
132void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
133{
134 u32 off;
135
136 if (ptr % 4)
137 return NULL;
138
139 if (ptr < WIL6210_FW_HOST_OFF)
140 return NULL;
141
142 off = HOSTADDR(ptr);
143 if (off > WIL6210_MEM_SIZE - 4)
144 return NULL;
145
146 return wil->csr + off;
147}
148
149int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
150 struct wil6210_mbox_hdr *hdr)
151{
152 void __iomem *src = wmi_buffer(wil, ptr);
153 if (!src)
154 return -EINVAL;
155
156 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
157
158 return 0;
159}
160
161static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
162{
163 struct {
164 struct wil6210_mbox_hdr hdr;
165 struct wil6210_mbox_hdr_wmi wmi;
166 } __packed cmd = {
167 .hdr = {
168 .type = WIL_MBOX_HDR_TYPE_WMI,
169 .flags = 0,
170 .len = cpu_to_le16(sizeof(cmd.wmi) + len),
171 },
172 .wmi = {
173 .id = cpu_to_le16(cmdid),
174 .info1 = 0,
175 },
176 };
177 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
178 struct wil6210_mbox_ring_desc d_head;
179 u32 next_head;
180 void __iomem *dst;
181 void __iomem *head = wmi_addr(wil, r->head);
182 uint retry;
183
184 if (sizeof(cmd) + len > r->entry_size) {
185 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
186 (int)(sizeof(cmd) + len), r->entry_size);
187 return -ERANGE;
2be7d22f
VK		 188 }
189
190 might_sleep();
191
192 if (!test_bit(wil_status_fwready, &wil->status)) {
193 wil_err(wil, "FW not ready\n");
194 return -EAGAIN;
195 }
196
197 if (!head) {
198 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
199 return -EINVAL;
200 }
201 /* read Tx head till it is not busy */
202 for (retry = 5; retry > 0; retry--) {
203 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
204 if (d_head.sync == 0)
205 break;
206 msleep(20);
207 }
208 if (d_head.sync != 0) {
209 wil_err(wil, "WMI head busy\n");
210 return -EBUSY;
211 }
212 /* next head */
213 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
7743882d 214 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
2be7d22f
VK		 215 /* wait till FW finish with previous command */
216 for (retry = 5; retry > 0; retry--) {
217 r->tail = ioread32(wil->csr + HOST_MBOX +
218 offsetof(struct wil6210_mbox_ctl, tx.tail));
219 if (next_head != r->tail)
220 break;
221 msleep(20);
222 }
223 if (next_head == r->tail) {
224 wil_err(wil, "WMI ring full\n");
225 return -EBUSY;
226 }
227 dst = wmi_buffer(wil, d_head.addr);
228 if (!dst) {
229 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
230 le32_to_cpu(d_head.addr));
231 return -EINVAL;
232 }
233 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
234 /* set command */
7743882d
VK		 235 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
236 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
2be7d22f 237 sizeof(cmd), true);
7743882d 238 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
2be7d22f
VK		 239 len, true);
240 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
241 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
242 /* mark entry as full */
243 iowrite32(1, wil->csr + HOSTADDR(r->head) +
244 offsetof(struct wil6210_mbox_ring_desc, sync));
245 /* advance next ptr */
246 iowrite32(r->head = next_head, wil->csr + HOST_MBOX +
247 offsetof(struct wil6210_mbox_ctl, tx.head));
248
249 /* interrupt to FW */
250 iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT);
251
252 return 0;
253}
254
255int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
256{
257 int rc;
258
259 mutex_lock(&wil->wmi_mutex);
260 rc = __wmi_send(wil, cmdid, buf, len);
261 mutex_unlock(&wil->wmi_mutex);
262
263 return rc;
264}
265
266/*=== Event handlers ===*/
267static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
268{
269 struct net_device *ndev = wil_to_ndev(wil);
270 struct wireless_dev *wdev = wil->wdev;
271 struct wmi_ready_event *evt = d;
272 u32 ver = le32_to_cpu(evt->sw_version);
273
7743882d 274 wil_dbg_wmi(wil, "FW ver. %d; MAC %pM\n", ver, evt->mac);
2be7d22f
VK		 275
276 if (!is_valid_ether_addr(ndev->dev_addr)) {
277 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
278 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
279 }
280 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
281 "%d", ver);
282}
283
284static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
285 int len)
286{
7743882d 287 wil_dbg_wmi(wil, "WMI: FW ready\n");
2be7d22f
VK		 288
289 set_bit(wil_status_fwready, &wil->status);
290 /* reuse wmi_ready for the firmware ready indication */
291 complete(&wil->wmi_ready);
292}
293
294static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
295{
296 struct wmi_rx_mgmt_packet_event *data = d;
297 struct wiphy *wiphy = wil_to_wiphy(wil);
298 struct ieee80211_mgmt *rx_mgmt_frame =
299 (struct ieee80211_mgmt *)data->payload;
300 int ch_no = data->info.channel+1;
301 u32 freq = ieee80211_channel_to_frequency(ch_no,
302 IEEE80211_BAND_60GHZ);
303 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
304 /* TODO convert LE to CPU */
305 s32 signal = 0; /* TODO */
306 __le16 fc = rx_mgmt_frame->frame_control;
307 u32 d_len = le32_to_cpu(data->info.len);
308 u16 d_status = le16_to_cpu(data->info.status);
309
7743882d 310 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d\n",
2be7d22f 311 data->info.channel, data->info.mcs, data->info.snr);
7743882d 312 wil_dbg_wmi(wil, "status 0x%04x len %d stype %04x\n", d_status, d_len,
2be7d22f 313 le16_to_cpu(data->info.stype));
7743882d 314 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
2be7d22f
VK		 315 data->info.qid, data->info.mid, data->info.cid);
316
317 if (!channel) {
318 wil_err(wil, "Frame on unsupported channel\n");
319 return;
320 }
321
322 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
323 struct cfg80211_bss *bss;
a0f7845b
VK		 324
325 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
326 d_len, signal, GFP_KERNEL);
2be7d22f 327 if (bss) {
7743882d 328 wil_dbg_wmi(wil, "Added BSS %pM\n",
2be7d22f 329 rx_mgmt_frame->bssid);
5b112d3d 330 cfg80211_put_bss(wiphy, bss);
2be7d22f
VK		 331 } else {
332 wil_err(wil, "cfg80211_inform_bss() failed\n");
333 }
102b1d99
VK		 334 } else {
335 cfg80211_rx_mgmt(wil->wdev, freq, signal,
336 (void *)rx_mgmt_frame, d_len, GFP_KERNEL);
2be7d22f
VK		 337 }
338}
339
340static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
341 void *d, int len)
342{
343 if (wil->scan_request) {
344 struct wmi_scan_complete_event *data = d;
345 bool aborted = (data->status != 0);
346
7743882d 347 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
2be7d22f
VK		 348 cfg80211_scan_done(wil->scan_request, aborted);
349 wil->scan_request = NULL;
350 } else {
351 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
352 }
353}
354
355static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
356{
357 struct net_device *ndev = wil_to_ndev(wil);
358 struct wireless_dev *wdev = wil->wdev;
359 struct wmi_connect_event *evt = d;
360 int ch; /* channel number */
361 struct station_info sinfo;
362 u8 *assoc_req_ie, *assoc_resp_ie;
363 size_t assoc_req_ielen, assoc_resp_ielen;
364 /* capinfo(u16) + listen_interval(u16) + IEs */
365 const size_t assoc_req_ie_offset = sizeof(u16) * 2;
366 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
367 const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
368
369 if (len < sizeof(*evt)) {
370 wil_err(wil, "Connect event too short : %d bytes\n", len);
371 return;
372 }
373 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
374 evt->assoc_resp_len) {
375 wil_err(wil,
376 "Connect event corrupted : %d != %d + %d + %d + %d\n",
377 len, (int)sizeof(*evt), evt->beacon_ie_len,
378 evt->assoc_req_len, evt->assoc_resp_len);
379 return;
380 }
381 ch = evt->channel + 1;
7743882d 382 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
2be7d22f 383 evt->bssid, ch, evt->cid);
7743882d 384 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
2be7d22f
VK		 385 evt->assoc_info, len - sizeof(*evt), true);
386
387 /* figure out IE's */
388 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
389 assoc_req_ie_offset];
390 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
391 if (evt->assoc_req_len <= assoc_req_ie_offset) {
392 assoc_req_ie = NULL;
393 assoc_req_ielen = 0;
394 }
395
396 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
397 evt->assoc_req_len +
398 assoc_resp_ie_offset];
399 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
400 if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
401 assoc_resp_ie = NULL;
402 assoc_resp_ielen = 0;
403 }
404
405 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
406 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
407 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
408 wil_err(wil, "Not in connecting state\n");
409 return;
410 }
411 del_timer_sync(&wil->connect_timer);
412 cfg80211_connect_result(ndev, evt->bssid,
413 assoc_req_ie, assoc_req_ielen,
414 assoc_resp_ie, assoc_resp_ielen,
415 WLAN_STATUS_SUCCESS, GFP_KERNEL);
416
417 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
418 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
419 memset(&sinfo, 0, sizeof(sinfo));
420
421 sinfo.generation = wil->sinfo_gen++;
422
423 if (assoc_req_ie) {
424 sinfo.assoc_req_ies = assoc_req_ie;
425 sinfo.assoc_req_ies_len = assoc_req_ielen;
426 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
427 }
428
429 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
430 }
431 set_bit(wil_status_fwconnected, &wil->status);
432
433 /* FIXME FW can transmit only ucast frames to peer */
434 /* FIXME real ring_id instead of hard coded 0 */
435 memcpy(wil->dst_addr[0], evt->bssid, ETH_ALEN);
436
437 wil->pending_connect_cid = evt->cid;
d81079f1 438 queue_work(wil->wmi_wq_conn, &wil->connect_worker);
2be7d22f
VK		 439}
440
441static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
442 void *d, int len)
443{
444 struct wmi_disconnect_event *evt = d;
445
7743882d 446 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
2be7d22f
VK		 447 evt->bssid,
448 evt->protocol_reason_status, evt->disconnect_reason);
449
450 wil->sinfo_gen++;
451
452 wil6210_disconnect(wil, evt->bssid);
2be7d22f
VK		 453}
454
455static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len)
456{
457 struct wmi_notify_req_done_event *evt = d;
458
459 if (len < sizeof(*evt)) {
460 wil_err(wil, "Short NOTIFY event\n");
461 return;
462 }
463
464 wil->stats.tsf = le64_to_cpu(evt->tsf);
465 wil->stats.snr = le32_to_cpu(evt->snr_val);
466 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs);
467 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector);
468 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector);
469 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector);
470 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector);
7743882d 471 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n"
2be7d22f
VK		 472 "BF status 0x%08x SNR 0x%08x\n"
473 "Tx Tpt %d goodput %d Rx goodput %d\n"
474 "Sectors(rx:tx) my %d:%d peer %d:%d\n",
475 wil->stats.bf_mcs, wil->stats.tsf, evt->status,
476 wil->stats.snr, le32_to_cpu(evt->tx_tpt),
477 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput),
478 wil->stats.my_rx_sector, wil->stats.my_tx_sector,
479 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector);
480}
481
482/*
483 * Firmware reports EAPOL frame using WME event.
484 * Reconstruct Ethernet frame and deliver it via normal Rx
485 */
486static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
487 void *d, int len)
488{
489 struct net_device *ndev = wil_to_ndev(wil);
490 struct wmi_eapol_rx_event *evt = d;
491 u16 eapol_len = le16_to_cpu(evt->eapol_len);
492 int sz = eapol_len + ETH_HLEN;
493 struct sk_buff *skb;
494 struct ethhdr *eth;
495
7743882d 496 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
2be7d22f
VK		 497 evt->src_mac);
498
499 if (eapol_len > 196) { /* TODO: revisit size limit */
500 wil_err(wil, "EAPOL too large\n");
501 return;
502 }
503
504 skb = alloc_skb(sz, GFP_KERNEL);
505 if (!skb) {
506 wil_err(wil, "Failed to allocate skb\n");
507 return;
508 }
509 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
510 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
511 memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
512 eth->h_proto = cpu_to_be16(ETH_P_PAE);
513 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
514 skb->protocol = eth_type_trans(skb, ndev);
515 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
516 ndev->stats.rx_packets++;
517 ndev->stats.rx_bytes += skb->len;
518 } else {
519 ndev->stats.rx_dropped++;
520 }
521}
522
3442a504
VK		 523static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len)
524{
525 struct net_device *ndev = wil_to_ndev(wil);
526 struct wmi_data_port_open_event *evt = d;
527
528 wil_dbg_wmi(wil, "Link UP for CID %d\n", evt->cid);
529
530 netif_carrier_on(ndev);
531}
532
533static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len)
534{
535 struct net_device *ndev = wil_to_ndev(wil);
536 struct wmi_wbe_link_down_event *evt = d;
537
538 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n",
539 evt->cid, le32_to_cpu(evt->reason));
540
541 netif_carrier_off(ndev);
542}
543
249a382b
VK		 544static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
545 int len)
546{
547 struct wmi_vring_ba_status_event *evt = d;
548
549 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n",
550 evt->ringid, evt->status ? "N/A" : "OK", evt->agg_wsize,
551 __le16_to_cpu(evt->ba_timeout));
552}
553
2be7d22f
VK		 554static const struct {
555 int eventid;
556 void (*handler)(struct wil6210_priv *wil, int eventid,
557 void *data, int data_len);
558} wmi_evt_handlers[] = {
559 {WMI_READY_EVENTID, wmi_evt_ready},
560 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready},
561 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt},
562 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete},
563 {WMI_CONNECT_EVENTID, wmi_evt_connect},
564 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect},
565 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify},
566 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
3442a504
VK		 567 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup},
568 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown},
249a382b 569 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status},
2be7d22f
VK		 570};
571
572/*
573 * Run in IRQ context
574 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
575 * that will be eventually handled by the @wmi_event_worker in the thread
576 * context of thread "wil6210_wmi"
577 */
578void wmi_recv_cmd(struct wil6210_priv *wil)
579{
580 struct wil6210_mbox_ring_desc d_tail;
581 struct wil6210_mbox_hdr hdr;
582 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
583 struct pending_wmi_event *evt;
584 u8 *cmd;
585 void __iomem *src;
586 ulong flags;
587
588 for (;;) {
589 u16 len;
590
591 r->head = ioread32(wil->csr + HOST_MBOX +
592 offsetof(struct wil6210_mbox_ctl, rx.head));
593 if (r->tail == r->head)
594 return;
595
596 /* read cmd from tail */
597 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
598 sizeof(struct wil6210_mbox_ring_desc));
599 if (d_tail.sync == 0) {
600 wil_err(wil, "Mbox evt not owned by FW?\n");
601 return;
602 }
603
604 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
605 wil_err(wil, "Mbox evt at 0x%08x?\n",
606 le32_to_cpu(d_tail.addr));
607 return;
608 }
609
610 len = le16_to_cpu(hdr.len);
611 src = wmi_buffer(wil, d_tail.addr) +
612 sizeof(struct wil6210_mbox_hdr);
613 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
614 event.wmi) + len, 4),
615 GFP_KERNEL);
14f8dc49 616 if (!evt)
2be7d22f 617 return;
14f8dc49 618
2be7d22f
VK		 619 evt->event.hdr = hdr;
620 cmd = (void *)&evt->event.wmi;
621 wil_memcpy_fromio_32(cmd, src, len);
622 /* mark entry as empty */
623 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
624 offsetof(struct wil6210_mbox_ring_desc, sync));
625 /* indicate */
7743882d 626 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
2be7d22f
VK		 627 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
628 hdr.flags);
629 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
630 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
7743882d 631 wil_dbg_wmi(wil, "WMI event 0x%04x\n",
2be7d22f
VK		 632 evt->event.wmi.id);
633 }
7743882d 634 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
2be7d22f
VK		 635 &evt->event.hdr, sizeof(hdr) + len, true);
636
637 /* advance tail */
638 r->tail = r->base + ((r->tail - r->base +
639 sizeof(struct wil6210_mbox_ring_desc)) % r->size);
640 iowrite32(r->tail, wil->csr + HOST_MBOX +
641 offsetof(struct wil6210_mbox_ctl, rx.tail));
642
643 /* add to the pending list */
644 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
645 list_add_tail(&evt->list, &wil->pending_wmi_ev);
646 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
647 {
648 int q = queue_work(wil->wmi_wq,
649 &wil->wmi_event_worker);
7743882d 650 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
2be7d22f
VK		 651 }
652 }
653}
654
655int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
656 u16 reply_id, void *reply, u8 reply_size, int to_msec)
657{
658 int rc;
659 int remain;
660
661 mutex_lock(&wil->wmi_mutex);
662
663 rc = __wmi_send(wil, cmdid, buf, len);
664 if (rc)
665 goto out;
666
667 wil->reply_id = reply_id;
668 wil->reply_buf = reply;
669 wil->reply_size = reply_size;
670 remain = wait_for_completion_timeout(&wil->wmi_ready,
671 msecs_to_jiffies(to_msec));
672 if (0 == remain) {
673 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
674 cmdid, reply_id, to_msec);
675 rc = -ETIME;
676 } else {
7743882d 677 wil_dbg_wmi(wil,
2be7d22f
VK		 678 "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
679 cmdid, reply_id,
680 to_msec - jiffies_to_msecs(remain));
681 }
682 wil->reply_id = 0;
683 wil->reply_buf = NULL;
684 wil->reply_size = 0;
685 out:
686 mutex_unlock(&wil->wmi_mutex);
687
688 return rc;
689}
690
691int wmi_echo(struct wil6210_priv *wil)
692{
693 struct wmi_echo_cmd cmd = {
694 .value = cpu_to_le32(0x12345678),
695 };
696
697 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
698 WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
699}
700
701int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
702{
703 struct wmi_set_mac_address_cmd cmd;
704
705 memcpy(cmd.mac, addr, ETH_ALEN);
706
7743882d 707 wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
2be7d22f
VK		 708
709 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
710}
711
712int wmi_set_bcon(struct wil6210_priv *wil, int bi, u8 wmi_nettype)
713{
714 struct wmi_bcon_ctrl_cmd cmd = {
715 .bcon_interval = cpu_to_le16(bi),
716 .network_type = wmi_nettype,
717 .disable_sec_offload = 1,
718 };
719
720 if (!wil->secure_pcp)
721 cmd.disable_sec = 1;
722
723 return wmi_send(wil, WMI_BCON_CTRL_CMDID, &cmd, sizeof(cmd));
724}
725
726int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
727{
728 struct wmi_set_ssid_cmd cmd = {
729 .ssid_len = cpu_to_le32(ssid_len),
730 };
731
732 if (ssid_len > sizeof(cmd.ssid))
733 return -EINVAL;
734
735 memcpy(cmd.ssid, ssid, ssid_len);
736
737 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
738}
739
740int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
741{
742 int rc;
743 struct {
744 struct wil6210_mbox_hdr_wmi wmi;
745 struct wmi_set_ssid_cmd cmd;
746 } __packed reply;
747 int len; /* reply.cmd.ssid_len in CPU order */
748
749 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
750 &reply, sizeof(reply), 20);
751 if (rc)
752 return rc;
753
754 len = le32_to_cpu(reply.cmd.ssid_len);
755 if (len > sizeof(reply.cmd.ssid))
756 return -EINVAL;
757
758 *ssid_len = len;
759 memcpy(ssid, reply.cmd.ssid, len);
760
761 return 0;
762}
763
764int wmi_set_channel(struct wil6210_priv *wil, int channel)
765{
766 struct wmi_set_pcp_channel_cmd cmd = {
767 .channel = channel - 1,
768 };
769
770 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
771}
772
773int wmi_get_channel(struct wil6210_priv *wil, int *channel)
774{
775 int rc;
776 struct {
777 struct wil6210_mbox_hdr_wmi wmi;
778 struct wmi_set_pcp_channel_cmd cmd;
779 } __packed reply;
780
781 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
782 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
783 if (rc)
784 return rc;
785
786 if (reply.cmd.channel > 3)
787 return -EINVAL;
788
789 *channel = reply.cmd.channel + 1;
790
791 return 0;
792}
793
794int wmi_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb)
795{
796 struct wmi_eapol_tx_cmd *cmd;
797 struct ethhdr *eth;
798 u16 eapol_len = skb->len - ETH_HLEN;
799 void *eapol = skb->data + ETH_HLEN;
800 uint i;
801 int rc;
802
803 skb_set_mac_header(skb, 0);
804 eth = eth_hdr(skb);
7743882d 805 wil_dbg_wmi(wil, "EAPOL %d bytes to %pM\n", eapol_len, eth->h_dest);
2be7d22f
VK		 806 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
807 if (memcmp(wil->dst_addr[i], eth->h_dest, ETH_ALEN) == 0)
808 goto found_dest;
809 }
810
811 return -EINVAL;
812
813 found_dest:
814 /* find out eapol data & len */
815 cmd = kzalloc(sizeof(*cmd) + eapol_len, GFP_KERNEL);
816 if (!cmd)
817 return -EINVAL;
818
819 memcpy(cmd->dst_mac, eth->h_dest, ETH_ALEN);
820 cmd->eapol_len = cpu_to_le16(eapol_len);
821 memcpy(cmd->eapol, eapol, eapol_len);
822 rc = wmi_send(wil, WMI_EAPOL_TX_CMDID, cmd, sizeof(*cmd) + eapol_len);
823 kfree(cmd);
824
825 return rc;
826}
827
828int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
829 const void *mac_addr)
830{
831 struct wmi_delete_cipher_key_cmd cmd = {
832 .key_index = key_index,
833 };
834
835 if (mac_addr)
836 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
837
838 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
839}
840
841int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
842 const void *mac_addr, int key_len, const void *key)
843{
844 struct wmi_add_cipher_key_cmd cmd = {
845 .key_index = key_index,
846 .key_usage = WMI_KEY_USE_PAIRWISE,
847 .key_len = key_len,
848 };
849
850 if (!key || (key_len > sizeof(cmd.key)))
851 return -EINVAL;
852
853 memcpy(cmd.key, key, key_len);
854 if (mac_addr)
855 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
856
857 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
858}
859
860int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
861{
862 int rc;
863 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
864 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
14f8dc49 865 if (!cmd)
2be7d22f 866 return -ENOMEM;
2be7d22f
VK		 867
868 cmd->mgmt_frm_type = type;
869 /* BUG: FW API define ieLen as u8. Will fix FW */
870 cmd->ie_len = cpu_to_le16(ie_len);
871 memcpy(cmd->ie_info, ie, ie_len);
03866e7d 872 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
2be7d22f
VK		 873 kfree(cmd);
874
875 return rc;
876}
877
47e19af9
VK		 878int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
879{
880 struct wireless_dev *wdev = wil->wdev;
881 struct net_device *ndev = wil_to_ndev(wil);
882 struct wmi_cfg_rx_chain_cmd cmd = {
883 .action = WMI_RX_CHAIN_ADD,
884 .rx_sw_ring = {
885 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
886 .ring_mem_base = cpu_to_le64(vring->pa),
887 .ring_size = cpu_to_le16(vring->size),
888 },
889 .mid = 0, /* TODO - what is it? */
890 .decap_trans_type = WMI_DECAP_TYPE_802_3,
891 };
892 struct {
893 struct wil6210_mbox_hdr_wmi wmi;
894 struct wmi_cfg_rx_chain_done_event evt;
895 } __packed evt;
896 int rc;
897
898 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
899 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
900
901 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
902 if (ch)
903 cmd.sniffer_cfg.channel = ch->hw_value - 1;
904 cmd.sniffer_cfg.phy_info_mode =
905 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
906 cmd.sniffer_cfg.phy_support =
907 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
908 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
909 }
910 /* typical time for secure PCP is 840ms */
911 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
912 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
913 if (rc)
914 return rc;
915
916 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
917
7743882d 918 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
47e19af9
VK		 919 le32_to_cpu(evt.evt.status), vring->hwtail);
920
921 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
922 rc = -EINVAL;
923
924 return rc;
925}
926
2be7d22f
VK		 927void wmi_event_flush(struct wil6210_priv *wil)
928{
929 struct pending_wmi_event *evt, *t;
930
7743882d 931 wil_dbg_wmi(wil, "%s()\n", __func__);
2be7d22f
VK		 932
933 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
934 list_del(&evt->list);
935 kfree(evt);
936 }
937}
938
939static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
940 void *d, int len)
941{
942 uint i;
943
944 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
945 if (wmi_evt_handlers[i].eventid == id) {
946 wmi_evt_handlers[i].handler(wil, id, d, len);
947 return true;
948 }
949 }
950
951 return false;
952}
953
954static void wmi_event_handle(struct wil6210_priv *wil,
955 struct wil6210_mbox_hdr *hdr)
956{
957 u16 len = le16_to_cpu(hdr->len);
958
959 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
960 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
961 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
962 void *evt_data = (void *)(&wmi[1]);
963 u16 id = le16_to_cpu(wmi->id);
964 /* check if someone waits for this event */
965 if (wil->reply_id && wil->reply_id == id) {
966 if (wil->reply_buf) {
967 memcpy(wil->reply_buf, wmi,
968 min(len, wil->reply_size));
969 } else {
970 wmi_evt_call_handler(wil, id, evt_data,
971 len - sizeof(*wmi));
972 }
7743882d 973 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
2be7d22f
VK		 974 complete(&wil->wmi_ready);
975 return;
976 }
977 /* unsolicited event */
978 /* search for handler */
979 if (!wmi_evt_call_handler(wil, id, evt_data,
980 len - sizeof(*wmi))) {
981 wil_err(wil, "Unhandled event 0x%04x\n", id);
982 }
983 } else {
984 wil_err(wil, "Unknown event type\n");
985 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
986 hdr, sizeof(*hdr) + len, true);
987 }
988}
989
990/*
991 * Retrieve next WMI event from the pending list
992 */
993static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
994{
995 ulong flags;
996 struct list_head *ret = NULL;
997
998 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
999
1000 if (!list_empty(&wil->pending_wmi_ev)) {
1001 ret = wil->pending_wmi_ev.next;
1002 list_del(ret);
1003 }
1004
1005 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1006
1007 return ret;
1008}
1009
1010/*
1011 * Handler for the WMI events
1012 */
1013void wmi_event_worker(struct work_struct *work)
1014{
1015 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1016 wmi_event_worker);
1017 struct pending_wmi_event *evt;
1018 struct list_head *lh;
1019
1020 while ((lh = next_wmi_ev(wil)) != NULL) {
1021 evt = list_entry(lh, struct pending_wmi_event, list);
1022 wmi_event_handle(wil, &evt->event.hdr);
1023 kfree(evt);
1024 }
1025}
Linux kernel - Deliverables
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