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wil6210: sync with new firmware
[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;
b8023177
VK		 272 wil->fw_version = le32_to_cpu(evt->sw_version);
273 wil->n_mids = evt->numof_additional_mids;
2be7d22f 274
b8023177
VK		 275 wil_dbg_wmi(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
276 evt->mac, wil->n_mids);
2be7d22f
VK		 277
278 if (!is_valid_ether_addr(ndev->dev_addr)) {
279 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
280 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
281 }
282 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
b8023177 283 "%d", wil->fw_version);
2be7d22f
VK		 284}
285
286static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
287 int len)
288{
7743882d 289 wil_dbg_wmi(wil, "WMI: FW ready\n");
2be7d22f
VK		 290
291 set_bit(wil_status_fwready, &wil->status);
292 /* reuse wmi_ready for the firmware ready indication */
293 complete(&wil->wmi_ready);
294}
295
296static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
297{
298 struct wmi_rx_mgmt_packet_event *data = d;
299 struct wiphy *wiphy = wil_to_wiphy(wil);
300 struct ieee80211_mgmt *rx_mgmt_frame =
301 (struct ieee80211_mgmt *)data->payload;
302 int ch_no = data->info.channel+1;
303 u32 freq = ieee80211_channel_to_frequency(ch_no,
304 IEEE80211_BAND_60GHZ);
305 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
306 /* TODO convert LE to CPU */
307 s32 signal = 0; /* TODO */
308 __le16 fc = rx_mgmt_frame->frame_control;
309 u32 d_len = le32_to_cpu(data->info.len);
310 u16 d_status = le16_to_cpu(data->info.status);
311
7743882d 312 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d\n",
2be7d22f 313 data->info.channel, data->info.mcs, data->info.snr);
7743882d 314 wil_dbg_wmi(wil, "status 0x%04x len %d stype %04x\n", d_status, d_len,
2be7d22f 315 le16_to_cpu(data->info.stype));
7743882d 316 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
2be7d22f
VK		 317 data->info.qid, data->info.mid, data->info.cid);
318
319 if (!channel) {
320 wil_err(wil, "Frame on unsupported channel\n");
321 return;
322 }
323
324 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
325 struct cfg80211_bss *bss;
a0f7845b
VK		 326
327 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
328 d_len, signal, GFP_KERNEL);
2be7d22f 329 if (bss) {
7743882d 330 wil_dbg_wmi(wil, "Added BSS %pM\n",
2be7d22f 331 rx_mgmt_frame->bssid);
5b112d3d 332 cfg80211_put_bss(wiphy, bss);
2be7d22f
VK		 333 } else {
334 wil_err(wil, "cfg80211_inform_bss() failed\n");
335 }
102b1d99
VK		 336 } else {
337 cfg80211_rx_mgmt(wil->wdev, freq, signal,
338 (void *)rx_mgmt_frame, d_len, GFP_KERNEL);
2be7d22f
VK		 339 }
340}
341
342static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
343 void *d, int len)
344{
345 if (wil->scan_request) {
346 struct wmi_scan_complete_event *data = d;
347 bool aborted = (data->status != 0);
348
7743882d 349 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
2be7d22f
VK		 350 cfg80211_scan_done(wil->scan_request, aborted);
351 wil->scan_request = NULL;
352 } else {
353 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
354 }
355}
356
357static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
358{
359 struct net_device *ndev = wil_to_ndev(wil);
360 struct wireless_dev *wdev = wil->wdev;
361 struct wmi_connect_event *evt = d;
362 int ch; /* channel number */
363 struct station_info sinfo;
364 u8 *assoc_req_ie, *assoc_resp_ie;
365 size_t assoc_req_ielen, assoc_resp_ielen;
366 /* capinfo(u16) + listen_interval(u16) + IEs */
367 const size_t assoc_req_ie_offset = sizeof(u16) * 2;
368 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
369 const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
370
371 if (len < sizeof(*evt)) {
372 wil_err(wil, "Connect event too short : %d bytes\n", len);
373 return;
374 }
375 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
376 evt->assoc_resp_len) {
377 wil_err(wil,
378 "Connect event corrupted : %d != %d + %d + %d + %d\n",
379 len, (int)sizeof(*evt), evt->beacon_ie_len,
380 evt->assoc_req_len, evt->assoc_resp_len);
381 return;
382 }
383 ch = evt->channel + 1;
7743882d 384 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
2be7d22f 385 evt->bssid, ch, evt->cid);
7743882d 386 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
2be7d22f
VK		 387 evt->assoc_info, len - sizeof(*evt), true);
388
389 /* figure out IE's */
390 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
391 assoc_req_ie_offset];
392 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
393 if (evt->assoc_req_len <= assoc_req_ie_offset) {
394 assoc_req_ie = NULL;
395 assoc_req_ielen = 0;
396 }
397
398 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
399 evt->assoc_req_len +
400 assoc_resp_ie_offset];
401 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
402 if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
403 assoc_resp_ie = NULL;
404 assoc_resp_ielen = 0;
405 }
406
407 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
408 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
409 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
410 wil_err(wil, "Not in connecting state\n");
411 return;
412 }
413 del_timer_sync(&wil->connect_timer);
414 cfg80211_connect_result(ndev, evt->bssid,
415 assoc_req_ie, assoc_req_ielen,
416 assoc_resp_ie, assoc_resp_ielen,
417 WLAN_STATUS_SUCCESS, GFP_KERNEL);
418
419 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
420 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
421 memset(&sinfo, 0, sizeof(sinfo));
422
423 sinfo.generation = wil->sinfo_gen++;
424
425 if (assoc_req_ie) {
426 sinfo.assoc_req_ies = assoc_req_ie;
427 sinfo.assoc_req_ies_len = assoc_req_ielen;
428 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
429 }
430
431 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
432 }
433 set_bit(wil_status_fwconnected, &wil->status);
434
435 /* FIXME FW can transmit only ucast frames to peer */
436 /* FIXME real ring_id instead of hard coded 0 */
437 memcpy(wil->dst_addr[0], evt->bssid, ETH_ALEN);
438
439 wil->pending_connect_cid = evt->cid;
d81079f1 440 queue_work(wil->wmi_wq_conn, &wil->connect_worker);
2be7d22f
VK		 441}
442
443static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
444 void *d, int len)
445{
446 struct wmi_disconnect_event *evt = d;
447
7743882d 448 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
2be7d22f
VK		 449 evt->bssid,
450 evt->protocol_reason_status, evt->disconnect_reason);
451
452 wil->sinfo_gen++;
453
454 wil6210_disconnect(wil, evt->bssid);
2be7d22f
VK		 455}
456
457static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len)
458{
459 struct wmi_notify_req_done_event *evt = d;
460
461 if (len < sizeof(*evt)) {
462 wil_err(wil, "Short NOTIFY event\n");
463 return;
464 }
465
466 wil->stats.tsf = le64_to_cpu(evt->tsf);
467 wil->stats.snr = le32_to_cpu(evt->snr_val);
468 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs);
469 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector);
470 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector);
471 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector);
472 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector);
7743882d 473 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n"
2be7d22f
VK		 474 "BF status 0x%08x SNR 0x%08x\n"
475 "Tx Tpt %d goodput %d Rx goodput %d\n"
476 "Sectors(rx:tx) my %d:%d peer %d:%d\n",
477 wil->stats.bf_mcs, wil->stats.tsf, evt->status,
478 wil->stats.snr, le32_to_cpu(evt->tx_tpt),
479 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput),
480 wil->stats.my_rx_sector, wil->stats.my_tx_sector,
481 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector);
482}
483
484/*
485 * Firmware reports EAPOL frame using WME event.
486 * Reconstruct Ethernet frame and deliver it via normal Rx
487 */
488static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
489 void *d, int len)
490{
491 struct net_device *ndev = wil_to_ndev(wil);
492 struct wmi_eapol_rx_event *evt = d;
493 u16 eapol_len = le16_to_cpu(evt->eapol_len);
494 int sz = eapol_len + ETH_HLEN;
495 struct sk_buff *skb;
496 struct ethhdr *eth;
497
7743882d 498 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
2be7d22f
VK		 499 evt->src_mac);
500
501 if (eapol_len > 196) { /* TODO: revisit size limit */
502 wil_err(wil, "EAPOL too large\n");
503 return;
504 }
505
506 skb = alloc_skb(sz, GFP_KERNEL);
507 if (!skb) {
508 wil_err(wil, "Failed to allocate skb\n");
509 return;
510 }
511 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
512 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
513 memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
514 eth->h_proto = cpu_to_be16(ETH_P_PAE);
515 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
516 skb->protocol = eth_type_trans(skb, ndev);
517 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
518 ndev->stats.rx_packets++;
519 ndev->stats.rx_bytes += skb->len;
520 } else {
521 ndev->stats.rx_dropped++;
522 }
523}
524
3442a504
VK		 525static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len)
526{
527 struct net_device *ndev = wil_to_ndev(wil);
528 struct wmi_data_port_open_event *evt = d;
529
530 wil_dbg_wmi(wil, "Link UP for CID %d\n", evt->cid);
531
532 netif_carrier_on(ndev);
533}
534
535static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len)
536{
537 struct net_device *ndev = wil_to_ndev(wil);
538 struct wmi_wbe_link_down_event *evt = d;
539
540 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n",
541 evt->cid, le32_to_cpu(evt->reason));
542
543 netif_carrier_off(ndev);
544}
545
249a382b
VK		 546static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
547 int len)
548{
549 struct wmi_vring_ba_status_event *evt = d;
550
551 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n",
552 evt->ringid, evt->status ? "N/A" : "OK", evt->agg_wsize,
553 __le16_to_cpu(evt->ba_timeout));
554}
555
2be7d22f
VK		 556static const struct {
557 int eventid;
558 void (*handler)(struct wil6210_priv *wil, int eventid,
559 void *data, int data_len);
560} wmi_evt_handlers[] = {
561 {WMI_READY_EVENTID, wmi_evt_ready},
562 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready},
563 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt},
564 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete},
565 {WMI_CONNECT_EVENTID, wmi_evt_connect},
566 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect},
567 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify},
568 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
3442a504
VK		 569 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup},
570 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown},
249a382b 571 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status},
2be7d22f
VK		 572};
573
574/*
575 * Run in IRQ context
576 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
577 * that will be eventually handled by the @wmi_event_worker in the thread
578 * context of thread "wil6210_wmi"
579 */
580void wmi_recv_cmd(struct wil6210_priv *wil)
581{
582 struct wil6210_mbox_ring_desc d_tail;
583 struct wil6210_mbox_hdr hdr;
584 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
585 struct pending_wmi_event *evt;
586 u8 *cmd;
587 void __iomem *src;
588 ulong flags;
589
55f7acdd
VK		 590 if (!test_bit(wil_status_reset_done, &wil->status)) {
591 wil_err(wil, "Reset not completed\n");
592 return;
593 }
594
2be7d22f
VK		 595 for (;;) {
596 u16 len;
597
598 r->head = ioread32(wil->csr + HOST_MBOX +
599 offsetof(struct wil6210_mbox_ctl, rx.head));
600 if (r->tail == r->head)
601 return;
602
603 /* read cmd from tail */
604 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
605 sizeof(struct wil6210_mbox_ring_desc));
606 if (d_tail.sync == 0) {
607 wil_err(wil, "Mbox evt not owned by FW?\n");
608 return;
609 }
610
611 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
612 wil_err(wil, "Mbox evt at 0x%08x?\n",
613 le32_to_cpu(d_tail.addr));
614 return;
615 }
616
617 len = le16_to_cpu(hdr.len);
618 src = wmi_buffer(wil, d_tail.addr) +
619 sizeof(struct wil6210_mbox_hdr);
620 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
621 event.wmi) + len, 4),
622 GFP_KERNEL);
14f8dc49 623 if (!evt)
2be7d22f 624 return;
14f8dc49 625
2be7d22f
VK		 626 evt->event.hdr = hdr;
627 cmd = (void *)&evt->event.wmi;
628 wil_memcpy_fromio_32(cmd, src, len);
629 /* mark entry as empty */
630 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
631 offsetof(struct wil6210_mbox_ring_desc, sync));
632 /* indicate */
7743882d 633 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
2be7d22f
VK		 634 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
635 hdr.flags);
636 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
637 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
7743882d 638 wil_dbg_wmi(wil, "WMI event 0x%04x\n",
2be7d22f
VK		 639 evt->event.wmi.id);
640 }
7743882d 641 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
2be7d22f
VK		 642 &evt->event.hdr, sizeof(hdr) + len, true);
643
644 /* advance tail */
645 r->tail = r->base + ((r->tail - r->base +
646 sizeof(struct wil6210_mbox_ring_desc)) % r->size);
647 iowrite32(r->tail, wil->csr + HOST_MBOX +
648 offsetof(struct wil6210_mbox_ctl, rx.tail));
649
650 /* add to the pending list */
651 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
652 list_add_tail(&evt->list, &wil->pending_wmi_ev);
653 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
654 {
655 int q = queue_work(wil->wmi_wq,
656 &wil->wmi_event_worker);
7743882d 657 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
2be7d22f
VK		 658 }
659 }
660}
661
662int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
663 u16 reply_id, void *reply, u8 reply_size, int to_msec)
664{
665 int rc;
666 int remain;
667
668 mutex_lock(&wil->wmi_mutex);
669
670 rc = __wmi_send(wil, cmdid, buf, len);
671 if (rc)
672 goto out;
673
674 wil->reply_id = reply_id;
675 wil->reply_buf = reply;
676 wil->reply_size = reply_size;
677 remain = wait_for_completion_timeout(&wil->wmi_ready,
678 msecs_to_jiffies(to_msec));
679 if (0 == remain) {
680 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
681 cmdid, reply_id, to_msec);
682 rc = -ETIME;
683 } else {
7743882d 684 wil_dbg_wmi(wil,
2be7d22f
VK		 685 "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
686 cmdid, reply_id,
687 to_msec - jiffies_to_msecs(remain));
688 }
689 wil->reply_id = 0;
690 wil->reply_buf = NULL;
691 wil->reply_size = 0;
692 out:
693 mutex_unlock(&wil->wmi_mutex);
694
695 return rc;
696}
697
698int wmi_echo(struct wil6210_priv *wil)
699{
700 struct wmi_echo_cmd cmd = {
701 .value = cpu_to_le32(0x12345678),
702 };
703
704 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
705 WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
706}
707
708int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
709{
710 struct wmi_set_mac_address_cmd cmd;
711
712 memcpy(cmd.mac, addr, ETH_ALEN);
713
7743882d 714 wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
2be7d22f
VK		 715
716 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
717}
718
b8023177 719int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
2be7d22f 720{
b8023177
VK		 721 int rc;
722
723 struct wmi_pcp_start_cmd cmd = {
2be7d22f
VK		 724 .bcon_interval = cpu_to_le16(bi),
725 .network_type = wmi_nettype,
726 .disable_sec_offload = 1,
b8023177 727 .channel = chan,
2be7d22f 728 };
b8023177
VK		 729 struct {
730 struct wil6210_mbox_hdr_wmi wmi;
731 struct wmi_pcp_started_event evt;
732 } __packed reply;
2be7d22f
VK		 733
734 if (!wil->secure_pcp)
735 cmd.disable_sec = 1;
736
b8023177
VK		 737 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
738 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 100);
739 if (rc)
740 return rc;
741
742 if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
743 rc = -EINVAL;
744
745 return rc;
746}
747
748int wmi_pcp_stop(struct wil6210_priv *wil)
749{
750 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
751 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
2be7d22f
VK		 752}
753
754int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
755{
756 struct wmi_set_ssid_cmd cmd = {
757 .ssid_len = cpu_to_le32(ssid_len),
758 };
759
760 if (ssid_len > sizeof(cmd.ssid))
761 return -EINVAL;
762
763 memcpy(cmd.ssid, ssid, ssid_len);
764
765 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
766}
767
768int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
769{
770 int rc;
771 struct {
772 struct wil6210_mbox_hdr_wmi wmi;
773 struct wmi_set_ssid_cmd cmd;
774 } __packed reply;
775 int len; /* reply.cmd.ssid_len in CPU order */
776
777 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
778 &reply, sizeof(reply), 20);
779 if (rc)
780 return rc;
781
782 len = le32_to_cpu(reply.cmd.ssid_len);
783 if (len > sizeof(reply.cmd.ssid))
784 return -EINVAL;
785
786 *ssid_len = len;
787 memcpy(ssid, reply.cmd.ssid, len);
788
789 return 0;
790}
791
792int wmi_set_channel(struct wil6210_priv *wil, int channel)
793{
794 struct wmi_set_pcp_channel_cmd cmd = {
795 .channel = channel - 1,
796 };
797
798 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
799}
800
801int wmi_get_channel(struct wil6210_priv *wil, int *channel)
802{
803 int rc;
804 struct {
805 struct wil6210_mbox_hdr_wmi wmi;
806 struct wmi_set_pcp_channel_cmd cmd;
807 } __packed reply;
808
809 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
810 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
811 if (rc)
812 return rc;
813
814 if (reply.cmd.channel > 3)
815 return -EINVAL;
816
817 *channel = reply.cmd.channel + 1;
818
819 return 0;
820}
821
b8023177
VK		 822int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
823{
824 struct wmi_p2p_cfg_cmd cmd = {
825 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
826 .channel = channel - 1,
827 };
828
829 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
830}
831
2be7d22f
VK		 832int wmi_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb)
833{
834 struct wmi_eapol_tx_cmd *cmd;
835 struct ethhdr *eth;
836 u16 eapol_len = skb->len - ETH_HLEN;
837 void *eapol = skb->data + ETH_HLEN;
838 uint i;
839 int rc;
840
841 skb_set_mac_header(skb, 0);
842 eth = eth_hdr(skb);
7743882d 843 wil_dbg_wmi(wil, "EAPOL %d bytes to %pM\n", eapol_len, eth->h_dest);
2be7d22f
VK		 844 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
845 if (memcmp(wil->dst_addr[i], eth->h_dest, ETH_ALEN) == 0)
846 goto found_dest;
847 }
848
849 return -EINVAL;
850
851 found_dest:
852 /* find out eapol data & len */
853 cmd = kzalloc(sizeof(*cmd) + eapol_len, GFP_KERNEL);
854 if (!cmd)
855 return -EINVAL;
856
857 memcpy(cmd->dst_mac, eth->h_dest, ETH_ALEN);
858 cmd->eapol_len = cpu_to_le16(eapol_len);
859 memcpy(cmd->eapol, eapol, eapol_len);
860 rc = wmi_send(wil, WMI_EAPOL_TX_CMDID, cmd, sizeof(*cmd) + eapol_len);
861 kfree(cmd);
862
863 return rc;
864}
865
866int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
867 const void *mac_addr)
868{
869 struct wmi_delete_cipher_key_cmd cmd = {
870 .key_index = key_index,
871 };
872
873 if (mac_addr)
874 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
875
876 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
877}
878
879int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
880 const void *mac_addr, int key_len, const void *key)
881{
882 struct wmi_add_cipher_key_cmd cmd = {
883 .key_index = key_index,
884 .key_usage = WMI_KEY_USE_PAIRWISE,
885 .key_len = key_len,
886 };
887
888 if (!key || (key_len > sizeof(cmd.key)))
889 return -EINVAL;
890
891 memcpy(cmd.key, key, key_len);
892 if (mac_addr)
893 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
894
895 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
896}
897
898int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
899{
900 int rc;
901 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
902 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
14f8dc49 903 if (!cmd)
2be7d22f 904 return -ENOMEM;
2be7d22f
VK		 905
906 cmd->mgmt_frm_type = type;
907 /* BUG: FW API define ieLen as u8. Will fix FW */
908 cmd->ie_len = cpu_to_le16(ie_len);
909 memcpy(cmd->ie_info, ie, ie_len);
03866e7d 910 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
2be7d22f
VK		 911 kfree(cmd);
912
913 return rc;
914}
915
47e19af9
VK		 916int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
917{
918 struct wireless_dev *wdev = wil->wdev;
919 struct net_device *ndev = wil_to_ndev(wil);
920 struct wmi_cfg_rx_chain_cmd cmd = {
921 .action = WMI_RX_CHAIN_ADD,
922 .rx_sw_ring = {
923 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
924 .ring_mem_base = cpu_to_le64(vring->pa),
925 .ring_size = cpu_to_le16(vring->size),
926 },
927 .mid = 0, /* TODO - what is it? */
928 .decap_trans_type = WMI_DECAP_TYPE_802_3,
929 };
930 struct {
931 struct wil6210_mbox_hdr_wmi wmi;
932 struct wmi_cfg_rx_chain_done_event evt;
933 } __packed evt;
934 int rc;
935
936 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
937 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
938
939 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
940 if (ch)
941 cmd.sniffer_cfg.channel = ch->hw_value - 1;
942 cmd.sniffer_cfg.phy_info_mode =
943 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
944 cmd.sniffer_cfg.phy_support =
945 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
946 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
947 }
948 /* typical time for secure PCP is 840ms */
949 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
950 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
951 if (rc)
952 return rc;
953
954 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
955
7743882d 956 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
47e19af9
VK		 957 le32_to_cpu(evt.evt.status), vring->hwtail);
958
959 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
960 rc = -EINVAL;
961
962 return rc;
963}
964
2be7d22f
VK		 965void wmi_event_flush(struct wil6210_priv *wil)
966{
967 struct pending_wmi_event *evt, *t;
968
7743882d 969 wil_dbg_wmi(wil, "%s()\n", __func__);
2be7d22f
VK		 970
971 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
972 list_del(&evt->list);
973 kfree(evt);
974 }
975}
976
977static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
978 void *d, int len)
979{
980 uint i;
981
982 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
983 if (wmi_evt_handlers[i].eventid == id) {
984 wmi_evt_handlers[i].handler(wil, id, d, len);
985 return true;
986 }
987 }
988
989 return false;
990}
991
992static void wmi_event_handle(struct wil6210_priv *wil,
993 struct wil6210_mbox_hdr *hdr)
994{
995 u16 len = le16_to_cpu(hdr->len);
996
997 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
998 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
999 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1000 void *evt_data = (void *)(&wmi[1]);
1001 u16 id = le16_to_cpu(wmi->id);
1002 /* check if someone waits for this event */
1003 if (wil->reply_id && wil->reply_id == id) {
1004 if (wil->reply_buf) {
1005 memcpy(wil->reply_buf, wmi,
1006 min(len, wil->reply_size));
1007 } else {
1008 wmi_evt_call_handler(wil, id, evt_data,
1009 len - sizeof(*wmi));
1010 }
7743882d 1011 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
2be7d22f
VK		 1012 complete(&wil->wmi_ready);
1013 return;
1014 }
1015 /* unsolicited event */
1016 /* search for handler */
1017 if (!wmi_evt_call_handler(wil, id, evt_data,
1018 len - sizeof(*wmi))) {
1019 wil_err(wil, "Unhandled event 0x%04x\n", id);
1020 }
1021 } else {
1022 wil_err(wil, "Unknown event type\n");
1023 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1024 hdr, sizeof(*hdr) + len, true);
1025 }
1026}
1027
1028/*
1029 * Retrieve next WMI event from the pending list
1030 */
1031static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1032{
1033 ulong flags;
1034 struct list_head *ret = NULL;
1035
1036 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1037
1038 if (!list_empty(&wil->pending_wmi_ev)) {
1039 ret = wil->pending_wmi_ev.next;
1040 list_del(ret);
1041 }
1042
1043 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1044
1045 return ret;
1046}
1047
1048/*
1049 * Handler for the WMI events
1050 */
1051void wmi_event_worker(struct work_struct *work)
1052{
1053 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1054 wmi_event_worker);
1055 struct pending_wmi_event *evt;
1056 struct list_head *lh;
1057
1058 while ((lh = next_wmi_ev(wil)) != NULL) {
1059 evt = list_entry(lh, struct pending_wmi_event, list);
1060 wmi_event_handle(wil, &evt->event.hdr);
1061 kfree(evt);
1062 }
1063}
Linux kernel - Deliverables
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