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Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac802...
[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 22#include "wmi.h"
98658095 23#include "trace.h"
2be7d22f
VK		 24
25/**
26 * WMI event receiving - theory of operations
27 *
28 * When firmware about to report WMI event, it fills memory area
29 * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
30 * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
31 *
32 * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the
33 * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
34 * and handles events within the @wmi_event_worker. Every event get detached
35 * from list, processed and deleted.
36 *
37 * Purpose for this mechanism is to release IRQ thread; otherwise,
38 * if WMI event handling involves another WMI command flow, this 2-nd flow
39 * won't be completed because of blocked IRQ thread.
40 */
41
42/**
43 * Addressing - theory of operations
44 *
45 * There are several buses present on the WIL6210 card.
46 * Same memory areas are visible at different address on
47 * the different busses. There are 3 main bus masters:
48 * - MAC CPU (ucode)
49 * - User CPU (firmware)
50 * - AHB (host)
51 *
52 * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
53 * AHB addresses starting from 0x880000
54 *
55 * Internally, firmware uses addresses that allows faster access but
56 * are invisible from the host. To read from these addresses, alternative
57 * AHB address must be used.
58 *
59 * Memory mapping
60 * Linker address PCI/Host address
61 * 0x880000 .. 0xa80000 2Mb BAR0
62 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM
63 * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH
64 */
65
66/**
67 * @fw_mapping provides memory remapping table
68 */
69static const struct {
70 u32 from; /* linker address - from, inclusive */
71 u32 to; /* linker address - to, exclusive */
72 u32 host; /* PCI/Host address - BAR0 + 0x880000 */
73} fw_mapping[] = {
74 {0x000000, 0x040000, 0x8c0000}, /* FW code RAM 256k */
75 {0x800000, 0x808000, 0x900000}, /* FW data RAM 32k */
76 {0x840000, 0x860000, 0x908000}, /* peripheral data RAM 128k/96k used */
77 {0x880000, 0x88a000, 0x880000}, /* various RGF */
78 {0x8c0000, 0x932000, 0x8c0000}, /* trivial mapping for upper area */
79 /*
80 * 920000..930000 ucode code RAM
81 * 930000..932000 ucode data RAM
82 */
83};
84
85/**
86 * return AHB address for given firmware/ucode internal (linker) address
87 * @x - internal address
88 * If address have no valid AHB mapping, return 0
89 */
90static u32 wmi_addr_remap(u32 x)
91{
92 uint i;
93
94 for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
95 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
96 return x + fw_mapping[i].host - fw_mapping[i].from;
97 }
98
99 return 0;
100}
101
102/**
103 * Check address validity for WMI buffer; remap if needed
104 * @ptr - internal (linker) fw/ucode address
105 *
106 * Valid buffer should be DWORD aligned
107 *
108 * return address for accessing buffer from the host;
109 * if buffer is not valid, return NULL.
110 */
111void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
112{
113 u32 off;
114 u32 ptr = le32_to_cpu(ptr_);
115
116 if (ptr % 4)
117 return NULL;
118
119 ptr = wmi_addr_remap(ptr);
120 if (ptr < WIL6210_FW_HOST_OFF)
121 return NULL;
122
123 off = HOSTADDR(ptr);
124 if (off > WIL6210_MEM_SIZE - 4)
125 return NULL;
126
127 return wil->csr + off;
128}
129
130/**
131 * Check address validity
132 */
133void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
134{
135 u32 off;
136
137 if (ptr % 4)
138 return NULL;
139
140 if (ptr < WIL6210_FW_HOST_OFF)
141 return NULL;
142
143 off = HOSTADDR(ptr);
144 if (off > WIL6210_MEM_SIZE - 4)
145 return NULL;
146
147 return wil->csr + off;
148}
149
150int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
151 struct wil6210_mbox_hdr *hdr)
152{
153 void __iomem *src = wmi_buffer(wil, ptr);
154 if (!src)
155 return -EINVAL;
156
157 wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
158
159 return 0;
160}
161
162static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
163{
164 struct {
165 struct wil6210_mbox_hdr hdr;
166 struct wil6210_mbox_hdr_wmi wmi;
167 } __packed cmd = {
168 .hdr = {
169 .type = WIL_MBOX_HDR_TYPE_WMI,
170 .flags = 0,
171 .len = cpu_to_le16(sizeof(cmd.wmi) + len),
172 },
173 .wmi = {
174 .id = cpu_to_le16(cmdid),
175 .info1 = 0,
176 },
177 };
178 struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
179 struct wil6210_mbox_ring_desc d_head;
180 u32 next_head;
181 void __iomem *dst;
182 void __iomem *head = wmi_addr(wil, r->head);
183 uint retry;
184
185 if (sizeof(cmd) + len > r->entry_size) {
186 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
187 (int)(sizeof(cmd) + len), r->entry_size);
188 return -ERANGE;
2be7d22f
VK		 189 }
190
191 might_sleep();
192
193 if (!test_bit(wil_status_fwready, &wil->status)) {
194 wil_err(wil, "FW not ready\n");
195 return -EAGAIN;
196 }
197
198 if (!head) {
199 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
200 return -EINVAL;
201 }
202 /* read Tx head till it is not busy */
203 for (retry = 5; retry > 0; retry--) {
204 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
205 if (d_head.sync == 0)
206 break;
207 msleep(20);
208 }
209 if (d_head.sync != 0) {
210 wil_err(wil, "WMI head busy\n");
211 return -EBUSY;
212 }
213 /* next head */
214 next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
7743882d 215 wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
2be7d22f
VK		 216 /* wait till FW finish with previous command */
217 for (retry = 5; retry > 0; retry--) {
218 r->tail = ioread32(wil->csr + HOST_MBOX +
219 offsetof(struct wil6210_mbox_ctl, tx.tail));
220 if (next_head != r->tail)
221 break;
222 msleep(20);
223 }
224 if (next_head == r->tail) {
225 wil_err(wil, "WMI ring full\n");
226 return -EBUSY;
227 }
228 dst = wmi_buffer(wil, d_head.addr);
229 if (!dst) {
230 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
231 le32_to_cpu(d_head.addr));
232 return -EINVAL;
233 }
234 cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
235 /* set command */
7743882d
VK		 236 wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
237 wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
2be7d22f 238 sizeof(cmd), true);
7743882d 239 wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
2be7d22f
VK		 240 len, true);
241 wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
242 wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
243 /* mark entry as full */
244 iowrite32(1, wil->csr + HOSTADDR(r->head) +
245 offsetof(struct wil6210_mbox_ring_desc, sync));
246 /* advance next ptr */
247 iowrite32(r->head = next_head, wil->csr + HOST_MBOX +
248 offsetof(struct wil6210_mbox_ctl, tx.head));
249
98658095
VK		 250 trace_wil6210_wmi_cmd(cmdid, buf, len);
251
2be7d22f
VK		 252 /* interrupt to FW */
253 iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT);
254
255 return 0;
256}
257
258int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
259{
260 int rc;
261
262 mutex_lock(&wil->wmi_mutex);
263 rc = __wmi_send(wil, cmdid, buf, len);
264 mutex_unlock(&wil->wmi_mutex);
265
266 return rc;
267}
268
269/*=== Event handlers ===*/
270static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
271{
272 struct net_device *ndev = wil_to_ndev(wil);
273 struct wireless_dev *wdev = wil->wdev;
274 struct wmi_ready_event *evt = d;
b8023177
VK		 275 wil->fw_version = le32_to_cpu(evt->sw_version);
276 wil->n_mids = evt->numof_additional_mids;
2be7d22f 277
b8023177
VK		 278 wil_dbg_wmi(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
279 evt->mac, wil->n_mids);
2be7d22f
VK		 280
281 if (!is_valid_ether_addr(ndev->dev_addr)) {
282 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
283 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
284 }
285 snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
b8023177 286 "%d", wil->fw_version);
2be7d22f
VK		 287}
288
289static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
290 int len)
291{
7743882d 292 wil_dbg_wmi(wil, "WMI: FW ready\n");
2be7d22f
VK		 293
294 set_bit(wil_status_fwready, &wil->status);
295 /* reuse wmi_ready for the firmware ready indication */
296 complete(&wil->wmi_ready);
297}
298
299static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
300{
301 struct wmi_rx_mgmt_packet_event *data = d;
302 struct wiphy *wiphy = wil_to_wiphy(wil);
303 struct ieee80211_mgmt *rx_mgmt_frame =
304 (struct ieee80211_mgmt *)data->payload;
305 int ch_no = data->info.channel+1;
306 u32 freq = ieee80211_channel_to_frequency(ch_no,
307 IEEE80211_BAND_60GHZ);
308 struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
309 /* TODO convert LE to CPU */
310 s32 signal = 0; /* TODO */
311 __le16 fc = rx_mgmt_frame->frame_control;
312 u32 d_len = le32_to_cpu(data->info.len);
313 u16 d_status = le16_to_cpu(data->info.status);
314
7743882d 315 wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d\n",
2be7d22f 316 data->info.channel, data->info.mcs, data->info.snr);
7743882d 317 wil_dbg_wmi(wil, "status 0x%04x len %d stype %04x\n", d_status, d_len,
2be7d22f 318 le16_to_cpu(data->info.stype));
7743882d 319 wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
2be7d22f
VK		 320 data->info.qid, data->info.mid, data->info.cid);
321
322 if (!channel) {
323 wil_err(wil, "Frame on unsupported channel\n");
324 return;
325 }
326
327 if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
328 struct cfg80211_bss *bss;
a0f7845b
VK		 329
330 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
331 d_len, signal, GFP_KERNEL);
2be7d22f 332 if (bss) {
7743882d 333 wil_dbg_wmi(wil, "Added BSS %pM\n",
2be7d22f 334 rx_mgmt_frame->bssid);
5b112d3d 335 cfg80211_put_bss(wiphy, bss);
2be7d22f
VK		 336 } else {
337 wil_err(wil, "cfg80211_inform_bss() failed\n");
338 }
102b1d99
VK		 339 } else {
340 cfg80211_rx_mgmt(wil->wdev, freq, signal,
341 (void *)rx_mgmt_frame, d_len, GFP_KERNEL);
2be7d22f
VK		 342 }
343}
344
345static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
346 void *d, int len)
347{
348 if (wil->scan_request) {
349 struct wmi_scan_complete_event *data = d;
350 bool aborted = (data->status != 0);
351
7743882d 352 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
2be7d22f
VK		 353 cfg80211_scan_done(wil->scan_request, aborted);
354 wil->scan_request = NULL;
355 } else {
356 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
357 }
358}
359
360static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
361{
362 struct net_device *ndev = wil_to_ndev(wil);
363 struct wireless_dev *wdev = wil->wdev;
364 struct wmi_connect_event *evt = d;
365 int ch; /* channel number */
366 struct station_info sinfo;
367 u8 *assoc_req_ie, *assoc_resp_ie;
368 size_t assoc_req_ielen, assoc_resp_ielen;
369 /* capinfo(u16) + listen_interval(u16) + IEs */
370 const size_t assoc_req_ie_offset = sizeof(u16) * 2;
371 /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
372 const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
373
374 if (len < sizeof(*evt)) {
375 wil_err(wil, "Connect event too short : %d bytes\n", len);
376 return;
377 }
378 if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
379 evt->assoc_resp_len) {
380 wil_err(wil,
381 "Connect event corrupted : %d != %d + %d + %d + %d\n",
382 len, (int)sizeof(*evt), evt->beacon_ie_len,
383 evt->assoc_req_len, evt->assoc_resp_len);
384 return;
385 }
386 ch = evt->channel + 1;
7743882d 387 wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
2be7d22f 388 evt->bssid, ch, evt->cid);
7743882d 389 wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
2be7d22f
VK		 390 evt->assoc_info, len - sizeof(*evt), true);
391
392 /* figure out IE's */
393 assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
394 assoc_req_ie_offset];
395 assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
396 if (evt->assoc_req_len <= assoc_req_ie_offset) {
397 assoc_req_ie = NULL;
398 assoc_req_ielen = 0;
399 }
400
401 assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
402 evt->assoc_req_len +
403 assoc_resp_ie_offset];
404 assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
405 if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
406 assoc_resp_ie = NULL;
407 assoc_resp_ielen = 0;
408 }
409
410 if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
411 (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
412 if (wdev->sme_state != CFG80211_SME_CONNECTING) {
413 wil_err(wil, "Not in connecting state\n");
414 return;
415 }
416 del_timer_sync(&wil->connect_timer);
417 cfg80211_connect_result(ndev, evt->bssid,
418 assoc_req_ie, assoc_req_ielen,
419 assoc_resp_ie, assoc_resp_ielen,
420 WLAN_STATUS_SUCCESS, GFP_KERNEL);
421
422 } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
423 (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
424 memset(&sinfo, 0, sizeof(sinfo));
425
426 sinfo.generation = wil->sinfo_gen++;
427
428 if (assoc_req_ie) {
429 sinfo.assoc_req_ies = assoc_req_ie;
430 sinfo.assoc_req_ies_len = assoc_req_ielen;
431 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
432 }
433
434 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
435 }
436 set_bit(wil_status_fwconnected, &wil->status);
437
438 /* FIXME FW can transmit only ucast frames to peer */
439 /* FIXME real ring_id instead of hard coded 0 */
440 memcpy(wil->dst_addr[0], evt->bssid, ETH_ALEN);
441
442 wil->pending_connect_cid = evt->cid;
d81079f1 443 queue_work(wil->wmi_wq_conn, &wil->connect_worker);
2be7d22f
VK		 444}
445
446static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
447 void *d, int len)
448{
449 struct wmi_disconnect_event *evt = d;
450
7743882d 451 wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
2be7d22f
VK		 452 evt->bssid,
453 evt->protocol_reason_status, evt->disconnect_reason);
454
455 wil->sinfo_gen++;
456
457 wil6210_disconnect(wil, evt->bssid);
2be7d22f
VK		 458}
459
460static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len)
461{
462 struct wmi_notify_req_done_event *evt = d;
463
464 if (len < sizeof(*evt)) {
465 wil_err(wil, "Short NOTIFY event\n");
466 return;
467 }
468
469 wil->stats.tsf = le64_to_cpu(evt->tsf);
470 wil->stats.snr = le32_to_cpu(evt->snr_val);
471 wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs);
472 wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector);
473 wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector);
474 wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector);
475 wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector);
7743882d 476 wil_dbg_wmi(wil, "Link status, MCS %d TSF 0x%016llx\n"
2be7d22f
VK		 477 "BF status 0x%08x SNR 0x%08x\n"
478 "Tx Tpt %d goodput %d Rx goodput %d\n"
479 "Sectors(rx:tx) my %d:%d peer %d:%d\n",
480 wil->stats.bf_mcs, wil->stats.tsf, evt->status,
481 wil->stats.snr, le32_to_cpu(evt->tx_tpt),
482 le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput),
483 wil->stats.my_rx_sector, wil->stats.my_tx_sector,
484 wil->stats.peer_rx_sector, wil->stats.peer_tx_sector);
485}
486
487/*
488 * Firmware reports EAPOL frame using WME event.
489 * Reconstruct Ethernet frame and deliver it via normal Rx
490 */
491static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
492 void *d, int len)
493{
494 struct net_device *ndev = wil_to_ndev(wil);
495 struct wmi_eapol_rx_event *evt = d;
496 u16 eapol_len = le16_to_cpu(evt->eapol_len);
497 int sz = eapol_len + ETH_HLEN;
498 struct sk_buff *skb;
499 struct ethhdr *eth;
500
7743882d 501 wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
2be7d22f
VK		 502 evt->src_mac);
503
504 if (eapol_len > 196) { /* TODO: revisit size limit */
505 wil_err(wil, "EAPOL too large\n");
506 return;
507 }
508
509 skb = alloc_skb(sz, GFP_KERNEL);
510 if (!skb) {
511 wil_err(wil, "Failed to allocate skb\n");
512 return;
513 }
514 eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
515 memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
516 memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
517 eth->h_proto = cpu_to_be16(ETH_P_PAE);
518 memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
519 skb->protocol = eth_type_trans(skb, ndev);
520 if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
521 ndev->stats.rx_packets++;
522 ndev->stats.rx_bytes += skb->len;
523 } else {
524 ndev->stats.rx_dropped++;
525 }
526}
527
3442a504
VK		 528static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len)
529{
530 struct net_device *ndev = wil_to_ndev(wil);
531 struct wmi_data_port_open_event *evt = d;
532
533 wil_dbg_wmi(wil, "Link UP for CID %d\n", evt->cid);
534
535 netif_carrier_on(ndev);
536}
537
538static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len)
539{
540 struct net_device *ndev = wil_to_ndev(wil);
541 struct wmi_wbe_link_down_event *evt = d;
542
543 wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n",
544 evt->cid, le32_to_cpu(evt->reason));
545
546 netif_carrier_off(ndev);
547}
548
249a382b
VK		 549static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
550 int len)
551{
552 struct wmi_vring_ba_status_event *evt = d;
553
554 wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n",
555 evt->ringid, evt->status ? "N/A" : "OK", evt->agg_wsize,
556 __le16_to_cpu(evt->ba_timeout));
557}
558
2be7d22f
VK		 559static const struct {
560 int eventid;
561 void (*handler)(struct wil6210_priv *wil, int eventid,
562 void *data, int data_len);
563} wmi_evt_handlers[] = {
564 {WMI_READY_EVENTID, wmi_evt_ready},
565 {WMI_FW_READY_EVENTID, wmi_evt_fw_ready},
566 {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt},
567 {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete},
568 {WMI_CONNECT_EVENTID, wmi_evt_connect},
569 {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect},
570 {WMI_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify},
571 {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
3442a504
VK		 572 {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup},
573 {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown},
249a382b 574 {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status},
2be7d22f
VK		 575};
576
577/*
578 * Run in IRQ context
579 * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
580 * that will be eventually handled by the @wmi_event_worker in the thread
581 * context of thread "wil6210_wmi"
582 */
583void wmi_recv_cmd(struct wil6210_priv *wil)
584{
585 struct wil6210_mbox_ring_desc d_tail;
586 struct wil6210_mbox_hdr hdr;
587 struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
588 struct pending_wmi_event *evt;
589 u8 *cmd;
590 void __iomem *src;
591 ulong flags;
592
55f7acdd
VK		 593 if (!test_bit(wil_status_reset_done, &wil->status)) {
594 wil_err(wil, "Reset not completed\n");
595 return;
596 }
597
2be7d22f
VK		 598 for (;;) {
599 u16 len;
600
601 r->head = ioread32(wil->csr + HOST_MBOX +
602 offsetof(struct wil6210_mbox_ctl, rx.head));
603 if (r->tail == r->head)
604 return;
605
606 /* read cmd from tail */
607 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
608 sizeof(struct wil6210_mbox_ring_desc));
609 if (d_tail.sync == 0) {
610 wil_err(wil, "Mbox evt not owned by FW?\n");
611 return;
612 }
613
614 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
615 wil_err(wil, "Mbox evt at 0x%08x?\n",
616 le32_to_cpu(d_tail.addr));
617 return;
618 }
619
620 len = le16_to_cpu(hdr.len);
621 src = wmi_buffer(wil, d_tail.addr) +
622 sizeof(struct wil6210_mbox_hdr);
623 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
624 event.wmi) + len, 4),
625 GFP_KERNEL);
14f8dc49 626 if (!evt)
2be7d22f 627 return;
14f8dc49 628
2be7d22f
VK		 629 evt->event.hdr = hdr;
630 cmd = (void *)&evt->event.wmi;
631 wil_memcpy_fromio_32(cmd, src, len);
632 /* mark entry as empty */
633 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
634 offsetof(struct wil6210_mbox_ring_desc, sync));
635 /* indicate */
7743882d 636 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
2be7d22f
VK		 637 le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
638 hdr.flags);
639 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
640 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
98658095
VK		 641 u16 id = le16_to_cpu(evt->event.wmi.id);
642 wil_dbg_wmi(wil, "WMI event 0x%04x\n", id);
643 trace_wil6210_wmi_event(id, &evt->event.wmi, len);
2be7d22f 644 }
7743882d 645 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
2be7d22f
VK		 646 &evt->event.hdr, sizeof(hdr) + len, true);
647
648 /* advance tail */
649 r->tail = r->base + ((r->tail - r->base +
650 sizeof(struct wil6210_mbox_ring_desc)) % r->size);
651 iowrite32(r->tail, wil->csr + HOST_MBOX +
652 offsetof(struct wil6210_mbox_ctl, rx.tail));
653
654 /* add to the pending list */
655 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
656 list_add_tail(&evt->list, &wil->pending_wmi_ev);
657 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
658 {
659 int q = queue_work(wil->wmi_wq,
660 &wil->wmi_event_worker);
7743882d 661 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
2be7d22f
VK		 662 }
663 }
664}
665
666int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
667 u16 reply_id, void *reply, u8 reply_size, int to_msec)
668{
669 int rc;
670 int remain;
671
672 mutex_lock(&wil->wmi_mutex);
673
674 rc = __wmi_send(wil, cmdid, buf, len);
675 if (rc)
676 goto out;
677
678 wil->reply_id = reply_id;
679 wil->reply_buf = reply;
680 wil->reply_size = reply_size;
681 remain = wait_for_completion_timeout(&wil->wmi_ready,
682 msecs_to_jiffies(to_msec));
683 if (0 == remain) {
684 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
685 cmdid, reply_id, to_msec);
686 rc = -ETIME;
687 } else {
7743882d 688 wil_dbg_wmi(wil,
2be7d22f
VK		 689 "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
690 cmdid, reply_id,
691 to_msec - jiffies_to_msecs(remain));
692 }
693 wil->reply_id = 0;
694 wil->reply_buf = NULL;
695 wil->reply_size = 0;
696 out:
697 mutex_unlock(&wil->wmi_mutex);
698
699 return rc;
700}
701
702int wmi_echo(struct wil6210_priv *wil)
703{
704 struct wmi_echo_cmd cmd = {
705 .value = cpu_to_le32(0x12345678),
706 };
707
708 return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
709 WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
710}
711
712int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
713{
714 struct wmi_set_mac_address_cmd cmd;
715
716 memcpy(cmd.mac, addr, ETH_ALEN);
717
7743882d 718 wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
2be7d22f
VK		 719
720 return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
721}
722
b8023177 723int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
2be7d22f 724{
b8023177
VK		 725 int rc;
726
727 struct wmi_pcp_start_cmd cmd = {
2be7d22f
VK		 728 .bcon_interval = cpu_to_le16(bi),
729 .network_type = wmi_nettype,
730 .disable_sec_offload = 1,
b8023177 731 .channel = chan,
2be7d22f 732 };
b8023177
VK		 733 struct {
734 struct wil6210_mbox_hdr_wmi wmi;
735 struct wmi_pcp_started_event evt;
736 } __packed reply;
2be7d22f
VK		 737
738 if (!wil->secure_pcp)
739 cmd.disable_sec = 1;
740
b8023177
VK		 741 rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
742 WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 100);
743 if (rc)
744 return rc;
745
746 if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
747 rc = -EINVAL;
748
749 return rc;
750}
751
752int wmi_pcp_stop(struct wil6210_priv *wil)
753{
754 return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
755 WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
2be7d22f
VK		 756}
757
758int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
759{
760 struct wmi_set_ssid_cmd cmd = {
761 .ssid_len = cpu_to_le32(ssid_len),
762 };
763
764 if (ssid_len > sizeof(cmd.ssid))
765 return -EINVAL;
766
767 memcpy(cmd.ssid, ssid, ssid_len);
768
769 return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
770}
771
772int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
773{
774 int rc;
775 struct {
776 struct wil6210_mbox_hdr_wmi wmi;
777 struct wmi_set_ssid_cmd cmd;
778 } __packed reply;
779 int len; /* reply.cmd.ssid_len in CPU order */
780
781 rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
782 &reply, sizeof(reply), 20);
783 if (rc)
784 return rc;
785
786 len = le32_to_cpu(reply.cmd.ssid_len);
787 if (len > sizeof(reply.cmd.ssid))
788 return -EINVAL;
789
790 *ssid_len = len;
791 memcpy(ssid, reply.cmd.ssid, len);
792
793 return 0;
794}
795
796int wmi_set_channel(struct wil6210_priv *wil, int channel)
797{
798 struct wmi_set_pcp_channel_cmd cmd = {
799 .channel = channel - 1,
800 };
801
802 return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
803}
804
805int wmi_get_channel(struct wil6210_priv *wil, int *channel)
806{
807 int rc;
808 struct {
809 struct wil6210_mbox_hdr_wmi wmi;
810 struct wmi_set_pcp_channel_cmd cmd;
811 } __packed reply;
812
813 rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
814 WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
815 if (rc)
816 return rc;
817
818 if (reply.cmd.channel > 3)
819 return -EINVAL;
820
821 *channel = reply.cmd.channel + 1;
822
823 return 0;
824}
825
b8023177
VK		 826int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
827{
828 struct wmi_p2p_cfg_cmd cmd = {
829 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
830 .channel = channel - 1,
831 };
832
833 return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
834}
835
2be7d22f
VK		 836int wmi_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb)
837{
838 struct wmi_eapol_tx_cmd *cmd;
839 struct ethhdr *eth;
840 u16 eapol_len = skb->len - ETH_HLEN;
841 void *eapol = skb->data + ETH_HLEN;
842 uint i;
843 int rc;
844
845 skb_set_mac_header(skb, 0);
846 eth = eth_hdr(skb);
7743882d 847 wil_dbg_wmi(wil, "EAPOL %d bytes to %pM\n", eapol_len, eth->h_dest);
2be7d22f
VK		 848 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
849 if (memcmp(wil->dst_addr[i], eth->h_dest, ETH_ALEN) == 0)
850 goto found_dest;
851 }
852
853 return -EINVAL;
854
855 found_dest:
856 /* find out eapol data & len */
857 cmd = kzalloc(sizeof(*cmd) + eapol_len, GFP_KERNEL);
858 if (!cmd)
859 return -EINVAL;
860
861 memcpy(cmd->dst_mac, eth->h_dest, ETH_ALEN);
862 cmd->eapol_len = cpu_to_le16(eapol_len);
863 memcpy(cmd->eapol, eapol, eapol_len);
864 rc = wmi_send(wil, WMI_EAPOL_TX_CMDID, cmd, sizeof(*cmd) + eapol_len);
865 kfree(cmd);
866
867 return rc;
868}
869
870int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
871 const void *mac_addr)
872{
873 struct wmi_delete_cipher_key_cmd cmd = {
874 .key_index = key_index,
875 };
876
877 if (mac_addr)
878 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
879
880 return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
881}
882
883int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
884 const void *mac_addr, int key_len, const void *key)
885{
886 struct wmi_add_cipher_key_cmd cmd = {
887 .key_index = key_index,
888 .key_usage = WMI_KEY_USE_PAIRWISE,
889 .key_len = key_len,
890 };
891
892 if (!key || (key_len > sizeof(cmd.key)))
893 return -EINVAL;
894
895 memcpy(cmd.key, key, key_len);
896 if (mac_addr)
897 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
898
899 return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
900}
901
902int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
903{
904 int rc;
905 u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
906 struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
14f8dc49 907 if (!cmd)
2be7d22f 908 return -ENOMEM;
2be7d22f
VK		 909
910 cmd->mgmt_frm_type = type;
911 /* BUG: FW API define ieLen as u8. Will fix FW */
912 cmd->ie_len = cpu_to_le16(ie_len);
913 memcpy(cmd->ie_info, ie, ie_len);
03866e7d 914 rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
2be7d22f
VK		 915 kfree(cmd);
916
917 return rc;
918}
919
47e19af9
VK		 920int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
921{
922 struct wireless_dev *wdev = wil->wdev;
923 struct net_device *ndev = wil_to_ndev(wil);
924 struct wmi_cfg_rx_chain_cmd cmd = {
925 .action = WMI_RX_CHAIN_ADD,
926 .rx_sw_ring = {
927 .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
928 .ring_mem_base = cpu_to_le64(vring->pa),
929 .ring_size = cpu_to_le16(vring->size),
930 },
931 .mid = 0, /* TODO - what is it? */
932 .decap_trans_type = WMI_DECAP_TYPE_802_3,
933 };
934 struct {
935 struct wil6210_mbox_hdr_wmi wmi;
936 struct wmi_cfg_rx_chain_done_event evt;
937 } __packed evt;
938 int rc;
939
940 if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
941 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
942
943 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
944 if (ch)
945 cmd.sniffer_cfg.channel = ch->hw_value - 1;
946 cmd.sniffer_cfg.phy_info_mode =
947 cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
948 cmd.sniffer_cfg.phy_support =
949 cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
950 ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
951 }
952 /* typical time for secure PCP is 840ms */
953 rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
954 WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
955 if (rc)
956 return rc;
957
958 vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
959
7743882d 960 wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
47e19af9
VK		 961 le32_to_cpu(evt.evt.status), vring->hwtail);
962
963 if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
964 rc = -EINVAL;
965
966 return rc;
967}
968
1a2780e0
VK		 969int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r)
970{
971 int rc;
972 struct wmi_temp_sense_cmd cmd = {
973 .measure_marlon_m_en = cpu_to_le32(!!t_m),
974 .measure_marlon_r_en = cpu_to_le32(!!t_r),
975 };
976 struct {
977 struct wil6210_mbox_hdr_wmi wmi;
978 struct wmi_temp_sense_done_event evt;
979 } __packed reply;
980
981 rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
982 WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
983 if (rc)
984 return rc;
985
986 if (t_m)
987 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000);
988 if (t_r)
989 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000);
990
991 return 0;
992}
993
2be7d22f
VK		 994void wmi_event_flush(struct wil6210_priv *wil)
995{
996 struct pending_wmi_event *evt, *t;
997
7743882d 998 wil_dbg_wmi(wil, "%s()\n", __func__);
2be7d22f
VK		 999
1000 list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1001 list_del(&evt->list);
1002 kfree(evt);
1003 }
1004}
1005
1006static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1007 void *d, int len)
1008{
1009 uint i;
1010
1011 for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1012 if (wmi_evt_handlers[i].eventid == id) {
1013 wmi_evt_handlers[i].handler(wil, id, d, len);
1014 return true;
1015 }
1016 }
1017
1018 return false;
1019}
1020
1021static void wmi_event_handle(struct wil6210_priv *wil,
1022 struct wil6210_mbox_hdr *hdr)
1023{
1024 u16 len = le16_to_cpu(hdr->len);
1025
1026 if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1027 (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1028 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1029 void *evt_data = (void *)(&wmi[1]);
1030 u16 id = le16_to_cpu(wmi->id);
1031 /* check if someone waits for this event */
1032 if (wil->reply_id && wil->reply_id == id) {
1033 if (wil->reply_buf) {
1034 memcpy(wil->reply_buf, wmi,
1035 min(len, wil->reply_size));
1036 } else {
1037 wmi_evt_call_handler(wil, id, evt_data,
1038 len - sizeof(*wmi));
1039 }
7743882d 1040 wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
2be7d22f
VK		 1041 complete(&wil->wmi_ready);
1042 return;
1043 }
1044 /* unsolicited event */
1045 /* search for handler */
1046 if (!wmi_evt_call_handler(wil, id, evt_data,
1047 len - sizeof(*wmi))) {
1048 wil_err(wil, "Unhandled event 0x%04x\n", id);
1049 }
1050 } else {
1051 wil_err(wil, "Unknown event type\n");
1052 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1053 hdr, sizeof(*hdr) + len, true);
1054 }
1055}
1056
1057/*
1058 * Retrieve next WMI event from the pending list
1059 */
1060static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1061{
1062 ulong flags;
1063 struct list_head *ret = NULL;
1064
1065 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1066
1067 if (!list_empty(&wil->pending_wmi_ev)) {
1068 ret = wil->pending_wmi_ev.next;
1069 list_del(ret);
1070 }
1071
1072 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1073
1074 return ret;
1075}
1076
1077/*
1078 * Handler for the WMI events
1079 */
1080void wmi_event_worker(struct work_struct *work)
1081{
1082 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1083 wmi_event_worker);
1084 struct pending_wmi_event *evt;
1085 struct list_head *lh;
1086
1087 while ((lh = next_wmi_ev(wil)) != NULL) {
1088 evt = list_entry(lh, struct pending_wmi_event, list);
1089 wmi_event_handle(wil, &evt->event.hdr);
1090 kfree(evt);
1091 }
1092}
Linux kernel - Deliverables
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