drivers/net/wireless/ath/wil6210/wmi.c

   1 /*
   2  * Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <linux/moduleparam.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/if_arp.h>
  20
  21 #include "wil6210.h"
  22 #include "txrx.h"
  23 #include "wmi.h"
  24 #include "trace.h"
  25
  26 static uint max_assoc_sta = 1;
  27 module_param(max_assoc_sta, uint, S_IRUGO | S_IWUSR);
  28 MODULE_PARM_DESC(max_assoc_sta, " Max number of stations associated to the AP");
  29
  30 /**
  31  * WMI event receiving - theory of operations
  32  *
  33  * When firmware about to report WMI event, it fills memory area
  34  * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
  35  * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
  36  *
  37  * @wmi_recv_cmd reads event, allocates memory chunk  and attaches it to the
  38  * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
  39  * and handles events within the @wmi_event_worker. Every event get detached
  40  * from list, processed and deleted.
  41  *
  42  * Purpose for this mechanism is to release IRQ thread; otherwise,
  43  * if WMI event handling involves another WMI command flow, this 2-nd flow
  44  * won't be completed because of blocked IRQ thread.
  45  */
  46
  47 /**
  48  * Addressing - theory of operations
  49  *
  50  * There are several buses present on the WIL6210 card.
  51  * Same memory areas are visible at different address on
  52  * the different busses. There are 3 main bus masters:
  53  *  - MAC CPU (ucode)
  54  *  - User CPU (firmware)
  55  *  - AHB (host)
  56  *
  57  * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
  58  * AHB addresses starting from 0x880000
  59  *
  60  * Internally, firmware uses addresses that allows faster access but
  61  * are invisible from the host. To read from these addresses, alternative
  62  * AHB address must be used.
  63  *
  64  * Memory mapping
  65  * Linker address         PCI/Host address
  66  *                        0x880000 .. 0xa80000  2Mb BAR0
  67  * 0x800000 .. 0x807000   0x900000 .. 0x907000  28k DCCM
  68  * 0x840000 .. 0x857000   0x908000 .. 0x91f000  92k PERIPH
  69  */
  70
  71 /**
  72  * @fw_mapping provides memory remapping table
  73  *
  74  * array size should be in sync with the declaration in the wil6210.h
  75  */
  76 const struct fw_map fw_mapping[] = {
  77         {0x000000, 0x040000, 0x8c0000, "fw_code"}, /* FW code RAM      256k */
  78         {0x800000, 0x808000, 0x900000, "fw_data"}, /* FW data RAM       32k */
  79         {0x840000, 0x860000, 0x908000, "fw_peri"}, /* periph. data RAM 128k */
  80         {0x880000, 0x88a000, 0x880000, "rgf"},     /* various RGF       40k */
  81         {0x88a000, 0x88b000, 0x88a000, "AGC_tbl"}, /* AGC table          4k */
  82         {0x88b000, 0x88c000, 0x88b000, "rgf_ext"}, /* Pcie_ext_rgf       4k */
  83         {0x8c0000, 0x949000, 0x8c0000, "upper"},   /* upper area       548k */
  84         /*
  85          * 920000..930000 ucode code RAM
  86          * 930000..932000 ucode data RAM
  87          * 932000..949000 back-door debug data
  88          */
  89 };
  90
  91 /**
  92  * return AHB address for given firmware/ucode internal (linker) address
  93  * @x - internal address
  94  * If address have no valid AHB mapping, return 0
  95  */
  96 static u32 wmi_addr_remap(u32 x)
  97 {
  98         uint i;
  99
 100         for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
 101                 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
 102                         return x + fw_mapping[i].host - fw_mapping[i].from;
 103         }
 104
 105         return 0;
 106 }
 107
 108 /**
 109  * Check address validity for WMI buffer; remap if needed
 110  * @ptr - internal (linker) fw/ucode address
 111  *
 112  * Valid buffer should be DWORD aligned
 113  *
 114  * return address for accessing buffer from the host;
 115  * if buffer is not valid, return NULL.
 116  */
 117 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
 118 {
 119         u32 off;
 120         u32 ptr = le32_to_cpu(ptr_);
 121
 122         if (ptr % 4)
 123                 return NULL;
 124
 125         ptr = wmi_addr_remap(ptr);
 126         if (ptr < WIL6210_FW_HOST_OFF)
 127                 return NULL;
 128
 129         off = HOSTADDR(ptr);
 130         if (off > WIL6210_MEM_SIZE - 4)
 131                 return NULL;
 132
 133         return wil->csr + off;
 134 }
 135
 136 /**
 137  * Check address validity
 138  */
 139 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
 140 {
 141         u32 off;
 142
 143         if (ptr % 4)
 144                 return NULL;
 145
 146         if (ptr < WIL6210_FW_HOST_OFF)
 147                 return NULL;
 148
 149         off = HOSTADDR(ptr);
 150         if (off > WIL6210_MEM_SIZE - 4)
 151                 return NULL;
 152
 153         return wil->csr + off;
 154 }
 155
 156 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
 157                  struct wil6210_mbox_hdr *hdr)
 158 {
 159         void __iomem *src = wmi_buffer(wil, ptr);
 160
 161         if (!src)
 162                 return -EINVAL;
 163
 164         wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
 165
 166         return 0;
 167 }
 168
 169 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
 170 {
 171         struct {
 172                 struct wil6210_mbox_hdr hdr;
 173                 struct wil6210_mbox_hdr_wmi wmi;
 174         } __packed cmd = {
 175                 .hdr = {
 176                         .type = WIL_MBOX_HDR_TYPE_WMI,
 177                         .flags = 0,
 178                         .len = cpu_to_le16(sizeof(cmd.wmi) + len),
 179                 },
 180                 .wmi = {
 181                         .mid = 0,
 182                         .id = cpu_to_le16(cmdid),
 183                 },
 184         };
 185         struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
 186         struct wil6210_mbox_ring_desc d_head;
 187         u32 next_head;
 188         void __iomem *dst;
 189         void __iomem *head = wmi_addr(wil, r->head);
 190         uint retry;
 191
 192         if (sizeof(cmd) + len > r->entry_size) {
 193                 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
 194                         (int)(sizeof(cmd) + len), r->entry_size);
 195                 return -ERANGE;
 196         }
 197
 198         might_sleep();
 199
 200         if (!test_bit(wil_status_fwready, &wil->status)) {
 201                 wil_err(wil, "WMI: cannot send command while FW not ready\n");
 202                 return -EAGAIN;
 203         }
 204
 205         if (!head) {
 206                 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
 207                 return -EINVAL;
 208         }
 209         /* read Tx head till it is not busy */
 210         for (retry = 5; retry > 0; retry--) {
 211                 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
 212                 if (d_head.sync == 0)
 213                         break;
 214                 msleep(20);
 215         }
 216         if (d_head.sync != 0) {
 217                 wil_err(wil, "WMI head busy\n");
 218                 return -EBUSY;
 219         }
 220         /* next head */
 221         next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
 222         wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
 223         /* wait till FW finish with previous command */
 224         for (retry = 5; retry > 0; retry--) {
 225                 r->tail = ioread32(wil->csr + HOST_MBOX +
 226                                    offsetof(struct wil6210_mbox_ctl, tx.tail));
 227                 if (next_head != r->tail)
 228                         break;
 229                 msleep(20);
 230         }
 231         if (next_head == r->tail) {
 232                 wil_err(wil, "WMI ring full\n");
 233                 return -EBUSY;
 234         }
 235         dst = wmi_buffer(wil, d_head.addr);
 236         if (!dst) {
 237                 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
 238                         le32_to_cpu(d_head.addr));
 239                 return -EINVAL;
 240         }
 241         cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
 242         /* set command */
 243         wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
 244         wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
 245                          sizeof(cmd), true);
 246         wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
 247                          len, true);
 248         wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
 249         wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
 250         /* mark entry as full */
 251         iowrite32(1, wil->csr + HOSTADDR(r->head) +
 252                   offsetof(struct wil6210_mbox_ring_desc, sync));
 253         /* advance next ptr */
 254         iowrite32(r->head = next_head, wil->csr + HOST_MBOX +
 255                   offsetof(struct wil6210_mbox_ctl, tx.head));
 256
 257         trace_wil6210_wmi_cmd(&cmd.wmi, buf, len);
 258
 259         /* interrupt to FW */
 260         iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT);
 261
 262         return 0;
 263 }
 264
 265 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
 266 {
 267         int rc;
 268
 269         mutex_lock(&wil->wmi_mutex);
 270         rc = __wmi_send(wil, cmdid, buf, len);
 271         mutex_unlock(&wil->wmi_mutex);
 272
 273         return rc;
 274 }
 275
 276 /*=== Event handlers ===*/
 277 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
 278 {
 279         struct net_device *ndev = wil_to_ndev(wil);
 280         struct wireless_dev *wdev = wil->wdev;
 281         struct wmi_ready_event *evt = d;
 282
 283         wil->fw_version = le32_to_cpu(evt->sw_version);
 284         wil->n_mids = evt->numof_additional_mids;
 285
 286         wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
 287                  evt->mac, wil->n_mids);
 288
 289         if (!is_valid_ether_addr(ndev->dev_addr)) {
 290                 memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
 291                 memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
 292         }
 293         snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
 294                  "%d", wil->fw_version);
 295 }
 296
 297 static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
 298                              int len)
 299 {
 300         wil_dbg_wmi(wil, "WMI: got FW ready event\n");
 301
 302         set_bit(wil_status_fwready, &wil->status);
 303         /* reuse wmi_ready for the firmware ready indication */
 304         complete(&wil->wmi_ready);
 305 }
 306
 307 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 308 {
 309         struct wmi_rx_mgmt_packet_event *data = d;
 310         struct wiphy *wiphy = wil_to_wiphy(wil);
 311         struct ieee80211_mgmt *rx_mgmt_frame =
 312                         (struct ieee80211_mgmt *)data->payload;
 313         int ch_no = data->info.channel+1;
 314         u32 freq = ieee80211_channel_to_frequency(ch_no,
 315                         IEEE80211_BAND_60GHZ);
 316         struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
 317         s32 signal = data->info.sqi;
 318         __le16 fc = rx_mgmt_frame->frame_control;
 319         u32 d_len = le32_to_cpu(data->info.len);
 320         u16 d_status = le16_to_cpu(data->info.status);
 321
 322         wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d SQI %d%%\n",
 323                     data->info.channel, data->info.mcs, data->info.snr,
 324                     data->info.sqi);
 325         wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
 326                     le16_to_cpu(fc));
 327         wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
 328                     data->info.qid, data->info.mid, data->info.cid);
 329
 330         if (!channel) {
 331                 wil_err(wil, "Frame on unsupported channel\n");
 332                 return;
 333         }
 334
 335         if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
 336                 struct cfg80211_bss *bss;
 337                 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
 338                 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
 339                 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
 340                 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
 341                 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
 342                                                  u.beacon.variable);
 343                 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
 344                 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
 345                 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
 346                 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
 347                                  ie_len, true);
 348
 349                 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
 350                                                 d_len, signal, GFP_KERNEL);
 351                 if (bss) {
 352                         wil_dbg_wmi(wil, "Added BSS %pM\n",
 353                                     rx_mgmt_frame->bssid);
 354                         cfg80211_put_bss(wiphy, bss);
 355                 } else {
 356                         wil_err(wil, "cfg80211_inform_bss_frame() failed\n");
 357                 }
 358         } else {
 359                 cfg80211_rx_mgmt(wil->wdev, freq, signal,
 360                                  (void *)rx_mgmt_frame, d_len, 0);
 361         }
 362 }
 363
 364 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
 365                                   void *d, int len)
 366 {
 367         if (wil->scan_request) {
 368                 struct wmi_scan_complete_event *data = d;
 369                 bool aborted = (data->status != WMI_SCAN_SUCCESS);
 370
 371                 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
 372                 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
 373                              wil->scan_request, aborted);
 374
 375                 del_timer_sync(&wil->scan_timer);
 376                 cfg80211_scan_done(wil->scan_request, aborted);
 377                 wil->scan_request = NULL;
 378         } else {
 379                 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
 380         }
 381 }
 382
 383 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
 384 {
 385         struct net_device *ndev = wil_to_ndev(wil);
 386         struct wireless_dev *wdev = wil->wdev;
 387         struct wmi_connect_event *evt = d;
 388         int ch; /* channel number */
 389         struct station_info sinfo;
 390         u8 *assoc_req_ie, *assoc_resp_ie;
 391         size_t assoc_req_ielen, assoc_resp_ielen;
 392         /* capinfo(u16) + listen_interval(u16) + IEs */
 393         const size_t assoc_req_ie_offset = sizeof(u16) * 2;
 394         /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
 395         const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
 396
 397         if (len < sizeof(*evt)) {
 398                 wil_err(wil, "Connect event too short : %d bytes\n", len);
 399                 return;
 400         }
 401         if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
 402                    evt->assoc_resp_len) {
 403                 wil_err(wil,
 404                         "Connect event corrupted : %d != %d + %d + %d + %d\n",
 405                         len, (int)sizeof(*evt), evt->beacon_ie_len,
 406                         evt->assoc_req_len, evt->assoc_resp_len);
 407                 return;
 408         }
 409         if (evt->cid >= WIL6210_MAX_CID) {
 410                 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
 411                 return;
 412         }
 413
 414         ch = evt->channel + 1;
 415         wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
 416                     evt->bssid, ch, evt->cid);
 417         wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
 418                          evt->assoc_info, len - sizeof(*evt), true);
 419
 420         /* figure out IE's */
 421         assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
 422                                         assoc_req_ie_offset];
 423         assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
 424         if (evt->assoc_req_len <= assoc_req_ie_offset) {
 425                 assoc_req_ie = NULL;
 426                 assoc_req_ielen = 0;
 427         }
 428
 429         assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
 430                                          evt->assoc_req_len +
 431                                          assoc_resp_ie_offset];
 432         assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
 433         if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
 434                 assoc_resp_ie = NULL;
 435                 assoc_resp_ielen = 0;
 436         }
 437
 438         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 439             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 440                 if (!test_bit(wil_status_fwconnecting, &wil->status)) {
 441                         wil_err(wil, "Not in connecting state\n");
 442                         return;
 443                 }
 444                 del_timer_sync(&wil->connect_timer);
 445                 cfg80211_connect_result(ndev, evt->bssid,
 446                                         assoc_req_ie, assoc_req_ielen,
 447                                         assoc_resp_ie, assoc_resp_ielen,
 448                                         WLAN_STATUS_SUCCESS, GFP_KERNEL);
 449
 450         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 451                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 452                 memset(&sinfo, 0, sizeof(sinfo));
 453
 454                 sinfo.generation = wil->sinfo_gen++;
 455
 456                 if (assoc_req_ie) {
 457                         sinfo.assoc_req_ies = assoc_req_ie;
 458                         sinfo.assoc_req_ies_len = assoc_req_ielen;
 459                         sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
 460                 }
 461
 462                 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
 463         }
 464         clear_bit(wil_status_fwconnecting, &wil->status);
 465         set_bit(wil_status_fwconnected, &wil->status);
 466
 467         /* FIXME FW can transmit only ucast frames to peer */
 468         /* FIXME real ring_id instead of hard coded 0 */
 469         memcpy(wil->sta[evt->cid].addr, evt->bssid, ETH_ALEN);
 470         wil->sta[evt->cid].status = wil_sta_conn_pending;
 471
 472         wil->pending_connect_cid = evt->cid;
 473         queue_work(wil->wmi_wq_conn, &wil->connect_worker);
 474 }
 475
 476 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 477                                void *d, int len)
 478 {
 479         struct wmi_disconnect_event *evt = d;
 480
 481         wil_dbg_wmi(wil, "Disconnect %pM reason %d proto %d wmi\n",
 482                     evt->bssid,
 483                     evt->protocol_reason_status, evt->disconnect_reason);
 484
 485         wil->sinfo_gen++;
 486
 487         mutex_lock(&wil->mutex);
 488         wil6210_disconnect(wil, evt->bssid);
 489         mutex_unlock(&wil->mutex);
 490 }
 491
 492 /*
 493  * Firmware reports EAPOL frame using WME event.
 494  * Reconstruct Ethernet frame and deliver it via normal Rx
 495  */
 496 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
 497                              void *d, int len)
 498 {
 499         struct net_device *ndev = wil_to_ndev(wil);
 500         struct wmi_eapol_rx_event *evt = d;
 501         u16 eapol_len = le16_to_cpu(evt->eapol_len);
 502         int sz = eapol_len + ETH_HLEN;
 503         struct sk_buff *skb;
 504         struct ethhdr *eth;
 505         int cid;
 506         struct wil_net_stats *stats = NULL;
 507
 508         wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
 509                     evt->src_mac);
 510
 511         cid = wil_find_cid(wil, evt->src_mac);
 512         if (cid >= 0)
 513                 stats = &wil->sta[cid].stats;
 514
 515         if (eapol_len > 196) { /* TODO: revisit size limit */
 516                 wil_err(wil, "EAPOL too large\n");
 517                 return;
 518         }
 519
 520         skb = alloc_skb(sz, GFP_KERNEL);
 521         if (!skb) {
 522                 wil_err(wil, "Failed to allocate skb\n");
 523                 return;
 524         }
 525
 526         eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
 527         memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
 528         memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
 529         eth->h_proto = cpu_to_be16(ETH_P_PAE);
 530         memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
 531         skb->protocol = eth_type_trans(skb, ndev);
 532         if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
 533                 ndev->stats.rx_packets++;
 534                 ndev->stats.rx_bytes += sz;
 535                 if (stats) {
 536                         stats->rx_packets++;
 537                         stats->rx_bytes += sz;
 538                 }
 539         } else {
 540                 ndev->stats.rx_dropped++;
 541                 if (stats)
 542                         stats->rx_dropped++;
 543         }
 544 }
 545
 546 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len)
 547 {
 548         struct net_device *ndev = wil_to_ndev(wil);
 549         struct wmi_data_port_open_event *evt = d;
 550         u8 cid = evt->cid;
 551
 552         wil_dbg_wmi(wil, "Link UP for CID %d\n", cid);
 553
 554         if (cid >= ARRAY_SIZE(wil->sta)) {
 555                 wil_err(wil, "Link UP for invalid CID %d\n", cid);
 556                 return;
 557         }
 558
 559         wil->sta[cid].data_port_open = true;
 560         netif_carrier_on(ndev);
 561 }
 562
 563 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len)
 564 {
 565         struct net_device *ndev = wil_to_ndev(wil);
 566         struct wmi_wbe_link_down_event *evt = d;
 567         u8 cid = evt->cid;
 568
 569         wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n",
 570                     cid, le32_to_cpu(evt->reason));
 571
 572         if (cid >= ARRAY_SIZE(wil->sta)) {
 573                 wil_err(wil, "Link DOWN for invalid CID %d\n", cid);
 574                 return;
 575         }
 576
 577         wil->sta[cid].data_port_open = false;
 578         netif_carrier_off(ndev);
 579 }
 580
 581 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 582                               int len)
 583 {
 584         struct wmi_vring_ba_status_event *evt = d;
 585         struct wil_sta_info *sta;
 586         uint i, cid;
 587
 588         /* TODO: use Rx BA status, not Tx one */
 589
 590         wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n",
 591                     evt->ringid,
 592                     evt->status == WMI_BA_AGREED ? "OK" : "N/A",
 593                     evt->agg_wsize, __le16_to_cpu(evt->ba_timeout));
 594
 595         if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
 596                 wil_err(wil, "invalid ring id %d\n", evt->ringid);
 597                 return;
 598         }
 599
 600         mutex_lock(&wil->mutex);
 601
 602         cid = wil->vring2cid_tid[evt->ringid][0];
 603         if (cid >= WIL6210_MAX_CID) {
 604                 wil_err(wil, "invalid CID %d for vring %d\n", cid, evt->ringid);
 605                 goto out;
 606         }
 607
 608         sta = &wil->sta[cid];
 609         if (sta->status == wil_sta_unused) {
 610                 wil_err(wil, "CID %d unused\n", cid);
 611                 goto out;
 612         }
 613
 614         wil_dbg_wmi(wil, "BACK for CID %d %pM\n", cid, sta->addr);
 615         for (i = 0; i < WIL_STA_TID_NUM; i++) {
 616                 struct wil_tid_ampdu_rx *r;
 617                 unsigned long flags;
 618
 619                 spin_lock_irqsave(&sta->tid_rx_lock, flags);
 620
 621                 r = sta->tid_rx[i];
 622                 sta->tid_rx[i] = NULL;
 623                 wil_tid_ampdu_rx_free(wil, r);
 624
 625                 spin_unlock_irqrestore(&sta->tid_rx_lock, flags);
 626
 627                 if ((evt->status == WMI_BA_AGREED) && evt->agg_wsize)
 628                         sta->tid_rx[i] = wil_tid_ampdu_rx_alloc(wil,
 629                                                 evt->agg_wsize, 0);
 630         }
 631
 632 out:
 633         mutex_unlock(&wil->mutex);
 634 }
 635
 636 static const struct {
 637         int eventid;
 638         void (*handler)(struct wil6210_priv *wil, int eventid,
 639                         void *data, int data_len);
 640 } wmi_evt_handlers[] = {
 641         {WMI_READY_EVENTID,             wmi_evt_ready},
 642         {WMI_FW_READY_EVENTID,          wmi_evt_fw_ready},
 643         {WMI_RX_MGMT_PACKET_EVENTID,    wmi_evt_rx_mgmt},
 644         {WMI_SCAN_COMPLETE_EVENTID,     wmi_evt_scan_complete},
 645         {WMI_CONNECT_EVENTID,           wmi_evt_connect},
 646         {WMI_DISCONNECT_EVENTID,        wmi_evt_disconnect},
 647         {WMI_EAPOL_RX_EVENTID,          wmi_evt_eapol_rx},
 648         {WMI_DATA_PORT_OPEN_EVENTID,    wmi_evt_linkup},
 649         {WMI_WBE_LINKDOWN_EVENTID,      wmi_evt_linkdown},
 650         {WMI_BA_STATUS_EVENTID,         wmi_evt_ba_status},
 651 };
 652
 653 /*
 654  * Run in IRQ context
 655  * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
 656  * that will be eventually handled by the @wmi_event_worker in the thread
 657  * context of thread "wil6210_wmi"
 658  */
 659 void wmi_recv_cmd(struct wil6210_priv *wil)
 660 {
 661         struct wil6210_mbox_ring_desc d_tail;
 662         struct wil6210_mbox_hdr hdr;
 663         struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
 664         struct pending_wmi_event *evt;
 665         u8 *cmd;
 666         void __iomem *src;
 667         ulong flags;
 668         unsigned n;
 669
 670         if (!test_bit(wil_status_reset_done, &wil->status)) {
 671                 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 672                 return;
 673         }
 674
 675         for (n = 0;; n++) {
 676                 u16 len;
 677                 bool q;
 678
 679                 r->head = ioread32(wil->csr + HOST_MBOX +
 680                                    offsetof(struct wil6210_mbox_ctl, rx.head));
 681                 if (r->tail == r->head)
 682                         break;
 683
 684                 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
 685                             r->head, r->tail);
 686                 /* read cmd descriptor from tail */
 687                 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
 688                                      sizeof(struct wil6210_mbox_ring_desc));
 689                 if (d_tail.sync == 0) {
 690                         wil_err(wil, "Mbox evt not owned by FW?\n");
 691                         break;
 692                 }
 693
 694                 /* read cmd header from descriptor */
 695                 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
 696                         wil_err(wil, "Mbox evt at 0x%08x?\n",
 697                                 le32_to_cpu(d_tail.addr));
 698                         break;
 699                 }
 700                 len = le16_to_cpu(hdr.len);
 701                 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
 702                             le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
 703                             hdr.flags);
 704
 705                 /* read cmd buffer from descriptor */
 706                 src = wmi_buffer(wil, d_tail.addr) +
 707                       sizeof(struct wil6210_mbox_hdr);
 708                 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
 709                                              event.wmi) + len, 4),
 710                               GFP_KERNEL);
 711                 if (!evt)
 712                         break;
 713
 714                 evt->event.hdr = hdr;
 715                 cmd = (void *)&evt->event.wmi;
 716                 wil_memcpy_fromio_32(cmd, src, len);
 717                 /* mark entry as empty */
 718                 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
 719                           offsetof(struct wil6210_mbox_ring_desc, sync));
 720                 /* indicate */
 721                 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
 722                     (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
 723                         struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi;
 724                         u16 id = le16_to_cpu(wmi->id);
 725                         u32 tstamp = le32_to_cpu(wmi->timestamp);
 726
 727                         wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 728                                     id, wmi->mid, tstamp);
 729                         trace_wil6210_wmi_event(wmi, &wmi[1],
 730                                                 len - sizeof(*wmi));
 731                 }
 732                 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
 733                                  &evt->event.hdr, sizeof(hdr) + len, true);
 734
 735                 /* advance tail */
 736                 r->tail = r->base + ((r->tail - r->base +
 737                           sizeof(struct wil6210_mbox_ring_desc)) % r->size);
 738                 iowrite32(r->tail, wil->csr + HOST_MBOX +
 739                           offsetof(struct wil6210_mbox_ctl, rx.tail));
 740
 741                 /* add to the pending list */
 742                 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 743                 list_add_tail(&evt->list, &wil->pending_wmi_ev);
 744                 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 745                 q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
 746                 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
 747         }
 748         /* normally, 1 event per IRQ should be processed */
 749         wil_dbg_wmi(wil, "%s -> %d events queued\n", __func__, n);
 750 }
 751
 752 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 753              u16 reply_id, void *reply, u8 reply_size, int to_msec)
 754 {
 755         int rc;
 756         int remain;
 757
 758         mutex_lock(&wil->wmi_mutex);
 759
 760         rc = __wmi_send(wil, cmdid, buf, len);
 761         if (rc)
 762                 goto out;
 763
 764         wil->reply_id = reply_id;
 765         wil->reply_buf = reply;
 766         wil->reply_size = reply_size;
 767         remain = wait_for_completion_timeout(&wil->wmi_ready,
 768                         msecs_to_jiffies(to_msec));
 769         if (0 == remain) {
 770                 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 771                         cmdid, reply_id, to_msec);
 772                 rc = -ETIME;
 773         } else {
 774                 wil_dbg_wmi(wil,
 775                             "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
 776                             cmdid, reply_id,
 777                             to_msec - jiffies_to_msecs(remain));
 778         }
 779         wil->reply_id = 0;
 780         wil->reply_buf = NULL;
 781         wil->reply_size = 0;
 782  out:
 783         mutex_unlock(&wil->wmi_mutex);
 784
 785         return rc;
 786 }
 787
 788 int wmi_echo(struct wil6210_priv *wil)
 789 {
 790         struct wmi_echo_cmd cmd = {
 791                 .value = cpu_to_le32(0x12345678),
 792         };
 793
 794         return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
 795                          WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
 796 }
 797
 798 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
 799 {
 800         struct wmi_set_mac_address_cmd cmd;
 801
 802         memcpy(cmd.mac, addr, ETH_ALEN);
 803
 804         wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
 805
 806         return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
 807 }
 808
 809 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
 810 {
 811         int rc;
 812
 813         struct wmi_pcp_start_cmd cmd = {
 814                 .bcon_interval = cpu_to_le16(bi),
 815                 .network_type = wmi_nettype,
 816                 .disable_sec_offload = 1,
 817                 .channel = chan - 1,
 818                 .pcp_max_assoc_sta = max_assoc_sta,
 819         };
 820         struct {
 821                 struct wil6210_mbox_hdr_wmi wmi;
 822                 struct wmi_pcp_started_event evt;
 823         } __packed reply;
 824
 825         if (!wil->secure_pcp)
 826                 cmd.disable_sec = 1;
 827
 828         if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
 829             (cmd.pcp_max_assoc_sta <= 0)) {
 830                 wil_info(wil,
 831                          "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
 832                          max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
 833                 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
 834         }
 835
 836         /*
 837          * Processing time may be huge, in case of secure AP it takes about
 838          * 3500ms for FW to start AP
 839          */
 840         rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
 841                       WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
 842         if (rc)
 843                 return rc;
 844
 845         if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
 846                 rc = -EINVAL;
 847
 848         return rc;
 849 }
 850
 851 int wmi_pcp_stop(struct wil6210_priv *wil)
 852 {
 853         return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
 854                         WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
 855 }
 856
 857 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
 858 {
 859         struct wmi_set_ssid_cmd cmd = {
 860                 .ssid_len = cpu_to_le32(ssid_len),
 861         };
 862
 863         if (ssid_len > sizeof(cmd.ssid))
 864                 return -EINVAL;
 865
 866         memcpy(cmd.ssid, ssid, ssid_len);
 867
 868         return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
 869 }
 870
 871 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
 872 {
 873         int rc;
 874         struct {
 875                 struct wil6210_mbox_hdr_wmi wmi;
 876                 struct wmi_set_ssid_cmd cmd;
 877         } __packed reply;
 878         int len; /* reply.cmd.ssid_len in CPU order */
 879
 880         rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
 881                       &reply, sizeof(reply), 20);
 882         if (rc)
 883                 return rc;
 884
 885         len = le32_to_cpu(reply.cmd.ssid_len);
 886         if (len > sizeof(reply.cmd.ssid))
 887                 return -EINVAL;
 888
 889         *ssid_len = len;
 890         memcpy(ssid, reply.cmd.ssid, len);
 891
 892         return 0;
 893 }
 894
 895 int wmi_set_channel(struct wil6210_priv *wil, int channel)
 896 {
 897         struct wmi_set_pcp_channel_cmd cmd = {
 898                 .channel = channel - 1,
 899         };
 900
 901         return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
 902 }
 903
 904 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
 905 {
 906         int rc;
 907         struct {
 908                 struct wil6210_mbox_hdr_wmi wmi;
 909                 struct wmi_set_pcp_channel_cmd cmd;
 910         } __packed reply;
 911
 912         rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
 913                       WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
 914         if (rc)
 915                 return rc;
 916
 917         if (reply.cmd.channel > 3)
 918                 return -EINVAL;
 919
 920         *channel = reply.cmd.channel + 1;
 921
 922         return 0;
 923 }
 924
 925 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
 926 {
 927         struct wmi_p2p_cfg_cmd cmd = {
 928                 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
 929                 .channel = channel - 1,
 930         };
 931
 932         return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
 933 }
 934
 935 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
 936                        const void *mac_addr)
 937 {
 938         struct wmi_delete_cipher_key_cmd cmd = {
 939                 .key_index = key_index,
 940         };
 941
 942         if (mac_addr)
 943                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
 944
 945         return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
 946 }
 947
 948 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
 949                        const void *mac_addr, int key_len, const void *key)
 950 {
 951         struct wmi_add_cipher_key_cmd cmd = {
 952                 .key_index = key_index,
 953                 .key_usage = WMI_KEY_USE_PAIRWISE,
 954                 .key_len = key_len,
 955         };
 956
 957         if (!key || (key_len > sizeof(cmd.key)))
 958                 return -EINVAL;
 959
 960         memcpy(cmd.key, key, key_len);
 961         if (mac_addr)
 962                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
 963
 964         return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
 965 }
 966
 967 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
 968 {
 969         int rc;
 970         u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
 971         struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
 972
 973         if (!cmd)
 974                 return -ENOMEM;
 975         if (!ie)
 976                 ie_len = 0;
 977
 978         cmd->mgmt_frm_type = type;
 979         /* BUG: FW API define ieLen as u8. Will fix FW */
 980         cmd->ie_len = cpu_to_le16(ie_len);
 981         memcpy(cmd->ie_info, ie, ie_len);
 982         rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
 983         kfree(cmd);
 984
 985         return rc;
 986 }
 987
 988 /**
 989  * wmi_rxon - turn radio on/off
 990  * @on:         turn on if true, off otherwise
 991  *
 992  * Only switch radio. Channel should be set separately.
 993  * No timeout for rxon - radio turned on forever unless some other call
 994  * turns it off
 995  */
 996 int wmi_rxon(struct wil6210_priv *wil, bool on)
 997 {
 998         int rc;
 999         struct {
1000                 struct wil6210_mbox_hdr_wmi wmi;
1001                 struct wmi_listen_started_event evt;
1002         } __packed reply;
1003
1004         wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1005
1006         if (on) {
1007                 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1008                               WMI_LISTEN_STARTED_EVENTID,
1009                               &reply, sizeof(reply), 100);
1010                 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1011                         rc = -EINVAL;
1012         } else {
1013                 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1014                               WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1015         }
1016
1017         return rc;
1018 }
1019
1020 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1021 {
1022         struct wireless_dev *wdev = wil->wdev;
1023         struct net_device *ndev = wil_to_ndev(wil);
1024         struct wmi_cfg_rx_chain_cmd cmd = {
1025                 .action = WMI_RX_CHAIN_ADD,
1026                 .rx_sw_ring = {
1027                         .max_mpdu_size = cpu_to_le16(RX_BUF_LEN),
1028                         .ring_mem_base = cpu_to_le64(vring->pa),
1029                         .ring_size = cpu_to_le16(vring->size),
1030                 },
1031                 .mid = 0, /* TODO - what is it? */
1032                 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1033                 .reorder_type = WMI_RX_SW_REORDER,
1034         };
1035         struct {
1036                 struct wil6210_mbox_hdr_wmi wmi;
1037                 struct wmi_cfg_rx_chain_done_event evt;
1038         } __packed evt;
1039         int rc;
1040
1041         if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1042                 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1043
1044                 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1045                 if (ch)
1046                         cmd.sniffer_cfg.channel = ch->hw_value - 1;
1047                 cmd.sniffer_cfg.phy_info_mode =
1048                         cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1049                 cmd.sniffer_cfg.phy_support =
1050                         cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1051                                     ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
1052         } else {
1053                 /* Initialize offload (in non-sniffer mode).
1054                  * Linux IP stack always calculates IP checksum
1055                  * HW always calculate TCP/UDP checksum
1056                  */
1057                 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1058         }
1059         /* typical time for secure PCP is 840ms */
1060         rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1061                       WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1062         if (rc)
1063                 return rc;
1064
1065         vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1066
1067         wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1068                      le32_to_cpu(evt.evt.status), vring->hwtail);
1069
1070         if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1071                 rc = -EINVAL;
1072
1073         return rc;
1074 }
1075
1076 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r)
1077 {
1078         int rc;
1079         struct wmi_temp_sense_cmd cmd = {
1080                 .measure_marlon_m_en = cpu_to_le32(!!t_m),
1081                 .measure_marlon_r_en = cpu_to_le32(!!t_r),
1082         };
1083         struct {
1084                 struct wil6210_mbox_hdr_wmi wmi;
1085                 struct wmi_temp_sense_done_event evt;
1086         } __packed reply;
1087
1088         rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1089                       WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1090         if (rc)
1091                 return rc;
1092
1093         if (t_m)
1094                 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000);
1095         if (t_r)
1096                 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000);
1097
1098         return 0;
1099 }
1100
1101 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason)
1102 {
1103         struct wmi_disconnect_sta_cmd cmd = {
1104                 .disconnect_reason = cpu_to_le16(reason),
1105         };
1106         memcpy(cmd.dst_mac, mac, ETH_ALEN);
1107
1108         wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1109
1110         return wmi_send(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd));
1111 }
1112
1113 void wmi_event_flush(struct wil6210_priv *wil)
1114 {
1115         struct pending_wmi_event *evt, *t;
1116
1117         wil_dbg_wmi(wil, "%s()\n", __func__);
1118
1119         list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1120                 list_del(&evt->list);
1121                 kfree(evt);
1122         }
1123 }
1124
1125 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1126                                  void *d, int len)
1127 {
1128         uint i;
1129
1130         for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1131                 if (wmi_evt_handlers[i].eventid == id) {
1132                         wmi_evt_handlers[i].handler(wil, id, d, len);
1133                         return true;
1134                 }
1135         }
1136
1137         return false;
1138 }
1139
1140 static void wmi_event_handle(struct wil6210_priv *wil,
1141                              struct wil6210_mbox_hdr *hdr)
1142 {
1143         u16 len = le16_to_cpu(hdr->len);
1144
1145         if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1146             (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1147                 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1148                 void *evt_data = (void *)(&wmi[1]);
1149                 u16 id = le16_to_cpu(wmi->id);
1150
1151                 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1152                             id, wil->reply_id);
1153                 /* check if someone waits for this event */
1154                 if (wil->reply_id && wil->reply_id == id) {
1155                         if (wil->reply_buf) {
1156                                 memcpy(wil->reply_buf, wmi,
1157                                        min(len, wil->reply_size));
1158                         } else {
1159                                 wmi_evt_call_handler(wil, id, evt_data,
1160                                                      len - sizeof(*wmi));
1161                         }
1162                         wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
1163                         complete(&wil->wmi_ready);
1164                         return;
1165                 }
1166                 /* unsolicited event */
1167                 /* search for handler */
1168                 if (!wmi_evt_call_handler(wil, id, evt_data,
1169                                           len - sizeof(*wmi))) {
1170                         wil_err(wil, "Unhandled event 0x%04x\n", id);
1171                 }
1172         } else {
1173                 wil_err(wil, "Unknown event type\n");
1174                 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1175                                hdr, sizeof(*hdr) + len, true);
1176         }
1177 }
1178
1179 /*
1180  * Retrieve next WMI event from the pending list
1181  */
1182 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1183 {
1184         ulong flags;
1185         struct list_head *ret = NULL;
1186
1187         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1188
1189         if (!list_empty(&wil->pending_wmi_ev)) {
1190                 ret = wil->pending_wmi_ev.next;
1191                 list_del(ret);
1192         }
1193
1194         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1195
1196         return ret;
1197 }
1198
1199 /*
1200  * Handler for the WMI events
1201  */
1202 void wmi_event_worker(struct work_struct *work)
1203 {
1204         struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1205                                                  wmi_event_worker);
1206         struct pending_wmi_event *evt;
1207         struct list_head *lh;
1208
1209         wil_dbg_wmi(wil, "Start %s\n", __func__);
1210         while ((lh = next_wmi_ev(wil)) != NULL) {
1211                 evt = list_entry(lh, struct pending_wmi_event, list);
1212                 wmi_event_handle(wil, &evt->event.hdr);
1213                 kfree(evt);
1214         }
1215         wil_dbg_wmi(wil, "Finished %s\n", __func__);
1216 }