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         wil_set_recovery_state(wil, fw_recovery_idle);
 303         set_bit(wil_status_fwready, &wil->status);
 304         /* let the reset sequence continue */
 305         complete(&wil->wmi_ready);
 306 }
 307
 308 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 309 {
 310         struct wmi_rx_mgmt_packet_event *data = d;
 311         struct wiphy *wiphy = wil_to_wiphy(wil);
 312         struct ieee80211_mgmt *rx_mgmt_frame =
 313                         (struct ieee80211_mgmt *)data->payload;
 314         int ch_no = data->info.channel+1;
 315         u32 freq = ieee80211_channel_to_frequency(ch_no,
 316                         IEEE80211_BAND_60GHZ);
 317         struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq);
 318         s32 signal = data->info.sqi;
 319         __le16 fc = rx_mgmt_frame->frame_control;
 320         u32 d_len = le32_to_cpu(data->info.len);
 321         u16 d_status = le16_to_cpu(data->info.status);
 322
 323         wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d SQI %d%%\n",
 324                     data->info.channel, data->info.mcs, data->info.snr,
 325                     data->info.sqi);
 326         wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
 327                     le16_to_cpu(fc));
 328         wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
 329                     data->info.qid, data->info.mid, data->info.cid);
 330
 331         if (!channel) {
 332                 wil_err(wil, "Frame on unsupported channel\n");
 333                 return;
 334         }
 335
 336         if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
 337                 struct cfg80211_bss *bss;
 338                 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
 339                 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
 340                 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
 341                 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
 342                 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
 343                                                  u.beacon.variable);
 344                 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
 345                 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
 346                 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
 347                 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
 348                                  ie_len, true);
 349
 350                 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
 351                                                 d_len, signal, GFP_KERNEL);
 352                 if (bss) {
 353                         wil_dbg_wmi(wil, "Added BSS %pM\n",
 354                                     rx_mgmt_frame->bssid);
 355                         cfg80211_put_bss(wiphy, bss);
 356                 } else {
 357                         wil_err(wil, "cfg80211_inform_bss_frame() failed\n");
 358                 }
 359         } else {
 360                 cfg80211_rx_mgmt(wil->wdev, freq, signal,
 361                                  (void *)rx_mgmt_frame, d_len, 0);
 362         }
 363 }
 364
 365 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
 366                                   void *d, int len)
 367 {
 368         if (wil->scan_request) {
 369                 struct wmi_scan_complete_event *data = d;
 370                 bool aborted = (data->status != WMI_SCAN_SUCCESS);
 371
 372                 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
 373                 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
 374                              wil->scan_request, aborted);
 375
 376                 del_timer_sync(&wil->scan_timer);
 377                 cfg80211_scan_done(wil->scan_request, aborted);
 378                 wil->scan_request = NULL;
 379         } else {
 380                 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
 381         }
 382 }
 383
 384 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
 385 {
 386         struct net_device *ndev = wil_to_ndev(wil);
 387         struct wireless_dev *wdev = wil->wdev;
 388         struct wmi_connect_event *evt = d;
 389         int ch; /* channel number */
 390         struct station_info sinfo;
 391         u8 *assoc_req_ie, *assoc_resp_ie;
 392         size_t assoc_req_ielen, assoc_resp_ielen;
 393         /* capinfo(u16) + listen_interval(u16) + IEs */
 394         const size_t assoc_req_ie_offset = sizeof(u16) * 2;
 395         /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
 396         const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
 397
 398         if (len < sizeof(*evt)) {
 399                 wil_err(wil, "Connect event too short : %d bytes\n", len);
 400                 return;
 401         }
 402         if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
 403                    evt->assoc_resp_len) {
 404                 wil_err(wil,
 405                         "Connect event corrupted : %d != %d + %d + %d + %d\n",
 406                         len, (int)sizeof(*evt), evt->beacon_ie_len,
 407                         evt->assoc_req_len, evt->assoc_resp_len);
 408                 return;
 409         }
 410         if (evt->cid >= WIL6210_MAX_CID) {
 411                 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
 412                 return;
 413         }
 414
 415         ch = evt->channel + 1;
 416         wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
 417                     evt->bssid, ch, evt->cid);
 418         wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
 419                          evt->assoc_info, len - sizeof(*evt), true);
 420
 421         /* figure out IE's */
 422         assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
 423                                         assoc_req_ie_offset];
 424         assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
 425         if (evt->assoc_req_len <= assoc_req_ie_offset) {
 426                 assoc_req_ie = NULL;
 427                 assoc_req_ielen = 0;
 428         }
 429
 430         assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
 431                                          evt->assoc_req_len +
 432                                          assoc_resp_ie_offset];
 433         assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
 434         if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
 435                 assoc_resp_ie = NULL;
 436                 assoc_resp_ielen = 0;
 437         }
 438
 439         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 440             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 441                 if (!test_bit(wil_status_fwconnecting, &wil->status)) {
 442                         wil_err(wil, "Not in connecting state\n");
 443                         return;
 444                 }
 445                 del_timer_sync(&wil->connect_timer);
 446                 cfg80211_connect_result(ndev, evt->bssid,
 447                                         assoc_req_ie, assoc_req_ielen,
 448                                         assoc_resp_ie, assoc_resp_ielen,
 449                                         WLAN_STATUS_SUCCESS, GFP_KERNEL);
 450
 451         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 452                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 453                 memset(&sinfo, 0, sizeof(sinfo));
 454
 455                 sinfo.generation = wil->sinfo_gen++;
 456
 457                 if (assoc_req_ie) {
 458                         sinfo.assoc_req_ies = assoc_req_ie;
 459                         sinfo.assoc_req_ies_len = assoc_req_ielen;
 460                         sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
 461                 }
 462
 463                 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
 464         }
 465         clear_bit(wil_status_fwconnecting, &wil->status);
 466         set_bit(wil_status_fwconnected, &wil->status);
 467
 468         /* FIXME FW can transmit only ucast frames to peer */
 469         /* FIXME real ring_id instead of hard coded 0 */
 470         memcpy(wil->sta[evt->cid].addr, evt->bssid, ETH_ALEN);
 471         wil->sta[evt->cid].status = wil_sta_conn_pending;
 472
 473         wil->pending_connect_cid = evt->cid;
 474         queue_work(wil->wmi_wq_conn, &wil->connect_worker);
 475 }
 476
 477 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 478                                void *d, int len)
 479 {
 480         struct wmi_disconnect_event *evt = d;
 481         u16 reason_code = le16_to_cpu(evt->protocol_reason_status);
 482
 483         wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
 484                     evt->bssid, reason_code, evt->disconnect_reason);
 485
 486         wil->sinfo_gen++;
 487
 488         mutex_lock(&wil->mutex);
 489         wil6210_disconnect(wil, evt->bssid, reason_code, true);
 490         mutex_unlock(&wil->mutex);
 491 }
 492
 493 /*
 494  * Firmware reports EAPOL frame using WME event.
 495  * Reconstruct Ethernet frame and deliver it via normal Rx
 496  */
 497 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
 498                              void *d, int len)
 499 {
 500         struct net_device *ndev = wil_to_ndev(wil);
 501         struct wmi_eapol_rx_event *evt = d;
 502         u16 eapol_len = le16_to_cpu(evt->eapol_len);
 503         int sz = eapol_len + ETH_HLEN;
 504         struct sk_buff *skb;
 505         struct ethhdr *eth;
 506         int cid;
 507         struct wil_net_stats *stats = NULL;
 508
 509         wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
 510                     evt->src_mac);
 511
 512         cid = wil_find_cid(wil, evt->src_mac);
 513         if (cid >= 0)
 514                 stats = &wil->sta[cid].stats;
 515
 516         if (eapol_len > 196) { /* TODO: revisit size limit */
 517                 wil_err(wil, "EAPOL too large\n");
 518                 return;
 519         }
 520
 521         skb = alloc_skb(sz, GFP_KERNEL);
 522         if (!skb) {
 523                 wil_err(wil, "Failed to allocate skb\n");
 524                 return;
 525         }
 526
 527         eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
 528         memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN);
 529         memcpy(eth->h_source, evt->src_mac, ETH_ALEN);
 530         eth->h_proto = cpu_to_be16(ETH_P_PAE);
 531         memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
 532         skb->protocol = eth_type_trans(skb, ndev);
 533         if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
 534                 ndev->stats.rx_packets++;
 535                 ndev->stats.rx_bytes += sz;
 536                 if (stats) {
 537                         stats->rx_packets++;
 538                         stats->rx_bytes += sz;
 539                 }
 540         } else {
 541                 ndev->stats.rx_dropped++;
 542                 if (stats)
 543                         stats->rx_dropped++;
 544         }
 545 }
 546
 547 static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len)
 548 {
 549         struct net_device *ndev = wil_to_ndev(wil);
 550         struct wmi_data_port_open_event *evt = d;
 551         u8 cid = evt->cid;
 552
 553         wil_dbg_wmi(wil, "Link UP for CID %d\n", cid);
 554
 555         if (cid >= ARRAY_SIZE(wil->sta)) {
 556                 wil_err(wil, "Link UP for invalid CID %d\n", cid);
 557                 return;
 558         }
 559
 560         wil->sta[cid].data_port_open = true;
 561         netif_carrier_on(ndev);
 562 }
 563
 564 static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len)
 565 {
 566         struct net_device *ndev = wil_to_ndev(wil);
 567         struct wmi_wbe_link_down_event *evt = d;
 568         u8 cid = evt->cid;
 569
 570         wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n",
 571                     cid, le32_to_cpu(evt->reason));
 572
 573         if (cid >= ARRAY_SIZE(wil->sta)) {
 574                 wil_err(wil, "Link DOWN for invalid CID %d\n", cid);
 575                 return;
 576         }
 577
 578         wil->sta[cid].data_port_open = false;
 579         netif_carrier_off(ndev);
 580 }
 581
 582 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 583                               int len)
 584 {
 585         struct wmi_vring_ba_status_event *evt = d;
 586         struct wil_sta_info *sta;
 587         uint i, cid;
 588
 589         /* TODO: use Rx BA status, not Tx one */
 590
 591         wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d\n",
 592                     evt->ringid,
 593                     evt->status == WMI_BA_AGREED ? "OK" : "N/A",
 594                     evt->agg_wsize, __le16_to_cpu(evt->ba_timeout));
 595
 596         if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
 597                 wil_err(wil, "invalid ring id %d\n", evt->ringid);
 598                 return;
 599         }
 600
 601         mutex_lock(&wil->mutex);
 602
 603         cid = wil->vring2cid_tid[evt->ringid][0];
 604         if (cid >= WIL6210_MAX_CID) {
 605                 wil_err(wil, "invalid CID %d for vring %d\n", cid, evt->ringid);
 606                 goto out;
 607         }
 608
 609         sta = &wil->sta[cid];
 610         if (sta->status == wil_sta_unused) {
 611                 wil_err(wil, "CID %d unused\n", cid);
 612                 goto out;
 613         }
 614
 615         wil_dbg_wmi(wil, "BACK for CID %d %pM\n", cid, sta->addr);
 616         for (i = 0; i < WIL_STA_TID_NUM; i++) {
 617                 struct wil_tid_ampdu_rx *r;
 618                 unsigned long flags;
 619
 620                 spin_lock_irqsave(&sta->tid_rx_lock, flags);
 621
 622                 r = sta->tid_rx[i];
 623                 sta->tid_rx[i] = NULL;
 624                 wil_tid_ampdu_rx_free(wil, r);
 625
 626                 spin_unlock_irqrestore(&sta->tid_rx_lock, flags);
 627
 628                 if ((evt->status == WMI_BA_AGREED) && evt->agg_wsize)
 629                         sta->tid_rx[i] = wil_tid_ampdu_rx_alloc(wil,
 630                                                 evt->agg_wsize, 0);
 631         }
 632
 633 out:
 634         mutex_unlock(&wil->mutex);
 635 }
 636
 637 static const struct {
 638         int eventid;
 639         void (*handler)(struct wil6210_priv *wil, int eventid,
 640                         void *data, int data_len);
 641 } wmi_evt_handlers[] = {
 642         {WMI_READY_EVENTID,             wmi_evt_ready},
 643         {WMI_FW_READY_EVENTID,          wmi_evt_fw_ready},
 644         {WMI_RX_MGMT_PACKET_EVENTID,    wmi_evt_rx_mgmt},
 645         {WMI_SCAN_COMPLETE_EVENTID,     wmi_evt_scan_complete},
 646         {WMI_CONNECT_EVENTID,           wmi_evt_connect},
 647         {WMI_DISCONNECT_EVENTID,        wmi_evt_disconnect},
 648         {WMI_EAPOL_RX_EVENTID,          wmi_evt_eapol_rx},
 649         {WMI_DATA_PORT_OPEN_EVENTID,    wmi_evt_linkup},
 650         {WMI_WBE_LINKDOWN_EVENTID,      wmi_evt_linkdown},
 651         {WMI_BA_STATUS_EVENTID,         wmi_evt_ba_status},
 652 };
 653
 654 /*
 655  * Run in IRQ context
 656  * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
 657  * that will be eventually handled by the @wmi_event_worker in the thread
 658  * context of thread "wil6210_wmi"
 659  */
 660 void wmi_recv_cmd(struct wil6210_priv *wil)
 661 {
 662         struct wil6210_mbox_ring_desc d_tail;
 663         struct wil6210_mbox_hdr hdr;
 664         struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
 665         struct pending_wmi_event *evt;
 666         u8 *cmd;
 667         void __iomem *src;
 668         ulong flags;
 669         unsigned n;
 670
 671         if (!test_bit(wil_status_reset_done, &wil->status)) {
 672                 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 673                 return;
 674         }
 675
 676         for (n = 0;; n++) {
 677                 u16 len;
 678                 bool q;
 679
 680                 r->head = ioread32(wil->csr + HOST_MBOX +
 681                                    offsetof(struct wil6210_mbox_ctl, rx.head));
 682                 if (r->tail == r->head)
 683                         break;
 684
 685                 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
 686                             r->head, r->tail);
 687                 /* read cmd descriptor from tail */
 688                 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
 689                                      sizeof(struct wil6210_mbox_ring_desc));
 690                 if (d_tail.sync == 0) {
 691                         wil_err(wil, "Mbox evt not owned by FW?\n");
 692                         break;
 693                 }
 694
 695                 /* read cmd header from descriptor */
 696                 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
 697                         wil_err(wil, "Mbox evt at 0x%08x?\n",
 698                                 le32_to_cpu(d_tail.addr));
 699                         break;
 700                 }
 701                 len = le16_to_cpu(hdr.len);
 702                 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
 703                             le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
 704                             hdr.flags);
 705
 706                 /* read cmd buffer from descriptor */
 707                 src = wmi_buffer(wil, d_tail.addr) +
 708                       sizeof(struct wil6210_mbox_hdr);
 709                 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
 710                                              event.wmi) + len, 4),
 711                               GFP_KERNEL);
 712                 if (!evt)
 713                         break;
 714
 715                 evt->event.hdr = hdr;
 716                 cmd = (void *)&evt->event.wmi;
 717                 wil_memcpy_fromio_32(cmd, src, len);
 718                 /* mark entry as empty */
 719                 iowrite32(0, wil->csr + HOSTADDR(r->tail) +
 720                           offsetof(struct wil6210_mbox_ring_desc, sync));
 721                 /* indicate */
 722                 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
 723                     (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
 724                         struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi;
 725                         u16 id = le16_to_cpu(wmi->id);
 726                         u32 tstamp = le32_to_cpu(wmi->timestamp);
 727
 728                         wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 729                                     id, wmi->mid, tstamp);
 730                         trace_wil6210_wmi_event(wmi, &wmi[1],
 731                                                 len - sizeof(*wmi));
 732                 }
 733                 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
 734                                  &evt->event.hdr, sizeof(hdr) + len, true);
 735
 736                 /* advance tail */
 737                 r->tail = r->base + ((r->tail - r->base +
 738                           sizeof(struct wil6210_mbox_ring_desc)) % r->size);
 739                 iowrite32(r->tail, wil->csr + HOST_MBOX +
 740                           offsetof(struct wil6210_mbox_ctl, rx.tail));
 741
 742                 /* add to the pending list */
 743                 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 744                 list_add_tail(&evt->list, &wil->pending_wmi_ev);
 745                 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 746                 q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
 747                 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
 748         }
 749         /* normally, 1 event per IRQ should be processed */
 750         wil_dbg_wmi(wil, "%s -> %d events queued\n", __func__, n);
 751 }
 752
 753 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 754              u16 reply_id, void *reply, u8 reply_size, int to_msec)
 755 {
 756         int rc;
 757         int remain;
 758
 759         mutex_lock(&wil->wmi_mutex);
 760
 761         rc = __wmi_send(wil, cmdid, buf, len);
 762         if (rc)
 763                 goto out;
 764
 765         wil->reply_id = reply_id;
 766         wil->reply_buf = reply;
 767         wil->reply_size = reply_size;
 768         remain = wait_for_completion_timeout(&wil->wmi_call,
 769                                              msecs_to_jiffies(to_msec));
 770         if (0 == remain) {
 771                 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 772                         cmdid, reply_id, to_msec);
 773                 rc = -ETIME;
 774         } else {
 775                 wil_dbg_wmi(wil,
 776                             "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
 777                             cmdid, reply_id,
 778                             to_msec - jiffies_to_msecs(remain));
 779         }
 780         wil->reply_id = 0;
 781         wil->reply_buf = NULL;
 782         wil->reply_size = 0;
 783  out:
 784         mutex_unlock(&wil->wmi_mutex);
 785
 786         return rc;
 787 }
 788
 789 int wmi_echo(struct wil6210_priv *wil)
 790 {
 791         struct wmi_echo_cmd cmd = {
 792                 .value = cpu_to_le32(0x12345678),
 793         };
 794
 795         return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
 796                          WMI_ECHO_RSP_EVENTID, NULL, 0, 20);
 797 }
 798
 799 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
 800 {
 801         struct wmi_set_mac_address_cmd cmd;
 802
 803         memcpy(cmd.mac, addr, ETH_ALEN);
 804
 805         wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
 806
 807         return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
 808 }
 809
 810 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
 811 {
 812         int rc;
 813
 814         struct wmi_pcp_start_cmd cmd = {
 815                 .bcon_interval = cpu_to_le16(bi),
 816                 .network_type = wmi_nettype,
 817                 .disable_sec_offload = 1,
 818                 .channel = chan - 1,
 819                 .pcp_max_assoc_sta = max_assoc_sta,
 820         };
 821         struct {
 822                 struct wil6210_mbox_hdr_wmi wmi;
 823                 struct wmi_pcp_started_event evt;
 824         } __packed reply;
 825
 826         if (!wil->secure_pcp)
 827                 cmd.disable_sec = 1;
 828
 829         if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
 830             (cmd.pcp_max_assoc_sta <= 0)) {
 831                 wil_info(wil,
 832                          "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
 833                          max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
 834                 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
 835         }
 836
 837         /*
 838          * Processing time may be huge, in case of secure AP it takes about
 839          * 3500ms for FW to start AP
 840          */
 841         rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
 842                       WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
 843         if (rc)
 844                 return rc;
 845
 846         if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
 847                 rc = -EINVAL;
 848
 849         return rc;
 850 }
 851
 852 int wmi_pcp_stop(struct wil6210_priv *wil)
 853 {
 854         return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
 855                         WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
 856 }
 857
 858 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
 859 {
 860         struct wmi_set_ssid_cmd cmd = {
 861                 .ssid_len = cpu_to_le32(ssid_len),
 862         };
 863
 864         if (ssid_len > sizeof(cmd.ssid))
 865                 return -EINVAL;
 866
 867         memcpy(cmd.ssid, ssid, ssid_len);
 868
 869         return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
 870 }
 871
 872 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
 873 {
 874         int rc;
 875         struct {
 876                 struct wil6210_mbox_hdr_wmi wmi;
 877                 struct wmi_set_ssid_cmd cmd;
 878         } __packed reply;
 879         int len; /* reply.cmd.ssid_len in CPU order */
 880
 881         rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
 882                       &reply, sizeof(reply), 20);
 883         if (rc)
 884                 return rc;
 885
 886         len = le32_to_cpu(reply.cmd.ssid_len);
 887         if (len > sizeof(reply.cmd.ssid))
 888                 return -EINVAL;
 889
 890         *ssid_len = len;
 891         memcpy(ssid, reply.cmd.ssid, len);
 892
 893         return 0;
 894 }
 895
 896 int wmi_set_channel(struct wil6210_priv *wil, int channel)
 897 {
 898         struct wmi_set_pcp_channel_cmd cmd = {
 899                 .channel = channel - 1,
 900         };
 901
 902         return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
 903 }
 904
 905 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
 906 {
 907         int rc;
 908         struct {
 909                 struct wil6210_mbox_hdr_wmi wmi;
 910                 struct wmi_set_pcp_channel_cmd cmd;
 911         } __packed reply;
 912
 913         rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
 914                       WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
 915         if (rc)
 916                 return rc;
 917
 918         if (reply.cmd.channel > 3)
 919                 return -EINVAL;
 920
 921         *channel = reply.cmd.channel + 1;
 922
 923         return 0;
 924 }
 925
 926 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
 927 {
 928         struct wmi_p2p_cfg_cmd cmd = {
 929                 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
 930                 .channel = channel - 1,
 931         };
 932
 933         return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
 934 }
 935
 936 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
 937                        const void *mac_addr)
 938 {
 939         struct wmi_delete_cipher_key_cmd cmd = {
 940                 .key_index = key_index,
 941         };
 942
 943         if (mac_addr)
 944                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
 945
 946         return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
 947 }
 948
 949 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
 950                        const void *mac_addr, int key_len, const void *key)
 951 {
 952         struct wmi_add_cipher_key_cmd cmd = {
 953                 .key_index = key_index,
 954                 .key_usage = WMI_KEY_USE_PAIRWISE,
 955                 .key_len = key_len,
 956         };
 957
 958         if (!key || (key_len > sizeof(cmd.key)))
 959                 return -EINVAL;
 960
 961         memcpy(cmd.key, key, key_len);
 962         if (mac_addr)
 963                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
 964
 965         return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
 966 }
 967
 968 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
 969 {
 970         int rc;
 971         u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
 972         struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
 973
 974         if (!cmd)
 975                 return -ENOMEM;
 976         if (!ie)
 977                 ie_len = 0;
 978
 979         cmd->mgmt_frm_type = type;
 980         /* BUG: FW API define ieLen as u8. Will fix FW */
 981         cmd->ie_len = cpu_to_le16(ie_len);
 982         memcpy(cmd->ie_info, ie, ie_len);
 983         rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
 984         kfree(cmd);
 985
 986         return rc;
 987 }
 988
 989 /**
 990  * wmi_rxon - turn radio on/off
 991  * @on:         turn on if true, off otherwise
 992  *
 993  * Only switch radio. Channel should be set separately.
 994  * No timeout for rxon - radio turned on forever unless some other call
 995  * turns it off
 996  */
 997 int wmi_rxon(struct wil6210_priv *wil, bool on)
 998 {
 999         int rc;
1000         struct {
1001                 struct wil6210_mbox_hdr_wmi wmi;
1002                 struct wmi_listen_started_event evt;
1003         } __packed reply;
1004
1005         wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1006
1007         if (on) {
1008                 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1009                               WMI_LISTEN_STARTED_EVENTID,
1010                               &reply, sizeof(reply), 100);
1011                 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1012                         rc = -EINVAL;
1013         } else {
1014                 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1015                               WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1016         }
1017
1018         return rc;
1019 }
1020
1021 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1022 {
1023         struct wireless_dev *wdev = wil->wdev;
1024         struct net_device *ndev = wil_to_ndev(wil);
1025         struct wmi_cfg_rx_chain_cmd cmd = {
1026                 .action = WMI_RX_CHAIN_ADD,
1027                 .rx_sw_ring = {
1028                         .max_mpdu_size = cpu_to_le16(mtu_max + ETH_HLEN),
1029                         .ring_mem_base = cpu_to_le64(vring->pa),
1030                         .ring_size = cpu_to_le16(vring->size),
1031                 },
1032                 .mid = 0, /* TODO - what is it? */
1033                 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1034                 .reorder_type = WMI_RX_SW_REORDER,
1035         };
1036         struct {
1037                 struct wil6210_mbox_hdr_wmi wmi;
1038                 struct wmi_cfg_rx_chain_done_event evt;
1039         } __packed evt;
1040         int rc;
1041
1042         if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1043                 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1044
1045                 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1046                 if (ch)
1047                         cmd.sniffer_cfg.channel = ch->hw_value - 1;
1048                 cmd.sniffer_cfg.phy_info_mode =
1049                         cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1050                 cmd.sniffer_cfg.phy_support =
1051                         cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1052                                     ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
1053         } else {
1054                 /* Initialize offload (in non-sniffer mode).
1055                  * Linux IP stack always calculates IP checksum
1056                  * HW always calculate TCP/UDP checksum
1057                  */
1058                 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1059         }
1060         /* typical time for secure PCP is 840ms */
1061         rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1062                       WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1063         if (rc)
1064                 return rc;
1065
1066         vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1067
1068         wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1069                      le32_to_cpu(evt.evt.status), vring->hwtail);
1070
1071         if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1072                 rc = -EINVAL;
1073
1074         return rc;
1075 }
1076
1077 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_m, u32 *t_r)
1078 {
1079         int rc;
1080         struct wmi_temp_sense_cmd cmd = {
1081                 .measure_marlon_m_en = cpu_to_le32(!!t_m),
1082                 .measure_marlon_r_en = cpu_to_le32(!!t_r),
1083         };
1084         struct {
1085                 struct wil6210_mbox_hdr_wmi wmi;
1086                 struct wmi_temp_sense_done_event evt;
1087         } __packed reply;
1088
1089         rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1090                       WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1091         if (rc)
1092                 return rc;
1093
1094         if (t_m)
1095                 *t_m = le32_to_cpu(reply.evt.marlon_m_t1000);
1096         if (t_r)
1097                 *t_r = le32_to_cpu(reply.evt.marlon_r_t1000);
1098
1099         return 0;
1100 }
1101
1102 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason)
1103 {
1104         struct wmi_disconnect_sta_cmd cmd = {
1105                 .disconnect_reason = cpu_to_le16(reason),
1106         };
1107         memcpy(cmd.dst_mac, mac, ETH_ALEN);
1108
1109         wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1110
1111         return wmi_send(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd));
1112 }
1113
1114 void wmi_event_flush(struct wil6210_priv *wil)
1115 {
1116         struct pending_wmi_event *evt, *t;
1117
1118         wil_dbg_wmi(wil, "%s()\n", __func__);
1119
1120         list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1121                 list_del(&evt->list);
1122                 kfree(evt);
1123         }
1124 }
1125
1126 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1127                                  void *d, int len)
1128 {
1129         uint i;
1130
1131         for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1132                 if (wmi_evt_handlers[i].eventid == id) {
1133                         wmi_evt_handlers[i].handler(wil, id, d, len);
1134                         return true;
1135                 }
1136         }
1137
1138         return false;
1139 }
1140
1141 static void wmi_event_handle(struct wil6210_priv *wil,
1142                              struct wil6210_mbox_hdr *hdr)
1143 {
1144         u16 len = le16_to_cpu(hdr->len);
1145
1146         if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1147             (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1148                 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1149                 void *evt_data = (void *)(&wmi[1]);
1150                 u16 id = le16_to_cpu(wmi->id);
1151
1152                 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1153                             id, wil->reply_id);
1154                 /* check if someone waits for this event */
1155                 if (wil->reply_id && wil->reply_id == id) {
1156                         if (wil->reply_buf) {
1157                                 memcpy(wil->reply_buf, wmi,
1158                                        min(len, wil->reply_size));
1159                         } else {
1160                                 wmi_evt_call_handler(wil, id, evt_data,
1161                                                      len - sizeof(*wmi));
1162                         }
1163                         wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
1164                         complete(&wil->wmi_call);
1165                         return;
1166                 }
1167                 /* unsolicited event */
1168                 /* search for handler */
1169                 if (!wmi_evt_call_handler(wil, id, evt_data,
1170                                           len - sizeof(*wmi))) {
1171                         wil_err(wil, "Unhandled event 0x%04x\n", id);
1172                 }
1173         } else {
1174                 wil_err(wil, "Unknown event type\n");
1175                 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1176                                hdr, sizeof(*hdr) + len, true);
1177         }
1178 }
1179
1180 /*
1181  * Retrieve next WMI event from the pending list
1182  */
1183 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1184 {
1185         ulong flags;
1186         struct list_head *ret = NULL;
1187
1188         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1189
1190         if (!list_empty(&wil->pending_wmi_ev)) {
1191                 ret = wil->pending_wmi_ev.next;
1192                 list_del(ret);
1193         }
1194
1195         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1196
1197         return ret;
1198 }
1199
1200 /*
1201  * Handler for the WMI events
1202  */
1203 void wmi_event_worker(struct work_struct *work)
1204 {
1205         struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1206                                                  wmi_event_worker);
1207         struct pending_wmi_event *evt;
1208         struct list_head *lh;
1209
1210         wil_dbg_wmi(wil, "Start %s\n", __func__);
1211         while ((lh = next_wmi_ev(wil)) != NULL) {
1212                 evt = list_entry(lh, struct pending_wmi_event, list);
1213                 wmi_event_handle(wil, &evt->event.hdr);
1214                 kfree(evt);
1215         }
1216         wil_dbg_wmi(wil, "Finished %s\n", __func__);
1217 }