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

   1 /*
   2  * Copyright (c) 2012-2015 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 = WIL6210_MAX_CID;
  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 int agg_wsize; /* = 0; */
  31 module_param(agg_wsize, int, S_IRUGO | S_IWUSR);
  32 MODULE_PARM_DESC(agg_wsize, " Window size for Tx Block Ack after connect;"
  33                  " 0 - use default; < 0 - don't auto-establish");
  34
  35 /**
  36  * WMI event receiving - theory of operations
  37  *
  38  * When firmware about to report WMI event, it fills memory area
  39  * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
  40  * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
  41  *
  42  * @wmi_recv_cmd reads event, allocates memory chunk  and attaches it to the
  43  * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
  44  * and handles events within the @wmi_event_worker. Every event get detached
  45  * from list, processed and deleted.
  46  *
  47  * Purpose for this mechanism is to release IRQ thread; otherwise,
  48  * if WMI event handling involves another WMI command flow, this 2-nd flow
  49  * won't be completed because of blocked IRQ thread.
  50  */
  51
  52 /**
  53  * Addressing - theory of operations
  54  *
  55  * There are several buses present on the WIL6210 card.
  56  * Same memory areas are visible at different address on
  57  * the different busses. There are 3 main bus masters:
  58  *  - MAC CPU (ucode)
  59  *  - User CPU (firmware)
  60  *  - AHB (host)
  61  *
  62  * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
  63  * AHB addresses starting from 0x880000
  64  *
  65  * Internally, firmware uses addresses that allows faster access but
  66  * are invisible from the host. To read from these addresses, alternative
  67  * AHB address must be used.
  68  *
  69  * Memory mapping
  70  * Linker address         PCI/Host address
  71  *                        0x880000 .. 0xa80000  2Mb BAR0
  72  * 0x800000 .. 0x807000   0x900000 .. 0x907000  28k DCCM
  73  * 0x840000 .. 0x857000   0x908000 .. 0x91f000  92k PERIPH
  74  */
  75
  76 /**
  77  * @fw_mapping provides memory remapping table
  78  *
  79  * array size should be in sync with the declaration in the wil6210.h
  80  */
  81 const struct fw_map fw_mapping[] = {
  82         {0x000000, 0x040000, 0x8c0000, "fw_code"}, /* FW code RAM      256k */
  83         {0x800000, 0x808000, 0x900000, "fw_data"}, /* FW data RAM       32k */
  84         {0x840000, 0x860000, 0x908000, "fw_peri"}, /* periph. data RAM 128k */
  85         {0x880000, 0x88a000, 0x880000, "rgf"},     /* various RGF       40k */
  86         {0x88a000, 0x88b000, 0x88a000, "AGC_tbl"}, /* AGC table          4k */
  87         {0x88b000, 0x88c000, 0x88b000, "rgf_ext"}, /* Pcie_ext_rgf       4k */
  88         {0x88c000, 0x88c200, 0x88c000, "mac_rgf_ext"}, /* mac_ext_rgf  512b */
  89         {0x8c0000, 0x949000, 0x8c0000, "upper"},   /* upper area       548k */
  90         /*
  91          * 920000..930000 ucode code RAM
  92          * 930000..932000 ucode data RAM
  93          * 932000..949000 back-door debug data
  94          */
  95 };
  96
  97 /**
  98  * return AHB address for given firmware/ucode internal (linker) address
  99  * @x - internal address
 100  * If address have no valid AHB mapping, return 0
 101  */
 102 static u32 wmi_addr_remap(u32 x)
 103 {
 104         uint i;
 105
 106         for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
 107                 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
 108                         return x + fw_mapping[i].host - fw_mapping[i].from;
 109         }
 110
 111         return 0;
 112 }
 113
 114 /**
 115  * Check address validity for WMI buffer; remap if needed
 116  * @ptr - internal (linker) fw/ucode address
 117  *
 118  * Valid buffer should be DWORD aligned
 119  *
 120  * return address for accessing buffer from the host;
 121  * if buffer is not valid, return NULL.
 122  */
 123 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
 124 {
 125         u32 off;
 126         u32 ptr = le32_to_cpu(ptr_);
 127
 128         if (ptr % 4)
 129                 return NULL;
 130
 131         ptr = wmi_addr_remap(ptr);
 132         if (ptr < WIL6210_FW_HOST_OFF)
 133                 return NULL;
 134
 135         off = HOSTADDR(ptr);
 136         if (off > WIL6210_MEM_SIZE - 4)
 137                 return NULL;
 138
 139         return wil->csr + off;
 140 }
 141
 142 /**
 143  * Check address validity
 144  */
 145 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
 146 {
 147         u32 off;
 148
 149         if (ptr % 4)
 150                 return NULL;
 151
 152         if (ptr < WIL6210_FW_HOST_OFF)
 153                 return NULL;
 154
 155         off = HOSTADDR(ptr);
 156         if (off > WIL6210_MEM_SIZE - 4)
 157                 return NULL;
 158
 159         return wil->csr + off;
 160 }
 161
 162 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
 163                  struct wil6210_mbox_hdr *hdr)
 164 {
 165         void __iomem *src = wmi_buffer(wil, ptr);
 166
 167         if (!src)
 168                 return -EINVAL;
 169
 170         wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
 171
 172         return 0;
 173 }
 174
 175 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
 176 {
 177         struct {
 178                 struct wil6210_mbox_hdr hdr;
 179                 struct wil6210_mbox_hdr_wmi wmi;
 180         } __packed cmd = {
 181                 .hdr = {
 182                         .type = WIL_MBOX_HDR_TYPE_WMI,
 183                         .flags = 0,
 184                         .len = cpu_to_le16(sizeof(cmd.wmi) + len),
 185                 },
 186                 .wmi = {
 187                         .mid = 0,
 188                         .id = cpu_to_le16(cmdid),
 189                 },
 190         };
 191         struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
 192         struct wil6210_mbox_ring_desc d_head;
 193         u32 next_head;
 194         void __iomem *dst;
 195         void __iomem *head = wmi_addr(wil, r->head);
 196         uint retry;
 197
 198         if (sizeof(cmd) + len > r->entry_size) {
 199                 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
 200                         (int)(sizeof(cmd) + len), r->entry_size);
 201                 return -ERANGE;
 202         }
 203
 204         might_sleep();
 205
 206         if (!test_bit(wil_status_fwready, wil->status)) {
 207                 wil_err(wil, "WMI: cannot send command while FW not ready\n");
 208                 return -EAGAIN;
 209         }
 210
 211         if (!head) {
 212                 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
 213                 return -EINVAL;
 214         }
 215         /* read Tx head till it is not busy */
 216         for (retry = 5; retry > 0; retry--) {
 217                 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
 218                 if (d_head.sync == 0)
 219                         break;
 220                 msleep(20);
 221         }
 222         if (d_head.sync != 0) {
 223                 wil_err(wil, "WMI head busy\n");
 224                 return -EBUSY;
 225         }
 226         /* next head */
 227         next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
 228         wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
 229         /* wait till FW finish with previous command */
 230         for (retry = 5; retry > 0; retry--) {
 231                 r->tail = wil_r(wil, RGF_MBOX +
 232                                 offsetof(struct wil6210_mbox_ctl, tx.tail));
 233                 if (next_head != r->tail)
 234                         break;
 235                 msleep(20);
 236         }
 237         if (next_head == r->tail) {
 238                 wil_err(wil, "WMI ring full\n");
 239                 return -EBUSY;
 240         }
 241         dst = wmi_buffer(wil, d_head.addr);
 242         if (!dst) {
 243                 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
 244                         le32_to_cpu(d_head.addr));
 245                 return -EINVAL;
 246         }
 247         cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
 248         /* set command */
 249         wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
 250         wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
 251                          sizeof(cmd), true);
 252         wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
 253                          len, true);
 254         wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
 255         wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
 256         /* mark entry as full */
 257         wil_w(wil, r->head + offsetof(struct wil6210_mbox_ring_desc, sync), 1);
 258         /* advance next ptr */
 259         wil_w(wil, RGF_MBOX + offsetof(struct wil6210_mbox_ctl, tx.head),
 260               r->head = next_head);
 261
 262         trace_wil6210_wmi_cmd(&cmd.wmi, buf, len);
 263
 264         /* interrupt to FW */
 265         wil_w(wil, RGF_USER_USER_ICR + offsetof(struct RGF_ICR, ICS),
 266               SW_INT_MBOX);
 267
 268         return 0;
 269 }
 270
 271 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
 272 {
 273         int rc;
 274
 275         mutex_lock(&wil->wmi_mutex);
 276         rc = __wmi_send(wil, cmdid, buf, len);
 277         mutex_unlock(&wil->wmi_mutex);
 278
 279         return rc;
 280 }
 281
 282 /*=== Event handlers ===*/
 283 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
 284 {
 285         struct wireless_dev *wdev = wil->wdev;
 286         struct wmi_ready_event *evt = d;
 287
 288         wil->fw_version = le32_to_cpu(evt->sw_version);
 289         wil->n_mids = evt->numof_additional_mids;
 290
 291         wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
 292                  evt->mac, wil->n_mids);
 293         /* ignore MAC address, we already have it from the boot loader */
 294         snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
 295                  "%d", wil->fw_version);
 296 }
 297
 298 static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
 299                              int len)
 300 {
 301         wil_dbg_wmi(wil, "WMI: got FW ready event\n");
 302
 303         wil_set_recovery_state(wil, fw_recovery_idle);
 304         set_bit(wil_status_fwready, wil->status);
 305         /* let the reset sequence continue */
 306         complete(&wil->wmi_ready);
 307 }
 308
 309 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 310 {
 311         struct wmi_rx_mgmt_packet_event *data = d;
 312         struct wiphy *wiphy = wil_to_wiphy(wil);
 313         struct ieee80211_mgmt *rx_mgmt_frame =
 314                         (struct ieee80211_mgmt *)data->payload;
 315         int flen = len - offsetof(struct wmi_rx_mgmt_packet_event, payload);
 316         int ch_no;
 317         u32 freq;
 318         struct ieee80211_channel *channel;
 319         s32 signal;
 320         __le16 fc;
 321         u32 d_len;
 322         u16 d_status;
 323
 324         if (flen < 0) {
 325                 wil_err(wil, "MGMT Rx: short event, len %d\n", len);
 326                 return;
 327         }
 328
 329         d_len = le32_to_cpu(data->info.len);
 330         if (d_len != flen) {
 331                 wil_err(wil,
 332                         "MGMT Rx: length mismatch, d_len %d should be %d\n",
 333                         d_len, flen);
 334                 return;
 335         }
 336
 337         ch_no = data->info.channel + 1;
 338         freq = ieee80211_channel_to_frequency(ch_no, IEEE80211_BAND_60GHZ);
 339         channel = ieee80211_get_channel(wiphy, freq);
 340         signal = data->info.sqi;
 341         d_status = le16_to_cpu(data->info.status);
 342         fc = rx_mgmt_frame->frame_control;
 343
 344         wil_dbg_wmi(wil, "MGMT Rx: channel %d MCS %d SNR %d SQI %d%%\n",
 345                     data->info.channel, data->info.mcs, data->info.snr,
 346                     data->info.sqi);
 347         wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
 348                     le16_to_cpu(fc));
 349         wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
 350                     data->info.qid, data->info.mid, data->info.cid);
 351         wil_hex_dump_wmi("MGMT Rx ", DUMP_PREFIX_OFFSET, 16, 1, rx_mgmt_frame,
 352                          d_len, true);
 353
 354         if (!channel) {
 355                 wil_err(wil, "Frame on unsupported channel\n");
 356                 return;
 357         }
 358
 359         if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
 360                 struct cfg80211_bss *bss;
 361                 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
 362                 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
 363                 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
 364                 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
 365                 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
 366                                                  u.beacon.variable);
 367                 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
 368                 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
 369                 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
 370                 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
 371                                  ie_len, true);
 372
 373                 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
 374                                                 d_len, signal, GFP_KERNEL);
 375                 if (bss) {
 376                         wil_dbg_wmi(wil, "Added BSS %pM\n",
 377                                     rx_mgmt_frame->bssid);
 378                         cfg80211_put_bss(wiphy, bss);
 379                 } else {
 380                         wil_err(wil, "cfg80211_inform_bss_frame() failed\n");
 381                 }
 382         } else {
 383                 cfg80211_rx_mgmt(wil->wdev, freq, signal,
 384                                  (void *)rx_mgmt_frame, d_len, 0);
 385         }
 386 }
 387
 388 static void wmi_evt_tx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 389 {
 390         struct wmi_tx_mgmt_packet_event *data = d;
 391         struct ieee80211_mgmt *mgmt_frame =
 392                         (struct ieee80211_mgmt *)data->payload;
 393         int flen = len - offsetof(struct wmi_tx_mgmt_packet_event, payload);
 394
 395         wil_hex_dump_wmi("MGMT Tx ", DUMP_PREFIX_OFFSET, 16, 1, mgmt_frame,
 396                          flen, true);
 397 }
 398
 399 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
 400                                   void *d, int len)
 401 {
 402         if (wil->scan_request) {
 403                 struct wmi_scan_complete_event *data = d;
 404                 bool aborted = (data->status != WMI_SCAN_SUCCESS);
 405
 406                 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
 407                 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
 408                              wil->scan_request, aborted);
 409
 410                 del_timer_sync(&wil->scan_timer);
 411                 cfg80211_scan_done(wil->scan_request, aborted);
 412                 wil->scan_request = NULL;
 413         } else {
 414                 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
 415         }
 416 }
 417
 418 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
 419 {
 420         struct net_device *ndev = wil_to_ndev(wil);
 421         struct wireless_dev *wdev = wil->wdev;
 422         struct wmi_connect_event *evt = d;
 423         int ch; /* channel number */
 424         struct station_info sinfo;
 425         u8 *assoc_req_ie, *assoc_resp_ie;
 426         size_t assoc_req_ielen, assoc_resp_ielen;
 427         /* capinfo(u16) + listen_interval(u16) + IEs */
 428         const size_t assoc_req_ie_offset = sizeof(u16) * 2;
 429         /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
 430         const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
 431
 432         if (len < sizeof(*evt)) {
 433                 wil_err(wil, "Connect event too short : %d bytes\n", len);
 434                 return;
 435         }
 436         if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
 437                    evt->assoc_resp_len) {
 438                 wil_err(wil,
 439                         "Connect event corrupted : %d != %d + %d + %d + %d\n",
 440                         len, (int)sizeof(*evt), evt->beacon_ie_len,
 441                         evt->assoc_req_len, evt->assoc_resp_len);
 442                 return;
 443         }
 444         if (evt->cid >= WIL6210_MAX_CID) {
 445                 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
 446                 return;
 447         }
 448
 449         ch = evt->channel + 1;
 450         wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
 451                     evt->bssid, ch, evt->cid);
 452         wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
 453                          evt->assoc_info, len - sizeof(*evt), true);
 454
 455         /* figure out IE's */
 456         assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
 457                                         assoc_req_ie_offset];
 458         assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
 459         if (evt->assoc_req_len <= assoc_req_ie_offset) {
 460                 assoc_req_ie = NULL;
 461                 assoc_req_ielen = 0;
 462         }
 463
 464         assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
 465                                          evt->assoc_req_len +
 466                                          assoc_resp_ie_offset];
 467         assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
 468         if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
 469                 assoc_resp_ie = NULL;
 470                 assoc_resp_ielen = 0;
 471         }
 472
 473         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 474             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 475                 if (!test_bit(wil_status_fwconnecting, wil->status)) {
 476                         wil_err(wil, "Not in connecting state\n");
 477                         return;
 478                 }
 479                 del_timer_sync(&wil->connect_timer);
 480                 cfg80211_connect_result(ndev, evt->bssid,
 481                                         assoc_req_ie, assoc_req_ielen,
 482                                         assoc_resp_ie, assoc_resp_ielen,
 483                                         WLAN_STATUS_SUCCESS, GFP_KERNEL);
 484
 485         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 486                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 487                 memset(&sinfo, 0, sizeof(sinfo));
 488
 489                 sinfo.generation = wil->sinfo_gen++;
 490
 491                 if (assoc_req_ie) {
 492                         sinfo.assoc_req_ies = assoc_req_ie;
 493                         sinfo.assoc_req_ies_len = assoc_req_ielen;
 494                 }
 495
 496                 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
 497         }
 498         clear_bit(wil_status_fwconnecting, wil->status);
 499         set_bit(wil_status_fwconnected, wil->status);
 500
 501         /* FIXME FW can transmit only ucast frames to peer */
 502         /* FIXME real ring_id instead of hard coded 0 */
 503         ether_addr_copy(wil->sta[evt->cid].addr, evt->bssid);
 504         wil->sta[evt->cid].status = wil_sta_conn_pending;
 505
 506         wil->pending_connect_cid = evt->cid;
 507         queue_work(wil->wq_service, &wil->connect_worker);
 508 }
 509
 510 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 511                                void *d, int len)
 512 {
 513         struct wmi_disconnect_event *evt = d;
 514         u16 reason_code = le16_to_cpu(evt->protocol_reason_status);
 515
 516         wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
 517                     evt->bssid, reason_code, evt->disconnect_reason);
 518
 519         wil->sinfo_gen++;
 520
 521         mutex_lock(&wil->mutex);
 522         wil6210_disconnect(wil, evt->bssid, reason_code, true);
 523         mutex_unlock(&wil->mutex);
 524 }
 525
 526 /*
 527  * Firmware reports EAPOL frame using WME event.
 528  * Reconstruct Ethernet frame and deliver it via normal Rx
 529  */
 530 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
 531                              void *d, int len)
 532 {
 533         struct net_device *ndev = wil_to_ndev(wil);
 534         struct wmi_eapol_rx_event *evt = d;
 535         u16 eapol_len = le16_to_cpu(evt->eapol_len);
 536         int sz = eapol_len + ETH_HLEN;
 537         struct sk_buff *skb;
 538         struct ethhdr *eth;
 539         int cid;
 540         struct wil_net_stats *stats = NULL;
 541
 542         wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
 543                     evt->src_mac);
 544
 545         cid = wil_find_cid(wil, evt->src_mac);
 546         if (cid >= 0)
 547                 stats = &wil->sta[cid].stats;
 548
 549         if (eapol_len > 196) { /* TODO: revisit size limit */
 550                 wil_err(wil, "EAPOL too large\n");
 551                 return;
 552         }
 553
 554         skb = alloc_skb(sz, GFP_KERNEL);
 555         if (!skb) {
 556                 wil_err(wil, "Failed to allocate skb\n");
 557                 return;
 558         }
 559
 560         eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
 561         ether_addr_copy(eth->h_dest, ndev->dev_addr);
 562         ether_addr_copy(eth->h_source, evt->src_mac);
 563         eth->h_proto = cpu_to_be16(ETH_P_PAE);
 564         memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
 565         skb->protocol = eth_type_trans(skb, ndev);
 566         if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
 567                 ndev->stats.rx_packets++;
 568                 ndev->stats.rx_bytes += sz;
 569                 if (stats) {
 570                         stats->rx_packets++;
 571                         stats->rx_bytes += sz;
 572                 }
 573         } else {
 574                 ndev->stats.rx_dropped++;
 575                 if (stats)
 576                         stats->rx_dropped++;
 577         }
 578 }
 579
 580 static void wmi_evt_vring_en(struct wil6210_priv *wil, int id, void *d, int len)
 581 {
 582         struct wmi_vring_en_event *evt = d;
 583         u8 vri = evt->vring_index;
 584
 585         wil_dbg_wmi(wil, "Enable vring %d\n", vri);
 586
 587         if (vri >= ARRAY_SIZE(wil->vring_tx)) {
 588                 wil_err(wil, "Enable for invalid vring %d\n", vri);
 589                 return;
 590         }
 591         wil->vring_tx_data[vri].dot1x_open = true;
 592         if (vri == wil->bcast_vring) /* no BA for bcast */
 593                 return;
 594         if (agg_wsize >= 0)
 595                 wil_addba_tx_request(wil, vri, agg_wsize);
 596 }
 597
 598 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 599                               int len)
 600 {
 601         struct wmi_vring_ba_status_event *evt = d;
 602         struct vring_tx_data *txdata;
 603
 604         wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d AMSDU%s\n",
 605                     evt->ringid,
 606                     evt->status == WMI_BA_AGREED ? "OK" : "N/A",
 607                     evt->agg_wsize, __le16_to_cpu(evt->ba_timeout),
 608                     evt->amsdu ? "+" : "-");
 609
 610         if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
 611                 wil_err(wil, "invalid ring id %d\n", evt->ringid);
 612                 return;
 613         }
 614
 615         if (evt->status != WMI_BA_AGREED) {
 616                 evt->ba_timeout = 0;
 617                 evt->agg_wsize = 0;
 618                 evt->amsdu = 0;
 619         }
 620
 621         txdata = &wil->vring_tx_data[evt->ringid];
 622
 623         txdata->agg_timeout = le16_to_cpu(evt->ba_timeout);
 624         txdata->agg_wsize = evt->agg_wsize;
 625         txdata->agg_amsdu = evt->amsdu;
 626         txdata->addba_in_progress = false;
 627 }
 628
 629 static void wmi_evt_addba_rx_req(struct wil6210_priv *wil, int id, void *d,
 630                                  int len)
 631 {
 632         struct wmi_rcp_addba_req_event *evt = d;
 633
 634         wil_addba_rx_request(wil, evt->cidxtid, evt->dialog_token,
 635                              evt->ba_param_set, evt->ba_timeout,
 636                              evt->ba_seq_ctrl);
 637 }
 638
 639 static void wmi_evt_delba(struct wil6210_priv *wil, int id, void *d, int len)
 640 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
 641 {
 642         struct wmi_delba_event *evt = d;
 643         u8 cid, tid;
 644         u16 reason = __le16_to_cpu(evt->reason);
 645         struct wil_sta_info *sta;
 646         struct wil_tid_ampdu_rx *r;
 647
 648         might_sleep();
 649         parse_cidxtid(evt->cidxtid, &cid, &tid);
 650         wil_dbg_wmi(wil, "DELBA CID %d TID %d from %s reason %d\n",
 651                     cid, tid,
 652                     evt->from_initiator ? "originator" : "recipient",
 653                     reason);
 654         if (!evt->from_initiator) {
 655                 int i;
 656                 /* find Tx vring it belongs to */
 657                 for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) {
 658                         if ((wil->vring2cid_tid[i][0] == cid) &&
 659                             (wil->vring2cid_tid[i][1] == tid)) {
 660                                 struct vring_tx_data *txdata =
 661                                         &wil->vring_tx_data[i];
 662
 663                                 wil_dbg_wmi(wil, "DELBA Tx vring %d\n", i);
 664                                 txdata->agg_timeout = 0;
 665                                 txdata->agg_wsize = 0;
 666                                 txdata->addba_in_progress = false;
 667
 668                                 break; /* max. 1 matching ring */
 669                         }
 670                 }
 671                 if (i >= ARRAY_SIZE(wil->vring2cid_tid))
 672                         wil_err(wil, "DELBA: unable to find Tx vring\n");
 673                 return;
 674         }
 675
 676         sta = &wil->sta[cid];
 677
 678         spin_lock_bh(&sta->tid_rx_lock);
 679
 680         r = sta->tid_rx[tid];
 681         sta->tid_rx[tid] = NULL;
 682         wil_tid_ampdu_rx_free(wil, r);
 683
 684         spin_unlock_bh(&sta->tid_rx_lock);
 685 }
 686
 687 static const struct {
 688         int eventid;
 689         void (*handler)(struct wil6210_priv *wil, int eventid,
 690                         void *data, int data_len);
 691 } wmi_evt_handlers[] = {
 692         {WMI_READY_EVENTID,             wmi_evt_ready},
 693         {WMI_FW_READY_EVENTID,          wmi_evt_fw_ready},
 694         {WMI_RX_MGMT_PACKET_EVENTID,    wmi_evt_rx_mgmt},
 695         {WMI_TX_MGMT_PACKET_EVENTID,            wmi_evt_tx_mgmt},
 696         {WMI_SCAN_COMPLETE_EVENTID,     wmi_evt_scan_complete},
 697         {WMI_CONNECT_EVENTID,           wmi_evt_connect},
 698         {WMI_DISCONNECT_EVENTID,        wmi_evt_disconnect},
 699         {WMI_EAPOL_RX_EVENTID,          wmi_evt_eapol_rx},
 700         {WMI_BA_STATUS_EVENTID,         wmi_evt_ba_status},
 701         {WMI_RCP_ADDBA_REQ_EVENTID,     wmi_evt_addba_rx_req},
 702         {WMI_DELBA_EVENTID,             wmi_evt_delba},
 703         {WMI_VRING_EN_EVENTID,          wmi_evt_vring_en},
 704 };
 705
 706 /*
 707  * Run in IRQ context
 708  * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
 709  * that will be eventually handled by the @wmi_event_worker in the thread
 710  * context of thread "wil6210_wmi"
 711  */
 712 void wmi_recv_cmd(struct wil6210_priv *wil)
 713 {
 714         struct wil6210_mbox_ring_desc d_tail;
 715         struct wil6210_mbox_hdr hdr;
 716         struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
 717         struct pending_wmi_event *evt;
 718         u8 *cmd;
 719         void __iomem *src;
 720         ulong flags;
 721         unsigned n;
 722
 723         if (!test_bit(wil_status_reset_done, wil->status)) {
 724                 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 725                 return;
 726         }
 727
 728         for (n = 0;; n++) {
 729                 u16 len;
 730                 bool q;
 731
 732                 r->head = wil_r(wil, RGF_MBOX +
 733                                 offsetof(struct wil6210_mbox_ctl, rx.head));
 734                 if (r->tail == r->head)
 735                         break;
 736
 737                 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
 738                             r->head, r->tail);
 739                 /* read cmd descriptor from tail */
 740                 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
 741                                      sizeof(struct wil6210_mbox_ring_desc));
 742                 if (d_tail.sync == 0) {
 743                         wil_err(wil, "Mbox evt not owned by FW?\n");
 744                         break;
 745                 }
 746
 747                 /* read cmd header from descriptor */
 748                 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
 749                         wil_err(wil, "Mbox evt at 0x%08x?\n",
 750                                 le32_to_cpu(d_tail.addr));
 751                         break;
 752                 }
 753                 len = le16_to_cpu(hdr.len);
 754                 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
 755                             le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
 756                             hdr.flags);
 757
 758                 /* read cmd buffer from descriptor */
 759                 src = wmi_buffer(wil, d_tail.addr) +
 760                       sizeof(struct wil6210_mbox_hdr);
 761                 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
 762                                              event.wmi) + len, 4),
 763                               GFP_KERNEL);
 764                 if (!evt)
 765                         break;
 766
 767                 evt->event.hdr = hdr;
 768                 cmd = (void *)&evt->event.wmi;
 769                 wil_memcpy_fromio_32(cmd, src, len);
 770                 /* mark entry as empty */
 771                 wil_w(wil, r->tail +
 772                       offsetof(struct wil6210_mbox_ring_desc, sync), 0);
 773                 /* indicate */
 774                 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
 775                     (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
 776                         struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi;
 777                         u16 id = le16_to_cpu(wmi->id);
 778                         u32 tstamp = le32_to_cpu(wmi->timestamp);
 779
 780                         wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 781                                     id, wmi->mid, tstamp);
 782                         trace_wil6210_wmi_event(wmi, &wmi[1],
 783                                                 len - sizeof(*wmi));
 784                 }
 785                 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
 786                                  &evt->event.hdr, sizeof(hdr) + len, true);
 787
 788                 /* advance tail */
 789                 r->tail = r->base + ((r->tail - r->base +
 790                           sizeof(struct wil6210_mbox_ring_desc)) % r->size);
 791                 wil_w(wil, RGF_MBOX +
 792                       offsetof(struct wil6210_mbox_ctl, rx.tail), r->tail);
 793
 794                 /* add to the pending list */
 795                 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 796                 list_add_tail(&evt->list, &wil->pending_wmi_ev);
 797                 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 798                 q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
 799                 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
 800         }
 801         /* normally, 1 event per IRQ should be processed */
 802         wil_dbg_wmi(wil, "%s -> %d events queued\n", __func__, n);
 803 }
 804
 805 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 806              u16 reply_id, void *reply, u8 reply_size, int to_msec)
 807 {
 808         int rc;
 809         unsigned long remain;
 810
 811         mutex_lock(&wil->wmi_mutex);
 812
 813         rc = __wmi_send(wil, cmdid, buf, len);
 814         if (rc)
 815                 goto out;
 816
 817         wil->reply_id = reply_id;
 818         wil->reply_buf = reply;
 819         wil->reply_size = reply_size;
 820         remain = wait_for_completion_timeout(&wil->wmi_call,
 821                                              msecs_to_jiffies(to_msec));
 822         if (0 == remain) {
 823                 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 824                         cmdid, reply_id, to_msec);
 825                 rc = -ETIME;
 826         } else {
 827                 wil_dbg_wmi(wil,
 828                             "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
 829                             cmdid, reply_id,
 830                             to_msec - jiffies_to_msecs(remain));
 831         }
 832         wil->reply_id = 0;
 833         wil->reply_buf = NULL;
 834         wil->reply_size = 0;
 835  out:
 836         mutex_unlock(&wil->wmi_mutex);
 837
 838         return rc;
 839 }
 840
 841 int wmi_echo(struct wil6210_priv *wil)
 842 {
 843         struct wmi_echo_cmd cmd = {
 844                 .value = cpu_to_le32(0x12345678),
 845         };
 846
 847         return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
 848                         WMI_ECHO_RSP_EVENTID, NULL, 0, 50);
 849 }
 850
 851 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
 852 {
 853         struct wmi_set_mac_address_cmd cmd;
 854
 855         ether_addr_copy(cmd.mac, addr);
 856
 857         wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
 858
 859         return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
 860 }
 861
 862 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype,
 863                   u8 chan, u8 hidden_ssid)
 864 {
 865         int rc;
 866
 867         struct wmi_pcp_start_cmd cmd = {
 868                 .bcon_interval = cpu_to_le16(bi),
 869                 .network_type = wmi_nettype,
 870                 .disable_sec_offload = 1,
 871                 .channel = chan - 1,
 872                 .pcp_max_assoc_sta = max_assoc_sta,
 873                 .hidden_ssid = hidden_ssid,
 874         };
 875         struct {
 876                 struct wil6210_mbox_hdr_wmi wmi;
 877                 struct wmi_pcp_started_event evt;
 878         } __packed reply;
 879
 880         if (!wil->privacy)
 881                 cmd.disable_sec = 1;
 882
 883         if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
 884             (cmd.pcp_max_assoc_sta <= 0)) {
 885                 wil_info(wil,
 886                          "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
 887                          max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
 888                 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
 889         }
 890
 891         /*
 892          * Processing time may be huge, in case of secure AP it takes about
 893          * 3500ms for FW to start AP
 894          */
 895         rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
 896                       WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
 897         if (rc)
 898                 return rc;
 899
 900         if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
 901                 rc = -EINVAL;
 902
 903         return rc;
 904 }
 905
 906 int wmi_pcp_stop(struct wil6210_priv *wil)
 907 {
 908         return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
 909                         WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
 910 }
 911
 912 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
 913 {
 914         struct wmi_set_ssid_cmd cmd = {
 915                 .ssid_len = cpu_to_le32(ssid_len),
 916         };
 917
 918         if (ssid_len > sizeof(cmd.ssid))
 919                 return -EINVAL;
 920
 921         memcpy(cmd.ssid, ssid, ssid_len);
 922
 923         return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
 924 }
 925
 926 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
 927 {
 928         int rc;
 929         struct {
 930                 struct wil6210_mbox_hdr_wmi wmi;
 931                 struct wmi_set_ssid_cmd cmd;
 932         } __packed reply;
 933         int len; /* reply.cmd.ssid_len in CPU order */
 934
 935         rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
 936                       &reply, sizeof(reply), 20);
 937         if (rc)
 938                 return rc;
 939
 940         len = le32_to_cpu(reply.cmd.ssid_len);
 941         if (len > sizeof(reply.cmd.ssid))
 942                 return -EINVAL;
 943
 944         *ssid_len = len;
 945         memcpy(ssid, reply.cmd.ssid, len);
 946
 947         return 0;
 948 }
 949
 950 int wmi_set_channel(struct wil6210_priv *wil, int channel)
 951 {
 952         struct wmi_set_pcp_channel_cmd cmd = {
 953                 .channel = channel - 1,
 954         };
 955
 956         return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
 957 }
 958
 959 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
 960 {
 961         int rc;
 962         struct {
 963                 struct wil6210_mbox_hdr_wmi wmi;
 964                 struct wmi_set_pcp_channel_cmd cmd;
 965         } __packed reply;
 966
 967         rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
 968                       WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
 969         if (rc)
 970                 return rc;
 971
 972         if (reply.cmd.channel > 3)
 973                 return -EINVAL;
 974
 975         *channel = reply.cmd.channel + 1;
 976
 977         return 0;
 978 }
 979
 980 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
 981 {
 982         struct wmi_p2p_cfg_cmd cmd = {
 983                 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
 984                 .channel = channel - 1,
 985         };
 986
 987         return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
 988 }
 989
 990 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
 991                        const void *mac_addr, int key_usage)
 992 {
 993         struct wmi_delete_cipher_key_cmd cmd = {
 994                 .key_index = key_index,
 995         };
 996
 997         if (mac_addr)
 998                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
 999
1000         return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1001 }
1002
1003 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
1004                        const void *mac_addr, int key_len, const void *key,
1005                        int key_usage)
1006 {
1007         struct wmi_add_cipher_key_cmd cmd = {
1008                 .key_index = key_index,
1009                 .key_usage = key_usage,
1010                 .key_len = key_len,
1011         };
1012
1013         if (!key || (key_len > sizeof(cmd.key)))
1014                 return -EINVAL;
1015
1016         memcpy(cmd.key, key, key_len);
1017         if (mac_addr)
1018                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1019
1020         return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1021 }
1022
1023 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
1024 {
1025         static const char *const names[] = {
1026                 [WMI_FRAME_BEACON]      = "BEACON",
1027                 [WMI_FRAME_PROBE_REQ]   = "PROBE_REQ",
1028                 [WMI_FRAME_PROBE_RESP]  = "WMI_FRAME_PROBE_RESP",
1029                 [WMI_FRAME_ASSOC_REQ]   = "WMI_FRAME_ASSOC_REQ",
1030                 [WMI_FRAME_ASSOC_RESP]  = "WMI_FRAME_ASSOC_RESP",
1031         };
1032         int rc;
1033         u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
1034         struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
1035
1036         if (!cmd) {
1037                 rc = -ENOMEM;
1038                 goto out;
1039         }
1040         if (!ie)
1041                 ie_len = 0;
1042
1043         cmd->mgmt_frm_type = type;
1044         /* BUG: FW API define ieLen as u8. Will fix FW */
1045         cmd->ie_len = cpu_to_le16(ie_len);
1046         memcpy(cmd->ie_info, ie, ie_len);
1047         rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
1048         kfree(cmd);
1049 out:
1050         if (rc) {
1051                 const char *name = type < ARRAY_SIZE(names) ?
1052                                    names[type] : "??";
1053                 wil_err(wil, "set_ie(%d %s) failed : %d\n", type, name, rc);
1054         }
1055
1056         return rc;
1057 }
1058
1059 /**
1060  * wmi_rxon - turn radio on/off
1061  * @on:         turn on if true, off otherwise
1062  *
1063  * Only switch radio. Channel should be set separately.
1064  * No timeout for rxon - radio turned on forever unless some other call
1065  * turns it off
1066  */
1067 int wmi_rxon(struct wil6210_priv *wil, bool on)
1068 {
1069         int rc;
1070         struct {
1071                 struct wil6210_mbox_hdr_wmi wmi;
1072                 struct wmi_listen_started_event evt;
1073         } __packed reply;
1074
1075         wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1076
1077         if (on) {
1078                 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1079                               WMI_LISTEN_STARTED_EVENTID,
1080                               &reply, sizeof(reply), 100);
1081                 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1082                         rc = -EINVAL;
1083         } else {
1084                 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1085                               WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1086         }
1087
1088         return rc;
1089 }
1090
1091 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1092 {
1093         struct wireless_dev *wdev = wil->wdev;
1094         struct net_device *ndev = wil_to_ndev(wil);
1095         struct wmi_cfg_rx_chain_cmd cmd = {
1096                 .action = WMI_RX_CHAIN_ADD,
1097                 .rx_sw_ring = {
1098                         .max_mpdu_size = cpu_to_le16(wil_mtu2macbuf(mtu_max)),
1099                         .ring_mem_base = cpu_to_le64(vring->pa),
1100                         .ring_size = cpu_to_le16(vring->size),
1101                 },
1102                 .mid = 0, /* TODO - what is it? */
1103                 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1104                 .reorder_type = WMI_RX_SW_REORDER,
1105                 .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh),
1106         };
1107         struct {
1108                 struct wil6210_mbox_hdr_wmi wmi;
1109                 struct wmi_cfg_rx_chain_done_event evt;
1110         } __packed evt;
1111         int rc;
1112
1113         if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1114                 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1115
1116                 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1117                 if (ch)
1118                         cmd.sniffer_cfg.channel = ch->hw_value - 1;
1119                 cmd.sniffer_cfg.phy_info_mode =
1120                         cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1121                 cmd.sniffer_cfg.phy_support =
1122                         cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1123                                     ? WMI_SNIFFER_CP : WMI_SNIFFER_DP);
1124         } else {
1125                 /* Initialize offload (in non-sniffer mode).
1126                  * Linux IP stack always calculates IP checksum
1127                  * HW always calculate TCP/UDP checksum
1128                  */
1129                 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1130         }
1131
1132         if (rx_align_2)
1133                 cmd.l2_802_3_offload_ctrl |=
1134                                 L2_802_3_OFFLOAD_CTRL_SNAP_KEEP_MSK;
1135
1136         /* typical time for secure PCP is 840ms */
1137         rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1138                       WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1139         if (rc)
1140                 return rc;
1141
1142         vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1143
1144         wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1145                      le32_to_cpu(evt.evt.status), vring->hwtail);
1146
1147         if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1148                 rc = -EINVAL;
1149
1150         return rc;
1151 }
1152
1153 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf)
1154 {
1155         int rc;
1156         struct wmi_temp_sense_cmd cmd = {
1157                 .measure_baseband_en = cpu_to_le32(!!t_bb),
1158                 .measure_rf_en = cpu_to_le32(!!t_rf),
1159                 .measure_mode = cpu_to_le32(TEMPERATURE_MEASURE_NOW),
1160         };
1161         struct {
1162                 struct wil6210_mbox_hdr_wmi wmi;
1163                 struct wmi_temp_sense_done_event evt;
1164         } __packed reply;
1165
1166         rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1167                       WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1168         if (rc)
1169                 return rc;
1170
1171         if (t_bb)
1172                 *t_bb = le32_to_cpu(reply.evt.baseband_t1000);
1173         if (t_rf)
1174                 *t_rf = le32_to_cpu(reply.evt.rf_t1000);
1175
1176         return 0;
1177 }
1178
1179 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason)
1180 {
1181         int rc;
1182         u16 reason_code;
1183         struct wmi_disconnect_sta_cmd cmd = {
1184                 .disconnect_reason = cpu_to_le16(reason),
1185         };
1186         struct {
1187                 struct wil6210_mbox_hdr_wmi wmi;
1188                 struct wmi_disconnect_event evt;
1189         } __packed reply;
1190
1191         ether_addr_copy(cmd.dst_mac, mac);
1192
1193         wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1194
1195         rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd),
1196                       WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 1000);
1197         /* failure to disconnect in reasonable time treated as FW error */
1198         if (rc) {
1199                 wil_fw_error_recovery(wil);
1200                 return rc;
1201         }
1202
1203         /* call event handler manually after processing wmi_call,
1204          * to avoid deadlock - disconnect event handler acquires wil->mutex
1205          * while it is already held here
1206          */
1207         reason_code = le16_to_cpu(reply.evt.protocol_reason_status);
1208
1209         wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
1210                     reply.evt.bssid, reason_code,
1211                     reply.evt.disconnect_reason);
1212
1213         wil->sinfo_gen++;
1214         wil6210_disconnect(wil, reply.evt.bssid, reason_code, true);
1215
1216         return 0;
1217 }
1218
1219 int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout)
1220 {
1221         struct wmi_vring_ba_en_cmd cmd = {
1222                 .ringid = ringid,
1223                 .agg_max_wsize = size,
1224                 .ba_timeout = cpu_to_le16(timeout),
1225                 .amsdu = 0,
1226         };
1227
1228         wil_dbg_wmi(wil, "%s(ring %d size %d timeout %d)\n", __func__,
1229                     ringid, size, timeout);
1230
1231         return wmi_send(wil, WMI_VRING_BA_EN_CMDID, &cmd, sizeof(cmd));
1232 }
1233
1234 int wmi_delba_tx(struct wil6210_priv *wil, u8 ringid, u16 reason)
1235 {
1236         struct wmi_vring_ba_dis_cmd cmd = {
1237                 .ringid = ringid,
1238                 .reason = cpu_to_le16(reason),
1239         };
1240
1241         wil_dbg_wmi(wil, "%s(ring %d reason %d)\n", __func__,
1242                     ringid, reason);
1243
1244         return wmi_send(wil, WMI_VRING_BA_DIS_CMDID, &cmd, sizeof(cmd));
1245 }
1246
1247 int wmi_delba_rx(struct wil6210_priv *wil, u8 cidxtid, u16 reason)
1248 {
1249         struct wmi_rcp_delba_cmd cmd = {
1250                 .cidxtid = cidxtid,
1251                 .reason = cpu_to_le16(reason),
1252         };
1253
1254         wil_dbg_wmi(wil, "%s(CID %d TID %d reason %d)\n", __func__,
1255                     cidxtid & 0xf, (cidxtid >> 4) & 0xf, reason);
1256
1257         return wmi_send(wil, WMI_RCP_DELBA_CMDID, &cmd, sizeof(cmd));
1258 }
1259
1260 int wmi_addba_rx_resp(struct wil6210_priv *wil, u8 cid, u8 tid, u8 token,
1261                       u16 status, bool amsdu, u16 agg_wsize, u16 timeout)
1262 {
1263         int rc;
1264         struct wmi_rcp_addba_resp_cmd cmd = {
1265                 .cidxtid = mk_cidxtid(cid, tid),
1266                 .dialog_token = token,
1267                 .status_code = cpu_to_le16(status),
1268                 /* bit 0: A-MSDU supported
1269                  * bit 1: policy (should be 0 for us)
1270                  * bits 2..5: TID
1271                  * bits 6..15: buffer size
1272                  */
1273                 .ba_param_set = cpu_to_le16((amsdu ? 1 : 0) | (tid << 2) |
1274                                             (agg_wsize << 6)),
1275                 .ba_timeout = cpu_to_le16(timeout),
1276         };
1277         struct {
1278                 struct wil6210_mbox_hdr_wmi wmi;
1279                 struct wmi_rcp_addba_resp_sent_event evt;
1280         } __packed reply;
1281
1282         wil_dbg_wmi(wil,
1283                     "ADDBA response for CID %d TID %d size %d timeout %d status %d AMSDU%s\n",
1284                     cid, tid, agg_wsize, timeout, status, amsdu ? "+" : "-");
1285
1286         rc = wmi_call(wil, WMI_RCP_ADDBA_RESP_CMDID, &cmd, sizeof(cmd),
1287                       WMI_RCP_ADDBA_RESP_SENT_EVENTID, &reply, sizeof(reply),
1288                       100);
1289         if (rc)
1290                 return rc;
1291
1292         if (reply.evt.status) {
1293                 wil_err(wil, "ADDBA response failed with status %d\n",
1294                         le16_to_cpu(reply.evt.status));
1295                 rc = -EINVAL;
1296         }
1297
1298         return rc;
1299 }
1300
1301 void wmi_event_flush(struct wil6210_priv *wil)
1302 {
1303         struct pending_wmi_event *evt, *t;
1304
1305         wil_dbg_wmi(wil, "%s()\n", __func__);
1306
1307         list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1308                 list_del(&evt->list);
1309                 kfree(evt);
1310         }
1311 }
1312
1313 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1314                                  void *d, int len)
1315 {
1316         uint i;
1317
1318         for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1319                 if (wmi_evt_handlers[i].eventid == id) {
1320                         wmi_evt_handlers[i].handler(wil, id, d, len);
1321                         return true;
1322                 }
1323         }
1324
1325         return false;
1326 }
1327
1328 static void wmi_event_handle(struct wil6210_priv *wil,
1329                              struct wil6210_mbox_hdr *hdr)
1330 {
1331         u16 len = le16_to_cpu(hdr->len);
1332
1333         if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1334             (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1335                 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1336                 void *evt_data = (void *)(&wmi[1]);
1337                 u16 id = le16_to_cpu(wmi->id);
1338
1339                 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1340                             id, wil->reply_id);
1341                 /* check if someone waits for this event */
1342                 if (wil->reply_id && wil->reply_id == id) {
1343                         if (wil->reply_buf) {
1344                                 memcpy(wil->reply_buf, wmi,
1345                                        min(len, wil->reply_size));
1346                         } else {
1347                                 wmi_evt_call_handler(wil, id, evt_data,
1348                                                      len - sizeof(*wmi));
1349                         }
1350                         wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
1351                         complete(&wil->wmi_call);
1352                         return;
1353                 }
1354                 /* unsolicited event */
1355                 /* search for handler */
1356                 if (!wmi_evt_call_handler(wil, id, evt_data,
1357                                           len - sizeof(*wmi))) {
1358                         wil_info(wil, "Unhandled event 0x%04x\n", id);
1359                 }
1360         } else {
1361                 wil_err(wil, "Unknown event type\n");
1362                 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1363                                hdr, sizeof(*hdr) + len, true);
1364         }
1365 }
1366
1367 /*
1368  * Retrieve next WMI event from the pending list
1369  */
1370 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1371 {
1372         ulong flags;
1373         struct list_head *ret = NULL;
1374
1375         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1376
1377         if (!list_empty(&wil->pending_wmi_ev)) {
1378                 ret = wil->pending_wmi_ev.next;
1379                 list_del(ret);
1380         }
1381
1382         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1383
1384         return ret;
1385 }
1386
1387 /*
1388  * Handler for the WMI events
1389  */
1390 void wmi_event_worker(struct work_struct *work)
1391 {
1392         struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1393                                                  wmi_event_worker);
1394         struct pending_wmi_event *evt;
1395         struct list_head *lh;
1396
1397         wil_dbg_wmi(wil, "Start %s\n", __func__);
1398         while ((lh = next_wmi_ev(wil)) != NULL) {
1399                 evt = list_entry(lh, struct pending_wmi_event, list);
1400                 wmi_event_handle(wil, &evt->event.hdr);
1401                 kfree(evt);
1402         }
1403         wil_dbg_wmi(wil, "Finished %s\n", __func__);
1404 }