kernel/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         wil_set_recovery_state(wil, fw_recovery_idle);
 298         set_bit(wil_status_fwready, wil->status);
 299         /* let the reset sequence continue */
 300         complete(&wil->wmi_ready);
 301 }
 302
 303 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 304 {
 305         struct wmi_rx_mgmt_packet_event *data = d;
 306         struct wiphy *wiphy = wil_to_wiphy(wil);
 307         struct ieee80211_mgmt *rx_mgmt_frame =
 308                         (struct ieee80211_mgmt *)data->payload;
 309         int flen = len - offsetof(struct wmi_rx_mgmt_packet_event, payload);
 310         int ch_no;
 311         u32 freq;
 312         struct ieee80211_channel *channel;
 313         s32 signal;
 314         __le16 fc;
 315         u32 d_len;
 316         u16 d_status;
 317
 318         if (flen < 0) {
 319                 wil_err(wil, "MGMT Rx: short event, len %d\n", len);
 320                 return;
 321         }
 322
 323         d_len = le32_to_cpu(data->info.len);
 324         if (d_len != flen) {
 325                 wil_err(wil,
 326                         "MGMT Rx: length mismatch, d_len %d should be %d\n",
 327                         d_len, flen);
 328                 return;
 329         }
 330
 331         ch_no = data->info.channel + 1;
 332         freq = ieee80211_channel_to_frequency(ch_no, IEEE80211_BAND_60GHZ);
 333         channel = ieee80211_get_channel(wiphy, freq);
 334         signal = data->info.sqi;
 335         d_status = le16_to_cpu(data->info.status);
 336         fc = rx_mgmt_frame->frame_control;
 337
 338         wil_dbg_wmi(wil, "MGMT Rx: channel %d MCS %d SNR %d SQI %d%%\n",
 339                     data->info.channel, data->info.mcs, data->info.snr,
 340                     data->info.sqi);
 341         wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
 342                     le16_to_cpu(fc));
 343         wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
 344                     data->info.qid, data->info.mid, data->info.cid);
 345         wil_hex_dump_wmi("MGMT Rx ", DUMP_PREFIX_OFFSET, 16, 1, rx_mgmt_frame,
 346                          d_len, true);
 347
 348         if (!channel) {
 349                 wil_err(wil, "Frame on unsupported channel\n");
 350                 return;
 351         }
 352
 353         if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
 354                 struct cfg80211_bss *bss;
 355                 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
 356                 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
 357                 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
 358                 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
 359                 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
 360                                                  u.beacon.variable);
 361                 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
 362                 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
 363                 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
 364                 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
 365                                  ie_len, true);
 366
 367                 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
 368                                                 d_len, signal, GFP_KERNEL);
 369                 if (bss) {
 370                         wil_dbg_wmi(wil, "Added BSS %pM\n",
 371                                     rx_mgmt_frame->bssid);
 372                         cfg80211_put_bss(wiphy, bss);
 373                 } else {
 374                         wil_err(wil, "cfg80211_inform_bss_frame() failed\n");
 375                 }
 376         } else {
 377                 cfg80211_rx_mgmt(wil->wdev, freq, signal,
 378                                  (void *)rx_mgmt_frame, d_len, 0);
 379         }
 380 }
 381
 382 static void wmi_evt_tx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 383 {
 384         struct wmi_tx_mgmt_packet_event *data = d;
 385         struct ieee80211_mgmt *mgmt_frame =
 386                         (struct ieee80211_mgmt *)data->payload;
 387         int flen = len - offsetof(struct wmi_tx_mgmt_packet_event, payload);
 388
 389         wil_hex_dump_wmi("MGMT Tx ", DUMP_PREFIX_OFFSET, 16, 1, mgmt_frame,
 390                          flen, true);
 391 }
 392
 393 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
 394                                   void *d, int len)
 395 {
 396         if (wil->scan_request) {
 397                 struct wmi_scan_complete_event *data = d;
 398                 bool aborted = (data->status != WMI_SCAN_SUCCESS);
 399
 400                 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
 401                 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
 402                              wil->scan_request, aborted);
 403
 404                 del_timer_sync(&wil->scan_timer);
 405                 cfg80211_scan_done(wil->scan_request, aborted);
 406                 wil->scan_request = NULL;
 407         } else {
 408                 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
 409         }
 410 }
 411
 412 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
 413 {
 414         struct net_device *ndev = wil_to_ndev(wil);
 415         struct wireless_dev *wdev = wil->wdev;
 416         struct wmi_connect_event *evt = d;
 417         int ch; /* channel number */
 418         struct station_info sinfo;
 419         u8 *assoc_req_ie, *assoc_resp_ie;
 420         size_t assoc_req_ielen, assoc_resp_ielen;
 421         /* capinfo(u16) + listen_interval(u16) + IEs */
 422         const size_t assoc_req_ie_offset = sizeof(u16) * 2;
 423         /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
 424         const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
 425
 426         if (len < sizeof(*evt)) {
 427                 wil_err(wil, "Connect event too short : %d bytes\n", len);
 428                 return;
 429         }
 430         if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
 431                    evt->assoc_resp_len) {
 432                 wil_err(wil,
 433                         "Connect event corrupted : %d != %d + %d + %d + %d\n",
 434                         len, (int)sizeof(*evt), evt->beacon_ie_len,
 435                         evt->assoc_req_len, evt->assoc_resp_len);
 436                 return;
 437         }
 438         if (evt->cid >= WIL6210_MAX_CID) {
 439                 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
 440                 return;
 441         }
 442
 443         ch = evt->channel + 1;
 444         wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n",
 445                     evt->bssid, ch, evt->cid);
 446         wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
 447                          evt->assoc_info, len - sizeof(*evt), true);
 448
 449         /* figure out IE's */
 450         assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
 451                                         assoc_req_ie_offset];
 452         assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
 453         if (evt->assoc_req_len <= assoc_req_ie_offset) {
 454                 assoc_req_ie = NULL;
 455                 assoc_req_ielen = 0;
 456         }
 457
 458         assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
 459                                          evt->assoc_req_len +
 460                                          assoc_resp_ie_offset];
 461         assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
 462         if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
 463                 assoc_resp_ie = NULL;
 464                 assoc_resp_ielen = 0;
 465         }
 466
 467         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 468             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 469                 if (!test_bit(wil_status_fwconnecting, wil->status)) {
 470                         wil_err(wil, "Not in connecting state\n");
 471                         return;
 472                 }
 473                 del_timer_sync(&wil->connect_timer);
 474                 cfg80211_connect_result(ndev, evt->bssid,
 475                                         assoc_req_ie, assoc_req_ielen,
 476                                         assoc_resp_ie, assoc_resp_ielen,
 477                                         WLAN_STATUS_SUCCESS, GFP_KERNEL);
 478
 479         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 480                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 481                 memset(&sinfo, 0, sizeof(sinfo));
 482
 483                 sinfo.generation = wil->sinfo_gen++;
 484
 485                 if (assoc_req_ie) {
 486                         sinfo.assoc_req_ies = assoc_req_ie;
 487                         sinfo.assoc_req_ies_len = assoc_req_ielen;
 488                 }
 489
 490                 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
 491         }
 492         clear_bit(wil_status_fwconnecting, wil->status);
 493         set_bit(wil_status_fwconnected, wil->status);
 494
 495         /* FIXME FW can transmit only ucast frames to peer */
 496         /* FIXME real ring_id instead of hard coded 0 */
 497         ether_addr_copy(wil->sta[evt->cid].addr, evt->bssid);
 498         wil->sta[evt->cid].status = wil_sta_conn_pending;
 499
 500         wil->pending_connect_cid = evt->cid;
 501         queue_work(wil->wq_service, &wil->connect_worker);
 502 }
 503
 504 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 505                                void *d, int len)
 506 {
 507         struct wmi_disconnect_event *evt = d;
 508         u16 reason_code = le16_to_cpu(evt->protocol_reason_status);
 509
 510         wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
 511                     evt->bssid, reason_code, evt->disconnect_reason);
 512
 513         wil->sinfo_gen++;
 514
 515         mutex_lock(&wil->mutex);
 516         wil6210_disconnect(wil, evt->bssid, reason_code, true);
 517         mutex_unlock(&wil->mutex);
 518 }
 519
 520 /*
 521  * Firmware reports EAPOL frame using WME event.
 522  * Reconstruct Ethernet frame and deliver it via normal Rx
 523  */
 524 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
 525                              void *d, int len)
 526 {
 527         struct net_device *ndev = wil_to_ndev(wil);
 528         struct wmi_eapol_rx_event *evt = d;
 529         u16 eapol_len = le16_to_cpu(evt->eapol_len);
 530         int sz = eapol_len + ETH_HLEN;
 531         struct sk_buff *skb;
 532         struct ethhdr *eth;
 533         int cid;
 534         struct wil_net_stats *stats = NULL;
 535
 536         wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
 537                     evt->src_mac);
 538
 539         cid = wil_find_cid(wil, evt->src_mac);
 540         if (cid >= 0)
 541                 stats = &wil->sta[cid].stats;
 542
 543         if (eapol_len > 196) { /* TODO: revisit size limit */
 544                 wil_err(wil, "EAPOL too large\n");
 545                 return;
 546         }
 547
 548         skb = alloc_skb(sz, GFP_KERNEL);
 549         if (!skb) {
 550                 wil_err(wil, "Failed to allocate skb\n");
 551                 return;
 552         }
 553
 554         eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
 555         ether_addr_copy(eth->h_dest, ndev->dev_addr);
 556         ether_addr_copy(eth->h_source, evt->src_mac);
 557         eth->h_proto = cpu_to_be16(ETH_P_PAE);
 558         memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
 559         skb->protocol = eth_type_trans(skb, ndev);
 560         if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
 561                 ndev->stats.rx_packets++;
 562                 ndev->stats.rx_bytes += sz;
 563                 if (stats) {
 564                         stats->rx_packets++;
 565                         stats->rx_bytes += sz;
 566                 }
 567         } else {
 568                 ndev->stats.rx_dropped++;
 569                 if (stats)
 570                         stats->rx_dropped++;
 571         }
 572 }
 573
 574 static void wmi_evt_vring_en(struct wil6210_priv *wil, int id, void *d, int len)
 575 {
 576         struct wmi_vring_en_event *evt = d;
 577         u8 vri = evt->vring_index;
 578
 579         wil_dbg_wmi(wil, "Enable vring %d\n", vri);
 580
 581         if (vri >= ARRAY_SIZE(wil->vring_tx)) {
 582                 wil_err(wil, "Enable for invalid vring %d\n", vri);
 583                 return;
 584         }
 585         wil->vring_tx_data[vri].dot1x_open = true;
 586         if (vri == wil->bcast_vring) /* no BA for bcast */
 587                 return;
 588         if (agg_wsize >= 0)
 589                 wil_addba_tx_request(wil, vri, agg_wsize);
 590 }
 591
 592 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 593                               int len)
 594 {
 595         struct wmi_vring_ba_status_event *evt = d;
 596         struct vring_tx_data *txdata;
 597
 598         wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d AMSDU%s\n",
 599                     evt->ringid,
 600                     evt->status == WMI_BA_AGREED ? "OK" : "N/A",
 601                     evt->agg_wsize, __le16_to_cpu(evt->ba_timeout),
 602                     evt->amsdu ? "+" : "-");
 603
 604         if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
 605                 wil_err(wil, "invalid ring id %d\n", evt->ringid);
 606                 return;
 607         }
 608
 609         if (evt->status != WMI_BA_AGREED) {
 610                 evt->ba_timeout = 0;
 611                 evt->agg_wsize = 0;
 612                 evt->amsdu = 0;
 613         }
 614
 615         txdata = &wil->vring_tx_data[evt->ringid];
 616
 617         txdata->agg_timeout = le16_to_cpu(evt->ba_timeout);
 618         txdata->agg_wsize = evt->agg_wsize;
 619         txdata->agg_amsdu = evt->amsdu;
 620         txdata->addba_in_progress = false;
 621 }
 622
 623 static void wmi_evt_addba_rx_req(struct wil6210_priv *wil, int id, void *d,
 624                                  int len)
 625 {
 626         struct wmi_rcp_addba_req_event *evt = d;
 627
 628         wil_addba_rx_request(wil, evt->cidxtid, evt->dialog_token,
 629                              evt->ba_param_set, evt->ba_timeout,
 630                              evt->ba_seq_ctrl);
 631 }
 632
 633 static void wmi_evt_delba(struct wil6210_priv *wil, int id, void *d, int len)
 634 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
 635 {
 636         struct wmi_delba_event *evt = d;
 637         u8 cid, tid;
 638         u16 reason = __le16_to_cpu(evt->reason);
 639         struct wil_sta_info *sta;
 640         struct wil_tid_ampdu_rx *r;
 641
 642         might_sleep();
 643         parse_cidxtid(evt->cidxtid, &cid, &tid);
 644         wil_dbg_wmi(wil, "DELBA CID %d TID %d from %s reason %d\n",
 645                     cid, tid,
 646                     evt->from_initiator ? "originator" : "recipient",
 647                     reason);
 648         if (!evt->from_initiator) {
 649                 int i;
 650                 /* find Tx vring it belongs to */
 651                 for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) {
 652                         if ((wil->vring2cid_tid[i][0] == cid) &&
 653                             (wil->vring2cid_tid[i][1] == tid)) {
 654                                 struct vring_tx_data *txdata =
 655                                         &wil->vring_tx_data[i];
 656
 657                                 wil_dbg_wmi(wil, "DELBA Tx vring %d\n", i);
 658                                 txdata->agg_timeout = 0;
 659                                 txdata->agg_wsize = 0;
 660                                 txdata->addba_in_progress = false;
 661
 662                                 break; /* max. 1 matching ring */
 663                         }
 664                 }
 665                 if (i >= ARRAY_SIZE(wil->vring2cid_tid))
 666                         wil_err(wil, "DELBA: unable to find Tx vring\n");
 667                 return;
 668         }
 669
 670         sta = &wil->sta[cid];
 671
 672         spin_lock_bh(&sta->tid_rx_lock);
 673
 674         r = sta->tid_rx[tid];
 675         sta->tid_rx[tid] = NULL;
 676         wil_tid_ampdu_rx_free(wil, r);
 677
 678         spin_unlock_bh(&sta->tid_rx_lock);
 679 }
 680
 681 /**
 682  * Some events are ignored for purpose; and need not be interpreted as
 683  * "unhandled events"
 684  */
 685 static void wmi_evt_ignore(struct wil6210_priv *wil, int id, void *d, int len)
 686 {
 687         wil_dbg_wmi(wil, "Ignore event 0x%04x len %d\n", id, len);
 688 }
 689
 690 static const struct {
 691         int eventid;
 692         void (*handler)(struct wil6210_priv *wil, int eventid,
 693                         void *data, int data_len);
 694 } wmi_evt_handlers[] = {
 695         {WMI_READY_EVENTID,             wmi_evt_ready},
 696         {WMI_FW_READY_EVENTID,                  wmi_evt_ignore},
 697         {WMI_RX_MGMT_PACKET_EVENTID,    wmi_evt_rx_mgmt},
 698         {WMI_TX_MGMT_PACKET_EVENTID,            wmi_evt_tx_mgmt},
 699         {WMI_SCAN_COMPLETE_EVENTID,     wmi_evt_scan_complete},
 700         {WMI_CONNECT_EVENTID,           wmi_evt_connect},
 701         {WMI_DISCONNECT_EVENTID,        wmi_evt_disconnect},
 702         {WMI_EAPOL_RX_EVENTID,          wmi_evt_eapol_rx},
 703         {WMI_BA_STATUS_EVENTID,         wmi_evt_ba_status},
 704         {WMI_RCP_ADDBA_REQ_EVENTID,     wmi_evt_addba_rx_req},
 705         {WMI_DELBA_EVENTID,             wmi_evt_delba},
 706         {WMI_VRING_EN_EVENTID,          wmi_evt_vring_en},
 707         {WMI_DATA_PORT_OPEN_EVENTID,            wmi_evt_ignore},
 708 };
 709
 710 /*
 711  * Run in IRQ context
 712  * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
 713  * that will be eventually handled by the @wmi_event_worker in the thread
 714  * context of thread "wil6210_wmi"
 715  */
 716 void wmi_recv_cmd(struct wil6210_priv *wil)
 717 {
 718         struct wil6210_mbox_ring_desc d_tail;
 719         struct wil6210_mbox_hdr hdr;
 720         struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
 721         struct pending_wmi_event *evt;
 722         u8 *cmd;
 723         void __iomem *src;
 724         ulong flags;
 725         unsigned n;
 726
 727         if (!test_bit(wil_status_mbox_ready, wil->status)) {
 728                 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 729                 return;
 730         }
 731
 732         for (n = 0;; n++) {
 733                 u16 len;
 734                 bool q;
 735
 736                 r->head = wil_r(wil, RGF_MBOX +
 737                                 offsetof(struct wil6210_mbox_ctl, rx.head));
 738                 if (r->tail == r->head)
 739                         break;
 740
 741                 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
 742                             r->head, r->tail);
 743                 /* read cmd descriptor from tail */
 744                 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
 745                                      sizeof(struct wil6210_mbox_ring_desc));
 746                 if (d_tail.sync == 0) {
 747                         wil_err(wil, "Mbox evt not owned by FW?\n");
 748                         break;
 749                 }
 750
 751                 /* read cmd header from descriptor */
 752                 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
 753                         wil_err(wil, "Mbox evt at 0x%08x?\n",
 754                                 le32_to_cpu(d_tail.addr));
 755                         break;
 756                 }
 757                 len = le16_to_cpu(hdr.len);
 758                 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
 759                             le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
 760                             hdr.flags);
 761
 762                 /* read cmd buffer from descriptor */
 763                 src = wmi_buffer(wil, d_tail.addr) +
 764                       sizeof(struct wil6210_mbox_hdr);
 765                 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
 766                                              event.wmi) + len, 4),
 767                               GFP_KERNEL);
 768                 if (!evt)
 769                         break;
 770
 771                 evt->event.hdr = hdr;
 772                 cmd = (void *)&evt->event.wmi;
 773                 wil_memcpy_fromio_32(cmd, src, len);
 774                 /* mark entry as empty */
 775                 wil_w(wil, r->tail +
 776                       offsetof(struct wil6210_mbox_ring_desc, sync), 0);
 777                 /* indicate */
 778                 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
 779                     (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
 780                         struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi;
 781                         u16 id = le16_to_cpu(wmi->id);
 782                         u32 tstamp = le32_to_cpu(wmi->timestamp);
 783
 784                         wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 785                                     id, wmi->mid, tstamp);
 786                         trace_wil6210_wmi_event(wmi, &wmi[1],
 787                                                 len - sizeof(*wmi));
 788                 }
 789                 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
 790                                  &evt->event.hdr, sizeof(hdr) + len, true);
 791
 792                 /* advance tail */
 793                 r->tail = r->base + ((r->tail - r->base +
 794                           sizeof(struct wil6210_mbox_ring_desc)) % r->size);
 795                 wil_w(wil, RGF_MBOX +
 796                       offsetof(struct wil6210_mbox_ctl, rx.tail), r->tail);
 797
 798                 /* add to the pending list */
 799                 spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 800                 list_add_tail(&evt->list, &wil->pending_wmi_ev);
 801                 spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 802                 q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
 803                 wil_dbg_wmi(wil, "queue_work -> %d\n", q);
 804         }
 805         /* normally, 1 event per IRQ should be processed */
 806         wil_dbg_wmi(wil, "%s -> %d events queued\n", __func__, n);
 807 }
 808
 809 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 810              u16 reply_id, void *reply, u8 reply_size, int to_msec)
 811 {
 812         int rc;
 813         unsigned long remain;
 814
 815         mutex_lock(&wil->wmi_mutex);
 816
 817         rc = __wmi_send(wil, cmdid, buf, len);
 818         if (rc)
 819                 goto out;
 820
 821         wil->reply_id = reply_id;
 822         wil->reply_buf = reply;
 823         wil->reply_size = reply_size;
 824         remain = wait_for_completion_timeout(&wil->wmi_call,
 825                                              msecs_to_jiffies(to_msec));
 826         if (0 == remain) {
 827                 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 828                         cmdid, reply_id, to_msec);
 829                 rc = -ETIME;
 830         } else {
 831                 wil_dbg_wmi(wil,
 832                             "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
 833                             cmdid, reply_id,
 834                             to_msec - jiffies_to_msecs(remain));
 835         }
 836         wil->reply_id = 0;
 837         wil->reply_buf = NULL;
 838         wil->reply_size = 0;
 839  out:
 840         mutex_unlock(&wil->wmi_mutex);
 841
 842         return rc;
 843 }
 844
 845 int wmi_echo(struct wil6210_priv *wil)
 846 {
 847         struct wmi_echo_cmd cmd = {
 848                 .value = cpu_to_le32(0x12345678),
 849         };
 850
 851         return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
 852                         WMI_ECHO_RSP_EVENTID, NULL, 0, 50);
 853 }
 854
 855 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
 856 {
 857         struct wmi_set_mac_address_cmd cmd;
 858
 859         ether_addr_copy(cmd.mac, addr);
 860
 861         wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
 862
 863         return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
 864 }
 865
 866 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype,
 867                   u8 chan, u8 hidden_ssid)
 868 {
 869         int rc;
 870
 871         struct wmi_pcp_start_cmd cmd = {
 872                 .bcon_interval = cpu_to_le16(bi),
 873                 .network_type = wmi_nettype,
 874                 .disable_sec_offload = 1,
 875                 .channel = chan - 1,
 876                 .pcp_max_assoc_sta = max_assoc_sta,
 877                 .hidden_ssid = hidden_ssid,
 878         };
 879         struct {
 880                 struct wil6210_mbox_hdr_wmi wmi;
 881                 struct wmi_pcp_started_event evt;
 882         } __packed reply;
 883
 884         if (!wil->privacy)
 885                 cmd.disable_sec = 1;
 886
 887         if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
 888             (cmd.pcp_max_assoc_sta <= 0)) {
 889                 wil_info(wil,
 890                          "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
 891                          max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
 892                 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
 893         }
 894
 895         /*
 896          * Processing time may be huge, in case of secure AP it takes about
 897          * 3500ms for FW to start AP
 898          */
 899         rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
 900                       WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
 901         if (rc)
 902                 return rc;
 903
 904         if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
 905                 rc = -EINVAL;
 906
 907         return rc;
 908 }
 909
 910 int wmi_pcp_stop(struct wil6210_priv *wil)
 911 {
 912         return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
 913                         WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
 914 }
 915
 916 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
 917 {
 918         struct wmi_set_ssid_cmd cmd = {
 919                 .ssid_len = cpu_to_le32(ssid_len),
 920         };
 921
 922         if (ssid_len > sizeof(cmd.ssid))
 923                 return -EINVAL;
 924
 925         memcpy(cmd.ssid, ssid, ssid_len);
 926
 927         return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
 928 }
 929
 930 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
 931 {
 932         int rc;
 933         struct {
 934                 struct wil6210_mbox_hdr_wmi wmi;
 935                 struct wmi_set_ssid_cmd cmd;
 936         } __packed reply;
 937         int len; /* reply.cmd.ssid_len in CPU order */
 938
 939         rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
 940                       &reply, sizeof(reply), 20);
 941         if (rc)
 942                 return rc;
 943
 944         len = le32_to_cpu(reply.cmd.ssid_len);
 945         if (len > sizeof(reply.cmd.ssid))
 946                 return -EINVAL;
 947
 948         *ssid_len = len;
 949         memcpy(ssid, reply.cmd.ssid, len);
 950
 951         return 0;
 952 }
 953
 954 int wmi_set_channel(struct wil6210_priv *wil, int channel)
 955 {
 956         struct wmi_set_pcp_channel_cmd cmd = {
 957                 .channel = channel - 1,
 958         };
 959
 960         return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
 961 }
 962
 963 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
 964 {
 965         int rc;
 966         struct {
 967                 struct wil6210_mbox_hdr_wmi wmi;
 968                 struct wmi_set_pcp_channel_cmd cmd;
 969         } __packed reply;
 970
 971         rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
 972                       WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
 973         if (rc)
 974                 return rc;
 975
 976         if (reply.cmd.channel > 3)
 977                 return -EINVAL;
 978
 979         *channel = reply.cmd.channel + 1;
 980
 981         return 0;
 982 }
 983
 984 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
 985 {
 986         struct wmi_p2p_cfg_cmd cmd = {
 987                 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
 988                 .channel = channel - 1,
 989         };
 990
 991         return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
 992 }
 993
 994 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
 995                        const void *mac_addr, int key_usage)
 996 {
 997         struct wmi_delete_cipher_key_cmd cmd = {
 998                 .key_index = key_index,
 999         };
1000
1001         if (mac_addr)
1002                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1003
1004         return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1005 }
1006
1007 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
1008                        const void *mac_addr, int key_len, const void *key,
1009                        int key_usage)
1010 {
1011         struct wmi_add_cipher_key_cmd cmd = {
1012                 .key_index = key_index,
1013                 .key_usage = key_usage,
1014                 .key_len = key_len,
1015         };
1016
1017         if (!key || (key_len > sizeof(cmd.key)))
1018                 return -EINVAL;
1019
1020         memcpy(cmd.key, key, key_len);
1021         if (mac_addr)
1022                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1023
1024         return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1025 }
1026
1027 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
1028 {
1029         static const char *const names[] = {
1030                 [WMI_FRAME_BEACON]      = "BEACON",
1031                 [WMI_FRAME_PROBE_REQ]   = "PROBE_REQ",
1032                 [WMI_FRAME_PROBE_RESP]  = "WMI_FRAME_PROBE_RESP",
1033                 [WMI_FRAME_ASSOC_REQ]   = "WMI_FRAME_ASSOC_REQ",
1034                 [WMI_FRAME_ASSOC_RESP]  = "WMI_FRAME_ASSOC_RESP",
1035         };
1036         int rc;
1037         u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
1038         struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
1039
1040         if (!cmd) {
1041                 rc = -ENOMEM;
1042                 goto out;
1043         }
1044         if (!ie)
1045                 ie_len = 0;
1046
1047         cmd->mgmt_frm_type = type;
1048         /* BUG: FW API define ieLen as u8. Will fix FW */
1049         cmd->ie_len = cpu_to_le16(ie_len);
1050         memcpy(cmd->ie_info, ie, ie_len);
1051         rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
1052         kfree(cmd);
1053 out:
1054         if (rc) {
1055                 const char *name = type < ARRAY_SIZE(names) ?
1056                                    names[type] : "??";
1057                 wil_err(wil, "set_ie(%d %s) failed : %d\n", type, name, rc);
1058         }
1059
1060         return rc;
1061 }
1062
1063 /**
1064  * wmi_rxon - turn radio on/off
1065  * @on:         turn on if true, off otherwise
1066  *
1067  * Only switch radio. Channel should be set separately.
1068  * No timeout for rxon - radio turned on forever unless some other call
1069  * turns it off
1070  */
1071 int wmi_rxon(struct wil6210_priv *wil, bool on)
1072 {
1073         int rc;
1074         struct {
1075                 struct wil6210_mbox_hdr_wmi wmi;
1076                 struct wmi_listen_started_event evt;
1077         } __packed reply;
1078
1079         wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1080
1081         if (on) {
1082                 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1083                               WMI_LISTEN_STARTED_EVENTID,
1084                               &reply, sizeof(reply), 100);
1085                 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1086                         rc = -EINVAL;
1087         } else {
1088                 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1089                               WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1090         }
1091
1092         return rc;
1093 }
1094
1095 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1096 {
1097         struct wireless_dev *wdev = wil->wdev;
1098         struct net_device *ndev = wil_to_ndev(wil);
1099         struct wmi_cfg_rx_chain_cmd cmd = {
1100                 .action = WMI_RX_CHAIN_ADD,
1101                 .rx_sw_ring = {
1102                         .max_mpdu_size = cpu_to_le16(wil_mtu2macbuf(mtu_max)),
1103                         .ring_mem_base = cpu_to_le64(vring->pa),
1104                         .ring_size = cpu_to_le16(vring->size),
1105                 },
1106                 .mid = 0, /* TODO - what is it? */
1107                 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1108                 .reorder_type = WMI_RX_SW_REORDER,
1109                 .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh),
1110         };
1111         struct {
1112                 struct wil6210_mbox_hdr_wmi wmi;
1113                 struct wmi_cfg_rx_chain_done_event evt;
1114         } __packed evt;
1115         int rc;
1116
1117         if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1118                 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1119
1120                 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1121                 if (ch)
1122                         cmd.sniffer_cfg.channel = ch->hw_value - 1;
1123                 cmd.sniffer_cfg.phy_info_mode =
1124                         cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1125                 cmd.sniffer_cfg.phy_support =
1126                         cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1127                                     ? WMI_SNIFFER_CP : WMI_SNIFFER_BOTH_PHYS);
1128         } else {
1129                 /* Initialize offload (in non-sniffer mode).
1130                  * Linux IP stack always calculates IP checksum
1131                  * HW always calculate TCP/UDP checksum
1132                  */
1133                 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1134         }
1135
1136         if (rx_align_2)
1137                 cmd.l2_802_3_offload_ctrl |=
1138                                 L2_802_3_OFFLOAD_CTRL_SNAP_KEEP_MSK;
1139
1140         /* typical time for secure PCP is 840ms */
1141         rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1142                       WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1143         if (rc)
1144                 return rc;
1145
1146         vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1147
1148         wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1149                      le32_to_cpu(evt.evt.status), vring->hwtail);
1150
1151         if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1152                 rc = -EINVAL;
1153
1154         return rc;
1155 }
1156
1157 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf)
1158 {
1159         int rc;
1160         struct wmi_temp_sense_cmd cmd = {
1161                 .measure_baseband_en = cpu_to_le32(!!t_bb),
1162                 .measure_rf_en = cpu_to_le32(!!t_rf),
1163                 .measure_mode = cpu_to_le32(TEMPERATURE_MEASURE_NOW),
1164         };
1165         struct {
1166                 struct wil6210_mbox_hdr_wmi wmi;
1167                 struct wmi_temp_sense_done_event evt;
1168         } __packed reply;
1169
1170         rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1171                       WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1172         if (rc)
1173                 return rc;
1174
1175         if (t_bb)
1176                 *t_bb = le32_to_cpu(reply.evt.baseband_t1000);
1177         if (t_rf)
1178                 *t_rf = le32_to_cpu(reply.evt.rf_t1000);
1179
1180         return 0;
1181 }
1182
1183 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason)
1184 {
1185         int rc;
1186         u16 reason_code;
1187         struct wmi_disconnect_sta_cmd cmd = {
1188                 .disconnect_reason = cpu_to_le16(reason),
1189         };
1190         struct {
1191                 struct wil6210_mbox_hdr_wmi wmi;
1192                 struct wmi_disconnect_event evt;
1193         } __packed reply;
1194
1195         ether_addr_copy(cmd.dst_mac, mac);
1196
1197         wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1198
1199         rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd),
1200                       WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 1000);
1201         /* failure to disconnect in reasonable time treated as FW error */
1202         if (rc) {
1203                 wil_fw_error_recovery(wil);
1204                 return rc;
1205         }
1206
1207         /* call event handler manually after processing wmi_call,
1208          * to avoid deadlock - disconnect event handler acquires wil->mutex
1209          * while it is already held here
1210          */
1211         reason_code = le16_to_cpu(reply.evt.protocol_reason_status);
1212
1213         wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
1214                     reply.evt.bssid, reason_code,
1215                     reply.evt.disconnect_reason);
1216
1217         wil->sinfo_gen++;
1218         wil6210_disconnect(wil, reply.evt.bssid, reason_code, true);
1219
1220         return 0;
1221 }
1222
1223 int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout)
1224 {
1225         struct wmi_vring_ba_en_cmd cmd = {
1226                 .ringid = ringid,
1227                 .agg_max_wsize = size,
1228                 .ba_timeout = cpu_to_le16(timeout),
1229                 .amsdu = 0,
1230         };
1231
1232         wil_dbg_wmi(wil, "%s(ring %d size %d timeout %d)\n", __func__,
1233                     ringid, size, timeout);
1234
1235         return wmi_send(wil, WMI_VRING_BA_EN_CMDID, &cmd, sizeof(cmd));
1236 }
1237
1238 int wmi_delba_tx(struct wil6210_priv *wil, u8 ringid, u16 reason)
1239 {
1240         struct wmi_vring_ba_dis_cmd cmd = {
1241                 .ringid = ringid,
1242                 .reason = cpu_to_le16(reason),
1243         };
1244
1245         wil_dbg_wmi(wil, "%s(ring %d reason %d)\n", __func__,
1246                     ringid, reason);
1247
1248         return wmi_send(wil, WMI_VRING_BA_DIS_CMDID, &cmd, sizeof(cmd));
1249 }
1250
1251 int wmi_delba_rx(struct wil6210_priv *wil, u8 cidxtid, u16 reason)
1252 {
1253         struct wmi_rcp_delba_cmd cmd = {
1254                 .cidxtid = cidxtid,
1255                 .reason = cpu_to_le16(reason),
1256         };
1257
1258         wil_dbg_wmi(wil, "%s(CID %d TID %d reason %d)\n", __func__,
1259                     cidxtid & 0xf, (cidxtid >> 4) & 0xf, reason);
1260
1261         return wmi_send(wil, WMI_RCP_DELBA_CMDID, &cmd, sizeof(cmd));
1262 }
1263
1264 int wmi_addba_rx_resp(struct wil6210_priv *wil, u8 cid, u8 tid, u8 token,
1265                       u16 status, bool amsdu, u16 agg_wsize, u16 timeout)
1266 {
1267         int rc;
1268         struct wmi_rcp_addba_resp_cmd cmd = {
1269                 .cidxtid = mk_cidxtid(cid, tid),
1270                 .dialog_token = token,
1271                 .status_code = cpu_to_le16(status),
1272                 /* bit 0: A-MSDU supported
1273                  * bit 1: policy (should be 0 for us)
1274                  * bits 2..5: TID
1275                  * bits 6..15: buffer size
1276                  */
1277                 .ba_param_set = cpu_to_le16((amsdu ? 1 : 0) | (tid << 2) |
1278                                             (agg_wsize << 6)),
1279                 .ba_timeout = cpu_to_le16(timeout),
1280         };
1281         struct {
1282                 struct wil6210_mbox_hdr_wmi wmi;
1283                 struct wmi_rcp_addba_resp_sent_event evt;
1284         } __packed reply;
1285
1286         wil_dbg_wmi(wil,
1287                     "ADDBA response for CID %d TID %d size %d timeout %d status %d AMSDU%s\n",
1288                     cid, tid, agg_wsize, timeout, status, amsdu ? "+" : "-");
1289
1290         rc = wmi_call(wil, WMI_RCP_ADDBA_RESP_CMDID, &cmd, sizeof(cmd),
1291                       WMI_RCP_ADDBA_RESP_SENT_EVENTID, &reply, sizeof(reply),
1292                       100);
1293         if (rc)
1294                 return rc;
1295
1296         if (reply.evt.status) {
1297                 wil_err(wil, "ADDBA response failed with status %d\n",
1298                         le16_to_cpu(reply.evt.status));
1299                 rc = -EINVAL;
1300         }
1301
1302         return rc;
1303 }
1304
1305 void wmi_event_flush(struct wil6210_priv *wil)
1306 {
1307         struct pending_wmi_event *evt, *t;
1308
1309         wil_dbg_wmi(wil, "%s()\n", __func__);
1310
1311         list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1312                 list_del(&evt->list);
1313                 kfree(evt);
1314         }
1315 }
1316
1317 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1318                                  void *d, int len)
1319 {
1320         uint i;
1321
1322         for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1323                 if (wmi_evt_handlers[i].eventid == id) {
1324                         wmi_evt_handlers[i].handler(wil, id, d, len);
1325                         return true;
1326                 }
1327         }
1328
1329         return false;
1330 }
1331
1332 static void wmi_event_handle(struct wil6210_priv *wil,
1333                              struct wil6210_mbox_hdr *hdr)
1334 {
1335         u16 len = le16_to_cpu(hdr->len);
1336
1337         if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1338             (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1339                 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1340                 void *evt_data = (void *)(&wmi[1]);
1341                 u16 id = le16_to_cpu(wmi->id);
1342
1343                 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1344                             id, wil->reply_id);
1345                 /* check if someone waits for this event */
1346                 if (wil->reply_id && wil->reply_id == id) {
1347                         if (wil->reply_buf) {
1348                                 memcpy(wil->reply_buf, wmi,
1349                                        min(len, wil->reply_size));
1350                         } else {
1351                                 wmi_evt_call_handler(wil, id, evt_data,
1352                                                      len - sizeof(*wmi));
1353                         }
1354                         wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id);
1355                         complete(&wil->wmi_call);
1356                         return;
1357                 }
1358                 /* unsolicited event */
1359                 /* search for handler */
1360                 if (!wmi_evt_call_handler(wil, id, evt_data,
1361                                           len - sizeof(*wmi))) {
1362                         wil_info(wil, "Unhandled event 0x%04x\n", id);
1363                 }
1364         } else {
1365                 wil_err(wil, "Unknown event type\n");
1366                 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1367                                hdr, sizeof(*hdr) + len, true);
1368         }
1369 }
1370
1371 /*
1372  * Retrieve next WMI event from the pending list
1373  */
1374 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1375 {
1376         ulong flags;
1377         struct list_head *ret = NULL;
1378
1379         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1380
1381         if (!list_empty(&wil->pending_wmi_ev)) {
1382                 ret = wil->pending_wmi_ev.next;
1383                 list_del(ret);
1384         }
1385
1386         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1387
1388         return ret;
1389 }
1390
1391 /*
1392  * Handler for the WMI events
1393  */
1394 void wmi_event_worker(struct work_struct *work)
1395 {
1396         struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1397                                                  wmi_event_worker);
1398         struct pending_wmi_event *evt;
1399         struct list_head *lh;
1400
1401         wil_dbg_wmi(wil, "Start %s\n", __func__);
1402         while ((lh = next_wmi_ev(wil)) != NULL) {
1403                 evt = list_entry(lh, struct pending_wmi_event, list);
1404                 wmi_event_handle(wil, &evt->event.hdr);
1405                 kfree(evt);
1406         }
1407         wil_dbg_wmi(wil, "Finished %s\n", __func__);
1408 }