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

   1 /*
   2  * Copyright (c) 2012-2016 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 wmi_cmd_hdr 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                         .command_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                 if (!test_bit(wil_status_fwready, wil->status)) {
 232                         wil_err(wil, "WMI: cannot send command while FW not ready\n");
 233                         return -EAGAIN;
 234                 }
 235                 r->tail = wil_r(wil, RGF_MBOX +
 236                                 offsetof(struct wil6210_mbox_ctl, tx.tail));
 237                 if (next_head != r->tail)
 238                         break;
 239                 msleep(20);
 240         }
 241         if (next_head == r->tail) {
 242                 wil_err(wil, "WMI ring full\n");
 243                 return -EBUSY;
 244         }
 245         dst = wmi_buffer(wil, d_head.addr);
 246         if (!dst) {
 247                 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
 248                         le32_to_cpu(d_head.addr));
 249                 return -EINVAL;
 250         }
 251         cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
 252         /* set command */
 253         wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
 254         wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
 255                          sizeof(cmd), true);
 256         wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
 257                          len, true);
 258         wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
 259         wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
 260         /* mark entry as full */
 261         wil_w(wil, r->head + offsetof(struct wil6210_mbox_ring_desc, sync), 1);
 262         /* advance next ptr */
 263         wil_w(wil, RGF_MBOX + offsetof(struct wil6210_mbox_ctl, tx.head),
 264               r->head = next_head);
 265
 266         trace_wil6210_wmi_cmd(&cmd.wmi, buf, len);
 267
 268         /* interrupt to FW */
 269         wil_w(wil, RGF_USER_USER_ICR + offsetof(struct RGF_ICR, ICS),
 270               SW_INT_MBOX);
 271
 272         return 0;
 273 }
 274
 275 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
 276 {
 277         int rc;
 278
 279         mutex_lock(&wil->wmi_mutex);
 280         rc = __wmi_send(wil, cmdid, buf, len);
 281         mutex_unlock(&wil->wmi_mutex);
 282
 283         return rc;
 284 }
 285
 286 /*=== Event handlers ===*/
 287 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
 288 {
 289         struct wireless_dev *wdev = wil->wdev;
 290         struct wmi_ready_event *evt = d;
 291
 292         wil->fw_version = le32_to_cpu(evt->sw_version);
 293         wil->n_mids = evt->numof_additional_mids;
 294
 295         wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
 296                  evt->mac, wil->n_mids);
 297         /* ignore MAC address, we already have it from the boot loader */
 298         snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
 299                  "%d", wil->fw_version);
 300
 301         wil_set_recovery_state(wil, fw_recovery_idle);
 302         set_bit(wil_status_fwready, wil->status);
 303         /* let the reset sequence continue */
 304         complete(&wil->wmi_ready);
 305 }
 306
 307 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 308 {
 309         struct wmi_rx_mgmt_packet_event *data = d;
 310         struct wiphy *wiphy = wil_to_wiphy(wil);
 311         struct ieee80211_mgmt *rx_mgmt_frame =
 312                         (struct ieee80211_mgmt *)data->payload;
 313         int flen = len - offsetof(struct wmi_rx_mgmt_packet_event, payload);
 314         int ch_no;
 315         u32 freq;
 316         struct ieee80211_channel *channel;
 317         s32 signal;
 318         __le16 fc;
 319         u32 d_len;
 320         u16 d_status;
 321
 322         if (flen < 0) {
 323                 wil_err(wil, "MGMT Rx: short event, len %d\n", len);
 324                 return;
 325         }
 326
 327         d_len = le32_to_cpu(data->info.len);
 328         if (d_len != flen) {
 329                 wil_err(wil,
 330                         "MGMT Rx: length mismatch, d_len %d should be %d\n",
 331                         d_len, flen);
 332                 return;
 333         }
 334
 335         ch_no = data->info.channel + 1;
 336         freq = ieee80211_channel_to_frequency(ch_no, NL80211_BAND_60GHZ);
 337         channel = ieee80211_get_channel(wiphy, freq);
 338         signal = data->info.sqi;
 339         d_status = le16_to_cpu(data->info.status);
 340         fc = rx_mgmt_frame->frame_control;
 341
 342         wil_dbg_wmi(wil, "MGMT Rx: channel %d MCS %d SNR %d SQI %d%%\n",
 343                     data->info.channel, data->info.mcs, data->info.snr,
 344                     data->info.sqi);
 345         wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
 346                     le16_to_cpu(fc));
 347         wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
 348                     data->info.qid, data->info.mid, data->info.cid);
 349         wil_hex_dump_wmi("MGMT Rx ", DUMP_PREFIX_OFFSET, 16, 1, rx_mgmt_frame,
 350                          d_len, true);
 351
 352         if (!channel) {
 353                 wil_err(wil, "Frame on unsupported channel\n");
 354                 return;
 355         }
 356
 357         if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
 358                 struct cfg80211_bss *bss;
 359                 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
 360                 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
 361                 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
 362                 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
 363                 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
 364                                                  u.beacon.variable);
 365                 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
 366                 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
 367                 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
 368                 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
 369                                  ie_len, true);
 370
 371                 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
 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                 mutex_lock(&wil->p2p_wdev_mutex);
 384                 cfg80211_rx_mgmt(wil->radio_wdev, freq, signal,
 385                                  (void *)rx_mgmt_frame, d_len, 0);
 386                 mutex_unlock(&wil->p2p_wdev_mutex);
 387         }
 388 }
 389
 390 static void wmi_evt_tx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 391 {
 392         struct wmi_tx_mgmt_packet_event *data = d;
 393         struct ieee80211_mgmt *mgmt_frame =
 394                         (struct ieee80211_mgmt *)data->payload;
 395         int flen = len - offsetof(struct wmi_tx_mgmt_packet_event, payload);
 396
 397         wil_hex_dump_wmi("MGMT Tx ", DUMP_PREFIX_OFFSET, 16, 1, mgmt_frame,
 398                          flen, true);
 399 }
 400
 401 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
 402                                   void *d, int len)
 403 {
 404         if (wil->scan_request) {
 405                 struct wmi_scan_complete_event *data = d;
 406                 bool aborted = (data->status != WMI_SCAN_SUCCESS);
 407
 408                 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
 409                 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
 410                              wil->scan_request, aborted);
 411
 412                 del_timer_sync(&wil->scan_timer);
 413                 mutex_lock(&wil->p2p_wdev_mutex);
 414                 cfg80211_scan_done(wil->scan_request, aborted);
 415                 wil->radio_wdev = wil->wdev;
 416                 mutex_unlock(&wil->p2p_wdev_mutex);
 417                 wil->scan_request = NULL;
 418         } else {
 419                 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
 420         }
 421 }
 422
 423 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
 424 {
 425         struct net_device *ndev = wil_to_ndev(wil);
 426         struct wireless_dev *wdev = wil->wdev;
 427         struct wmi_connect_event *evt = d;
 428         int ch; /* channel number */
 429         struct station_info sinfo;
 430         u8 *assoc_req_ie, *assoc_resp_ie;
 431         size_t assoc_req_ielen, assoc_resp_ielen;
 432         /* capinfo(u16) + listen_interval(u16) + IEs */
 433         const size_t assoc_req_ie_offset = sizeof(u16) * 2;
 434         /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
 435         const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
 436         int rc;
 437
 438         if (len < sizeof(*evt)) {
 439                 wil_err(wil, "Connect event too short : %d bytes\n", len);
 440                 return;
 441         }
 442         if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
 443                    evt->assoc_resp_len) {
 444                 wil_err(wil,
 445                         "Connect event corrupted : %d != %d + %d + %d + %d\n",
 446                         len, (int)sizeof(*evt), evt->beacon_ie_len,
 447                         evt->assoc_req_len, evt->assoc_resp_len);
 448                 return;
 449         }
 450         if (evt->cid >= WIL6210_MAX_CID) {
 451                 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
 452                 return;
 453         }
 454
 455         ch = evt->channel + 1;
 456         wil_info(wil, "Connect %pM channel [%d] cid %d\n",
 457                  evt->bssid, ch, evt->cid);
 458         wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
 459                          evt->assoc_info, len - sizeof(*evt), true);
 460
 461         /* figure out IE's */
 462         assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
 463                                         assoc_req_ie_offset];
 464         assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
 465         if (evt->assoc_req_len <= assoc_req_ie_offset) {
 466                 assoc_req_ie = NULL;
 467                 assoc_req_ielen = 0;
 468         }
 469
 470         assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
 471                                          evt->assoc_req_len +
 472                                          assoc_resp_ie_offset];
 473         assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
 474         if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
 475                 assoc_resp_ie = NULL;
 476                 assoc_resp_ielen = 0;
 477         }
 478
 479         mutex_lock(&wil->mutex);
 480         if (test_bit(wil_status_resetting, wil->status) ||
 481             !test_bit(wil_status_fwready, wil->status)) {
 482                 wil_err(wil, "status_resetting, cancel connect event, CID %d\n",
 483                         evt->cid);
 484                 mutex_unlock(&wil->mutex);
 485                 /* no need for cleanup, wil_reset will do that */
 486                 return;
 487         }
 488
 489         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 490             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 491                 if (!test_bit(wil_status_fwconnecting, wil->status)) {
 492                         wil_err(wil, "Not in connecting state\n");
 493                         mutex_unlock(&wil->mutex);
 494                         return;
 495                 }
 496                 del_timer_sync(&wil->connect_timer);
 497         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 498                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 499                 if (wil->sta[evt->cid].status != wil_sta_unused) {
 500                         wil_err(wil, "%s: AP: Invalid status %d for CID %d\n",
 501                                 __func__, wil->sta[evt->cid].status, evt->cid);
 502                         mutex_unlock(&wil->mutex);
 503                         return;
 504                 }
 505         }
 506
 507         /* FIXME FW can transmit only ucast frames to peer */
 508         /* FIXME real ring_id instead of hard coded 0 */
 509         ether_addr_copy(wil->sta[evt->cid].addr, evt->bssid);
 510         wil->sta[evt->cid].status = wil_sta_conn_pending;
 511
 512         rc = wil_tx_init(wil, evt->cid);
 513         if (rc) {
 514                 wil_err(wil, "%s: config tx vring failed for CID %d, rc (%d)\n",
 515                         __func__, evt->cid, rc);
 516                 wmi_disconnect_sta(wil, wil->sta[evt->cid].addr,
 517                                    WLAN_REASON_UNSPECIFIED, false);
 518         } else {
 519                 wil_info(wil, "%s: successful connection to CID %d\n",
 520                          __func__, evt->cid);
 521         }
 522
 523         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 524             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 525                 if (rc) {
 526                         netif_tx_stop_all_queues(ndev);
 527                         netif_carrier_off(ndev);
 528                         wil_err(wil,
 529                                 "%s: cfg80211_connect_result with failure\n",
 530                                 __func__);
 531                         cfg80211_connect_result(ndev, evt->bssid, NULL, 0,
 532                                                 NULL, 0,
 533                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
 534                                                 GFP_KERNEL);
 535                         goto out;
 536                 } else {
 537                         cfg80211_connect_result(ndev, evt->bssid,
 538                                                 assoc_req_ie, assoc_req_ielen,
 539                                                 assoc_resp_ie, assoc_resp_ielen,
 540                                                 WLAN_STATUS_SUCCESS,
 541                                                 GFP_KERNEL);
 542                 }
 543         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 544                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 545                 if (rc)
 546                         goto out;
 547
 548                 memset(&sinfo, 0, sizeof(sinfo));
 549
 550                 sinfo.generation = wil->sinfo_gen++;
 551
 552                 if (assoc_req_ie) {
 553                         sinfo.assoc_req_ies = assoc_req_ie;
 554                         sinfo.assoc_req_ies_len = assoc_req_ielen;
 555                 }
 556
 557                 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
 558         } else {
 559                 wil_err(wil, "%s: unhandled iftype %d for CID %d\n",
 560                         __func__, wdev->iftype, evt->cid);
 561                 goto out;
 562         }
 563
 564         wil->sta[evt->cid].status = wil_sta_connected;
 565         set_bit(wil_status_fwconnected, wil->status);
 566         netif_tx_wake_all_queues(ndev);
 567
 568 out:
 569         if (rc)
 570                 wil->sta[evt->cid].status = wil_sta_unused;
 571         clear_bit(wil_status_fwconnecting, wil->status);
 572         mutex_unlock(&wil->mutex);
 573 }
 574
 575 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 576                                void *d, int len)
 577 {
 578         struct wmi_disconnect_event *evt = d;
 579         u16 reason_code = le16_to_cpu(evt->protocol_reason_status);
 580
 581         wil_info(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
 582                  evt->bssid, reason_code, evt->disconnect_reason);
 583
 584         wil->sinfo_gen++;
 585
 586         mutex_lock(&wil->mutex);
 587         wil6210_disconnect(wil, evt->bssid, reason_code, true);
 588         mutex_unlock(&wil->mutex);
 589 }
 590
 591 /*
 592  * Firmware reports EAPOL frame using WME event.
 593  * Reconstruct Ethernet frame and deliver it via normal Rx
 594  */
 595 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
 596                              void *d, int len)
 597 {
 598         struct net_device *ndev = wil_to_ndev(wil);
 599         struct wmi_eapol_rx_event *evt = d;
 600         u16 eapol_len = le16_to_cpu(evt->eapol_len);
 601         int sz = eapol_len + ETH_HLEN;
 602         struct sk_buff *skb;
 603         struct ethhdr *eth;
 604         int cid;
 605         struct wil_net_stats *stats = NULL;
 606
 607         wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
 608                     evt->src_mac);
 609
 610         cid = wil_find_cid(wil, evt->src_mac);
 611         if (cid >= 0)
 612                 stats = &wil->sta[cid].stats;
 613
 614         if (eapol_len > 196) { /* TODO: revisit size limit */
 615                 wil_err(wil, "EAPOL too large\n");
 616                 return;
 617         }
 618
 619         skb = alloc_skb(sz, GFP_KERNEL);
 620         if (!skb) {
 621                 wil_err(wil, "Failed to allocate skb\n");
 622                 return;
 623         }
 624
 625         eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
 626         ether_addr_copy(eth->h_dest, ndev->dev_addr);
 627         ether_addr_copy(eth->h_source, evt->src_mac);
 628         eth->h_proto = cpu_to_be16(ETH_P_PAE);
 629         memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
 630         skb->protocol = eth_type_trans(skb, ndev);
 631         if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
 632                 ndev->stats.rx_packets++;
 633                 ndev->stats.rx_bytes += sz;
 634                 if (stats) {
 635                         stats->rx_packets++;
 636                         stats->rx_bytes += sz;
 637                 }
 638         } else {
 639                 ndev->stats.rx_dropped++;
 640                 if (stats)
 641                         stats->rx_dropped++;
 642         }
 643 }
 644
 645 static void wmi_evt_vring_en(struct wil6210_priv *wil, int id, void *d, int len)
 646 {
 647         struct wmi_vring_en_event *evt = d;
 648         u8 vri = evt->vring_index;
 649
 650         wil_dbg_wmi(wil, "Enable vring %d\n", vri);
 651
 652         if (vri >= ARRAY_SIZE(wil->vring_tx)) {
 653                 wil_err(wil, "Enable for invalid vring %d\n", vri);
 654                 return;
 655         }
 656         wil->vring_tx_data[vri].dot1x_open = true;
 657         if (vri == wil->bcast_vring) /* no BA for bcast */
 658                 return;
 659         if (agg_wsize >= 0)
 660                 wil_addba_tx_request(wil, vri, agg_wsize);
 661 }
 662
 663 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 664                               int len)
 665 {
 666         struct wmi_ba_status_event *evt = d;
 667         struct vring_tx_data *txdata;
 668
 669         wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d AMSDU%s\n",
 670                     evt->ringid,
 671                     evt->status == WMI_BA_AGREED ? "OK" : "N/A",
 672                     evt->agg_wsize, __le16_to_cpu(evt->ba_timeout),
 673                     evt->amsdu ? "+" : "-");
 674
 675         if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
 676                 wil_err(wil, "invalid ring id %d\n", evt->ringid);
 677                 return;
 678         }
 679
 680         if (evt->status != WMI_BA_AGREED) {
 681                 evt->ba_timeout = 0;
 682                 evt->agg_wsize = 0;
 683                 evt->amsdu = 0;
 684         }
 685
 686         txdata = &wil->vring_tx_data[evt->ringid];
 687
 688         txdata->agg_timeout = le16_to_cpu(evt->ba_timeout);
 689         txdata->agg_wsize = evt->agg_wsize;
 690         txdata->agg_amsdu = evt->amsdu;
 691         txdata->addba_in_progress = false;
 692 }
 693
 694 static void wmi_evt_addba_rx_req(struct wil6210_priv *wil, int id, void *d,
 695                                  int len)
 696 {
 697         struct wmi_rcp_addba_req_event *evt = d;
 698
 699         wil_addba_rx_request(wil, evt->cidxtid, evt->dialog_token,
 700                              evt->ba_param_set, evt->ba_timeout,
 701                              evt->ba_seq_ctrl);
 702 }
 703
 704 static void wmi_evt_delba(struct wil6210_priv *wil, int id, void *d, int len)
 705 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
 706 {
 707         struct wmi_delba_event *evt = d;
 708         u8 cid, tid;
 709         u16 reason = __le16_to_cpu(evt->reason);
 710         struct wil_sta_info *sta;
 711         struct wil_tid_ampdu_rx *r;
 712
 713         might_sleep();
 714         parse_cidxtid(evt->cidxtid, &cid, &tid);
 715         wil_dbg_wmi(wil, "DELBA CID %d TID %d from %s reason %d\n",
 716                     cid, tid,
 717                     evt->from_initiator ? "originator" : "recipient",
 718                     reason);
 719         if (!evt->from_initiator) {
 720                 int i;
 721                 /* find Tx vring it belongs to */
 722                 for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) {
 723                         if ((wil->vring2cid_tid[i][0] == cid) &&
 724                             (wil->vring2cid_tid[i][1] == tid)) {
 725                                 struct vring_tx_data *txdata =
 726                                         &wil->vring_tx_data[i];
 727
 728                                 wil_dbg_wmi(wil, "DELBA Tx vring %d\n", i);
 729                                 txdata->agg_timeout = 0;
 730                                 txdata->agg_wsize = 0;
 731                                 txdata->addba_in_progress = false;
 732
 733                                 break; /* max. 1 matching ring */
 734                         }
 735                 }
 736                 if (i >= ARRAY_SIZE(wil->vring2cid_tid))
 737                         wil_err(wil, "DELBA: unable to find Tx vring\n");
 738                 return;
 739         }
 740
 741         sta = &wil->sta[cid];
 742
 743         spin_lock_bh(&sta->tid_rx_lock);
 744
 745         r = sta->tid_rx[tid];
 746         sta->tid_rx[tid] = NULL;
 747         wil_tid_ampdu_rx_free(wil, r);
 748
 749         spin_unlock_bh(&sta->tid_rx_lock);
 750 }
 751
 752 /**
 753  * Some events are ignored for purpose; and need not be interpreted as
 754  * "unhandled events"
 755  */
 756 static void wmi_evt_ignore(struct wil6210_priv *wil, int id, void *d, int len)
 757 {
 758         wil_dbg_wmi(wil, "Ignore event 0x%04x len %d\n", id, len);
 759 }
 760
 761 static const struct {
 762         int eventid;
 763         void (*handler)(struct wil6210_priv *wil, int eventid,
 764                         void *data, int data_len);
 765 } wmi_evt_handlers[] = {
 766         {WMI_READY_EVENTID,             wmi_evt_ready},
 767         {WMI_FW_READY_EVENTID,                  wmi_evt_ignore},
 768         {WMI_RX_MGMT_PACKET_EVENTID,    wmi_evt_rx_mgmt},
 769         {WMI_TX_MGMT_PACKET_EVENTID,            wmi_evt_tx_mgmt},
 770         {WMI_SCAN_COMPLETE_EVENTID,     wmi_evt_scan_complete},
 771         {WMI_CONNECT_EVENTID,           wmi_evt_connect},
 772         {WMI_DISCONNECT_EVENTID,        wmi_evt_disconnect},
 773         {WMI_EAPOL_RX_EVENTID,          wmi_evt_eapol_rx},
 774         {WMI_BA_STATUS_EVENTID,         wmi_evt_ba_status},
 775         {WMI_RCP_ADDBA_REQ_EVENTID,     wmi_evt_addba_rx_req},
 776         {WMI_DELBA_EVENTID,             wmi_evt_delba},
 777         {WMI_VRING_EN_EVENTID,          wmi_evt_vring_en},
 778         {WMI_DATA_PORT_OPEN_EVENTID,            wmi_evt_ignore},
 779 };
 780
 781 /*
 782  * Run in IRQ context
 783  * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
 784  * that will be eventually handled by the @wmi_event_worker in the thread
 785  * context of thread "wil6210_wmi"
 786  */
 787 void wmi_recv_cmd(struct wil6210_priv *wil)
 788 {
 789         struct wil6210_mbox_ring_desc d_tail;
 790         struct wil6210_mbox_hdr hdr;
 791         struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
 792         struct pending_wmi_event *evt;
 793         u8 *cmd;
 794         void __iomem *src;
 795         ulong flags;
 796         unsigned n;
 797         unsigned int num_immed_reply = 0;
 798
 799         if (!test_bit(wil_status_mbox_ready, wil->status)) {
 800                 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 801                 return;
 802         }
 803
 804         for (n = 0;; n++) {
 805                 u16 len;
 806                 bool q;
 807                 bool immed_reply = false;
 808
 809                 r->head = wil_r(wil, RGF_MBOX +
 810                                 offsetof(struct wil6210_mbox_ctl, rx.head));
 811                 if (r->tail == r->head)
 812                         break;
 813
 814                 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
 815                             r->head, r->tail);
 816                 /* read cmd descriptor from tail */
 817                 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
 818                                      sizeof(struct wil6210_mbox_ring_desc));
 819                 if (d_tail.sync == 0) {
 820                         wil_err(wil, "Mbox evt not owned by FW?\n");
 821                         break;
 822                 }
 823
 824                 /* read cmd header from descriptor */
 825                 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
 826                         wil_err(wil, "Mbox evt at 0x%08x?\n",
 827                                 le32_to_cpu(d_tail.addr));
 828                         break;
 829                 }
 830                 len = le16_to_cpu(hdr.len);
 831                 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
 832                             le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
 833                             hdr.flags);
 834
 835                 /* read cmd buffer from descriptor */
 836                 src = wmi_buffer(wil, d_tail.addr) +
 837                       sizeof(struct wil6210_mbox_hdr);
 838                 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
 839                                              event.wmi) + len, 4),
 840                               GFP_KERNEL);
 841                 if (!evt)
 842                         break;
 843
 844                 evt->event.hdr = hdr;
 845                 cmd = (void *)&evt->event.wmi;
 846                 wil_memcpy_fromio_32(cmd, src, len);
 847                 /* mark entry as empty */
 848                 wil_w(wil, r->tail +
 849                       offsetof(struct wil6210_mbox_ring_desc, sync), 0);
 850                 /* indicate */
 851                 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
 852                     (len >= sizeof(struct wmi_cmd_hdr))) {
 853                         struct wmi_cmd_hdr *wmi = &evt->event.wmi;
 854                         u16 id = le16_to_cpu(wmi->command_id);
 855                         u32 tstamp = le32_to_cpu(wmi->fw_timestamp);
 856                         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 857                         if (wil->reply_id && wil->reply_id == id) {
 858                                 if (wil->reply_buf) {
 859                                         memcpy(wil->reply_buf, wmi,
 860                                                min(len, wil->reply_size));
 861                                         immed_reply = true;
 862                                 }
 863                         }
 864                         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 865
 866                         wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 867                                     id, wmi->mid, tstamp);
 868                         trace_wil6210_wmi_event(wmi, &wmi[1],
 869                                                 len - sizeof(*wmi));
 870                 }
 871                 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
 872                                  &evt->event.hdr, sizeof(hdr) + len, true);
 873
 874                 /* advance tail */
 875                 r->tail = r->base + ((r->tail - r->base +
 876                           sizeof(struct wil6210_mbox_ring_desc)) % r->size);
 877                 wil_w(wil, RGF_MBOX +
 878                       offsetof(struct wil6210_mbox_ctl, rx.tail), r->tail);
 879
 880                 if (immed_reply) {
 881                         wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
 882                                     __func__, wil->reply_id);
 883                         kfree(evt);
 884                         num_immed_reply++;
 885                         complete(&wil->wmi_call);
 886                 } else {
 887                         /* add to the pending list */
 888                         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 889                         list_add_tail(&evt->list, &wil->pending_wmi_ev);
 890                         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 891                         q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
 892                         wil_dbg_wmi(wil, "queue_work -> %d\n", q);
 893                 }
 894         }
 895         /* normally, 1 event per IRQ should be processed */
 896         wil_dbg_wmi(wil, "%s -> %d events queued, %d completed\n", __func__,
 897                     n - num_immed_reply, num_immed_reply);
 898 }
 899
 900 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 901              u16 reply_id, void *reply, u8 reply_size, int to_msec)
 902 {
 903         int rc;
 904         unsigned long remain;
 905
 906         mutex_lock(&wil->wmi_mutex);
 907
 908         spin_lock(&wil->wmi_ev_lock);
 909         wil->reply_id = reply_id;
 910         wil->reply_buf = reply;
 911         wil->reply_size = reply_size;
 912         spin_unlock(&wil->wmi_ev_lock);
 913
 914         rc = __wmi_send(wil, cmdid, buf, len);
 915         if (rc)
 916                 goto out;
 917
 918         remain = wait_for_completion_timeout(&wil->wmi_call,
 919                                              msecs_to_jiffies(to_msec));
 920         if (0 == remain) {
 921                 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 922                         cmdid, reply_id, to_msec);
 923                 rc = -ETIME;
 924         } else {
 925                 wil_dbg_wmi(wil,
 926                             "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
 927                             cmdid, reply_id,
 928                             to_msec - jiffies_to_msecs(remain));
 929         }
 930
 931 out:
 932         spin_lock(&wil->wmi_ev_lock);
 933         wil->reply_id = 0;
 934         wil->reply_buf = NULL;
 935         wil->reply_size = 0;
 936         spin_unlock(&wil->wmi_ev_lock);
 937
 938         mutex_unlock(&wil->wmi_mutex);
 939
 940         return rc;
 941 }
 942
 943 int wmi_echo(struct wil6210_priv *wil)
 944 {
 945         struct wmi_echo_cmd cmd = {
 946                 .value = cpu_to_le32(0x12345678),
 947         };
 948
 949         return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
 950                         WMI_ECHO_RSP_EVENTID, NULL, 0, 50);
 951 }
 952
 953 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
 954 {
 955         struct wmi_set_mac_address_cmd cmd;
 956
 957         ether_addr_copy(cmd.mac, addr);
 958
 959         wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
 960
 961         return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
 962 }
 963
 964 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype,
 965                   u8 chan, u8 hidden_ssid, u8 is_go)
 966 {
 967         int rc;
 968
 969         struct wmi_pcp_start_cmd cmd = {
 970                 .bcon_interval = cpu_to_le16(bi),
 971                 .network_type = wmi_nettype,
 972                 .disable_sec_offload = 1,
 973                 .channel = chan - 1,
 974                 .pcp_max_assoc_sta = max_assoc_sta,
 975                 .hidden_ssid = hidden_ssid,
 976                 .is_go = is_go,
 977         };
 978         struct {
 979                 struct wmi_cmd_hdr wmi;
 980                 struct wmi_pcp_started_event evt;
 981         } __packed reply;
 982
 983         if (!wil->privacy)
 984                 cmd.disable_sec = 1;
 985
 986         if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
 987             (cmd.pcp_max_assoc_sta <= 0)) {
 988                 wil_info(wil,
 989                          "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
 990                          max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
 991                 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
 992         }
 993
 994         /*
 995          * Processing time may be huge, in case of secure AP it takes about
 996          * 3500ms for FW to start AP
 997          */
 998         rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
 999                       WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
1000         if (rc)
1001                 return rc;
1002
1003         if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
1004                 rc = -EINVAL;
1005
1006         return rc;
1007 }
1008
1009 int wmi_pcp_stop(struct wil6210_priv *wil)
1010 {
1011         return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
1012                         WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
1013 }
1014
1015 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
1016 {
1017         struct wmi_set_ssid_cmd cmd = {
1018                 .ssid_len = cpu_to_le32(ssid_len),
1019         };
1020
1021         if (ssid_len > sizeof(cmd.ssid))
1022                 return -EINVAL;
1023
1024         memcpy(cmd.ssid, ssid, ssid_len);
1025
1026         return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
1027 }
1028
1029 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
1030 {
1031         int rc;
1032         struct {
1033                 struct wmi_cmd_hdr wmi;
1034                 struct wmi_set_ssid_cmd cmd;
1035         } __packed reply;
1036         int len; /* reply.cmd.ssid_len in CPU order */
1037
1038         rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
1039                       &reply, sizeof(reply), 20);
1040         if (rc)
1041                 return rc;
1042
1043         len = le32_to_cpu(reply.cmd.ssid_len);
1044         if (len > sizeof(reply.cmd.ssid))
1045                 return -EINVAL;
1046
1047         *ssid_len = len;
1048         memcpy(ssid, reply.cmd.ssid, len);
1049
1050         return 0;
1051 }
1052
1053 int wmi_set_channel(struct wil6210_priv *wil, int channel)
1054 {
1055         struct wmi_set_pcp_channel_cmd cmd = {
1056                 .channel = channel - 1,
1057         };
1058
1059         return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
1060 }
1061
1062 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
1063 {
1064         int rc;
1065         struct {
1066                 struct wmi_cmd_hdr wmi;
1067                 struct wmi_set_pcp_channel_cmd cmd;
1068         } __packed reply;
1069
1070         rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
1071                       WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
1072         if (rc)
1073                 return rc;
1074
1075         if (reply.cmd.channel > 3)
1076                 return -EINVAL;
1077
1078         *channel = reply.cmd.channel + 1;
1079
1080         return 0;
1081 }
1082
1083 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel, int bi)
1084 {
1085         int rc;
1086         struct wmi_p2p_cfg_cmd cmd = {
1087                 .discovery_mode = WMI_DISCOVERY_MODE_PEER2PEER,
1088                 .bcon_interval = cpu_to_le16(bi),
1089                 .channel = channel - 1,
1090         };
1091         struct {
1092                 struct wmi_cmd_hdr wmi;
1093                 struct wmi_p2p_cfg_done_event evt;
1094         } __packed reply;
1095
1096         wil_dbg_wmi(wil, "sending WMI_P2P_CFG_CMDID\n");
1097
1098         rc = wmi_call(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd),
1099                       WMI_P2P_CFG_DONE_EVENTID, &reply, sizeof(reply), 300);
1100         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1101                 wil_err(wil, "P2P_CFG failed. status %d\n", reply.evt.status);
1102                 rc = -EINVAL;
1103         }
1104
1105         return rc;
1106 }
1107
1108 int wmi_start_listen(struct wil6210_priv *wil)
1109 {
1110         int rc;
1111         struct {
1112                 struct wmi_cmd_hdr wmi;
1113                 struct wmi_listen_started_event evt;
1114         } __packed reply;
1115
1116         wil_dbg_wmi(wil, "sending WMI_START_LISTEN_CMDID\n");
1117
1118         rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1119                       WMI_LISTEN_STARTED_EVENTID, &reply, sizeof(reply), 300);
1120         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1121                 wil_err(wil, "device failed to start listen. status %d\n",
1122                         reply.evt.status);
1123                 rc = -EINVAL;
1124         }
1125
1126         return rc;
1127 }
1128
1129 int wmi_start_search(struct wil6210_priv *wil)
1130 {
1131         int rc;
1132         struct {
1133                 struct wmi_cmd_hdr wmi;
1134                 struct wmi_search_started_event evt;
1135         } __packed reply;
1136
1137         wil_dbg_wmi(wil, "sending WMI_START_SEARCH_CMDID\n");
1138
1139         rc = wmi_call(wil, WMI_START_SEARCH_CMDID, NULL, 0,
1140                       WMI_SEARCH_STARTED_EVENTID, &reply, sizeof(reply), 300);
1141         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1142                 wil_err(wil, "device failed to start search. status %d\n",
1143                         reply.evt.status);
1144                 rc = -EINVAL;
1145         }
1146
1147         return rc;
1148 }
1149
1150 int wmi_stop_discovery(struct wil6210_priv *wil)
1151 {
1152         int rc;
1153
1154         wil_dbg_wmi(wil, "sending WMI_DISCOVERY_STOP_CMDID\n");
1155
1156         rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1157                       WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 100);
1158
1159         if (rc)
1160                 wil_err(wil, "Failed to stop discovery\n");
1161
1162         return rc;
1163 }
1164
1165 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
1166                        const void *mac_addr, int key_usage)
1167 {
1168         struct wmi_delete_cipher_key_cmd cmd = {
1169                 .key_index = key_index,
1170         };
1171
1172         if (mac_addr)
1173                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1174
1175         return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1176 }
1177
1178 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
1179                        const void *mac_addr, int key_len, const void *key,
1180                        int key_usage)
1181 {
1182         struct wmi_add_cipher_key_cmd cmd = {
1183                 .key_index = key_index,
1184                 .key_usage = key_usage,
1185                 .key_len = key_len,
1186         };
1187
1188         if (!key || (key_len > sizeof(cmd.key)))
1189                 return -EINVAL;
1190
1191         memcpy(cmd.key, key, key_len);
1192         if (mac_addr)
1193                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1194
1195         return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1196 }
1197
1198 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
1199 {
1200         static const char *const names[] = {
1201                 [WMI_FRAME_BEACON]      = "BEACON",
1202                 [WMI_FRAME_PROBE_REQ]   = "PROBE_REQ",
1203                 [WMI_FRAME_PROBE_RESP]  = "WMI_FRAME_PROBE_RESP",
1204                 [WMI_FRAME_ASSOC_REQ]   = "WMI_FRAME_ASSOC_REQ",
1205                 [WMI_FRAME_ASSOC_RESP]  = "WMI_FRAME_ASSOC_RESP",
1206         };
1207         int rc;
1208         u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
1209         struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
1210
1211         if (!cmd) {
1212                 rc = -ENOMEM;
1213                 goto out;
1214         }
1215         if (!ie)
1216                 ie_len = 0;
1217
1218         cmd->mgmt_frm_type = type;
1219         /* BUG: FW API define ieLen as u8. Will fix FW */
1220         cmd->ie_len = cpu_to_le16(ie_len);
1221         memcpy(cmd->ie_info, ie, ie_len);
1222         rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
1223         kfree(cmd);
1224 out:
1225         if (rc) {
1226                 const char *name = type < ARRAY_SIZE(names) ?
1227                                    names[type] : "??";
1228                 wil_err(wil, "set_ie(%d %s) failed : %d\n", type, name, rc);
1229         }
1230
1231         return rc;
1232 }
1233
1234 /**
1235  * wmi_rxon - turn radio on/off
1236  * @on:         turn on if true, off otherwise
1237  *
1238  * Only switch radio. Channel should be set separately.
1239  * No timeout for rxon - radio turned on forever unless some other call
1240  * turns it off
1241  */
1242 int wmi_rxon(struct wil6210_priv *wil, bool on)
1243 {
1244         int rc;
1245         struct {
1246                 struct wmi_cmd_hdr wmi;
1247                 struct wmi_listen_started_event evt;
1248         } __packed reply;
1249
1250         wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1251
1252         if (on) {
1253                 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1254                               WMI_LISTEN_STARTED_EVENTID,
1255                               &reply, sizeof(reply), 100);
1256                 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1257                         rc = -EINVAL;
1258         } else {
1259                 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1260                               WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1261         }
1262
1263         return rc;
1264 }
1265
1266 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1267 {
1268         struct wireless_dev *wdev = wil->wdev;
1269         struct net_device *ndev = wil_to_ndev(wil);
1270         struct wmi_cfg_rx_chain_cmd cmd = {
1271                 .action = WMI_RX_CHAIN_ADD,
1272                 .rx_sw_ring = {
1273                         .max_mpdu_size = cpu_to_le16(wil_mtu2macbuf(mtu_max)),
1274                         .ring_mem_base = cpu_to_le64(vring->pa),
1275                         .ring_size = cpu_to_le16(vring->size),
1276                 },
1277                 .mid = 0, /* TODO - what is it? */
1278                 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1279                 .reorder_type = WMI_RX_SW_REORDER,
1280                 .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh),
1281         };
1282         struct {
1283                 struct wmi_cmd_hdr wmi;
1284                 struct wmi_cfg_rx_chain_done_event evt;
1285         } __packed evt;
1286         int rc;
1287
1288         if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1289                 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1290
1291                 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1292                 if (ch)
1293                         cmd.sniffer_cfg.channel = ch->hw_value - 1;
1294                 cmd.sniffer_cfg.phy_info_mode =
1295                         cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1296                 cmd.sniffer_cfg.phy_support =
1297                         cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1298                                     ? WMI_SNIFFER_CP : WMI_SNIFFER_BOTH_PHYS);
1299         } else {
1300                 /* Initialize offload (in non-sniffer mode).
1301                  * Linux IP stack always calculates IP checksum
1302                  * HW always calculate TCP/UDP checksum
1303                  */
1304                 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1305         }
1306
1307         if (rx_align_2)
1308                 cmd.l2_802_3_offload_ctrl |=
1309                                 L2_802_3_OFFLOAD_CTRL_SNAP_KEEP_MSK;
1310
1311         /* typical time for secure PCP is 840ms */
1312         rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1313                       WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1314         if (rc)
1315                 return rc;
1316
1317         vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1318
1319         wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1320                      le32_to_cpu(evt.evt.status), vring->hwtail);
1321
1322         if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1323                 rc = -EINVAL;
1324
1325         return rc;
1326 }
1327
1328 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf)
1329 {
1330         int rc;
1331         struct wmi_temp_sense_cmd cmd = {
1332                 .measure_baseband_en = cpu_to_le32(!!t_bb),
1333                 .measure_rf_en = cpu_to_le32(!!t_rf),
1334                 .measure_mode = cpu_to_le32(TEMPERATURE_MEASURE_NOW),
1335         };
1336         struct {
1337                 struct wmi_cmd_hdr wmi;
1338                 struct wmi_temp_sense_done_event evt;
1339         } __packed reply;
1340
1341         rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1342                       WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1343         if (rc)
1344                 return rc;
1345
1346         if (t_bb)
1347                 *t_bb = le32_to_cpu(reply.evt.baseband_t1000);
1348         if (t_rf)
1349                 *t_rf = le32_to_cpu(reply.evt.rf_t1000);
1350
1351         return 0;
1352 }
1353
1354 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason,
1355                        bool full_disconnect)
1356 {
1357         int rc;
1358         u16 reason_code;
1359         struct wmi_disconnect_sta_cmd cmd = {
1360                 .disconnect_reason = cpu_to_le16(reason),
1361         };
1362         struct {
1363                 struct wmi_cmd_hdr wmi;
1364                 struct wmi_disconnect_event evt;
1365         } __packed reply;
1366
1367         ether_addr_copy(cmd.dst_mac, mac);
1368
1369         wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1370
1371         rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd),
1372                       WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 1000);
1373         /* failure to disconnect in reasonable time treated as FW error */
1374         if (rc) {
1375                 wil_fw_error_recovery(wil);
1376                 return rc;
1377         }
1378
1379         if (full_disconnect) {
1380                 /* call event handler manually after processing wmi_call,
1381                  * to avoid deadlock - disconnect event handler acquires
1382                  * wil->mutex while it is already held here
1383                  */
1384                 reason_code = le16_to_cpu(reply.evt.protocol_reason_status);
1385
1386                 wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
1387                             reply.evt.bssid, reason_code,
1388                             reply.evt.disconnect_reason);
1389
1390                 wil->sinfo_gen++;
1391                 wil6210_disconnect(wil, reply.evt.bssid, reason_code, true);
1392         }
1393         return 0;
1394 }
1395
1396 int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout)
1397 {
1398         struct wmi_vring_ba_en_cmd cmd = {
1399                 .ringid = ringid,
1400                 .agg_max_wsize = size,
1401                 .ba_timeout = cpu_to_le16(timeout),
1402                 .amsdu = 0,
1403         };
1404
1405         wil_dbg_wmi(wil, "%s(ring %d size %d timeout %d)\n", __func__,
1406                     ringid, size, timeout);
1407
1408         return wmi_send(wil, WMI_VRING_BA_EN_CMDID, &cmd, sizeof(cmd));
1409 }
1410
1411 int wmi_delba_tx(struct wil6210_priv *wil, u8 ringid, u16 reason)
1412 {
1413         struct wmi_vring_ba_dis_cmd cmd = {
1414                 .ringid = ringid,
1415                 .reason = cpu_to_le16(reason),
1416         };
1417
1418         wil_dbg_wmi(wil, "%s(ring %d reason %d)\n", __func__,
1419                     ringid, reason);
1420
1421         return wmi_send(wil, WMI_VRING_BA_DIS_CMDID, &cmd, sizeof(cmd));
1422 }
1423
1424 int wmi_delba_rx(struct wil6210_priv *wil, u8 cidxtid, u16 reason)
1425 {
1426         struct wmi_rcp_delba_cmd cmd = {
1427                 .cidxtid = cidxtid,
1428                 .reason = cpu_to_le16(reason),
1429         };
1430
1431         wil_dbg_wmi(wil, "%s(CID %d TID %d reason %d)\n", __func__,
1432                     cidxtid & 0xf, (cidxtid >> 4) & 0xf, reason);
1433
1434         return wmi_send(wil, WMI_RCP_DELBA_CMDID, &cmd, sizeof(cmd));
1435 }
1436
1437 int wmi_addba_rx_resp(struct wil6210_priv *wil, u8 cid, u8 tid, u8 token,
1438                       u16 status, bool amsdu, u16 agg_wsize, u16 timeout)
1439 {
1440         int rc;
1441         struct wmi_rcp_addba_resp_cmd cmd = {
1442                 .cidxtid = mk_cidxtid(cid, tid),
1443                 .dialog_token = token,
1444                 .status_code = cpu_to_le16(status),
1445                 /* bit 0: A-MSDU supported
1446                  * bit 1: policy (should be 0 for us)
1447                  * bits 2..5: TID
1448                  * bits 6..15: buffer size
1449                  */
1450                 .ba_param_set = cpu_to_le16((amsdu ? 1 : 0) | (tid << 2) |
1451                                             (agg_wsize << 6)),
1452                 .ba_timeout = cpu_to_le16(timeout),
1453         };
1454         struct {
1455                 struct wmi_cmd_hdr wmi;
1456                 struct wmi_rcp_addba_resp_sent_event evt;
1457         } __packed reply;
1458
1459         wil_dbg_wmi(wil,
1460                     "ADDBA response for CID %d TID %d size %d timeout %d status %d AMSDU%s\n",
1461                     cid, tid, agg_wsize, timeout, status, amsdu ? "+" : "-");
1462
1463         rc = wmi_call(wil, WMI_RCP_ADDBA_RESP_CMDID, &cmd, sizeof(cmd),
1464                       WMI_RCP_ADDBA_RESP_SENT_EVENTID, &reply, sizeof(reply),
1465                       100);
1466         if (rc)
1467                 return rc;
1468
1469         if (reply.evt.status) {
1470                 wil_err(wil, "ADDBA response failed with status %d\n",
1471                         le16_to_cpu(reply.evt.status));
1472                 rc = -EINVAL;
1473         }
1474
1475         return rc;
1476 }
1477
1478 void wmi_event_flush(struct wil6210_priv *wil)
1479 {
1480         struct pending_wmi_event *evt, *t;
1481
1482         wil_dbg_wmi(wil, "%s()\n", __func__);
1483
1484         list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1485                 list_del(&evt->list);
1486                 kfree(evt);
1487         }
1488 }
1489
1490 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1491                                  void *d, int len)
1492 {
1493         uint i;
1494
1495         for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1496                 if (wmi_evt_handlers[i].eventid == id) {
1497                         wmi_evt_handlers[i].handler(wil, id, d, len);
1498                         return true;
1499                 }
1500         }
1501
1502         return false;
1503 }
1504
1505 static void wmi_event_handle(struct wil6210_priv *wil,
1506                              struct wil6210_mbox_hdr *hdr)
1507 {
1508         u16 len = le16_to_cpu(hdr->len);
1509
1510         if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1511             (len >= sizeof(struct wmi_cmd_hdr))) {
1512                 struct wmi_cmd_hdr *wmi = (void *)(&hdr[1]);
1513                 void *evt_data = (void *)(&wmi[1]);
1514                 u16 id = le16_to_cpu(wmi->command_id);
1515
1516                 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1517                             id, wil->reply_id);
1518                 /* check if someone waits for this event */
1519                 if (wil->reply_id && wil->reply_id == id) {
1520                         WARN_ON(wil->reply_buf);
1521                         wmi_evt_call_handler(wil, id, evt_data,
1522                                              len - sizeof(*wmi));
1523                         wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
1524                                     __func__, id);
1525                         complete(&wil->wmi_call);
1526                         return;
1527                 }
1528                 /* unsolicited event */
1529                 /* search for handler */
1530                 if (!wmi_evt_call_handler(wil, id, evt_data,
1531                                           len - sizeof(*wmi))) {
1532                         wil_info(wil, "Unhandled event 0x%04x\n", id);
1533                 }
1534         } else {
1535                 wil_err(wil, "Unknown event type\n");
1536                 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1537                                hdr, sizeof(*hdr) + len, true);
1538         }
1539 }
1540
1541 /*
1542  * Retrieve next WMI event from the pending list
1543  */
1544 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1545 {
1546         ulong flags;
1547         struct list_head *ret = NULL;
1548
1549         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1550
1551         if (!list_empty(&wil->pending_wmi_ev)) {
1552                 ret = wil->pending_wmi_ev.next;
1553                 list_del(ret);
1554         }
1555
1556         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1557
1558         return ret;
1559 }
1560
1561 /*
1562  * Handler for the WMI events
1563  */
1564 void wmi_event_worker(struct work_struct *work)
1565 {
1566         struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1567                                                  wmi_event_worker);
1568         struct pending_wmi_event *evt;
1569         struct list_head *lh;
1570
1571         wil_dbg_wmi(wil, "Start %s\n", __func__);
1572         while ((lh = next_wmi_ev(wil)) != NULL) {
1573                 evt = list_entry(lh, struct pending_wmi_event, list);
1574                 wmi_event_handle(wil, &evt->event.hdr);
1575                 kfree(evt);
1576         }
1577         wil_dbg_wmi(wil, "Finished %s\n", __func__);
1578 }