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 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                 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, IEEE80211_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                 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
 372                                                 d_len, signal, GFP_KERNEL);
 373                 if (bss) {
 374                         wil_dbg_wmi(wil, "Added BSS %pM\n",
 375                                     rx_mgmt_frame->bssid);
 376                         cfg80211_put_bss(wiphy, bss);
 377                 } else {
 378                         wil_err(wil, "cfg80211_inform_bss_frame() failed\n");
 379                 }
 380         } else {
 381                 cfg80211_rx_mgmt(wil->wdev, freq, signal,
 382                                  (void *)rx_mgmt_frame, d_len, 0);
 383         }
 384 }
 385
 386 static void wmi_evt_tx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 387 {
 388         struct wmi_tx_mgmt_packet_event *data = d;
 389         struct ieee80211_mgmt *mgmt_frame =
 390                         (struct ieee80211_mgmt *)data->payload;
 391         int flen = len - offsetof(struct wmi_tx_mgmt_packet_event, payload);
 392
 393         wil_hex_dump_wmi("MGMT Tx ", DUMP_PREFIX_OFFSET, 16, 1, mgmt_frame,
 394                          flen, true);
 395 }
 396
 397 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
 398                                   void *d, int len)
 399 {
 400         if (wil->scan_request) {
 401                 struct wmi_scan_complete_event *data = d;
 402                 bool aborted = (data->status != WMI_SCAN_SUCCESS);
 403
 404                 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
 405                 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
 406                              wil->scan_request, aborted);
 407
 408                 del_timer_sync(&wil->scan_timer);
 409                 cfg80211_scan_done(wil->scan_request, aborted);
 410                 wil->scan_request = NULL;
 411         } else {
 412                 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
 413         }
 414 }
 415
 416 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
 417 {
 418         struct net_device *ndev = wil_to_ndev(wil);
 419         struct wireless_dev *wdev = wil->wdev;
 420         struct wmi_connect_event *evt = d;
 421         int ch; /* channel number */
 422         struct station_info sinfo;
 423         u8 *assoc_req_ie, *assoc_resp_ie;
 424         size_t assoc_req_ielen, assoc_resp_ielen;
 425         /* capinfo(u16) + listen_interval(u16) + IEs */
 426         const size_t assoc_req_ie_offset = sizeof(u16) * 2;
 427         /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
 428         const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
 429         int rc;
 430
 431         if (len < sizeof(*evt)) {
 432                 wil_err(wil, "Connect event too short : %d bytes\n", len);
 433                 return;
 434         }
 435         if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
 436                    evt->assoc_resp_len) {
 437                 wil_err(wil,
 438                         "Connect event corrupted : %d != %d + %d + %d + %d\n",
 439                         len, (int)sizeof(*evt), evt->beacon_ie_len,
 440                         evt->assoc_req_len, evt->assoc_resp_len);
 441                 return;
 442         }
 443         if (evt->cid >= WIL6210_MAX_CID) {
 444                 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
 445                 return;
 446         }
 447
 448         ch = evt->channel + 1;
 449         wil_info(wil, "Connect %pM channel [%d] cid %d\n",
 450                  evt->bssid, ch, evt->cid);
 451         wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
 452                          evt->assoc_info, len - sizeof(*evt), true);
 453
 454         /* figure out IE's */
 455         assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
 456                                         assoc_req_ie_offset];
 457         assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
 458         if (evt->assoc_req_len <= assoc_req_ie_offset) {
 459                 assoc_req_ie = NULL;
 460                 assoc_req_ielen = 0;
 461         }
 462
 463         assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
 464                                          evt->assoc_req_len +
 465                                          assoc_resp_ie_offset];
 466         assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
 467         if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
 468                 assoc_resp_ie = NULL;
 469                 assoc_resp_ielen = 0;
 470         }
 471
 472         mutex_lock(&wil->mutex);
 473         if (test_bit(wil_status_resetting, wil->status) ||
 474             !test_bit(wil_status_fwready, wil->status)) {
 475                 wil_err(wil, "status_resetting, cancel connect event, CID %d\n",
 476                         evt->cid);
 477                 mutex_unlock(&wil->mutex);
 478                 /* no need for cleanup, wil_reset will do that */
 479                 return;
 480         }
 481
 482         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 483             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 484                 if (!test_bit(wil_status_fwconnecting, wil->status)) {
 485                         wil_err(wil, "Not in connecting state\n");
 486                         mutex_unlock(&wil->mutex);
 487                         return;
 488                 }
 489                 del_timer_sync(&wil->connect_timer);
 490         }
 491
 492         /* FIXME FW can transmit only ucast frames to peer */
 493         /* FIXME real ring_id instead of hard coded 0 */
 494         ether_addr_copy(wil->sta[evt->cid].addr, evt->bssid);
 495         wil->sta[evt->cid].status = wil_sta_conn_pending;
 496
 497         rc = wil_tx_init(wil, evt->cid);
 498         if (rc) {
 499                 wil_err(wil, "%s: config tx vring failed for CID %d, rc (%d)\n",
 500                         __func__, evt->cid, rc);
 501                 wmi_disconnect_sta(wil, wil->sta[evt->cid].addr,
 502                                    WLAN_REASON_UNSPECIFIED, false);
 503         } else {
 504                 wil_info(wil, "%s: successful connection to CID %d\n",
 505                          __func__, evt->cid);
 506         }
 507
 508         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 509             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 510                 if (rc) {
 511                         netif_tx_stop_all_queues(ndev);
 512                         netif_carrier_off(ndev);
 513                         wil_err(wil,
 514                                 "%s: cfg80211_connect_result with failure\n",
 515                                 __func__);
 516                         cfg80211_connect_result(ndev, evt->bssid, NULL, 0,
 517                                                 NULL, 0,
 518                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
 519                                                 GFP_KERNEL);
 520                         goto out;
 521                 } else {
 522                         cfg80211_connect_result(ndev, evt->bssid,
 523                                                 assoc_req_ie, assoc_req_ielen,
 524                                                 assoc_resp_ie, assoc_resp_ielen,
 525                                                 WLAN_STATUS_SUCCESS,
 526                                                 GFP_KERNEL);
 527                 }
 528         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 529                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 530                 if (rc)
 531                         goto out;
 532
 533                 memset(&sinfo, 0, sizeof(sinfo));
 534
 535                 sinfo.generation = wil->sinfo_gen++;
 536
 537                 if (assoc_req_ie) {
 538                         sinfo.assoc_req_ies = assoc_req_ie;
 539                         sinfo.assoc_req_ies_len = assoc_req_ielen;
 540                 }
 541
 542                 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
 543         } else {
 544                 wil_err(wil, "%s: unhandled iftype %d for CID %d\n",
 545                         __func__, wdev->iftype, evt->cid);
 546                 goto out;
 547         }
 548
 549         wil->sta[evt->cid].status = wil_sta_connected;
 550         set_bit(wil_status_fwconnected, wil->status);
 551         netif_tx_wake_all_queues(ndev);
 552
 553 out:
 554         if (rc)
 555                 wil->sta[evt->cid].status = wil_sta_unused;
 556         clear_bit(wil_status_fwconnecting, wil->status);
 557         mutex_unlock(&wil->mutex);
 558 }
 559
 560 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 561                                void *d, int len)
 562 {
 563         struct wmi_disconnect_event *evt = d;
 564         u16 reason_code = le16_to_cpu(evt->protocol_reason_status);
 565
 566         wil_info(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
 567                  evt->bssid, reason_code, evt->disconnect_reason);
 568
 569         wil->sinfo_gen++;
 570
 571         mutex_lock(&wil->mutex);
 572         wil6210_disconnect(wil, evt->bssid, reason_code, true);
 573         mutex_unlock(&wil->mutex);
 574 }
 575
 576 /*
 577  * Firmware reports EAPOL frame using WME event.
 578  * Reconstruct Ethernet frame and deliver it via normal Rx
 579  */
 580 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
 581                              void *d, int len)
 582 {
 583         struct net_device *ndev = wil_to_ndev(wil);
 584         struct wmi_eapol_rx_event *evt = d;
 585         u16 eapol_len = le16_to_cpu(evt->eapol_len);
 586         int sz = eapol_len + ETH_HLEN;
 587         struct sk_buff *skb;
 588         struct ethhdr *eth;
 589         int cid;
 590         struct wil_net_stats *stats = NULL;
 591
 592         wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
 593                     evt->src_mac);
 594
 595         cid = wil_find_cid(wil, evt->src_mac);
 596         if (cid >= 0)
 597                 stats = &wil->sta[cid].stats;
 598
 599         if (eapol_len > 196) { /* TODO: revisit size limit */
 600                 wil_err(wil, "EAPOL too large\n");
 601                 return;
 602         }
 603
 604         skb = alloc_skb(sz, GFP_KERNEL);
 605         if (!skb) {
 606                 wil_err(wil, "Failed to allocate skb\n");
 607                 return;
 608         }
 609
 610         eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
 611         ether_addr_copy(eth->h_dest, ndev->dev_addr);
 612         ether_addr_copy(eth->h_source, evt->src_mac);
 613         eth->h_proto = cpu_to_be16(ETH_P_PAE);
 614         memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
 615         skb->protocol = eth_type_trans(skb, ndev);
 616         if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
 617                 ndev->stats.rx_packets++;
 618                 ndev->stats.rx_bytes += sz;
 619                 if (stats) {
 620                         stats->rx_packets++;
 621                         stats->rx_bytes += sz;
 622                 }
 623         } else {
 624                 ndev->stats.rx_dropped++;
 625                 if (stats)
 626                         stats->rx_dropped++;
 627         }
 628 }
 629
 630 static void wmi_evt_vring_en(struct wil6210_priv *wil, int id, void *d, int len)
 631 {
 632         struct wmi_vring_en_event *evt = d;
 633         u8 vri = evt->vring_index;
 634
 635         wil_dbg_wmi(wil, "Enable vring %d\n", vri);
 636
 637         if (vri >= ARRAY_SIZE(wil->vring_tx)) {
 638                 wil_err(wil, "Enable for invalid vring %d\n", vri);
 639                 return;
 640         }
 641         wil->vring_tx_data[vri].dot1x_open = true;
 642         if (vri == wil->bcast_vring) /* no BA for bcast */
 643                 return;
 644         if (agg_wsize >= 0)
 645                 wil_addba_tx_request(wil, vri, agg_wsize);
 646 }
 647
 648 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 649                               int len)
 650 {
 651         struct wmi_vring_ba_status_event *evt = d;
 652         struct vring_tx_data *txdata;
 653
 654         wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d AMSDU%s\n",
 655                     evt->ringid,
 656                     evt->status == WMI_BA_AGREED ? "OK" : "N/A",
 657                     evt->agg_wsize, __le16_to_cpu(evt->ba_timeout),
 658                     evt->amsdu ? "+" : "-");
 659
 660         if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
 661                 wil_err(wil, "invalid ring id %d\n", evt->ringid);
 662                 return;
 663         }
 664
 665         if (evt->status != WMI_BA_AGREED) {
 666                 evt->ba_timeout = 0;
 667                 evt->agg_wsize = 0;
 668                 evt->amsdu = 0;
 669         }
 670
 671         txdata = &wil->vring_tx_data[evt->ringid];
 672
 673         txdata->agg_timeout = le16_to_cpu(evt->ba_timeout);
 674         txdata->agg_wsize = evt->agg_wsize;
 675         txdata->agg_amsdu = evt->amsdu;
 676         txdata->addba_in_progress = false;
 677 }
 678
 679 static void wmi_evt_addba_rx_req(struct wil6210_priv *wil, int id, void *d,
 680                                  int len)
 681 {
 682         struct wmi_rcp_addba_req_event *evt = d;
 683
 684         wil_addba_rx_request(wil, evt->cidxtid, evt->dialog_token,
 685                              evt->ba_param_set, evt->ba_timeout,
 686                              evt->ba_seq_ctrl);
 687 }
 688
 689 static void wmi_evt_delba(struct wil6210_priv *wil, int id, void *d, int len)
 690 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
 691 {
 692         struct wmi_delba_event *evt = d;
 693         u8 cid, tid;
 694         u16 reason = __le16_to_cpu(evt->reason);
 695         struct wil_sta_info *sta;
 696         struct wil_tid_ampdu_rx *r;
 697
 698         might_sleep();
 699         parse_cidxtid(evt->cidxtid, &cid, &tid);
 700         wil_dbg_wmi(wil, "DELBA CID %d TID %d from %s reason %d\n",
 701                     cid, tid,
 702                     evt->from_initiator ? "originator" : "recipient",
 703                     reason);
 704         if (!evt->from_initiator) {
 705                 int i;
 706                 /* find Tx vring it belongs to */
 707                 for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) {
 708                         if ((wil->vring2cid_tid[i][0] == cid) &&
 709                             (wil->vring2cid_tid[i][1] == tid)) {
 710                                 struct vring_tx_data *txdata =
 711                                         &wil->vring_tx_data[i];
 712
 713                                 wil_dbg_wmi(wil, "DELBA Tx vring %d\n", i);
 714                                 txdata->agg_timeout = 0;
 715                                 txdata->agg_wsize = 0;
 716                                 txdata->addba_in_progress = false;
 717
 718                                 break; /* max. 1 matching ring */
 719                         }
 720                 }
 721                 if (i >= ARRAY_SIZE(wil->vring2cid_tid))
 722                         wil_err(wil, "DELBA: unable to find Tx vring\n");
 723                 return;
 724         }
 725
 726         sta = &wil->sta[cid];
 727
 728         spin_lock_bh(&sta->tid_rx_lock);
 729
 730         r = sta->tid_rx[tid];
 731         sta->tid_rx[tid] = NULL;
 732         wil_tid_ampdu_rx_free(wil, r);
 733
 734         spin_unlock_bh(&sta->tid_rx_lock);
 735 }
 736
 737 /**
 738  * Some events are ignored for purpose; and need not be interpreted as
 739  * "unhandled events"
 740  */
 741 static void wmi_evt_ignore(struct wil6210_priv *wil, int id, void *d, int len)
 742 {
 743         wil_dbg_wmi(wil, "Ignore event 0x%04x len %d\n", id, len);
 744 }
 745
 746 static const struct {
 747         int eventid;
 748         void (*handler)(struct wil6210_priv *wil, int eventid,
 749                         void *data, int data_len);
 750 } wmi_evt_handlers[] = {
 751         {WMI_READY_EVENTID,             wmi_evt_ready},
 752         {WMI_FW_READY_EVENTID,                  wmi_evt_ignore},
 753         {WMI_RX_MGMT_PACKET_EVENTID,    wmi_evt_rx_mgmt},
 754         {WMI_TX_MGMT_PACKET_EVENTID,            wmi_evt_tx_mgmt},
 755         {WMI_SCAN_COMPLETE_EVENTID,     wmi_evt_scan_complete},
 756         {WMI_CONNECT_EVENTID,           wmi_evt_connect},
 757         {WMI_DISCONNECT_EVENTID,        wmi_evt_disconnect},
 758         {WMI_EAPOL_RX_EVENTID,          wmi_evt_eapol_rx},
 759         {WMI_BA_STATUS_EVENTID,         wmi_evt_ba_status},
 760         {WMI_RCP_ADDBA_REQ_EVENTID,     wmi_evt_addba_rx_req},
 761         {WMI_DELBA_EVENTID,             wmi_evt_delba},
 762         {WMI_VRING_EN_EVENTID,          wmi_evt_vring_en},
 763         {WMI_DATA_PORT_OPEN_EVENTID,            wmi_evt_ignore},
 764 };
 765
 766 /*
 767  * Run in IRQ context
 768  * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
 769  * that will be eventually handled by the @wmi_event_worker in the thread
 770  * context of thread "wil6210_wmi"
 771  */
 772 void wmi_recv_cmd(struct wil6210_priv *wil)
 773 {
 774         struct wil6210_mbox_ring_desc d_tail;
 775         struct wil6210_mbox_hdr hdr;
 776         struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
 777         struct pending_wmi_event *evt;
 778         u8 *cmd;
 779         void __iomem *src;
 780         ulong flags;
 781         unsigned n;
 782         unsigned int num_immed_reply = 0;
 783
 784         if (!test_bit(wil_status_mbox_ready, wil->status)) {
 785                 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 786                 return;
 787         }
 788
 789         for (n = 0;; n++) {
 790                 u16 len;
 791                 bool q;
 792                 bool immed_reply = false;
 793
 794                 r->head = wil_r(wil, RGF_MBOX +
 795                                 offsetof(struct wil6210_mbox_ctl, rx.head));
 796                 if (r->tail == r->head)
 797                         break;
 798
 799                 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
 800                             r->head, r->tail);
 801                 /* read cmd descriptor from tail */
 802                 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
 803                                      sizeof(struct wil6210_mbox_ring_desc));
 804                 if (d_tail.sync == 0) {
 805                         wil_err(wil, "Mbox evt not owned by FW?\n");
 806                         break;
 807                 }
 808
 809                 /* read cmd header from descriptor */
 810                 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
 811                         wil_err(wil, "Mbox evt at 0x%08x?\n",
 812                                 le32_to_cpu(d_tail.addr));
 813                         break;
 814                 }
 815                 len = le16_to_cpu(hdr.len);
 816                 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
 817                             le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
 818                             hdr.flags);
 819
 820                 /* read cmd buffer from descriptor */
 821                 src = wmi_buffer(wil, d_tail.addr) +
 822                       sizeof(struct wil6210_mbox_hdr);
 823                 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
 824                                              event.wmi) + len, 4),
 825                               GFP_KERNEL);
 826                 if (!evt)
 827                         break;
 828
 829                 evt->event.hdr = hdr;
 830                 cmd = (void *)&evt->event.wmi;
 831                 wil_memcpy_fromio_32(cmd, src, len);
 832                 /* mark entry as empty */
 833                 wil_w(wil, r->tail +
 834                       offsetof(struct wil6210_mbox_ring_desc, sync), 0);
 835                 /* indicate */
 836                 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
 837                     (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
 838                         struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi;
 839                         u16 id = le16_to_cpu(wmi->id);
 840                         u32 tstamp = le32_to_cpu(wmi->timestamp);
 841                         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 842                         if (wil->reply_id && wil->reply_id == id) {
 843                                 if (wil->reply_buf) {
 844                                         memcpy(wil->reply_buf, wmi,
 845                                                min(len, wil->reply_size));
 846                                         immed_reply = true;
 847                                 }
 848                         }
 849                         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 850
 851                         wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 852                                     id, wmi->mid, tstamp);
 853                         trace_wil6210_wmi_event(wmi, &wmi[1],
 854                                                 len - sizeof(*wmi));
 855                 }
 856                 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
 857                                  &evt->event.hdr, sizeof(hdr) + len, true);
 858
 859                 /* advance tail */
 860                 r->tail = r->base + ((r->tail - r->base +
 861                           sizeof(struct wil6210_mbox_ring_desc)) % r->size);
 862                 wil_w(wil, RGF_MBOX +
 863                       offsetof(struct wil6210_mbox_ctl, rx.tail), r->tail);
 864
 865                 if (immed_reply) {
 866                         wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
 867                                     __func__, wil->reply_id);
 868                         kfree(evt);
 869                         num_immed_reply++;
 870                         complete(&wil->wmi_call);
 871                 } else {
 872                         /* add to the pending list */
 873                         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 874                         list_add_tail(&evt->list, &wil->pending_wmi_ev);
 875                         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 876                         q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
 877                         wil_dbg_wmi(wil, "queue_work -> %d\n", q);
 878                 }
 879         }
 880         /* normally, 1 event per IRQ should be processed */
 881         wil_dbg_wmi(wil, "%s -> %d events queued, %d completed\n", __func__,
 882                     n - num_immed_reply, num_immed_reply);
 883 }
 884
 885 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 886              u16 reply_id, void *reply, u8 reply_size, int to_msec)
 887 {
 888         int rc;
 889         unsigned long remain;
 890
 891         mutex_lock(&wil->wmi_mutex);
 892
 893         spin_lock(&wil->wmi_ev_lock);
 894         wil->reply_id = reply_id;
 895         wil->reply_buf = reply;
 896         wil->reply_size = reply_size;
 897         spin_unlock(&wil->wmi_ev_lock);
 898
 899         rc = __wmi_send(wil, cmdid, buf, len);
 900         if (rc)
 901                 goto out;
 902
 903         remain = wait_for_completion_timeout(&wil->wmi_call,
 904                                              msecs_to_jiffies(to_msec));
 905         if (0 == remain) {
 906                 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 907                         cmdid, reply_id, to_msec);
 908                 rc = -ETIME;
 909         } else {
 910                 wil_dbg_wmi(wil,
 911                             "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
 912                             cmdid, reply_id,
 913                             to_msec - jiffies_to_msecs(remain));
 914         }
 915
 916 out:
 917         spin_lock(&wil->wmi_ev_lock);
 918         wil->reply_id = 0;
 919         wil->reply_buf = NULL;
 920         wil->reply_size = 0;
 921         spin_unlock(&wil->wmi_ev_lock);
 922
 923         mutex_unlock(&wil->wmi_mutex);
 924
 925         return rc;
 926 }
 927
 928 int wmi_echo(struct wil6210_priv *wil)
 929 {
 930         struct wmi_echo_cmd cmd = {
 931                 .value = cpu_to_le32(0x12345678),
 932         };
 933
 934         return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
 935                         WMI_ECHO_RSP_EVENTID, NULL, 0, 50);
 936 }
 937
 938 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
 939 {
 940         struct wmi_set_mac_address_cmd cmd;
 941
 942         ether_addr_copy(cmd.mac, addr);
 943
 944         wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
 945
 946         return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
 947 }
 948
 949 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype,
 950                   u8 chan, u8 hidden_ssid)
 951 {
 952         int rc;
 953
 954         struct wmi_pcp_start_cmd cmd = {
 955                 .bcon_interval = cpu_to_le16(bi),
 956                 .network_type = wmi_nettype,
 957                 .disable_sec_offload = 1,
 958                 .channel = chan - 1,
 959                 .pcp_max_assoc_sta = max_assoc_sta,
 960                 .hidden_ssid = hidden_ssid,
 961         };
 962         struct {
 963                 struct wil6210_mbox_hdr_wmi wmi;
 964                 struct wmi_pcp_started_event evt;
 965         } __packed reply;
 966
 967         if (!wil->privacy)
 968                 cmd.disable_sec = 1;
 969
 970         if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
 971             (cmd.pcp_max_assoc_sta <= 0)) {
 972                 wil_info(wil,
 973                          "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
 974                          max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
 975                 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
 976         }
 977
 978         /*
 979          * Processing time may be huge, in case of secure AP it takes about
 980          * 3500ms for FW to start AP
 981          */
 982         rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
 983                       WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
 984         if (rc)
 985                 return rc;
 986
 987         if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
 988                 rc = -EINVAL;
 989
 990         return rc;
 991 }
 992
 993 int wmi_pcp_stop(struct wil6210_priv *wil)
 994 {
 995         return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
 996                         WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
 997 }
 998
 999 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
1000 {
1001         struct wmi_set_ssid_cmd cmd = {
1002                 .ssid_len = cpu_to_le32(ssid_len),
1003         };
1004
1005         if (ssid_len > sizeof(cmd.ssid))
1006                 return -EINVAL;
1007
1008         memcpy(cmd.ssid, ssid, ssid_len);
1009
1010         return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
1011 }
1012
1013 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
1014 {
1015         int rc;
1016         struct {
1017                 struct wil6210_mbox_hdr_wmi wmi;
1018                 struct wmi_set_ssid_cmd cmd;
1019         } __packed reply;
1020         int len; /* reply.cmd.ssid_len in CPU order */
1021
1022         rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
1023                       &reply, sizeof(reply), 20);
1024         if (rc)
1025                 return rc;
1026
1027         len = le32_to_cpu(reply.cmd.ssid_len);
1028         if (len > sizeof(reply.cmd.ssid))
1029                 return -EINVAL;
1030
1031         *ssid_len = len;
1032         memcpy(ssid, reply.cmd.ssid, len);
1033
1034         return 0;
1035 }
1036
1037 int wmi_set_channel(struct wil6210_priv *wil, int channel)
1038 {
1039         struct wmi_set_pcp_channel_cmd cmd = {
1040                 .channel = channel - 1,
1041         };
1042
1043         return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
1044 }
1045
1046 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
1047 {
1048         int rc;
1049         struct {
1050                 struct wil6210_mbox_hdr_wmi wmi;
1051                 struct wmi_set_pcp_channel_cmd cmd;
1052         } __packed reply;
1053
1054         rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
1055                       WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
1056         if (rc)
1057                 return rc;
1058
1059         if (reply.cmd.channel > 3)
1060                 return -EINVAL;
1061
1062         *channel = reply.cmd.channel + 1;
1063
1064         return 0;
1065 }
1066
1067 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel)
1068 {
1069         struct wmi_p2p_cfg_cmd cmd = {
1070                 .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD,
1071                 .channel = channel - 1,
1072         };
1073
1074         return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd));
1075 }
1076
1077 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
1078                        const void *mac_addr, int key_usage)
1079 {
1080         struct wmi_delete_cipher_key_cmd cmd = {
1081                 .key_index = key_index,
1082         };
1083
1084         if (mac_addr)
1085                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1086
1087         return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1088 }
1089
1090 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
1091                        const void *mac_addr, int key_len, const void *key,
1092                        int key_usage)
1093 {
1094         struct wmi_add_cipher_key_cmd cmd = {
1095                 .key_index = key_index,
1096                 .key_usage = key_usage,
1097                 .key_len = key_len,
1098         };
1099
1100         if (!key || (key_len > sizeof(cmd.key)))
1101                 return -EINVAL;
1102
1103         memcpy(cmd.key, key, key_len);
1104         if (mac_addr)
1105                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1106
1107         return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1108 }
1109
1110 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
1111 {
1112         static const char *const names[] = {
1113                 [WMI_FRAME_BEACON]      = "BEACON",
1114                 [WMI_FRAME_PROBE_REQ]   = "PROBE_REQ",
1115                 [WMI_FRAME_PROBE_RESP]  = "WMI_FRAME_PROBE_RESP",
1116                 [WMI_FRAME_ASSOC_REQ]   = "WMI_FRAME_ASSOC_REQ",
1117                 [WMI_FRAME_ASSOC_RESP]  = "WMI_FRAME_ASSOC_RESP",
1118         };
1119         int rc;
1120         u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
1121         struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
1122
1123         if (!cmd) {
1124                 rc = -ENOMEM;
1125                 goto out;
1126         }
1127         if (!ie)
1128                 ie_len = 0;
1129
1130         cmd->mgmt_frm_type = type;
1131         /* BUG: FW API define ieLen as u8. Will fix FW */
1132         cmd->ie_len = cpu_to_le16(ie_len);
1133         memcpy(cmd->ie_info, ie, ie_len);
1134         rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
1135         kfree(cmd);
1136 out:
1137         if (rc) {
1138                 const char *name = type < ARRAY_SIZE(names) ?
1139                                    names[type] : "??";
1140                 wil_err(wil, "set_ie(%d %s) failed : %d\n", type, name, rc);
1141         }
1142
1143         return rc;
1144 }
1145
1146 /**
1147  * wmi_rxon - turn radio on/off
1148  * @on:         turn on if true, off otherwise
1149  *
1150  * Only switch radio. Channel should be set separately.
1151  * No timeout for rxon - radio turned on forever unless some other call
1152  * turns it off
1153  */
1154 int wmi_rxon(struct wil6210_priv *wil, bool on)
1155 {
1156         int rc;
1157         struct {
1158                 struct wil6210_mbox_hdr_wmi wmi;
1159                 struct wmi_listen_started_event evt;
1160         } __packed reply;
1161
1162         wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1163
1164         if (on) {
1165                 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1166                               WMI_LISTEN_STARTED_EVENTID,
1167                               &reply, sizeof(reply), 100);
1168                 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1169                         rc = -EINVAL;
1170         } else {
1171                 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1172                               WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1173         }
1174
1175         return rc;
1176 }
1177
1178 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1179 {
1180         struct wireless_dev *wdev = wil->wdev;
1181         struct net_device *ndev = wil_to_ndev(wil);
1182         struct wmi_cfg_rx_chain_cmd cmd = {
1183                 .action = WMI_RX_CHAIN_ADD,
1184                 .rx_sw_ring = {
1185                         .max_mpdu_size = cpu_to_le16(wil_mtu2macbuf(mtu_max)),
1186                         .ring_mem_base = cpu_to_le64(vring->pa),
1187                         .ring_size = cpu_to_le16(vring->size),
1188                 },
1189                 .mid = 0, /* TODO - what is it? */
1190                 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1191                 .reorder_type = WMI_RX_SW_REORDER,
1192                 .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh),
1193         };
1194         struct {
1195                 struct wil6210_mbox_hdr_wmi wmi;
1196                 struct wmi_cfg_rx_chain_done_event evt;
1197         } __packed evt;
1198         int rc;
1199
1200         if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1201                 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1202
1203                 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1204                 if (ch)
1205                         cmd.sniffer_cfg.channel = ch->hw_value - 1;
1206                 cmd.sniffer_cfg.phy_info_mode =
1207                         cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1208                 cmd.sniffer_cfg.phy_support =
1209                         cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1210                                     ? WMI_SNIFFER_CP : WMI_SNIFFER_BOTH_PHYS);
1211         } else {
1212                 /* Initialize offload (in non-sniffer mode).
1213                  * Linux IP stack always calculates IP checksum
1214                  * HW always calculate TCP/UDP checksum
1215                  */
1216                 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1217         }
1218
1219         if (rx_align_2)
1220                 cmd.l2_802_3_offload_ctrl |=
1221                                 L2_802_3_OFFLOAD_CTRL_SNAP_KEEP_MSK;
1222
1223         /* typical time for secure PCP is 840ms */
1224         rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1225                       WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1226         if (rc)
1227                 return rc;
1228
1229         vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1230
1231         wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1232                      le32_to_cpu(evt.evt.status), vring->hwtail);
1233
1234         if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1235                 rc = -EINVAL;
1236
1237         return rc;
1238 }
1239
1240 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf)
1241 {
1242         int rc;
1243         struct wmi_temp_sense_cmd cmd = {
1244                 .measure_baseband_en = cpu_to_le32(!!t_bb),
1245                 .measure_rf_en = cpu_to_le32(!!t_rf),
1246                 .measure_mode = cpu_to_le32(TEMPERATURE_MEASURE_NOW),
1247         };
1248         struct {
1249                 struct wil6210_mbox_hdr_wmi wmi;
1250                 struct wmi_temp_sense_done_event evt;
1251         } __packed reply;
1252
1253         rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1254                       WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1255         if (rc)
1256                 return rc;
1257
1258         if (t_bb)
1259                 *t_bb = le32_to_cpu(reply.evt.baseband_t1000);
1260         if (t_rf)
1261                 *t_rf = le32_to_cpu(reply.evt.rf_t1000);
1262
1263         return 0;
1264 }
1265
1266 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason,
1267                        bool full_disconnect)
1268 {
1269         int rc;
1270         u16 reason_code;
1271         struct wmi_disconnect_sta_cmd cmd = {
1272                 .disconnect_reason = cpu_to_le16(reason),
1273         };
1274         struct {
1275                 struct wil6210_mbox_hdr_wmi wmi;
1276                 struct wmi_disconnect_event evt;
1277         } __packed reply;
1278
1279         ether_addr_copy(cmd.dst_mac, mac);
1280
1281         wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1282
1283         rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd),
1284                       WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 1000);
1285         /* failure to disconnect in reasonable time treated as FW error */
1286         if (rc) {
1287                 wil_fw_error_recovery(wil);
1288                 return rc;
1289         }
1290
1291         if (full_disconnect) {
1292                 /* call event handler manually after processing wmi_call,
1293                  * to avoid deadlock - disconnect event handler acquires
1294                  * wil->mutex while it is already held here
1295                  */
1296                 reason_code = le16_to_cpu(reply.evt.protocol_reason_status);
1297
1298                 wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
1299                             reply.evt.bssid, reason_code,
1300                             reply.evt.disconnect_reason);
1301
1302                 wil->sinfo_gen++;
1303                 wil6210_disconnect(wil, reply.evt.bssid, reason_code, true);
1304         }
1305         return 0;
1306 }
1307
1308 int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout)
1309 {
1310         struct wmi_vring_ba_en_cmd cmd = {
1311                 .ringid = ringid,
1312                 .agg_max_wsize = size,
1313                 .ba_timeout = cpu_to_le16(timeout),
1314                 .amsdu = 0,
1315         };
1316
1317         wil_dbg_wmi(wil, "%s(ring %d size %d timeout %d)\n", __func__,
1318                     ringid, size, timeout);
1319
1320         return wmi_send(wil, WMI_VRING_BA_EN_CMDID, &cmd, sizeof(cmd));
1321 }
1322
1323 int wmi_delba_tx(struct wil6210_priv *wil, u8 ringid, u16 reason)
1324 {
1325         struct wmi_vring_ba_dis_cmd cmd = {
1326                 .ringid = ringid,
1327                 .reason = cpu_to_le16(reason),
1328         };
1329
1330         wil_dbg_wmi(wil, "%s(ring %d reason %d)\n", __func__,
1331                     ringid, reason);
1332
1333         return wmi_send(wil, WMI_VRING_BA_DIS_CMDID, &cmd, sizeof(cmd));
1334 }
1335
1336 int wmi_delba_rx(struct wil6210_priv *wil, u8 cidxtid, u16 reason)
1337 {
1338         struct wmi_rcp_delba_cmd cmd = {
1339                 .cidxtid = cidxtid,
1340                 .reason = cpu_to_le16(reason),
1341         };
1342
1343         wil_dbg_wmi(wil, "%s(CID %d TID %d reason %d)\n", __func__,
1344                     cidxtid & 0xf, (cidxtid >> 4) & 0xf, reason);
1345
1346         return wmi_send(wil, WMI_RCP_DELBA_CMDID, &cmd, sizeof(cmd));
1347 }
1348
1349 int wmi_addba_rx_resp(struct wil6210_priv *wil, u8 cid, u8 tid, u8 token,
1350                       u16 status, bool amsdu, u16 agg_wsize, u16 timeout)
1351 {
1352         int rc;
1353         struct wmi_rcp_addba_resp_cmd cmd = {
1354                 .cidxtid = mk_cidxtid(cid, tid),
1355                 .dialog_token = token,
1356                 .status_code = cpu_to_le16(status),
1357                 /* bit 0: A-MSDU supported
1358                  * bit 1: policy (should be 0 for us)
1359                  * bits 2..5: TID
1360                  * bits 6..15: buffer size
1361                  */
1362                 .ba_param_set = cpu_to_le16((amsdu ? 1 : 0) | (tid << 2) |
1363                                             (agg_wsize << 6)),
1364                 .ba_timeout = cpu_to_le16(timeout),
1365         };
1366         struct {
1367                 struct wil6210_mbox_hdr_wmi wmi;
1368                 struct wmi_rcp_addba_resp_sent_event evt;
1369         } __packed reply;
1370
1371         wil_dbg_wmi(wil,
1372                     "ADDBA response for CID %d TID %d size %d timeout %d status %d AMSDU%s\n",
1373                     cid, tid, agg_wsize, timeout, status, amsdu ? "+" : "-");
1374
1375         rc = wmi_call(wil, WMI_RCP_ADDBA_RESP_CMDID, &cmd, sizeof(cmd),
1376                       WMI_RCP_ADDBA_RESP_SENT_EVENTID, &reply, sizeof(reply),
1377                       100);
1378         if (rc)
1379                 return rc;
1380
1381         if (reply.evt.status) {
1382                 wil_err(wil, "ADDBA response failed with status %d\n",
1383                         le16_to_cpu(reply.evt.status));
1384                 rc = -EINVAL;
1385         }
1386
1387         return rc;
1388 }
1389
1390 void wmi_event_flush(struct wil6210_priv *wil)
1391 {
1392         struct pending_wmi_event *evt, *t;
1393
1394         wil_dbg_wmi(wil, "%s()\n", __func__);
1395
1396         list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1397                 list_del(&evt->list);
1398                 kfree(evt);
1399         }
1400 }
1401
1402 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1403                                  void *d, int len)
1404 {
1405         uint i;
1406
1407         for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1408                 if (wmi_evt_handlers[i].eventid == id) {
1409                         wmi_evt_handlers[i].handler(wil, id, d, len);
1410                         return true;
1411                 }
1412         }
1413
1414         return false;
1415 }
1416
1417 static void wmi_event_handle(struct wil6210_priv *wil,
1418                              struct wil6210_mbox_hdr *hdr)
1419 {
1420         u16 len = le16_to_cpu(hdr->len);
1421
1422         if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1423             (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
1424                 struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]);
1425                 void *evt_data = (void *)(&wmi[1]);
1426                 u16 id = le16_to_cpu(wmi->id);
1427
1428                 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1429                             id, wil->reply_id);
1430                 /* check if someone waits for this event */
1431                 if (wil->reply_id && wil->reply_id == id) {
1432                         WARN_ON(wil->reply_buf);
1433                         wmi_evt_call_handler(wil, id, evt_data,
1434                                              len - sizeof(*wmi));
1435                         wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
1436                                     __func__, id);
1437                         complete(&wil->wmi_call);
1438                         return;
1439                 }
1440                 /* unsolicited event */
1441                 /* search for handler */
1442                 if (!wmi_evt_call_handler(wil, id, evt_data,
1443                                           len - sizeof(*wmi))) {
1444                         wil_info(wil, "Unhandled event 0x%04x\n", id);
1445                 }
1446         } else {
1447                 wil_err(wil, "Unknown event type\n");
1448                 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1449                                hdr, sizeof(*hdr) + len, true);
1450         }
1451 }
1452
1453 /*
1454  * Retrieve next WMI event from the pending list
1455  */
1456 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1457 {
1458         ulong flags;
1459         struct list_head *ret = NULL;
1460
1461         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1462
1463         if (!list_empty(&wil->pending_wmi_ev)) {
1464                 ret = wil->pending_wmi_ev.next;
1465                 list_del(ret);
1466         }
1467
1468         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1469
1470         return ret;
1471 }
1472
1473 /*
1474  * Handler for the WMI events
1475  */
1476 void wmi_event_worker(struct work_struct *work)
1477 {
1478         struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1479                                                  wmi_event_worker);
1480         struct pending_wmi_event *evt;
1481         struct list_head *lh;
1482
1483         wil_dbg_wmi(wil, "Start %s\n", __func__);
1484         while ((lh = next_wmi_ev(wil)) != NULL) {
1485                 evt = list_entry(lh, struct pending_wmi_event, list);
1486                 wmi_event_handle(wil, &evt->event.hdr);
1487                 kfree(evt);
1488         }
1489         wil_dbg_wmi(wil, "Finished %s\n", __func__);
1490 }