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 u8 led_id = WIL_LED_INVALID_ID;
  36 module_param(led_id, byte, S_IRUGO);
  37 MODULE_PARM_DESC(led_id,
  38                  " 60G device led enablement. Set the led ID (0-2) to enable");
  39
  40 /**
  41  * WMI event receiving - theory of operations
  42  *
  43  * When firmware about to report WMI event, it fills memory area
  44  * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for
  45  * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler.
  46  *
  47  * @wmi_recv_cmd reads event, allocates memory chunk  and attaches it to the
  48  * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up
  49  * and handles events within the @wmi_event_worker. Every event get detached
  50  * from list, processed and deleted.
  51  *
  52  * Purpose for this mechanism is to release IRQ thread; otherwise,
  53  * if WMI event handling involves another WMI command flow, this 2-nd flow
  54  * won't be completed because of blocked IRQ thread.
  55  */
  56
  57 /**
  58  * Addressing - theory of operations
  59  *
  60  * There are several buses present on the WIL6210 card.
  61  * Same memory areas are visible at different address on
  62  * the different busses. There are 3 main bus masters:
  63  *  - MAC CPU (ucode)
  64  *  - User CPU (firmware)
  65  *  - AHB (host)
  66  *
  67  * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing
  68  * AHB addresses starting from 0x880000
  69  *
  70  * Internally, firmware uses addresses that allows faster access but
  71  * are invisible from the host. To read from these addresses, alternative
  72  * AHB address must be used.
  73  *
  74  * Memory mapping
  75  * Linker address         PCI/Host address
  76  *                        0x880000 .. 0xa80000  2Mb BAR0
  77  * 0x800000 .. 0x807000   0x900000 .. 0x907000  28k DCCM
  78  * 0x840000 .. 0x857000   0x908000 .. 0x91f000  92k PERIPH
  79  */
  80
  81 /**
  82  * @fw_mapping provides memory remapping table
  83  *
  84  * array size should be in sync with the declaration in the wil6210.h
  85  */
  86 const struct fw_map fw_mapping[] = {
  87         {0x000000, 0x040000, 0x8c0000, "fw_code"}, /* FW code RAM      256k */
  88         {0x800000, 0x808000, 0x900000, "fw_data"}, /* FW data RAM       32k */
  89         {0x840000, 0x860000, 0x908000, "fw_peri"}, /* periph. data RAM 128k */
  90         {0x880000, 0x88a000, 0x880000, "rgf"},     /* various RGF       40k */
  91         {0x88a000, 0x88b000, 0x88a000, "AGC_tbl"}, /* AGC table          4k */
  92         {0x88b000, 0x88c000, 0x88b000, "rgf_ext"}, /* Pcie_ext_rgf       4k */
  93         {0x88c000, 0x88c200, 0x88c000, "mac_rgf_ext"}, /* mac_ext_rgf  512b */
  94         {0x8c0000, 0x949000, 0x8c0000, "upper"},   /* upper area       548k */
  95         /*
  96          * 920000..930000 ucode code RAM
  97          * 930000..932000 ucode data RAM
  98          * 932000..949000 back-door debug data
  99          */
 100 };
 101
 102 struct blink_on_off_time led_blink_time[] = {
 103         {WIL_LED_BLINK_ON_SLOW_MS, WIL_LED_BLINK_OFF_SLOW_MS},
 104         {WIL_LED_BLINK_ON_MED_MS, WIL_LED_BLINK_OFF_MED_MS},
 105         {WIL_LED_BLINK_ON_FAST_MS, WIL_LED_BLINK_OFF_FAST_MS},
 106 };
 107
 108 u8 led_polarity = LED_POLARITY_LOW_ACTIVE;
 109
 110 /**
 111  * return AHB address for given firmware/ucode internal (linker) address
 112  * @x - internal address
 113  * If address have no valid AHB mapping, return 0
 114  */
 115 static u32 wmi_addr_remap(u32 x)
 116 {
 117         uint i;
 118
 119         for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) {
 120                 if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to))
 121                         return x + fw_mapping[i].host - fw_mapping[i].from;
 122         }
 123
 124         return 0;
 125 }
 126
 127 /**
 128  * Check address validity for WMI buffer; remap if needed
 129  * @ptr - internal (linker) fw/ucode address
 130  *
 131  * Valid buffer should be DWORD aligned
 132  *
 133  * return address for accessing buffer from the host;
 134  * if buffer is not valid, return NULL.
 135  */
 136 void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_)
 137 {
 138         u32 off;
 139         u32 ptr = le32_to_cpu(ptr_);
 140
 141         if (ptr % 4)
 142                 return NULL;
 143
 144         ptr = wmi_addr_remap(ptr);
 145         if (ptr < WIL6210_FW_HOST_OFF)
 146                 return NULL;
 147
 148         off = HOSTADDR(ptr);
 149         if (off > WIL6210_MEM_SIZE - 4)
 150                 return NULL;
 151
 152         return wil->csr + off;
 153 }
 154
 155 /**
 156  * Check address validity
 157  */
 158 void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr)
 159 {
 160         u32 off;
 161
 162         if (ptr % 4)
 163                 return NULL;
 164
 165         if (ptr < WIL6210_FW_HOST_OFF)
 166                 return NULL;
 167
 168         off = HOSTADDR(ptr);
 169         if (off > WIL6210_MEM_SIZE - 4)
 170                 return NULL;
 171
 172         return wil->csr + off;
 173 }
 174
 175 int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr,
 176                  struct wil6210_mbox_hdr *hdr)
 177 {
 178         void __iomem *src = wmi_buffer(wil, ptr);
 179
 180         if (!src)
 181                 return -EINVAL;
 182
 183         wil_memcpy_fromio_32(hdr, src, sizeof(*hdr));
 184
 185         return 0;
 186 }
 187
 188 static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
 189 {
 190         struct {
 191                 struct wil6210_mbox_hdr hdr;
 192                 struct wmi_cmd_hdr wmi;
 193         } __packed cmd = {
 194                 .hdr = {
 195                         .type = WIL_MBOX_HDR_TYPE_WMI,
 196                         .flags = 0,
 197                         .len = cpu_to_le16(sizeof(cmd.wmi) + len),
 198                 },
 199                 .wmi = {
 200                         .mid = 0,
 201                         .command_id = cpu_to_le16(cmdid),
 202                 },
 203         };
 204         struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx;
 205         struct wil6210_mbox_ring_desc d_head;
 206         u32 next_head;
 207         void __iomem *dst;
 208         void __iomem *head = wmi_addr(wil, r->head);
 209         uint retry;
 210         int rc = 0;
 211
 212         if (len > r->entry_size - sizeof(cmd)) {
 213                 wil_err(wil, "WMI size too large: %d bytes, max is %d\n",
 214                         (int)(sizeof(cmd) + len), r->entry_size);
 215                 return -ERANGE;
 216         }
 217
 218         might_sleep();
 219
 220         if (!test_bit(wil_status_fwready, wil->status)) {
 221                 wil_err(wil, "WMI: cannot send command while FW not ready\n");
 222                 return -EAGAIN;
 223         }
 224
 225         if (!head) {
 226                 wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head);
 227                 return -EINVAL;
 228         }
 229
 230         wil_halp_vote(wil);
 231
 232         /* read Tx head till it is not busy */
 233         for (retry = 5; retry > 0; retry--) {
 234                 wil_memcpy_fromio_32(&d_head, head, sizeof(d_head));
 235                 if (d_head.sync == 0)
 236                         break;
 237                 msleep(20);
 238         }
 239         if (d_head.sync != 0) {
 240                 wil_err(wil, "WMI head busy\n");
 241                 rc = -EBUSY;
 242                 goto out;
 243         }
 244         /* next head */
 245         next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size);
 246         wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head);
 247         /* wait till FW finish with previous command */
 248         for (retry = 5; retry > 0; retry--) {
 249                 if (!test_bit(wil_status_fwready, wil->status)) {
 250                         wil_err(wil, "WMI: cannot send command while FW not ready\n");
 251                         rc = -EAGAIN;
 252                         goto out;
 253                 }
 254                 r->tail = wil_r(wil, RGF_MBOX +
 255                                 offsetof(struct wil6210_mbox_ctl, tx.tail));
 256                 if (next_head != r->tail)
 257                         break;
 258                 msleep(20);
 259         }
 260         if (next_head == r->tail) {
 261                 wil_err(wil, "WMI ring full\n");
 262                 rc = -EBUSY;
 263                 goto out;
 264         }
 265         dst = wmi_buffer(wil, d_head.addr);
 266         if (!dst) {
 267                 wil_err(wil, "invalid WMI buffer: 0x%08x\n",
 268                         le32_to_cpu(d_head.addr));
 269                 rc = -EAGAIN;
 270                 goto out;
 271         }
 272         cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq);
 273         /* set command */
 274         wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len);
 275         wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd,
 276                          sizeof(cmd), true);
 277         wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf,
 278                          len, true);
 279         wil_memcpy_toio_32(dst, &cmd, sizeof(cmd));
 280         wil_memcpy_toio_32(dst + sizeof(cmd), buf, len);
 281         /* mark entry as full */
 282         wil_w(wil, r->head + offsetof(struct wil6210_mbox_ring_desc, sync), 1);
 283         /* advance next ptr */
 284         wil_w(wil, RGF_MBOX + offsetof(struct wil6210_mbox_ctl, tx.head),
 285               r->head = next_head);
 286
 287         trace_wil6210_wmi_cmd(&cmd.wmi, buf, len);
 288
 289         /* interrupt to FW */
 290         wil_w(wil, RGF_USER_USER_ICR + offsetof(struct RGF_ICR, ICS),
 291               SW_INT_MBOX);
 292
 293 out:
 294         wil_halp_unvote(wil);
 295         return rc;
 296 }
 297
 298 int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len)
 299 {
 300         int rc;
 301
 302         mutex_lock(&wil->wmi_mutex);
 303         rc = __wmi_send(wil, cmdid, buf, len);
 304         mutex_unlock(&wil->wmi_mutex);
 305
 306         return rc;
 307 }
 308
 309 /*=== Event handlers ===*/
 310 static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len)
 311 {
 312         struct wireless_dev *wdev = wil->wdev;
 313         struct wmi_ready_event *evt = d;
 314
 315         wil->n_mids = evt->numof_additional_mids;
 316
 317         wil_info(wil, "FW ver. %s(SW %d); MAC %pM; %d MID's\n",
 318                  wil->fw_version, le32_to_cpu(evt->sw_version),
 319                  evt->mac, wil->n_mids);
 320         /* ignore MAC address, we already have it from the boot loader */
 321         strlcpy(wdev->wiphy->fw_version, wil->fw_version,
 322                 sizeof(wdev->wiphy->fw_version));
 323
 324         wil_set_recovery_state(wil, fw_recovery_idle);
 325         set_bit(wil_status_fwready, wil->status);
 326         /* let the reset sequence continue */
 327         complete(&wil->wmi_ready);
 328 }
 329
 330 static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 331 {
 332         struct wmi_rx_mgmt_packet_event *data = d;
 333         struct wiphy *wiphy = wil_to_wiphy(wil);
 334         struct ieee80211_mgmt *rx_mgmt_frame =
 335                         (struct ieee80211_mgmt *)data->payload;
 336         int flen = len - offsetof(struct wmi_rx_mgmt_packet_event, payload);
 337         int ch_no;
 338         u32 freq;
 339         struct ieee80211_channel *channel;
 340         s32 signal;
 341         __le16 fc;
 342         u32 d_len;
 343         u16 d_status;
 344
 345         if (flen < 0) {
 346                 wil_err(wil, "MGMT Rx: short event, len %d\n", len);
 347                 return;
 348         }
 349
 350         d_len = le32_to_cpu(data->info.len);
 351         if (d_len != flen) {
 352                 wil_err(wil,
 353                         "MGMT Rx: length mismatch, d_len %d should be %d\n",
 354                         d_len, flen);
 355                 return;
 356         }
 357
 358         ch_no = data->info.channel + 1;
 359         freq = ieee80211_channel_to_frequency(ch_no, NL80211_BAND_60GHZ);
 360         channel = ieee80211_get_channel(wiphy, freq);
 361         signal = data->info.sqi;
 362         d_status = le16_to_cpu(data->info.status);
 363         fc = rx_mgmt_frame->frame_control;
 364
 365         wil_dbg_wmi(wil, "MGMT Rx: channel %d MCS %d SNR %d SQI %d%%\n",
 366                     data->info.channel, data->info.mcs, data->info.snr,
 367                     data->info.sqi);
 368         wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len,
 369                     le16_to_cpu(fc));
 370         wil_dbg_wmi(wil, "qid %d mid %d cid %d\n",
 371                     data->info.qid, data->info.mid, data->info.cid);
 372         wil_hex_dump_wmi("MGMT Rx ", DUMP_PREFIX_OFFSET, 16, 1, rx_mgmt_frame,
 373                          d_len, true);
 374
 375         if (!channel) {
 376                 wil_err(wil, "Frame on unsupported channel\n");
 377                 return;
 378         }
 379
 380         if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) {
 381                 struct cfg80211_bss *bss;
 382                 u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp);
 383                 u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info);
 384                 u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int);
 385                 const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable;
 386                 size_t ie_len = d_len - offsetof(struct ieee80211_mgmt,
 387                                                  u.beacon.variable);
 388                 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
 389                 wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf);
 390                 wil_dbg_wmi(wil, "Beacon interval : %d\n", bi);
 391                 wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf,
 392                                  ie_len, true);
 393
 394                 wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap);
 395
 396                 bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame,
 397                                                 d_len, signal, GFP_KERNEL);
 398                 if (bss) {
 399                         wil_dbg_wmi(wil, "Added BSS %pM\n",
 400                                     rx_mgmt_frame->bssid);
 401                         cfg80211_put_bss(wiphy, bss);
 402                 } else {
 403                         wil_err(wil, "cfg80211_inform_bss_frame() failed\n");
 404                 }
 405         } else {
 406                 mutex_lock(&wil->p2p_wdev_mutex);
 407                 cfg80211_rx_mgmt(wil->radio_wdev, freq, signal,
 408                                  (void *)rx_mgmt_frame, d_len, 0);
 409                 mutex_unlock(&wil->p2p_wdev_mutex);
 410         }
 411 }
 412
 413 static void wmi_evt_tx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
 414 {
 415         struct wmi_tx_mgmt_packet_event *data = d;
 416         struct ieee80211_mgmt *mgmt_frame =
 417                         (struct ieee80211_mgmt *)data->payload;
 418         int flen = len - offsetof(struct wmi_tx_mgmt_packet_event, payload);
 419
 420         wil_hex_dump_wmi("MGMT Tx ", DUMP_PREFIX_OFFSET, 16, 1, mgmt_frame,
 421                          flen, true);
 422 }
 423
 424 static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id,
 425                                   void *d, int len)
 426 {
 427         mutex_lock(&wil->p2p_wdev_mutex);
 428         if (wil->scan_request) {
 429                 struct wmi_scan_complete_event *data = d;
 430                 struct cfg80211_scan_info info = {
 431                         .aborted = (data->status != WMI_SCAN_SUCCESS),
 432                 };
 433
 434                 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
 435                 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
 436                              wil->scan_request, info.aborted);
 437
 438                 del_timer_sync(&wil->scan_timer);
 439                 cfg80211_scan_done(wil->scan_request, &info);
 440                 wil->radio_wdev = wil->wdev;
 441                 wil->scan_request = NULL;
 442         } else {
 443                 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
 444         }
 445         mutex_unlock(&wil->p2p_wdev_mutex);
 446 }
 447
 448 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
 449 {
 450         struct net_device *ndev = wil_to_ndev(wil);
 451         struct wireless_dev *wdev = wil->wdev;
 452         struct wmi_connect_event *evt = d;
 453         int ch; /* channel number */
 454         struct station_info sinfo;
 455         u8 *assoc_req_ie, *assoc_resp_ie;
 456         size_t assoc_req_ielen, assoc_resp_ielen;
 457         /* capinfo(u16) + listen_interval(u16) + IEs */
 458         const size_t assoc_req_ie_offset = sizeof(u16) * 2;
 459         /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
 460         const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
 461         int rc;
 462
 463         if (len < sizeof(*evt)) {
 464                 wil_err(wil, "Connect event too short : %d bytes\n", len);
 465                 return;
 466         }
 467         if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
 468                    evt->assoc_resp_len) {
 469                 wil_err(wil,
 470                         "Connect event corrupted : %d != %d + %d + %d + %d\n",
 471                         len, (int)sizeof(*evt), evt->beacon_ie_len,
 472                         evt->assoc_req_len, evt->assoc_resp_len);
 473                 return;
 474         }
 475         if (evt->cid >= WIL6210_MAX_CID) {
 476                 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
 477                 return;
 478         }
 479
 480         ch = evt->channel + 1;
 481         wil_info(wil, "Connect %pM channel [%d] cid %d\n",
 482                  evt->bssid, ch, evt->cid);
 483         wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
 484                          evt->assoc_info, len - sizeof(*evt), true);
 485
 486         /* figure out IE's */
 487         assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
 488                                         assoc_req_ie_offset];
 489         assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
 490         if (evt->assoc_req_len <= assoc_req_ie_offset) {
 491                 assoc_req_ie = NULL;
 492                 assoc_req_ielen = 0;
 493         }
 494
 495         assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
 496                                          evt->assoc_req_len +
 497                                          assoc_resp_ie_offset];
 498         assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
 499         if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
 500                 assoc_resp_ie = NULL;
 501                 assoc_resp_ielen = 0;
 502         }
 503
 504         if (test_bit(wil_status_resetting, wil->status) ||
 505             !test_bit(wil_status_fwready, wil->status)) {
 506                 wil_err(wil, "status_resetting, cancel connect event, CID %d\n",
 507                         evt->cid);
 508                 /* no need for cleanup, wil_reset will do that */
 509                 return;
 510         }
 511
 512         mutex_lock(&wil->mutex);
 513
 514         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 515             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 516                 if (!test_bit(wil_status_fwconnecting, wil->status)) {
 517                         wil_err(wil, "Not in connecting state\n");
 518                         mutex_unlock(&wil->mutex);
 519                         return;
 520                 }
 521                 del_timer_sync(&wil->connect_timer);
 522         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 523                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 524                 if (wil->sta[evt->cid].status != wil_sta_unused) {
 525                         wil_err(wil, "%s: AP: Invalid status %d for CID %d\n",
 526                                 __func__, wil->sta[evt->cid].status, evt->cid);
 527                         mutex_unlock(&wil->mutex);
 528                         return;
 529                 }
 530         }
 531
 532         /* FIXME FW can transmit only ucast frames to peer */
 533         /* FIXME real ring_id instead of hard coded 0 */
 534         ether_addr_copy(wil->sta[evt->cid].addr, evt->bssid);
 535         wil->sta[evt->cid].status = wil_sta_conn_pending;
 536
 537         rc = wil_tx_init(wil, evt->cid);
 538         if (rc) {
 539                 wil_err(wil, "%s: config tx vring failed for CID %d, rc (%d)\n",
 540                         __func__, evt->cid, rc);
 541                 wmi_disconnect_sta(wil, wil->sta[evt->cid].addr,
 542                                    WLAN_REASON_UNSPECIFIED, false);
 543         } else {
 544                 wil_info(wil, "%s: successful connection to CID %d\n",
 545                          __func__, evt->cid);
 546         }
 547
 548         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 549             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 550                 if (rc) {
 551                         netif_tx_stop_all_queues(ndev);
 552                         netif_carrier_off(ndev);
 553                         wil_err(wil,
 554                                 "%s: cfg80211_connect_result with failure\n",
 555                                 __func__);
 556                         cfg80211_connect_result(ndev, evt->bssid, NULL, 0,
 557                                                 NULL, 0,
 558                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
 559                                                 GFP_KERNEL);
 560                         goto out;
 561                 } else {
 562                         cfg80211_connect_result(ndev, evt->bssid,
 563                                                 assoc_req_ie, assoc_req_ielen,
 564                                                 assoc_resp_ie, assoc_resp_ielen,
 565                                                 WLAN_STATUS_SUCCESS,
 566                                                 GFP_KERNEL);
 567                 }
 568         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 569                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 570                 if (rc)
 571                         goto out;
 572
 573                 memset(&sinfo, 0, sizeof(sinfo));
 574
 575                 sinfo.generation = wil->sinfo_gen++;
 576
 577                 if (assoc_req_ie) {
 578                         sinfo.assoc_req_ies = assoc_req_ie;
 579                         sinfo.assoc_req_ies_len = assoc_req_ielen;
 580                 }
 581
 582                 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
 583         } else {
 584                 wil_err(wil, "%s: unhandled iftype %d for CID %d\n",
 585                         __func__, wdev->iftype, evt->cid);
 586                 goto out;
 587         }
 588
 589         wil->sta[evt->cid].status = wil_sta_connected;
 590         set_bit(wil_status_fwconnected, wil->status);
 591         netif_tx_wake_all_queues(ndev);
 592
 593 out:
 594         if (rc)
 595                 wil->sta[evt->cid].status = wil_sta_unused;
 596         clear_bit(wil_status_fwconnecting, wil->status);
 597         mutex_unlock(&wil->mutex);
 598 }
 599
 600 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 601                                void *d, int len)
 602 {
 603         struct wmi_disconnect_event *evt = d;
 604         u16 reason_code = le16_to_cpu(evt->protocol_reason_status);
 605
 606         wil_info(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
 607                  evt->bssid, reason_code, evt->disconnect_reason);
 608
 609         wil->sinfo_gen++;
 610
 611         if (test_bit(wil_status_resetting, wil->status) ||
 612             !test_bit(wil_status_fwready, wil->status)) {
 613                 wil_err(wil, "status_resetting, cancel disconnect event\n");
 614                 /* no need for cleanup, wil_reset will do that */
 615                 return;
 616         }
 617
 618         mutex_lock(&wil->mutex);
 619         wil6210_disconnect(wil, evt->bssid, reason_code, true);
 620         mutex_unlock(&wil->mutex);
 621 }
 622
 623 /*
 624  * Firmware reports EAPOL frame using WME event.
 625  * Reconstruct Ethernet frame and deliver it via normal Rx
 626  */
 627 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
 628                              void *d, int len)
 629 {
 630         struct net_device *ndev = wil_to_ndev(wil);
 631         struct wmi_eapol_rx_event *evt = d;
 632         u16 eapol_len = le16_to_cpu(evt->eapol_len);
 633         int sz = eapol_len + ETH_HLEN;
 634         struct sk_buff *skb;
 635         struct ethhdr *eth;
 636         int cid;
 637         struct wil_net_stats *stats = NULL;
 638
 639         wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
 640                     evt->src_mac);
 641
 642         cid = wil_find_cid(wil, evt->src_mac);
 643         if (cid >= 0)
 644                 stats = &wil->sta[cid].stats;
 645
 646         if (eapol_len > 196) { /* TODO: revisit size limit */
 647                 wil_err(wil, "EAPOL too large\n");
 648                 return;
 649         }
 650
 651         skb = alloc_skb(sz, GFP_KERNEL);
 652         if (!skb) {
 653                 wil_err(wil, "Failed to allocate skb\n");
 654                 return;
 655         }
 656
 657         eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
 658         ether_addr_copy(eth->h_dest, ndev->dev_addr);
 659         ether_addr_copy(eth->h_source, evt->src_mac);
 660         eth->h_proto = cpu_to_be16(ETH_P_PAE);
 661         memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
 662         skb->protocol = eth_type_trans(skb, ndev);
 663         if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
 664                 ndev->stats.rx_packets++;
 665                 ndev->stats.rx_bytes += sz;
 666                 if (stats) {
 667                         stats->rx_packets++;
 668                         stats->rx_bytes += sz;
 669                 }
 670         } else {
 671                 ndev->stats.rx_dropped++;
 672                 if (stats)
 673                         stats->rx_dropped++;
 674         }
 675 }
 676
 677 static void wmi_evt_vring_en(struct wil6210_priv *wil, int id, void *d, int len)
 678 {
 679         struct wmi_vring_en_event *evt = d;
 680         u8 vri = evt->vring_index;
 681
 682         wil_dbg_wmi(wil, "Enable vring %d\n", vri);
 683
 684         if (vri >= ARRAY_SIZE(wil->vring_tx)) {
 685                 wil_err(wil, "Enable for invalid vring %d\n", vri);
 686                 return;
 687         }
 688         wil->vring_tx_data[vri].dot1x_open = true;
 689         if (vri == wil->bcast_vring) /* no BA for bcast */
 690                 return;
 691         if (agg_wsize >= 0)
 692                 wil_addba_tx_request(wil, vri, agg_wsize);
 693 }
 694
 695 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 696                               int len)
 697 {
 698         struct wmi_ba_status_event *evt = d;
 699         struct vring_tx_data *txdata;
 700
 701         wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d AMSDU%s\n",
 702                     evt->ringid,
 703                     evt->status == WMI_BA_AGREED ? "OK" : "N/A",
 704                     evt->agg_wsize, __le16_to_cpu(evt->ba_timeout),
 705                     evt->amsdu ? "+" : "-");
 706
 707         if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
 708                 wil_err(wil, "invalid ring id %d\n", evt->ringid);
 709                 return;
 710         }
 711
 712         if (evt->status != WMI_BA_AGREED) {
 713                 evt->ba_timeout = 0;
 714                 evt->agg_wsize = 0;
 715                 evt->amsdu = 0;
 716         }
 717
 718         txdata = &wil->vring_tx_data[evt->ringid];
 719
 720         txdata->agg_timeout = le16_to_cpu(evt->ba_timeout);
 721         txdata->agg_wsize = evt->agg_wsize;
 722         txdata->agg_amsdu = evt->amsdu;
 723         txdata->addba_in_progress = false;
 724 }
 725
 726 static void wmi_evt_addba_rx_req(struct wil6210_priv *wil, int id, void *d,
 727                                  int len)
 728 {
 729         struct wmi_rcp_addba_req_event *evt = d;
 730
 731         wil_addba_rx_request(wil, evt->cidxtid, evt->dialog_token,
 732                              evt->ba_param_set, evt->ba_timeout,
 733                              evt->ba_seq_ctrl);
 734 }
 735
 736 static void wmi_evt_delba(struct wil6210_priv *wil, int id, void *d, int len)
 737 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
 738 {
 739         struct wmi_delba_event *evt = d;
 740         u8 cid, tid;
 741         u16 reason = __le16_to_cpu(evt->reason);
 742         struct wil_sta_info *sta;
 743         struct wil_tid_ampdu_rx *r;
 744
 745         might_sleep();
 746         parse_cidxtid(evt->cidxtid, &cid, &tid);
 747         wil_dbg_wmi(wil, "DELBA CID %d TID %d from %s reason %d\n",
 748                     cid, tid,
 749                     evt->from_initiator ? "originator" : "recipient",
 750                     reason);
 751         if (!evt->from_initiator) {
 752                 int i;
 753                 /* find Tx vring it belongs to */
 754                 for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) {
 755                         if ((wil->vring2cid_tid[i][0] == cid) &&
 756                             (wil->vring2cid_tid[i][1] == tid)) {
 757                                 struct vring_tx_data *txdata =
 758                                         &wil->vring_tx_data[i];
 759
 760                                 wil_dbg_wmi(wil, "DELBA Tx vring %d\n", i);
 761                                 txdata->agg_timeout = 0;
 762                                 txdata->agg_wsize = 0;
 763                                 txdata->addba_in_progress = false;
 764
 765                                 break; /* max. 1 matching ring */
 766                         }
 767                 }
 768                 if (i >= ARRAY_SIZE(wil->vring2cid_tid))
 769                         wil_err(wil, "DELBA: unable to find Tx vring\n");
 770                 return;
 771         }
 772
 773         sta = &wil->sta[cid];
 774
 775         spin_lock_bh(&sta->tid_rx_lock);
 776
 777         r = sta->tid_rx[tid];
 778         sta->tid_rx[tid] = NULL;
 779         wil_tid_ampdu_rx_free(wil, r);
 780
 781         spin_unlock_bh(&sta->tid_rx_lock);
 782 }
 783
 784 /**
 785  * Some events are ignored for purpose; and need not be interpreted as
 786  * "unhandled events"
 787  */
 788 static void wmi_evt_ignore(struct wil6210_priv *wil, int id, void *d, int len)
 789 {
 790         wil_dbg_wmi(wil, "Ignore event 0x%04x len %d\n", id, len);
 791 }
 792
 793 static const struct {
 794         int eventid;
 795         void (*handler)(struct wil6210_priv *wil, int eventid,
 796                         void *data, int data_len);
 797 } wmi_evt_handlers[] = {
 798         {WMI_READY_EVENTID,             wmi_evt_ready},
 799         {WMI_FW_READY_EVENTID,                  wmi_evt_ignore},
 800         {WMI_RX_MGMT_PACKET_EVENTID,    wmi_evt_rx_mgmt},
 801         {WMI_TX_MGMT_PACKET_EVENTID,            wmi_evt_tx_mgmt},
 802         {WMI_SCAN_COMPLETE_EVENTID,     wmi_evt_scan_complete},
 803         {WMI_CONNECT_EVENTID,           wmi_evt_connect},
 804         {WMI_DISCONNECT_EVENTID,        wmi_evt_disconnect},
 805         {WMI_EAPOL_RX_EVENTID,          wmi_evt_eapol_rx},
 806         {WMI_BA_STATUS_EVENTID,         wmi_evt_ba_status},
 807         {WMI_RCP_ADDBA_REQ_EVENTID,     wmi_evt_addba_rx_req},
 808         {WMI_DELBA_EVENTID,             wmi_evt_delba},
 809         {WMI_VRING_EN_EVENTID,          wmi_evt_vring_en},
 810         {WMI_DATA_PORT_OPEN_EVENTID,            wmi_evt_ignore},
 811 };
 812
 813 /*
 814  * Run in IRQ context
 815  * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
 816  * that will be eventually handled by the @wmi_event_worker in the thread
 817  * context of thread "wil6210_wmi"
 818  */
 819 void wmi_recv_cmd(struct wil6210_priv *wil)
 820 {
 821         struct wil6210_mbox_ring_desc d_tail;
 822         struct wil6210_mbox_hdr hdr;
 823         struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
 824         struct pending_wmi_event *evt;
 825         u8 *cmd;
 826         void __iomem *src;
 827         ulong flags;
 828         unsigned n;
 829         unsigned int num_immed_reply = 0;
 830
 831         if (!test_bit(wil_status_mbox_ready, wil->status)) {
 832                 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 833                 return;
 834         }
 835
 836         for (n = 0;; n++) {
 837                 u16 len;
 838                 bool q;
 839                 bool immed_reply = false;
 840
 841                 r->head = wil_r(wil, RGF_MBOX +
 842                                 offsetof(struct wil6210_mbox_ctl, rx.head));
 843                 if (r->tail == r->head)
 844                         break;
 845
 846                 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
 847                             r->head, r->tail);
 848                 /* read cmd descriptor from tail */
 849                 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
 850                                      sizeof(struct wil6210_mbox_ring_desc));
 851                 if (d_tail.sync == 0) {
 852                         wil_err(wil, "Mbox evt not owned by FW?\n");
 853                         break;
 854                 }
 855
 856                 /* read cmd header from descriptor */
 857                 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
 858                         wil_err(wil, "Mbox evt at 0x%08x?\n",
 859                                 le32_to_cpu(d_tail.addr));
 860                         break;
 861                 }
 862                 len = le16_to_cpu(hdr.len);
 863                 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
 864                             le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
 865                             hdr.flags);
 866
 867                 /* read cmd buffer from descriptor */
 868                 src = wmi_buffer(wil, d_tail.addr) +
 869                       sizeof(struct wil6210_mbox_hdr);
 870                 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
 871                                              event.wmi) + len, 4),
 872                               GFP_KERNEL);
 873                 if (!evt)
 874                         break;
 875
 876                 evt->event.hdr = hdr;
 877                 cmd = (void *)&evt->event.wmi;
 878                 wil_memcpy_fromio_32(cmd, src, len);
 879                 /* mark entry as empty */
 880                 wil_w(wil, r->tail +
 881                       offsetof(struct wil6210_mbox_ring_desc, sync), 0);
 882                 /* indicate */
 883                 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
 884                     (len >= sizeof(struct wmi_cmd_hdr))) {
 885                         struct wmi_cmd_hdr *wmi = &evt->event.wmi;
 886                         u16 id = le16_to_cpu(wmi->command_id);
 887                         u32 tstamp = le32_to_cpu(wmi->fw_timestamp);
 888                         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 889                         if (wil->reply_id && wil->reply_id == id) {
 890                                 if (wil->reply_buf) {
 891                                         memcpy(wil->reply_buf, wmi,
 892                                                min(len, wil->reply_size));
 893                                         immed_reply = true;
 894                                 }
 895                         }
 896                         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 897
 898                         wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 899                                     id, wmi->mid, tstamp);
 900                         trace_wil6210_wmi_event(wmi, &wmi[1],
 901                                                 len - sizeof(*wmi));
 902                 }
 903                 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
 904                                  &evt->event.hdr, sizeof(hdr) + len, true);
 905
 906                 /* advance tail */
 907                 r->tail = r->base + ((r->tail - r->base +
 908                           sizeof(struct wil6210_mbox_ring_desc)) % r->size);
 909                 wil_w(wil, RGF_MBOX +
 910                       offsetof(struct wil6210_mbox_ctl, rx.tail), r->tail);
 911
 912                 if (immed_reply) {
 913                         wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
 914                                     __func__, wil->reply_id);
 915                         kfree(evt);
 916                         num_immed_reply++;
 917                         complete(&wil->wmi_call);
 918                 } else {
 919                         /* add to the pending list */
 920                         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 921                         list_add_tail(&evt->list, &wil->pending_wmi_ev);
 922                         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 923                         q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
 924                         wil_dbg_wmi(wil, "queue_work -> %d\n", q);
 925                 }
 926         }
 927         /* normally, 1 event per IRQ should be processed */
 928         wil_dbg_wmi(wil, "%s -> %d events queued, %d completed\n", __func__,
 929                     n - num_immed_reply, num_immed_reply);
 930 }
 931
 932 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 933              u16 reply_id, void *reply, u8 reply_size, int to_msec)
 934 {
 935         int rc;
 936         unsigned long remain;
 937
 938         mutex_lock(&wil->wmi_mutex);
 939
 940         spin_lock(&wil->wmi_ev_lock);
 941         wil->reply_id = reply_id;
 942         wil->reply_buf = reply;
 943         wil->reply_size = reply_size;
 944         spin_unlock(&wil->wmi_ev_lock);
 945
 946         rc = __wmi_send(wil, cmdid, buf, len);
 947         if (rc)
 948                 goto out;
 949
 950         remain = wait_for_completion_timeout(&wil->wmi_call,
 951                                              msecs_to_jiffies(to_msec));
 952         if (0 == remain) {
 953                 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 954                         cmdid, reply_id, to_msec);
 955                 rc = -ETIME;
 956         } else {
 957                 wil_dbg_wmi(wil,
 958                             "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
 959                             cmdid, reply_id,
 960                             to_msec - jiffies_to_msecs(remain));
 961         }
 962
 963 out:
 964         spin_lock(&wil->wmi_ev_lock);
 965         wil->reply_id = 0;
 966         wil->reply_buf = NULL;
 967         wil->reply_size = 0;
 968         spin_unlock(&wil->wmi_ev_lock);
 969
 970         mutex_unlock(&wil->wmi_mutex);
 971
 972         return rc;
 973 }
 974
 975 int wmi_echo(struct wil6210_priv *wil)
 976 {
 977         struct wmi_echo_cmd cmd = {
 978                 .value = cpu_to_le32(0x12345678),
 979         };
 980
 981         return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
 982                         WMI_ECHO_RSP_EVENTID, NULL, 0, 50);
 983 }
 984
 985 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
 986 {
 987         struct wmi_set_mac_address_cmd cmd;
 988
 989         ether_addr_copy(cmd.mac, addr);
 990
 991         wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
 992
 993         return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
 994 }
 995
 996 int wmi_led_cfg(struct wil6210_priv *wil, bool enable)
 997 {
 998         int rc = 0;
 999         struct wmi_led_cfg_cmd cmd = {
1000                 .led_mode = enable,
1001                 .id = led_id,
1002                 .slow_blink_cfg.blink_on =
1003                         cpu_to_le32(led_blink_time[WIL_LED_TIME_SLOW].on_ms),
1004                 .slow_blink_cfg.blink_off =
1005                         cpu_to_le32(led_blink_time[WIL_LED_TIME_SLOW].off_ms),
1006                 .medium_blink_cfg.blink_on =
1007                         cpu_to_le32(led_blink_time[WIL_LED_TIME_MED].on_ms),
1008                 .medium_blink_cfg.blink_off =
1009                         cpu_to_le32(led_blink_time[WIL_LED_TIME_MED].off_ms),
1010                 .fast_blink_cfg.blink_on =
1011                         cpu_to_le32(led_blink_time[WIL_LED_TIME_FAST].on_ms),
1012                 .fast_blink_cfg.blink_off =
1013                         cpu_to_le32(led_blink_time[WIL_LED_TIME_FAST].off_ms),
1014                 .led_polarity = led_polarity,
1015         };
1016         struct {
1017                 struct wmi_cmd_hdr wmi;
1018                 struct wmi_led_cfg_done_event evt;
1019         } __packed reply;
1020
1021         if (led_id == WIL_LED_INVALID_ID)
1022                 goto out;
1023
1024         if (led_id > WIL_LED_MAX_ID) {
1025                 wil_err(wil, "Invalid led id %d\n", led_id);
1026                 rc = -EINVAL;
1027                 goto out;
1028         }
1029
1030         wil_dbg_wmi(wil,
1031                     "%s led %d\n",
1032                     enable ? "enabling" : "disabling", led_id);
1033
1034         rc = wmi_call(wil, WMI_LED_CFG_CMDID, &cmd, sizeof(cmd),
1035                       WMI_LED_CFG_DONE_EVENTID, &reply, sizeof(reply),
1036                       100);
1037         if (rc)
1038                 goto out;
1039
1040         if (reply.evt.status) {
1041                 wil_err(wil, "led %d cfg failed with status %d\n",
1042                         led_id, le32_to_cpu(reply.evt.status));
1043                 rc = -EINVAL;
1044         }
1045
1046 out:
1047         return rc;
1048 }
1049
1050 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype,
1051                   u8 chan, u8 hidden_ssid, u8 is_go)
1052 {
1053         int rc;
1054
1055         struct wmi_pcp_start_cmd cmd = {
1056                 .bcon_interval = cpu_to_le16(bi),
1057                 .network_type = wmi_nettype,
1058                 .disable_sec_offload = 1,
1059                 .channel = chan - 1,
1060                 .pcp_max_assoc_sta = max_assoc_sta,
1061                 .hidden_ssid = hidden_ssid,
1062                 .is_go = is_go,
1063         };
1064         struct {
1065                 struct wmi_cmd_hdr wmi;
1066                 struct wmi_pcp_started_event evt;
1067         } __packed reply;
1068
1069         if (!wil->privacy)
1070                 cmd.disable_sec = 1;
1071
1072         if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
1073             (cmd.pcp_max_assoc_sta <= 0)) {
1074                 wil_info(wil,
1075                          "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
1076                          max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
1077                 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
1078         }
1079
1080         /*
1081          * Processing time may be huge, in case of secure AP it takes about
1082          * 3500ms for FW to start AP
1083          */
1084         rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
1085                       WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
1086         if (rc)
1087                 return rc;
1088
1089         if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
1090                 rc = -EINVAL;
1091
1092         if (wmi_nettype != WMI_NETTYPE_P2P)
1093                 /* Don't fail due to error in the led configuration */
1094                 wmi_led_cfg(wil, true);
1095
1096         return rc;
1097 }
1098
1099 int wmi_pcp_stop(struct wil6210_priv *wil)
1100 {
1101         int rc;
1102
1103         rc = wmi_led_cfg(wil, false);
1104         if (rc)
1105                 return rc;
1106
1107         return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
1108                         WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
1109 }
1110
1111 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
1112 {
1113         struct wmi_set_ssid_cmd cmd = {
1114                 .ssid_len = cpu_to_le32(ssid_len),
1115         };
1116
1117         if (ssid_len > sizeof(cmd.ssid))
1118                 return -EINVAL;
1119
1120         memcpy(cmd.ssid, ssid, ssid_len);
1121
1122         return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
1123 }
1124
1125 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
1126 {
1127         int rc;
1128         struct {
1129                 struct wmi_cmd_hdr wmi;
1130                 struct wmi_set_ssid_cmd cmd;
1131         } __packed reply;
1132         int len; /* reply.cmd.ssid_len in CPU order */
1133
1134         rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
1135                       &reply, sizeof(reply), 20);
1136         if (rc)
1137                 return rc;
1138
1139         len = le32_to_cpu(reply.cmd.ssid_len);
1140         if (len > sizeof(reply.cmd.ssid))
1141                 return -EINVAL;
1142
1143         *ssid_len = len;
1144         memcpy(ssid, reply.cmd.ssid, len);
1145
1146         return 0;
1147 }
1148
1149 int wmi_set_channel(struct wil6210_priv *wil, int channel)
1150 {
1151         struct wmi_set_pcp_channel_cmd cmd = {
1152                 .channel = channel - 1,
1153         };
1154
1155         return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
1156 }
1157
1158 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
1159 {
1160         int rc;
1161         struct {
1162                 struct wmi_cmd_hdr wmi;
1163                 struct wmi_set_pcp_channel_cmd cmd;
1164         } __packed reply;
1165
1166         rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
1167                       WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
1168         if (rc)
1169                 return rc;
1170
1171         if (reply.cmd.channel > 3)
1172                 return -EINVAL;
1173
1174         *channel = reply.cmd.channel + 1;
1175
1176         return 0;
1177 }
1178
1179 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel, int bi)
1180 {
1181         int rc;
1182         struct wmi_p2p_cfg_cmd cmd = {
1183                 .discovery_mode = WMI_DISCOVERY_MODE_PEER2PEER,
1184                 .bcon_interval = cpu_to_le16(bi),
1185                 .channel = channel - 1,
1186         };
1187         struct {
1188                 struct wmi_cmd_hdr wmi;
1189                 struct wmi_p2p_cfg_done_event evt;
1190         } __packed reply;
1191
1192         wil_dbg_wmi(wil, "sending WMI_P2P_CFG_CMDID\n");
1193
1194         rc = wmi_call(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd),
1195                       WMI_P2P_CFG_DONE_EVENTID, &reply, sizeof(reply), 300);
1196         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1197                 wil_err(wil, "P2P_CFG failed. status %d\n", reply.evt.status);
1198                 rc = -EINVAL;
1199         }
1200
1201         return rc;
1202 }
1203
1204 int wmi_start_listen(struct wil6210_priv *wil)
1205 {
1206         int rc;
1207         struct {
1208                 struct wmi_cmd_hdr wmi;
1209                 struct wmi_listen_started_event evt;
1210         } __packed reply;
1211
1212         wil_dbg_wmi(wil, "sending WMI_START_LISTEN_CMDID\n");
1213
1214         rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1215                       WMI_LISTEN_STARTED_EVENTID, &reply, sizeof(reply), 300);
1216         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1217                 wil_err(wil, "device failed to start listen. status %d\n",
1218                         reply.evt.status);
1219                 rc = -EINVAL;
1220         }
1221
1222         return rc;
1223 }
1224
1225 int wmi_start_search(struct wil6210_priv *wil)
1226 {
1227         int rc;
1228         struct {
1229                 struct wmi_cmd_hdr wmi;
1230                 struct wmi_search_started_event evt;
1231         } __packed reply;
1232
1233         wil_dbg_wmi(wil, "sending WMI_START_SEARCH_CMDID\n");
1234
1235         rc = wmi_call(wil, WMI_START_SEARCH_CMDID, NULL, 0,
1236                       WMI_SEARCH_STARTED_EVENTID, &reply, sizeof(reply), 300);
1237         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1238                 wil_err(wil, "device failed to start search. status %d\n",
1239                         reply.evt.status);
1240                 rc = -EINVAL;
1241         }
1242
1243         return rc;
1244 }
1245
1246 int wmi_stop_discovery(struct wil6210_priv *wil)
1247 {
1248         int rc;
1249
1250         wil_dbg_wmi(wil, "sending WMI_DISCOVERY_STOP_CMDID\n");
1251
1252         rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1253                       WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 100);
1254
1255         if (rc)
1256                 wil_err(wil, "Failed to stop discovery\n");
1257
1258         return rc;
1259 }
1260
1261 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
1262                        const void *mac_addr, int key_usage)
1263 {
1264         struct wmi_delete_cipher_key_cmd cmd = {
1265                 .key_index = key_index,
1266         };
1267
1268         if (mac_addr)
1269                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1270
1271         return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1272 }
1273
1274 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
1275                        const void *mac_addr, int key_len, const void *key,
1276                        int key_usage)
1277 {
1278         struct wmi_add_cipher_key_cmd cmd = {
1279                 .key_index = key_index,
1280                 .key_usage = key_usage,
1281                 .key_len = key_len,
1282         };
1283
1284         if (!key || (key_len > sizeof(cmd.key)))
1285                 return -EINVAL;
1286
1287         memcpy(cmd.key, key, key_len);
1288         if (mac_addr)
1289                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1290
1291         return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1292 }
1293
1294 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
1295 {
1296         static const char *const names[] = {
1297                 [WMI_FRAME_BEACON]      = "BEACON",
1298                 [WMI_FRAME_PROBE_REQ]   = "PROBE_REQ",
1299                 [WMI_FRAME_PROBE_RESP]  = "WMI_FRAME_PROBE_RESP",
1300                 [WMI_FRAME_ASSOC_REQ]   = "WMI_FRAME_ASSOC_REQ",
1301                 [WMI_FRAME_ASSOC_RESP]  = "WMI_FRAME_ASSOC_RESP",
1302         };
1303         int rc;
1304         u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
1305         struct wmi_set_appie_cmd *cmd;
1306
1307         if (len < ie_len) {
1308                 rc = -EINVAL;
1309                 goto out;
1310         }
1311
1312         cmd = kzalloc(len, GFP_KERNEL);
1313         if (!cmd) {
1314                 rc = -ENOMEM;
1315                 goto out;
1316         }
1317         if (!ie)
1318                 ie_len = 0;
1319
1320         cmd->mgmt_frm_type = type;
1321         /* BUG: FW API define ieLen as u8. Will fix FW */
1322         cmd->ie_len = cpu_to_le16(ie_len);
1323         memcpy(cmd->ie_info, ie, ie_len);
1324         rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
1325         kfree(cmd);
1326 out:
1327         if (rc) {
1328                 const char *name = type < ARRAY_SIZE(names) ?
1329                                    names[type] : "??";
1330                 wil_err(wil, "set_ie(%d %s) failed : %d\n", type, name, rc);
1331         }
1332
1333         return rc;
1334 }
1335
1336 /**
1337  * wmi_rxon - turn radio on/off
1338  * @on:         turn on if true, off otherwise
1339  *
1340  * Only switch radio. Channel should be set separately.
1341  * No timeout for rxon - radio turned on forever unless some other call
1342  * turns it off
1343  */
1344 int wmi_rxon(struct wil6210_priv *wil, bool on)
1345 {
1346         int rc;
1347         struct {
1348                 struct wmi_cmd_hdr wmi;
1349                 struct wmi_listen_started_event evt;
1350         } __packed reply;
1351
1352         wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1353
1354         if (on) {
1355                 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1356                               WMI_LISTEN_STARTED_EVENTID,
1357                               &reply, sizeof(reply), 100);
1358                 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1359                         rc = -EINVAL;
1360         } else {
1361                 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1362                               WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1363         }
1364
1365         return rc;
1366 }
1367
1368 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1369 {
1370         struct wireless_dev *wdev = wil->wdev;
1371         struct net_device *ndev = wil_to_ndev(wil);
1372         struct wmi_cfg_rx_chain_cmd cmd = {
1373                 .action = WMI_RX_CHAIN_ADD,
1374                 .rx_sw_ring = {
1375                         .max_mpdu_size = cpu_to_le16(wil_mtu2macbuf(mtu_max)),
1376                         .ring_mem_base = cpu_to_le64(vring->pa),
1377                         .ring_size = cpu_to_le16(vring->size),
1378                 },
1379                 .mid = 0, /* TODO - what is it? */
1380                 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1381                 .reorder_type = WMI_RX_SW_REORDER,
1382                 .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh),
1383         };
1384         struct {
1385                 struct wmi_cmd_hdr wmi;
1386                 struct wmi_cfg_rx_chain_done_event evt;
1387         } __packed evt;
1388         int rc;
1389
1390         if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1391                 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1392
1393                 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1394                 if (ch)
1395                         cmd.sniffer_cfg.channel = ch->hw_value - 1;
1396                 cmd.sniffer_cfg.phy_info_mode =
1397                         cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1398                 cmd.sniffer_cfg.phy_support =
1399                         cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1400                                     ? WMI_SNIFFER_CP : WMI_SNIFFER_BOTH_PHYS);
1401         } else {
1402                 /* Initialize offload (in non-sniffer mode).
1403                  * Linux IP stack always calculates IP checksum
1404                  * HW always calculate TCP/UDP checksum
1405                  */
1406                 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1407         }
1408
1409         if (rx_align_2)
1410                 cmd.l2_802_3_offload_ctrl |=
1411                                 L2_802_3_OFFLOAD_CTRL_SNAP_KEEP_MSK;
1412
1413         /* typical time for secure PCP is 840ms */
1414         rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1415                       WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1416         if (rc)
1417                 return rc;
1418
1419         vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1420
1421         wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1422                      le32_to_cpu(evt.evt.status), vring->hwtail);
1423
1424         if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1425                 rc = -EINVAL;
1426
1427         return rc;
1428 }
1429
1430 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf)
1431 {
1432         int rc;
1433         struct wmi_temp_sense_cmd cmd = {
1434                 .measure_baseband_en = cpu_to_le32(!!t_bb),
1435                 .measure_rf_en = cpu_to_le32(!!t_rf),
1436                 .measure_mode = cpu_to_le32(TEMPERATURE_MEASURE_NOW),
1437         };
1438         struct {
1439                 struct wmi_cmd_hdr wmi;
1440                 struct wmi_temp_sense_done_event evt;
1441         } __packed reply;
1442
1443         rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1444                       WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1445         if (rc)
1446                 return rc;
1447
1448         if (t_bb)
1449                 *t_bb = le32_to_cpu(reply.evt.baseband_t1000);
1450         if (t_rf)
1451                 *t_rf = le32_to_cpu(reply.evt.rf_t1000);
1452
1453         return 0;
1454 }
1455
1456 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason,
1457                        bool full_disconnect)
1458 {
1459         int rc;
1460         u16 reason_code;
1461         struct wmi_disconnect_sta_cmd cmd = {
1462                 .disconnect_reason = cpu_to_le16(reason),
1463         };
1464         struct {
1465                 struct wmi_cmd_hdr wmi;
1466                 struct wmi_disconnect_event evt;
1467         } __packed reply;
1468
1469         ether_addr_copy(cmd.dst_mac, mac);
1470
1471         wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1472
1473         rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd),
1474                       WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 1000);
1475         /* failure to disconnect in reasonable time treated as FW error */
1476         if (rc) {
1477                 wil_fw_error_recovery(wil);
1478                 return rc;
1479         }
1480
1481         if (full_disconnect) {
1482                 /* call event handler manually after processing wmi_call,
1483                  * to avoid deadlock - disconnect event handler acquires
1484                  * wil->mutex while it is already held here
1485                  */
1486                 reason_code = le16_to_cpu(reply.evt.protocol_reason_status);
1487
1488                 wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
1489                             reply.evt.bssid, reason_code,
1490                             reply.evt.disconnect_reason);
1491
1492                 wil->sinfo_gen++;
1493                 wil6210_disconnect(wil, reply.evt.bssid, reason_code, true);
1494         }
1495         return 0;
1496 }
1497
1498 int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout)
1499 {
1500         struct wmi_vring_ba_en_cmd cmd = {
1501                 .ringid = ringid,
1502                 .agg_max_wsize = size,
1503                 .ba_timeout = cpu_to_le16(timeout),
1504                 .amsdu = 0,
1505         };
1506
1507         wil_dbg_wmi(wil, "%s(ring %d size %d timeout %d)\n", __func__,
1508                     ringid, size, timeout);
1509
1510         return wmi_send(wil, WMI_VRING_BA_EN_CMDID, &cmd, sizeof(cmd));
1511 }
1512
1513 int wmi_delba_tx(struct wil6210_priv *wil, u8 ringid, u16 reason)
1514 {
1515         struct wmi_vring_ba_dis_cmd cmd = {
1516                 .ringid = ringid,
1517                 .reason = cpu_to_le16(reason),
1518         };
1519
1520         wil_dbg_wmi(wil, "%s(ring %d reason %d)\n", __func__,
1521                     ringid, reason);
1522
1523         return wmi_send(wil, WMI_VRING_BA_DIS_CMDID, &cmd, sizeof(cmd));
1524 }
1525
1526 int wmi_delba_rx(struct wil6210_priv *wil, u8 cidxtid, u16 reason)
1527 {
1528         struct wmi_rcp_delba_cmd cmd = {
1529                 .cidxtid = cidxtid,
1530                 .reason = cpu_to_le16(reason),
1531         };
1532
1533         wil_dbg_wmi(wil, "%s(CID %d TID %d reason %d)\n", __func__,
1534                     cidxtid & 0xf, (cidxtid >> 4) & 0xf, reason);
1535
1536         return wmi_send(wil, WMI_RCP_DELBA_CMDID, &cmd, sizeof(cmd));
1537 }
1538
1539 int wmi_addba_rx_resp(struct wil6210_priv *wil, u8 cid, u8 tid, u8 token,
1540                       u16 status, bool amsdu, u16 agg_wsize, u16 timeout)
1541 {
1542         int rc;
1543         struct wmi_rcp_addba_resp_cmd cmd = {
1544                 .cidxtid = mk_cidxtid(cid, tid),
1545                 .dialog_token = token,
1546                 .status_code = cpu_to_le16(status),
1547                 /* bit 0: A-MSDU supported
1548                  * bit 1: policy (should be 0 for us)
1549                  * bits 2..5: TID
1550                  * bits 6..15: buffer size
1551                  */
1552                 .ba_param_set = cpu_to_le16((amsdu ? 1 : 0) | (tid << 2) |
1553                                             (agg_wsize << 6)),
1554                 .ba_timeout = cpu_to_le16(timeout),
1555         };
1556         struct {
1557                 struct wmi_cmd_hdr wmi;
1558                 struct wmi_rcp_addba_resp_sent_event evt;
1559         } __packed reply;
1560
1561         wil_dbg_wmi(wil,
1562                     "ADDBA response for CID %d TID %d size %d timeout %d status %d AMSDU%s\n",
1563                     cid, tid, agg_wsize, timeout, status, amsdu ? "+" : "-");
1564
1565         rc = wmi_call(wil, WMI_RCP_ADDBA_RESP_CMDID, &cmd, sizeof(cmd),
1566                       WMI_RCP_ADDBA_RESP_SENT_EVENTID, &reply, sizeof(reply),
1567                       100);
1568         if (rc)
1569                 return rc;
1570
1571         if (reply.evt.status) {
1572                 wil_err(wil, "ADDBA response failed with status %d\n",
1573                         le16_to_cpu(reply.evt.status));
1574                 rc = -EINVAL;
1575         }
1576
1577         return rc;
1578 }
1579
1580 void wmi_event_flush(struct wil6210_priv *wil)
1581 {
1582         struct pending_wmi_event *evt, *t;
1583
1584         wil_dbg_wmi(wil, "%s()\n", __func__);
1585
1586         list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1587                 list_del(&evt->list);
1588                 kfree(evt);
1589         }
1590 }
1591
1592 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1593                                  void *d, int len)
1594 {
1595         uint i;
1596
1597         for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1598                 if (wmi_evt_handlers[i].eventid == id) {
1599                         wmi_evt_handlers[i].handler(wil, id, d, len);
1600                         return true;
1601                 }
1602         }
1603
1604         return false;
1605 }
1606
1607 static void wmi_event_handle(struct wil6210_priv *wil,
1608                              struct wil6210_mbox_hdr *hdr)
1609 {
1610         u16 len = le16_to_cpu(hdr->len);
1611
1612         if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1613             (len >= sizeof(struct wmi_cmd_hdr))) {
1614                 struct wmi_cmd_hdr *wmi = (void *)(&hdr[1]);
1615                 void *evt_data = (void *)(&wmi[1]);
1616                 u16 id = le16_to_cpu(wmi->command_id);
1617
1618                 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1619                             id, wil->reply_id);
1620                 /* check if someone waits for this event */
1621                 if (wil->reply_id && wil->reply_id == id) {
1622                         WARN_ON(wil->reply_buf);
1623                         wmi_evt_call_handler(wil, id, evt_data,
1624                                              len - sizeof(*wmi));
1625                         wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
1626                                     __func__, id);
1627                         complete(&wil->wmi_call);
1628                         return;
1629                 }
1630                 /* unsolicited event */
1631                 /* search for handler */
1632                 if (!wmi_evt_call_handler(wil, id, evt_data,
1633                                           len - sizeof(*wmi))) {
1634                         wil_info(wil, "Unhandled event 0x%04x\n", id);
1635                 }
1636         } else {
1637                 wil_err(wil, "Unknown event type\n");
1638                 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1639                                hdr, sizeof(*hdr) + len, true);
1640         }
1641 }
1642
1643 /*
1644  * Retrieve next WMI event from the pending list
1645  */
1646 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1647 {
1648         ulong flags;
1649         struct list_head *ret = NULL;
1650
1651         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1652
1653         if (!list_empty(&wil->pending_wmi_ev)) {
1654                 ret = wil->pending_wmi_ev.next;
1655                 list_del(ret);
1656         }
1657
1658         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1659
1660         return ret;
1661 }
1662
1663 /*
1664  * Handler for the WMI events
1665  */
1666 void wmi_event_worker(struct work_struct *work)
1667 {
1668         struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1669                                                  wmi_event_worker);
1670         struct pending_wmi_event *evt;
1671         struct list_head *lh;
1672
1673         wil_dbg_wmi(wil, "Start %s\n", __func__);
1674         while ((lh = next_wmi_ev(wil)) != NULL) {
1675                 evt = list_entry(lh, struct pending_wmi_event, list);
1676                 wmi_event_handle(wil, &evt->event.hdr);
1677                 kfree(evt);
1678         }
1679         wil_dbg_wmi(wil, "Finished %s\n", __func__);
1680 }