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 (sizeof(cmd) + len > r->entry_size) {
 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->fw_version = le32_to_cpu(evt->sw_version);
 316         wil->n_mids = evt->numof_additional_mids;
 317
 318         wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version,
 319                  evt->mac, wil->n_mids);
 320         /* ignore MAC address, we already have it from the boot loader */
 321         snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
 322                  "%d", wil->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         if (wil->scan_request) {
 428                 struct wmi_scan_complete_event *data = d;
 429                 bool aborted = (data->status != WMI_SCAN_SUCCESS);
 430
 431                 wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
 432                 wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n",
 433                              wil->scan_request, aborted);
 434
 435                 del_timer_sync(&wil->scan_timer);
 436                 mutex_lock(&wil->p2p_wdev_mutex);
 437                 cfg80211_scan_done(wil->scan_request, aborted);
 438                 wil->radio_wdev = wil->wdev;
 439                 mutex_unlock(&wil->p2p_wdev_mutex);
 440                 wil->scan_request = NULL;
 441         } else {
 442                 wil_err(wil, "SCAN_COMPLETE while not scanning\n");
 443         }
 444 }
 445
 446 static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len)
 447 {
 448         struct net_device *ndev = wil_to_ndev(wil);
 449         struct wireless_dev *wdev = wil->wdev;
 450         struct wmi_connect_event *evt = d;
 451         int ch; /* channel number */
 452         struct station_info sinfo;
 453         u8 *assoc_req_ie, *assoc_resp_ie;
 454         size_t assoc_req_ielen, assoc_resp_ielen;
 455         /* capinfo(u16) + listen_interval(u16) + IEs */
 456         const size_t assoc_req_ie_offset = sizeof(u16) * 2;
 457         /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */
 458         const size_t assoc_resp_ie_offset = sizeof(u16) * 3;
 459         int rc;
 460
 461         if (len < sizeof(*evt)) {
 462                 wil_err(wil, "Connect event too short : %d bytes\n", len);
 463                 return;
 464         }
 465         if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len +
 466                    evt->assoc_resp_len) {
 467                 wil_err(wil,
 468                         "Connect event corrupted : %d != %d + %d + %d + %d\n",
 469                         len, (int)sizeof(*evt), evt->beacon_ie_len,
 470                         evt->assoc_req_len, evt->assoc_resp_len);
 471                 return;
 472         }
 473         if (evt->cid >= WIL6210_MAX_CID) {
 474                 wil_err(wil, "Connect CID invalid : %d\n", evt->cid);
 475                 return;
 476         }
 477
 478         ch = evt->channel + 1;
 479         wil_info(wil, "Connect %pM channel [%d] cid %d\n",
 480                  evt->bssid, ch, evt->cid);
 481         wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1,
 482                          evt->assoc_info, len - sizeof(*evt), true);
 483
 484         /* figure out IE's */
 485         assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len +
 486                                         assoc_req_ie_offset];
 487         assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset;
 488         if (evt->assoc_req_len <= assoc_req_ie_offset) {
 489                 assoc_req_ie = NULL;
 490                 assoc_req_ielen = 0;
 491         }
 492
 493         assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len +
 494                                          evt->assoc_req_len +
 495                                          assoc_resp_ie_offset];
 496         assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset;
 497         if (evt->assoc_resp_len <= assoc_resp_ie_offset) {
 498                 assoc_resp_ie = NULL;
 499                 assoc_resp_ielen = 0;
 500         }
 501
 502         mutex_lock(&wil->mutex);
 503         if (test_bit(wil_status_resetting, wil->status) ||
 504             !test_bit(wil_status_fwready, wil->status)) {
 505                 wil_err(wil, "status_resetting, cancel connect event, CID %d\n",
 506                         evt->cid);
 507                 mutex_unlock(&wil->mutex);
 508                 /* no need for cleanup, wil_reset will do that */
 509                 return;
 510         }
 511
 512         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 513             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 514                 if (!test_bit(wil_status_fwconnecting, wil->status)) {
 515                         wil_err(wil, "Not in connecting state\n");
 516                         mutex_unlock(&wil->mutex);
 517                         return;
 518                 }
 519                 del_timer_sync(&wil->connect_timer);
 520         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 521                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 522                 if (wil->sta[evt->cid].status != wil_sta_unused) {
 523                         wil_err(wil, "%s: AP: Invalid status %d for CID %d\n",
 524                                 __func__, wil->sta[evt->cid].status, evt->cid);
 525                         mutex_unlock(&wil->mutex);
 526                         return;
 527                 }
 528         }
 529
 530         /* FIXME FW can transmit only ucast frames to peer */
 531         /* FIXME real ring_id instead of hard coded 0 */
 532         ether_addr_copy(wil->sta[evt->cid].addr, evt->bssid);
 533         wil->sta[evt->cid].status = wil_sta_conn_pending;
 534
 535         rc = wil_tx_init(wil, evt->cid);
 536         if (rc) {
 537                 wil_err(wil, "%s: config tx vring failed for CID %d, rc (%d)\n",
 538                         __func__, evt->cid, rc);
 539                 wmi_disconnect_sta(wil, wil->sta[evt->cid].addr,
 540                                    WLAN_REASON_UNSPECIFIED, false);
 541         } else {
 542                 wil_info(wil, "%s: successful connection to CID %d\n",
 543                          __func__, evt->cid);
 544         }
 545
 546         if ((wdev->iftype == NL80211_IFTYPE_STATION) ||
 547             (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) {
 548                 if (rc) {
 549                         netif_tx_stop_all_queues(ndev);
 550                         netif_carrier_off(ndev);
 551                         wil_err(wil,
 552                                 "%s: cfg80211_connect_result with failure\n",
 553                                 __func__);
 554                         cfg80211_connect_result(ndev, evt->bssid, NULL, 0,
 555                                                 NULL, 0,
 556                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
 557                                                 GFP_KERNEL);
 558                         goto out;
 559                 } else {
 560                         cfg80211_connect_result(ndev, evt->bssid,
 561                                                 assoc_req_ie, assoc_req_ielen,
 562                                                 assoc_resp_ie, assoc_resp_ielen,
 563                                                 WLAN_STATUS_SUCCESS,
 564                                                 GFP_KERNEL);
 565                 }
 566         } else if ((wdev->iftype == NL80211_IFTYPE_AP) ||
 567                    (wdev->iftype == NL80211_IFTYPE_P2P_GO)) {
 568                 if (rc)
 569                         goto out;
 570
 571                 memset(&sinfo, 0, sizeof(sinfo));
 572
 573                 sinfo.generation = wil->sinfo_gen++;
 574
 575                 if (assoc_req_ie) {
 576                         sinfo.assoc_req_ies = assoc_req_ie;
 577                         sinfo.assoc_req_ies_len = assoc_req_ielen;
 578                 }
 579
 580                 cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
 581         } else {
 582                 wil_err(wil, "%s: unhandled iftype %d for CID %d\n",
 583                         __func__, wdev->iftype, evt->cid);
 584                 goto out;
 585         }
 586
 587         wil->sta[evt->cid].status = wil_sta_connected;
 588         set_bit(wil_status_fwconnected, wil->status);
 589         netif_tx_wake_all_queues(ndev);
 590
 591 out:
 592         if (rc)
 593                 wil->sta[evt->cid].status = wil_sta_unused;
 594         clear_bit(wil_status_fwconnecting, wil->status);
 595         mutex_unlock(&wil->mutex);
 596 }
 597
 598 static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
 599                                void *d, int len)
 600 {
 601         struct wmi_disconnect_event *evt = d;
 602         u16 reason_code = le16_to_cpu(evt->protocol_reason_status);
 603
 604         wil_info(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
 605                  evt->bssid, reason_code, evt->disconnect_reason);
 606
 607         wil->sinfo_gen++;
 608
 609         mutex_lock(&wil->mutex);
 610         wil6210_disconnect(wil, evt->bssid, reason_code, true);
 611         mutex_unlock(&wil->mutex);
 612 }
 613
 614 /*
 615  * Firmware reports EAPOL frame using WME event.
 616  * Reconstruct Ethernet frame and deliver it via normal Rx
 617  */
 618 static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id,
 619                              void *d, int len)
 620 {
 621         struct net_device *ndev = wil_to_ndev(wil);
 622         struct wmi_eapol_rx_event *evt = d;
 623         u16 eapol_len = le16_to_cpu(evt->eapol_len);
 624         int sz = eapol_len + ETH_HLEN;
 625         struct sk_buff *skb;
 626         struct ethhdr *eth;
 627         int cid;
 628         struct wil_net_stats *stats = NULL;
 629
 630         wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len,
 631                     evt->src_mac);
 632
 633         cid = wil_find_cid(wil, evt->src_mac);
 634         if (cid >= 0)
 635                 stats = &wil->sta[cid].stats;
 636
 637         if (eapol_len > 196) { /* TODO: revisit size limit */
 638                 wil_err(wil, "EAPOL too large\n");
 639                 return;
 640         }
 641
 642         skb = alloc_skb(sz, GFP_KERNEL);
 643         if (!skb) {
 644                 wil_err(wil, "Failed to allocate skb\n");
 645                 return;
 646         }
 647
 648         eth = (struct ethhdr *)skb_put(skb, ETH_HLEN);
 649         ether_addr_copy(eth->h_dest, ndev->dev_addr);
 650         ether_addr_copy(eth->h_source, evt->src_mac);
 651         eth->h_proto = cpu_to_be16(ETH_P_PAE);
 652         memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len);
 653         skb->protocol = eth_type_trans(skb, ndev);
 654         if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) {
 655                 ndev->stats.rx_packets++;
 656                 ndev->stats.rx_bytes += sz;
 657                 if (stats) {
 658                         stats->rx_packets++;
 659                         stats->rx_bytes += sz;
 660                 }
 661         } else {
 662                 ndev->stats.rx_dropped++;
 663                 if (stats)
 664                         stats->rx_dropped++;
 665         }
 666 }
 667
 668 static void wmi_evt_vring_en(struct wil6210_priv *wil, int id, void *d, int len)
 669 {
 670         struct wmi_vring_en_event *evt = d;
 671         u8 vri = evt->vring_index;
 672
 673         wil_dbg_wmi(wil, "Enable vring %d\n", vri);
 674
 675         if (vri >= ARRAY_SIZE(wil->vring_tx)) {
 676                 wil_err(wil, "Enable for invalid vring %d\n", vri);
 677                 return;
 678         }
 679         wil->vring_tx_data[vri].dot1x_open = true;
 680         if (vri == wil->bcast_vring) /* no BA for bcast */
 681                 return;
 682         if (agg_wsize >= 0)
 683                 wil_addba_tx_request(wil, vri, agg_wsize);
 684 }
 685
 686 static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d,
 687                               int len)
 688 {
 689         struct wmi_ba_status_event *evt = d;
 690         struct vring_tx_data *txdata;
 691
 692         wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d AMSDU%s\n",
 693                     evt->ringid,
 694                     evt->status == WMI_BA_AGREED ? "OK" : "N/A",
 695                     evt->agg_wsize, __le16_to_cpu(evt->ba_timeout),
 696                     evt->amsdu ? "+" : "-");
 697
 698         if (evt->ringid >= WIL6210_MAX_TX_RINGS) {
 699                 wil_err(wil, "invalid ring id %d\n", evt->ringid);
 700                 return;
 701         }
 702
 703         if (evt->status != WMI_BA_AGREED) {
 704                 evt->ba_timeout = 0;
 705                 evt->agg_wsize = 0;
 706                 evt->amsdu = 0;
 707         }
 708
 709         txdata = &wil->vring_tx_data[evt->ringid];
 710
 711         txdata->agg_timeout = le16_to_cpu(evt->ba_timeout);
 712         txdata->agg_wsize = evt->agg_wsize;
 713         txdata->agg_amsdu = evt->amsdu;
 714         txdata->addba_in_progress = false;
 715 }
 716
 717 static void wmi_evt_addba_rx_req(struct wil6210_priv *wil, int id, void *d,
 718                                  int len)
 719 {
 720         struct wmi_rcp_addba_req_event *evt = d;
 721
 722         wil_addba_rx_request(wil, evt->cidxtid, evt->dialog_token,
 723                              evt->ba_param_set, evt->ba_timeout,
 724                              evt->ba_seq_ctrl);
 725 }
 726
 727 static void wmi_evt_delba(struct wil6210_priv *wil, int id, void *d, int len)
 728 __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
 729 {
 730         struct wmi_delba_event *evt = d;
 731         u8 cid, tid;
 732         u16 reason = __le16_to_cpu(evt->reason);
 733         struct wil_sta_info *sta;
 734         struct wil_tid_ampdu_rx *r;
 735
 736         might_sleep();
 737         parse_cidxtid(evt->cidxtid, &cid, &tid);
 738         wil_dbg_wmi(wil, "DELBA CID %d TID %d from %s reason %d\n",
 739                     cid, tid,
 740                     evt->from_initiator ? "originator" : "recipient",
 741                     reason);
 742         if (!evt->from_initiator) {
 743                 int i;
 744                 /* find Tx vring it belongs to */
 745                 for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) {
 746                         if ((wil->vring2cid_tid[i][0] == cid) &&
 747                             (wil->vring2cid_tid[i][1] == tid)) {
 748                                 struct vring_tx_data *txdata =
 749                                         &wil->vring_tx_data[i];
 750
 751                                 wil_dbg_wmi(wil, "DELBA Tx vring %d\n", i);
 752                                 txdata->agg_timeout = 0;
 753                                 txdata->agg_wsize = 0;
 754                                 txdata->addba_in_progress = false;
 755
 756                                 break; /* max. 1 matching ring */
 757                         }
 758                 }
 759                 if (i >= ARRAY_SIZE(wil->vring2cid_tid))
 760                         wil_err(wil, "DELBA: unable to find Tx vring\n");
 761                 return;
 762         }
 763
 764         sta = &wil->sta[cid];
 765
 766         spin_lock_bh(&sta->tid_rx_lock);
 767
 768         r = sta->tid_rx[tid];
 769         sta->tid_rx[tid] = NULL;
 770         wil_tid_ampdu_rx_free(wil, r);
 771
 772         spin_unlock_bh(&sta->tid_rx_lock);
 773 }
 774
 775 /**
 776  * Some events are ignored for purpose; and need not be interpreted as
 777  * "unhandled events"
 778  */
 779 static void wmi_evt_ignore(struct wil6210_priv *wil, int id, void *d, int len)
 780 {
 781         wil_dbg_wmi(wil, "Ignore event 0x%04x len %d\n", id, len);
 782 }
 783
 784 static const struct {
 785         int eventid;
 786         void (*handler)(struct wil6210_priv *wil, int eventid,
 787                         void *data, int data_len);
 788 } wmi_evt_handlers[] = {
 789         {WMI_READY_EVENTID,             wmi_evt_ready},
 790         {WMI_FW_READY_EVENTID,                  wmi_evt_ignore},
 791         {WMI_RX_MGMT_PACKET_EVENTID,    wmi_evt_rx_mgmt},
 792         {WMI_TX_MGMT_PACKET_EVENTID,            wmi_evt_tx_mgmt},
 793         {WMI_SCAN_COMPLETE_EVENTID,     wmi_evt_scan_complete},
 794         {WMI_CONNECT_EVENTID,           wmi_evt_connect},
 795         {WMI_DISCONNECT_EVENTID,        wmi_evt_disconnect},
 796         {WMI_EAPOL_RX_EVENTID,          wmi_evt_eapol_rx},
 797         {WMI_BA_STATUS_EVENTID,         wmi_evt_ba_status},
 798         {WMI_RCP_ADDBA_REQ_EVENTID,     wmi_evt_addba_rx_req},
 799         {WMI_DELBA_EVENTID,             wmi_evt_delba},
 800         {WMI_VRING_EN_EVENTID,          wmi_evt_vring_en},
 801         {WMI_DATA_PORT_OPEN_EVENTID,            wmi_evt_ignore},
 802 };
 803
 804 /*
 805  * Run in IRQ context
 806  * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev
 807  * that will be eventually handled by the @wmi_event_worker in the thread
 808  * context of thread "wil6210_wmi"
 809  */
 810 void wmi_recv_cmd(struct wil6210_priv *wil)
 811 {
 812         struct wil6210_mbox_ring_desc d_tail;
 813         struct wil6210_mbox_hdr hdr;
 814         struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx;
 815         struct pending_wmi_event *evt;
 816         u8 *cmd;
 817         void __iomem *src;
 818         ulong flags;
 819         unsigned n;
 820         unsigned int num_immed_reply = 0;
 821
 822         if (!test_bit(wil_status_mbox_ready, wil->status)) {
 823                 wil_err(wil, "Reset in progress. Cannot handle WMI event\n");
 824                 return;
 825         }
 826
 827         for (n = 0;; n++) {
 828                 u16 len;
 829                 bool q;
 830                 bool immed_reply = false;
 831
 832                 r->head = wil_r(wil, RGF_MBOX +
 833                                 offsetof(struct wil6210_mbox_ctl, rx.head));
 834                 if (r->tail == r->head)
 835                         break;
 836
 837                 wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n",
 838                             r->head, r->tail);
 839                 /* read cmd descriptor from tail */
 840                 wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail),
 841                                      sizeof(struct wil6210_mbox_ring_desc));
 842                 if (d_tail.sync == 0) {
 843                         wil_err(wil, "Mbox evt not owned by FW?\n");
 844                         break;
 845                 }
 846
 847                 /* read cmd header from descriptor */
 848                 if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) {
 849                         wil_err(wil, "Mbox evt at 0x%08x?\n",
 850                                 le32_to_cpu(d_tail.addr));
 851                         break;
 852                 }
 853                 len = le16_to_cpu(hdr.len);
 854                 wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n",
 855                             le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
 856                             hdr.flags);
 857
 858                 /* read cmd buffer from descriptor */
 859                 src = wmi_buffer(wil, d_tail.addr) +
 860                       sizeof(struct wil6210_mbox_hdr);
 861                 evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event,
 862                                              event.wmi) + len, 4),
 863                               GFP_KERNEL);
 864                 if (!evt)
 865                         break;
 866
 867                 evt->event.hdr = hdr;
 868                 cmd = (void *)&evt->event.wmi;
 869                 wil_memcpy_fromio_32(cmd, src, len);
 870                 /* mark entry as empty */
 871                 wil_w(wil, r->tail +
 872                       offsetof(struct wil6210_mbox_ring_desc, sync), 0);
 873                 /* indicate */
 874                 if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
 875                     (len >= sizeof(struct wmi_cmd_hdr))) {
 876                         struct wmi_cmd_hdr *wmi = &evt->event.wmi;
 877                         u16 id = le16_to_cpu(wmi->command_id);
 878                         u32 tstamp = le32_to_cpu(wmi->fw_timestamp);
 879                         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 880                         if (wil->reply_id && wil->reply_id == id) {
 881                                 if (wil->reply_buf) {
 882                                         memcpy(wil->reply_buf, wmi,
 883                                                min(len, wil->reply_size));
 884                                         immed_reply = true;
 885                                 }
 886                         }
 887                         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 888
 889                         wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n",
 890                                     id, wmi->mid, tstamp);
 891                         trace_wil6210_wmi_event(wmi, &wmi[1],
 892                                                 len - sizeof(*wmi));
 893                 }
 894                 wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1,
 895                                  &evt->event.hdr, sizeof(hdr) + len, true);
 896
 897                 /* advance tail */
 898                 r->tail = r->base + ((r->tail - r->base +
 899                           sizeof(struct wil6210_mbox_ring_desc)) % r->size);
 900                 wil_w(wil, RGF_MBOX +
 901                       offsetof(struct wil6210_mbox_ctl, rx.tail), r->tail);
 902
 903                 if (immed_reply) {
 904                         wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
 905                                     __func__, wil->reply_id);
 906                         kfree(evt);
 907                         num_immed_reply++;
 908                         complete(&wil->wmi_call);
 909                 } else {
 910                         /* add to the pending list */
 911                         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
 912                         list_add_tail(&evt->list, &wil->pending_wmi_ev);
 913                         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
 914                         q = queue_work(wil->wmi_wq, &wil->wmi_event_worker);
 915                         wil_dbg_wmi(wil, "queue_work -> %d\n", q);
 916                 }
 917         }
 918         /* normally, 1 event per IRQ should be processed */
 919         wil_dbg_wmi(wil, "%s -> %d events queued, %d completed\n", __func__,
 920                     n - num_immed_reply, num_immed_reply);
 921 }
 922
 923 int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len,
 924              u16 reply_id, void *reply, u8 reply_size, int to_msec)
 925 {
 926         int rc;
 927         unsigned long remain;
 928
 929         mutex_lock(&wil->wmi_mutex);
 930
 931         spin_lock(&wil->wmi_ev_lock);
 932         wil->reply_id = reply_id;
 933         wil->reply_buf = reply;
 934         wil->reply_size = reply_size;
 935         spin_unlock(&wil->wmi_ev_lock);
 936
 937         rc = __wmi_send(wil, cmdid, buf, len);
 938         if (rc)
 939                 goto out;
 940
 941         remain = wait_for_completion_timeout(&wil->wmi_call,
 942                                              msecs_to_jiffies(to_msec));
 943         if (0 == remain) {
 944                 wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n",
 945                         cmdid, reply_id, to_msec);
 946                 rc = -ETIME;
 947         } else {
 948                 wil_dbg_wmi(wil,
 949                             "wmi_call(0x%04x->0x%04x) completed in %d msec\n",
 950                             cmdid, reply_id,
 951                             to_msec - jiffies_to_msecs(remain));
 952         }
 953
 954 out:
 955         spin_lock(&wil->wmi_ev_lock);
 956         wil->reply_id = 0;
 957         wil->reply_buf = NULL;
 958         wil->reply_size = 0;
 959         spin_unlock(&wil->wmi_ev_lock);
 960
 961         mutex_unlock(&wil->wmi_mutex);
 962
 963         return rc;
 964 }
 965
 966 int wmi_echo(struct wil6210_priv *wil)
 967 {
 968         struct wmi_echo_cmd cmd = {
 969                 .value = cpu_to_le32(0x12345678),
 970         };
 971
 972         return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd),
 973                         WMI_ECHO_RSP_EVENTID, NULL, 0, 50);
 974 }
 975
 976 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr)
 977 {
 978         struct wmi_set_mac_address_cmd cmd;
 979
 980         ether_addr_copy(cmd.mac, addr);
 981
 982         wil_dbg_wmi(wil, "Set MAC %pM\n", addr);
 983
 984         return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd));
 985 }
 986
 987 int wmi_led_cfg(struct wil6210_priv *wil, bool enable)
 988 {
 989         int rc = 0;
 990         struct wmi_led_cfg_cmd cmd = {
 991                 .led_mode = enable,
 992                 .id = led_id,
 993                 .slow_blink_cfg.blink_on =
 994                         cpu_to_le32(led_blink_time[WIL_LED_TIME_SLOW].on_ms),
 995                 .slow_blink_cfg.blink_off =
 996                         cpu_to_le32(led_blink_time[WIL_LED_TIME_SLOW].off_ms),
 997                 .medium_blink_cfg.blink_on =
 998                         cpu_to_le32(led_blink_time[WIL_LED_TIME_MED].on_ms),
 999                 .medium_blink_cfg.blink_off =
1000                         cpu_to_le32(led_blink_time[WIL_LED_TIME_MED].off_ms),
1001                 .fast_blink_cfg.blink_on =
1002                         cpu_to_le32(led_blink_time[WIL_LED_TIME_FAST].on_ms),
1003                 .fast_blink_cfg.blink_off =
1004                         cpu_to_le32(led_blink_time[WIL_LED_TIME_FAST].off_ms),
1005                 .led_polarity = led_polarity,
1006         };
1007         struct {
1008                 struct wmi_cmd_hdr wmi;
1009                 struct wmi_led_cfg_done_event evt;
1010         } __packed reply;
1011
1012         if (led_id == WIL_LED_INVALID_ID)
1013                 goto out;
1014
1015         if (led_id > WIL_LED_MAX_ID) {
1016                 wil_err(wil, "Invalid led id %d\n", led_id);
1017                 rc = -EINVAL;
1018                 goto out;
1019         }
1020
1021         wil_dbg_wmi(wil,
1022                     "%s led %d\n",
1023                     enable ? "enabling" : "disabling", led_id);
1024
1025         rc = wmi_call(wil, WMI_LED_CFG_CMDID, &cmd, sizeof(cmd),
1026                       WMI_LED_CFG_DONE_EVENTID, &reply, sizeof(reply),
1027                       100);
1028         if (rc)
1029                 goto out;
1030
1031         if (reply.evt.status) {
1032                 wil_err(wil, "led %d cfg failed with status %d\n",
1033                         led_id, le32_to_cpu(reply.evt.status));
1034                 rc = -EINVAL;
1035         }
1036
1037 out:
1038         return rc;
1039 }
1040
1041 int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype,
1042                   u8 chan, u8 hidden_ssid, u8 is_go)
1043 {
1044         int rc;
1045
1046         struct wmi_pcp_start_cmd cmd = {
1047                 .bcon_interval = cpu_to_le16(bi),
1048                 .network_type = wmi_nettype,
1049                 .disable_sec_offload = 1,
1050                 .channel = chan - 1,
1051                 .pcp_max_assoc_sta = max_assoc_sta,
1052                 .hidden_ssid = hidden_ssid,
1053                 .is_go = is_go,
1054         };
1055         struct {
1056                 struct wmi_cmd_hdr wmi;
1057                 struct wmi_pcp_started_event evt;
1058         } __packed reply;
1059
1060         if (!wil->privacy)
1061                 cmd.disable_sec = 1;
1062
1063         if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
1064             (cmd.pcp_max_assoc_sta <= 0)) {
1065                 wil_info(wil,
1066                          "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
1067                          max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
1068                 cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
1069         }
1070
1071         /*
1072          * Processing time may be huge, in case of secure AP it takes about
1073          * 3500ms for FW to start AP
1074          */
1075         rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd),
1076                       WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000);
1077         if (rc)
1078                 return rc;
1079
1080         if (reply.evt.status != WMI_FW_STATUS_SUCCESS)
1081                 rc = -EINVAL;
1082
1083         if (wmi_nettype != WMI_NETTYPE_P2P)
1084                 /* Don't fail due to error in the led configuration */
1085                 wmi_led_cfg(wil, true);
1086
1087         return rc;
1088 }
1089
1090 int wmi_pcp_stop(struct wil6210_priv *wil)
1091 {
1092         int rc;
1093
1094         rc = wmi_led_cfg(wil, false);
1095         if (rc)
1096                 return rc;
1097
1098         return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0,
1099                         WMI_PCP_STOPPED_EVENTID, NULL, 0, 20);
1100 }
1101
1102 int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid)
1103 {
1104         struct wmi_set_ssid_cmd cmd = {
1105                 .ssid_len = cpu_to_le32(ssid_len),
1106         };
1107
1108         if (ssid_len > sizeof(cmd.ssid))
1109                 return -EINVAL;
1110
1111         memcpy(cmd.ssid, ssid, ssid_len);
1112
1113         return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd));
1114 }
1115
1116 int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid)
1117 {
1118         int rc;
1119         struct {
1120                 struct wmi_cmd_hdr wmi;
1121                 struct wmi_set_ssid_cmd cmd;
1122         } __packed reply;
1123         int len; /* reply.cmd.ssid_len in CPU order */
1124
1125         rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID,
1126                       &reply, sizeof(reply), 20);
1127         if (rc)
1128                 return rc;
1129
1130         len = le32_to_cpu(reply.cmd.ssid_len);
1131         if (len > sizeof(reply.cmd.ssid))
1132                 return -EINVAL;
1133
1134         *ssid_len = len;
1135         memcpy(ssid, reply.cmd.ssid, len);
1136
1137         return 0;
1138 }
1139
1140 int wmi_set_channel(struct wil6210_priv *wil, int channel)
1141 {
1142         struct wmi_set_pcp_channel_cmd cmd = {
1143                 .channel = channel - 1,
1144         };
1145
1146         return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd));
1147 }
1148
1149 int wmi_get_channel(struct wil6210_priv *wil, int *channel)
1150 {
1151         int rc;
1152         struct {
1153                 struct wmi_cmd_hdr wmi;
1154                 struct wmi_set_pcp_channel_cmd cmd;
1155         } __packed reply;
1156
1157         rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0,
1158                       WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20);
1159         if (rc)
1160                 return rc;
1161
1162         if (reply.cmd.channel > 3)
1163                 return -EINVAL;
1164
1165         *channel = reply.cmd.channel + 1;
1166
1167         return 0;
1168 }
1169
1170 int wmi_p2p_cfg(struct wil6210_priv *wil, int channel, int bi)
1171 {
1172         int rc;
1173         struct wmi_p2p_cfg_cmd cmd = {
1174                 .discovery_mode = WMI_DISCOVERY_MODE_PEER2PEER,
1175                 .bcon_interval = cpu_to_le16(bi),
1176                 .channel = channel - 1,
1177         };
1178         struct {
1179                 struct wmi_cmd_hdr wmi;
1180                 struct wmi_p2p_cfg_done_event evt;
1181         } __packed reply;
1182
1183         wil_dbg_wmi(wil, "sending WMI_P2P_CFG_CMDID\n");
1184
1185         rc = wmi_call(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd),
1186                       WMI_P2P_CFG_DONE_EVENTID, &reply, sizeof(reply), 300);
1187         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1188                 wil_err(wil, "P2P_CFG failed. status %d\n", reply.evt.status);
1189                 rc = -EINVAL;
1190         }
1191
1192         return rc;
1193 }
1194
1195 int wmi_start_listen(struct wil6210_priv *wil)
1196 {
1197         int rc;
1198         struct {
1199                 struct wmi_cmd_hdr wmi;
1200                 struct wmi_listen_started_event evt;
1201         } __packed reply;
1202
1203         wil_dbg_wmi(wil, "sending WMI_START_LISTEN_CMDID\n");
1204
1205         rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1206                       WMI_LISTEN_STARTED_EVENTID, &reply, sizeof(reply), 300);
1207         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1208                 wil_err(wil, "device failed to start listen. status %d\n",
1209                         reply.evt.status);
1210                 rc = -EINVAL;
1211         }
1212
1213         return rc;
1214 }
1215
1216 int wmi_start_search(struct wil6210_priv *wil)
1217 {
1218         int rc;
1219         struct {
1220                 struct wmi_cmd_hdr wmi;
1221                 struct wmi_search_started_event evt;
1222         } __packed reply;
1223
1224         wil_dbg_wmi(wil, "sending WMI_START_SEARCH_CMDID\n");
1225
1226         rc = wmi_call(wil, WMI_START_SEARCH_CMDID, NULL, 0,
1227                       WMI_SEARCH_STARTED_EVENTID, &reply, sizeof(reply), 300);
1228         if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) {
1229                 wil_err(wil, "device failed to start search. status %d\n",
1230                         reply.evt.status);
1231                 rc = -EINVAL;
1232         }
1233
1234         return rc;
1235 }
1236
1237 int wmi_stop_discovery(struct wil6210_priv *wil)
1238 {
1239         int rc;
1240
1241         wil_dbg_wmi(wil, "sending WMI_DISCOVERY_STOP_CMDID\n");
1242
1243         rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1244                       WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 100);
1245
1246         if (rc)
1247                 wil_err(wil, "Failed to stop discovery\n");
1248
1249         return rc;
1250 }
1251
1252 int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index,
1253                        const void *mac_addr, int key_usage)
1254 {
1255         struct wmi_delete_cipher_key_cmd cmd = {
1256                 .key_index = key_index,
1257         };
1258
1259         if (mac_addr)
1260                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1261
1262         return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1263 }
1264
1265 int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index,
1266                        const void *mac_addr, int key_len, const void *key,
1267                        int key_usage)
1268 {
1269         struct wmi_add_cipher_key_cmd cmd = {
1270                 .key_index = key_index,
1271                 .key_usage = key_usage,
1272                 .key_len = key_len,
1273         };
1274
1275         if (!key || (key_len > sizeof(cmd.key)))
1276                 return -EINVAL;
1277
1278         memcpy(cmd.key, key, key_len);
1279         if (mac_addr)
1280                 memcpy(cmd.mac, mac_addr, WMI_MAC_LEN);
1281
1282         return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd));
1283 }
1284
1285 int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie)
1286 {
1287         static const char *const names[] = {
1288                 [WMI_FRAME_BEACON]      = "BEACON",
1289                 [WMI_FRAME_PROBE_REQ]   = "PROBE_REQ",
1290                 [WMI_FRAME_PROBE_RESP]  = "WMI_FRAME_PROBE_RESP",
1291                 [WMI_FRAME_ASSOC_REQ]   = "WMI_FRAME_ASSOC_REQ",
1292                 [WMI_FRAME_ASSOC_RESP]  = "WMI_FRAME_ASSOC_RESP",
1293         };
1294         int rc;
1295         u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len;
1296         struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL);
1297
1298         if (!cmd) {
1299                 rc = -ENOMEM;
1300                 goto out;
1301         }
1302         if (!ie)
1303                 ie_len = 0;
1304
1305         cmd->mgmt_frm_type = type;
1306         /* BUG: FW API define ieLen as u8. Will fix FW */
1307         cmd->ie_len = cpu_to_le16(ie_len);
1308         memcpy(cmd->ie_info, ie, ie_len);
1309         rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len);
1310         kfree(cmd);
1311 out:
1312         if (rc) {
1313                 const char *name = type < ARRAY_SIZE(names) ?
1314                                    names[type] : "??";
1315                 wil_err(wil, "set_ie(%d %s) failed : %d\n", type, name, rc);
1316         }
1317
1318         return rc;
1319 }
1320
1321 /**
1322  * wmi_rxon - turn radio on/off
1323  * @on:         turn on if true, off otherwise
1324  *
1325  * Only switch radio. Channel should be set separately.
1326  * No timeout for rxon - radio turned on forever unless some other call
1327  * turns it off
1328  */
1329 int wmi_rxon(struct wil6210_priv *wil, bool on)
1330 {
1331         int rc;
1332         struct {
1333                 struct wmi_cmd_hdr wmi;
1334                 struct wmi_listen_started_event evt;
1335         } __packed reply;
1336
1337         wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off");
1338
1339         if (on) {
1340                 rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0,
1341                               WMI_LISTEN_STARTED_EVENTID,
1342                               &reply, sizeof(reply), 100);
1343                 if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS))
1344                         rc = -EINVAL;
1345         } else {
1346                 rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0,
1347                               WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20);
1348         }
1349
1350         return rc;
1351 }
1352
1353 int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring)
1354 {
1355         struct wireless_dev *wdev = wil->wdev;
1356         struct net_device *ndev = wil_to_ndev(wil);
1357         struct wmi_cfg_rx_chain_cmd cmd = {
1358                 .action = WMI_RX_CHAIN_ADD,
1359                 .rx_sw_ring = {
1360                         .max_mpdu_size = cpu_to_le16(wil_mtu2macbuf(mtu_max)),
1361                         .ring_mem_base = cpu_to_le64(vring->pa),
1362                         .ring_size = cpu_to_le16(vring->size),
1363                 },
1364                 .mid = 0, /* TODO - what is it? */
1365                 .decap_trans_type = WMI_DECAP_TYPE_802_3,
1366                 .reorder_type = WMI_RX_SW_REORDER,
1367                 .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh),
1368         };
1369         struct {
1370                 struct wmi_cmd_hdr wmi;
1371                 struct wmi_cfg_rx_chain_done_event evt;
1372         } __packed evt;
1373         int rc;
1374
1375         if (wdev->iftype == NL80211_IFTYPE_MONITOR) {
1376                 struct ieee80211_channel *ch = wdev->preset_chandef.chan;
1377
1378                 cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON);
1379                 if (ch)
1380                         cmd.sniffer_cfg.channel = ch->hw_value - 1;
1381                 cmd.sniffer_cfg.phy_info_mode =
1382                         cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP);
1383                 cmd.sniffer_cfg.phy_support =
1384                         cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL)
1385                                     ? WMI_SNIFFER_CP : WMI_SNIFFER_BOTH_PHYS);
1386         } else {
1387                 /* Initialize offload (in non-sniffer mode).
1388                  * Linux IP stack always calculates IP checksum
1389                  * HW always calculate TCP/UDP checksum
1390                  */
1391                 cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS);
1392         }
1393
1394         if (rx_align_2)
1395                 cmd.l2_802_3_offload_ctrl |=
1396                                 L2_802_3_OFFLOAD_CTRL_SNAP_KEEP_MSK;
1397
1398         /* typical time for secure PCP is 840ms */
1399         rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd),
1400                       WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000);
1401         if (rc)
1402                 return rc;
1403
1404         vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr);
1405
1406         wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n",
1407                      le32_to_cpu(evt.evt.status), vring->hwtail);
1408
1409         if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS)
1410                 rc = -EINVAL;
1411
1412         return rc;
1413 }
1414
1415 int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf)
1416 {
1417         int rc;
1418         struct wmi_temp_sense_cmd cmd = {
1419                 .measure_baseband_en = cpu_to_le32(!!t_bb),
1420                 .measure_rf_en = cpu_to_le32(!!t_rf),
1421                 .measure_mode = cpu_to_le32(TEMPERATURE_MEASURE_NOW),
1422         };
1423         struct {
1424                 struct wmi_cmd_hdr wmi;
1425                 struct wmi_temp_sense_done_event evt;
1426         } __packed reply;
1427
1428         rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd),
1429                       WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100);
1430         if (rc)
1431                 return rc;
1432
1433         if (t_bb)
1434                 *t_bb = le32_to_cpu(reply.evt.baseband_t1000);
1435         if (t_rf)
1436                 *t_rf = le32_to_cpu(reply.evt.rf_t1000);
1437
1438         return 0;
1439 }
1440
1441 int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason,
1442                        bool full_disconnect)
1443 {
1444         int rc;
1445         u16 reason_code;
1446         struct wmi_disconnect_sta_cmd cmd = {
1447                 .disconnect_reason = cpu_to_le16(reason),
1448         };
1449         struct {
1450                 struct wmi_cmd_hdr wmi;
1451                 struct wmi_disconnect_event evt;
1452         } __packed reply;
1453
1454         ether_addr_copy(cmd.dst_mac, mac);
1455
1456         wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason);
1457
1458         rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd),
1459                       WMI_DISCONNECT_EVENTID, &reply, sizeof(reply), 1000);
1460         /* failure to disconnect in reasonable time treated as FW error */
1461         if (rc) {
1462                 wil_fw_error_recovery(wil);
1463                 return rc;
1464         }
1465
1466         if (full_disconnect) {
1467                 /* call event handler manually after processing wmi_call,
1468                  * to avoid deadlock - disconnect event handler acquires
1469                  * wil->mutex while it is already held here
1470                  */
1471                 reason_code = le16_to_cpu(reply.evt.protocol_reason_status);
1472
1473                 wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n",
1474                             reply.evt.bssid, reason_code,
1475                             reply.evt.disconnect_reason);
1476
1477                 wil->sinfo_gen++;
1478                 wil6210_disconnect(wil, reply.evt.bssid, reason_code, true);
1479         }
1480         return 0;
1481 }
1482
1483 int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout)
1484 {
1485         struct wmi_vring_ba_en_cmd cmd = {
1486                 .ringid = ringid,
1487                 .agg_max_wsize = size,
1488                 .ba_timeout = cpu_to_le16(timeout),
1489                 .amsdu = 0,
1490         };
1491
1492         wil_dbg_wmi(wil, "%s(ring %d size %d timeout %d)\n", __func__,
1493                     ringid, size, timeout);
1494
1495         return wmi_send(wil, WMI_VRING_BA_EN_CMDID, &cmd, sizeof(cmd));
1496 }
1497
1498 int wmi_delba_tx(struct wil6210_priv *wil, u8 ringid, u16 reason)
1499 {
1500         struct wmi_vring_ba_dis_cmd cmd = {
1501                 .ringid = ringid,
1502                 .reason = cpu_to_le16(reason),
1503         };
1504
1505         wil_dbg_wmi(wil, "%s(ring %d reason %d)\n", __func__,
1506                     ringid, reason);
1507
1508         return wmi_send(wil, WMI_VRING_BA_DIS_CMDID, &cmd, sizeof(cmd));
1509 }
1510
1511 int wmi_delba_rx(struct wil6210_priv *wil, u8 cidxtid, u16 reason)
1512 {
1513         struct wmi_rcp_delba_cmd cmd = {
1514                 .cidxtid = cidxtid,
1515                 .reason = cpu_to_le16(reason),
1516         };
1517
1518         wil_dbg_wmi(wil, "%s(CID %d TID %d reason %d)\n", __func__,
1519                     cidxtid & 0xf, (cidxtid >> 4) & 0xf, reason);
1520
1521         return wmi_send(wil, WMI_RCP_DELBA_CMDID, &cmd, sizeof(cmd));
1522 }
1523
1524 int wmi_addba_rx_resp(struct wil6210_priv *wil, u8 cid, u8 tid, u8 token,
1525                       u16 status, bool amsdu, u16 agg_wsize, u16 timeout)
1526 {
1527         int rc;
1528         struct wmi_rcp_addba_resp_cmd cmd = {
1529                 .cidxtid = mk_cidxtid(cid, tid),
1530                 .dialog_token = token,
1531                 .status_code = cpu_to_le16(status),
1532                 /* bit 0: A-MSDU supported
1533                  * bit 1: policy (should be 0 for us)
1534                  * bits 2..5: TID
1535                  * bits 6..15: buffer size
1536                  */
1537                 .ba_param_set = cpu_to_le16((amsdu ? 1 : 0) | (tid << 2) |
1538                                             (agg_wsize << 6)),
1539                 .ba_timeout = cpu_to_le16(timeout),
1540         };
1541         struct {
1542                 struct wmi_cmd_hdr wmi;
1543                 struct wmi_rcp_addba_resp_sent_event evt;
1544         } __packed reply;
1545
1546         wil_dbg_wmi(wil,
1547                     "ADDBA response for CID %d TID %d size %d timeout %d status %d AMSDU%s\n",
1548                     cid, tid, agg_wsize, timeout, status, amsdu ? "+" : "-");
1549
1550         rc = wmi_call(wil, WMI_RCP_ADDBA_RESP_CMDID, &cmd, sizeof(cmd),
1551                       WMI_RCP_ADDBA_RESP_SENT_EVENTID, &reply, sizeof(reply),
1552                       100);
1553         if (rc)
1554                 return rc;
1555
1556         if (reply.evt.status) {
1557                 wil_err(wil, "ADDBA response failed with status %d\n",
1558                         le16_to_cpu(reply.evt.status));
1559                 rc = -EINVAL;
1560         }
1561
1562         return rc;
1563 }
1564
1565 void wmi_event_flush(struct wil6210_priv *wil)
1566 {
1567         struct pending_wmi_event *evt, *t;
1568
1569         wil_dbg_wmi(wil, "%s()\n", __func__);
1570
1571         list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) {
1572                 list_del(&evt->list);
1573                 kfree(evt);
1574         }
1575 }
1576
1577 static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id,
1578                                  void *d, int len)
1579 {
1580         uint i;
1581
1582         for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) {
1583                 if (wmi_evt_handlers[i].eventid == id) {
1584                         wmi_evt_handlers[i].handler(wil, id, d, len);
1585                         return true;
1586                 }
1587         }
1588
1589         return false;
1590 }
1591
1592 static void wmi_event_handle(struct wil6210_priv *wil,
1593                              struct wil6210_mbox_hdr *hdr)
1594 {
1595         u16 len = le16_to_cpu(hdr->len);
1596
1597         if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) &&
1598             (len >= sizeof(struct wmi_cmd_hdr))) {
1599                 struct wmi_cmd_hdr *wmi = (void *)(&hdr[1]);
1600                 void *evt_data = (void *)(&wmi[1]);
1601                 u16 id = le16_to_cpu(wmi->command_id);
1602
1603                 wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n",
1604                             id, wil->reply_id);
1605                 /* check if someone waits for this event */
1606                 if (wil->reply_id && wil->reply_id == id) {
1607                         WARN_ON(wil->reply_buf);
1608                         wmi_evt_call_handler(wil, id, evt_data,
1609                                              len - sizeof(*wmi));
1610                         wil_dbg_wmi(wil, "%s: Complete WMI 0x%04x\n",
1611                                     __func__, id);
1612                         complete(&wil->wmi_call);
1613                         return;
1614                 }
1615                 /* unsolicited event */
1616                 /* search for handler */
1617                 if (!wmi_evt_call_handler(wil, id, evt_data,
1618                                           len - sizeof(*wmi))) {
1619                         wil_info(wil, "Unhandled event 0x%04x\n", id);
1620                 }
1621         } else {
1622                 wil_err(wil, "Unknown event type\n");
1623                 print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1,
1624                                hdr, sizeof(*hdr) + len, true);
1625         }
1626 }
1627
1628 /*
1629  * Retrieve next WMI event from the pending list
1630  */
1631 static struct list_head *next_wmi_ev(struct wil6210_priv *wil)
1632 {
1633         ulong flags;
1634         struct list_head *ret = NULL;
1635
1636         spin_lock_irqsave(&wil->wmi_ev_lock, flags);
1637
1638         if (!list_empty(&wil->pending_wmi_ev)) {
1639                 ret = wil->pending_wmi_ev.next;
1640                 list_del(ret);
1641         }
1642
1643         spin_unlock_irqrestore(&wil->wmi_ev_lock, flags);
1644
1645         return ret;
1646 }
1647
1648 /*
1649  * Handler for the WMI events
1650  */
1651 void wmi_event_worker(struct work_struct *work)
1652 {
1653         struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
1654                                                  wmi_event_worker);
1655         struct pending_wmi_event *evt;
1656         struct list_head *lh;
1657
1658         wil_dbg_wmi(wil, "Start %s\n", __func__);
1659         while ((lh = next_wmi_ev(wil)) != NULL) {
1660                 evt = list_entry(lh, struct pending_wmi_event, list);
1661                 wmi_event_handle(wil, &evt->event.hdr);
1662                 kfree(evt);
1663         }
1664         wil_dbg_wmi(wil, "Finished %s\n", __func__);
1665 }