drivers/net/wireless/ti/wlcore/cmd.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2009-2010 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/pm_runtime.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/ieee80211.h>
  30 #include <linux/slab.h>
  31
  32 #include "wlcore.h"
  33 #include "debug.h"
  34 #include "io.h"
  35 #include "acx.h"
  36 #include "wl12xx_80211.h"
  37 #include "cmd.h"
  38 #include "event.h"
  39 #include "tx.h"
  40 #include "hw_ops.h"
  41
  42 #define WL1271_CMD_FAST_POLL_COUNT       50
  43 #define WL1271_WAIT_EVENT_FAST_POLL_COUNT 20
  44
  45 /*
  46  * send command to firmware
  47  *
  48  * @wl: wl struct
  49  * @id: command id
  50  * @buf: buffer containing the command, must work with dma
  51  * @len: length of the buffer
  52  * return the cmd status code on success.
  53  */
  54 static int __wlcore_cmd_send(struct wl1271 *wl, u16 id, void *buf,
  55                              size_t len, size_t res_len)
  56 {
  57         struct wl1271_cmd_header *cmd;
  58         unsigned long timeout;
  59         u32 intr;
  60         int ret;
  61         u16 status;
  62         u16 poll_count = 0;
  63
  64         if (unlikely(wl->state == WLCORE_STATE_RESTARTING &&
  65                      id != CMD_STOP_FWLOGGER))
  66                 return -EIO;
  67
  68         if (WARN_ON_ONCE(len < sizeof(*cmd)))
  69                 return -EIO;
  70
  71         cmd = buf;
  72         cmd->id = cpu_to_le16(id);
  73         cmd->status = 0;
  74
  75         WARN_ON(len % 4 != 0);
  76         WARN_ON(test_bit(WL1271_FLAG_IN_ELP, &wl->flags));
  77
  78         ret = wlcore_write(wl, wl->cmd_box_addr, buf, len, false);
  79         if (ret < 0)
  80                 return ret;
  81
  82         /*
  83          * TODO: we just need this because one bit is in a different
  84          * place.  Is there any better way?
  85          */
  86         ret = wl->ops->trigger_cmd(wl, wl->cmd_box_addr, buf, len);
  87         if (ret < 0)
  88                 return ret;
  89
  90         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  91
  92         ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
  93         if (ret < 0)
  94                 return ret;
  95
  96         while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
  97                 if (time_after(jiffies, timeout)) {
  98                         wl1271_error("command complete timeout");
  99                         return -ETIMEDOUT;
 100                 }
 101
 102                 poll_count++;
 103                 if (poll_count < WL1271_CMD_FAST_POLL_COUNT)
 104                         udelay(10);
 105                 else
 106                         msleep(1);
 107
 108                 ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
 109                 if (ret < 0)
 110                         return ret;
 111         }
 112
 113         /* read back the status code of the command */
 114         if (res_len == 0)
 115                 res_len = sizeof(struct wl1271_cmd_header);
 116
 117         ret = wlcore_read(wl, wl->cmd_box_addr, cmd, res_len, false);
 118         if (ret < 0)
 119                 return ret;
 120
 121         status = le16_to_cpu(cmd->status);
 122
 123         ret = wlcore_write_reg(wl, REG_INTERRUPT_ACK,
 124                                WL1271_ACX_INTR_CMD_COMPLETE);
 125         if (ret < 0)
 126                 return ret;
 127
 128         return status;
 129 }
 130
 131 /*
 132  * send command to fw and return cmd status on success
 133  * valid_rets contains a bitmap of allowed error codes
 134  */
 135 static int wlcore_cmd_send_failsafe(struct wl1271 *wl, u16 id, void *buf,
 136                                     size_t len, size_t res_len,
 137                                     unsigned long valid_rets)
 138 {
 139         int ret = __wlcore_cmd_send(wl, id, buf, len, res_len);
 140
 141         if (ret < 0)
 142                 goto fail;
 143
 144         /* success is always a valid status */
 145         valid_rets |= BIT(CMD_STATUS_SUCCESS);
 146
 147         if (ret >= MAX_COMMAND_STATUS ||
 148             !test_bit(ret, &valid_rets)) {
 149                 wl1271_error("command execute failure %d", ret);
 150                 ret = -EIO;
 151                 goto fail;
 152         }
 153         return ret;
 154 fail:
 155         wl12xx_queue_recovery_work(wl);
 156         return ret;
 157 }
 158
 159 /*
 160  * wrapper for wlcore_cmd_send that accept only CMD_STATUS_SUCCESS
 161  * return 0 on success.
 162  */
 163 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
 164                     size_t res_len)
 165 {
 166         int ret = wlcore_cmd_send_failsafe(wl, id, buf, len, res_len, 0);
 167
 168         if (ret < 0)
 169                 return ret;
 170         return 0;
 171 }
 172 EXPORT_SYMBOL_GPL(wl1271_cmd_send);
 173
 174 /*
 175  * Poll the mailbox event field until any of the bits in the mask is set or a
 176  * timeout occurs (WL1271_EVENT_TIMEOUT in msecs)
 177  */
 178 int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 179                                          u32 mask, bool *timeout)
 180 {
 181         u32 *events_vector;
 182         u32 event;
 183         unsigned long timeout_time;
 184         u16 poll_count = 0;
 185         int ret = 0;
 186
 187         *timeout = false;
 188
 189         events_vector = kmalloc(sizeof(*events_vector), GFP_KERNEL | GFP_DMA);
 190         if (!events_vector)
 191                 return -ENOMEM;
 192
 193         timeout_time = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
 194
 195         ret = pm_runtime_get_sync(wl->dev);
 196         if (ret < 0) {
 197                 pm_runtime_put_noidle(wl->dev);
 198                 goto free_vector;
 199         }
 200
 201         do {
 202                 if (time_after(jiffies, timeout_time)) {
 203                         wl1271_debug(DEBUG_CMD, "timeout waiting for event %d",
 204                                      (int)mask);
 205                         *timeout = true;
 206                         goto out;
 207                 }
 208
 209                 poll_count++;
 210                 if (poll_count < WL1271_WAIT_EVENT_FAST_POLL_COUNT)
 211                         usleep_range(50, 51);
 212                 else
 213                         usleep_range(1000, 5000);
 214
 215                 /* read from both event fields */
 216                 ret = wlcore_read(wl, wl->mbox_ptr[0], events_vector,
 217                                   sizeof(*events_vector), false);
 218                 if (ret < 0)
 219                         goto out;
 220
 221                 event = *events_vector & mask;
 222
 223                 ret = wlcore_read(wl, wl->mbox_ptr[1], events_vector,
 224                                   sizeof(*events_vector), false);
 225                 if (ret < 0)
 226                         goto out;
 227
 228                 event |= *events_vector & mask;
 229         } while (!event);
 230
 231 out:
 232         pm_runtime_mark_last_busy(wl->dev);
 233         pm_runtime_put_autosuspend(wl->dev);
 234 free_vector:
 235         kfree(events_vector);
 236         return ret;
 237 }
 238 EXPORT_SYMBOL_GPL(wlcore_cmd_wait_for_event_or_timeout);
 239
 240 int wl12xx_cmd_role_enable(struct wl1271 *wl, u8 *addr, u8 role_type,
 241                            u8 *role_id)
 242 {
 243         struct wl12xx_cmd_role_enable *cmd;
 244         int ret;
 245
 246         wl1271_debug(DEBUG_CMD, "cmd role enable");
 247
 248         if (WARN_ON(*role_id != WL12XX_INVALID_ROLE_ID))
 249                 return -EBUSY;
 250
 251         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 252         if (!cmd) {
 253                 ret = -ENOMEM;
 254                 goto out;
 255         }
 256
 257         /* get role id */
 258         cmd->role_id = find_first_zero_bit(wl->roles_map, WL12XX_MAX_ROLES);
 259         if (cmd->role_id >= WL12XX_MAX_ROLES) {
 260                 ret = -EBUSY;
 261                 goto out_free;
 262         }
 263
 264         memcpy(cmd->mac_address, addr, ETH_ALEN);
 265         cmd->role_type = role_type;
 266
 267         ret = wl1271_cmd_send(wl, CMD_ROLE_ENABLE, cmd, sizeof(*cmd), 0);
 268         if (ret < 0) {
 269                 wl1271_error("failed to initiate cmd role enable");
 270                 goto out_free;
 271         }
 272
 273         __set_bit(cmd->role_id, wl->roles_map);
 274         *role_id = cmd->role_id;
 275
 276 out_free:
 277         kfree(cmd);
 278
 279 out:
 280         return ret;
 281 }
 282
 283 int wl12xx_cmd_role_disable(struct wl1271 *wl, u8 *role_id)
 284 {
 285         struct wl12xx_cmd_role_disable *cmd;
 286         int ret;
 287
 288         wl1271_debug(DEBUG_CMD, "cmd role disable");
 289
 290         if (WARN_ON(*role_id == WL12XX_INVALID_ROLE_ID))
 291                 return -ENOENT;
 292
 293         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 294         if (!cmd) {
 295                 ret = -ENOMEM;
 296                 goto out;
 297         }
 298         cmd->role_id = *role_id;
 299
 300         ret = wl1271_cmd_send(wl, CMD_ROLE_DISABLE, cmd, sizeof(*cmd), 0);
 301         if (ret < 0) {
 302                 wl1271_error("failed to initiate cmd role disable");
 303                 goto out_free;
 304         }
 305
 306         __clear_bit(*role_id, wl->roles_map);
 307         *role_id = WL12XX_INVALID_ROLE_ID;
 308
 309 out_free:
 310         kfree(cmd);
 311
 312 out:
 313         return ret;
 314 }
 315
 316 static int wlcore_get_new_session_id(struct wl1271 *wl, u8 hlid)
 317 {
 318         if (wl->session_ids[hlid] >= SESSION_COUNTER_MAX)
 319                 wl->session_ids[hlid] = 0;
 320
 321         wl->session_ids[hlid]++;
 322
 323         return wl->session_ids[hlid];
 324 }
 325
 326 int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 327 {
 328         unsigned long flags;
 329         u8 link = find_first_zero_bit(wl->links_map, wl->num_links);
 330         if (link >= wl->num_links)
 331                 return -EBUSY;
 332
 333         wl->session_ids[link] = wlcore_get_new_session_id(wl, link);
 334
 335         /* these bits are used by op_tx */
 336         spin_lock_irqsave(&wl->wl_lock, flags);
 337         __set_bit(link, wl->links_map);
 338         __set_bit(link, wlvif->links_map);
 339         spin_unlock_irqrestore(&wl->wl_lock, flags);
 340
 341         /*
 342          * take the last "freed packets" value from the current FW status.
 343          * on recovery, we might not have fw_status yet, and
 344          * tx_lnk_free_pkts will be NULL. check for it.
 345          */
 346         if (wl->fw_status->counters.tx_lnk_free_pkts)
 347                 wl->links[link].prev_freed_pkts =
 348                         wl->fw_status->counters.tx_lnk_free_pkts[link];
 349         wl->links[link].wlvif = wlvif;
 350
 351         /*
 352          * Take saved value for total freed packets from wlvif, in case this is
 353          * recovery/resume
 354          */
 355         if (wlvif->bss_type != BSS_TYPE_AP_BSS)
 356                 wl->links[link].total_freed_pkts = wlvif->total_freed_pkts;
 357
 358         *hlid = link;
 359
 360         wl->active_link_count++;
 361         return 0;
 362 }
 363
 364 void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 365 {
 366         unsigned long flags;
 367
 368         if (*hlid == WL12XX_INVALID_LINK_ID)
 369                 return;
 370
 371         /* these bits are used by op_tx */
 372         spin_lock_irqsave(&wl->wl_lock, flags);
 373         __clear_bit(*hlid, wl->links_map);
 374         __clear_bit(*hlid, wlvif->links_map);
 375         spin_unlock_irqrestore(&wl->wl_lock, flags);
 376
 377         wl->links[*hlid].allocated_pkts = 0;
 378         wl->links[*hlid].prev_freed_pkts = 0;
 379         wl->links[*hlid].ba_bitmap = 0;
 380         eth_zero_addr(wl->links[*hlid].addr);
 381
 382         /*
 383          * At this point op_tx() will not add more packets to the queues. We
 384          * can purge them.
 385          */
 386         wl1271_tx_reset_link_queues(wl, *hlid);
 387         wl->links[*hlid].wlvif = NULL;
 388
 389         if (wlvif->bss_type == BSS_TYPE_AP_BSS &&
 390             *hlid == wlvif->ap.bcast_hlid) {
 391                 u32 sqn_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING;
 392                 /*
 393                  * save the total freed packets in the wlvif, in case this is
 394                  * recovery or suspend
 395                  */
 396                 wlvif->total_freed_pkts = wl->links[*hlid].total_freed_pkts;
 397
 398                 /*
 399                  * increment the initial seq number on recovery to account for
 400                  * transmitted packets that we haven't yet got in the FW status
 401                  */
 402                 if (wlvif->encryption_type == KEY_GEM)
 403                         sqn_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING_GEM;
 404
 405                 if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
 406                         wlvif->total_freed_pkts += sqn_padding;
 407         }
 408
 409         wl->links[*hlid].total_freed_pkts = 0;
 410
 411         *hlid = WL12XX_INVALID_LINK_ID;
 412         wl->active_link_count--;
 413         WARN_ON_ONCE(wl->active_link_count < 0);
 414 }
 415
 416 u8 wlcore_get_native_channel_type(u8 nl_channel_type)
 417 {
 418         switch (nl_channel_type) {
 419         case NL80211_CHAN_NO_HT:
 420                 return WLCORE_CHAN_NO_HT;
 421         case NL80211_CHAN_HT20:
 422                 return WLCORE_CHAN_HT20;
 423         case NL80211_CHAN_HT40MINUS:
 424                 return WLCORE_CHAN_HT40MINUS;
 425         case NL80211_CHAN_HT40PLUS:
 426                 return WLCORE_CHAN_HT40PLUS;
 427         default:
 428                 WARN_ON(1);
 429                 return WLCORE_CHAN_NO_HT;
 430         }
 431 }
 432 EXPORT_SYMBOL_GPL(wlcore_get_native_channel_type);
 433
 434 static int wl12xx_cmd_role_start_dev(struct wl1271 *wl,
 435                                      struct wl12xx_vif *wlvif,
 436                                      enum nl80211_band band,
 437                                      int channel)
 438 {
 439         struct wl12xx_cmd_role_start *cmd;
 440         int ret;
 441
 442         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 443         if (!cmd) {
 444                 ret = -ENOMEM;
 445                 goto out;
 446         }
 447
 448         wl1271_debug(DEBUG_CMD, "cmd role start dev %d", wlvif->dev_role_id);
 449
 450         cmd->role_id = wlvif->dev_role_id;
 451         if (band == NL80211_BAND_5GHZ)
 452                 cmd->band = WLCORE_BAND_5GHZ;
 453         cmd->channel = channel;
 454
 455         if (wlvif->dev_hlid == WL12XX_INVALID_LINK_ID) {
 456                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->dev_hlid);
 457                 if (ret)
 458                         goto out_free;
 459         }
 460         cmd->device.hlid = wlvif->dev_hlid;
 461         cmd->device.session = wl->session_ids[wlvif->dev_hlid];
 462
 463         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d",
 464                      cmd->role_id, cmd->device.hlid, cmd->device.session);
 465
 466         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 467         if (ret < 0) {
 468                 wl1271_error("failed to initiate cmd role enable");
 469                 goto err_hlid;
 470         }
 471
 472         goto out_free;
 473
 474 err_hlid:
 475         /* clear links on error */
 476         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 477
 478 out_free:
 479         kfree(cmd);
 480
 481 out:
 482         return ret;
 483 }
 484
 485 static int wl12xx_cmd_role_stop_dev(struct wl1271 *wl,
 486                                     struct wl12xx_vif *wlvif)
 487 {
 488         struct wl12xx_cmd_role_stop *cmd;
 489         int ret;
 490
 491         if (WARN_ON(wlvif->dev_hlid == WL12XX_INVALID_LINK_ID))
 492                 return -EINVAL;
 493
 494         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 495         if (!cmd) {
 496                 ret = -ENOMEM;
 497                 goto out;
 498         }
 499
 500         wl1271_debug(DEBUG_CMD, "cmd role stop dev");
 501
 502         cmd->role_id = wlvif->dev_role_id;
 503         cmd->disc_type = DISCONNECT_IMMEDIATE;
 504         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 505
 506         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 507         if (ret < 0) {
 508                 wl1271_error("failed to initiate cmd role stop");
 509                 goto out_free;
 510         }
 511
 512         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 513
 514 out_free:
 515         kfree(cmd);
 516
 517 out:
 518         return ret;
 519 }
 520
 521 int wl12xx_cmd_role_start_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 522 {
 523         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 524         struct wl12xx_cmd_role_start *cmd;
 525         u32 supported_rates;
 526         int ret;
 527
 528         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 529         if (!cmd) {
 530                 ret = -ENOMEM;
 531                 goto out;
 532         }
 533
 534         wl1271_debug(DEBUG_CMD, "cmd role start sta %d", wlvif->role_id);
 535
 536         cmd->role_id = wlvif->role_id;
 537         if (wlvif->band == NL80211_BAND_5GHZ)
 538                 cmd->band = WLCORE_BAND_5GHZ;
 539         cmd->channel = wlvif->channel;
 540         cmd->sta.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 541         cmd->sta.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 542         cmd->sta.ssid_type = WL12XX_SSID_TYPE_ANY;
 543         cmd->sta.ssid_len = wlvif->ssid_len;
 544         memcpy(cmd->sta.ssid, wlvif->ssid, wlvif->ssid_len);
 545         memcpy(cmd->sta.bssid, vif->bss_conf.bssid, ETH_ALEN);
 546
 547         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
 548                           wlcore_hw_sta_get_ap_rate_mask(wl, wlvif);
 549         if (wlvif->p2p)
 550                 supported_rates &= ~CONF_TX_CCK_RATES;
 551
 552         cmd->sta.local_rates = cpu_to_le32(supported_rates);
 553
 554         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 555
 556         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 557                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 558                 if (ret)
 559                         goto out_free;
 560         }
 561         cmd->sta.hlid = wlvif->sta.hlid;
 562         cmd->sta.session = wl->session_ids[wlvif->sta.hlid];
 563         /*
 564          * We don't have the correct remote rates in this stage.  The
 565          * rates will be reconfigured later, after association, if the
 566          * firmware supports ACX_PEER_CAP.  Otherwise, there's nothing
 567          * we can do, so use all supported_rates here.
 568          */
 569         cmd->sta.remote_rates = cpu_to_le32(supported_rates);
 570
 571         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 572                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 573                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 574                      wlvif->basic_rate_set, wlvif->rate_set);
 575
 576         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 577         if (ret < 0) {
 578                 wl1271_error("failed to initiate cmd role start sta");
 579                 goto err_hlid;
 580         }
 581
 582         wlvif->sta.role_chan_type = wlvif->channel_type;
 583         goto out_free;
 584
 585 err_hlid:
 586         /* clear links on error. */
 587         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 588
 589 out_free:
 590         kfree(cmd);
 591
 592 out:
 593         return ret;
 594 }
 595
 596 /* use this function to stop ibss as well */
 597 int wl12xx_cmd_role_stop_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 598 {
 599         struct wl12xx_cmd_role_stop *cmd;
 600         int ret;
 601
 602         if (WARN_ON(wlvif->sta.hlid == WL12XX_INVALID_LINK_ID))
 603                 return -EINVAL;
 604
 605         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 606         if (!cmd) {
 607                 ret = -ENOMEM;
 608                 goto out;
 609         }
 610
 611         wl1271_debug(DEBUG_CMD, "cmd role stop sta %d", wlvif->role_id);
 612
 613         cmd->role_id = wlvif->role_id;
 614         cmd->disc_type = DISCONNECT_IMMEDIATE;
 615         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 616
 617         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 618         if (ret < 0) {
 619                 wl1271_error("failed to initiate cmd role stop sta");
 620                 goto out_free;
 621         }
 622
 623         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 624
 625 out_free:
 626         kfree(cmd);
 627
 628 out:
 629         return ret;
 630 }
 631
 632 int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 633 {
 634         struct wl12xx_cmd_role_start *cmd;
 635         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 636         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 637         u32 supported_rates;
 638         int ret;
 639
 640         wl1271_debug(DEBUG_CMD, "cmd role start ap %d", wlvif->role_id);
 641
 642         /* If MESH --> ssid_len is always 0 */
 643         if (!ieee80211_vif_is_mesh(vif)) {
 644                 /* trying to use hidden SSID with an old hostapd version */
 645                 if (wlvif->ssid_len == 0 && !bss_conf->hidden_ssid) {
 646                         wl1271_error("got a null SSID from beacon/bss");
 647                         ret = -EINVAL;
 648                         goto out;
 649                 }
 650         }
 651
 652         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 653         if (!cmd) {
 654                 ret = -ENOMEM;
 655                 goto out;
 656         }
 657
 658         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.global_hlid);
 659         if (ret < 0)
 660                 goto out_free;
 661
 662         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 663         if (ret < 0)
 664                 goto out_free_global;
 665
 666         /* use the previous security seq, if this is a recovery/resume */
 667         wl->links[wlvif->ap.bcast_hlid].total_freed_pkts =
 668                                                 wlvif->total_freed_pkts;
 669
 670         cmd->role_id = wlvif->role_id;
 671         cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 672         cmd->ap.bss_index = WL1271_AP_BSS_INDEX;
 673         cmd->ap.global_hlid = wlvif->ap.global_hlid;
 674         cmd->ap.broadcast_hlid = wlvif->ap.bcast_hlid;
 675         cmd->ap.global_session_id = wl->session_ids[wlvif->ap.global_hlid];
 676         cmd->ap.bcast_session_id = wl->session_ids[wlvif->ap.bcast_hlid];
 677         cmd->ap.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 678         cmd->ap.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 679         cmd->ap.dtim_interval = bss_conf->dtim_period;
 680         cmd->ap.beacon_expiry = WL1271_AP_DEF_BEACON_EXP;
 681         /* FIXME: Change when adding DFS */
 682         cmd->ap.reset_tsf = 1;  /* By default reset AP TSF */
 683         cmd->ap.wmm = wlvif->wmm_enabled;
 684         cmd->channel = wlvif->channel;
 685         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 686
 687         if (!bss_conf->hidden_ssid) {
 688                 /* take the SSID from the beacon for backward compatibility */
 689                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_PUBLIC;
 690                 cmd->ap.ssid_len = wlvif->ssid_len;
 691                 memcpy(cmd->ap.ssid, wlvif->ssid, wlvif->ssid_len);
 692         } else {
 693                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_HIDDEN;
 694                 cmd->ap.ssid_len = bss_conf->ssid_len;
 695                 memcpy(cmd->ap.ssid, bss_conf->ssid, bss_conf->ssid_len);
 696         }
 697
 698         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
 699                 wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif);
 700         if (wlvif->p2p)
 701                 supported_rates &= ~CONF_TX_CCK_RATES;
 702
 703         wl1271_debug(DEBUG_CMD, "cmd role start ap with supported_rates 0x%08x",
 704                      supported_rates);
 705
 706         cmd->ap.local_rates = cpu_to_le32(supported_rates);
 707
 708         switch (wlvif->band) {
 709         case NL80211_BAND_2GHZ:
 710                 cmd->band = WLCORE_BAND_2_4GHZ;
 711                 break;
 712         case NL80211_BAND_5GHZ:
 713                 cmd->band = WLCORE_BAND_5GHZ;
 714                 break;
 715         default:
 716                 wl1271_warning("ap start - unknown band: %d", (int)wlvif->band);
 717                 cmd->band = WLCORE_BAND_2_4GHZ;
 718                 break;
 719         }
 720
 721         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 722         if (ret < 0) {
 723                 wl1271_error("failed to initiate cmd role start ap");
 724                 goto out_free_bcast;
 725         }
 726
 727         goto out_free;
 728
 729 out_free_bcast:
 730         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 731
 732 out_free_global:
 733         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 734
 735 out_free:
 736         kfree(cmd);
 737
 738 out:
 739         return ret;
 740 }
 741
 742 int wl12xx_cmd_role_stop_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 743 {
 744         struct wl12xx_cmd_role_stop *cmd;
 745         int ret;
 746
 747         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 748         if (!cmd) {
 749                 ret = -ENOMEM;
 750                 goto out;
 751         }
 752
 753         wl1271_debug(DEBUG_CMD, "cmd role stop ap %d", wlvif->role_id);
 754
 755         cmd->role_id = wlvif->role_id;
 756
 757         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 758         if (ret < 0) {
 759                 wl1271_error("failed to initiate cmd role stop ap");
 760                 goto out_free;
 761         }
 762
 763         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 764         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 765
 766 out_free:
 767         kfree(cmd);
 768
 769 out:
 770         return ret;
 771 }
 772
 773 int wl12xx_cmd_role_start_ibss(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 774 {
 775         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 776         struct wl12xx_cmd_role_start *cmd;
 777         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 778         int ret;
 779
 780         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 781         if (!cmd) {
 782                 ret = -ENOMEM;
 783                 goto out;
 784         }
 785
 786         wl1271_debug(DEBUG_CMD, "cmd role start ibss %d", wlvif->role_id);
 787
 788         cmd->role_id = wlvif->role_id;
 789         if (wlvif->band == NL80211_BAND_5GHZ)
 790                 cmd->band = WLCORE_BAND_5GHZ;
 791         cmd->channel = wlvif->channel;
 792         cmd->ibss.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 793         cmd->ibss.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 794         cmd->ibss.dtim_interval = bss_conf->dtim_period;
 795         cmd->ibss.ssid_type = WL12XX_SSID_TYPE_ANY;
 796         cmd->ibss.ssid_len = wlvif->ssid_len;
 797         memcpy(cmd->ibss.ssid, wlvif->ssid, wlvif->ssid_len);
 798         memcpy(cmd->ibss.bssid, vif->bss_conf.bssid, ETH_ALEN);
 799         cmd->sta.local_rates = cpu_to_le32(wlvif->rate_set);
 800
 801         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 802                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 803                 if (ret)
 804                         goto out_free;
 805         }
 806         cmd->ibss.hlid = wlvif->sta.hlid;
 807         cmd->ibss.remote_rates = cpu_to_le32(wlvif->rate_set);
 808
 809         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 810                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 811                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 812                      wlvif->basic_rate_set, wlvif->rate_set);
 813
 814         wl1271_debug(DEBUG_CMD, "vif->bss_conf.bssid = %pM",
 815                      vif->bss_conf.bssid);
 816
 817         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 818         if (ret < 0) {
 819                 wl1271_error("failed to initiate cmd role enable");
 820                 goto err_hlid;
 821         }
 822
 823         goto out_free;
 824
 825 err_hlid:
 826         /* clear links on error. */
 827         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 828
 829 out_free:
 830         kfree(cmd);
 831
 832 out:
 833         return ret;
 834 }
 835
 836
 837 /**
 838  * send test command to firmware
 839  *
 840  * @wl: wl struct
 841  * @buf: buffer containing the command, with all headers, must work with dma
 842  * @len: length of the buffer
 843  * @answer: is answer needed
 844  */
 845 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 846 {
 847         int ret;
 848         size_t res_len = 0;
 849
 850         wl1271_debug(DEBUG_CMD, "cmd test");
 851
 852         if (answer)
 853                 res_len = buf_len;
 854
 855         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 856
 857         if (ret < 0) {
 858                 wl1271_warning("TEST command failed");
 859                 return ret;
 860         }
 861
 862         return ret;
 863 }
 864 EXPORT_SYMBOL_GPL(wl1271_cmd_test);
 865
 866 /**
 867  * read acx from firmware
 868  *
 869  * @wl: wl struct
 870  * @id: acx id
 871  * @buf: buffer for the response, including all headers, must work with dma
 872  * @len: length of buf
 873  */
 874 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf,
 875                            size_t cmd_len, size_t res_len)
 876 {
 877         struct acx_header *acx = buf;
 878         int ret;
 879
 880         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 881
 882         acx->id = cpu_to_le16(id);
 883
 884         /* response payload length, does not include any headers */
 885         acx->len = cpu_to_le16(res_len - sizeof(*acx));
 886
 887         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, cmd_len, res_len);
 888         if (ret < 0)
 889                 wl1271_error("INTERROGATE command failed");
 890
 891         return ret;
 892 }
 893
 894 /**
 895  * write acx value to firmware
 896  *
 897  * @wl: wl struct
 898  * @id: acx id
 899  * @buf: buffer containing acx, including all headers, must work with dma
 900  * @len: length of buf
 901  * @valid_rets: bitmap of valid cmd status codes (i.e. return values).
 902  * return the cmd status on success.
 903  */
 904 int wlcore_cmd_configure_failsafe(struct wl1271 *wl, u16 id, void *buf,
 905                                   size_t len, unsigned long valid_rets)
 906 {
 907         struct acx_header *acx = buf;
 908         int ret;
 909
 910         wl1271_debug(DEBUG_CMD, "cmd configure (%d)", id);
 911
 912         if (WARN_ON_ONCE(len < sizeof(*acx)))
 913                 return -EIO;
 914
 915         acx->id = cpu_to_le16(id);
 916
 917         /* payload length, does not include any headers */
 918         acx->len = cpu_to_le16(len - sizeof(*acx));
 919
 920         ret = wlcore_cmd_send_failsafe(wl, CMD_CONFIGURE, acx, len, 0,
 921                                        valid_rets);
 922         if (ret < 0) {
 923                 wl1271_warning("CONFIGURE command NOK");
 924                 return ret;
 925         }
 926
 927         return ret;
 928 }
 929
 930 /*
 931  * wrapper for wlcore_cmd_configure that accepts only success status.
 932  * return 0 on success
 933  */
 934 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 935 {
 936         int ret = wlcore_cmd_configure_failsafe(wl, id, buf, len, 0);
 937
 938         if (ret < 0)
 939                 return ret;
 940         return 0;
 941 }
 942 EXPORT_SYMBOL_GPL(wl1271_cmd_configure);
 943
 944 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 945 {
 946         struct cmd_enabledisable_path *cmd;
 947         int ret;
 948         u16 cmd_rx, cmd_tx;
 949
 950         wl1271_debug(DEBUG_CMD, "cmd data path");
 951
 952         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 953         if (!cmd) {
 954                 ret = -ENOMEM;
 955                 goto out;
 956         }
 957
 958         /* the channel here is only used for calibration, so hardcoded to 1 */
 959         cmd->channel = 1;
 960
 961         if (enable) {
 962                 cmd_rx = CMD_ENABLE_RX;
 963                 cmd_tx = CMD_ENABLE_TX;
 964         } else {
 965                 cmd_rx = CMD_DISABLE_RX;
 966                 cmd_tx = CMD_DISABLE_TX;
 967         }
 968
 969         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 970         if (ret < 0) {
 971                 wl1271_error("rx %s cmd for channel %d failed",
 972                              enable ? "start" : "stop", cmd->channel);
 973                 goto out;
 974         }
 975
 976         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 977                      enable ? "start" : "stop", cmd->channel);
 978
 979         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 980         if (ret < 0) {
 981                 wl1271_error("tx %s cmd for channel %d failed",
 982                              enable ? "start" : "stop", cmd->channel);
 983                 goto out;
 984         }
 985
 986         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 987                      enable ? "start" : "stop", cmd->channel);
 988
 989 out:
 990         kfree(cmd);
 991         return ret;
 992 }
 993 EXPORT_SYMBOL_GPL(wl1271_cmd_data_path);
 994
 995 int wl1271_cmd_ps_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 996                        u8 ps_mode, u16 auto_ps_timeout)
 997 {
 998         struct wl1271_cmd_ps_params *ps_params = NULL;
 999         int ret = 0;
1000
1001         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
1002
1003         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
1004         if (!ps_params) {
1005                 ret = -ENOMEM;
1006                 goto out;
1007         }
1008
1009         ps_params->role_id = wlvif->role_id;
1010         ps_params->ps_mode = ps_mode;
1011         ps_params->auto_ps_timeout = auto_ps_timeout;
1012
1013         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
1014                               sizeof(*ps_params), 0);
1015         if (ret < 0) {
1016                 wl1271_error("cmd set_ps_mode failed");
1017                 goto out;
1018         }
1019
1020 out:
1021         kfree(ps_params);
1022         return ret;
1023 }
1024
1025 int wl1271_cmd_template_set(struct wl1271 *wl, u8 role_id,
1026                             u16 template_id, void *buf, size_t buf_len,
1027                             int index, u32 rates)
1028 {
1029         struct wl1271_cmd_template_set *cmd;
1030         int ret = 0;
1031
1032         wl1271_debug(DEBUG_CMD, "cmd template_set %d (role %d)",
1033                      template_id, role_id);
1034
1035         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
1036         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
1037
1038         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1039         if (!cmd) {
1040                 ret = -ENOMEM;
1041                 goto out;
1042         }
1043
1044         /* during initialization wlvif is NULL */
1045         cmd->role_id = role_id;
1046         cmd->len = cpu_to_le16(buf_len);
1047         cmd->template_type = template_id;
1048         cmd->enabled_rates = cpu_to_le32(rates);
1049         cmd->short_retry_limit = wl->conf.tx.tmpl_short_retry_limit;
1050         cmd->long_retry_limit = wl->conf.tx.tmpl_long_retry_limit;
1051         cmd->index = index;
1052
1053         if (buf)
1054                 memcpy(cmd->template_data, buf, buf_len);
1055
1056         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
1057         if (ret < 0) {
1058                 wl1271_warning("cmd set_template failed: %d", ret);
1059                 goto out_free;
1060         }
1061
1062 out_free:
1063         kfree(cmd);
1064
1065 out:
1066         return ret;
1067 }
1068
1069 int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1070 {
1071         struct sk_buff *skb = NULL;
1072         int size;
1073         void *ptr;
1074         int ret = -ENOMEM;
1075
1076
1077         if (wlvif->bss_type == BSS_TYPE_IBSS) {
1078                 size = sizeof(struct wl12xx_null_data_template);
1079                 ptr = NULL;
1080         } else {
1081                 skb = ieee80211_nullfunc_get(wl->hw,
1082                                              wl12xx_wlvif_to_vif(wlvif),
1083                                              false);
1084                 if (!skb)
1085                         goto out;
1086                 size = skb->len;
1087                 ptr = skb->data;
1088         }
1089
1090         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1091                                       CMD_TEMPL_NULL_DATA, ptr, size, 0,
1092                                       wlvif->basic_rate);
1093
1094 out:
1095         dev_kfree_skb(skb);
1096         if (ret)
1097                 wl1271_warning("cmd buld null data failed %d", ret);
1098
1099         return ret;
1100
1101 }
1102
1103 int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,
1104                                    struct wl12xx_vif *wlvif)
1105 {
1106         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1107         struct sk_buff *skb = NULL;
1108         int ret = -ENOMEM;
1109
1110         skb = ieee80211_nullfunc_get(wl->hw, vif, false);
1111         if (!skb)
1112                 goto out;
1113
1114         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV,
1115                                       skb->data, skb->len,
1116                                       wlvif->sta.klv_template_id,
1117                                       wlvif->basic_rate);
1118
1119 out:
1120         dev_kfree_skb(skb);
1121         if (ret)
1122                 wl1271_warning("cmd build klv null data failed %d", ret);
1123
1124         return ret;
1125
1126 }
1127
1128 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1129                              u16 aid)
1130 {
1131         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1132         struct sk_buff *skb;
1133         int ret = 0;
1134
1135         skb = ieee80211_pspoll_get(wl->hw, vif);
1136         if (!skb)
1137                 goto out;
1138
1139         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1140                                       CMD_TEMPL_PS_POLL, skb->data,
1141                                       skb->len, 0, wlvif->basic_rate_set);
1142
1143 out:
1144         dev_kfree_skb(skb);
1145         return ret;
1146 }
1147
1148 int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1149                                u8 role_id, u8 band,
1150                                const u8 *ssid, size_t ssid_len,
1151                                const u8 *ie0, size_t ie0_len, const u8 *ie1,
1152                                size_t ie1_len, bool sched_scan)
1153 {
1154         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1155         struct sk_buff *skb;
1156         int ret;
1157         u32 rate;
1158         u16 template_id_2_4 = wl->scan_templ_id_2_4;
1159         u16 template_id_5 = wl->scan_templ_id_5;
1160
1161         wl1271_debug(DEBUG_SCAN, "build probe request band %d", band);
1162
1163         skb = ieee80211_probereq_get(wl->hw, vif->addr, ssid, ssid_len,
1164                                      ie0_len + ie1_len);
1165         if (!skb) {
1166                 ret = -ENOMEM;
1167                 goto out;
1168         }
1169         if (ie0_len)
1170                 skb_put_data(skb, ie0, ie0_len);
1171         if (ie1_len)
1172                 skb_put_data(skb, ie1, ie1_len);
1173
1174         if (sched_scan &&
1175             (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) {
1176                 template_id_2_4 = wl->sched_scan_templ_id_2_4;
1177                 template_id_5 = wl->sched_scan_templ_id_5;
1178         }
1179
1180         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
1181         if (band == NL80211_BAND_2GHZ)
1182                 ret = wl1271_cmd_template_set(wl, role_id,
1183                                               template_id_2_4,
1184                                               skb->data, skb->len, 0, rate);
1185         else
1186                 ret = wl1271_cmd_template_set(wl, role_id,
1187                                               template_id_5,
1188                                               skb->data, skb->len, 0, rate);
1189
1190 out:
1191         dev_kfree_skb(skb);
1192         return ret;
1193 }
1194 EXPORT_SYMBOL_GPL(wl12xx_cmd_build_probe_req);
1195
1196 struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,
1197                                               struct wl12xx_vif *wlvif,
1198                                               struct sk_buff *skb)
1199 {
1200         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1201         int ret;
1202         u32 rate;
1203
1204         if (!skb)
1205                 skb = ieee80211_ap_probereq_get(wl->hw, vif);
1206         if (!skb)
1207                 goto out;
1208
1209         wl1271_debug(DEBUG_SCAN, "set ap probe request template");
1210
1211         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]);
1212         if (wlvif->band == NL80211_BAND_2GHZ)
1213                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1214                                               CMD_TEMPL_CFG_PROBE_REQ_2_4,
1215                                               skb->data, skb->len, 0, rate);
1216         else
1217                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1218                                               CMD_TEMPL_CFG_PROBE_REQ_5,
1219                                               skb->data, skb->len, 0, rate);
1220
1221         if (ret < 0)
1222                 wl1271_error("Unable to set ap probe request template.");
1223
1224 out:
1225         return skb;
1226 }
1227
1228 int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1229 {
1230         int ret, extra = 0;
1231         u16 fc;
1232         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1233         struct sk_buff *skb;
1234         struct wl12xx_arp_rsp_template *tmpl;
1235         struct ieee80211_hdr_3addr *hdr;
1236         struct arphdr *arp_hdr;
1237
1238         skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) +
1239                             WL1271_EXTRA_SPACE_MAX);
1240         if (!skb) {
1241                 wl1271_error("failed to allocate buffer for arp rsp template");
1242                 return -ENOMEM;
1243         }
1244
1245         skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX);
1246
1247         tmpl = skb_put_zero(skb, sizeof(*tmpl));
1248
1249         /* llc layer */
1250         memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header));
1251         tmpl->llc_type = cpu_to_be16(ETH_P_ARP);
1252
1253         /* arp header */
1254         arp_hdr = &tmpl->arp_hdr;
1255         arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);
1256         arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);
1257         arp_hdr->ar_hln = ETH_ALEN;
1258         arp_hdr->ar_pln = 4;
1259         arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);
1260
1261         /* arp payload */
1262         memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN);
1263         tmpl->sender_ip = wlvif->ip_addr;
1264
1265         /* encryption space */
1266         switch (wlvif->encryption_type) {
1267         case KEY_TKIP:
1268                 if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
1269                         extra = WL1271_EXTRA_SPACE_TKIP;
1270                 break;
1271         case KEY_AES:
1272                 extra = WL1271_EXTRA_SPACE_AES;
1273                 break;
1274         case KEY_NONE:
1275         case KEY_WEP:
1276         case KEY_GEM:
1277                 extra = 0;
1278                 break;
1279         default:
1280                 wl1271_warning("Unknown encryption type: %d",
1281                                wlvif->encryption_type);
1282                 ret = -EINVAL;
1283                 goto out;
1284         }
1285
1286         if (extra) {
1287                 u8 *space = skb_push(skb, extra);
1288                 memset(space, 0, extra);
1289         }
1290
1291         /* QoS header - BE */
1292         if (wlvif->sta.qos)
1293                 memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16));
1294
1295         /* mac80211 header */
1296         hdr = skb_push(skb, sizeof(*hdr));
1297         memset(hdr, 0, sizeof(*hdr));
1298         fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS;
1299         if (wlvif->sta.qos)
1300                 fc |= IEEE80211_STYPE_QOS_DATA;
1301         else
1302                 fc |= IEEE80211_STYPE_DATA;
1303         if (wlvif->encryption_type != KEY_NONE)
1304                 fc |= IEEE80211_FCTL_PROTECTED;
1305
1306         hdr->frame_control = cpu_to_le16(fc);
1307         memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN);
1308         memcpy(hdr->addr2, vif->addr, ETH_ALEN);
1309         eth_broadcast_addr(hdr->addr3);
1310
1311         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP,
1312                                       skb->data, skb->len, 0,
1313                                       wlvif->basic_rate);
1314 out:
1315         dev_kfree_skb(skb);
1316         return ret;
1317 }
1318
1319 int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif)
1320 {
1321         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
1322         struct ieee80211_qos_hdr template;
1323
1324         memset(&template, 0, sizeof(template));
1325
1326         memcpy(template.addr1, vif->bss_conf.bssid, ETH_ALEN);
1327         memcpy(template.addr2, vif->addr, ETH_ALEN);
1328         memcpy(template.addr3, vif->bss_conf.bssid, ETH_ALEN);
1329
1330         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1331                                              IEEE80211_STYPE_QOS_NULLFUNC |
1332                                              IEEE80211_FCTL_TODS);
1333
1334         /* FIXME: not sure what priority to use here */
1335         template.qos_ctrl = cpu_to_le16(0);
1336
1337         return wl1271_cmd_template_set(wl, wlvif->role_id,
1338                                        CMD_TEMPL_QOS_NULL_DATA, &template,
1339                                        sizeof(template), 0,
1340                                        wlvif->basic_rate);
1341 }
1342
1343 int wl12xx_cmd_set_default_wep_key(struct wl1271 *wl, u8 id, u8 hlid)
1344 {
1345         struct wl1271_cmd_set_keys *cmd;
1346         int ret = 0;
1347
1348         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
1349
1350         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1351         if (!cmd) {
1352                 ret = -ENOMEM;
1353                 goto out;
1354         }
1355
1356         cmd->hlid = hlid;
1357         cmd->key_id = id;
1358         cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1359         cmd->key_action = cpu_to_le16(KEY_SET_ID);
1360         cmd->key_type = KEY_WEP;
1361
1362         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1363         if (ret < 0) {
1364                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
1365                 goto out;
1366         }
1367
1368 out:
1369         kfree(cmd);
1370
1371         return ret;
1372 }
1373
1374 int wl1271_cmd_set_sta_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1375                        u16 action, u8 id, u8 key_type,
1376                        u8 key_size, const u8 *key, const u8 *addr,
1377                        u32 tx_seq_32, u16 tx_seq_16)
1378 {
1379         struct wl1271_cmd_set_keys *cmd;
1380         int ret = 0;
1381
1382         /* hlid might have already been deleted */
1383         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
1384                 return 0;
1385
1386         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1387         if (!cmd) {
1388                 ret = -ENOMEM;
1389                 goto out;
1390         }
1391
1392         cmd->hlid = wlvif->sta.hlid;
1393
1394         if (key_type == KEY_WEP)
1395                 cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1396         else if (is_broadcast_ether_addr(addr))
1397                 cmd->lid_key_type = BROADCAST_LID_TYPE;
1398         else
1399                 cmd->lid_key_type = UNICAST_LID_TYPE;
1400
1401         cmd->key_action = cpu_to_le16(action);
1402         cmd->key_size = key_size;
1403         cmd->key_type = key_type;
1404
1405         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1406         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1407
1408         cmd->key_id = id;
1409
1410         if (key_type == KEY_TKIP) {
1411                 /*
1412                  * We get the key in the following form:
1413                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1414                  * but the target is expecting:
1415                  * TKIP - RX MIC - TX MIC
1416                  */
1417                 memcpy(cmd->key, key, 16);
1418                 memcpy(cmd->key + 16, key + 24, 8);
1419                 memcpy(cmd->key + 24, key + 16, 8);
1420
1421         } else {
1422                 memcpy(cmd->key, key, key_size);
1423         }
1424
1425         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1426
1427         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1428         if (ret < 0) {
1429                 wl1271_warning("could not set keys");
1430         goto out;
1431         }
1432
1433 out:
1434         kfree(cmd);
1435
1436         return ret;
1437 }
1438
1439 /*
1440  * TODO: merge with sta/ibss into 1 set_key function.
1441  * note there are slight diffs
1442  */
1443 int wl1271_cmd_set_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1444                           u16 action, u8 id, u8 key_type,
1445                           u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
1446                           u16 tx_seq_16)
1447 {
1448         struct wl1271_cmd_set_keys *cmd;
1449         int ret = 0;
1450         u8 lid_type;
1451
1452         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1453         if (!cmd)
1454                 return -ENOMEM;
1455
1456         if (hlid == wlvif->ap.bcast_hlid) {
1457                 if (key_type == KEY_WEP)
1458                         lid_type = WEP_DEFAULT_LID_TYPE;
1459                 else
1460                         lid_type = BROADCAST_LID_TYPE;
1461         } else {
1462                 lid_type = UNICAST_LID_TYPE;
1463         }
1464
1465         wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d"
1466                      " hlid: %d", (int)action, (int)id, (int)lid_type,
1467                      (int)key_type, (int)hlid);
1468
1469         cmd->lid_key_type = lid_type;
1470         cmd->hlid = hlid;
1471         cmd->key_action = cpu_to_le16(action);
1472         cmd->key_size = key_size;
1473         cmd->key_type = key_type;
1474         cmd->key_id = id;
1475         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1476         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1477
1478         if (key_type == KEY_TKIP) {
1479                 /*
1480                  * We get the key in the following form:
1481                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1482                  * but the target is expecting:
1483                  * TKIP - RX MIC - TX MIC
1484                  */
1485                 memcpy(cmd->key, key, 16);
1486                 memcpy(cmd->key + 16, key + 24, 8);
1487                 memcpy(cmd->key + 24, key + 16, 8);
1488         } else {
1489                 memcpy(cmd->key, key, key_size);
1490         }
1491
1492         wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd));
1493
1494         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1495         if (ret < 0) {
1496                 wl1271_warning("could not set ap keys");
1497                 goto out;
1498         }
1499
1500 out:
1501         kfree(cmd);
1502         return ret;
1503 }
1504
1505 int wl12xx_cmd_set_peer_state(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1506                               u8 hlid)
1507 {
1508         struct wl12xx_cmd_set_peer_state *cmd;
1509         int ret = 0;
1510
1511         wl1271_debug(DEBUG_CMD, "cmd set peer state (hlid=%d)", hlid);
1512
1513         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1514         if (!cmd) {
1515                 ret = -ENOMEM;
1516                 goto out;
1517         }
1518
1519         cmd->hlid = hlid;
1520         cmd->state = WL1271_CMD_STA_STATE_CONNECTED;
1521
1522         /* wmm param is valid only for station role */
1523         if (wlvif->bss_type == BSS_TYPE_STA_BSS)
1524                 cmd->wmm = wlvif->wmm_enabled;
1525
1526         ret = wl1271_cmd_send(wl, CMD_SET_PEER_STATE, cmd, sizeof(*cmd), 0);
1527         if (ret < 0) {
1528                 wl1271_error("failed to send set peer state command");
1529                 goto out_free;
1530         }
1531
1532 out_free:
1533         kfree(cmd);
1534
1535 out:
1536         return ret;
1537 }
1538
1539 int wl12xx_cmd_add_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1540                         struct ieee80211_sta *sta, u8 hlid)
1541 {
1542         struct wl12xx_cmd_add_peer *cmd;
1543         int i, ret;
1544         u32 sta_rates;
1545
1546         wl1271_debug(DEBUG_CMD, "cmd add peer %d", (int)hlid);
1547
1548         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1549         if (!cmd) {
1550                 ret = -ENOMEM;
1551                 goto out;
1552         }
1553
1554         memcpy(cmd->addr, sta->addr, ETH_ALEN);
1555         cmd->bss_index = WL1271_AP_BSS_INDEX;
1556         cmd->aid = sta->aid;
1557         cmd->hlid = hlid;
1558         cmd->sp_len = sta->max_sp;
1559         cmd->wmm = sta->wme ? 1 : 0;
1560         cmd->session_id = wl->session_ids[hlid];
1561         cmd->role_id = wlvif->role_id;
1562
1563         for (i = 0; i < NUM_ACCESS_CATEGORIES_COPY; i++)
1564                 if (sta->wme && (sta->uapsd_queues & BIT(i)))
1565                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1566                                         WL1271_PSD_UPSD_TRIGGER;
1567                 else
1568                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1569                                         WL1271_PSD_LEGACY;
1570
1571
1572         sta_rates = sta->supp_rates[wlvif->band];
1573         if (sta->ht_cap.ht_supported)
1574                 sta_rates |=
1575                         (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET) |
1576                         (sta->ht_cap.mcs.rx_mask[1] << HW_MIMO_RATES_OFFSET);
1577
1578         cmd->supported_rates =
1579                 cpu_to_le32(wl1271_tx_enabled_rates_get(wl, sta_rates,
1580                                                         wlvif->band));
1581
1582         if (!cmd->supported_rates) {
1583                 wl1271_debug(DEBUG_CMD,
1584                              "peer has no supported rates yet, configuring basic rates: 0x%x",
1585                              wlvif->basic_rate_set);
1586                 cmd->supported_rates = cpu_to_le32(wlvif->basic_rate_set);
1587         }
1588
1589         wl1271_debug(DEBUG_CMD, "new peer rates=0x%x queues=0x%x",
1590                      cmd->supported_rates, sta->uapsd_queues);
1591
1592         ret = wl1271_cmd_send(wl, CMD_ADD_PEER, cmd, sizeof(*cmd), 0);
1593         if (ret < 0) {
1594                 wl1271_error("failed to initiate cmd add peer");
1595                 goto out_free;
1596         }
1597
1598 out_free:
1599         kfree(cmd);
1600
1601 out:
1602         return ret;
1603 }
1604
1605 int wl12xx_cmd_remove_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1606                            u8 hlid)
1607 {
1608         struct wl12xx_cmd_remove_peer *cmd;
1609         int ret;
1610         bool timeout = false;
1611
1612         wl1271_debug(DEBUG_CMD, "cmd remove peer %d", (int)hlid);
1613
1614         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1615         if (!cmd) {
1616                 ret = -ENOMEM;
1617                 goto out;
1618         }
1619
1620         cmd->hlid = hlid;
1621         /* We never send a deauth, mac80211 is in charge of this */
1622         cmd->reason_opcode = 0;
1623         cmd->send_deauth_flag = 0;
1624         cmd->role_id = wlvif->role_id;
1625
1626         ret = wl1271_cmd_send(wl, CMD_REMOVE_PEER, cmd, sizeof(*cmd), 0);
1627         if (ret < 0) {
1628                 wl1271_error("failed to initiate cmd remove peer");
1629                 goto out_free;
1630         }
1631
1632         ret = wl->ops->wait_for_event(wl,
1633                                       WLCORE_EVENT_PEER_REMOVE_COMPLETE,
1634                                       &timeout);
1635
1636         /*
1637          * We are ok with a timeout here. The event is sometimes not sent
1638          * due to a firmware bug. In case of another error (like SDIO timeout)
1639          * queue a recovery.
1640          */
1641         if (ret)
1642                 wl12xx_queue_recovery_work(wl);
1643
1644 out_free:
1645         kfree(cmd);
1646
1647 out:
1648         return ret;
1649 }
1650
1651 static int wlcore_get_reg_conf_ch_idx(enum nl80211_band band, u16 ch)
1652 {
1653         /*
1654          * map the given band/channel to the respective predefined
1655          * bit expected by the fw
1656          */
1657         switch (band) {
1658         case NL80211_BAND_2GHZ:
1659                 /* channels 1..14 are mapped to 0..13 */
1660                 if (ch >= 1 && ch <= 14)
1661                         return ch - 1;
1662                 break;
1663         case NL80211_BAND_5GHZ:
1664                 switch (ch) {
1665                 case 8 ... 16:
1666                         /* channels 8,12,16 are mapped to 18,19,20 */
1667                         return 18 + (ch-8)/4;
1668                 case 34 ... 48:
1669                         /* channels 34,36..48 are mapped to 21..28 */
1670                         return 21 + (ch-34)/2;
1671                 case 52 ... 64:
1672                         /* channels 52,56..64 are mapped to 29..32 */
1673                         return 29 + (ch-52)/4;
1674                 case 100 ... 140:
1675                         /* channels 100,104..140 are mapped to 33..43 */
1676                         return 33 + (ch-100)/4;
1677                 case 149 ... 165:
1678                         /* channels 149,153..165 are mapped to 44..48 */
1679                         return 44 + (ch-149)/4;
1680                 default:
1681                         break;
1682                 }
1683                 break;
1684         default:
1685                 break;
1686         }
1687
1688         wl1271_error("%s: unknown band/channel: %d/%d", __func__, band, ch);
1689         return -1;
1690 }
1691
1692 void wlcore_set_pending_regdomain_ch(struct wl1271 *wl, u16 channel,
1693                                      enum nl80211_band band)
1694 {
1695         int ch_bit_idx = 0;
1696
1697         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1698                 return;
1699
1700         ch_bit_idx = wlcore_get_reg_conf_ch_idx(band, channel);
1701
1702         if (ch_bit_idx >= 0 && ch_bit_idx <= WL1271_MAX_CHANNELS)
1703                 set_bit(ch_bit_idx, (long *)wl->reg_ch_conf_pending);
1704 }
1705
1706 int wlcore_cmd_regdomain_config_locked(struct wl1271 *wl)
1707 {
1708         struct wl12xx_cmd_regdomain_dfs_config *cmd = NULL;
1709         int ret = 0, i, b, ch_bit_idx;
1710         u32 tmp_ch_bitmap[2];
1711         struct wiphy *wiphy = wl->hw->wiphy;
1712         struct ieee80211_supported_band *band;
1713         bool timeout = false;
1714
1715         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1716                 return 0;
1717
1718         wl1271_debug(DEBUG_CMD, "cmd reg domain config");
1719
1720         memset(tmp_ch_bitmap, 0, sizeof(tmp_ch_bitmap));
1721
1722         for (b = NL80211_BAND_2GHZ; b <= NL80211_BAND_5GHZ; b++) {
1723                 band = wiphy->bands[b];
1724                 for (i = 0; i < band->n_channels; i++) {
1725                         struct ieee80211_channel *channel = &band->channels[i];
1726                         u16 ch = channel->hw_value;
1727                         u32 flags = channel->flags;
1728
1729                         if (flags & (IEEE80211_CHAN_DISABLED |
1730                                      IEEE80211_CHAN_NO_IR))
1731                                 continue;
1732
1733                         if ((flags & IEEE80211_CHAN_RADAR) &&
1734                             channel->dfs_state != NL80211_DFS_AVAILABLE)
1735                                 continue;
1736
1737                         ch_bit_idx = wlcore_get_reg_conf_ch_idx(b, ch);
1738                         if (ch_bit_idx < 0)
1739                                 continue;
1740
1741                         set_bit(ch_bit_idx, (long *)tmp_ch_bitmap);
1742                 }
1743         }
1744
1745         tmp_ch_bitmap[0] |= wl->reg_ch_conf_pending[0];
1746         tmp_ch_bitmap[1] |= wl->reg_ch_conf_pending[1];
1747
1748         if (!memcmp(tmp_ch_bitmap, wl->reg_ch_conf_last, sizeof(tmp_ch_bitmap)))
1749                 goto out;
1750
1751         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1752         if (!cmd) {
1753                 ret = -ENOMEM;
1754                 goto out;
1755         }
1756
1757         cmd->ch_bit_map1 = cpu_to_le32(tmp_ch_bitmap[0]);
1758         cmd->ch_bit_map2 = cpu_to_le32(tmp_ch_bitmap[1]);
1759         cmd->dfs_region = wl->dfs_region;
1760
1761         wl1271_debug(DEBUG_CMD,
1762                      "cmd reg domain bitmap1: 0x%08x, bitmap2: 0x%08x",
1763                      cmd->ch_bit_map1, cmd->ch_bit_map2);
1764
1765         ret = wl1271_cmd_send(wl, CMD_DFS_CHANNEL_CONFIG, cmd, sizeof(*cmd), 0);
1766         if (ret < 0) {
1767                 wl1271_error("failed to send reg domain dfs config");
1768                 goto out;
1769         }
1770
1771         ret = wl->ops->wait_for_event(wl,
1772                                       WLCORE_EVENT_DFS_CONFIG_COMPLETE,
1773                                       &timeout);
1774         if (ret < 0 || timeout) {
1775                 wl1271_error("reg domain conf %serror",
1776                              timeout ? "completion " : "");
1777                 ret = timeout ? -ETIMEDOUT : ret;
1778                 goto out;
1779         }
1780
1781         memcpy(wl->reg_ch_conf_last, tmp_ch_bitmap, sizeof(tmp_ch_bitmap));
1782         memset(wl->reg_ch_conf_pending, 0, sizeof(wl->reg_ch_conf_pending));
1783
1784 out:
1785         kfree(cmd);
1786         return ret;
1787 }
1788
1789 int wl12xx_cmd_config_fwlog(struct wl1271 *wl)
1790 {
1791         struct wl12xx_cmd_config_fwlog *cmd;
1792         int ret = 0;
1793
1794         wl1271_debug(DEBUG_CMD, "cmd config firmware logger");
1795
1796         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1797         if (!cmd) {
1798                 ret = -ENOMEM;
1799                 goto out;
1800         }
1801
1802         cmd->logger_mode = wl->conf.fwlog.mode;
1803         cmd->log_severity = wl->conf.fwlog.severity;
1804         cmd->timestamp = wl->conf.fwlog.timestamp;
1805         cmd->output = wl->conf.fwlog.output;
1806         cmd->threshold = wl->conf.fwlog.threshold;
1807
1808         ret = wl1271_cmd_send(wl, CMD_CONFIG_FWLOGGER, cmd, sizeof(*cmd), 0);
1809         if (ret < 0) {
1810                 wl1271_error("failed to send config firmware logger command");
1811                 goto out_free;
1812         }
1813
1814 out_free:
1815         kfree(cmd);
1816
1817 out:
1818         return ret;
1819 }
1820
1821 int wl12xx_cmd_start_fwlog(struct wl1271 *wl)
1822 {
1823         struct wl12xx_cmd_start_fwlog *cmd;
1824         int ret = 0;
1825
1826         wl1271_debug(DEBUG_CMD, "cmd start firmware logger");
1827
1828         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1829         if (!cmd) {
1830                 ret = -ENOMEM;
1831                 goto out;
1832         }
1833
1834         ret = wl1271_cmd_send(wl, CMD_START_FWLOGGER, cmd, sizeof(*cmd), 0);
1835         if (ret < 0) {
1836                 wl1271_error("failed to send start firmware logger command");
1837                 goto out_free;
1838         }
1839
1840 out_free:
1841         kfree(cmd);
1842
1843 out:
1844         return ret;
1845 }
1846
1847 int wl12xx_cmd_stop_fwlog(struct wl1271 *wl)
1848 {
1849         struct wl12xx_cmd_stop_fwlog *cmd;
1850         int ret = 0;
1851
1852         wl1271_debug(DEBUG_CMD, "cmd stop firmware logger");
1853
1854         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1855         if (!cmd) {
1856                 ret = -ENOMEM;
1857                 goto out;
1858         }
1859
1860         ret = wl1271_cmd_send(wl, CMD_STOP_FWLOGGER, cmd, sizeof(*cmd), 0);
1861         if (ret < 0) {
1862                 wl1271_error("failed to send stop firmware logger command");
1863                 goto out_free;
1864         }
1865
1866 out_free:
1867         kfree(cmd);
1868
1869 out:
1870         return ret;
1871 }
1872
1873 static int wl12xx_cmd_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1874                           u8 role_id, enum nl80211_band band, u8 channel)
1875 {
1876         struct wl12xx_cmd_roc *cmd;
1877         int ret = 0;
1878
1879         wl1271_debug(DEBUG_CMD, "cmd roc %d (%d)", channel, role_id);
1880
1881         if (WARN_ON(role_id == WL12XX_INVALID_ROLE_ID))
1882                 return -EINVAL;
1883
1884         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1885         if (!cmd) {
1886                 ret = -ENOMEM;
1887                 goto out;
1888         }
1889
1890         cmd->role_id = role_id;
1891         cmd->channel = channel;
1892         switch (band) {
1893         case NL80211_BAND_2GHZ:
1894                 cmd->band = WLCORE_BAND_2_4GHZ;
1895                 break;
1896         case NL80211_BAND_5GHZ:
1897                 cmd->band = WLCORE_BAND_5GHZ;
1898                 break;
1899         default:
1900                 wl1271_error("roc - unknown band: %d", (int)wlvif->band);
1901                 ret = -EINVAL;
1902                 goto out_free;
1903         }
1904
1905
1906         ret = wl1271_cmd_send(wl, CMD_REMAIN_ON_CHANNEL, cmd, sizeof(*cmd), 0);
1907         if (ret < 0) {
1908                 wl1271_error("failed to send ROC command");
1909                 goto out_free;
1910         }
1911
1912 out_free:
1913         kfree(cmd);
1914
1915 out:
1916         return ret;
1917 }
1918
1919 static int wl12xx_cmd_croc(struct wl1271 *wl, u8 role_id)
1920 {
1921         struct wl12xx_cmd_croc *cmd;
1922         int ret = 0;
1923
1924         wl1271_debug(DEBUG_CMD, "cmd croc (%d)", role_id);
1925
1926         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1927         if (!cmd) {
1928                 ret = -ENOMEM;
1929                 goto out;
1930         }
1931         cmd->role_id = role_id;
1932
1933         ret = wl1271_cmd_send(wl, CMD_CANCEL_REMAIN_ON_CHANNEL, cmd,
1934                               sizeof(*cmd), 0);
1935         if (ret < 0) {
1936                 wl1271_error("failed to send ROC command");
1937                 goto out_free;
1938         }
1939
1940 out_free:
1941         kfree(cmd);
1942
1943 out:
1944         return ret;
1945 }
1946
1947 int wl12xx_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 role_id,
1948                enum nl80211_band band, u8 channel)
1949 {
1950         int ret = 0;
1951
1952         if (WARN_ON(test_bit(role_id, wl->roc_map)))
1953                 return 0;
1954
1955         ret = wl12xx_cmd_roc(wl, wlvif, role_id, band, channel);
1956         if (ret < 0)
1957                 goto out;
1958
1959         __set_bit(role_id, wl->roc_map);
1960 out:
1961         return ret;
1962 }
1963
1964 int wl12xx_croc(struct wl1271 *wl, u8 role_id)
1965 {
1966         int ret = 0;
1967
1968         if (WARN_ON(!test_bit(role_id, wl->roc_map)))
1969                 return 0;
1970
1971         ret = wl12xx_cmd_croc(wl, role_id);
1972         if (ret < 0)
1973                 goto out;
1974
1975         __clear_bit(role_id, wl->roc_map);
1976
1977         /*
1978          * Rearm the tx watchdog when removing the last ROC. This prevents
1979          * recoveries due to just finished ROCs - when Tx hasn't yet had
1980          * a chance to get out.
1981          */
1982         if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES)
1983                 wl12xx_rearm_tx_watchdog_locked(wl);
1984 out:
1985         return ret;
1986 }
1987
1988 int wl12xx_cmd_stop_channel_switch(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1989 {
1990         struct wl12xx_cmd_stop_channel_switch *cmd;
1991         int ret;
1992
1993         wl1271_debug(DEBUG_ACX, "cmd stop channel switch");
1994
1995         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1996         if (!cmd) {
1997                 ret = -ENOMEM;
1998                 goto out;
1999         }
2000
2001         cmd->role_id = wlvif->role_id;
2002
2003         ret = wl1271_cmd_send(wl, CMD_STOP_CHANNEL_SWICTH, cmd, sizeof(*cmd), 0);
2004         if (ret < 0) {
2005                 wl1271_error("failed to stop channel switch command");
2006                 goto out_free;
2007         }
2008
2009 out_free:
2010         kfree(cmd);
2011
2012 out:
2013         return ret;
2014 }
2015
2016 /* start dev role and roc on its channel */
2017 int wl12xx_start_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2018                      enum nl80211_band band, int channel)
2019 {
2020         int ret;
2021
2022         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2023                       wlvif->bss_type == BSS_TYPE_IBSS)))
2024                 return -EINVAL;
2025
2026         /* the dev role is already started for p2p mgmt interfaces */
2027         if (!wlcore_is_p2p_mgmt(wlvif)) {
2028                 ret = wl12xx_cmd_role_enable(wl,
2029                                              wl12xx_wlvif_to_vif(wlvif)->addr,
2030                                              WL1271_ROLE_DEVICE,
2031                                              &wlvif->dev_role_id);
2032                 if (ret < 0)
2033                         goto out;
2034         }
2035
2036         ret = wl12xx_cmd_role_start_dev(wl, wlvif, band, channel);
2037         if (ret < 0)
2038                 goto out_disable;
2039
2040         ret = wl12xx_roc(wl, wlvif, wlvif->dev_role_id, band, channel);
2041         if (ret < 0)
2042                 goto out_stop;
2043
2044         return 0;
2045
2046 out_stop:
2047         wl12xx_cmd_role_stop_dev(wl, wlvif);
2048 out_disable:
2049         if (!wlcore_is_p2p_mgmt(wlvif))
2050                 wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2051 out:
2052         return ret;
2053 }
2054
2055 /* croc dev hlid, and stop the role */
2056 int wl12xx_stop_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2057 {
2058         int ret;
2059
2060         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2061                       wlvif->bss_type == BSS_TYPE_IBSS)))
2062                 return -EINVAL;
2063
2064         /* flush all pending packets */
2065         ret = wlcore_tx_work_locked(wl);
2066         if (ret < 0)
2067                 goto out;
2068
2069         if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
2070                 ret = wl12xx_croc(wl, wlvif->dev_role_id);
2071                 if (ret < 0)
2072                         goto out;
2073         }
2074
2075         ret = wl12xx_cmd_role_stop_dev(wl, wlvif);
2076         if (ret < 0)
2077                 goto out;
2078
2079         if (!wlcore_is_p2p_mgmt(wlvif)) {
2080                 ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2081                 if (ret < 0)
2082                         goto out;
2083         }
2084
2085 out:
2086         return ret;
2087 }
2088
2089 int wlcore_cmd_generic_cfg(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2090                            u8 feature, u8 enable, u8 value)
2091 {
2092         struct wlcore_cmd_generic_cfg *cmd;
2093         int ret;
2094
2095         wl1271_debug(DEBUG_CMD,
2096                      "cmd generic cfg (role %d feature %d enable %d value %d)",
2097                      wlvif->role_id, feature, enable, value);
2098
2099         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2100         if (!cmd)
2101                 return -ENOMEM;
2102
2103         cmd->role_id = wlvif->role_id;
2104         cmd->feature = feature;
2105         cmd->enable = enable;
2106         cmd->value = value;
2107
2108         ret = wl1271_cmd_send(wl, CMD_GENERIC_CFG, cmd, sizeof(*cmd), 0);
2109         if (ret < 0) {
2110                 wl1271_error("failed to send generic cfg command");
2111                 goto out_free;
2112         }
2113 out_free:
2114         kfree(cmd);
2115         return ret;
2116 }
2117 EXPORT_SYMBOL_GPL(wlcore_cmd_generic_cfg);