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/spi/spi.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ieee80211.h>
  29 #include <linux/slab.h>
  30
  31 #include "wlcore.h"
  32 #include "debug.h"
  33 #include "io.h"
  34 #include "acx.h"
  35 #include "wl12xx_80211.h"
  36 #include "cmd.h"
  37 #include "event.h"
  38 #include "tx.h"
  39 #include "hw_ops.h"
  40
  41 #define WL1271_CMD_FAST_POLL_COUNT       50
  42 #define WL1271_WAIT_EVENT_FAST_POLL_COUNT 20
  43
  44 /*
  45  * send command to firmware
  46  *
  47  * @wl: wl struct
  48  * @id: command id
  49  * @buf: buffer containing the command, must work with dma
  50  * @len: length of the buffer
  51  * return the cmd status code on success.
  52  */
  53 static int __wlcore_cmd_send(struct wl1271 *wl, u16 id, void *buf,
  54                              size_t len, size_t res_len)
  55 {
  56         struct wl1271_cmd_header *cmd;
  57         unsigned long timeout;
  58         u32 intr;
  59         int ret;
  60         u16 status;
  61         u16 poll_count = 0;
  62
  63         if (WARN_ON(unlikely(wl->state == WLCORE_STATE_RESTARTING)))
  64                 return -EIO;
  65
  66         cmd = buf;
  67         cmd->id = cpu_to_le16(id);
  68         cmd->status = 0;
  69
  70         WARN_ON(len % 4 != 0);
  71         WARN_ON(test_bit(WL1271_FLAG_IN_ELP, &wl->flags));
  72
  73         ret = wlcore_write(wl, wl->cmd_box_addr, buf, len, false);
  74         if (ret < 0)
  75                 return ret;
  76
  77         /*
  78          * TODO: we just need this because one bit is in a different
  79          * place.  Is there any better way?
  80          */
  81         ret = wl->ops->trigger_cmd(wl, wl->cmd_box_addr, buf, len);
  82         if (ret < 0)
  83                 return ret;
  84
  85         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  86
  87         ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
  88         if (ret < 0)
  89                 return ret;
  90
  91         while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
  92                 if (time_after(jiffies, timeout)) {
  93                         wl1271_error("command complete timeout");
  94                         return -ETIMEDOUT;
  95                 }
  96
  97                 poll_count++;
  98                 if (poll_count < WL1271_CMD_FAST_POLL_COUNT)
  99                         udelay(10);
 100                 else
 101                         msleep(1);
 102
 103                 ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
 104                 if (ret < 0)
 105                         return ret;
 106         }
 107
 108         /* read back the status code of the command */
 109         if (res_len == 0)
 110                 res_len = sizeof(struct wl1271_cmd_header);
 111
 112         ret = wlcore_read(wl, wl->cmd_box_addr, cmd, res_len, false);
 113         if (ret < 0)
 114                 return ret;
 115
 116         status = le16_to_cpu(cmd->status);
 117
 118         ret = wlcore_write_reg(wl, REG_INTERRUPT_ACK,
 119                                WL1271_ACX_INTR_CMD_COMPLETE);
 120         if (ret < 0)
 121                 return ret;
 122
 123         return status;
 124 }
 125
 126 /*
 127  * send command to fw and return cmd status on success
 128  * valid_rets contains a bitmap of allowed error codes
 129  */
 130 int wlcore_cmd_send_failsafe(struct wl1271 *wl, u16 id, void *buf, size_t len,
 131                              size_t res_len, unsigned long valid_rets)
 132 {
 133         int ret = __wlcore_cmd_send(wl, id, buf, len, res_len);
 134
 135         if (ret < 0)
 136                 goto fail;
 137
 138         /* success is always a valid status */
 139         valid_rets |= BIT(CMD_STATUS_SUCCESS);
 140
 141         if (ret >= MAX_COMMAND_STATUS ||
 142             !test_bit(ret, &valid_rets)) {
 143                 wl1271_error("command execute failure %d", ret);
 144                 ret = -EIO;
 145                 goto fail;
 146         }
 147         return ret;
 148 fail:
 149         wl12xx_queue_recovery_work(wl);
 150         return ret;
 151 }
 152 EXPORT_SYMBOL_GPL(wl1271_cmd_send);
 153
 154 /*
 155  * wrapper for wlcore_cmd_send that accept only CMD_STATUS_SUCCESS
 156  * return 0 on success.
 157  */
 158 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
 159                     size_t res_len)
 160 {
 161         int ret = wlcore_cmd_send_failsafe(wl, id, buf, len, res_len, 0);
 162
 163         if (ret < 0)
 164                 return ret;
 165         return 0;
 166 }
 167
 168 /*
 169  * Poll the mailbox event field until any of the bits in the mask is set or a
 170  * timeout occurs (WL1271_EVENT_TIMEOUT in msecs)
 171  */
 172 int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 173                                          u32 mask, bool *timeout)
 174 {
 175         u32 *events_vector;
 176         u32 event;
 177         unsigned long timeout_time;
 178         u16 poll_count = 0;
 179         int ret = 0;
 180
 181         *timeout = false;
 182
 183         events_vector = kmalloc(sizeof(*events_vector), GFP_KERNEL | GFP_DMA);
 184         if (!events_vector)
 185                 return -ENOMEM;
 186
 187         timeout_time = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
 188
 189         do {
 190                 if (time_after(jiffies, timeout_time)) {
 191                         wl1271_debug(DEBUG_CMD, "timeout waiting for event %d",
 192                                      (int)mask);
 193                         *timeout = true;
 194                         goto out;
 195                 }
 196
 197                 poll_count++;
 198                 if (poll_count < WL1271_WAIT_EVENT_FAST_POLL_COUNT)
 199                         usleep_range(50, 51);
 200                 else
 201                         usleep_range(1000, 5000);
 202
 203                 /* read from both event fields */
 204                 ret = wlcore_read(wl, wl->mbox_ptr[0], events_vector,
 205                                   sizeof(*events_vector), false);
 206                 if (ret < 0)
 207                         goto out;
 208
 209                 event = *events_vector & mask;
 210
 211                 ret = wlcore_read(wl, wl->mbox_ptr[1], events_vector,
 212                                   sizeof(*events_vector), false);
 213                 if (ret < 0)
 214                         goto out;
 215
 216                 event |= *events_vector & mask;
 217         } while (!event);
 218
 219 out:
 220         kfree(events_vector);
 221         return ret;
 222 }
 223 EXPORT_SYMBOL_GPL(wlcore_cmd_wait_for_event_or_timeout);
 224
 225 int wl12xx_cmd_role_enable(struct wl1271 *wl, u8 *addr, u8 role_type,
 226                            u8 *role_id)
 227 {
 228         struct wl12xx_cmd_role_enable *cmd;
 229         int ret;
 230
 231         wl1271_debug(DEBUG_CMD, "cmd role enable");
 232
 233         if (WARN_ON(*role_id != WL12XX_INVALID_ROLE_ID))
 234                 return -EBUSY;
 235
 236         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 237         if (!cmd) {
 238                 ret = -ENOMEM;
 239                 goto out;
 240         }
 241
 242         /* get role id */
 243         cmd->role_id = find_first_zero_bit(wl->roles_map, WL12XX_MAX_ROLES);
 244         if (cmd->role_id >= WL12XX_MAX_ROLES) {
 245                 ret = -EBUSY;
 246                 goto out_free;
 247         }
 248
 249         memcpy(cmd->mac_address, addr, ETH_ALEN);
 250         cmd->role_type = role_type;
 251
 252         ret = wl1271_cmd_send(wl, CMD_ROLE_ENABLE, cmd, sizeof(*cmd), 0);
 253         if (ret < 0) {
 254                 wl1271_error("failed to initiate cmd role enable");
 255                 goto out_free;
 256         }
 257
 258         __set_bit(cmd->role_id, wl->roles_map);
 259         *role_id = cmd->role_id;
 260
 261 out_free:
 262         kfree(cmd);
 263
 264 out:
 265         return ret;
 266 }
 267
 268 int wl12xx_cmd_role_disable(struct wl1271 *wl, u8 *role_id)
 269 {
 270         struct wl12xx_cmd_role_disable *cmd;
 271         int ret;
 272
 273         wl1271_debug(DEBUG_CMD, "cmd role disable");
 274
 275         if (WARN_ON(*role_id == WL12XX_INVALID_ROLE_ID))
 276                 return -ENOENT;
 277
 278         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 279         if (!cmd) {
 280                 ret = -ENOMEM;
 281                 goto out;
 282         }
 283         cmd->role_id = *role_id;
 284
 285         ret = wl1271_cmd_send(wl, CMD_ROLE_DISABLE, cmd, sizeof(*cmd), 0);
 286         if (ret < 0) {
 287                 wl1271_error("failed to initiate cmd role disable");
 288                 goto out_free;
 289         }
 290
 291         __clear_bit(*role_id, wl->roles_map);
 292         *role_id = WL12XX_INVALID_ROLE_ID;
 293
 294 out_free:
 295         kfree(cmd);
 296
 297 out:
 298         return ret;
 299 }
 300
 301 static int wlcore_get_new_session_id(struct wl1271 *wl, u8 hlid)
 302 {
 303         if (wl->session_ids[hlid] >= SESSION_COUNTER_MAX)
 304                 wl->session_ids[hlid] = 0;
 305
 306         wl->session_ids[hlid]++;
 307
 308         return wl->session_ids[hlid];
 309 }
 310
 311 int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 312 {
 313         unsigned long flags;
 314         u8 link = find_first_zero_bit(wl->links_map, WL12XX_MAX_LINKS);
 315         if (link >= WL12XX_MAX_LINKS)
 316                 return -EBUSY;
 317
 318         wl->session_ids[link] = wlcore_get_new_session_id(wl, link);
 319
 320         /* these bits are used by op_tx */
 321         spin_lock_irqsave(&wl->wl_lock, flags);
 322         __set_bit(link, wl->links_map);
 323         __set_bit(link, wlvif->links_map);
 324         spin_unlock_irqrestore(&wl->wl_lock, flags);
 325
 326         /* take the last "freed packets" value from the current FW status */
 327         wl->links[link].prev_freed_pkts =
 328                         wl->fw_status_2->counters.tx_lnk_free_pkts[link];
 329         wl->links[link].wlvif = wlvif;
 330
 331         /*
 332          * Take saved value for total freed packets from wlvif, in case this is
 333          * recovery/resume
 334          */
 335         if (wlvif->bss_type != BSS_TYPE_AP_BSS)
 336                 wl->links[link].total_freed_pkts = wlvif->total_freed_pkts;
 337
 338         *hlid = link;
 339
 340         wl->active_link_count++;
 341         return 0;
 342 }
 343
 344 void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 345 {
 346         unsigned long flags;
 347
 348         if (*hlid == WL12XX_INVALID_LINK_ID)
 349                 return;
 350
 351         /* these bits are used by op_tx */
 352         spin_lock_irqsave(&wl->wl_lock, flags);
 353         __clear_bit(*hlid, wl->links_map);
 354         __clear_bit(*hlid, wlvif->links_map);
 355         spin_unlock_irqrestore(&wl->wl_lock, flags);
 356
 357         wl->links[*hlid].allocated_pkts = 0;
 358         wl->links[*hlid].prev_freed_pkts = 0;
 359         wl->links[*hlid].ba_bitmap = 0;
 360         memset(wl->links[*hlid].addr, 0, ETH_ALEN);
 361
 362         /*
 363          * At this point op_tx() will not add more packets to the queues. We
 364          * can purge them.
 365          */
 366         wl1271_tx_reset_link_queues(wl, *hlid);
 367         wl->links[*hlid].wlvif = NULL;
 368
 369         if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
 370             (wlvif->bss_type == BSS_TYPE_AP_BSS &&
 371              *hlid == wlvif->ap.bcast_hlid)) {
 372                 /*
 373                  * save the total freed packets in the wlvif, in case this is
 374                  * recovery or suspend
 375                  */
 376                 wlvif->total_freed_pkts = wl->links[*hlid].total_freed_pkts;
 377
 378                 /*
 379                  * increment the initial seq number on recovery to account for
 380                  * transmitted packets that we haven't yet got in the FW status
 381                  */
 382                 if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
 383                         wlvif->total_freed_pkts +=
 384                                         WL1271_TX_SQN_POST_RECOVERY_PADDING;
 385         }
 386
 387         wl->links[*hlid].total_freed_pkts = 0;
 388
 389         *hlid = WL12XX_INVALID_LINK_ID;
 390         wl->active_link_count--;
 391         WARN_ON_ONCE(wl->active_link_count < 0);
 392 }
 393
 394 static u8 wlcore_get_native_channel_type(u8 nl_channel_type)
 395 {
 396         switch (nl_channel_type) {
 397         case NL80211_CHAN_NO_HT:
 398                 return WLCORE_CHAN_NO_HT;
 399         case NL80211_CHAN_HT20:
 400                 return WLCORE_CHAN_HT20;
 401         case NL80211_CHAN_HT40MINUS:
 402                 return WLCORE_CHAN_HT40MINUS;
 403         case NL80211_CHAN_HT40PLUS:
 404                 return WLCORE_CHAN_HT40PLUS;
 405         default:
 406                 WARN_ON(1);
 407                 return WLCORE_CHAN_NO_HT;
 408         }
 409 }
 410
 411 static int wl12xx_cmd_role_start_dev(struct wl1271 *wl,
 412                                      struct wl12xx_vif *wlvif,
 413                                      enum ieee80211_band band,
 414                                      int channel)
 415 {
 416         struct wl12xx_cmd_role_start *cmd;
 417         int ret;
 418
 419         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 420         if (!cmd) {
 421                 ret = -ENOMEM;
 422                 goto out;
 423         }
 424
 425         wl1271_debug(DEBUG_CMD, "cmd role start dev %d", wlvif->dev_role_id);
 426
 427         cmd->role_id = wlvif->dev_role_id;
 428         if (band == IEEE80211_BAND_5GHZ)
 429                 cmd->band = WLCORE_BAND_5GHZ;
 430         cmd->channel = channel;
 431
 432         if (wlvif->dev_hlid == WL12XX_INVALID_LINK_ID) {
 433                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->dev_hlid);
 434                 if (ret)
 435                         goto out_free;
 436         }
 437         cmd->device.hlid = wlvif->dev_hlid;
 438         cmd->device.session = wl->session_ids[wlvif->dev_hlid];
 439
 440         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d",
 441                      cmd->role_id, cmd->device.hlid, cmd->device.session);
 442
 443         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 444         if (ret < 0) {
 445                 wl1271_error("failed to initiate cmd role enable");
 446                 goto err_hlid;
 447         }
 448
 449         goto out_free;
 450
 451 err_hlid:
 452         /* clear links on error */
 453         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 454
 455 out_free:
 456         kfree(cmd);
 457
 458 out:
 459         return ret;
 460 }
 461
 462 static int wl12xx_cmd_role_stop_dev(struct wl1271 *wl,
 463                                     struct wl12xx_vif *wlvif)
 464 {
 465         struct wl12xx_cmd_role_stop *cmd;
 466         int ret;
 467
 468         if (WARN_ON(wlvif->dev_hlid == WL12XX_INVALID_LINK_ID))
 469                 return -EINVAL;
 470
 471         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 472         if (!cmd) {
 473                 ret = -ENOMEM;
 474                 goto out;
 475         }
 476
 477         wl1271_debug(DEBUG_CMD, "cmd role stop dev");
 478
 479         cmd->role_id = wlvif->dev_role_id;
 480         cmd->disc_type = DISCONNECT_IMMEDIATE;
 481         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 482
 483         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 484         if (ret < 0) {
 485                 wl1271_error("failed to initiate cmd role stop");
 486                 goto out_free;
 487         }
 488
 489         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 490
 491 out_free:
 492         kfree(cmd);
 493
 494 out:
 495         return ret;
 496 }
 497
 498 int wl12xx_cmd_role_start_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 499 {
 500         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 501         struct wl12xx_cmd_role_start *cmd;
 502         u32 supported_rates;
 503         int ret;
 504
 505         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 506         if (!cmd) {
 507                 ret = -ENOMEM;
 508                 goto out;
 509         }
 510
 511         wl1271_debug(DEBUG_CMD, "cmd role start sta %d", wlvif->role_id);
 512
 513         cmd->role_id = wlvif->role_id;
 514         if (wlvif->band == IEEE80211_BAND_5GHZ)
 515                 cmd->band = WLCORE_BAND_5GHZ;
 516         cmd->channel = wlvif->channel;
 517         cmd->sta.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 518         cmd->sta.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 519         cmd->sta.ssid_type = WL12XX_SSID_TYPE_ANY;
 520         cmd->sta.ssid_len = wlvif->ssid_len;
 521         memcpy(cmd->sta.ssid, wlvif->ssid, wlvif->ssid_len);
 522         memcpy(cmd->sta.bssid, vif->bss_conf.bssid, ETH_ALEN);
 523
 524         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
 525                           wlcore_hw_sta_get_ap_rate_mask(wl, wlvif);
 526         if (wlvif->p2p)
 527                 supported_rates &= ~CONF_TX_CCK_RATES;
 528
 529         cmd->sta.local_rates = cpu_to_le32(supported_rates);
 530
 531         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 532
 533         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 534                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 535                 if (ret)
 536                         goto out_free;
 537         }
 538         cmd->sta.hlid = wlvif->sta.hlid;
 539         cmd->sta.session = wl->session_ids[wlvif->sta.hlid];
 540         /*
 541          * We don't have the correct remote rates in this stage.  The
 542          * rates will be reconfigured later, after association, if the
 543          * firmware supports ACX_PEER_CAP.  Otherwise, there's nothing
 544          * we can do, so use all supported_rates here.
 545          */
 546         cmd->sta.remote_rates = cpu_to_le32(supported_rates);
 547
 548         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 549                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 550                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 551                      wlvif->basic_rate_set, wlvif->rate_set);
 552
 553         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 554         if (ret < 0) {
 555                 wl1271_error("failed to initiate cmd role start sta");
 556                 goto err_hlid;
 557         }
 558
 559         wlvif->sta.role_chan_type = wlvif->channel_type;
 560         goto out_free;
 561
 562 err_hlid:
 563         /* clear links on error. */
 564         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 565
 566 out_free:
 567         kfree(cmd);
 568
 569 out:
 570         return ret;
 571 }
 572
 573 /* use this function to stop ibss as well */
 574 int wl12xx_cmd_role_stop_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 575 {
 576         struct wl12xx_cmd_role_stop *cmd;
 577         int ret;
 578
 579         if (WARN_ON(wlvif->sta.hlid == WL12XX_INVALID_LINK_ID))
 580                 return -EINVAL;
 581
 582         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 583         if (!cmd) {
 584                 ret = -ENOMEM;
 585                 goto out;
 586         }
 587
 588         wl1271_debug(DEBUG_CMD, "cmd role stop sta %d", wlvif->role_id);
 589
 590         cmd->role_id = wlvif->role_id;
 591         cmd->disc_type = DISCONNECT_IMMEDIATE;
 592         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 593
 594         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 595         if (ret < 0) {
 596                 wl1271_error("failed to initiate cmd role stop sta");
 597                 goto out_free;
 598         }
 599
 600         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 601
 602 out_free:
 603         kfree(cmd);
 604
 605 out:
 606         return ret;
 607 }
 608
 609 int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 610 {
 611         struct wl12xx_cmd_role_start *cmd;
 612         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 613         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 614         u32 supported_rates;
 615         int ret;
 616
 617         wl1271_debug(DEBUG_CMD, "cmd role start ap %d", wlvif->role_id);
 618
 619         /* trying to use hidden SSID with an old hostapd version */
 620         if (wlvif->ssid_len == 0 && !bss_conf->hidden_ssid) {
 621                 wl1271_error("got a null SSID from beacon/bss");
 622                 ret = -EINVAL;
 623                 goto out;
 624         }
 625
 626         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 627         if (!cmd) {
 628                 ret = -ENOMEM;
 629                 goto out;
 630         }
 631
 632         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.global_hlid);
 633         if (ret < 0)
 634                 goto out_free;
 635
 636         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 637         if (ret < 0)
 638                 goto out_free_global;
 639
 640         /* use the previous security seq, if this is a recovery/resume */
 641         wl->links[wlvif->ap.bcast_hlid].total_freed_pkts =
 642                                                 wlvif->total_freed_pkts;
 643
 644         cmd->role_id = wlvif->role_id;
 645         cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 646         cmd->ap.bss_index = WL1271_AP_BSS_INDEX;
 647         cmd->ap.global_hlid = wlvif->ap.global_hlid;
 648         cmd->ap.broadcast_hlid = wlvif->ap.bcast_hlid;
 649         cmd->ap.global_session_id = wl->session_ids[wlvif->ap.global_hlid];
 650         cmd->ap.bcast_session_id = wl->session_ids[wlvif->ap.bcast_hlid];
 651         cmd->ap.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 652         cmd->ap.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 653         cmd->ap.dtim_interval = bss_conf->dtim_period;
 654         cmd->ap.beacon_expiry = WL1271_AP_DEF_BEACON_EXP;
 655         /* FIXME: Change when adding DFS */
 656         cmd->ap.reset_tsf = 1;  /* By default reset AP TSF */
 657         cmd->ap.wmm = wlvif->wmm_enabled;
 658         cmd->channel = wlvif->channel;
 659         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 660
 661         if (!bss_conf->hidden_ssid) {
 662                 /* take the SSID from the beacon for backward compatibility */
 663                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_PUBLIC;
 664                 cmd->ap.ssid_len = wlvif->ssid_len;
 665                 memcpy(cmd->ap.ssid, wlvif->ssid, wlvif->ssid_len);
 666         } else {
 667                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_HIDDEN;
 668                 cmd->ap.ssid_len = bss_conf->ssid_len;
 669                 memcpy(cmd->ap.ssid, bss_conf->ssid, bss_conf->ssid_len);
 670         }
 671
 672         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
 673                 wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif);
 674         if (wlvif->p2p)
 675                 supported_rates &= ~CONF_TX_CCK_RATES;
 676
 677         wl1271_debug(DEBUG_CMD, "cmd role start ap with supported_rates 0x%08x",
 678                      supported_rates);
 679
 680         cmd->ap.local_rates = cpu_to_le32(supported_rates);
 681
 682         switch (wlvif->band) {
 683         case IEEE80211_BAND_2GHZ:
 684                 cmd->band = WLCORE_BAND_2_4GHZ;
 685                 break;
 686         case IEEE80211_BAND_5GHZ:
 687                 cmd->band = WLCORE_BAND_5GHZ;
 688                 break;
 689         default:
 690                 wl1271_warning("ap start - unknown band: %d", (int)wlvif->band);
 691                 cmd->band = WLCORE_BAND_2_4GHZ;
 692                 break;
 693         }
 694
 695         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 696         if (ret < 0) {
 697                 wl1271_error("failed to initiate cmd role start ap");
 698                 goto out_free_bcast;
 699         }
 700
 701         goto out_free;
 702
 703 out_free_bcast:
 704         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 705
 706 out_free_global:
 707         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 708
 709 out_free:
 710         kfree(cmd);
 711
 712 out:
 713         return ret;
 714 }
 715
 716 int wl12xx_cmd_role_stop_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 717 {
 718         struct wl12xx_cmd_role_stop *cmd;
 719         int ret;
 720
 721         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 722         if (!cmd) {
 723                 ret = -ENOMEM;
 724                 goto out;
 725         }
 726
 727         wl1271_debug(DEBUG_CMD, "cmd role stop ap %d", wlvif->role_id);
 728
 729         cmd->role_id = wlvif->role_id;
 730
 731         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 732         if (ret < 0) {
 733                 wl1271_error("failed to initiate cmd role stop ap");
 734                 goto out_free;
 735         }
 736
 737         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 738         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 739
 740 out_free:
 741         kfree(cmd);
 742
 743 out:
 744         return ret;
 745 }
 746
 747 int wl12xx_cmd_role_start_ibss(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 748 {
 749         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 750         struct wl12xx_cmd_role_start *cmd;
 751         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 752         int ret;
 753
 754         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 755         if (!cmd) {
 756                 ret = -ENOMEM;
 757                 goto out;
 758         }
 759
 760         wl1271_debug(DEBUG_CMD, "cmd role start ibss %d", wlvif->role_id);
 761
 762         cmd->role_id = wlvif->role_id;
 763         if (wlvif->band == IEEE80211_BAND_5GHZ)
 764                 cmd->band = WLCORE_BAND_5GHZ;
 765         cmd->channel = wlvif->channel;
 766         cmd->ibss.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 767         cmd->ibss.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 768         cmd->ibss.dtim_interval = bss_conf->dtim_period;
 769         cmd->ibss.ssid_type = WL12XX_SSID_TYPE_ANY;
 770         cmd->ibss.ssid_len = wlvif->ssid_len;
 771         memcpy(cmd->ibss.ssid, wlvif->ssid, wlvif->ssid_len);
 772         memcpy(cmd->ibss.bssid, vif->bss_conf.bssid, ETH_ALEN);
 773         cmd->sta.local_rates = cpu_to_le32(wlvif->rate_set);
 774
 775         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 776                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 777                 if (ret)
 778                         goto out_free;
 779         }
 780         cmd->ibss.hlid = wlvif->sta.hlid;
 781         cmd->ibss.remote_rates = cpu_to_le32(wlvif->rate_set);
 782
 783         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 784                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 785                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 786                      wlvif->basic_rate_set, wlvif->rate_set);
 787
 788         wl1271_debug(DEBUG_CMD, "vif->bss_conf.bssid = %pM",
 789                      vif->bss_conf.bssid);
 790
 791         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 792         if (ret < 0) {
 793                 wl1271_error("failed to initiate cmd role enable");
 794                 goto err_hlid;
 795         }
 796
 797         goto out_free;
 798
 799 err_hlid:
 800         /* clear links on error. */
 801         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 802
 803 out_free:
 804         kfree(cmd);
 805
 806 out:
 807         return ret;
 808 }
 809
 810
 811 /**
 812  * send test command to firmware
 813  *
 814  * @wl: wl struct
 815  * @buf: buffer containing the command, with all headers, must work with dma
 816  * @len: length of the buffer
 817  * @answer: is answer needed
 818  */
 819 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 820 {
 821         int ret;
 822         size_t res_len = 0;
 823
 824         wl1271_debug(DEBUG_CMD, "cmd test");
 825
 826         if (answer)
 827                 res_len = buf_len;
 828
 829         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 830
 831         if (ret < 0) {
 832                 wl1271_warning("TEST command failed");
 833                 return ret;
 834         }
 835
 836         return ret;
 837 }
 838 EXPORT_SYMBOL_GPL(wl1271_cmd_test);
 839
 840 /**
 841  * read acx from firmware
 842  *
 843  * @wl: wl struct
 844  * @id: acx id
 845  * @buf: buffer for the response, including all headers, must work with dma
 846  * @len: length of buf
 847  */
 848 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 849 {
 850         struct acx_header *acx = buf;
 851         int ret;
 852
 853         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 854
 855         acx->id = cpu_to_le16(id);
 856
 857         /* payload length, does not include any headers */
 858         acx->len = cpu_to_le16(len - sizeof(*acx));
 859
 860         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
 861         if (ret < 0)
 862                 wl1271_error("INTERROGATE command failed");
 863
 864         return ret;
 865 }
 866
 867 /**
 868  * write acx value to firmware
 869  *
 870  * @wl: wl struct
 871  * @id: acx id
 872  * @buf: buffer containing acx, including all headers, must work with dma
 873  * @len: length of buf
 874  * @valid_rets: bitmap of valid cmd status codes (i.e. return values).
 875  * return the cmd status on success.
 876  */
 877 int wlcore_cmd_configure_failsafe(struct wl1271 *wl, u16 id, void *buf,
 878                                   size_t len, unsigned long valid_rets)
 879 {
 880         struct acx_header *acx = buf;
 881         int ret;
 882
 883         wl1271_debug(DEBUG_CMD, "cmd configure (%d)", id);
 884
 885         acx->id = cpu_to_le16(id);
 886
 887         /* payload length, does not include any headers */
 888         acx->len = cpu_to_le16(len - sizeof(*acx));
 889
 890         ret = wlcore_cmd_send_failsafe(wl, CMD_CONFIGURE, acx, len, 0,
 891                                        valid_rets);
 892         if (ret < 0) {
 893                 wl1271_warning("CONFIGURE command NOK");
 894                 return ret;
 895         }
 896
 897         return ret;
 898 }
 899
 900 /*
 901  * wrapper for wlcore_cmd_configure that accepts only success status.
 902  * return 0 on success
 903  */
 904 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 905 {
 906         int ret = wlcore_cmd_configure_failsafe(wl, id, buf, len, 0);
 907
 908         if (ret < 0)
 909                 return ret;
 910         return 0;
 911 }
 912 EXPORT_SYMBOL_GPL(wl1271_cmd_configure);
 913
 914 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 915 {
 916         struct cmd_enabledisable_path *cmd;
 917         int ret;
 918         u16 cmd_rx, cmd_tx;
 919
 920         wl1271_debug(DEBUG_CMD, "cmd data path");
 921
 922         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 923         if (!cmd) {
 924                 ret = -ENOMEM;
 925                 goto out;
 926         }
 927
 928         /* the channel here is only used for calibration, so hardcoded to 1 */
 929         cmd->channel = 1;
 930
 931         if (enable) {
 932                 cmd_rx = CMD_ENABLE_RX;
 933                 cmd_tx = CMD_ENABLE_TX;
 934         } else {
 935                 cmd_rx = CMD_DISABLE_RX;
 936                 cmd_tx = CMD_DISABLE_TX;
 937         }
 938
 939         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 940         if (ret < 0) {
 941                 wl1271_error("rx %s cmd for channel %d failed",
 942                              enable ? "start" : "stop", cmd->channel);
 943                 goto out;
 944         }
 945
 946         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 947                      enable ? "start" : "stop", cmd->channel);
 948
 949         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 950         if (ret < 0) {
 951                 wl1271_error("tx %s cmd for channel %d failed",
 952                              enable ? "start" : "stop", cmd->channel);
 953                 goto out;
 954         }
 955
 956         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 957                      enable ? "start" : "stop", cmd->channel);
 958
 959 out:
 960         kfree(cmd);
 961         return ret;
 962 }
 963 EXPORT_SYMBOL_GPL(wl1271_cmd_data_path);
 964
 965 int wl1271_cmd_ps_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 966                        u8 ps_mode, u16 auto_ps_timeout)
 967 {
 968         struct wl1271_cmd_ps_params *ps_params = NULL;
 969         int ret = 0;
 970
 971         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 972
 973         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 974         if (!ps_params) {
 975                 ret = -ENOMEM;
 976                 goto out;
 977         }
 978
 979         ps_params->role_id = wlvif->role_id;
 980         ps_params->ps_mode = ps_mode;
 981         ps_params->auto_ps_timeout = auto_ps_timeout;
 982
 983         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
 984                               sizeof(*ps_params), 0);
 985         if (ret < 0) {
 986                 wl1271_error("cmd set_ps_mode failed");
 987                 goto out;
 988         }
 989
 990 out:
 991         kfree(ps_params);
 992         return ret;
 993 }
 994
 995 int wl1271_cmd_template_set(struct wl1271 *wl, u8 role_id,
 996                             u16 template_id, void *buf, size_t buf_len,
 997                             int index, u32 rates)
 998 {
 999         struct wl1271_cmd_template_set *cmd;
1000         int ret = 0;
1001
1002         wl1271_debug(DEBUG_CMD, "cmd template_set %d (role %d)",
1003                      template_id, role_id);
1004
1005         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
1006         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
1007
1008         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1009         if (!cmd) {
1010                 ret = -ENOMEM;
1011                 goto out;
1012         }
1013
1014         /* during initialization wlvif is NULL */
1015         cmd->role_id = role_id;
1016         cmd->len = cpu_to_le16(buf_len);
1017         cmd->template_type = template_id;
1018         cmd->enabled_rates = cpu_to_le32(rates);
1019         cmd->short_retry_limit = wl->conf.tx.tmpl_short_retry_limit;
1020         cmd->long_retry_limit = wl->conf.tx.tmpl_long_retry_limit;
1021         cmd->index = index;
1022
1023         if (buf)
1024                 memcpy(cmd->template_data, buf, buf_len);
1025
1026         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
1027         if (ret < 0) {
1028                 wl1271_warning("cmd set_template failed: %d", ret);
1029                 goto out_free;
1030         }
1031
1032 out_free:
1033         kfree(cmd);
1034
1035 out:
1036         return ret;
1037 }
1038
1039 int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1040 {
1041         struct sk_buff *skb = NULL;
1042         int size;
1043         void *ptr;
1044         int ret = -ENOMEM;
1045
1046
1047         if (wlvif->bss_type == BSS_TYPE_IBSS) {
1048                 size = sizeof(struct wl12xx_null_data_template);
1049                 ptr = NULL;
1050         } else {
1051                 skb = ieee80211_nullfunc_get(wl->hw,
1052                                              wl12xx_wlvif_to_vif(wlvif));
1053                 if (!skb)
1054                         goto out;
1055                 size = skb->len;
1056                 ptr = skb->data;
1057         }
1058
1059         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1060                                       CMD_TEMPL_NULL_DATA, ptr, size, 0,
1061                                       wlvif->basic_rate);
1062
1063 out:
1064         dev_kfree_skb(skb);
1065         if (ret)
1066                 wl1271_warning("cmd buld null data failed %d", ret);
1067
1068         return ret;
1069
1070 }
1071
1072 int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,
1073                                    struct wl12xx_vif *wlvif)
1074 {
1075         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1076         struct sk_buff *skb = NULL;
1077         int ret = -ENOMEM;
1078
1079         skb = ieee80211_nullfunc_get(wl->hw, vif);
1080         if (!skb)
1081                 goto out;
1082
1083         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV,
1084                                       skb->data, skb->len,
1085                                       wlvif->sta.klv_template_id,
1086                                       wlvif->basic_rate);
1087
1088 out:
1089         dev_kfree_skb(skb);
1090         if (ret)
1091                 wl1271_warning("cmd build klv null data failed %d", ret);
1092
1093         return ret;
1094
1095 }
1096
1097 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1098                              u16 aid)
1099 {
1100         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1101         struct sk_buff *skb;
1102         int ret = 0;
1103
1104         skb = ieee80211_pspoll_get(wl->hw, vif);
1105         if (!skb)
1106                 goto out;
1107
1108         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1109                                       CMD_TEMPL_PS_POLL, skb->data,
1110                                       skb->len, 0, wlvif->basic_rate_set);
1111
1112 out:
1113         dev_kfree_skb(skb);
1114         return ret;
1115 }
1116
1117 int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1118                                u8 role_id, u8 band,
1119                                const u8 *ssid, size_t ssid_len,
1120                                const u8 *ie, size_t ie_len, bool sched_scan)
1121 {
1122         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1123         struct sk_buff *skb;
1124         int ret;
1125         u32 rate;
1126         u16 template_id_2_4 = wl->scan_templ_id_2_4;
1127         u16 template_id_5 = wl->scan_templ_id_5;
1128
1129         skb = ieee80211_probereq_get(wl->hw, vif, ssid, ssid_len,
1130                                      ie_len);
1131         if (!skb) {
1132                 ret = -ENOMEM;
1133                 goto out;
1134         }
1135         if (ie_len)
1136                 memcpy(skb_put(skb, ie_len), ie, ie_len);
1137
1138         wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", skb->data, skb->len);
1139
1140         if (sched_scan &&
1141             (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) {
1142                 template_id_2_4 = wl->sched_scan_templ_id_2_4;
1143                 template_id_5 = wl->sched_scan_templ_id_5;
1144         }
1145
1146         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
1147         if (band == IEEE80211_BAND_2GHZ)
1148                 ret = wl1271_cmd_template_set(wl, role_id,
1149                                               template_id_2_4,
1150                                               skb->data, skb->len, 0, rate);
1151         else
1152                 ret = wl1271_cmd_template_set(wl, role_id,
1153                                               template_id_5,
1154                                               skb->data, skb->len, 0, rate);
1155
1156 out:
1157         dev_kfree_skb(skb);
1158         return ret;
1159 }
1160 EXPORT_SYMBOL_GPL(wl12xx_cmd_build_probe_req);
1161
1162 struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,
1163                                               struct wl12xx_vif *wlvif,
1164                                               struct sk_buff *skb)
1165 {
1166         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1167         int ret;
1168         u32 rate;
1169
1170         if (!skb)
1171                 skb = ieee80211_ap_probereq_get(wl->hw, vif);
1172         if (!skb)
1173                 goto out;
1174
1175         wl1271_dump(DEBUG_SCAN, "AP PROBE REQ: ", skb->data, skb->len);
1176
1177         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]);
1178         if (wlvif->band == IEEE80211_BAND_2GHZ)
1179                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1180                                               CMD_TEMPL_CFG_PROBE_REQ_2_4,
1181                                               skb->data, skb->len, 0, rate);
1182         else
1183                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1184                                               CMD_TEMPL_CFG_PROBE_REQ_5,
1185                                               skb->data, skb->len, 0, rate);
1186
1187         if (ret < 0)
1188                 wl1271_error("Unable to set ap probe request template.");
1189
1190 out:
1191         return skb;
1192 }
1193
1194 int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1195 {
1196         int ret, extra = 0;
1197         u16 fc;
1198         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1199         struct sk_buff *skb;
1200         struct wl12xx_arp_rsp_template *tmpl;
1201         struct ieee80211_hdr_3addr *hdr;
1202         struct arphdr *arp_hdr;
1203
1204         skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) +
1205                             WL1271_EXTRA_SPACE_MAX);
1206         if (!skb) {
1207                 wl1271_error("failed to allocate buffer for arp rsp template");
1208                 return -ENOMEM;
1209         }
1210
1211         skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX);
1212
1213         tmpl = (struct wl12xx_arp_rsp_template *)skb_put(skb, sizeof(*tmpl));
1214         memset(tmpl, 0, sizeof(*tmpl));
1215
1216         /* llc layer */
1217         memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header));
1218         tmpl->llc_type = cpu_to_be16(ETH_P_ARP);
1219
1220         /* arp header */
1221         arp_hdr = &tmpl->arp_hdr;
1222         arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);
1223         arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);
1224         arp_hdr->ar_hln = ETH_ALEN;
1225         arp_hdr->ar_pln = 4;
1226         arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);
1227
1228         /* arp payload */
1229         memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN);
1230         tmpl->sender_ip = wlvif->ip_addr;
1231
1232         /* encryption space */
1233         switch (wlvif->encryption_type) {
1234         case KEY_TKIP:
1235                 if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
1236                         extra = WL1271_EXTRA_SPACE_TKIP;
1237                 break;
1238         case KEY_AES:
1239                 extra = WL1271_EXTRA_SPACE_AES;
1240                 break;
1241         case KEY_NONE:
1242         case KEY_WEP:
1243         case KEY_GEM:
1244                 extra = 0;
1245                 break;
1246         default:
1247                 wl1271_warning("Unknown encryption type: %d",
1248                                wlvif->encryption_type);
1249                 ret = -EINVAL;
1250                 goto out;
1251         }
1252
1253         if (extra) {
1254                 u8 *space = skb_push(skb, extra);
1255                 memset(space, 0, extra);
1256         }
1257
1258         /* QoS header - BE */
1259         if (wlvif->sta.qos)
1260                 memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16));
1261
1262         /* mac80211 header */
1263         hdr = (struct ieee80211_hdr_3addr *)skb_push(skb, sizeof(*hdr));
1264         memset(hdr, 0, sizeof(*hdr));
1265         fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS;
1266         if (wlvif->sta.qos)
1267                 fc |= IEEE80211_STYPE_QOS_DATA;
1268         else
1269                 fc |= IEEE80211_STYPE_DATA;
1270         if (wlvif->encryption_type != KEY_NONE)
1271                 fc |= IEEE80211_FCTL_PROTECTED;
1272
1273         hdr->frame_control = cpu_to_le16(fc);
1274         memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN);
1275         memcpy(hdr->addr2, vif->addr, ETH_ALEN);
1276         memset(hdr->addr3, 0xff, ETH_ALEN);
1277
1278         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP,
1279                                       skb->data, skb->len, 0,
1280                                       wlvif->basic_rate);
1281 out:
1282         dev_kfree_skb(skb);
1283         return ret;
1284 }
1285
1286 int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif)
1287 {
1288         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
1289         struct ieee80211_qos_hdr template;
1290
1291         memset(&template, 0, sizeof(template));
1292
1293         memcpy(template.addr1, vif->bss_conf.bssid, ETH_ALEN);
1294         memcpy(template.addr2, vif->addr, ETH_ALEN);
1295         memcpy(template.addr3, vif->bss_conf.bssid, ETH_ALEN);
1296
1297         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1298                                              IEEE80211_STYPE_QOS_NULLFUNC |
1299                                              IEEE80211_FCTL_TODS);
1300
1301         /* FIXME: not sure what priority to use here */
1302         template.qos_ctrl = cpu_to_le16(0);
1303
1304         return wl1271_cmd_template_set(wl, wlvif->role_id,
1305                                        CMD_TEMPL_QOS_NULL_DATA, &template,
1306                                        sizeof(template), 0,
1307                                        wlvif->basic_rate);
1308 }
1309
1310 int wl12xx_cmd_set_default_wep_key(struct wl1271 *wl, u8 id, u8 hlid)
1311 {
1312         struct wl1271_cmd_set_keys *cmd;
1313         int ret = 0;
1314
1315         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
1316
1317         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1318         if (!cmd) {
1319                 ret = -ENOMEM;
1320                 goto out;
1321         }
1322
1323         cmd->hlid = hlid;
1324         cmd->key_id = id;
1325         cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1326         cmd->key_action = cpu_to_le16(KEY_SET_ID);
1327         cmd->key_type = KEY_WEP;
1328
1329         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1330         if (ret < 0) {
1331                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
1332                 goto out;
1333         }
1334
1335 out:
1336         kfree(cmd);
1337
1338         return ret;
1339 }
1340
1341 int wl1271_cmd_set_sta_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1342                        u16 action, u8 id, u8 key_type,
1343                        u8 key_size, const u8 *key, const u8 *addr,
1344                        u32 tx_seq_32, u16 tx_seq_16)
1345 {
1346         struct wl1271_cmd_set_keys *cmd;
1347         int ret = 0;
1348
1349         /* hlid might have already been deleted */
1350         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
1351                 return 0;
1352
1353         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1354         if (!cmd) {
1355                 ret = -ENOMEM;
1356                 goto out;
1357         }
1358
1359         cmd->hlid = wlvif->sta.hlid;
1360
1361         if (key_type == KEY_WEP)
1362                 cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1363         else if (is_broadcast_ether_addr(addr))
1364                 cmd->lid_key_type = BROADCAST_LID_TYPE;
1365         else
1366                 cmd->lid_key_type = UNICAST_LID_TYPE;
1367
1368         cmd->key_action = cpu_to_le16(action);
1369         cmd->key_size = key_size;
1370         cmd->key_type = key_type;
1371
1372         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1373         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1374
1375         cmd->key_id = id;
1376
1377         if (key_type == KEY_TKIP) {
1378                 /*
1379                  * We get the key in the following form:
1380                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1381                  * but the target is expecting:
1382                  * TKIP - RX MIC - TX MIC
1383                  */
1384                 memcpy(cmd->key, key, 16);
1385                 memcpy(cmd->key + 16, key + 24, 8);
1386                 memcpy(cmd->key + 24, key + 16, 8);
1387
1388         } else {
1389                 memcpy(cmd->key, key, key_size);
1390         }
1391
1392         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1393
1394         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1395         if (ret < 0) {
1396                 wl1271_warning("could not set keys");
1397         goto out;
1398         }
1399
1400 out:
1401         kfree(cmd);
1402
1403         return ret;
1404 }
1405
1406 /*
1407  * TODO: merge with sta/ibss into 1 set_key function.
1408  * note there are slight diffs
1409  */
1410 int wl1271_cmd_set_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1411                           u16 action, u8 id, u8 key_type,
1412                           u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
1413                           u16 tx_seq_16)
1414 {
1415         struct wl1271_cmd_set_keys *cmd;
1416         int ret = 0;
1417         u8 lid_type;
1418
1419         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1420         if (!cmd)
1421                 return -ENOMEM;
1422
1423         if (hlid == wlvif->ap.bcast_hlid) {
1424                 if (key_type == KEY_WEP)
1425                         lid_type = WEP_DEFAULT_LID_TYPE;
1426                 else
1427                         lid_type = BROADCAST_LID_TYPE;
1428         } else {
1429                 lid_type = UNICAST_LID_TYPE;
1430         }
1431
1432         wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d"
1433                      " hlid: %d", (int)action, (int)id, (int)lid_type,
1434                      (int)key_type, (int)hlid);
1435
1436         cmd->lid_key_type = lid_type;
1437         cmd->hlid = hlid;
1438         cmd->key_action = cpu_to_le16(action);
1439         cmd->key_size = key_size;
1440         cmd->key_type = key_type;
1441         cmd->key_id = id;
1442         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1443         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1444
1445         if (key_type == KEY_TKIP) {
1446                 /*
1447                  * We get the key in the following form:
1448                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1449                  * but the target is expecting:
1450                  * TKIP - RX MIC - TX MIC
1451                  */
1452                 memcpy(cmd->key, key, 16);
1453                 memcpy(cmd->key + 16, key + 24, 8);
1454                 memcpy(cmd->key + 24, key + 16, 8);
1455         } else {
1456                 memcpy(cmd->key, key, key_size);
1457         }
1458
1459         wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd));
1460
1461         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1462         if (ret < 0) {
1463                 wl1271_warning("could not set ap keys");
1464                 goto out;
1465         }
1466
1467 out:
1468         kfree(cmd);
1469         return ret;
1470 }
1471
1472 int wl12xx_cmd_set_peer_state(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1473                               u8 hlid)
1474 {
1475         struct wl12xx_cmd_set_peer_state *cmd;
1476         int ret = 0;
1477
1478         wl1271_debug(DEBUG_CMD, "cmd set peer state (hlid=%d)", hlid);
1479
1480         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1481         if (!cmd) {
1482                 ret = -ENOMEM;
1483                 goto out;
1484         }
1485
1486         cmd->hlid = hlid;
1487         cmd->state = WL1271_CMD_STA_STATE_CONNECTED;
1488
1489         /* wmm param is valid only for station role */
1490         if (wlvif->bss_type == BSS_TYPE_STA_BSS)
1491                 cmd->wmm = wlvif->wmm_enabled;
1492
1493         ret = wl1271_cmd_send(wl, CMD_SET_PEER_STATE, cmd, sizeof(*cmd), 0);
1494         if (ret < 0) {
1495                 wl1271_error("failed to send set peer state command");
1496                 goto out_free;
1497         }
1498
1499 out_free:
1500         kfree(cmd);
1501
1502 out:
1503         return ret;
1504 }
1505
1506 int wl12xx_cmd_add_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1507                         struct ieee80211_sta *sta, u8 hlid)
1508 {
1509         struct wl12xx_cmd_add_peer *cmd;
1510         int i, ret;
1511         u32 sta_rates;
1512
1513         wl1271_debug(DEBUG_CMD, "cmd add peer %d", (int)hlid);
1514
1515         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1516         if (!cmd) {
1517                 ret = -ENOMEM;
1518                 goto out;
1519         }
1520
1521         memcpy(cmd->addr, sta->addr, ETH_ALEN);
1522         cmd->bss_index = WL1271_AP_BSS_INDEX;
1523         cmd->aid = sta->aid;
1524         cmd->hlid = hlid;
1525         cmd->sp_len = sta->max_sp;
1526         cmd->wmm = sta->wme ? 1 : 0;
1527         cmd->session_id = wl->session_ids[hlid];
1528
1529         for (i = 0; i < NUM_ACCESS_CATEGORIES_COPY; i++)
1530                 if (sta->wme && (sta->uapsd_queues & BIT(i)))
1531                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1532                                         WL1271_PSD_UPSD_TRIGGER;
1533                 else
1534                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1535                                         WL1271_PSD_LEGACY;
1536
1537
1538         sta_rates = sta->supp_rates[wlvif->band];
1539         if (sta->ht_cap.ht_supported)
1540                 sta_rates |=
1541                         (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET) |
1542                         (sta->ht_cap.mcs.rx_mask[1] << HW_MIMO_RATES_OFFSET);
1543
1544         cmd->supported_rates =
1545                 cpu_to_le32(wl1271_tx_enabled_rates_get(wl, sta_rates,
1546                                                         wlvif->band));
1547
1548         wl1271_debug(DEBUG_CMD, "new peer rates=0x%x queues=0x%x",
1549                      cmd->supported_rates, sta->uapsd_queues);
1550
1551         ret = wl1271_cmd_send(wl, CMD_ADD_PEER, cmd, sizeof(*cmd), 0);
1552         if (ret < 0) {
1553                 wl1271_error("failed to initiate cmd add peer");
1554                 goto out_free;
1555         }
1556
1557 out_free:
1558         kfree(cmd);
1559
1560 out:
1561         return ret;
1562 }
1563
1564 int wl12xx_cmd_remove_peer(struct wl1271 *wl, u8 hlid)
1565 {
1566         struct wl12xx_cmd_remove_peer *cmd;
1567         int ret;
1568         bool timeout = false;
1569
1570         wl1271_debug(DEBUG_CMD, "cmd remove peer %d", (int)hlid);
1571
1572         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1573         if (!cmd) {
1574                 ret = -ENOMEM;
1575                 goto out;
1576         }
1577
1578         cmd->hlid = hlid;
1579         /* We never send a deauth, mac80211 is in charge of this */
1580         cmd->reason_opcode = 0;
1581         cmd->send_deauth_flag = 0;
1582
1583         ret = wl1271_cmd_send(wl, CMD_REMOVE_PEER, cmd, sizeof(*cmd), 0);
1584         if (ret < 0) {
1585                 wl1271_error("failed to initiate cmd remove peer");
1586                 goto out_free;
1587         }
1588
1589         ret = wl->ops->wait_for_event(wl,
1590                                       WLCORE_EVENT_PEER_REMOVE_COMPLETE,
1591                                       &timeout);
1592
1593         /*
1594          * We are ok with a timeout here. The event is sometimes not sent
1595          * due to a firmware bug. In case of another error (like SDIO timeout)
1596          * queue a recovery.
1597          */
1598         if (ret)
1599                 wl12xx_queue_recovery_work(wl);
1600
1601 out_free:
1602         kfree(cmd);
1603
1604 out:
1605         return ret;
1606 }
1607
1608 static int wlcore_get_reg_conf_ch_idx(enum ieee80211_band band, u16 ch)
1609 {
1610         int idx = -1;
1611
1612         switch (band) {
1613         case IEEE80211_BAND_5GHZ:
1614                 if (ch >= 8 && ch <= 16)
1615                         idx = ((ch-8)/4 + 18);
1616                 else if (ch >= 34 && ch <= 64)
1617                         idx = ((ch-34)/2 + 3 + 18);
1618                 else if (ch >= 100 && ch <= 140)
1619                         idx = ((ch-100)/4 + 15 + 18);
1620                 else if (ch >= 149 && ch <= 165)
1621                         idx = ((ch-149)/4 + 26 + 18);
1622                 else
1623                         idx = -1;
1624                 break;
1625         case IEEE80211_BAND_2GHZ:
1626                 if (ch >= 1 && ch <= 14)
1627                         idx = ch - 1;
1628                 else
1629                         idx = -1;
1630                 break;
1631         default:
1632                 wl1271_error("get reg conf ch idx - unknown band: %d",
1633                              (int)band);
1634         }
1635
1636         return idx;
1637 }
1638
1639 void wlcore_set_pending_regdomain_ch(struct wl1271 *wl, u16 channel,
1640                                      enum ieee80211_band band)
1641 {
1642         int ch_bit_idx = 0;
1643
1644         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1645                 return;
1646
1647         ch_bit_idx = wlcore_get_reg_conf_ch_idx(band, channel);
1648
1649         if (ch_bit_idx > 0 && ch_bit_idx <= WL1271_MAX_CHANNELS)
1650                 set_bit(ch_bit_idx, (long *)wl->reg_ch_conf_pending);
1651 }
1652
1653 int wlcore_cmd_regdomain_config_locked(struct wl1271 *wl)
1654 {
1655         struct wl12xx_cmd_regdomain_dfs_config *cmd = NULL;
1656         int ret = 0, i, b, ch_bit_idx;
1657         struct ieee80211_channel *channel;
1658         u32 tmp_ch_bitmap[2];
1659         u16 ch;
1660         struct wiphy *wiphy = wl->hw->wiphy;
1661         struct ieee80211_supported_band *band;
1662         bool timeout = false;
1663
1664         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1665                 return 0;
1666
1667         wl1271_debug(DEBUG_CMD, "cmd reg domain config");
1668
1669         memset(tmp_ch_bitmap, 0, sizeof(tmp_ch_bitmap));
1670
1671         for (b = IEEE80211_BAND_2GHZ; b <= IEEE80211_BAND_5GHZ; b++) {
1672                 band = wiphy->bands[b];
1673                 for (i = 0; i < band->n_channels; i++) {
1674                         channel = &band->channels[i];
1675                         ch = channel->hw_value;
1676
1677                         if (channel->flags & (IEEE80211_CHAN_DISABLED |
1678                                               IEEE80211_CHAN_RADAR |
1679                                               IEEE80211_CHAN_PASSIVE_SCAN))
1680                                 continue;
1681
1682                         ch_bit_idx = wlcore_get_reg_conf_ch_idx(b, ch);
1683                         if (ch_bit_idx < 0)
1684                                 continue;
1685
1686                         set_bit(ch_bit_idx, (long *)tmp_ch_bitmap);
1687                 }
1688         }
1689
1690         tmp_ch_bitmap[0] |= wl->reg_ch_conf_pending[0];
1691         tmp_ch_bitmap[1] |= wl->reg_ch_conf_pending[1];
1692
1693         if (!memcmp(tmp_ch_bitmap, wl->reg_ch_conf_last, sizeof(tmp_ch_bitmap)))
1694                 goto out;
1695
1696         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1697         if (!cmd) {
1698                 ret = -ENOMEM;
1699                 goto out;
1700         }
1701
1702         cmd->ch_bit_map1 = cpu_to_le32(tmp_ch_bitmap[0]);
1703         cmd->ch_bit_map2 = cpu_to_le32(tmp_ch_bitmap[1]);
1704
1705         wl1271_debug(DEBUG_CMD,
1706                      "cmd reg domain bitmap1: 0x%08x, bitmap2: 0x%08x",
1707                      cmd->ch_bit_map1, cmd->ch_bit_map2);
1708
1709         ret = wl1271_cmd_send(wl, CMD_DFS_CHANNEL_CONFIG, cmd, sizeof(*cmd), 0);
1710         if (ret < 0) {
1711                 wl1271_error("failed to send reg domain dfs config");
1712                 goto out;
1713         }
1714
1715         ret = wl->ops->wait_for_event(wl,
1716                                       WLCORE_EVENT_DFS_CONFIG_COMPLETE,
1717                                       &timeout);
1718         if (ret < 0 || timeout) {
1719                 wl1271_error("reg domain conf %serror",
1720                              timeout ? "completion " : "");
1721                 ret = timeout ? -ETIMEDOUT : ret;
1722                 goto out;
1723         }
1724
1725         memcpy(wl->reg_ch_conf_last, tmp_ch_bitmap, sizeof(tmp_ch_bitmap));
1726         memset(wl->reg_ch_conf_pending, 0, sizeof(wl->reg_ch_conf_pending));
1727
1728 out:
1729         kfree(cmd);
1730         return ret;
1731 }
1732
1733 int wl12xx_cmd_config_fwlog(struct wl1271 *wl)
1734 {
1735         struct wl12xx_cmd_config_fwlog *cmd;
1736         int ret = 0;
1737
1738         wl1271_debug(DEBUG_CMD, "cmd config firmware logger");
1739
1740         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1741         if (!cmd) {
1742                 ret = -ENOMEM;
1743                 goto out;
1744         }
1745
1746         cmd->logger_mode = wl->conf.fwlog.mode;
1747         cmd->log_severity = wl->conf.fwlog.severity;
1748         cmd->timestamp = wl->conf.fwlog.timestamp;
1749         cmd->output = wl->conf.fwlog.output;
1750         cmd->threshold = wl->conf.fwlog.threshold;
1751
1752         ret = wl1271_cmd_send(wl, CMD_CONFIG_FWLOGGER, cmd, sizeof(*cmd), 0);
1753         if (ret < 0) {
1754                 wl1271_error("failed to send config firmware logger command");
1755                 goto out_free;
1756         }
1757
1758 out_free:
1759         kfree(cmd);
1760
1761 out:
1762         return ret;
1763 }
1764
1765 int wl12xx_cmd_start_fwlog(struct wl1271 *wl)
1766 {
1767         struct wl12xx_cmd_start_fwlog *cmd;
1768         int ret = 0;
1769
1770         wl1271_debug(DEBUG_CMD, "cmd start firmware logger");
1771
1772         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1773         if (!cmd) {
1774                 ret = -ENOMEM;
1775                 goto out;
1776         }
1777
1778         ret = wl1271_cmd_send(wl, CMD_START_FWLOGGER, cmd, sizeof(*cmd), 0);
1779         if (ret < 0) {
1780                 wl1271_error("failed to send start firmware logger command");
1781                 goto out_free;
1782         }
1783
1784 out_free:
1785         kfree(cmd);
1786
1787 out:
1788         return ret;
1789 }
1790
1791 int wl12xx_cmd_stop_fwlog(struct wl1271 *wl)
1792 {
1793         struct wl12xx_cmd_stop_fwlog *cmd;
1794         int ret = 0;
1795
1796         wl1271_debug(DEBUG_CMD, "cmd stop firmware logger");
1797
1798         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1799         if (!cmd) {
1800                 ret = -ENOMEM;
1801                 goto out;
1802         }
1803
1804         ret = wl1271_cmd_send(wl, CMD_STOP_FWLOGGER, cmd, sizeof(*cmd), 0);
1805         if (ret < 0) {
1806                 wl1271_error("failed to send stop firmware logger command");
1807                 goto out_free;
1808         }
1809
1810 out_free:
1811         kfree(cmd);
1812
1813 out:
1814         return ret;
1815 }
1816
1817 static int wl12xx_cmd_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1818                           u8 role_id, enum ieee80211_band band, u8 channel)
1819 {
1820         struct wl12xx_cmd_roc *cmd;
1821         int ret = 0;
1822
1823         wl1271_debug(DEBUG_CMD, "cmd roc %d (%d)", channel, role_id);
1824
1825         if (WARN_ON(role_id == WL12XX_INVALID_ROLE_ID))
1826                 return -EINVAL;
1827
1828         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1829         if (!cmd) {
1830                 ret = -ENOMEM;
1831                 goto out;
1832         }
1833
1834         cmd->role_id = role_id;
1835         cmd->channel = channel;
1836         switch (band) {
1837         case IEEE80211_BAND_2GHZ:
1838                 cmd->band = WLCORE_BAND_2_4GHZ;
1839                 break;
1840         case IEEE80211_BAND_5GHZ:
1841                 cmd->band = WLCORE_BAND_5GHZ;
1842                 break;
1843         default:
1844                 wl1271_error("roc - unknown band: %d", (int)wlvif->band);
1845                 ret = -EINVAL;
1846                 goto out_free;
1847         }
1848
1849
1850         ret = wl1271_cmd_send(wl, CMD_REMAIN_ON_CHANNEL, cmd, sizeof(*cmd), 0);
1851         if (ret < 0) {
1852                 wl1271_error("failed to send ROC command");
1853                 goto out_free;
1854         }
1855
1856 out_free:
1857         kfree(cmd);
1858
1859 out:
1860         return ret;
1861 }
1862
1863 static int wl12xx_cmd_croc(struct wl1271 *wl, u8 role_id)
1864 {
1865         struct wl12xx_cmd_croc *cmd;
1866         int ret = 0;
1867
1868         wl1271_debug(DEBUG_CMD, "cmd croc (%d)", role_id);
1869
1870         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1871         if (!cmd) {
1872                 ret = -ENOMEM;
1873                 goto out;
1874         }
1875         cmd->role_id = role_id;
1876
1877         ret = wl1271_cmd_send(wl, CMD_CANCEL_REMAIN_ON_CHANNEL, cmd,
1878                               sizeof(*cmd), 0);
1879         if (ret < 0) {
1880                 wl1271_error("failed to send ROC command");
1881                 goto out_free;
1882         }
1883
1884 out_free:
1885         kfree(cmd);
1886
1887 out:
1888         return ret;
1889 }
1890
1891 int wl12xx_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 role_id,
1892                enum ieee80211_band band, u8 channel)
1893 {
1894         int ret = 0;
1895
1896         if (WARN_ON(test_bit(role_id, wl->roc_map)))
1897                 return 0;
1898
1899         ret = wl12xx_cmd_roc(wl, wlvif, role_id, band, channel);
1900         if (ret < 0)
1901                 goto out;
1902
1903         __set_bit(role_id, wl->roc_map);
1904 out:
1905         return ret;
1906 }
1907
1908 int wl12xx_croc(struct wl1271 *wl, u8 role_id)
1909 {
1910         int ret = 0;
1911
1912         if (WARN_ON(!test_bit(role_id, wl->roc_map)))
1913                 return 0;
1914
1915         ret = wl12xx_cmd_croc(wl, role_id);
1916         if (ret < 0)
1917                 goto out;
1918
1919         __clear_bit(role_id, wl->roc_map);
1920
1921         /*
1922          * Rearm the tx watchdog when removing the last ROC. This prevents
1923          * recoveries due to just finished ROCs - when Tx hasn't yet had
1924          * a chance to get out.
1925          */
1926         if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES)
1927                 wl12xx_rearm_tx_watchdog_locked(wl);
1928 out:
1929         return ret;
1930 }
1931
1932 int wl12xx_cmd_stop_channel_switch(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1933 {
1934         struct wl12xx_cmd_stop_channel_switch *cmd;
1935         int ret;
1936
1937         wl1271_debug(DEBUG_ACX, "cmd stop channel switch");
1938
1939         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1940         if (!cmd) {
1941                 ret = -ENOMEM;
1942                 goto out;
1943         }
1944
1945         cmd->role_id = wlvif->role_id;
1946
1947         ret = wl1271_cmd_send(wl, CMD_STOP_CHANNEL_SWICTH, cmd, sizeof(*cmd), 0);
1948         if (ret < 0) {
1949                 wl1271_error("failed to stop channel switch command");
1950                 goto out_free;
1951         }
1952
1953 out_free:
1954         kfree(cmd);
1955
1956 out:
1957         return ret;
1958 }
1959
1960 /* start dev role and roc on its channel */
1961 int wl12xx_start_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1962                      enum ieee80211_band band, int channel)
1963 {
1964         int ret;
1965
1966         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
1967                       wlvif->bss_type == BSS_TYPE_IBSS)))
1968                 return -EINVAL;
1969
1970         ret = wl12xx_cmd_role_enable(wl,
1971                                      wl12xx_wlvif_to_vif(wlvif)->addr,
1972                                      WL1271_ROLE_DEVICE,
1973                                      &wlvif->dev_role_id);
1974         if (ret < 0)
1975                 goto out;
1976
1977         ret = wl12xx_cmd_role_start_dev(wl, wlvif, band, channel);
1978         if (ret < 0)
1979                 goto out_disable;
1980
1981         ret = wl12xx_roc(wl, wlvif, wlvif->dev_role_id, band, channel);
1982         if (ret < 0)
1983                 goto out_stop;
1984
1985         return 0;
1986
1987 out_stop:
1988         wl12xx_cmd_role_stop_dev(wl, wlvif);
1989 out_disable:
1990         wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
1991 out:
1992         return ret;
1993 }
1994
1995 /* croc dev hlid, and stop the role */
1996 int wl12xx_stop_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1997 {
1998         int ret;
1999
2000         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2001                       wlvif->bss_type == BSS_TYPE_IBSS)))
2002                 return -EINVAL;
2003
2004         /* flush all pending packets */
2005         ret = wlcore_tx_work_locked(wl);
2006         if (ret < 0)
2007                 goto out;
2008
2009         if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
2010                 ret = wl12xx_croc(wl, wlvif->dev_role_id);
2011                 if (ret < 0)
2012                         goto out;
2013         }
2014
2015         ret = wl12xx_cmd_role_stop_dev(wl, wlvif);
2016         if (ret < 0)
2017                 goto out;
2018
2019         ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2020         if (ret < 0)
2021                 goto out;
2022
2023 out:
2024         return ret;
2025 }