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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This file is part of wl1271
   4  *
   5  * Copyright (C) 2009-2010 Nokia Corporation
   6  *
   7  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/pm_runtime.h>
  13 #include <linux/spi/spi.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/ieee80211.h>
  16 #include <linux/slab.h>
  17
  18 #include "wlcore.h"
  19 #include "debug.h"
  20 #include "io.h"
  21 #include "acx.h"
  22 #include "wl12xx_80211.h"
  23 #include "cmd.h"
  24 #include "event.h"
  25 #include "tx.h"
  26 #include "hw_ops.h"
  27
  28 #define WL1271_CMD_FAST_POLL_COUNT       50
  29 #define WL1271_WAIT_EVENT_FAST_POLL_COUNT 20
  30
  31 /*
  32  * send command to firmware
  33  *
  34  * @wl: wl struct
  35  * @id: command id
  36  * @buf: buffer containing the command, must work with dma
  37  * @len: length of the buffer
  38  * return the cmd status code on success.
  39  */
  40 static int __wlcore_cmd_send(struct wl1271 *wl, u16 id, void *buf,
  41                              size_t len, size_t res_len)
  42 {
  43         struct wl1271_cmd_header *cmd;
  44         unsigned long timeout;
  45         u32 intr;
  46         int ret;
  47         u16 status;
  48         u16 poll_count = 0;
  49
  50         if (unlikely(wl->state == WLCORE_STATE_RESTARTING &&
  51                      id != CMD_STOP_FWLOGGER))
  52                 return -EIO;
  53
  54         if (WARN_ON_ONCE(len < sizeof(*cmd)))
  55                 return -EIO;
  56
  57         cmd = buf;
  58         cmd->id = cpu_to_le16(id);
  59         cmd->status = 0;
  60
  61         WARN_ON(len % 4 != 0);
  62         WARN_ON(test_bit(WL1271_FLAG_IN_ELP, &wl->flags));
  63
  64         ret = wlcore_write(wl, wl->cmd_box_addr, buf, len, false);
  65         if (ret < 0)
  66                 return ret;
  67
  68         /*
  69          * TODO: we just need this because one bit is in a different
  70          * place.  Is there any better way?
  71          */
  72         ret = wl->ops->trigger_cmd(wl, wl->cmd_box_addr, buf, len);
  73         if (ret < 0)
  74                 return ret;
  75
  76         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  77
  78         ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
  79         if (ret < 0)
  80                 return ret;
  81
  82         while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
  83                 if (time_after(jiffies, timeout)) {
  84                         wl1271_error("command complete timeout");
  85                         return -ETIMEDOUT;
  86                 }
  87
  88                 poll_count++;
  89                 if (poll_count < WL1271_CMD_FAST_POLL_COUNT)
  90                         udelay(10);
  91                 else
  92                         msleep(1);
  93
  94                 ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
  95                 if (ret < 0)
  96                         return ret;
  97         }
  98
  99         /* read back the status code of the command */
 100         if (res_len == 0)
 101                 res_len = sizeof(struct wl1271_cmd_header);
 102
 103         ret = wlcore_read(wl, wl->cmd_box_addr, cmd, res_len, false);
 104         if (ret < 0)
 105                 return ret;
 106
 107         status = le16_to_cpu(cmd->status);
 108
 109         ret = wlcore_write_reg(wl, REG_INTERRUPT_ACK,
 110                                WL1271_ACX_INTR_CMD_COMPLETE);
 111         if (ret < 0)
 112                 return ret;
 113
 114         return status;
 115 }
 116
 117 /*
 118  * send command to fw and return cmd status on success
 119  * valid_rets contains a bitmap of allowed error codes
 120  */
 121 static int wlcore_cmd_send_failsafe(struct wl1271 *wl, u16 id, void *buf,
 122                                     size_t len, size_t res_len,
 123                                     unsigned long valid_rets)
 124 {
 125         int ret = __wlcore_cmd_send(wl, id, buf, len, res_len);
 126
 127         if (ret < 0)
 128                 goto fail;
 129
 130         /* success is always a valid status */
 131         valid_rets |= BIT(CMD_STATUS_SUCCESS);
 132
 133         if (ret >= MAX_COMMAND_STATUS ||
 134             !test_bit(ret, &valid_rets)) {
 135                 wl1271_error("command execute failure %d", ret);
 136                 ret = -EIO;
 137                 goto fail;
 138         }
 139         return ret;
 140 fail:
 141         wl12xx_queue_recovery_work(wl);
 142         return ret;
 143 }
 144
 145 /*
 146  * wrapper for wlcore_cmd_send that accept only CMD_STATUS_SUCCESS
 147  * return 0 on success.
 148  */
 149 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
 150                     size_t res_len)
 151 {
 152         int ret = wlcore_cmd_send_failsafe(wl, id, buf, len, res_len, 0);
 153
 154         if (ret < 0)
 155                 return ret;
 156         return 0;
 157 }
 158 EXPORT_SYMBOL_GPL(wl1271_cmd_send);
 159
 160 /*
 161  * Poll the mailbox event field until any of the bits in the mask is set or a
 162  * timeout occurs (WL1271_EVENT_TIMEOUT in msecs)
 163  */
 164 int wlcore_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 165                                          u32 mask, bool *timeout)
 166 {
 167         u32 *events_vector;
 168         u32 event;
 169         unsigned long timeout_time;
 170         u16 poll_count = 0;
 171         int ret = 0;
 172
 173         *timeout = false;
 174
 175         events_vector = kmalloc(sizeof(*events_vector), GFP_KERNEL | GFP_DMA);
 176         if (!events_vector)
 177                 return -ENOMEM;
 178
 179         timeout_time = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
 180
 181         ret = pm_runtime_get_sync(wl->dev);
 182         if (ret < 0) {
 183                 pm_runtime_put_noidle(wl->dev);
 184                 goto free_vector;
 185         }
 186
 187         do {
 188                 if (time_after(jiffies, timeout_time)) {
 189                         wl1271_debug(DEBUG_CMD, "timeout waiting for event %d",
 190                                      (int)mask);
 191                         *timeout = true;
 192                         goto out;
 193                 }
 194
 195                 poll_count++;
 196                 if (poll_count < WL1271_WAIT_EVENT_FAST_POLL_COUNT)
 197                         usleep_range(50, 51);
 198                 else
 199                         usleep_range(1000, 5000);
 200
 201                 /* read from both event fields */
 202                 ret = wlcore_read(wl, wl->mbox_ptr[0], events_vector,
 203                                   sizeof(*events_vector), false);
 204                 if (ret < 0)
 205                         goto out;
 206
 207                 event = *events_vector & mask;
 208
 209                 ret = wlcore_read(wl, wl->mbox_ptr[1], events_vector,
 210                                   sizeof(*events_vector), false);
 211                 if (ret < 0)
 212                         goto out;
 213
 214                 event |= *events_vector & mask;
 215         } while (!event);
 216
 217 out:
 218         pm_runtime_mark_last_busy(wl->dev);
 219         pm_runtime_put_autosuspend(wl->dev);
 220 free_vector:
 221         kfree(events_vector);
 222         return ret;
 223 }
 224 EXPORT_SYMBOL_GPL(wlcore_cmd_wait_for_event_or_timeout);
 225
 226 int wl12xx_cmd_role_enable(struct wl1271 *wl, u8 *addr, u8 role_type,
 227                            u8 *role_id)
 228 {
 229         struct wl12xx_cmd_role_enable *cmd;
 230         int ret;
 231
 232         wl1271_debug(DEBUG_CMD, "cmd role enable");
 233
 234         if (WARN_ON(*role_id != WL12XX_INVALID_ROLE_ID))
 235                 return -EBUSY;
 236
 237         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 238         if (!cmd) {
 239                 ret = -ENOMEM;
 240                 goto out;
 241         }
 242
 243         /* get role id */
 244         cmd->role_id = find_first_zero_bit(wl->roles_map, WL12XX_MAX_ROLES);
 245         if (cmd->role_id >= WL12XX_MAX_ROLES) {
 246                 ret = -EBUSY;
 247                 goto out_free;
 248         }
 249
 250         memcpy(cmd->mac_address, addr, ETH_ALEN);
 251         cmd->role_type = role_type;
 252
 253         ret = wl1271_cmd_send(wl, CMD_ROLE_ENABLE, cmd, sizeof(*cmd), 0);
 254         if (ret < 0) {
 255                 wl1271_error("failed to initiate cmd role enable");
 256                 goto out_free;
 257         }
 258
 259         __set_bit(cmd->role_id, wl->roles_map);
 260         *role_id = cmd->role_id;
 261
 262 out_free:
 263         kfree(cmd);
 264
 265 out:
 266         return ret;
 267 }
 268
 269 int wl12xx_cmd_role_disable(struct wl1271 *wl, u8 *role_id)
 270 {
 271         struct wl12xx_cmd_role_disable *cmd;
 272         int ret;
 273
 274         wl1271_debug(DEBUG_CMD, "cmd role disable");
 275
 276         if (WARN_ON(*role_id == WL12XX_INVALID_ROLE_ID))
 277                 return -ENOENT;
 278
 279         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 280         if (!cmd) {
 281                 ret = -ENOMEM;
 282                 goto out;
 283         }
 284         cmd->role_id = *role_id;
 285
 286         ret = wl1271_cmd_send(wl, CMD_ROLE_DISABLE, cmd, sizeof(*cmd), 0);
 287         if (ret < 0) {
 288                 wl1271_error("failed to initiate cmd role disable");
 289                 goto out_free;
 290         }
 291
 292         __clear_bit(*role_id, wl->roles_map);
 293         *role_id = WL12XX_INVALID_ROLE_ID;
 294
 295 out_free:
 296         kfree(cmd);
 297
 298 out:
 299         return ret;
 300 }
 301
 302 static int wlcore_get_new_session_id(struct wl1271 *wl, u8 hlid)
 303 {
 304         if (wl->session_ids[hlid] >= SESSION_COUNTER_MAX)
 305                 wl->session_ids[hlid] = 0;
 306
 307         wl->session_ids[hlid]++;
 308
 309         return wl->session_ids[hlid];
 310 }
 311
 312 int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 313 {
 314         unsigned long flags;
 315         u8 link = find_first_zero_bit(wl->links_map, wl->num_links);
 316         if (link >= wl->num_links)
 317                 return -EBUSY;
 318
 319         wl->session_ids[link] = wlcore_get_new_session_id(wl, link);
 320
 321         /* these bits are used by op_tx */
 322         spin_lock_irqsave(&wl->wl_lock, flags);
 323         __set_bit(link, wl->links_map);
 324         __set_bit(link, wlvif->links_map);
 325         spin_unlock_irqrestore(&wl->wl_lock, flags);
 326
 327         /*
 328          * take the last "freed packets" value from the current FW status.
 329          * on recovery, we might not have fw_status yet, and
 330          * tx_lnk_free_pkts will be NULL. check for it.
 331          */
 332         if (wl->fw_status->counters.tx_lnk_free_pkts)
 333                 wl->links[link].prev_freed_pkts =
 334                         wl->fw_status->counters.tx_lnk_free_pkts[link];
 335         wl->links[link].wlvif = wlvif;
 336
 337         /*
 338          * Take saved value for total freed packets from wlvif, in case this is
 339          * recovery/resume
 340          */
 341         if (wlvif->bss_type != BSS_TYPE_AP_BSS)
 342                 wl->links[link].total_freed_pkts = wlvif->total_freed_pkts;
 343
 344         *hlid = link;
 345
 346         wl->active_link_count++;
 347         return 0;
 348 }
 349
 350 void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 351 {
 352         unsigned long flags;
 353
 354         if (*hlid == WL12XX_INVALID_LINK_ID)
 355                 return;
 356
 357         /* these bits are used by op_tx */
 358         spin_lock_irqsave(&wl->wl_lock, flags);
 359         __clear_bit(*hlid, wl->links_map);
 360         __clear_bit(*hlid, wlvif->links_map);
 361         spin_unlock_irqrestore(&wl->wl_lock, flags);
 362
 363         wl->links[*hlid].allocated_pkts = 0;
 364         wl->links[*hlid].prev_freed_pkts = 0;
 365         wl->links[*hlid].ba_bitmap = 0;
 366         eth_zero_addr(wl->links[*hlid].addr);
 367
 368         /*
 369          * At this point op_tx() will not add more packets to the queues. We
 370          * can purge them.
 371          */
 372         wl1271_tx_reset_link_queues(wl, *hlid);
 373         wl->links[*hlid].wlvif = NULL;
 374
 375         if (wlvif->bss_type == BSS_TYPE_AP_BSS &&
 376             *hlid == wlvif->ap.bcast_hlid) {
 377                 u32 sqn_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING;
 378                 /*
 379                  * save the total freed packets in the wlvif, in case this is
 380                  * recovery or suspend
 381                  */
 382                 wlvif->total_freed_pkts = wl->links[*hlid].total_freed_pkts;
 383
 384                 /*
 385                  * increment the initial seq number on recovery to account for
 386                  * transmitted packets that we haven't yet got in the FW status
 387                  */
 388                 if (wlvif->encryption_type == KEY_GEM)
 389                         sqn_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING_GEM;
 390
 391                 if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
 392                         wlvif->total_freed_pkts += sqn_padding;
 393         }
 394
 395         wl->links[*hlid].total_freed_pkts = 0;
 396
 397         *hlid = WL12XX_INVALID_LINK_ID;
 398         wl->active_link_count--;
 399         WARN_ON_ONCE(wl->active_link_count < 0);
 400 }
 401
 402 u8 wlcore_get_native_channel_type(u8 nl_channel_type)
 403 {
 404         switch (nl_channel_type) {
 405         case NL80211_CHAN_NO_HT:
 406                 return WLCORE_CHAN_NO_HT;
 407         case NL80211_CHAN_HT20:
 408                 return WLCORE_CHAN_HT20;
 409         case NL80211_CHAN_HT40MINUS:
 410                 return WLCORE_CHAN_HT40MINUS;
 411         case NL80211_CHAN_HT40PLUS:
 412                 return WLCORE_CHAN_HT40PLUS;
 413         default:
 414                 WARN_ON(1);
 415                 return WLCORE_CHAN_NO_HT;
 416         }
 417 }
 418 EXPORT_SYMBOL_GPL(wlcore_get_native_channel_type);
 419
 420 static int wl12xx_cmd_role_start_dev(struct wl1271 *wl,
 421                                      struct wl12xx_vif *wlvif,
 422                                      enum nl80211_band band,
 423                                      int channel)
 424 {
 425         struct wl12xx_cmd_role_start *cmd;
 426         int ret;
 427
 428         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 429         if (!cmd) {
 430                 ret = -ENOMEM;
 431                 goto out;
 432         }
 433
 434         wl1271_debug(DEBUG_CMD, "cmd role start dev %d", wlvif->dev_role_id);
 435
 436         cmd->role_id = wlvif->dev_role_id;
 437         if (band == NL80211_BAND_5GHZ)
 438                 cmd->band = WLCORE_BAND_5GHZ;
 439         cmd->channel = channel;
 440
 441         if (wlvif->dev_hlid == WL12XX_INVALID_LINK_ID) {
 442                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->dev_hlid);
 443                 if (ret)
 444                         goto out_free;
 445         }
 446         cmd->device.hlid = wlvif->dev_hlid;
 447         cmd->device.session = wl->session_ids[wlvif->dev_hlid];
 448
 449         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d",
 450                      cmd->role_id, cmd->device.hlid, cmd->device.session);
 451
 452         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 453         if (ret < 0) {
 454                 wl1271_error("failed to initiate cmd role enable");
 455                 goto err_hlid;
 456         }
 457
 458         goto out_free;
 459
 460 err_hlid:
 461         /* clear links on error */
 462         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 463
 464 out_free:
 465         kfree(cmd);
 466
 467 out:
 468         return ret;
 469 }
 470
 471 static int wl12xx_cmd_role_stop_dev(struct wl1271 *wl,
 472                                     struct wl12xx_vif *wlvif)
 473 {
 474         struct wl12xx_cmd_role_stop *cmd;
 475         int ret;
 476
 477         if (WARN_ON(wlvif->dev_hlid == WL12XX_INVALID_LINK_ID))
 478                 return -EINVAL;
 479
 480         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 481         if (!cmd) {
 482                 ret = -ENOMEM;
 483                 goto out;
 484         }
 485
 486         wl1271_debug(DEBUG_CMD, "cmd role stop dev");
 487
 488         cmd->role_id = wlvif->dev_role_id;
 489         cmd->disc_type = DISCONNECT_IMMEDIATE;
 490         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 491
 492         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 493         if (ret < 0) {
 494                 wl1271_error("failed to initiate cmd role stop");
 495                 goto out_free;
 496         }
 497
 498         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 499
 500 out_free:
 501         kfree(cmd);
 502
 503 out:
 504         return ret;
 505 }
 506
 507 int wl12xx_cmd_role_start_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 508 {
 509         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 510         struct wl12xx_cmd_role_start *cmd;
 511         u32 supported_rates;
 512         int ret;
 513
 514         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 515         if (!cmd) {
 516                 ret = -ENOMEM;
 517                 goto out;
 518         }
 519
 520         wl1271_debug(DEBUG_CMD, "cmd role start sta %d", wlvif->role_id);
 521
 522         cmd->role_id = wlvif->role_id;
 523         if (wlvif->band == NL80211_BAND_5GHZ)
 524                 cmd->band = WLCORE_BAND_5GHZ;
 525         cmd->channel = wlvif->channel;
 526         cmd->sta.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 527         cmd->sta.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 528         cmd->sta.ssid_type = WL12XX_SSID_TYPE_ANY;
 529         cmd->sta.ssid_len = wlvif->ssid_len;
 530         memcpy(cmd->sta.ssid, wlvif->ssid, wlvif->ssid_len);
 531         memcpy(cmd->sta.bssid, vif->bss_conf.bssid, ETH_ALEN);
 532
 533         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
 534                           wlcore_hw_sta_get_ap_rate_mask(wl, wlvif);
 535         if (wlvif->p2p)
 536                 supported_rates &= ~CONF_TX_CCK_RATES;
 537
 538         cmd->sta.local_rates = cpu_to_le32(supported_rates);
 539
 540         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 541
 542         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 543                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 544                 if (ret)
 545                         goto out_free;
 546         }
 547         cmd->sta.hlid = wlvif->sta.hlid;
 548         cmd->sta.session = wl->session_ids[wlvif->sta.hlid];
 549         /*
 550          * We don't have the correct remote rates in this stage.  The
 551          * rates will be reconfigured later, after association, if the
 552          * firmware supports ACX_PEER_CAP.  Otherwise, there's nothing
 553          * we can do, so use all supported_rates here.
 554          */
 555         cmd->sta.remote_rates = cpu_to_le32(supported_rates);
 556
 557         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 558                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 559                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 560                      wlvif->basic_rate_set, wlvif->rate_set);
 561
 562         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 563         if (ret < 0) {
 564                 wl1271_error("failed to initiate cmd role start sta");
 565                 goto err_hlid;
 566         }
 567
 568         wlvif->sta.role_chan_type = wlvif->channel_type;
 569         goto out_free;
 570
 571 err_hlid:
 572         /* clear links on error. */
 573         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 574
 575 out_free:
 576         kfree(cmd);
 577
 578 out:
 579         return ret;
 580 }
 581
 582 /* use this function to stop ibss as well */
 583 int wl12xx_cmd_role_stop_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 584 {
 585         struct wl12xx_cmd_role_stop *cmd;
 586         int ret;
 587
 588         if (WARN_ON(wlvif->sta.hlid == WL12XX_INVALID_LINK_ID))
 589                 return -EINVAL;
 590
 591         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 592         if (!cmd) {
 593                 ret = -ENOMEM;
 594                 goto out;
 595         }
 596
 597         wl1271_debug(DEBUG_CMD, "cmd role stop sta %d", wlvif->role_id);
 598
 599         cmd->role_id = wlvif->role_id;
 600         cmd->disc_type = DISCONNECT_IMMEDIATE;
 601         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 602
 603         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 604         if (ret < 0) {
 605                 wl1271_error("failed to initiate cmd role stop sta");
 606                 goto out_free;
 607         }
 608
 609         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 610
 611 out_free:
 612         kfree(cmd);
 613
 614 out:
 615         return ret;
 616 }
 617
 618 int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 619 {
 620         struct wl12xx_cmd_role_start *cmd;
 621         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 622         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 623         u32 supported_rates;
 624         int ret;
 625
 626         wl1271_debug(DEBUG_CMD, "cmd role start ap %d", wlvif->role_id);
 627
 628         /* If MESH --> ssid_len is always 0 */
 629         if (!ieee80211_vif_is_mesh(vif)) {
 630                 /* trying to use hidden SSID with an old hostapd version */
 631                 if (wlvif->ssid_len == 0 && !bss_conf->hidden_ssid) {
 632                         wl1271_error("got a null SSID from beacon/bss");
 633                         ret = -EINVAL;
 634                         goto out;
 635                 }
 636         }
 637
 638         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 639         if (!cmd) {
 640                 ret = -ENOMEM;
 641                 goto out;
 642         }
 643
 644         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.global_hlid);
 645         if (ret < 0)
 646                 goto out_free;
 647
 648         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 649         if (ret < 0)
 650                 goto out_free_global;
 651
 652         /* use the previous security seq, if this is a recovery/resume */
 653         wl->links[wlvif->ap.bcast_hlid].total_freed_pkts =
 654                                                 wlvif->total_freed_pkts;
 655
 656         cmd->role_id = wlvif->role_id;
 657         cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 658         cmd->ap.bss_index = WL1271_AP_BSS_INDEX;
 659         cmd->ap.global_hlid = wlvif->ap.global_hlid;
 660         cmd->ap.broadcast_hlid = wlvif->ap.bcast_hlid;
 661         cmd->ap.global_session_id = wl->session_ids[wlvif->ap.global_hlid];
 662         cmd->ap.bcast_session_id = wl->session_ids[wlvif->ap.bcast_hlid];
 663         cmd->ap.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 664         cmd->ap.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 665         cmd->ap.dtim_interval = bss_conf->dtim_period;
 666         cmd->ap.beacon_expiry = WL1271_AP_DEF_BEACON_EXP;
 667         /* FIXME: Change when adding DFS */
 668         cmd->ap.reset_tsf = 1;  /* By default reset AP TSF */
 669         cmd->ap.wmm = wlvif->wmm_enabled;
 670         cmd->channel = wlvif->channel;
 671         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 672
 673         if (!bss_conf->hidden_ssid) {
 674                 /* take the SSID from the beacon for backward compatibility */
 675                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_PUBLIC;
 676                 cmd->ap.ssid_len = wlvif->ssid_len;
 677                 memcpy(cmd->ap.ssid, wlvif->ssid, wlvif->ssid_len);
 678         } else {
 679                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_HIDDEN;
 680                 cmd->ap.ssid_len = bss_conf->ssid_len;
 681                 memcpy(cmd->ap.ssid, bss_conf->ssid, bss_conf->ssid_len);
 682         }
 683
 684         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
 685                 wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif);
 686         if (wlvif->p2p)
 687                 supported_rates &= ~CONF_TX_CCK_RATES;
 688
 689         wl1271_debug(DEBUG_CMD, "cmd role start ap with supported_rates 0x%08x",
 690                      supported_rates);
 691
 692         cmd->ap.local_rates = cpu_to_le32(supported_rates);
 693
 694         switch (wlvif->band) {
 695         case NL80211_BAND_2GHZ:
 696                 cmd->band = WLCORE_BAND_2_4GHZ;
 697                 break;
 698         case NL80211_BAND_5GHZ:
 699                 cmd->band = WLCORE_BAND_5GHZ;
 700                 break;
 701         default:
 702                 wl1271_warning("ap start - unknown band: %d", (int)wlvif->band);
 703                 cmd->band = WLCORE_BAND_2_4GHZ;
 704                 break;
 705         }
 706
 707         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 708         if (ret < 0) {
 709                 wl1271_error("failed to initiate cmd role start ap");
 710                 goto out_free_bcast;
 711         }
 712
 713         goto out_free;
 714
 715 out_free_bcast:
 716         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 717
 718 out_free_global:
 719         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 720
 721 out_free:
 722         kfree(cmd);
 723
 724 out:
 725         return ret;
 726 }
 727
 728 int wl12xx_cmd_role_stop_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 729 {
 730         struct wl12xx_cmd_role_stop *cmd;
 731         int ret;
 732
 733         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 734         if (!cmd) {
 735                 ret = -ENOMEM;
 736                 goto out;
 737         }
 738
 739         wl1271_debug(DEBUG_CMD, "cmd role stop ap %d", wlvif->role_id);
 740
 741         cmd->role_id = wlvif->role_id;
 742
 743         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 744         if (ret < 0) {
 745                 wl1271_error("failed to initiate cmd role stop ap");
 746                 goto out_free;
 747         }
 748
 749         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 750         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 751
 752 out_free:
 753         kfree(cmd);
 754
 755 out:
 756         return ret;
 757 }
 758
 759 int wl12xx_cmd_role_start_ibss(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 760 {
 761         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 762         struct wl12xx_cmd_role_start *cmd;
 763         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 764         int ret;
 765
 766         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 767         if (!cmd) {
 768                 ret = -ENOMEM;
 769                 goto out;
 770         }
 771
 772         wl1271_debug(DEBUG_CMD, "cmd role start ibss %d", wlvif->role_id);
 773
 774         cmd->role_id = wlvif->role_id;
 775         if (wlvif->band == NL80211_BAND_5GHZ)
 776                 cmd->band = WLCORE_BAND_5GHZ;
 777         cmd->channel = wlvif->channel;
 778         cmd->ibss.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 779         cmd->ibss.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 780         cmd->ibss.dtim_interval = bss_conf->dtim_period;
 781         cmd->ibss.ssid_type = WL12XX_SSID_TYPE_ANY;
 782         cmd->ibss.ssid_len = wlvif->ssid_len;
 783         memcpy(cmd->ibss.ssid, wlvif->ssid, wlvif->ssid_len);
 784         memcpy(cmd->ibss.bssid, vif->bss_conf.bssid, ETH_ALEN);
 785         cmd->sta.local_rates = cpu_to_le32(wlvif->rate_set);
 786
 787         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 788                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 789                 if (ret)
 790                         goto out_free;
 791         }
 792         cmd->ibss.hlid = wlvif->sta.hlid;
 793         cmd->ibss.remote_rates = cpu_to_le32(wlvif->rate_set);
 794
 795         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 796                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 797                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 798                      wlvif->basic_rate_set, wlvif->rate_set);
 799
 800         wl1271_debug(DEBUG_CMD, "vif->bss_conf.bssid = %pM",
 801                      vif->bss_conf.bssid);
 802
 803         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 804         if (ret < 0) {
 805                 wl1271_error("failed to initiate cmd role enable");
 806                 goto err_hlid;
 807         }
 808
 809         goto out_free;
 810
 811 err_hlid:
 812         /* clear links on error. */
 813         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 814
 815 out_free:
 816         kfree(cmd);
 817
 818 out:
 819         return ret;
 820 }
 821
 822
 823 /**
 824  * send test command to firmware
 825  *
 826  * @wl: wl struct
 827  * @buf: buffer containing the command, with all headers, must work with dma
 828  * @len: length of the buffer
 829  * @answer: is answer needed
 830  */
 831 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 832 {
 833         int ret;
 834         size_t res_len = 0;
 835
 836         wl1271_debug(DEBUG_CMD, "cmd test");
 837
 838         if (answer)
 839                 res_len = buf_len;
 840
 841         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 842
 843         if (ret < 0) {
 844                 wl1271_warning("TEST command failed");
 845                 return ret;
 846         }
 847
 848         return ret;
 849 }
 850 EXPORT_SYMBOL_GPL(wl1271_cmd_test);
 851
 852 /**
 853  * read acx from firmware
 854  *
 855  * @wl: wl struct
 856  * @id: acx id
 857  * @buf: buffer for the response, including all headers, must work with dma
 858  * @len: length of buf
 859  */
 860 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf,
 861                            size_t cmd_len, size_t res_len)
 862 {
 863         struct acx_header *acx = buf;
 864         int ret;
 865
 866         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 867
 868         acx->id = cpu_to_le16(id);
 869
 870         /* response payload length, does not include any headers */
 871         acx->len = cpu_to_le16(res_len - sizeof(*acx));
 872
 873         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, cmd_len, res_len);
 874         if (ret < 0)
 875                 wl1271_error("INTERROGATE command failed");
 876
 877         return ret;
 878 }
 879
 880 /**
 881  * write acx value to firmware
 882  *
 883  * @wl: wl struct
 884  * @id: acx id
 885  * @buf: buffer containing acx, including all headers, must work with dma
 886  * @len: length of buf
 887  * @valid_rets: bitmap of valid cmd status codes (i.e. return values).
 888  * return the cmd status on success.
 889  */
 890 int wlcore_cmd_configure_failsafe(struct wl1271 *wl, u16 id, void *buf,
 891                                   size_t len, unsigned long valid_rets)
 892 {
 893         struct acx_header *acx = buf;
 894         int ret;
 895
 896         wl1271_debug(DEBUG_CMD, "cmd configure (%d)", id);
 897
 898         if (WARN_ON_ONCE(len < sizeof(*acx)))
 899                 return -EIO;
 900
 901         acx->id = cpu_to_le16(id);
 902
 903         /* payload length, does not include any headers */
 904         acx->len = cpu_to_le16(len - sizeof(*acx));
 905
 906         ret = wlcore_cmd_send_failsafe(wl, CMD_CONFIGURE, acx, len, 0,
 907                                        valid_rets);
 908         if (ret < 0) {
 909                 wl1271_warning("CONFIGURE command NOK");
 910                 return ret;
 911         }
 912
 913         return ret;
 914 }
 915
 916 /*
 917  * wrapper for wlcore_cmd_configure that accepts only success status.
 918  * return 0 on success
 919  */
 920 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 921 {
 922         int ret = wlcore_cmd_configure_failsafe(wl, id, buf, len, 0);
 923
 924         if (ret < 0)
 925                 return ret;
 926         return 0;
 927 }
 928 EXPORT_SYMBOL_GPL(wl1271_cmd_configure);
 929
 930 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 931 {
 932         struct cmd_enabledisable_path *cmd;
 933         int ret;
 934         u16 cmd_rx, cmd_tx;
 935
 936         wl1271_debug(DEBUG_CMD, "cmd data path");
 937
 938         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 939         if (!cmd) {
 940                 ret = -ENOMEM;
 941                 goto out;
 942         }
 943
 944         /* the channel here is only used for calibration, so hardcoded to 1 */
 945         cmd->channel = 1;
 946
 947         if (enable) {
 948                 cmd_rx = CMD_ENABLE_RX;
 949                 cmd_tx = CMD_ENABLE_TX;
 950         } else {
 951                 cmd_rx = CMD_DISABLE_RX;
 952                 cmd_tx = CMD_DISABLE_TX;
 953         }
 954
 955         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 956         if (ret < 0) {
 957                 wl1271_error("rx %s cmd for channel %d failed",
 958                              enable ? "start" : "stop", cmd->channel);
 959                 goto out;
 960         }
 961
 962         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 963                      enable ? "start" : "stop", cmd->channel);
 964
 965         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 966         if (ret < 0) {
 967                 wl1271_error("tx %s cmd for channel %d failed",
 968                              enable ? "start" : "stop", cmd->channel);
 969                 goto out;
 970         }
 971
 972         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 973                      enable ? "start" : "stop", cmd->channel);
 974
 975 out:
 976         kfree(cmd);
 977         return ret;
 978 }
 979 EXPORT_SYMBOL_GPL(wl1271_cmd_data_path);
 980
 981 int wl1271_cmd_ps_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 982                        u8 ps_mode, u16 auto_ps_timeout)
 983 {
 984         struct wl1271_cmd_ps_params *ps_params = NULL;
 985         int ret = 0;
 986
 987         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 988
 989         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 990         if (!ps_params) {
 991                 ret = -ENOMEM;
 992                 goto out;
 993         }
 994
 995         ps_params->role_id = wlvif->role_id;
 996         ps_params->ps_mode = ps_mode;
 997         ps_params->auto_ps_timeout = auto_ps_timeout;
 998
 999         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
1000                               sizeof(*ps_params), 0);
1001         if (ret < 0) {
1002                 wl1271_error("cmd set_ps_mode failed");
1003                 goto out;
1004         }
1005
1006 out:
1007         kfree(ps_params);
1008         return ret;
1009 }
1010
1011 int wl1271_cmd_template_set(struct wl1271 *wl, u8 role_id,
1012                             u16 template_id, void *buf, size_t buf_len,
1013                             int index, u32 rates)
1014 {
1015         struct wl1271_cmd_template_set *cmd;
1016         int ret = 0;
1017
1018         wl1271_debug(DEBUG_CMD, "cmd template_set %d (role %d)",
1019                      template_id, role_id);
1020
1021         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
1022         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
1023
1024         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1025         if (!cmd) {
1026                 ret = -ENOMEM;
1027                 goto out;
1028         }
1029
1030         /* during initialization wlvif is NULL */
1031         cmd->role_id = role_id;
1032         cmd->len = cpu_to_le16(buf_len);
1033         cmd->template_type = template_id;
1034         cmd->enabled_rates = cpu_to_le32(rates);
1035         cmd->short_retry_limit = wl->conf.tx.tmpl_short_retry_limit;
1036         cmd->long_retry_limit = wl->conf.tx.tmpl_long_retry_limit;
1037         cmd->index = index;
1038
1039         if (buf)
1040                 memcpy(cmd->template_data, buf, buf_len);
1041
1042         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
1043         if (ret < 0) {
1044                 wl1271_warning("cmd set_template failed: %d", ret);
1045                 goto out_free;
1046         }
1047
1048 out_free:
1049         kfree(cmd);
1050
1051 out:
1052         return ret;
1053 }
1054
1055 int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1056 {
1057         struct sk_buff *skb = NULL;
1058         int size;
1059         void *ptr;
1060         int ret = -ENOMEM;
1061
1062
1063         if (wlvif->bss_type == BSS_TYPE_IBSS) {
1064                 size = sizeof(struct wl12xx_null_data_template);
1065                 ptr = NULL;
1066         } else {
1067                 skb = ieee80211_nullfunc_get(wl->hw,
1068                                              wl12xx_wlvif_to_vif(wlvif),
1069                                              false);
1070                 if (!skb)
1071                         goto out;
1072                 size = skb->len;
1073                 ptr = skb->data;
1074         }
1075
1076         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1077                                       CMD_TEMPL_NULL_DATA, ptr, size, 0,
1078                                       wlvif->basic_rate);
1079
1080 out:
1081         dev_kfree_skb(skb);
1082         if (ret)
1083                 wl1271_warning("cmd buld null data failed %d", ret);
1084
1085         return ret;
1086
1087 }
1088
1089 int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,
1090                                    struct wl12xx_vif *wlvif)
1091 {
1092         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1093         struct sk_buff *skb = NULL;
1094         int ret = -ENOMEM;
1095
1096         skb = ieee80211_nullfunc_get(wl->hw, vif, false);
1097         if (!skb)
1098                 goto out;
1099
1100         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV,
1101                                       skb->data, skb->len,
1102                                       wlvif->sta.klv_template_id,
1103                                       wlvif->basic_rate);
1104
1105 out:
1106         dev_kfree_skb(skb);
1107         if (ret)
1108                 wl1271_warning("cmd build klv null data failed %d", ret);
1109
1110         return ret;
1111
1112 }
1113
1114 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1115                              u16 aid)
1116 {
1117         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1118         struct sk_buff *skb;
1119         int ret = 0;
1120
1121         skb = ieee80211_pspoll_get(wl->hw, vif);
1122         if (!skb)
1123                 goto out;
1124
1125         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1126                                       CMD_TEMPL_PS_POLL, skb->data,
1127                                       skb->len, 0, wlvif->basic_rate_set);
1128
1129 out:
1130         dev_kfree_skb(skb);
1131         return ret;
1132 }
1133
1134 int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1135                                u8 role_id, u8 band,
1136                                const u8 *ssid, size_t ssid_len,
1137                                const u8 *ie0, size_t ie0_len, const u8 *ie1,
1138                                size_t ie1_len, bool sched_scan)
1139 {
1140         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1141         struct sk_buff *skb;
1142         int ret;
1143         u32 rate;
1144         u16 template_id_2_4 = wl->scan_templ_id_2_4;
1145         u16 template_id_5 = wl->scan_templ_id_5;
1146
1147         wl1271_debug(DEBUG_SCAN, "build probe request band %d", band);
1148
1149         skb = ieee80211_probereq_get(wl->hw, vif->addr, ssid, ssid_len,
1150                                      ie0_len + ie1_len);
1151         if (!skb) {
1152                 ret = -ENOMEM;
1153                 goto out;
1154         }
1155         if (ie0_len)
1156                 skb_put_data(skb, ie0, ie0_len);
1157         if (ie1_len)
1158                 skb_put_data(skb, ie1, ie1_len);
1159
1160         if (sched_scan &&
1161             (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) {
1162                 template_id_2_4 = wl->sched_scan_templ_id_2_4;
1163                 template_id_5 = wl->sched_scan_templ_id_5;
1164         }
1165
1166         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
1167         if (band == NL80211_BAND_2GHZ)
1168                 ret = wl1271_cmd_template_set(wl, role_id,
1169                                               template_id_2_4,
1170                                               skb->data, skb->len, 0, rate);
1171         else
1172                 ret = wl1271_cmd_template_set(wl, role_id,
1173                                               template_id_5,
1174                                               skb->data, skb->len, 0, rate);
1175
1176 out:
1177         dev_kfree_skb(skb);
1178         return ret;
1179 }
1180 EXPORT_SYMBOL_GPL(wl12xx_cmd_build_probe_req);
1181
1182 struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,
1183                                               struct wl12xx_vif *wlvif,
1184                                               struct sk_buff *skb)
1185 {
1186         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1187         int ret;
1188         u32 rate;
1189
1190         if (!skb)
1191                 skb = ieee80211_ap_probereq_get(wl->hw, vif);
1192         if (!skb)
1193                 goto out;
1194
1195         wl1271_debug(DEBUG_SCAN, "set ap probe request template");
1196
1197         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]);
1198         if (wlvif->band == NL80211_BAND_2GHZ)
1199                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1200                                               CMD_TEMPL_CFG_PROBE_REQ_2_4,
1201                                               skb->data, skb->len, 0, rate);
1202         else
1203                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1204                                               CMD_TEMPL_CFG_PROBE_REQ_5,
1205                                               skb->data, skb->len, 0, rate);
1206
1207         if (ret < 0)
1208                 wl1271_error("Unable to set ap probe request template.");
1209
1210 out:
1211         return skb;
1212 }
1213
1214 int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1215 {
1216         int ret, extra = 0;
1217         u16 fc;
1218         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1219         struct sk_buff *skb;
1220         struct wl12xx_arp_rsp_template *tmpl;
1221         struct ieee80211_hdr_3addr *hdr;
1222         struct arphdr *arp_hdr;
1223
1224         skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) +
1225                             WL1271_EXTRA_SPACE_MAX);
1226         if (!skb) {
1227                 wl1271_error("failed to allocate buffer for arp rsp template");
1228                 return -ENOMEM;
1229         }
1230
1231         skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX);
1232
1233         tmpl = skb_put_zero(skb, sizeof(*tmpl));
1234
1235         /* llc layer */
1236         memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header));
1237         tmpl->llc_type = cpu_to_be16(ETH_P_ARP);
1238
1239         /* arp header */
1240         arp_hdr = &tmpl->arp_hdr;
1241         arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);
1242         arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);
1243         arp_hdr->ar_hln = ETH_ALEN;
1244         arp_hdr->ar_pln = 4;
1245         arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);
1246
1247         /* arp payload */
1248         memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN);
1249         tmpl->sender_ip = wlvif->ip_addr;
1250
1251         /* encryption space */
1252         switch (wlvif->encryption_type) {
1253         case KEY_TKIP:
1254                 if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
1255                         extra = WL1271_EXTRA_SPACE_TKIP;
1256                 break;
1257         case KEY_AES:
1258                 extra = WL1271_EXTRA_SPACE_AES;
1259                 break;
1260         case KEY_NONE:
1261         case KEY_WEP:
1262         case KEY_GEM:
1263                 extra = 0;
1264                 break;
1265         default:
1266                 wl1271_warning("Unknown encryption type: %d",
1267                                wlvif->encryption_type);
1268                 ret = -EINVAL;
1269                 goto out;
1270         }
1271
1272         if (extra) {
1273                 u8 *space = skb_push(skb, extra);
1274                 memset(space, 0, extra);
1275         }
1276
1277         /* QoS header - BE */
1278         if (wlvif->sta.qos)
1279                 memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16));
1280
1281         /* mac80211 header */
1282         hdr = skb_push(skb, sizeof(*hdr));
1283         memset(hdr, 0, sizeof(*hdr));
1284         fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS;
1285         if (wlvif->sta.qos)
1286                 fc |= IEEE80211_STYPE_QOS_DATA;
1287         else
1288                 fc |= IEEE80211_STYPE_DATA;
1289         if (wlvif->encryption_type != KEY_NONE)
1290                 fc |= IEEE80211_FCTL_PROTECTED;
1291
1292         hdr->frame_control = cpu_to_le16(fc);
1293         memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN);
1294         memcpy(hdr->addr2, vif->addr, ETH_ALEN);
1295         eth_broadcast_addr(hdr->addr3);
1296
1297         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP,
1298                                       skb->data, skb->len, 0,
1299                                       wlvif->basic_rate);
1300 out:
1301         dev_kfree_skb(skb);
1302         return ret;
1303 }
1304
1305 int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif)
1306 {
1307         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
1308         struct ieee80211_qos_hdr template;
1309
1310         memset(&template, 0, sizeof(template));
1311
1312         memcpy(template.addr1, vif->bss_conf.bssid, ETH_ALEN);
1313         memcpy(template.addr2, vif->addr, ETH_ALEN);
1314         memcpy(template.addr3, vif->bss_conf.bssid, ETH_ALEN);
1315
1316         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1317                                              IEEE80211_STYPE_QOS_NULLFUNC |
1318                                              IEEE80211_FCTL_TODS);
1319
1320         /* FIXME: not sure what priority to use here */
1321         template.qos_ctrl = cpu_to_le16(0);
1322
1323         return wl1271_cmd_template_set(wl, wlvif->role_id,
1324                                        CMD_TEMPL_QOS_NULL_DATA, &template,
1325                                        sizeof(template), 0,
1326                                        wlvif->basic_rate);
1327 }
1328
1329 int wl12xx_cmd_set_default_wep_key(struct wl1271 *wl, u8 id, u8 hlid)
1330 {
1331         struct wl1271_cmd_set_keys *cmd;
1332         int ret = 0;
1333
1334         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
1335
1336         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1337         if (!cmd) {
1338                 ret = -ENOMEM;
1339                 goto out;
1340         }
1341
1342         cmd->hlid = hlid;
1343         cmd->key_id = id;
1344         cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1345         cmd->key_action = cpu_to_le16(KEY_SET_ID);
1346         cmd->key_type = KEY_WEP;
1347
1348         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1349         if (ret < 0) {
1350                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
1351                 goto out;
1352         }
1353
1354 out:
1355         kfree(cmd);
1356
1357         return ret;
1358 }
1359
1360 int wl1271_cmd_set_sta_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1361                        u16 action, u8 id, u8 key_type,
1362                        u8 key_size, const u8 *key, const u8 *addr,
1363                        u32 tx_seq_32, u16 tx_seq_16)
1364 {
1365         struct wl1271_cmd_set_keys *cmd;
1366         int ret = 0;
1367
1368         /* hlid might have already been deleted */
1369         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
1370                 return 0;
1371
1372         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1373         if (!cmd) {
1374                 ret = -ENOMEM;
1375                 goto out;
1376         }
1377
1378         cmd->hlid = wlvif->sta.hlid;
1379
1380         if (key_type == KEY_WEP)
1381                 cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1382         else if (is_broadcast_ether_addr(addr))
1383                 cmd->lid_key_type = BROADCAST_LID_TYPE;
1384         else
1385                 cmd->lid_key_type = UNICAST_LID_TYPE;
1386
1387         cmd->key_action = cpu_to_le16(action);
1388         cmd->key_size = key_size;
1389         cmd->key_type = key_type;
1390
1391         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1392         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1393
1394         cmd->key_id = id;
1395
1396         if (key_type == KEY_TKIP) {
1397                 /*
1398                  * We get the key in the following form:
1399                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1400                  * but the target is expecting:
1401                  * TKIP - RX MIC - TX MIC
1402                  */
1403                 memcpy(cmd->key, key, 16);
1404                 memcpy(cmd->key + 16, key + 24, 8);
1405                 memcpy(cmd->key + 24, key + 16, 8);
1406
1407         } else {
1408                 memcpy(cmd->key, key, key_size);
1409         }
1410
1411         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1412
1413         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1414         if (ret < 0) {
1415                 wl1271_warning("could not set keys");
1416                 goto out;
1417         }
1418
1419 out:
1420         kfree(cmd);
1421
1422         return ret;
1423 }
1424
1425 /*
1426  * TODO: merge with sta/ibss into 1 set_key function.
1427  * note there are slight diffs
1428  */
1429 int wl1271_cmd_set_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1430                           u16 action, u8 id, u8 key_type,
1431                           u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
1432                           u16 tx_seq_16, bool is_pairwise)
1433 {
1434         struct wl1271_cmd_set_keys *cmd;
1435         int ret = 0;
1436         u8 lid_type;
1437
1438         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1439         if (!cmd)
1440                 return -ENOMEM;
1441
1442         if (hlid == wlvif->ap.bcast_hlid) {
1443                 if (key_type == KEY_WEP)
1444                         lid_type = WEP_DEFAULT_LID_TYPE;
1445                 else
1446                         lid_type = BROADCAST_LID_TYPE;
1447         } else if (is_pairwise) {
1448                 lid_type = UNICAST_LID_TYPE;
1449         } else {
1450                 lid_type = BROADCAST_LID_TYPE;
1451         }
1452
1453         wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d"
1454                      " hlid: %d", (int)action, (int)id, (int)lid_type,
1455                      (int)key_type, (int)hlid);
1456
1457         cmd->lid_key_type = lid_type;
1458         cmd->hlid = hlid;
1459         cmd->key_action = cpu_to_le16(action);
1460         cmd->key_size = key_size;
1461         cmd->key_type = key_type;
1462         cmd->key_id = id;
1463         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1464         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1465
1466         if (key_type == KEY_TKIP) {
1467                 /*
1468                  * We get the key in the following form:
1469                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1470                  * but the target is expecting:
1471                  * TKIP - RX MIC - TX MIC
1472                  */
1473                 memcpy(cmd->key, key, 16);
1474                 memcpy(cmd->key + 16, key + 24, 8);
1475                 memcpy(cmd->key + 24, key + 16, 8);
1476         } else {
1477                 memcpy(cmd->key, key, key_size);
1478         }
1479
1480         wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd));
1481
1482         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1483         if (ret < 0) {
1484                 wl1271_warning("could not set ap keys");
1485                 goto out;
1486         }
1487
1488 out:
1489         kfree(cmd);
1490         return ret;
1491 }
1492
1493 int wl12xx_cmd_set_peer_state(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1494                               u8 hlid)
1495 {
1496         struct wl12xx_cmd_set_peer_state *cmd;
1497         int ret = 0;
1498
1499         wl1271_debug(DEBUG_CMD, "cmd set peer state (hlid=%d)", hlid);
1500
1501         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1502         if (!cmd) {
1503                 ret = -ENOMEM;
1504                 goto out;
1505         }
1506
1507         cmd->hlid = hlid;
1508         cmd->state = WL1271_CMD_STA_STATE_CONNECTED;
1509
1510         /* wmm param is valid only for station role */
1511         if (wlvif->bss_type == BSS_TYPE_STA_BSS)
1512                 cmd->wmm = wlvif->wmm_enabled;
1513
1514         ret = wl1271_cmd_send(wl, CMD_SET_PEER_STATE, cmd, sizeof(*cmd), 0);
1515         if (ret < 0) {
1516                 wl1271_error("failed to send set peer state command");
1517                 goto out_free;
1518         }
1519
1520 out_free:
1521         kfree(cmd);
1522
1523 out:
1524         return ret;
1525 }
1526
1527 int wl12xx_cmd_add_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1528                         struct ieee80211_sta *sta, u8 hlid)
1529 {
1530         struct wl12xx_cmd_add_peer *cmd;
1531         int i, ret;
1532         u32 sta_rates;
1533
1534         wl1271_debug(DEBUG_CMD, "cmd add peer %d", (int)hlid);
1535
1536         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1537         if (!cmd) {
1538                 ret = -ENOMEM;
1539                 goto out;
1540         }
1541
1542         memcpy(cmd->addr, sta->addr, ETH_ALEN);
1543         cmd->bss_index = WL1271_AP_BSS_INDEX;
1544         cmd->aid = sta->aid;
1545         cmd->hlid = hlid;
1546         cmd->sp_len = sta->max_sp;
1547         cmd->wmm = sta->wme ? 1 : 0;
1548         cmd->session_id = wl->session_ids[hlid];
1549         cmd->role_id = wlvif->role_id;
1550
1551         for (i = 0; i < NUM_ACCESS_CATEGORIES_COPY; i++)
1552                 if (sta->wme && (sta->uapsd_queues & BIT(i)))
1553                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1554                                         WL1271_PSD_UPSD_TRIGGER;
1555                 else
1556                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1557                                         WL1271_PSD_LEGACY;
1558
1559
1560         sta_rates = sta->supp_rates[wlvif->band];
1561         if (sta->ht_cap.ht_supported)
1562                 sta_rates |=
1563                         (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET) |
1564                         (sta->ht_cap.mcs.rx_mask[1] << HW_MIMO_RATES_OFFSET);
1565
1566         cmd->supported_rates =
1567                 cpu_to_le32(wl1271_tx_enabled_rates_get(wl, sta_rates,
1568                                                         wlvif->band));
1569
1570         if (!cmd->supported_rates) {
1571                 wl1271_debug(DEBUG_CMD,
1572                              "peer has no supported rates yet, configuring basic rates: 0x%x",
1573                              wlvif->basic_rate_set);
1574                 cmd->supported_rates = cpu_to_le32(wlvif->basic_rate_set);
1575         }
1576
1577         wl1271_debug(DEBUG_CMD, "new peer rates=0x%x queues=0x%x",
1578                      cmd->supported_rates, sta->uapsd_queues);
1579
1580         ret = wl1271_cmd_send(wl, CMD_ADD_PEER, cmd, sizeof(*cmd), 0);
1581         if (ret < 0) {
1582                 wl1271_error("failed to initiate cmd add peer");
1583                 goto out_free;
1584         }
1585
1586 out_free:
1587         kfree(cmd);
1588
1589 out:
1590         return ret;
1591 }
1592
1593 int wl12xx_cmd_remove_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1594                            u8 hlid)
1595 {
1596         struct wl12xx_cmd_remove_peer *cmd;
1597         int ret;
1598         bool timeout = false;
1599
1600         wl1271_debug(DEBUG_CMD, "cmd remove peer %d", (int)hlid);
1601
1602         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1603         if (!cmd) {
1604                 ret = -ENOMEM;
1605                 goto out;
1606         }
1607
1608         cmd->hlid = hlid;
1609         /* We never send a deauth, mac80211 is in charge of this */
1610         cmd->reason_opcode = 0;
1611         cmd->send_deauth_flag = 0;
1612         cmd->role_id = wlvif->role_id;
1613
1614         ret = wl1271_cmd_send(wl, CMD_REMOVE_PEER, cmd, sizeof(*cmd), 0);
1615         if (ret < 0) {
1616                 wl1271_error("failed to initiate cmd remove peer");
1617                 goto out_free;
1618         }
1619
1620         ret = wl->ops->wait_for_event(wl,
1621                                       WLCORE_EVENT_PEER_REMOVE_COMPLETE,
1622                                       &timeout);
1623
1624         /*
1625          * We are ok with a timeout here. The event is sometimes not sent
1626          * due to a firmware bug. In case of another error (like SDIO timeout)
1627          * queue a recovery.
1628          */
1629         if (ret)
1630                 wl12xx_queue_recovery_work(wl);
1631
1632 out_free:
1633         kfree(cmd);
1634
1635 out:
1636         return ret;
1637 }
1638
1639 static int wlcore_get_reg_conf_ch_idx(enum nl80211_band band, u16 ch)
1640 {
1641         /*
1642          * map the given band/channel to the respective predefined
1643          * bit expected by the fw
1644          */
1645         switch (band) {
1646         case NL80211_BAND_2GHZ:
1647                 /* channels 1..14 are mapped to 0..13 */
1648                 if (ch >= 1 && ch <= 14)
1649                         return ch - 1;
1650                 break;
1651         case NL80211_BAND_5GHZ:
1652                 switch (ch) {
1653                 case 8 ... 16:
1654                         /* channels 8,12,16 are mapped to 18,19,20 */
1655                         return 18 + (ch-8)/4;
1656                 case 34 ... 48:
1657                         /* channels 34,36..48 are mapped to 21..28 */
1658                         return 21 + (ch-34)/2;
1659                 case 52 ... 64:
1660                         /* channels 52,56..64 are mapped to 29..32 */
1661                         return 29 + (ch-52)/4;
1662                 case 100 ... 140:
1663                         /* channels 100,104..140 are mapped to 33..43 */
1664                         return 33 + (ch-100)/4;
1665                 case 149 ... 165:
1666                         /* channels 149,153..165 are mapped to 44..48 */
1667                         return 44 + (ch-149)/4;
1668                 default:
1669                         break;
1670                 }
1671                 break;
1672         default:
1673                 break;
1674         }
1675
1676         wl1271_error("%s: unknown band/channel: %d/%d", __func__, band, ch);
1677         return -1;
1678 }
1679
1680 void wlcore_set_pending_regdomain_ch(struct wl1271 *wl, u16 channel,
1681                                      enum nl80211_band band)
1682 {
1683         int ch_bit_idx = 0;
1684
1685         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1686                 return;
1687
1688         ch_bit_idx = wlcore_get_reg_conf_ch_idx(band, channel);
1689
1690         if (ch_bit_idx >= 0 && ch_bit_idx <= WL1271_MAX_CHANNELS)
1691                 __set_bit_le(ch_bit_idx, (long *)wl->reg_ch_conf_pending);
1692 }
1693
1694 int wlcore_cmd_regdomain_config_locked(struct wl1271 *wl)
1695 {
1696         struct wl12xx_cmd_regdomain_dfs_config *cmd = NULL;
1697         int ret = 0, i, b, ch_bit_idx;
1698         __le32 tmp_ch_bitmap[2] __aligned(sizeof(unsigned long));
1699         struct wiphy *wiphy = wl->hw->wiphy;
1700         struct ieee80211_supported_band *band;
1701         bool timeout = false;
1702
1703         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1704                 return 0;
1705
1706         wl1271_debug(DEBUG_CMD, "cmd reg domain config");
1707
1708         memcpy(tmp_ch_bitmap, wl->reg_ch_conf_pending, sizeof(tmp_ch_bitmap));
1709
1710         for (b = NL80211_BAND_2GHZ; b <= NL80211_BAND_5GHZ; b++) {
1711                 band = wiphy->bands[b];
1712                 for (i = 0; i < band->n_channels; i++) {
1713                         struct ieee80211_channel *channel = &band->channels[i];
1714                         u16 ch = channel->hw_value;
1715                         u32 flags = channel->flags;
1716
1717                         if (flags & (IEEE80211_CHAN_DISABLED |
1718                                      IEEE80211_CHAN_NO_IR))
1719                                 continue;
1720
1721                         if ((flags & IEEE80211_CHAN_RADAR) &&
1722                             channel->dfs_state != NL80211_DFS_AVAILABLE)
1723                                 continue;
1724
1725                         ch_bit_idx = wlcore_get_reg_conf_ch_idx(b, ch);
1726                         if (ch_bit_idx < 0)
1727                                 continue;
1728
1729                         __set_bit_le(ch_bit_idx, (long *)tmp_ch_bitmap);
1730                 }
1731         }
1732
1733         if (!memcmp(tmp_ch_bitmap, wl->reg_ch_conf_last, sizeof(tmp_ch_bitmap)))
1734                 goto out;
1735
1736         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1737         if (!cmd) {
1738                 ret = -ENOMEM;
1739                 goto out;
1740         }
1741
1742         cmd->ch_bit_map1 = tmp_ch_bitmap[0];
1743         cmd->ch_bit_map2 = tmp_ch_bitmap[1];
1744         cmd->dfs_region = wl->dfs_region;
1745
1746         wl1271_debug(DEBUG_CMD,
1747                      "cmd reg domain bitmap1: 0x%08x, bitmap2: 0x%08x",
1748                      cmd->ch_bit_map1, cmd->ch_bit_map2);
1749
1750         ret = wl1271_cmd_send(wl, CMD_DFS_CHANNEL_CONFIG, cmd, sizeof(*cmd), 0);
1751         if (ret < 0) {
1752                 wl1271_error("failed to send reg domain dfs config");
1753                 goto out;
1754         }
1755
1756         ret = wl->ops->wait_for_event(wl,
1757                                       WLCORE_EVENT_DFS_CONFIG_COMPLETE,
1758                                       &timeout);
1759         if (ret < 0 || timeout) {
1760                 wl1271_error("reg domain conf %serror",
1761                              timeout ? "completion " : "");
1762                 ret = timeout ? -ETIMEDOUT : ret;
1763                 goto out;
1764         }
1765
1766         memcpy(wl->reg_ch_conf_last, tmp_ch_bitmap, sizeof(tmp_ch_bitmap));
1767         memset(wl->reg_ch_conf_pending, 0, sizeof(wl->reg_ch_conf_pending));
1768
1769 out:
1770         kfree(cmd);
1771         return ret;
1772 }
1773
1774 int wl12xx_cmd_config_fwlog(struct wl1271 *wl)
1775 {
1776         struct wl12xx_cmd_config_fwlog *cmd;
1777         int ret = 0;
1778
1779         wl1271_debug(DEBUG_CMD, "cmd config firmware logger");
1780
1781         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1782         if (!cmd) {
1783                 ret = -ENOMEM;
1784                 goto out;
1785         }
1786
1787         cmd->logger_mode = wl->conf.fwlog.mode;
1788         cmd->log_severity = wl->conf.fwlog.severity;
1789         cmd->timestamp = wl->conf.fwlog.timestamp;
1790         cmd->output = wl->conf.fwlog.output;
1791         cmd->threshold = wl->conf.fwlog.threshold;
1792
1793         ret = wl1271_cmd_send(wl, CMD_CONFIG_FWLOGGER, cmd, sizeof(*cmd), 0);
1794         if (ret < 0) {
1795                 wl1271_error("failed to send config firmware logger command");
1796                 goto out_free;
1797         }
1798
1799 out_free:
1800         kfree(cmd);
1801
1802 out:
1803         return ret;
1804 }
1805
1806 int wl12xx_cmd_start_fwlog(struct wl1271 *wl)
1807 {
1808         struct wl12xx_cmd_start_fwlog *cmd;
1809         int ret = 0;
1810
1811         wl1271_debug(DEBUG_CMD, "cmd start firmware logger");
1812
1813         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1814         if (!cmd) {
1815                 ret = -ENOMEM;
1816                 goto out;
1817         }
1818
1819         ret = wl1271_cmd_send(wl, CMD_START_FWLOGGER, cmd, sizeof(*cmd), 0);
1820         if (ret < 0) {
1821                 wl1271_error("failed to send start firmware logger command");
1822                 goto out_free;
1823         }
1824
1825 out_free:
1826         kfree(cmd);
1827
1828 out:
1829         return ret;
1830 }
1831
1832 int wl12xx_cmd_stop_fwlog(struct wl1271 *wl)
1833 {
1834         struct wl12xx_cmd_stop_fwlog *cmd;
1835         int ret = 0;
1836
1837         wl1271_debug(DEBUG_CMD, "cmd stop firmware logger");
1838
1839         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1840         if (!cmd) {
1841                 ret = -ENOMEM;
1842                 goto out;
1843         }
1844
1845         ret = wl1271_cmd_send(wl, CMD_STOP_FWLOGGER, cmd, sizeof(*cmd), 0);
1846         if (ret < 0) {
1847                 wl1271_error("failed to send stop firmware logger command");
1848                 goto out_free;
1849         }
1850
1851 out_free:
1852         kfree(cmd);
1853
1854 out:
1855         return ret;
1856 }
1857
1858 static int wl12xx_cmd_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1859                           u8 role_id, enum nl80211_band band, u8 channel)
1860 {
1861         struct wl12xx_cmd_roc *cmd;
1862         int ret = 0;
1863
1864         wl1271_debug(DEBUG_CMD, "cmd roc %d (%d)", channel, role_id);
1865
1866         if (WARN_ON(role_id == WL12XX_INVALID_ROLE_ID))
1867                 return -EINVAL;
1868
1869         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1870         if (!cmd) {
1871                 ret = -ENOMEM;
1872                 goto out;
1873         }
1874
1875         cmd->role_id = role_id;
1876         cmd->channel = channel;
1877         switch (band) {
1878         case NL80211_BAND_2GHZ:
1879                 cmd->band = WLCORE_BAND_2_4GHZ;
1880                 break;
1881         case NL80211_BAND_5GHZ:
1882                 cmd->band = WLCORE_BAND_5GHZ;
1883                 break;
1884         default:
1885                 wl1271_error("roc - unknown band: %d", (int)wlvif->band);
1886                 ret = -EINVAL;
1887                 goto out_free;
1888         }
1889
1890
1891         ret = wl1271_cmd_send(wl, CMD_REMAIN_ON_CHANNEL, cmd, sizeof(*cmd), 0);
1892         if (ret < 0) {
1893                 wl1271_error("failed to send ROC command");
1894                 goto out_free;
1895         }
1896
1897 out_free:
1898         kfree(cmd);
1899
1900 out:
1901         return ret;
1902 }
1903
1904 static int wl12xx_cmd_croc(struct wl1271 *wl, u8 role_id)
1905 {
1906         struct wl12xx_cmd_croc *cmd;
1907         int ret = 0;
1908
1909         wl1271_debug(DEBUG_CMD, "cmd croc (%d)", role_id);
1910
1911         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1912         if (!cmd) {
1913                 ret = -ENOMEM;
1914                 goto out;
1915         }
1916         cmd->role_id = role_id;
1917
1918         ret = wl1271_cmd_send(wl, CMD_CANCEL_REMAIN_ON_CHANNEL, cmd,
1919                               sizeof(*cmd), 0);
1920         if (ret < 0) {
1921                 wl1271_error("failed to send ROC command");
1922                 goto out_free;
1923         }
1924
1925 out_free:
1926         kfree(cmd);
1927
1928 out:
1929         return ret;
1930 }
1931
1932 int wl12xx_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 role_id,
1933                enum nl80211_band band, u8 channel)
1934 {
1935         int ret = 0;
1936
1937         if (WARN_ON(test_bit(role_id, wl->roc_map)))
1938                 return 0;
1939
1940         ret = wl12xx_cmd_roc(wl, wlvif, role_id, band, channel);
1941         if (ret < 0)
1942                 goto out;
1943
1944         __set_bit(role_id, wl->roc_map);
1945 out:
1946         return ret;
1947 }
1948
1949 int wl12xx_croc(struct wl1271 *wl, u8 role_id)
1950 {
1951         int ret = 0;
1952
1953         if (WARN_ON(!test_bit(role_id, wl->roc_map)))
1954                 return 0;
1955
1956         ret = wl12xx_cmd_croc(wl, role_id);
1957         if (ret < 0)
1958                 goto out;
1959
1960         __clear_bit(role_id, wl->roc_map);
1961
1962         /*
1963          * Rearm the tx watchdog when removing the last ROC. This prevents
1964          * recoveries due to just finished ROCs - when Tx hasn't yet had
1965          * a chance to get out.
1966          */
1967         if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES)
1968                 wl12xx_rearm_tx_watchdog_locked(wl);
1969 out:
1970         return ret;
1971 }
1972
1973 int wl12xx_cmd_stop_channel_switch(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1974 {
1975         struct wl12xx_cmd_stop_channel_switch *cmd;
1976         int ret;
1977
1978         wl1271_debug(DEBUG_ACX, "cmd stop channel switch");
1979
1980         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1981         if (!cmd) {
1982                 ret = -ENOMEM;
1983                 goto out;
1984         }
1985
1986         cmd->role_id = wlvif->role_id;
1987
1988         ret = wl1271_cmd_send(wl, CMD_STOP_CHANNEL_SWICTH, cmd, sizeof(*cmd), 0);
1989         if (ret < 0) {
1990                 wl1271_error("failed to stop channel switch command");
1991                 goto out_free;
1992         }
1993
1994 out_free:
1995         kfree(cmd);
1996
1997 out:
1998         return ret;
1999 }
2000
2001 /* start dev role and roc on its channel */
2002 int wl12xx_start_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2003                      enum nl80211_band band, int channel)
2004 {
2005         int ret;
2006
2007         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2008                       wlvif->bss_type == BSS_TYPE_IBSS)))
2009                 return -EINVAL;
2010
2011         /* the dev role is already started for p2p mgmt interfaces */
2012         if (!wlcore_is_p2p_mgmt(wlvif)) {
2013                 ret = wl12xx_cmd_role_enable(wl,
2014                                              wl12xx_wlvif_to_vif(wlvif)->addr,
2015                                              WL1271_ROLE_DEVICE,
2016                                              &wlvif->dev_role_id);
2017                 if (ret < 0)
2018                         goto out;
2019         }
2020
2021         ret = wl12xx_cmd_role_start_dev(wl, wlvif, band, channel);
2022         if (ret < 0)
2023                 goto out_disable;
2024
2025         ret = wl12xx_roc(wl, wlvif, wlvif->dev_role_id, band, channel);
2026         if (ret < 0)
2027                 goto out_stop;
2028
2029         return 0;
2030
2031 out_stop:
2032         wl12xx_cmd_role_stop_dev(wl, wlvif);
2033 out_disable:
2034         if (!wlcore_is_p2p_mgmt(wlvif))
2035                 wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2036 out:
2037         return ret;
2038 }
2039
2040 /* croc dev hlid, and stop the role */
2041 int wl12xx_stop_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2042 {
2043         int ret;
2044
2045         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2046                       wlvif->bss_type == BSS_TYPE_IBSS)))
2047                 return -EINVAL;
2048
2049         /* flush all pending packets */
2050         ret = wlcore_tx_work_locked(wl);
2051         if (ret < 0)
2052                 goto out;
2053
2054         if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
2055                 ret = wl12xx_croc(wl, wlvif->dev_role_id);
2056                 if (ret < 0)
2057                         goto out;
2058         }
2059
2060         ret = wl12xx_cmd_role_stop_dev(wl, wlvif);
2061         if (ret < 0)
2062                 goto out;
2063
2064         if (!wlcore_is_p2p_mgmt(wlvif)) {
2065                 ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2066                 if (ret < 0)
2067                         goto out;
2068         }
2069
2070 out:
2071         return ret;
2072 }
2073
2074 int wlcore_cmd_generic_cfg(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2075                            u8 feature, u8 enable, u8 value)
2076 {
2077         struct wlcore_cmd_generic_cfg *cmd;
2078         int ret;
2079
2080         wl1271_debug(DEBUG_CMD,
2081                      "cmd generic cfg (role %d feature %d enable %d value %d)",
2082                      wlvif->role_id, feature, enable, value);
2083
2084         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2085         if (!cmd)
2086                 return -ENOMEM;
2087
2088         cmd->role_id = wlvif->role_id;
2089         cmd->feature = feature;
2090         cmd->enable = enable;
2091         cmd->value = value;
2092
2093         ret = wl1271_cmd_send(wl, CMD_GENERIC_CFG, cmd, sizeof(*cmd), 0);
2094         if (ret < 0) {
2095                 wl1271_error("failed to send generic cfg command");
2096                 goto out_free;
2097         }
2098 out_free:
2099         kfree(cmd);
2100         return ret;
2101 }
2102 EXPORT_SYMBOL_GPL(wlcore_cmd_generic_cfg);