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