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