linux/drivers/net/wireless/ti/wlcore/cmd.c
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   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 */
  53static 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 */
 134static 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;
 153fail:
 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 */
 162int 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}
 171EXPORT_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 */
 177int 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
 224out:
 225        kfree(events_vector);
 226        return ret;
 227}
 228EXPORT_SYMBOL_GPL(wlcore_cmd_wait_for_event_or_timeout);
 229
 230int 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
 266out_free:
 267        kfree(cmd);
 268
 269out:
 270        return ret;
 271}
 272
 273int 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
 299out_free:
 300        kfree(cmd);
 301
 302out:
 303        return ret;
 304}
 305
 306static 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
 316int 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
 354void 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
 406u8 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}
 422EXPORT_SYMBOL_GPL(wlcore_get_native_channel_type);
 423
 424static 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
 464err_hlid:
 465        /* clear links on error */
 466        wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 467
 468out_free:
 469        kfree(cmd);
 470
 471out:
 472        return ret;
 473}
 474
 475static 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
 504out_free:
 505        kfree(cmd);
 506
 507out:
 508        return ret;
 509}
 510
 511int 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
 575err_hlid:
 576        /* clear links on error. */
 577        wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 578
 579out_free:
 580        kfree(cmd);
 581
 582out:
 583        return ret;
 584}
 585
 586/* use this function to stop ibss as well */
 587int 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
 615out_free:
 616        kfree(cmd);
 617
 618out:
 619        return ret;
 620}
 621
 622int 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
 719out_free_bcast:
 720        wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 721
 722out_free_global:
 723        wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 724
 725out_free:
 726        kfree(cmd);
 727
 728out:
 729        return ret;
 730}
 731
 732int 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
 756out_free:
 757        kfree(cmd);
 758
 759out:
 760        return ret;
 761}
 762
 763int 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
 815err_hlid:
 816        /* clear links on error. */
 817        wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 818
 819out_free:
 820        kfree(cmd);
 821
 822out:
 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 */
 835int 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}
 854EXPORT_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 */
 864int 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 */
 894int 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 */
 924int 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}
 932EXPORT_SYMBOL_GPL(wl1271_cmd_configure);
 933
 934int 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
 979out:
 980        kfree(cmd);
 981        return ret;
 982}
 983EXPORT_SYMBOL_GPL(wl1271_cmd_data_path);
 984
 985int 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
1010out:
1011        kfree(ps_params);
1012        return ret;
1013}
1014
1015int 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
1052out_free:
1053        kfree(cmd);
1054
1055out:
1056        return ret;
1057}
1058
1059int 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                                             false);
1074                if (!skb)
1075                        goto out;
1076                size = skb->len;
1077                ptr = skb->data;
1078        }
1079
1080        ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1081                                      CMD_TEMPL_NULL_DATA, ptr, size, 0,
1082                                      wlvif->basic_rate);
1083
1084out:
1085        dev_kfree_skb(skb);
1086        if (ret)
1087                wl1271_warning("cmd buld null data failed %d", ret);
1088
1089        return ret;
1090
1091}
1092
1093int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,
1094                                   struct wl12xx_vif *wlvif)
1095{
1096        struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1097        struct sk_buff *skb = NULL;
1098        int ret = -ENOMEM;
1099
1100        skb = ieee80211_nullfunc_get(wl->hw, vif, false);
1101        if (!skb)
1102                goto out;
1103
1104        ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV,
1105                                      skb->data, skb->len,
1106                                      wlvif->sta.klv_template_id,
1107                                      wlvif->basic_rate);
1108
1109out:
1110        dev_kfree_skb(skb);
1111        if (ret)
1112                wl1271_warning("cmd build klv null data failed %d", ret);
1113
1114        return ret;
1115
1116}
1117
1118int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1119                             u16 aid)
1120{
1121        struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1122        struct sk_buff *skb;
1123        int ret = 0;
1124
1125        skb = ieee80211_pspoll_get(wl->hw, vif);
1126        if (!skb)
1127                goto out;
1128
1129        ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1130                                      CMD_TEMPL_PS_POLL, skb->data,
1131                                      skb->len, 0, wlvif->basic_rate_set);
1132
1133out:
1134        dev_kfree_skb(skb);
1135        return ret;
1136}
1137
1138int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1139                               u8 role_id, u8 band,
1140                               const u8 *ssid, size_t ssid_len,
1141                               const u8 *ie0, size_t ie0_len, const u8 *ie1,
1142                               size_t ie1_len, bool sched_scan)
1143{
1144        struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1145        struct sk_buff *skb;
1146        int ret;
1147        u32 rate;
1148        u16 template_id_2_4 = wl->scan_templ_id_2_4;
1149        u16 template_id_5 = wl->scan_templ_id_5;
1150
1151        wl1271_debug(DEBUG_SCAN, "build probe request band %d", band);
1152
1153        skb = ieee80211_probereq_get(wl->hw, vif->addr, ssid, ssid_len,
1154                                     ie0_len + ie1_len);
1155        if (!skb) {
1156                ret = -ENOMEM;
1157                goto out;
1158        }
1159        if (ie0_len)
1160                skb_put_data(skb, ie0, ie0_len);
1161        if (ie1_len)
1162                skb_put_data(skb, ie1, ie1_len);
1163
1164        if (sched_scan &&
1165            (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) {
1166                template_id_2_4 = wl->sched_scan_templ_id_2_4;
1167                template_id_5 = wl->sched_scan_templ_id_5;
1168        }
1169
1170        rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
1171        if (band == NL80211_BAND_2GHZ)
1172                ret = wl1271_cmd_template_set(wl, role_id,
1173                                              template_id_2_4,
1174                                              skb->data, skb->len, 0, rate);
1175        else
1176                ret = wl1271_cmd_template_set(wl, role_id,
1177                                              template_id_5,
1178                                              skb->data, skb->len, 0, rate);
1179
1180out:
1181        dev_kfree_skb(skb);
1182        return ret;
1183}
1184EXPORT_SYMBOL_GPL(wl12xx_cmd_build_probe_req);
1185
1186struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,
1187                                              struct wl12xx_vif *wlvif,
1188                                              struct sk_buff *skb)
1189{
1190        struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1191        int ret;
1192        u32 rate;
1193
1194        if (!skb)
1195                skb = ieee80211_ap_probereq_get(wl->hw, vif);
1196        if (!skb)
1197                goto out;
1198
1199        wl1271_debug(DEBUG_SCAN, "set ap probe request template");
1200
1201        rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]);
1202        if (wlvif->band == NL80211_BAND_2GHZ)
1203                ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1204                                              CMD_TEMPL_CFG_PROBE_REQ_2_4,
1205                                              skb->data, skb->len, 0, rate);
1206        else
1207                ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1208                                              CMD_TEMPL_CFG_PROBE_REQ_5,
1209                                              skb->data, skb->len, 0, rate);
1210
1211        if (ret < 0)
1212                wl1271_error("Unable to set ap probe request template.");
1213
1214out:
1215        return skb;
1216}
1217
1218int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1219{
1220        int ret, extra = 0;
1221        u16 fc;
1222        struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1223        struct sk_buff *skb;
1224        struct wl12xx_arp_rsp_template *tmpl;
1225        struct ieee80211_hdr_3addr *hdr;
1226        struct arphdr *arp_hdr;
1227
1228        skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) +
1229                            WL1271_EXTRA_SPACE_MAX);
1230        if (!skb) {
1231                wl1271_error("failed to allocate buffer for arp rsp template");
1232                return -ENOMEM;
1233        }
1234
1235        skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX);
1236
1237        tmpl = skb_put_zero(skb, sizeof(*tmpl));
1238
1239        /* llc layer */
1240        memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header));
1241        tmpl->llc_type = cpu_to_be16(ETH_P_ARP);
1242
1243        /* arp header */
1244        arp_hdr = &tmpl->arp_hdr;
1245        arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);
1246        arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);
1247        arp_hdr->ar_hln = ETH_ALEN;
1248        arp_hdr->ar_pln = 4;
1249        arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);
1250
1251        /* arp payload */
1252        memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN);
1253        tmpl->sender_ip = wlvif->ip_addr;
1254
1255        /* encryption space */
1256        switch (wlvif->encryption_type) {
1257        case KEY_TKIP:
1258                if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
1259                        extra = WL1271_EXTRA_SPACE_TKIP;
1260                break;
1261        case KEY_AES:
1262                extra = WL1271_EXTRA_SPACE_AES;
1263                break;
1264        case KEY_NONE:
1265        case KEY_WEP:
1266        case KEY_GEM:
1267                extra = 0;
1268                break;
1269        default:
1270                wl1271_warning("Unknown encryption type: %d",
1271                               wlvif->encryption_type);
1272                ret = -EINVAL;
1273                goto out;
1274        }
1275
1276        if (extra) {
1277                u8 *space = skb_push(skb, extra);
1278                memset(space, 0, extra);
1279        }
1280
1281        /* QoS header - BE */
1282        if (wlvif->sta.qos)
1283                memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16));
1284
1285        /* mac80211 header */
1286        hdr = skb_push(skb, sizeof(*hdr));
1287        memset(hdr, 0, sizeof(*hdr));
1288        fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS;
1289        if (wlvif->sta.qos)
1290                fc |= IEEE80211_STYPE_QOS_DATA;
1291        else
1292                fc |= IEEE80211_STYPE_DATA;
1293        if (wlvif->encryption_type != KEY_NONE)
1294                fc |= IEEE80211_FCTL_PROTECTED;
1295
1296        hdr->frame_control = cpu_to_le16(fc);
1297        memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN);
1298        memcpy(hdr->addr2, vif->addr, ETH_ALEN);
1299        eth_broadcast_addr(hdr->addr3);
1300
1301        ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP,
1302                                      skb->data, skb->len, 0,
1303                                      wlvif->basic_rate);
1304out:
1305        dev_kfree_skb(skb);
1306        return ret;
1307}
1308
1309int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif)
1310{
1311        struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
1312        struct ieee80211_qos_hdr template;
1313
1314        memset(&template, 0, sizeof(template));
1315
1316        memcpy(template.addr1, vif->bss_conf.bssid, ETH_ALEN);
1317        memcpy(template.addr2, vif->addr, ETH_ALEN);
1318        memcpy(template.addr3, vif->bss_conf.bssid, ETH_ALEN);
1319
1320        template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1321                                             IEEE80211_STYPE_QOS_NULLFUNC |
1322                                             IEEE80211_FCTL_TODS);
1323
1324        /* FIXME: not sure what priority to use here */
1325        template.qos_ctrl = cpu_to_le16(0);
1326
1327        return wl1271_cmd_template_set(wl, wlvif->role_id,
1328                                       CMD_TEMPL_QOS_NULL_DATA, &template,
1329                                       sizeof(template), 0,
1330                                       wlvif->basic_rate);
1331}
1332
1333int wl12xx_cmd_set_default_wep_key(struct wl1271 *wl, u8 id, u8 hlid)
1334{
1335        struct wl1271_cmd_set_keys *cmd;
1336        int ret = 0;
1337
1338        wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
1339
1340        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1341        if (!cmd) {
1342                ret = -ENOMEM;
1343                goto out;
1344        }
1345
1346        cmd->hlid = hlid;
1347        cmd->key_id = id;
1348        cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1349        cmd->key_action = cpu_to_le16(KEY_SET_ID);
1350        cmd->key_type = KEY_WEP;
1351
1352        ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1353        if (ret < 0) {
1354                wl1271_warning("cmd set_default_wep_key failed: %d", ret);
1355                goto out;
1356        }
1357
1358out:
1359        kfree(cmd);
1360
1361        return ret;
1362}
1363
1364int wl1271_cmd_set_sta_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1365                       u16 action, u8 id, u8 key_type,
1366                       u8 key_size, const u8 *key, const u8 *addr,
1367                       u32 tx_seq_32, u16 tx_seq_16)
1368{
1369        struct wl1271_cmd_set_keys *cmd;
1370        int ret = 0;
1371
1372        /* hlid might have already been deleted */
1373        if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
1374                return 0;
1375
1376        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1377        if (!cmd) {
1378                ret = -ENOMEM;
1379                goto out;
1380        }
1381
1382        cmd->hlid = wlvif->sta.hlid;
1383
1384        if (key_type == KEY_WEP)
1385                cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1386        else if (is_broadcast_ether_addr(addr))
1387                cmd->lid_key_type = BROADCAST_LID_TYPE;
1388        else
1389                cmd->lid_key_type = UNICAST_LID_TYPE;
1390
1391        cmd->key_action = cpu_to_le16(action);
1392        cmd->key_size = key_size;
1393        cmd->key_type = key_type;
1394
1395        cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1396        cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1397
1398        cmd->key_id = id;
1399
1400        if (key_type == KEY_TKIP) {
1401                /*
1402                 * We get the key in the following form:
1403                 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1404                 * but the target is expecting:
1405                 * TKIP - RX MIC - TX MIC
1406                 */
1407                memcpy(cmd->key, key, 16);
1408                memcpy(cmd->key + 16, key + 24, 8);
1409                memcpy(cmd->key + 24, key + 16, 8);
1410
1411        } else {
1412                memcpy(cmd->key, key, key_size);
1413        }
1414
1415        wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1416
1417        ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1418        if (ret < 0) {
1419                wl1271_warning("could not set keys");
1420        goto out;
1421        }
1422
1423out:
1424        kfree(cmd);
1425
1426        return ret;
1427}
1428
1429/*
1430 * TODO: merge with sta/ibss into 1 set_key function.
1431 * note there are slight diffs
1432 */
1433int wl1271_cmd_set_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1434                          u16 action, u8 id, u8 key_type,
1435                          u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
1436                          u16 tx_seq_16)
1437{
1438        struct wl1271_cmd_set_keys *cmd;
1439        int ret = 0;
1440        u8 lid_type;
1441
1442        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1443        if (!cmd)
1444                return -ENOMEM;
1445
1446        if (hlid == wlvif->ap.bcast_hlid) {
1447                if (key_type == KEY_WEP)
1448                        lid_type = WEP_DEFAULT_LID_TYPE;
1449                else
1450                        lid_type = BROADCAST_LID_TYPE;
1451        } else {
1452                lid_type = UNICAST_LID_TYPE;
1453        }
1454
1455        wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d"
1456                     " hlid: %d", (int)action, (int)id, (int)lid_type,
1457                     (int)key_type, (int)hlid);
1458
1459        cmd->lid_key_type = lid_type;
1460        cmd->hlid = hlid;
1461        cmd->key_action = cpu_to_le16(action);
1462        cmd->key_size = key_size;
1463        cmd->key_type = key_type;
1464        cmd->key_id = id;
1465        cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1466        cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1467
1468        if (key_type == KEY_TKIP) {
1469                /*
1470                 * We get the key in the following form:
1471                 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1472                 * but the target is expecting:
1473                 * TKIP - RX MIC - TX MIC
1474                 */
1475                memcpy(cmd->key, key, 16);
1476                memcpy(cmd->key + 16, key + 24, 8);
1477                memcpy(cmd->key + 24, key + 16, 8);
1478        } else {
1479                memcpy(cmd->key, key, key_size);
1480        }
1481
1482        wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd));
1483
1484        ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1485        if (ret < 0) {
1486                wl1271_warning("could not set ap keys");
1487                goto out;
1488        }
1489
1490out:
1491        kfree(cmd);
1492        return ret;
1493}
1494
1495int wl12xx_cmd_set_peer_state(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1496                              u8 hlid)
1497{
1498        struct wl12xx_cmd_set_peer_state *cmd;
1499        int ret = 0;
1500
1501        wl1271_debug(DEBUG_CMD, "cmd set peer state (hlid=%d)", hlid);
1502
1503        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1504        if (!cmd) {
1505                ret = -ENOMEM;
1506                goto out;
1507        }
1508
1509        cmd->hlid = hlid;
1510        cmd->state = WL1271_CMD_STA_STATE_CONNECTED;
1511
1512        /* wmm param is valid only for station role */
1513        if (wlvif->bss_type == BSS_TYPE_STA_BSS)
1514                cmd->wmm = wlvif->wmm_enabled;
1515
1516        ret = wl1271_cmd_send(wl, CMD_SET_PEER_STATE, cmd, sizeof(*cmd), 0);
1517        if (ret < 0) {
1518                wl1271_error("failed to send set peer state command");
1519                goto out_free;
1520        }
1521
1522out_free:
1523        kfree(cmd);
1524
1525out:
1526        return ret;
1527}
1528
1529int wl12xx_cmd_add_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1530                        struct ieee80211_sta *sta, u8 hlid)
1531{
1532        struct wl12xx_cmd_add_peer *cmd;
1533        int i, ret;
1534        u32 sta_rates;
1535
1536        wl1271_debug(DEBUG_CMD, "cmd add peer %d", (int)hlid);
1537
1538        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1539        if (!cmd) {
1540                ret = -ENOMEM;
1541                goto out;
1542        }
1543
1544        memcpy(cmd->addr, sta->addr, ETH_ALEN);
1545        cmd->bss_index = WL1271_AP_BSS_INDEX;
1546        cmd->aid = sta->aid;
1547        cmd->hlid = hlid;
1548        cmd->sp_len = sta->max_sp;
1549        cmd->wmm = sta->wme ? 1 : 0;
1550        cmd->session_id = wl->session_ids[hlid];
1551        cmd->role_id = wlvif->role_id;
1552
1553        for (i = 0; i < NUM_ACCESS_CATEGORIES_COPY; i++)
1554                if (sta->wme && (sta->uapsd_queues & BIT(i)))
1555                        cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1556                                        WL1271_PSD_UPSD_TRIGGER;
1557                else
1558                        cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1559                                        WL1271_PSD_LEGACY;
1560
1561
1562        sta_rates = sta->supp_rates[wlvif->band];
1563        if (sta->ht_cap.ht_supported)
1564                sta_rates |=
1565                        (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET) |
1566                        (sta->ht_cap.mcs.rx_mask[1] << HW_MIMO_RATES_OFFSET);
1567
1568        cmd->supported_rates =
1569                cpu_to_le32(wl1271_tx_enabled_rates_get(wl, sta_rates,
1570                                                        wlvif->band));
1571
1572        if (!cmd->supported_rates) {
1573                wl1271_debug(DEBUG_CMD,
1574                             "peer has no supported rates yet, configuring basic rates: 0x%x",
1575                             wlvif->basic_rate_set);
1576                cmd->supported_rates = cpu_to_le32(wlvif->basic_rate_set);
1577        }
1578
1579        wl1271_debug(DEBUG_CMD, "new peer rates=0x%x queues=0x%x",
1580                     cmd->supported_rates, sta->uapsd_queues);
1581
1582        ret = wl1271_cmd_send(wl, CMD_ADD_PEER, cmd, sizeof(*cmd), 0);
1583        if (ret < 0) {
1584                wl1271_error("failed to initiate cmd add peer");
1585                goto out_free;
1586        }
1587
1588out_free:
1589        kfree(cmd);
1590
1591out:
1592        return ret;
1593}
1594
1595int wl12xx_cmd_remove_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1596                           u8 hlid)
1597{
1598        struct wl12xx_cmd_remove_peer *cmd;
1599        int ret;
1600        bool timeout = false;
1601
1602        wl1271_debug(DEBUG_CMD, "cmd remove peer %d", (int)hlid);
1603
1604        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1605        if (!cmd) {
1606                ret = -ENOMEM;
1607                goto out;
1608        }
1609
1610        cmd->hlid = hlid;
1611        /* We never send a deauth, mac80211 is in charge of this */
1612        cmd->reason_opcode = 0;
1613        cmd->send_deauth_flag = 0;
1614        cmd->role_id = wlvif->role_id;
1615
1616        ret = wl1271_cmd_send(wl, CMD_REMOVE_PEER, cmd, sizeof(*cmd), 0);
1617        if (ret < 0) {
1618                wl1271_error("failed to initiate cmd remove peer");
1619                goto out_free;
1620        }
1621
1622        ret = wl->ops->wait_for_event(wl,
1623                                      WLCORE_EVENT_PEER_REMOVE_COMPLETE,
1624                                      &timeout);
1625
1626        /*
1627         * We are ok with a timeout here. The event is sometimes not sent
1628         * due to a firmware bug. In case of another error (like SDIO timeout)
1629         * queue a recovery.
1630         */
1631        if (ret)
1632                wl12xx_queue_recovery_work(wl);
1633
1634out_free:
1635        kfree(cmd);
1636
1637out:
1638        return ret;
1639}
1640
1641static int wlcore_get_reg_conf_ch_idx(enum nl80211_band band, u16 ch)
1642{
1643        /*
1644         * map the given band/channel to the respective predefined
1645         * bit expected by the fw
1646         */
1647        switch (band) {
1648        case NL80211_BAND_2GHZ:
1649                /* channels 1..14 are mapped to 0..13 */
1650                if (ch >= 1 && ch <= 14)
1651                        return ch - 1;
1652                break;
1653        case NL80211_BAND_5GHZ:
1654                switch (ch) {
1655                case 8 ... 16:
1656                        /* channels 8,12,16 are mapped to 18,19,20 */
1657                        return 18 + (ch-8)/4;
1658                case 34 ... 48:
1659                        /* channels 34,36..48 are mapped to 21..28 */
1660                        return 21 + (ch-34)/2;
1661                case 52 ... 64:
1662                        /* channels 52,56..64 are mapped to 29..32 */
1663                        return 29 + (ch-52)/4;
1664                case 100 ... 140:
1665                        /* channels 100,104..140 are mapped to 33..43 */
1666                        return 33 + (ch-100)/4;
1667                case 149 ... 165:
1668                        /* channels 149,153..165 are mapped to 44..48 */
1669                        return 44 + (ch-149)/4;
1670                default:
1671                        break;
1672                }
1673                break;
1674        default:
1675                break;
1676        }
1677
1678        wl1271_error("%s: unknown band/channel: %d/%d", __func__, band, ch);
1679        return -1;
1680}
1681
1682void wlcore_set_pending_regdomain_ch(struct wl1271 *wl, u16 channel,
1683                                     enum nl80211_band band)
1684{
1685        int ch_bit_idx = 0;
1686
1687        if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1688                return;
1689
1690        ch_bit_idx = wlcore_get_reg_conf_ch_idx(band, channel);
1691
1692        if (ch_bit_idx >= 0 && ch_bit_idx <= WL1271_MAX_CHANNELS)
1693                __set_bit_le(ch_bit_idx, (long *)wl->reg_ch_conf_pending);
1694}
1695
1696int wlcore_cmd_regdomain_config_locked(struct wl1271 *wl)
1697{
1698        struct wl12xx_cmd_regdomain_dfs_config *cmd = NULL;
1699        int ret = 0, i, b, ch_bit_idx;
1700        __le32 tmp_ch_bitmap[2] __aligned(sizeof(unsigned long));
1701        struct wiphy *wiphy = wl->hw->wiphy;
1702        struct ieee80211_supported_band *band;
1703        bool timeout = false;
1704
1705        if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1706                return 0;
1707
1708        wl1271_debug(DEBUG_CMD, "cmd reg domain config");
1709
1710        memcpy(tmp_ch_bitmap, wl->reg_ch_conf_pending, sizeof(tmp_ch_bitmap));
1711
1712        for (b = NL80211_BAND_2GHZ; b <= NL80211_BAND_5GHZ; b++) {
1713                band = wiphy->bands[b];
1714                for (i = 0; i < band->n_channels; i++) {
1715                        struct ieee80211_channel *channel = &band->channels[i];
1716                        u16 ch = channel->hw_value;
1717                        u32 flags = channel->flags;
1718
1719                        if (flags & (IEEE80211_CHAN_DISABLED |
1720                                     IEEE80211_CHAN_NO_IR))
1721                                continue;
1722
1723                        if ((flags & IEEE80211_CHAN_RADAR) &&
1724                            channel->dfs_state != NL80211_DFS_AVAILABLE)
1725                                continue;
1726
1727                        ch_bit_idx = wlcore_get_reg_conf_ch_idx(b, ch);
1728                        if (ch_bit_idx < 0)
1729                                continue;
1730
1731                        __set_bit_le(ch_bit_idx, (long *)tmp_ch_bitmap);
1732                }
1733        }
1734
1735        if (!memcmp(tmp_ch_bitmap, wl->reg_ch_conf_last, sizeof(tmp_ch_bitmap)))
1736                goto out;
1737
1738        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1739        if (!cmd) {
1740                ret = -ENOMEM;
1741                goto out;
1742        }
1743
1744        cmd->ch_bit_map1 = tmp_ch_bitmap[0];
1745        cmd->ch_bit_map2 = tmp_ch_bitmap[1];
1746        cmd->dfs_region = wl->dfs_region;
1747
1748        wl1271_debug(DEBUG_CMD,
1749                     "cmd reg domain bitmap1: 0x%08x, bitmap2: 0x%08x",
1750                     cmd->ch_bit_map1, cmd->ch_bit_map2);
1751
1752        ret = wl1271_cmd_send(wl, CMD_DFS_CHANNEL_CONFIG, cmd, sizeof(*cmd), 0);
1753        if (ret < 0) {
1754                wl1271_error("failed to send reg domain dfs config");
1755                goto out;
1756        }
1757
1758        ret = wl->ops->wait_for_event(wl,
1759                                      WLCORE_EVENT_DFS_CONFIG_COMPLETE,
1760                                      &timeout);
1761        if (ret < 0 || timeout) {
1762                wl1271_error("reg domain conf %serror",
1763                             timeout ? "completion " : "");
1764                ret = timeout ? -ETIMEDOUT : ret;
1765                goto out;
1766        }
1767
1768        memcpy(wl->reg_ch_conf_last, tmp_ch_bitmap, sizeof(tmp_ch_bitmap));
1769        memset(wl->reg_ch_conf_pending, 0, sizeof(wl->reg_ch_conf_pending));
1770
1771out:
1772        kfree(cmd);
1773        return ret;
1774}
1775
1776int wl12xx_cmd_config_fwlog(struct wl1271 *wl)
1777{
1778        struct wl12xx_cmd_config_fwlog *cmd;
1779        int ret = 0;
1780
1781        wl1271_debug(DEBUG_CMD, "cmd config firmware logger");
1782
1783        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1784        if (!cmd) {
1785                ret = -ENOMEM;
1786                goto out;
1787        }
1788
1789        cmd->logger_mode = wl->conf.fwlog.mode;
1790        cmd->log_severity = wl->conf.fwlog.severity;
1791        cmd->timestamp = wl->conf.fwlog.timestamp;
1792        cmd->output = wl->conf.fwlog.output;
1793        cmd->threshold = wl->conf.fwlog.threshold;
1794
1795        ret = wl1271_cmd_send(wl, CMD_CONFIG_FWLOGGER, cmd, sizeof(*cmd), 0);
1796        if (ret < 0) {
1797                wl1271_error("failed to send config firmware logger command");
1798                goto out_free;
1799        }
1800
1801out_free:
1802        kfree(cmd);
1803
1804out:
1805        return ret;
1806}
1807
1808int wl12xx_cmd_start_fwlog(struct wl1271 *wl)
1809{
1810        struct wl12xx_cmd_start_fwlog *cmd;
1811        int ret = 0;
1812
1813        wl1271_debug(DEBUG_CMD, "cmd start firmware logger");
1814
1815        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1816        if (!cmd) {
1817                ret = -ENOMEM;
1818                goto out;
1819        }
1820
1821        ret = wl1271_cmd_send(wl, CMD_START_FWLOGGER, cmd, sizeof(*cmd), 0);
1822        if (ret < 0) {
1823                wl1271_error("failed to send start firmware logger command");
1824                goto out_free;
1825        }
1826
1827out_free:
1828        kfree(cmd);
1829
1830out:
1831        return ret;
1832}
1833
1834int wl12xx_cmd_stop_fwlog(struct wl1271 *wl)
1835{
1836        struct wl12xx_cmd_stop_fwlog *cmd;
1837        int ret = 0;
1838
1839        wl1271_debug(DEBUG_CMD, "cmd stop firmware logger");
1840
1841        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1842        if (!cmd) {
1843                ret = -ENOMEM;
1844                goto out;
1845        }
1846
1847        ret = wl1271_cmd_send(wl, CMD_STOP_FWLOGGER, cmd, sizeof(*cmd), 0);
1848        if (ret < 0) {
1849                wl1271_error("failed to send stop firmware logger command");
1850                goto out_free;
1851        }
1852
1853out_free:
1854        kfree(cmd);
1855
1856out:
1857        return ret;
1858}
1859
1860static int wl12xx_cmd_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1861                          u8 role_id, enum nl80211_band band, u8 channel)
1862{
1863        struct wl12xx_cmd_roc *cmd;
1864        int ret = 0;
1865
1866        wl1271_debug(DEBUG_CMD, "cmd roc %d (%d)", channel, role_id);
1867
1868        if (WARN_ON(role_id == WL12XX_INVALID_ROLE_ID))
1869                return -EINVAL;
1870
1871        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1872        if (!cmd) {
1873                ret = -ENOMEM;
1874                goto out;
1875        }
1876
1877        cmd->role_id = role_id;
1878        cmd->channel = channel;
1879        switch (band) {
1880        case NL80211_BAND_2GHZ:
1881                cmd->band = WLCORE_BAND_2_4GHZ;
1882                break;
1883        case NL80211_BAND_5GHZ:
1884                cmd->band = WLCORE_BAND_5GHZ;
1885                break;
1886        default:
1887                wl1271_error("roc - unknown band: %d", (int)wlvif->band);
1888                ret = -EINVAL;
1889                goto out_free;
1890        }
1891
1892
1893        ret = wl1271_cmd_send(wl, CMD_REMAIN_ON_CHANNEL, cmd, sizeof(*cmd), 0);
1894        if (ret < 0) {
1895                wl1271_error("failed to send ROC command");
1896                goto out_free;
1897        }
1898
1899out_free:
1900        kfree(cmd);
1901
1902out:
1903        return ret;
1904}
1905
1906static int wl12xx_cmd_croc(struct wl1271 *wl, u8 role_id)
1907{
1908        struct wl12xx_cmd_croc *cmd;
1909        int ret = 0;
1910
1911        wl1271_debug(DEBUG_CMD, "cmd croc (%d)", role_id);
1912
1913        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1914        if (!cmd) {
1915                ret = -ENOMEM;
1916                goto out;
1917        }
1918        cmd->role_id = role_id;
1919
1920        ret = wl1271_cmd_send(wl, CMD_CANCEL_REMAIN_ON_CHANNEL, cmd,
1921                              sizeof(*cmd), 0);
1922        if (ret < 0) {
1923                wl1271_error("failed to send ROC command");
1924                goto out_free;
1925        }
1926
1927out_free:
1928        kfree(cmd);
1929
1930out:
1931        return ret;
1932}
1933
1934int wl12xx_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 role_id,
1935               enum nl80211_band band, u8 channel)
1936{
1937        int ret = 0;
1938
1939        if (WARN_ON(test_bit(role_id, wl->roc_map)))
1940                return 0;
1941
1942        ret = wl12xx_cmd_roc(wl, wlvif, role_id, band, channel);
1943        if (ret < 0)
1944                goto out;
1945
1946        __set_bit(role_id, wl->roc_map);
1947out:
1948        return ret;
1949}
1950
1951int wl12xx_croc(struct wl1271 *wl, u8 role_id)
1952{
1953        int ret = 0;
1954
1955        if (WARN_ON(!test_bit(role_id, wl->roc_map)))
1956                return 0;
1957
1958        ret = wl12xx_cmd_croc(wl, role_id);
1959        if (ret < 0)
1960                goto out;
1961
1962        __clear_bit(role_id, wl->roc_map);
1963
1964        /*
1965         * Rearm the tx watchdog when removing the last ROC. This prevents
1966         * recoveries due to just finished ROCs - when Tx hasn't yet had
1967         * a chance to get out.
1968         */
1969        if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES)
1970                wl12xx_rearm_tx_watchdog_locked(wl);
1971out:
1972        return ret;
1973}
1974
1975int wl12xx_cmd_stop_channel_switch(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1976{
1977        struct wl12xx_cmd_stop_channel_switch *cmd;
1978        int ret;
1979
1980        wl1271_debug(DEBUG_ACX, "cmd stop channel switch");
1981
1982        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1983        if (!cmd) {
1984                ret = -ENOMEM;
1985                goto out;
1986        }
1987
1988        cmd->role_id = wlvif->role_id;
1989
1990        ret = wl1271_cmd_send(wl, CMD_STOP_CHANNEL_SWICTH, cmd, sizeof(*cmd), 0);
1991        if (ret < 0) {
1992                wl1271_error("failed to stop channel switch command");
1993                goto out_free;
1994        }
1995
1996out_free:
1997        kfree(cmd);
1998
1999out:
2000        return ret;
2001}
2002
2003/* start dev role and roc on its channel */
2004int wl12xx_start_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2005                     enum nl80211_band band, int channel)
2006{
2007        int ret;
2008
2009        if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2010                      wlvif->bss_type == BSS_TYPE_IBSS)))
2011                return -EINVAL;
2012
2013        /* the dev role is already started for p2p mgmt interfaces */
2014        if (!wlcore_is_p2p_mgmt(wlvif)) {
2015                ret = wl12xx_cmd_role_enable(wl,
2016                                             wl12xx_wlvif_to_vif(wlvif)->addr,
2017                                             WL1271_ROLE_DEVICE,
2018                                             &wlvif->dev_role_id);
2019                if (ret < 0)
2020                        goto out;
2021        }
2022
2023        ret = wl12xx_cmd_role_start_dev(wl, wlvif, band, channel);
2024        if (ret < 0)
2025                goto out_disable;
2026
2027        ret = wl12xx_roc(wl, wlvif, wlvif->dev_role_id, band, channel);
2028        if (ret < 0)
2029                goto out_stop;
2030
2031        return 0;
2032
2033out_stop:
2034        wl12xx_cmd_role_stop_dev(wl, wlvif);
2035out_disable:
2036        if (!wlcore_is_p2p_mgmt(wlvif))
2037                wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2038out:
2039        return ret;
2040}
2041
2042/* croc dev hlid, and stop the role */
2043int wl12xx_stop_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2044{
2045        int ret;
2046
2047        if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2048                      wlvif->bss_type == BSS_TYPE_IBSS)))
2049                return -EINVAL;
2050
2051        /* flush all pending packets */
2052        ret = wlcore_tx_work_locked(wl);
2053        if (ret < 0)
2054                goto out;
2055
2056        if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
2057                ret = wl12xx_croc(wl, wlvif->dev_role_id);
2058                if (ret < 0)
2059                        goto out;
2060        }
2061
2062        ret = wl12xx_cmd_role_stop_dev(wl, wlvif);
2063        if (ret < 0)
2064                goto out;
2065
2066        if (!wlcore_is_p2p_mgmt(wlvif)) {
2067                ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2068                if (ret < 0)
2069                        goto out;
2070        }
2071
2072out:
2073        return ret;
2074}
2075
2076int wlcore_cmd_generic_cfg(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2077                           u8 feature, u8 enable, u8 value)
2078{
2079        struct wlcore_cmd_generic_cfg *cmd;
2080        int ret;
2081
2082        wl1271_debug(DEBUG_CMD,
2083                     "cmd generic cfg (role %d feature %d enable %d value %d)",
2084                     wlvif->role_id, feature, enable, value);
2085
2086        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2087        if (!cmd)
2088                return -ENOMEM;
2089
2090        cmd->role_id = wlvif->role_id;
2091        cmd->feature = feature;
2092        cmd->enable = enable;
2093        cmd->value = value;
2094
2095        ret = wl1271_cmd_send(wl, CMD_GENERIC_CFG, cmd, sizeof(*cmd), 0);
2096        if (ret < 0) {
2097                wl1271_error("failed to send generic cfg command");
2098                goto out_free;
2099        }
2100out_free:
2101        kfree(cmd);
2102        return ret;
2103}
2104EXPORT_SYMBOL_GPL(wlcore_cmd_generic_cfg);
2105