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 <[email protected]>
   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 the last sec_pn16 value from the current FW status. On recovery,
 337          * we might not have fw_status yet, and tx_lnk_sec_pn16[] will be NULL.
 338          */
 339         if (wl->fw_status->counters.tx_lnk_sec_pn16)
 340                 wl->links[link].prev_sec_pn16 =
 341                         le16_to_cpu(wl->fw_status->counters.tx_lnk_sec_pn16[link]);
 342
 343         /*
 344          * Take saved value for total freed packets from wlvif, in case this is
 345          * recovery/resume
 346          */
 347         if (wlvif->bss_type != BSS_TYPE_AP_BSS)
 348                 wl->links[link].total_freed_pkts = wlvif->total_freed_pkts;
 349
 350         *hlid = link;
 351
 352         wl->active_link_count++;
 353         return 0;
 354 }
 355
 356 void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 357 {
 358         unsigned long flags;
 359
 360         if (*hlid == WL12XX_INVALID_LINK_ID)
 361                 return;
 362
 363         /* these bits are used by op_tx */
 364         spin_lock_irqsave(&wl->wl_lock, flags);
 365         __clear_bit(*hlid, wl->links_map);
 366         __clear_bit(*hlid, wlvif->links_map);
 367         spin_unlock_irqrestore(&wl->wl_lock, flags);
 368
 369         wl->links[*hlid].allocated_pkts = 0;
 370         wl->links[*hlid].prev_freed_pkts = 0;
 371         wl->links[*hlid].prev_sec_pn16 = 0;
 372         wl->links[*hlid].ba_bitmap = 0;
 373         eth_zero_addr(wl->links[*hlid].addr);
 374
 375         /*
 376          * At this point op_tx() will not add more packets to the queues. We
 377          * can purge them.
 378          */
 379         wl1271_tx_reset_link_queues(wl, *hlid);
 380         wl->links[*hlid].wlvif = NULL;
 381
 382         if (wlvif->bss_type == BSS_TYPE_AP_BSS &&
 383             *hlid == wlvif->ap.bcast_hlid) {
 384                 u32 sqn_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING;
 385                 /*
 386                  * save the total freed packets in the wlvif, in case this is
 387                  * recovery or suspend
 388                  */
 389                 wlvif->total_freed_pkts = wl->links[*hlid].total_freed_pkts;
 390
 391                 /*
 392                  * increment the initial seq number on recovery to account for
 393                  * transmitted packets that we haven't yet got in the FW status
 394                  */
 395                 if (wlvif->encryption_type == KEY_GEM)
 396                         sqn_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING_GEM;
 397
 398                 if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
 399                         wlvif->total_freed_pkts += sqn_padding;
 400         }
 401
 402         wl->links[*hlid].total_freed_pkts = 0;
 403
 404         *hlid = WL12XX_INVALID_LINK_ID;
 405         wl->active_link_count--;
 406         WARN_ON_ONCE(wl->active_link_count < 0);
 407 }
 408
 409 u8 wlcore_get_native_channel_type(u8 nl_channel_type)
 410 {
 411         switch (nl_channel_type) {
 412         case NL80211_CHAN_NO_HT:
 413                 return WLCORE_CHAN_NO_HT;
 414         case NL80211_CHAN_HT20:
 415                 return WLCORE_CHAN_HT20;
 416         case NL80211_CHAN_HT40MINUS:
 417                 return WLCORE_CHAN_HT40MINUS;
 418         case NL80211_CHAN_HT40PLUS:
 419                 return WLCORE_CHAN_HT40PLUS;
 420         default:
 421                 WARN_ON(1);
 422                 return WLCORE_CHAN_NO_HT;
 423         }
 424 }
 425 EXPORT_SYMBOL_GPL(wlcore_get_native_channel_type);
 426
 427 static int wl12xx_cmd_role_start_dev(struct wl1271 *wl,
 428                                      struct wl12xx_vif *wlvif,
 429                                      enum nl80211_band band,
 430                                      int channel)
 431 {
 432         struct wl12xx_cmd_role_start *cmd;
 433         int ret;
 434
 435         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 436         if (!cmd) {
 437                 ret = -ENOMEM;
 438                 goto out;
 439         }
 440
 441         wl1271_debug(DEBUG_CMD, "cmd role start dev %d", wlvif->dev_role_id);
 442
 443         cmd->role_id = wlvif->dev_role_id;
 444         if (band == NL80211_BAND_5GHZ)
 445                 cmd->band = WLCORE_BAND_5GHZ;
 446         cmd->channel = channel;
 447
 448         if (wlvif->dev_hlid == WL12XX_INVALID_LINK_ID) {
 449                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->dev_hlid);
 450                 if (ret)
 451                         goto out_free;
 452         }
 453         cmd->device.hlid = wlvif->dev_hlid;
 454         cmd->device.session = wl->session_ids[wlvif->dev_hlid];
 455
 456         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d",
 457                      cmd->role_id, cmd->device.hlid, cmd->device.session);
 458
 459         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 460         if (ret < 0) {
 461                 wl1271_error("failed to initiate cmd role enable");
 462                 goto err_hlid;
 463         }
 464
 465         goto out_free;
 466
 467 err_hlid:
 468         /* clear links on error */
 469         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 470
 471 out_free:
 472         kfree(cmd);
 473
 474 out:
 475         return ret;
 476 }
 477
 478 static int wl12xx_cmd_role_stop_dev(struct wl1271 *wl,
 479                                     struct wl12xx_vif *wlvif)
 480 {
 481         struct wl12xx_cmd_role_stop *cmd;
 482         int ret;
 483
 484         if (WARN_ON(wlvif->dev_hlid == WL12XX_INVALID_LINK_ID))
 485                 return -EINVAL;
 486
 487         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 488         if (!cmd) {
 489                 ret = -ENOMEM;
 490                 goto out;
 491         }
 492
 493         wl1271_debug(DEBUG_CMD, "cmd role stop dev");
 494
 495         cmd->role_id = wlvif->dev_role_id;
 496         cmd->disc_type = DISCONNECT_IMMEDIATE;
 497         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 498
 499         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 500         if (ret < 0) {
 501                 wl1271_error("failed to initiate cmd role stop");
 502                 goto out_free;
 503         }
 504
 505         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 506
 507 out_free:
 508         kfree(cmd);
 509
 510 out:
 511         return ret;
 512 }
 513
 514 int wl12xx_cmd_role_start_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 515 {
 516         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 517         struct wl12xx_cmd_role_start *cmd;
 518         u32 supported_rates;
 519         int ret;
 520
 521         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 522         if (!cmd) {
 523                 ret = -ENOMEM;
 524                 goto out;
 525         }
 526
 527         wl1271_debug(DEBUG_CMD, "cmd role start sta %d", wlvif->role_id);
 528
 529         cmd->role_id = wlvif->role_id;
 530         if (wlvif->band == NL80211_BAND_5GHZ)
 531                 cmd->band = WLCORE_BAND_5GHZ;
 532         cmd->channel = wlvif->channel;
 533         cmd->sta.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 534         cmd->sta.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 535         cmd->sta.ssid_type = WL12XX_SSID_TYPE_ANY;
 536         cmd->sta.ssid_len = wlvif->ssid_len;
 537         memcpy(cmd->sta.ssid, wlvif->ssid, wlvif->ssid_len);
 538         memcpy(cmd->sta.bssid, vif->bss_conf.bssid, ETH_ALEN);
 539
 540         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
 541                           wlcore_hw_sta_get_ap_rate_mask(wl, wlvif);
 542         if (wlvif->p2p)
 543                 supported_rates &= ~CONF_TX_CCK_RATES;
 544
 545         cmd->sta.local_rates = cpu_to_le32(supported_rates);
 546
 547         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 548
 549         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 550                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 551                 if (ret)
 552                         goto out_free;
 553         }
 554         cmd->sta.hlid = wlvif->sta.hlid;
 555         cmd->sta.session = wl->session_ids[wlvif->sta.hlid];
 556         /*
 557          * We don't have the correct remote rates in this stage.  The
 558          * rates will be reconfigured later, after association, if the
 559          * firmware supports ACX_PEER_CAP.  Otherwise, there's nothing
 560          * we can do, so use all supported_rates here.
 561          */
 562         cmd->sta.remote_rates = cpu_to_le32(supported_rates);
 563
 564         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 565                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 566                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 567                      wlvif->basic_rate_set, wlvif->rate_set);
 568
 569         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 570         if (ret < 0) {
 571                 wl1271_error("failed to initiate cmd role start sta");
 572                 goto err_hlid;
 573         }
 574
 575         wlvif->sta.role_chan_type = wlvif->channel_type;
 576         goto out_free;
 577
 578 err_hlid:
 579         /* clear links on error. */
 580         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 581
 582 out_free:
 583         kfree(cmd);
 584
 585 out:
 586         return ret;
 587 }
 588
 589 /* use this function to stop ibss as well */
 590 int wl12xx_cmd_role_stop_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 591 {
 592         struct wl12xx_cmd_role_stop *cmd;
 593         int ret;
 594
 595         if (WARN_ON(wlvif->sta.hlid == WL12XX_INVALID_LINK_ID))
 596                 return -EINVAL;
 597
 598         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 599         if (!cmd) {
 600                 ret = -ENOMEM;
 601                 goto out;
 602         }
 603
 604         wl1271_debug(DEBUG_CMD, "cmd role stop sta %d", wlvif->role_id);
 605
 606         cmd->role_id = wlvif->role_id;
 607         cmd->disc_type = DISCONNECT_IMMEDIATE;
 608         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 609
 610         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 611         if (ret < 0) {
 612                 wl1271_error("failed to initiate cmd role stop sta");
 613                 goto out_free;
 614         }
 615
 616         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 617
 618 out_free:
 619         kfree(cmd);
 620
 621 out:
 622         return ret;
 623 }
 624
 625 int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 626 {
 627         struct wl12xx_cmd_role_start *cmd;
 628         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 629         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 630         u32 supported_rates;
 631         int ret;
 632
 633         wl1271_debug(DEBUG_CMD, "cmd role start ap %d", wlvif->role_id);
 634
 635         /* If MESH --> ssid_len is always 0 */
 636         if (!ieee80211_vif_is_mesh(vif)) {
 637                 /* trying to use hidden SSID with an old hostapd version */
 638                 if (wlvif->ssid_len == 0 && !bss_conf->hidden_ssid) {
 639                         wl1271_error("got a null SSID from beacon/bss");
 640                         ret = -EINVAL;
 641                         goto out;
 642                 }
 643         }
 644
 645         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 646         if (!cmd) {
 647                 ret = -ENOMEM;
 648                 goto out;
 649         }
 650
 651         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.global_hlid);
 652         if (ret < 0)
 653                 goto out_free;
 654
 655         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 656         if (ret < 0)
 657                 goto out_free_global;
 658
 659         /* use the previous security seq, if this is a recovery/resume */
 660         wl->links[wlvif->ap.bcast_hlid].total_freed_pkts =
 661                                                 wlvif->total_freed_pkts;
 662
 663         cmd->role_id = wlvif->role_id;
 664         cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 665         cmd->ap.bss_index = WL1271_AP_BSS_INDEX;
 666         cmd->ap.global_hlid = wlvif->ap.global_hlid;
 667         cmd->ap.broadcast_hlid = wlvif->ap.bcast_hlid;
 668         cmd->ap.global_session_id = wl->session_ids[wlvif->ap.global_hlid];
 669         cmd->ap.bcast_session_id = wl->session_ids[wlvif->ap.bcast_hlid];
 670         cmd->ap.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 671         cmd->ap.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 672         cmd->ap.dtim_interval = bss_conf->dtim_period;
 673         cmd->ap.beacon_expiry = WL1271_AP_DEF_BEACON_EXP;
 674         /* FIXME: Change when adding DFS */
 675         cmd->ap.reset_tsf = 1;  /* By default reset AP TSF */
 676         cmd->ap.wmm = wlvif->wmm_enabled;
 677         cmd->channel = wlvif->channel;
 678         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 679
 680         if (!bss_conf->hidden_ssid) {
 681                 /* take the SSID from the beacon for backward compatibility */
 682                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_PUBLIC;
 683                 cmd->ap.ssid_len = wlvif->ssid_len;
 684                 memcpy(cmd->ap.ssid, wlvif->ssid, wlvif->ssid_len);
 685         } else {
 686                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_HIDDEN;
 687                 cmd->ap.ssid_len = vif->cfg.ssid_len;
 688                 memcpy(cmd->ap.ssid, vif->cfg.ssid, vif->cfg.ssid_len);
 689         }
 690
 691         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
 692                 wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif);
 693         if (wlvif->p2p)
 694                 supported_rates &= ~CONF_TX_CCK_RATES;
 695
 696         wl1271_debug(DEBUG_CMD, "cmd role start ap with supported_rates 0x%08x",
 697                      supported_rates);
 698
 699         cmd->ap.local_rates = cpu_to_le32(supported_rates);
 700
 701         switch (wlvif->band) {
 702         case NL80211_BAND_2GHZ:
 703                 cmd->band = WLCORE_BAND_2_4GHZ;
 704                 break;
 705         case NL80211_BAND_5GHZ:
 706                 cmd->band = WLCORE_BAND_5GHZ;
 707                 break;
 708         default:
 709                 wl1271_warning("ap start - unknown band: %d", (int)wlvif->band);
 710                 cmd->band = WLCORE_BAND_2_4GHZ;
 711                 break;
 712         }
 713
 714         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 715         if (ret < 0) {
 716                 wl1271_error("failed to initiate cmd role start ap");
 717                 goto out_free_bcast;
 718         }
 719
 720         goto out_free;
 721
 722 out_free_bcast:
 723         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 724
 725 out_free_global:
 726         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 727
 728 out_free:
 729         kfree(cmd);
 730
 731 out:
 732         return ret;
 733 }
 734
 735 int wl12xx_cmd_role_stop_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 736 {
 737         struct wl12xx_cmd_role_stop *cmd;
 738         int ret;
 739
 740         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 741         if (!cmd) {
 742                 ret = -ENOMEM;
 743                 goto out;
 744         }
 745
 746         wl1271_debug(DEBUG_CMD, "cmd role stop ap %d", wlvif->role_id);
 747
 748         cmd->role_id = wlvif->role_id;
 749
 750         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 751         if (ret < 0) {
 752                 wl1271_error("failed to initiate cmd role stop ap");
 753                 goto out_free;
 754         }
 755
 756         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 757         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 758
 759 out_free:
 760         kfree(cmd);
 761
 762 out:
 763         return ret;
 764 }
 765
 766 int wl12xx_cmd_role_start_ibss(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 767 {
 768         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 769         struct wl12xx_cmd_role_start *cmd;
 770         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 771         int ret;
 772
 773         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 774         if (!cmd) {
 775                 ret = -ENOMEM;
 776                 goto out;
 777         }
 778
 779         wl1271_debug(DEBUG_CMD, "cmd role start ibss %d", wlvif->role_id);
 780
 781         cmd->role_id = wlvif->role_id;
 782         if (wlvif->band == NL80211_BAND_5GHZ)
 783                 cmd->band = WLCORE_BAND_5GHZ;
 784         cmd->channel = wlvif->channel;
 785         cmd->ibss.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 786         cmd->ibss.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 787         cmd->ibss.dtim_interval = bss_conf->dtim_period;
 788         cmd->ibss.ssid_type = WL12XX_SSID_TYPE_ANY;
 789         cmd->ibss.ssid_len = wlvif->ssid_len;
 790         memcpy(cmd->ibss.ssid, wlvif->ssid, wlvif->ssid_len);
 791         memcpy(cmd->ibss.bssid, vif->bss_conf.bssid, ETH_ALEN);
 792         cmd->sta.local_rates = cpu_to_le32(wlvif->rate_set);
 793
 794         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 795                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 796                 if (ret)
 797                         goto out_free;
 798         }
 799         cmd->ibss.hlid = wlvif->sta.hlid;
 800         cmd->ibss.remote_rates = cpu_to_le32(wlvif->rate_set);
 801
 802         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 803                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 804                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 805                      wlvif->basic_rate_set, wlvif->rate_set);
 806
 807         wl1271_debug(DEBUG_CMD, "vif->bss_conf.bssid = %pM",
 808                      vif->bss_conf.bssid);
 809
 810         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 811         if (ret < 0) {
 812                 wl1271_error("failed to initiate cmd role enable");
 813                 goto err_hlid;
 814         }
 815
 816         goto out_free;
 817
 818 err_hlid:
 819         /* clear links on error. */
 820         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 821
 822 out_free:
 823         kfree(cmd);
 824
 825 out:
 826         return ret;
 827 }
 828
 829
 830 /**
 831  * wl1271_cmd_test - send test command to firmware
 832  *
 833  * @wl: wl struct
 834  * @buf: buffer containing the command, with all headers, must work with dma
 835  * @buf_len: length of the buffer
 836  * @answer: is answer needed
 837  */
 838 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 839 {
 840         int ret;
 841         size_t res_len = 0;
 842
 843         wl1271_debug(DEBUG_CMD, "cmd test");
 844
 845         if (answer)
 846                 res_len = buf_len;
 847
 848         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 849
 850         if (ret < 0) {
 851                 wl1271_warning("TEST command failed");
 852                 return ret;
 853         }
 854
 855         return ret;
 856 }
 857 EXPORT_SYMBOL_GPL(wl1271_cmd_test);
 858
 859 /**
 860  * wl1271_cmd_interrogate - read acx from firmware
 861  *
 862  * @wl: wl struct
 863  * @id: acx id
 864  * @buf: buffer for the response, including all headers, must work with dma
 865  * @cmd_len: length of command
 866  * @res_len: length of payload
 867  */
 868 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf,
 869                            size_t cmd_len, size_t res_len)
 870 {
 871         struct acx_header *acx = buf;
 872         int ret;
 873
 874         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 875
 876         acx->id = cpu_to_le16(id);
 877
 878         /* response payload length, does not include any headers */
 879         acx->len = cpu_to_le16(res_len - sizeof(*acx));
 880
 881         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, cmd_len, res_len);
 882         if (ret < 0)
 883                 wl1271_error("INTERROGATE command failed");
 884
 885         return ret;
 886 }
 887
 888 /**
 889  * wlcore_cmd_configure_failsafe - write acx value to firmware
 890  *
 891  * @wl: wl struct
 892  * @id: acx id
 893  * @buf: buffer containing acx, including all headers, must work with dma
 894  * @len: length of buf
 895  * @valid_rets: bitmap of valid cmd status codes (i.e. return values).
 896  * return the cmd status on success.
 897  */
 898 int wlcore_cmd_configure_failsafe(struct wl1271 *wl, u16 id, void *buf,
 899                                   size_t len, unsigned long valid_rets)
 900 {
 901         struct acx_header *acx = buf;
 902         int ret;
 903
 904         wl1271_debug(DEBUG_CMD, "cmd configure (%d)", id);
 905
 906         if (WARN_ON_ONCE(len < sizeof(*acx)))
 907                 return -EIO;
 908
 909         acx->id = cpu_to_le16(id);
 910
 911         /* payload length, does not include any headers */
 912         acx->len = cpu_to_le16(len - sizeof(*acx));
 913
 914         ret = wlcore_cmd_send_failsafe(wl, CMD_CONFIGURE, acx, len, 0,
 915                                        valid_rets);
 916         if (ret < 0) {
 917                 wl1271_warning("CONFIGURE command NOK");
 918                 return ret;
 919         }
 920
 921         return ret;
 922 }
 923
 924 /*
 925  * wrapper for wlcore_cmd_configure that accepts only success status.
 926  * return 0 on success
 927  */
 928 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 929 {
 930         int ret = wlcore_cmd_configure_failsafe(wl, id, buf, len, 0);
 931
 932         if (ret < 0)
 933                 return ret;
 934         return 0;
 935 }
 936 EXPORT_SYMBOL_GPL(wl1271_cmd_configure);
 937
 938 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 939 {
 940         struct cmd_enabledisable_path *cmd;
 941         int ret;
 942         u16 cmd_rx, cmd_tx;
 943
 944         wl1271_debug(DEBUG_CMD, "cmd data path");
 945
 946         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 947         if (!cmd) {
 948                 ret = -ENOMEM;
 949                 goto out;
 950         }
 951
 952         /* the channel here is only used for calibration, so hardcoded to 1 */
 953         cmd->channel = 1;
 954
 955         if (enable) {
 956                 cmd_rx = CMD_ENABLE_RX;
 957                 cmd_tx = CMD_ENABLE_TX;
 958         } else {
 959                 cmd_rx = CMD_DISABLE_RX;
 960                 cmd_tx = CMD_DISABLE_TX;
 961         }
 962
 963         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 964         if (ret < 0) {
 965                 wl1271_error("rx %s cmd for channel %d failed",
 966                              enable ? "start" : "stop", cmd->channel);
 967                 goto out;
 968         }
 969
 970         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 971                      enable ? "start" : "stop", cmd->channel);
 972
 973         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 974         if (ret < 0) {
 975                 wl1271_error("tx %s cmd for channel %d failed",
 976                              enable ? "start" : "stop", cmd->channel);
 977                 goto out;
 978         }
 979
 980         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 981                      enable ? "start" : "stop", cmd->channel);
 982
 983 out:
 984         kfree(cmd);
 985         return ret;
 986 }
 987 EXPORT_SYMBOL_GPL(wl1271_cmd_data_path);
 988
 989 int wl1271_cmd_ps_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 990                        u8 ps_mode, u16 auto_ps_timeout)
 991 {
 992         struct wl1271_cmd_ps_params *ps_params = NULL;
 993         int ret = 0;
 994
 995         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 996
 997         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 998         if (!ps_params) {
 999                 ret = -ENOMEM;
1000                 goto out;
1001         }
1002
1003         ps_params->role_id = wlvif->role_id;
1004         ps_params->ps_mode = ps_mode;
1005         ps_params->auto_ps_timeout = auto_ps_timeout;
1006
1007         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
1008                               sizeof(*ps_params), 0);
1009         if (ret < 0) {
1010                 wl1271_error("cmd set_ps_mode failed");
1011                 goto out;
1012         }
1013
1014 out:
1015         kfree(ps_params);
1016         return ret;
1017 }
1018
1019 int wl1271_cmd_template_set(struct wl1271 *wl, u8 role_id,
1020                             u16 template_id, void *buf, size_t buf_len,
1021                             int index, u32 rates)
1022 {
1023         struct wl1271_cmd_template_set *cmd;
1024         int ret = 0;
1025
1026         wl1271_debug(DEBUG_CMD, "cmd template_set %d (role %d)",
1027                      template_id, role_id);
1028
1029         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
1030         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
1031
1032         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1033         if (!cmd) {
1034                 ret = -ENOMEM;
1035                 goto out;
1036         }
1037
1038         /* during initialization wlvif is NULL */
1039         cmd->role_id = role_id;
1040         cmd->len = cpu_to_le16(buf_len);
1041         cmd->template_type = template_id;
1042         cmd->enabled_rates = cpu_to_le32(rates);
1043         cmd->short_retry_limit = wl->conf.tx.tmpl_short_retry_limit;
1044         cmd->long_retry_limit = wl->conf.tx.tmpl_long_retry_limit;
1045         cmd->index = index;
1046
1047         if (buf)
1048                 memcpy(cmd->template_data, buf, buf_len);
1049
1050         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
1051         if (ret < 0) {
1052                 wl1271_warning("cmd set_template failed: %d", ret);
1053                 goto out_free;
1054         }
1055
1056 out_free:
1057         kfree(cmd);
1058
1059 out:
1060         return ret;
1061 }
1062
1063 int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1064 {
1065         struct sk_buff *skb = NULL;
1066         int size;
1067         void *ptr;
1068         int ret = -ENOMEM;
1069
1070
1071         if (wlvif->bss_type == BSS_TYPE_IBSS) {
1072                 size = sizeof(struct wl12xx_null_data_template);
1073                 ptr = NULL;
1074         } else {
1075                 skb = ieee80211_nullfunc_get(wl->hw,
1076                                              wl12xx_wlvif_to_vif(wlvif),
1077                                              -1, false);
1078                 if (!skb)
1079                         goto out;
1080                 size = skb->len;
1081                 ptr = skb->data;
1082         }
1083
1084         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1085                                       CMD_TEMPL_NULL_DATA, ptr, size, 0,
1086                                       wlvif->basic_rate);
1087
1088 out:
1089         dev_kfree_skb(skb);
1090         if (ret)
1091                 wl1271_warning("cmd build null data failed %d", ret);
1092
1093         return ret;
1094
1095 }
1096
1097 int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,
1098                                    struct wl12xx_vif *wlvif)
1099 {
1100         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1101         struct sk_buff *skb = NULL;
1102         int ret = -ENOMEM;
1103
1104         skb = ieee80211_nullfunc_get(wl->hw, vif,-1, false);
1105         if (!skb)
1106                 goto out;
1107
1108         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV,
1109                                       skb->data, skb->len,
1110                                       wlvif->sta.klv_template_id,
1111                                       wlvif->basic_rate);
1112
1113 out:
1114         dev_kfree_skb(skb);
1115         if (ret)
1116                 wl1271_warning("cmd build klv null data failed %d", ret);
1117
1118         return ret;
1119
1120 }
1121
1122 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1123                              u16 aid)
1124 {
1125         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1126         struct sk_buff *skb;
1127         int ret = 0;
1128
1129         skb = ieee80211_pspoll_get(wl->hw, vif);
1130         if (!skb)
1131                 goto out;
1132
1133         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1134                                       CMD_TEMPL_PS_POLL, skb->data,
1135                                       skb->len, 0, wlvif->basic_rate_set);
1136
1137 out:
1138         dev_kfree_skb(skb);
1139         return ret;
1140 }
1141
1142 int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1143                                u8 role_id, u8 band,
1144                                const u8 *ssid, size_t ssid_len,
1145                                const u8 *ie0, size_t ie0_len, const u8 *ie1,
1146                                size_t ie1_len, bool sched_scan)
1147 {
1148         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1149         struct sk_buff *skb;
1150         int ret;
1151         u32 rate;
1152         u16 template_id_2_4 = wl->scan_templ_id_2_4;
1153         u16 template_id_5 = wl->scan_templ_id_5;
1154
1155         wl1271_debug(DEBUG_SCAN, "build probe request band %d", band);
1156
1157         skb = ieee80211_probereq_get(wl->hw, vif->addr, ssid, ssid_len,
1158                                      ie0_len + ie1_len);
1159         if (!skb) {
1160                 ret = -ENOMEM;
1161                 goto out;
1162         }
1163         if (ie0_len)
1164                 skb_put_data(skb, ie0, ie0_len);
1165         if (ie1_len)
1166                 skb_put_data(skb, ie1, ie1_len);
1167
1168         if (sched_scan &&
1169             (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) {
1170                 template_id_2_4 = wl->sched_scan_templ_id_2_4;
1171                 template_id_5 = wl->sched_scan_templ_id_5;
1172         }
1173
1174         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
1175         if (band == NL80211_BAND_2GHZ)
1176                 ret = wl1271_cmd_template_set(wl, role_id,
1177                                               template_id_2_4,
1178                                               skb->data, skb->len, 0, rate);
1179         else
1180                 ret = wl1271_cmd_template_set(wl, role_id,
1181                                               template_id_5,
1182                                               skb->data, skb->len, 0, rate);
1183
1184 out:
1185         dev_kfree_skb(skb);
1186         return ret;
1187 }
1188 EXPORT_SYMBOL_GPL(wl12xx_cmd_build_probe_req);
1189
1190 struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,
1191                                               struct wl12xx_vif *wlvif,
1192                                               struct sk_buff *skb)
1193 {
1194         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1195         int ret;
1196         u32 rate;
1197
1198         if (!skb)
1199                 skb = ieee80211_ap_probereq_get(wl->hw, vif);
1200         if (!skb)
1201                 goto out;
1202
1203         wl1271_debug(DEBUG_SCAN, "set ap probe request template");
1204
1205         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]);
1206         if (wlvif->band == NL80211_BAND_2GHZ)
1207                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1208                                               CMD_TEMPL_CFG_PROBE_REQ_2_4,
1209                                               skb->data, skb->len, 0, rate);
1210         else
1211                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1212                                               CMD_TEMPL_CFG_PROBE_REQ_5,
1213                                               skb->data, skb->len, 0, rate);
1214
1215         if (ret < 0)
1216                 wl1271_error("Unable to set ap probe request template.");
1217
1218 out:
1219         return skb;
1220 }
1221
1222 int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1223 {
1224         int ret, extra = 0;
1225         u16 fc;
1226         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1227         struct sk_buff *skb;
1228         struct wl12xx_arp_rsp_template *tmpl;
1229         struct ieee80211_hdr_3addr *hdr;
1230         struct arphdr *arp_hdr;
1231
1232         skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) +
1233                             WL1271_EXTRA_SPACE_MAX);
1234         if (!skb) {
1235                 wl1271_error("failed to allocate buffer for arp rsp template");
1236                 return -ENOMEM;
1237         }
1238
1239         skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX);
1240
1241         tmpl = skb_put_zero(skb, sizeof(*tmpl));
1242
1243         /* llc layer */
1244         memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header));
1245         tmpl->llc_type = cpu_to_be16(ETH_P_ARP);
1246
1247         /* arp header */
1248         arp_hdr = &tmpl->arp_hdr;
1249         arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);
1250         arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);
1251         arp_hdr->ar_hln = ETH_ALEN;
1252         arp_hdr->ar_pln = 4;
1253         arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);
1254
1255         /* arp payload */
1256         memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN);
1257         tmpl->sender_ip = wlvif->ip_addr;
1258
1259         /* encryption space */
1260         switch (wlvif->encryption_type) {
1261         case KEY_TKIP:
1262                 if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
1263                         extra = WL1271_EXTRA_SPACE_TKIP;
1264                 break;
1265         case KEY_AES:
1266                 extra = WL1271_EXTRA_SPACE_AES;
1267                 break;
1268         case KEY_NONE:
1269         case KEY_WEP:
1270         case KEY_GEM:
1271                 extra = 0;
1272                 break;
1273         default:
1274                 wl1271_warning("Unknown encryption type: %d",
1275                                wlvif->encryption_type);
1276                 ret = -EINVAL;
1277                 goto out;
1278         }
1279
1280         if (extra) {
1281                 u8 *space = skb_push(skb, extra);
1282                 memset(space, 0, extra);
1283         }
1284
1285         /* QoS header - BE */
1286         if (wlvif->sta.qos)
1287                 memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16));
1288
1289         /* mac80211 header */
1290         hdr = skb_push(skb, sizeof(*hdr));
1291         memset(hdr, 0, sizeof(*hdr));
1292         fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS;
1293         if (wlvif->sta.qos)
1294                 fc |= IEEE80211_STYPE_QOS_DATA;
1295         else
1296                 fc |= IEEE80211_STYPE_DATA;
1297         if (wlvif->encryption_type != KEY_NONE)
1298                 fc |= IEEE80211_FCTL_PROTECTED;
1299
1300         hdr->frame_control = cpu_to_le16(fc);
1301         memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN);
1302         memcpy(hdr->addr2, vif->addr, ETH_ALEN);
1303         eth_broadcast_addr(hdr->addr3);
1304
1305         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP,
1306                                       skb->data, skb->len, 0,
1307                                       wlvif->basic_rate);
1308 out:
1309         dev_kfree_skb(skb);
1310         return ret;
1311 }
1312
1313 int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif)
1314 {
1315         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
1316         struct ieee80211_qos_hdr template;
1317
1318         memset(&template, 0, sizeof(template));
1319
1320         memcpy(template.addr1, vif->bss_conf.bssid, ETH_ALEN);
1321         memcpy(template.addr2, vif->addr, ETH_ALEN);
1322         memcpy(template.addr3, vif->bss_conf.bssid, ETH_ALEN);
1323
1324         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1325                                              IEEE80211_STYPE_QOS_NULLFUNC |
1326                                              IEEE80211_FCTL_TODS);
1327
1328         /* FIXME: not sure what priority to use here */
1329         template.qos_ctrl = cpu_to_le16(0);
1330
1331         return wl1271_cmd_template_set(wl, wlvif->role_id,
1332                                        CMD_TEMPL_QOS_NULL_DATA, &template,
1333                                        sizeof(template), 0,
1334                                        wlvif->basic_rate);
1335 }
1336
1337 int wl12xx_cmd_set_default_wep_key(struct wl1271 *wl, u8 id, u8 hlid)
1338 {
1339         struct wl1271_cmd_set_keys *cmd;
1340         int ret = 0;
1341
1342         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
1343
1344         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1345         if (!cmd) {
1346                 ret = -ENOMEM;
1347                 goto out;
1348         }
1349
1350         cmd->hlid = hlid;
1351         cmd->key_id = id;
1352         cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1353         cmd->key_action = cpu_to_le16(KEY_SET_ID);
1354         cmd->key_type = KEY_WEP;
1355
1356         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1357         if (ret < 0) {
1358                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
1359                 goto out;
1360         }
1361
1362 out:
1363         kfree(cmd);
1364
1365         return ret;
1366 }
1367
1368 int wl1271_cmd_set_sta_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1369                        u16 action, u8 id, u8 key_type,
1370                        u8 key_size, const u8 *key, const u8 *addr,
1371                        u32 tx_seq_32, u16 tx_seq_16)
1372 {
1373         struct wl1271_cmd_set_keys *cmd;
1374         int ret = 0;
1375
1376         /* hlid might have already been deleted */
1377         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
1378                 return 0;
1379
1380         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1381         if (!cmd) {
1382                 ret = -ENOMEM;
1383                 goto out;
1384         }
1385
1386         cmd->hlid = wlvif->sta.hlid;
1387
1388         if (key_type == KEY_WEP)
1389                 cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1390         else if (is_broadcast_ether_addr(addr))
1391                 cmd->lid_key_type = BROADCAST_LID_TYPE;
1392         else
1393                 cmd->lid_key_type = UNICAST_LID_TYPE;
1394
1395         cmd->key_action = cpu_to_le16(action);
1396         cmd->key_size = key_size;
1397         cmd->key_type = key_type;
1398
1399         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1400         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1401
1402         cmd->key_id = id;
1403
1404         if (key_type == KEY_TKIP) {
1405                 /*
1406                  * We get the key in the following form:
1407                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1408                  * but the target is expecting:
1409                  * TKIP - RX MIC - TX MIC
1410                  */
1411                 memcpy(cmd->key, key, 16);
1412                 memcpy(cmd->key + 16, key + 24, 8);
1413                 memcpy(cmd->key + 24, key + 16, 8);
1414
1415         } else {
1416                 memcpy(cmd->key, key, key_size);
1417         }
1418
1419         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1420
1421         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1422         if (ret < 0) {
1423                 wl1271_warning("could not set keys");
1424                 goto out;
1425         }
1426
1427 out:
1428         kfree(cmd);
1429
1430         return ret;
1431 }
1432
1433 /*
1434  * TODO: merge with sta/ibss into 1 set_key function.
1435  * note there are slight diffs
1436  */
1437 int wl1271_cmd_set_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1438                           u16 action, u8 id, u8 key_type,
1439                           u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
1440                           u16 tx_seq_16, bool is_pairwise)
1441 {
1442         struct wl1271_cmd_set_keys *cmd;
1443         int ret = 0;
1444         u8 lid_type;
1445
1446         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1447         if (!cmd)
1448                 return -ENOMEM;
1449
1450         if (hlid == wlvif->ap.bcast_hlid) {
1451                 if (key_type == KEY_WEP)
1452                         lid_type = WEP_DEFAULT_LID_TYPE;
1453                 else
1454                         lid_type = BROADCAST_LID_TYPE;
1455         } else if (is_pairwise) {
1456                 lid_type = UNICAST_LID_TYPE;
1457         } else {
1458                 lid_type = BROADCAST_LID_TYPE;
1459         }
1460
1461         wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d"
1462                      " hlid: %d", (int)action, (int)id, (int)lid_type,
1463                      (int)key_type, (int)hlid);
1464
1465         cmd->lid_key_type = lid_type;
1466         cmd->hlid = hlid;
1467         cmd->key_action = cpu_to_le16(action);
1468         cmd->key_size = key_size;
1469         cmd->key_type = key_type;
1470         cmd->key_id = id;
1471         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1472         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1473
1474         if (key_type == KEY_TKIP) {
1475                 /*
1476                  * We get the key in the following form:
1477                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1478                  * but the target is expecting:
1479                  * TKIP - RX MIC - TX MIC
1480                  */
1481                 memcpy(cmd->key, key, 16);
1482                 memcpy(cmd->key + 16, key + 24, 8);
1483                 memcpy(cmd->key + 24, key + 16, 8);
1484         } else {
1485                 memcpy(cmd->key, key, key_size);
1486         }
1487
1488         wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd));
1489
1490         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1491         if (ret < 0) {
1492                 wl1271_warning("could not set ap keys");
1493                 goto out;
1494         }
1495
1496 out:
1497         kfree(cmd);
1498         return ret;
1499 }
1500
1501 int wl12xx_cmd_set_peer_state(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1502                               u8 hlid)
1503 {
1504         struct wl12xx_cmd_set_peer_state *cmd;
1505         int ret = 0;
1506
1507         wl1271_debug(DEBUG_CMD, "cmd set peer state (hlid=%d)", hlid);
1508
1509         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1510         if (!cmd) {
1511                 ret = -ENOMEM;
1512                 goto out;
1513         }
1514
1515         cmd->hlid = hlid;
1516         cmd->state = WL1271_CMD_STA_STATE_CONNECTED;
1517
1518         /* wmm param is valid only for station role */
1519         if (wlvif->bss_type == BSS_TYPE_STA_BSS)
1520                 cmd->wmm = wlvif->wmm_enabled;
1521
1522         ret = wl1271_cmd_send(wl, CMD_SET_PEER_STATE, cmd, sizeof(*cmd), 0);
1523         if (ret < 0) {
1524                 wl1271_error("failed to send set peer state command");
1525                 goto out_free;
1526         }
1527
1528 out_free:
1529         kfree(cmd);
1530
1531 out:
1532         return ret;
1533 }
1534
1535 int wl12xx_cmd_add_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1536                         struct ieee80211_sta *sta, u8 hlid)
1537 {
1538         struct wl12xx_cmd_add_peer *cmd;
1539         int i, ret;
1540         u32 sta_rates;
1541
1542         wl1271_debug(DEBUG_CMD, "cmd add peer %d", (int)hlid);
1543
1544         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1545         if (!cmd) {
1546                 ret = -ENOMEM;
1547                 goto out;
1548         }
1549
1550         memcpy(cmd->addr, sta->addr, ETH_ALEN);
1551         cmd->bss_index = WL1271_AP_BSS_INDEX;
1552         cmd->aid = sta->aid;
1553         cmd->hlid = hlid;
1554         cmd->sp_len = sta->max_sp;
1555         cmd->wmm = sta->wme ? 1 : 0;
1556         cmd->session_id = wl->session_ids[hlid];
1557         cmd->role_id = wlvif->role_id;
1558
1559         for (i = 0; i < NUM_ACCESS_CATEGORIES_COPY; i++)
1560                 if (sta->wme && (sta->uapsd_queues & BIT(i)))
1561                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1562                                         WL1271_PSD_UPSD_TRIGGER;
1563                 else
1564                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1565                                         WL1271_PSD_LEGACY;
1566
1567
1568         sta_rates = sta->deflink.supp_rates[wlvif->band];
1569         if (sta->deflink.ht_cap.ht_supported)
1570                 sta_rates |=
1571                         (sta->deflink.ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET) |
1572                         (sta->deflink.ht_cap.mcs.rx_mask[1] << HW_MIMO_RATES_OFFSET);
1573
1574         cmd->supported_rates =
1575                 cpu_to_le32(wl1271_tx_enabled_rates_get(wl, sta_rates,
1576                                                         wlvif->band));
1577
1578         wl1271_debug(DEBUG_CMD, "new peer rates=0x%x queues=0x%x",
1579                      cmd->supported_rates, sta->uapsd_queues);
1580
1581         ret = wl1271_cmd_send(wl, CMD_ADD_PEER, cmd, sizeof(*cmd), 0);
1582         if (ret < 0) {
1583                 wl1271_error("failed to initiate cmd add peer");
1584                 goto out_free;
1585         }
1586
1587 out_free:
1588         kfree(cmd);
1589
1590 out:
1591         return ret;
1592 }
1593
1594 int wl12xx_cmd_remove_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1595                            u8 hlid)
1596 {
1597         struct wl12xx_cmd_remove_peer *cmd;
1598         int ret;
1599         bool timeout = false;
1600
1601         wl1271_debug(DEBUG_CMD, "cmd remove peer %d", (int)hlid);
1602
1603         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1604         if (!cmd) {
1605                 ret = -ENOMEM;
1606                 goto out;
1607         }
1608
1609         cmd->hlid = hlid;
1610         /* We never send a deauth, mac80211 is in charge of this */
1611         cmd->reason_opcode = 0;
1612         cmd->send_deauth_flag = 0;
1613         cmd->role_id = wlvif->role_id;
1614
1615         ret = wl1271_cmd_send(wl, CMD_REMOVE_PEER, cmd, sizeof(*cmd), 0);
1616         if (ret < 0) {
1617                 wl1271_error("failed to initiate cmd remove peer");
1618                 goto out_free;
1619         }
1620
1621         ret = wl->ops->wait_for_event(wl,
1622                                       WLCORE_EVENT_PEER_REMOVE_COMPLETE,
1623                                       &timeout);
1624
1625         /*
1626          * We are ok with a timeout here. The event is sometimes not sent
1627          * due to a firmware bug. In case of another error (like SDIO timeout)
1628          * queue a recovery.
1629          */
1630         if (ret)
1631                 wl12xx_queue_recovery_work(wl);
1632
1633 out_free:
1634         kfree(cmd);
1635
1636 out:
1637         return ret;
1638 }
1639
1640 static int wlcore_get_reg_conf_ch_idx(enum nl80211_band band, u16 ch)
1641 {
1642         /*
1643          * map the given band/channel to the respective predefined
1644          * bit expected by the fw
1645          */
1646         switch (band) {
1647         case NL80211_BAND_2GHZ:
1648                 /* channels 1..14 are mapped to 0..13 */
1649                 if (ch >= 1 && ch <= 14)
1650                         return ch - 1;
1651                 break;
1652         case NL80211_BAND_5GHZ:
1653                 switch (ch) {
1654                 case 8 ... 16:
1655                         /* channels 8,12,16 are mapped to 18,19,20 */
1656                         return 18 + (ch-8)/4;
1657                 case 34 ... 48:
1658                         /* channels 34,36..48 are mapped to 21..28 */
1659                         return 21 + (ch-34)/2;
1660                 case 52 ... 64:
1661                         /* channels 52,56..64 are mapped to 29..32 */
1662                         return 29 + (ch-52)/4;
1663                 case 100 ... 140:
1664                         /* channels 100,104..140 are mapped to 33..43 */
1665                         return 33 + (ch-100)/4;
1666                 case 149 ... 165:
1667                         /* channels 149,153..165 are mapped to 44..48 */
1668                         return 44 + (ch-149)/4;
1669                 default:
1670                         break;
1671                 }
1672                 break;
1673         default:
1674                 break;
1675         }
1676
1677         wl1271_error("%s: unknown band/channel: %d/%d", __func__, band, ch);
1678         return -1;
1679 }
1680
1681 void wlcore_set_pending_regdomain_ch(struct wl1271 *wl, u16 channel,
1682                                      enum nl80211_band band)
1683 {
1684         int ch_bit_idx = 0;
1685
1686         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1687                 return;
1688
1689         ch_bit_idx = wlcore_get_reg_conf_ch_idx(band, channel);
1690
1691         if (ch_bit_idx >= 0 && ch_bit_idx <= WL1271_MAX_CHANNELS)
1692                 __set_bit_le(ch_bit_idx, (long *)wl->reg_ch_conf_pending);
1693 }
1694
1695 int wlcore_cmd_regdomain_config_locked(struct wl1271 *wl)
1696 {
1697         struct wl12xx_cmd_regdomain_dfs_config *cmd = NULL;
1698         int ret = 0, i, b, ch_bit_idx;
1699         __le32 tmp_ch_bitmap[2] __aligned(sizeof(unsigned long));
1700         struct wiphy *wiphy = wl->hw->wiphy;
1701         struct ieee80211_supported_band *band;
1702         bool timeout = false;
1703
1704         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
1705                 return 0;
1706
1707         wl1271_debug(DEBUG_CMD, "cmd reg domain config");
1708
1709         memcpy(tmp_ch_bitmap, wl->reg_ch_conf_pending, sizeof(tmp_ch_bitmap));
1710
1711         for (b = NL80211_BAND_2GHZ; b <= NL80211_BAND_5GHZ; b++) {
1712                 band = wiphy->bands[b];
1713                 for (i = 0; i < band->n_channels; i++) {
1714                         struct ieee80211_channel *channel = &band->channels[i];
1715                         u16 ch = channel->hw_value;
1716                         u32 flags = channel->flags;
1717
1718                         if (flags & (IEEE80211_CHAN_DISABLED |
1719                                      IEEE80211_CHAN_NO_IR))
1720                                 continue;
1721
1722                         if ((flags & IEEE80211_CHAN_RADAR) &&
1723                             channel->dfs_state != NL80211_DFS_AVAILABLE)
1724                                 continue;
1725
1726                         ch_bit_idx = wlcore_get_reg_conf_ch_idx(b, ch);
1727                         if (ch_bit_idx < 0)
1728                                 continue;
1729
1730                         __set_bit_le(ch_bit_idx, (long *)tmp_ch_bitmap);
1731                 }
1732         }
1733
1734         if (!memcmp(tmp_ch_bitmap, wl->reg_ch_conf_last, sizeof(tmp_ch_bitmap)))
1735                 goto out;
1736
1737         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1738         if (!cmd) {
1739                 ret = -ENOMEM;
1740                 goto out;
1741         }
1742
1743         cmd->ch_bit_map1 = tmp_ch_bitmap[0];
1744         cmd->ch_bit_map2 = tmp_ch_bitmap[1];
1745         cmd->dfs_region = wl->dfs_region;
1746
1747         wl1271_debug(DEBUG_CMD,
1748                      "cmd reg domain bitmap1: 0x%08x, bitmap2: 0x%08x",
1749                      cmd->ch_bit_map1, cmd->ch_bit_map2);
1750
1751         ret = wl1271_cmd_send(wl, CMD_DFS_CHANNEL_CONFIG, cmd, sizeof(*cmd), 0);
1752         if (ret < 0) {
1753                 wl1271_error("failed to send reg domain dfs config");
1754                 goto out;
1755         }
1756
1757         ret = wl->ops->wait_for_event(wl,
1758                                       WLCORE_EVENT_DFS_CONFIG_COMPLETE,
1759                                       &timeout);
1760         if (ret < 0 || timeout) {
1761                 wl1271_error("reg domain conf %serror",
1762                              timeout ? "completion " : "");
1763                 ret = timeout ? -ETIMEDOUT : ret;
1764                 goto out;
1765         }
1766
1767         memcpy(wl->reg_ch_conf_last, tmp_ch_bitmap, sizeof(tmp_ch_bitmap));
1768         memset(wl->reg_ch_conf_pending, 0, sizeof(wl->reg_ch_conf_pending));
1769
1770 out:
1771         kfree(cmd);
1772         return ret;
1773 }
1774
1775 int wl12xx_cmd_config_fwlog(struct wl1271 *wl)
1776 {
1777         struct wl12xx_cmd_config_fwlog *cmd;
1778         int ret = 0;
1779
1780         wl1271_debug(DEBUG_CMD, "cmd config firmware logger");
1781
1782         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1783         if (!cmd) {
1784                 ret = -ENOMEM;
1785                 goto out;
1786         }
1787
1788         cmd->logger_mode = wl->conf.fwlog.mode;
1789         cmd->log_severity = wl->conf.fwlog.severity;
1790         cmd->timestamp = wl->conf.fwlog.timestamp;
1791         cmd->output = wl->conf.fwlog.output;
1792         cmd->threshold = wl->conf.fwlog.threshold;
1793
1794         ret = wl1271_cmd_send(wl, CMD_CONFIG_FWLOGGER, cmd, sizeof(*cmd), 0);
1795         if (ret < 0) {
1796                 wl1271_error("failed to send config firmware logger command");
1797                 goto out_free;
1798         }
1799
1800 out_free:
1801         kfree(cmd);
1802
1803 out:
1804         return ret;
1805 }
1806
1807 int wl12xx_cmd_start_fwlog(struct wl1271 *wl)
1808 {
1809         struct wl12xx_cmd_start_fwlog *cmd;
1810         int ret = 0;
1811
1812         wl1271_debug(DEBUG_CMD, "cmd start firmware logger");
1813
1814         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1815         if (!cmd) {
1816                 ret = -ENOMEM;
1817                 goto out;
1818         }
1819
1820         ret = wl1271_cmd_send(wl, CMD_START_FWLOGGER, cmd, sizeof(*cmd), 0);
1821         if (ret < 0) {
1822                 wl1271_error("failed to send start firmware logger command");
1823                 goto out_free;
1824         }
1825
1826 out_free:
1827         kfree(cmd);
1828
1829 out:
1830         return ret;
1831 }
1832
1833 int wl12xx_cmd_stop_fwlog(struct wl1271 *wl)
1834 {
1835         struct wl12xx_cmd_stop_fwlog *cmd;
1836         int ret = 0;
1837
1838         wl1271_debug(DEBUG_CMD, "cmd stop firmware logger");
1839
1840         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1841         if (!cmd) {
1842                 ret = -ENOMEM;
1843                 goto out;
1844         }
1845
1846         ret = wl1271_cmd_send(wl, CMD_STOP_FWLOGGER, cmd, sizeof(*cmd), 0);
1847         if (ret < 0) {
1848                 wl1271_error("failed to send stop firmware logger command");
1849                 goto out_free;
1850         }
1851
1852 out_free:
1853         kfree(cmd);
1854
1855 out:
1856         return ret;
1857 }
1858
1859 static int wl12xx_cmd_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1860                           u8 role_id, enum nl80211_band band, u8 channel)
1861 {
1862         struct wl12xx_cmd_roc *cmd;
1863         int ret = 0;
1864
1865         wl1271_debug(DEBUG_CMD, "cmd roc %d (%d)", channel, role_id);
1866
1867         if (WARN_ON(role_id == WL12XX_INVALID_ROLE_ID))
1868                 return -EINVAL;
1869
1870         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1871         if (!cmd) {
1872                 ret = -ENOMEM;
1873                 goto out;
1874         }
1875
1876         cmd->role_id = role_id;
1877         cmd->channel = channel;
1878         switch (band) {
1879         case NL80211_BAND_2GHZ:
1880                 cmd->band = WLCORE_BAND_2_4GHZ;
1881                 break;
1882         case NL80211_BAND_5GHZ:
1883                 cmd->band = WLCORE_BAND_5GHZ;
1884                 break;
1885         default:
1886                 wl1271_error("roc - unknown band: %d", (int)wlvif->band);
1887                 ret = -EINVAL;
1888                 goto out_free;
1889         }
1890
1891
1892         ret = wl1271_cmd_send(wl, CMD_REMAIN_ON_CHANNEL, cmd, sizeof(*cmd), 0);
1893         if (ret < 0) {
1894                 wl1271_error("failed to send ROC command");
1895                 goto out_free;
1896         }
1897
1898 out_free:
1899         kfree(cmd);
1900
1901 out:
1902         return ret;
1903 }
1904
1905 static int wl12xx_cmd_croc(struct wl1271 *wl, u8 role_id)
1906 {
1907         struct wl12xx_cmd_croc *cmd;
1908         int ret = 0;
1909
1910         wl1271_debug(DEBUG_CMD, "cmd croc (%d)", role_id);
1911
1912         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1913         if (!cmd) {
1914                 ret = -ENOMEM;
1915                 goto out;
1916         }
1917         cmd->role_id = role_id;
1918
1919         ret = wl1271_cmd_send(wl, CMD_CANCEL_REMAIN_ON_CHANNEL, cmd,
1920                               sizeof(*cmd), 0);
1921         if (ret < 0) {
1922                 wl1271_error("failed to send ROC command");
1923                 goto out_free;
1924         }
1925
1926 out_free:
1927         kfree(cmd);
1928
1929 out:
1930         return ret;
1931 }
1932
1933 int wl12xx_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 role_id,
1934                enum nl80211_band band, u8 channel)
1935 {
1936         int ret = 0;
1937
1938         if (WARN_ON(test_bit(role_id, wl->roc_map)))
1939                 return 0;
1940
1941         ret = wl12xx_cmd_roc(wl, wlvif, role_id, band, channel);
1942         if (ret < 0)
1943                 goto out;
1944
1945         __set_bit(role_id, wl->roc_map);
1946 out:
1947         return ret;
1948 }
1949
1950 int wl12xx_croc(struct wl1271 *wl, u8 role_id)
1951 {
1952         int ret = 0;
1953
1954         if (WARN_ON(!test_bit(role_id, wl->roc_map)))
1955                 return 0;
1956
1957         ret = wl12xx_cmd_croc(wl, role_id);
1958         if (ret < 0)
1959                 goto out;
1960
1961         __clear_bit(role_id, wl->roc_map);
1962
1963         /*
1964          * Rearm the tx watchdog when removing the last ROC. This prevents
1965          * recoveries due to just finished ROCs - when Tx hasn't yet had
1966          * a chance to get out.
1967          */
1968         if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES)
1969                 wl12xx_rearm_tx_watchdog_locked(wl);
1970 out:
1971         return ret;
1972 }
1973
1974 int wl12xx_cmd_stop_channel_switch(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1975 {
1976         struct wl12xx_cmd_stop_channel_switch *cmd;
1977         int ret;
1978
1979         wl1271_debug(DEBUG_ACX, "cmd stop channel switch");
1980
1981         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1982         if (!cmd) {
1983                 ret = -ENOMEM;
1984                 goto out;
1985         }
1986
1987         cmd->role_id = wlvif->role_id;
1988
1989         ret = wl1271_cmd_send(wl, CMD_STOP_CHANNEL_SWICTH, cmd, sizeof(*cmd), 0);
1990         if (ret < 0) {
1991                 wl1271_error("failed to stop channel switch command");
1992                 goto out_free;
1993         }
1994
1995 out_free:
1996         kfree(cmd);
1997
1998 out:
1999         return ret;
2000 }
2001
2002 /* start dev role and roc on its channel */
2003 int wl12xx_start_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2004                      enum nl80211_band band, int channel)
2005 {
2006         int ret;
2007
2008         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2009                       wlvif->bss_type == BSS_TYPE_IBSS)))
2010                 return -EINVAL;
2011
2012         /* the dev role is already started for p2p mgmt interfaces */
2013         if (!wlcore_is_p2p_mgmt(wlvif)) {
2014                 ret = wl12xx_cmd_role_enable(wl,
2015                                              wl12xx_wlvif_to_vif(wlvif)->addr,
2016                                              WL1271_ROLE_DEVICE,
2017                                              &wlvif->dev_role_id);
2018                 if (ret < 0)
2019                         goto out;
2020         }
2021
2022         ret = wl12xx_cmd_role_start_dev(wl, wlvif, band, channel);
2023         if (ret < 0)
2024                 goto out_disable;
2025
2026         ret = wl12xx_roc(wl, wlvif, wlvif->dev_role_id, band, channel);
2027         if (ret < 0)
2028                 goto out_stop;
2029
2030         return 0;
2031
2032 out_stop:
2033         wl12xx_cmd_role_stop_dev(wl, wlvif);
2034 out_disable:
2035         if (!wlcore_is_p2p_mgmt(wlvif))
2036                 wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2037 out:
2038         return ret;
2039 }
2040
2041 /* croc dev hlid, and stop the role */
2042 int wl12xx_stop_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2043 {
2044         int ret;
2045
2046         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
2047                       wlvif->bss_type == BSS_TYPE_IBSS)))
2048                 return -EINVAL;
2049
2050         /* flush all pending packets */
2051         ret = wlcore_tx_work_locked(wl);
2052         if (ret < 0)
2053                 goto out;
2054
2055         if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
2056                 ret = wl12xx_croc(wl, wlvif->dev_role_id);
2057                 if (ret < 0)
2058                         goto out;
2059         }
2060
2061         ret = wl12xx_cmd_role_stop_dev(wl, wlvif);
2062         if (ret < 0)
2063                 goto out;
2064
2065         if (!wlcore_is_p2p_mgmt(wlvif)) {
2066                 ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2067                 if (ret < 0)
2068                         goto out;
2069         }
2070
2071 out:
2072         return ret;
2073 }
2074
2075 int wlcore_cmd_generic_cfg(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2076                            u8 feature, u8 enable, u8 value)
2077 {
2078         struct wlcore_cmd_generic_cfg *cmd;
2079         int ret;
2080
2081         wl1271_debug(DEBUG_CMD,
2082                      "cmd generic cfg (role %d feature %d enable %d value %d)",
2083                      wlvif->role_id, feature, enable, value);
2084
2085         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2086         if (!cmd)
2087                 return -ENOMEM;
2088
2089         cmd->role_id = wlvif->role_id;
2090         cmd->feature = feature;
2091         cmd->enable = enable;
2092         cmd->value = value;
2093
2094         ret = wl1271_cmd_send(wl, CMD_GENERIC_CFG, cmd, sizeof(*cmd), 0);
2095         if (ret < 0) {
2096                 wl1271_error("failed to send generic cfg command");
2097                 goto out_free;
2098         }
2099 out_free:
2100         kfree(cmd);
2101         return ret;
2102 }
2103 EXPORT_SYMBOL_GPL(wlcore_cmd_generic_cfg);