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