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 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
 356void 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
 409u8 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}
 425EXPORT_SYMBOL_GPL(wlcore_get_native_channel_type);
 426
 427static 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
 467err_hlid:
 468	/* clear links on error */
 469	wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 470
 471out_free:
 472	kfree(cmd);
 473
 474out:
 475	return ret;
 476}
 477
 478static 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
 507out_free:
 508	kfree(cmd);
 509
 510out:
 511	return ret;
 512}
 513
 514int 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
 578err_hlid:
 579	/* clear links on error. */
 580	wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 581
 582out_free:
 583	kfree(cmd);
 584
 585out:
 586	return ret;
 587}
 588
 589/* use this function to stop ibss as well */
 590int 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
 618out_free:
 619	kfree(cmd);
 620
 621out:
 622	return ret;
 623}
 624
 625int 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
 722out_free_bcast:
 723	wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 724
 725out_free_global:
 726	wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 727
 728out_free:
 729	kfree(cmd);
 730
 731out:
 732	return ret;
 733}
 734
 735int 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
 759out_free:
 760	kfree(cmd);
 761
 762out:
 763	return ret;
 764}
 765
 766int 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
 818err_hlid:
 819	/* clear links on error. */
 820	wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 821
 822out_free:
 823	kfree(cmd);
 824
 825out:
 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 */
 838int 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}
 857EXPORT_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 */
 868int 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 */
 898int 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 */
 928int 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}
 936EXPORT_SYMBOL_GPL(wl1271_cmd_configure);
 937
 938int 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
 983out:
 984	kfree(cmd);
 985	return ret;
 986}
 987EXPORT_SYMBOL_GPL(wl1271_cmd_data_path);
 988
 989int 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
1014out:
1015	kfree(ps_params);
1016	return ret;
1017}
1018
1019int 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
1056out_free:
1057	kfree(cmd);
1058
1059out:
1060	return ret;
1061}
1062
1063int 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
1088out:
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
1097int 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
1113out:
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
1122int 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
1137out:
1138	dev_kfree_skb(skb);
1139	return ret;
1140}
1141
1142int 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
1184out:
1185	dev_kfree_skb(skb);
1186	return ret;
1187}
1188EXPORT_SYMBOL_GPL(wl12xx_cmd_build_probe_req);
1189
1190struct 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
1218out:
1219	return skb;
1220}
1221
1222int 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);
1308out:
1309	dev_kfree_skb(skb);
1310	return ret;
1311}
1312
1313int 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
1337int 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
1362out:
1363	kfree(cmd);
1364
1365	return ret;
1366}
1367
1368int 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
1427out:
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 */
1437int 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
1496out:
1497	kfree(cmd);
1498	return ret;
1499}
1500
1501int 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
1528out_free:
1529	kfree(cmd);
1530
1531out:
1532	return ret;
1533}
1534
1535int 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
1587out_free:
1588	kfree(cmd);
1589
1590out:
1591	return ret;
1592}
1593
1594int 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
1633out_free:
1634	kfree(cmd);
1635
1636out:
1637	return ret;
1638}
1639
1640static 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
1681void 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
1695int 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
1770out:
1771	kfree(cmd);
1772	return ret;
1773}
1774
1775int 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
1800out_free:
1801	kfree(cmd);
1802
1803out:
1804	return ret;
1805}
1806
1807int 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
1826out_free:
1827	kfree(cmd);
1828
1829out:
1830	return ret;
1831}
1832
1833int 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
1852out_free:
1853	kfree(cmd);
1854
1855out:
1856	return ret;
1857}
1858
1859static 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
1898out_free:
1899	kfree(cmd);
1900
1901out:
1902	return ret;
1903}
1904
1905static 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
1926out_free:
1927	kfree(cmd);
1928
1929out:
1930	return ret;
1931}
1932
1933int 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);
1946out:
1947	return ret;
1948}
1949
1950int 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);
1970out:
1971	return ret;
1972}
1973
1974int 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
1995out_free:
1996	kfree(cmd);
1997
1998out:
1999	return ret;
2000}
2001
2002/* start dev role and roc on its channel */
2003int 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
2032out_stop:
2033	wl12xx_cmd_role_stop_dev(wl, wlvif);
2034out_disable:
2035	if (!wlcore_is_p2p_mgmt(wlvif))
2036		wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2037out:
2038	return ret;
2039}
2040
2041/* croc dev hlid, and stop the role */
2042int 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
2071out:
2072	return ret;
2073}
2074
2075int 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	}
2099out_free:
2100	kfree(cmd);
2101	return ret;
2102}
2103EXPORT_SYMBOL_GPL(wlcore_cmd_generic_cfg);