1/*
   2 * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
   3 *
   4 * Permission to use, copy, modify, and/or distribute this software for any
   5 * purpose with or without fee is hereby granted, provided that the above
   6 * copyright notice and this permission notice appear in all copies.
   7 *
   8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15 */
  16
  17#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19#include <linux/module.h>
  20#include <linux/firmware.h>
  21#include <linux/platform_device.h>
  22#include <linux/of.h>
  23#include <linux/of_address.h>
  24#include <linux/rpmsg.h>
  25#include <linux/soc/qcom/smem_state.h>
  26#include <linux/soc/qcom/wcnss_ctrl.h>
  27#include <net/ipv6.h>
  28#include "wcn36xx.h"
  29#include "testmode.h"
  30#include "firmware.h"
  31
  32unsigned int wcn36xx_dbg_mask;
  33module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
  34MODULE_PARM_DESC(debug_mask, "Debugging mask");
  35
  36#define CHAN2G(_freq, _idx) { \
  37	.band = NL80211_BAND_2GHZ, \
  38	.center_freq = (_freq), \
  39	.hw_value = (_idx), \
  40	.max_power = 25, \
  41}
  42
  43#define CHAN5G(_freq, _idx, _phy_val) { \
  44	.band = NL80211_BAND_5GHZ, \
  45	.center_freq = (_freq), \
  46	.hw_value = (_phy_val) << HW_VALUE_PHY_SHIFT | HW_VALUE_CHANNEL(_idx), \
  47	.max_power = 25, \
  48}
  49
  50/* The wcn firmware expects channel values to matching
  51 * their mnemonic values. So use these for .hw_value. */
  52static struct ieee80211_channel wcn_2ghz_channels[] = {
  53	CHAN2G(2412, 1), /* Channel 1 */
  54	CHAN2G(2417, 2), /* Channel 2 */
  55	CHAN2G(2422, 3), /* Channel 3 */
  56	CHAN2G(2427, 4), /* Channel 4 */
  57	CHAN2G(2432, 5), /* Channel 5 */
  58	CHAN2G(2437, 6), /* Channel 6 */
  59	CHAN2G(2442, 7), /* Channel 7 */
  60	CHAN2G(2447, 8), /* Channel 8 */
  61	CHAN2G(2452, 9), /* Channel 9 */
  62	CHAN2G(2457, 10), /* Channel 10 */
  63	CHAN2G(2462, 11), /* Channel 11 */
  64	CHAN2G(2467, 12), /* Channel 12 */
  65	CHAN2G(2472, 13), /* Channel 13 */
  66	CHAN2G(2484, 14)  /* Channel 14 */
  67
  68};
  69
  70static struct ieee80211_channel wcn_5ghz_channels[] = {
  71	CHAN5G(5180, 36, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  72	CHAN5G(5200, 40, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  73	CHAN5G(5220, 44, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  74	CHAN5G(5240, 48, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  75	CHAN5G(5260, 52, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  76	CHAN5G(5280, 56, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  77	CHAN5G(5300, 60, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  78	CHAN5G(5320, 64, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  79	CHAN5G(5500, 100, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  80	CHAN5G(5520, 104, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  81	CHAN5G(5540, 108, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  82	CHAN5G(5560, 112, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  83	CHAN5G(5580, 116, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  84	CHAN5G(5600, 120, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  85	CHAN5G(5620, 124, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  86	CHAN5G(5640, 128, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  87	CHAN5G(5660, 132, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  88	CHAN5G(5680, 136, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  89	CHAN5G(5700, 140, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  90	CHAN5G(5720, 144, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  91	CHAN5G(5745, 149, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_LOW),
  92	CHAN5G(5765, 153, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_LOW),
  93	CHAN5G(5785, 157, PHY_QUADRUPLE_CHANNEL_20MHZ_LOW_40MHZ_HIGH),
  94	CHAN5G(5805, 161, PHY_QUADRUPLE_CHANNEL_20MHZ_HIGH_40MHZ_HIGH),
  95	CHAN5G(5825, 165, 0)
  96};
  97
  98#define RATE(_bitrate, _hw_rate, _flags) { \
  99	.bitrate        = (_bitrate),                   \
 100	.flags          = (_flags),                     \
 101	.hw_value       = (_hw_rate),                   \
 102	.hw_value_short = (_hw_rate)  \
 103}
 104
 105static struct ieee80211_rate wcn_2ghz_rates[] = {
 106	RATE(10, HW_RATE_INDEX_1MBPS, 0),
 107	RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 108	RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 109	RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
 110	RATE(60, HW_RATE_INDEX_6MBPS, 0),
 111	RATE(90, HW_RATE_INDEX_9MBPS, 0),
 112	RATE(120, HW_RATE_INDEX_12MBPS, 0),
 113	RATE(180, HW_RATE_INDEX_18MBPS, 0),
 114	RATE(240, HW_RATE_INDEX_24MBPS, 0),
 115	RATE(360, HW_RATE_INDEX_36MBPS, 0),
 116	RATE(480, HW_RATE_INDEX_48MBPS, 0),
 117	RATE(540, HW_RATE_INDEX_54MBPS, 0)
 118};
 119
 120static struct ieee80211_rate wcn_5ghz_rates[] = {
 121	RATE(60, HW_RATE_INDEX_6MBPS, 0),
 122	RATE(90, HW_RATE_INDEX_9MBPS, 0),
 123	RATE(120, HW_RATE_INDEX_12MBPS, 0),
 124	RATE(180, HW_RATE_INDEX_18MBPS, 0),
 125	RATE(240, HW_RATE_INDEX_24MBPS, 0),
 126	RATE(360, HW_RATE_INDEX_36MBPS, 0),
 127	RATE(480, HW_RATE_INDEX_48MBPS, 0),
 128	RATE(540, HW_RATE_INDEX_54MBPS, 0)
 129};
 130
 131static struct ieee80211_supported_band wcn_band_2ghz = {
 132	.channels	= wcn_2ghz_channels,
 133	.n_channels	= ARRAY_SIZE(wcn_2ghz_channels),
 134	.bitrates	= wcn_2ghz_rates,
 135	.n_bitrates	= ARRAY_SIZE(wcn_2ghz_rates),
 136	.ht_cap		= {
 137		.cap =	IEEE80211_HT_CAP_GRN_FLD |
 138			IEEE80211_HT_CAP_SGI_20 |
 139			IEEE80211_HT_CAP_DSSSCCK40 |
 140			IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 141			IEEE80211_HT_CAP_SGI_40 |
 142			IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 143		.ht_supported = true,
 144		.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 145		.ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 146		.mcs = {
 147			.rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 148			.rx_highest = cpu_to_le16(72),
 149			.tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 150		}
 151	}
 152};
 153
 154static struct ieee80211_supported_band wcn_band_5ghz = {
 155	.channels	= wcn_5ghz_channels,
 156	.n_channels	= ARRAY_SIZE(wcn_5ghz_channels),
 157	.bitrates	= wcn_5ghz_rates,
 158	.n_bitrates	= ARRAY_SIZE(wcn_5ghz_rates),
 159	.ht_cap		= {
 160		.cap =	IEEE80211_HT_CAP_GRN_FLD |
 161			IEEE80211_HT_CAP_SGI_20 |
 162			IEEE80211_HT_CAP_DSSSCCK40 |
 163			IEEE80211_HT_CAP_LSIG_TXOP_PROT |
 164			IEEE80211_HT_CAP_SGI_40 |
 165			IEEE80211_HT_CAP_SUP_WIDTH_20_40,
 166		.ht_supported = true,
 167		.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
 168		.ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
 169		.mcs = {
 170			.rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
 171			.rx_highest = cpu_to_le16(150),
 172			.tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 173		}
 174	}
 175};
 176
 177#ifdef CONFIG_PM
 178
 179static const struct wiphy_wowlan_support wowlan_support = {
 180	.flags = WIPHY_WOWLAN_ANY	|
 181		 WIPHY_WOWLAN_MAGIC_PKT	|
 182		 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
 183};
 184
 185#endif
 186
 187static inline u8 get_sta_index(struct ieee80211_vif *vif,
 188			       struct wcn36xx_sta *sta_priv)
 189{
 190	return NL80211_IFTYPE_STATION == vif->type ?
 191	       sta_priv->bss_sta_index :
 192	       sta_priv->sta_index;
 193}
 194
 195static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
 196{
 197	int i;
 198
 199	for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
 200		if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, i)) {
 201			wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n",
 202				    wcn36xx_firmware_get_cap_name(i));
 203		}
 204	}
 205}
 206
 207static int wcn36xx_start(struct ieee80211_hw *hw)
 208{
 209	struct wcn36xx *wcn = hw->priv;
 210	int ret;
 211
 212	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
 213
 214	/* SMD initialization */
 215	ret = wcn36xx_smd_open(wcn);
 216	if (ret) {
 217		wcn36xx_err("Failed to open smd channel: %d\n", ret);
 218		goto out_err;
 219	}
 220
 221	/* Allocate memory pools for Mgmt BD headers and Data BD headers */
 222	ret = wcn36xx_dxe_allocate_mem_pools(wcn);
 223	if (ret) {
 224		wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
 225		goto out_smd_close;
 226	}
 227
 228	ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
 229	if (ret) {
 230		wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
 231		goto out_free_dxe_pool;
 232	}
 233
 234	ret = wcn36xx_smd_load_nv(wcn);
 235	if (ret) {
 236		wcn36xx_err("Failed to push NV to chip\n");
 237		goto out_free_dxe_ctl;
 238	}
 239
 240	ret = wcn36xx_smd_start(wcn);
 241	if (ret) {
 242		wcn36xx_err("Failed to start chip\n");
 243		goto out_free_dxe_ctl;
 244	}
 245
 246	if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
 247		ret = wcn36xx_smd_feature_caps_exchange(wcn);
 248		if (ret)
 249			wcn36xx_warn("Exchange feature caps failed\n");
 250		else
 251			wcn36xx_feat_caps_info(wcn);
 252	}
 253
 254	/* DMA channel initialization */
 255	ret = wcn36xx_dxe_init(wcn);
 256	if (ret) {
 257		wcn36xx_err("DXE init failed\n");
 258		goto out_smd_stop;
 259	}
 260
 261	wcn36xx_debugfs_init(wcn);
 262
 263	INIT_LIST_HEAD(&wcn->vif_list);
 264	spin_lock_init(&wcn->dxe_lock);
 265	spin_lock_init(&wcn->survey_lock);
 266
 267	return 0;
 268
 269out_smd_stop:
 270	wcn36xx_smd_stop(wcn);
 271out_free_dxe_ctl:
 272	wcn36xx_dxe_free_ctl_blks(wcn);
 273out_free_dxe_pool:
 274	wcn36xx_dxe_free_mem_pools(wcn);
 275out_smd_close:
 276	wcn36xx_smd_close(wcn);
 277out_err:
 278	return ret;
 279}
 280
 281static void wcn36xx_stop(struct ieee80211_hw *hw)
 282{
 283	struct wcn36xx *wcn = hw->priv;
 284
 285	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
 286
 287	mutex_lock(&wcn->scan_lock);
 288	if (wcn->scan_req) {
 289		struct cfg80211_scan_info scan_info = {
 290			.aborted = true,
 291		};
 292
 293		ieee80211_scan_completed(wcn->hw, &scan_info);
 294	}
 295	wcn->scan_req = NULL;
 296	mutex_unlock(&wcn->scan_lock);
 297
 298	wcn36xx_debugfs_exit(wcn);
 299	wcn36xx_smd_stop(wcn);
 300	wcn36xx_dxe_deinit(wcn);
 301	wcn36xx_smd_close(wcn);
 302
 303	wcn36xx_dxe_free_mem_pools(wcn);
 304	wcn36xx_dxe_free_ctl_blks(wcn);
 305}
 306
 307static void wcn36xx_change_ps(struct wcn36xx *wcn, bool enable)
 308{
 309	struct ieee80211_vif *vif = NULL;
 310	struct wcn36xx_vif *tmp;
 311
 312	list_for_each_entry(tmp, &wcn->vif_list, list) {
 313		vif = wcn36xx_priv_to_vif(tmp);
 314		if (enable && !wcn->sw_scan) {
 315			if (vif->cfg.ps) /* ps allowed ? */
 316				wcn36xx_pmc_enter_bmps_state(wcn, vif);
 317		} else {
 318			wcn36xx_pmc_exit_bmps_state(wcn, vif);
 319		}
 320	}
 321}
 322
 323static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
 324{
 325	struct ieee80211_vif *vif = NULL;
 326	struct wcn36xx_vif *tmp;
 327	struct ieee80211_supported_band *band;
 328	struct ieee80211_channel *channel = NULL;
 329	unsigned long flags;
 330	int i, j;
 331
 332	for (i = 0; i < ARRAY_SIZE(wcn->hw->wiphy->bands); i++) {
 333		band = wcn->hw->wiphy->bands[i];
 334		if (!band)
 335			break;
 336		for (j = 0; j < band->n_channels; j++) {
 337			if (HW_VALUE_CHANNEL(band->channels[j].hw_value) == ch) {
 338				channel = &band->channels[j];
 339				break;
 340			}
 341		}
 342		if (channel)
 343			break;
 344	}
 345
 346	if (!channel) {
 347		wcn36xx_err("Cannot tune to channel %d\n", ch);
 348		return;
 349	}
 350
 351	spin_lock_irqsave(&wcn->survey_lock, flags);
 352	wcn->band = band;
 353	wcn->channel = channel;
 354	spin_unlock_irqrestore(&wcn->survey_lock, flags);
 355
 356	list_for_each_entry(tmp, &wcn->vif_list, list) {
 357		vif = wcn36xx_priv_to_vif(tmp);
 358		wcn36xx_smd_switch_channel(wcn, vif, ch);
 359	}
 360
 361	return;
 362}
 363
 364static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 365{
 366	struct wcn36xx *wcn = hw->priv;
 367	int ret;
 368
 369	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 370
 371	mutex_lock(&wcn->conf_mutex);
 372
 373	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 374		int ch = WCN36XX_HW_CHANNEL(wcn);
 375		wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
 376			    ch);
 377
 378		if (wcn->sw_scan_opchannel == ch && wcn->sw_scan_channel) {
 379			/* If channel is the initial operating channel, we may
 380			 * want to receive/transmit regular data packets, then
 381			 * simply stop the scan session and exit PS mode.
 382			 */
 383			if (wcn->sw_scan_channel)
 384				wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
 385			if (wcn->sw_scan_init) {
 386				wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
 387							wcn->sw_scan_vif);
 388			}
 389		} else if (wcn->sw_scan) {
 390			/* A scan is ongoing, do not change the operating
 391			 * channel, but start a scan session on the channel.
 392			 */
 393			if (wcn->sw_scan_channel)
 394				wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
 395			if (!wcn->sw_scan_init) {
 396				/* This can fail if we are unable to notify the
 397				 * operating channel.
 398				 */
 399				ret = wcn36xx_smd_init_scan(wcn,
 400							    HAL_SYS_MODE_SCAN,
 401							    wcn->sw_scan_vif);
 402				if (ret) {
 403					mutex_unlock(&wcn->conf_mutex);
 404					return -EIO;
 405				}
 406			}
 407			wcn36xx_smd_start_scan(wcn, ch);
 408		} else {
 409			wcn36xx_change_opchannel(wcn, ch);
 410		}
 411	}
 412
 413	if (changed & IEEE80211_CONF_CHANGE_PS)
 414		wcn36xx_change_ps(wcn, hw->conf.flags & IEEE80211_CONF_PS);
 415
 416	if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 417		if (hw->conf.flags & IEEE80211_CONF_IDLE)
 418			wcn36xx_smd_enter_imps(wcn);
 419		else
 420			wcn36xx_smd_exit_imps(wcn);
 421	}
 422
 423	mutex_unlock(&wcn->conf_mutex);
 424
 425	return 0;
 426}
 427
 428static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
 429				     unsigned int changed,
 430				     unsigned int *total, u64 multicast)
 431{
 432	struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 433	struct wcn36xx *wcn = hw->priv;
 434	struct wcn36xx_vif *tmp;
 435	struct ieee80211_vif *vif = NULL;
 436
 437	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
 438
 439	mutex_lock(&wcn->conf_mutex);
 440
 441	*total &= FIF_ALLMULTI;
 442
 443	fp = (void *)(unsigned long)multicast;
 444	list_for_each_entry(tmp, &wcn->vif_list, list) {
 445		vif = wcn36xx_priv_to_vif(tmp);
 446
 447		/* FW handles MC filtering only when connected as STA */
 448		if (*total & FIF_ALLMULTI)
 449			wcn36xx_smd_set_mc_list(wcn, vif, NULL);
 450		else if (NL80211_IFTYPE_STATION == vif->type && tmp->sta_assoc)
 451			wcn36xx_smd_set_mc_list(wcn, vif, fp);
 452	}
 453
 454	mutex_unlock(&wcn->conf_mutex);
 455	kfree(fp);
 456}
 457
 458static u64 wcn36xx_prepare_multicast(struct ieee80211_hw *hw,
 459				     struct netdev_hw_addr_list *mc_list)
 460{
 461	struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp;
 462	struct netdev_hw_addr *ha;
 463
 464	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac prepare multicast list\n");
 465	fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
 466	if (!fp) {
 467		wcn36xx_err("Out of memory setting filters.\n");
 468		return 0;
 469	}
 470
 471	fp->mc_addr_count = 0;
 472	/* update multicast filtering parameters */
 473	if (netdev_hw_addr_list_count(mc_list) <=
 474	    WCN36XX_HAL_MAX_NUM_MULTICAST_ADDRESS) {
 475		netdev_hw_addr_list_for_each(ha, mc_list) {
 476			memcpy(fp->mc_addr[fp->mc_addr_count],
 477					ha->addr, ETH_ALEN);
 478			fp->mc_addr_count++;
 479		}
 480	}
 481
 482	return (u64)(unsigned long)fp;
 483}
 484
 485static void wcn36xx_tx(struct ieee80211_hw *hw,
 486		       struct ieee80211_tx_control *control,
 487		       struct sk_buff *skb)
 488{
 489	struct wcn36xx *wcn = hw->priv;
 490	struct wcn36xx_sta *sta_priv = NULL;
 491
 492	if (control->sta)
 493		sta_priv = wcn36xx_sta_to_priv(control->sta);
 494
 495	if (wcn36xx_start_tx(wcn, sta_priv, skb))
 496		ieee80211_free_txskb(wcn->hw, skb);
 497}
 498
 499static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 500			   struct ieee80211_vif *vif,
 501			   struct ieee80211_sta *sta,
 502			   struct ieee80211_key_conf *key_conf)
 503{
 504	struct wcn36xx *wcn = hw->priv;
 505	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 506	struct wcn36xx_sta *sta_priv = sta ? wcn36xx_sta_to_priv(sta) : NULL;
 507	int ret = 0;
 508	u8 key[WLAN_MAX_KEY_LEN];
 509
 510	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
 511	wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
 512		    cmd, key_conf->cipher, key_conf->keyidx,
 513		    key_conf->keylen, key_conf->flags);
 514	wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
 515			 key_conf->key,
 516			 key_conf->keylen);
 517
 518	mutex_lock(&wcn->conf_mutex);
 519
 520	switch (key_conf->cipher) {
 521	case WLAN_CIPHER_SUITE_WEP40:
 522		vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP40;
 523		break;
 524	case WLAN_CIPHER_SUITE_WEP104:
 525		vif_priv->encrypt_type = WCN36XX_HAL_ED_WEP104;
 526		break;
 527	case WLAN_CIPHER_SUITE_CCMP:
 528		vif_priv->encrypt_type = WCN36XX_HAL_ED_CCMP;
 529		break;
 530	case WLAN_CIPHER_SUITE_TKIP:
 531		vif_priv->encrypt_type = WCN36XX_HAL_ED_TKIP;
 532		break;
 533	default:
 534		wcn36xx_err("Unsupported key type 0x%x\n",
 535			      key_conf->cipher);
 536		ret = -EOPNOTSUPP;
 537		goto out;
 538	}
 539
 540	switch (cmd) {
 541	case SET_KEY:
 542		if (WCN36XX_HAL_ED_TKIP == vif_priv->encrypt_type) {
 543			/*
 544			 * Supplicant is sending key in the wrong order:
 545			 * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
 546			 * but HW expects it to be in the order as described in
 547			 * IEEE 802.11 spec (see chapter 11.7) like this:
 548			 * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
 549			 */
 550			memcpy(key, key_conf->key, 16);
 551			memcpy(key + 16, key_conf->key + 24, 8);
 552			memcpy(key + 24, key_conf->key + 16, 8);
 553		} else {
 554			memcpy(key, key_conf->key, key_conf->keylen);
 555		}
 556
 557		if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
 558			sta_priv->is_data_encrypted = true;
 559			/* Reconfigure bss with encrypt_type */
 560			if (NL80211_IFTYPE_STATION == vif->type) {
 561				wcn36xx_smd_config_bss(wcn,
 562						       vif,
 563						       sta,
 564						       sta->addr,
 565						       true);
 566				wcn36xx_smd_config_sta(wcn, vif, sta);
 567			}
 568
 569			wcn36xx_smd_set_stakey(wcn,
 570				vif_priv->encrypt_type,
 571				key_conf->keyidx,
 572				key_conf->keylen,
 573				key,
 574				get_sta_index(vif, sta_priv));
 575		} else {
 576			wcn36xx_smd_set_bsskey(wcn,
 577				vif_priv->encrypt_type,
 578				vif_priv->bss_index,
 579				key_conf->keyidx,
 580				key_conf->keylen,
 581				key);
 582
 583			if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
 584			    (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
 585				list_for_each_entry(sta_priv,
 586						    &vif_priv->sta_list, list) {
 587					sta_priv->is_data_encrypted = true;
 588					wcn36xx_smd_set_stakey(wcn,
 589						vif_priv->encrypt_type,
 590						key_conf->keyidx,
 591						key_conf->keylen,
 592						key,
 593						get_sta_index(vif, sta_priv));
 594				}
 595			}
 596		}
 597		break;
 598	case DISABLE_KEY:
 599		if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
 600			if (vif_priv->bss_index != WCN36XX_HAL_BSS_INVALID_IDX)
 601				wcn36xx_smd_remove_bsskey(wcn,
 602					vif_priv->encrypt_type,
 603					vif_priv->bss_index,
 604					key_conf->keyidx);
 605
 606			vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 607		} else {
 608			sta_priv->is_data_encrypted = false;
 609			/* do not remove key if disassociated */
 610			if (sta_priv->aid)
 611				wcn36xx_smd_remove_stakey(wcn,
 612					vif_priv->encrypt_type,
 613					key_conf->keyidx,
 614					get_sta_index(vif, sta_priv));
 615		}
 616		break;
 617	default:
 618		wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
 619		ret = -EOPNOTSUPP;
 620		goto out;
 621	}
 622
 623out:
 624	mutex_unlock(&wcn->conf_mutex);
 625
 626	return ret;
 627}
 628
 629static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
 630			   struct ieee80211_vif *vif,
 631			   struct ieee80211_scan_request *hw_req)
 632{
 633	struct wcn36xx *wcn = hw->priv;
 634
 635	if (!wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 636		/* fallback to mac80211 software scan */
 637		return 1;
 638	}
 639
 640	/* Firmware scan offload is limited to 48 channels, fallback to
 641	 * software driven scanning otherwise.
 642	 */
 643	if (hw_req->req.n_channels > 48) {
 644		wcn36xx_warn("Offload scan aborted, n_channels=%u",
 645			     hw_req->req.n_channels);
 646		return 1;
 647	}
 648
 649	mutex_lock(&wcn->scan_lock);
 650	if (wcn->scan_req) {
 651		mutex_unlock(&wcn->scan_lock);
 652		return -EBUSY;
 653	}
 654
 655	wcn->scan_aborted = false;
 656	wcn->scan_req = &hw_req->req;
 657
 658	mutex_unlock(&wcn->scan_lock);
 659
 660	wcn36xx_smd_update_channel_list(wcn, &hw_req->req);
 661	return wcn36xx_smd_start_hw_scan(wcn, vif, &hw_req->req);
 662}
 663
 664static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
 665				   struct ieee80211_vif *vif)
 666{
 667	struct wcn36xx *wcn = hw->priv;
 668
 669	mutex_lock(&wcn->scan_lock);
 670	wcn->scan_aborted = true;
 671	mutex_unlock(&wcn->scan_lock);
 672
 673	if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 674		/* ieee80211_scan_completed will be called on FW scan
 675		 * indication */
 676		wcn36xx_smd_stop_hw_scan(wcn);
 677	}
 678}
 679
 680static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
 681				  struct ieee80211_vif *vif,
 682				  const u8 *mac_addr)
 683{
 684	struct wcn36xx *wcn = hw->priv;
 685	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 686
 687	wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_start");
 688
 689	wcn->sw_scan = true;
 690	wcn->sw_scan_vif = vif;
 691	wcn->sw_scan_channel = 0;
 692	if (vif_priv->sta_assoc)
 693		wcn->sw_scan_opchannel = WCN36XX_HW_CHANNEL(wcn);
 694	else
 695		wcn->sw_scan_opchannel = 0;
 696}
 697
 698static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
 699				     struct ieee80211_vif *vif)
 700{
 701	struct wcn36xx *wcn = hw->priv;
 702
 703	wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_complete");
 704
 705	/* ensure that any scan session is finished */
 706	if (wcn->sw_scan_channel)
 707		wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
 708	if (wcn->sw_scan_init) {
 709		wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
 710					wcn->sw_scan_vif);
 711	}
 712	wcn->sw_scan = false;
 713	wcn->sw_scan_opchannel = 0;
 714}
 715
 716static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta,
 717					 enum nl80211_band band)
 718{
 719	int i, size;
 720	u16 *rates_table;
 721	struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
 722	u32 rates = sta->deflink.supp_rates[band];
 723
 724	memset(&sta_priv->supported_rates, 0,
 725		sizeof(sta_priv->supported_rates));
 726	sta_priv->supported_rates.op_rate_mode = STA_11n;
 727
 728	size = ARRAY_SIZE(sta_priv->supported_rates.dsss_rates);
 729	rates_table = sta_priv->supported_rates.dsss_rates;
 730	if (band == NL80211_BAND_2GHZ) {
 731		for (i = 0; i < size; i++) {
 732			if (rates & 0x01) {
 733				rates_table[i] = wcn_2ghz_rates[i].hw_value;
 734				rates = rates >> 1;
 735			}
 736		}
 737	}
 738
 739	size = ARRAY_SIZE(sta_priv->supported_rates.ofdm_rates);
 740	rates_table = sta_priv->supported_rates.ofdm_rates;
 741	for (i = 0; i < size; i++) {
 742		if (rates & 0x01) {
 743			rates_table[i] = wcn_5ghz_rates[i].hw_value;
 744			rates = rates >> 1;
 745		}
 746	}
 747
 748	if (sta->deflink.ht_cap.ht_supported) {
 749		BUILD_BUG_ON(sizeof(sta->deflink.ht_cap.mcs.rx_mask) >
 750			     sizeof(sta_priv->supported_rates.supported_mcs_set));
 751		memcpy(sta_priv->supported_rates.supported_mcs_set,
 752		       sta->deflink.ht_cap.mcs.rx_mask,
 753		       sizeof(sta->deflink.ht_cap.mcs.rx_mask));
 754	}
 755
 756	if (sta->deflink.vht_cap.vht_supported) {
 757		sta_priv->supported_rates.op_rate_mode = STA_11ac;
 758		sta_priv->supported_rates.vht_rx_mcs_map =
 759				sta->deflink.vht_cap.vht_mcs.rx_mcs_map;
 760		sta_priv->supported_rates.vht_tx_mcs_map =
 761				sta->deflink.vht_cap.vht_mcs.tx_mcs_map;
 762	}
 763}
 764
 765void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates)
 766{
 767	u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
 768		HW_RATE_INDEX_6MBPS,
 769		HW_RATE_INDEX_9MBPS,
 770		HW_RATE_INDEX_12MBPS,
 771		HW_RATE_INDEX_18MBPS,
 772		HW_RATE_INDEX_24MBPS,
 773		HW_RATE_INDEX_36MBPS,
 774		HW_RATE_INDEX_48MBPS,
 775		HW_RATE_INDEX_54MBPS
 776	};
 777	u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
 778		HW_RATE_INDEX_1MBPS,
 779		HW_RATE_INDEX_2MBPS,
 780		HW_RATE_INDEX_5_5MBPS,
 781		HW_RATE_INDEX_11MBPS
 782	};
 783
 784	rates->op_rate_mode = STA_11n;
 785	memcpy(rates->dsss_rates, dsss_rates,
 786		sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
 787	memcpy(rates->ofdm_rates, ofdm_rates,
 788		sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
 789	rates->supported_mcs_set[0] = 0xFF;
 790}
 791
 792void wcn36xx_set_default_rates_v1(struct wcn36xx_hal_supported_rates_v1 *rates)
 793{
 794	rates->op_rate_mode = STA_11ac;
 795	rates->vht_rx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
 796	rates->vht_tx_mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9;
 797}
 798
 799static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
 800				     struct ieee80211_vif *vif,
 801				     struct ieee80211_bss_conf *bss_conf,
 802				     u64 changed)
 803{
 804	struct wcn36xx *wcn = hw->priv;
 805	struct sk_buff *skb = NULL;
 806	u16 tim_off, tim_len;
 807	enum wcn36xx_hal_link_state link_state;
 808	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 809
 810	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%llx\n",
 811		    vif, changed);
 812
 813	mutex_lock(&wcn->conf_mutex);
 814
 815	if (changed & BSS_CHANGED_BEACON_INFO) {
 816		wcn36xx_dbg(WCN36XX_DBG_MAC,
 817			    "mac bss changed dtim period %d\n",
 818			    bss_conf->dtim_period);
 819
 820		vif_priv->dtim_period = bss_conf->dtim_period;
 821	}
 822
 823	if (changed & BSS_CHANGED_BSSID) {
 824		wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
 825			    bss_conf->bssid);
 826
 827		if (!is_zero_ether_addr(bss_conf->bssid)) {
 828			vif_priv->is_joining = true;
 829			vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 830			wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 831						WCN36XX_HAL_LINK_PREASSOC_STATE);
 832			wcn36xx_smd_join(wcn, bss_conf->bssid,
 833					 vif->addr, WCN36XX_HW_CHANNEL(wcn));
 834			wcn36xx_smd_config_bss(wcn, vif, NULL,
 835					       bss_conf->bssid, false);
 836		} else {
 837			vif_priv->is_joining = false;
 838			wcn36xx_smd_delete_bss(wcn, vif);
 839			wcn36xx_smd_set_link_st(wcn, bss_conf->bssid, vif->addr,
 840						WCN36XX_HAL_LINK_IDLE_STATE);
 841			vif_priv->encrypt_type = WCN36XX_HAL_ED_NONE;
 842		}
 843	}
 844
 845	if (changed & BSS_CHANGED_SSID) {
 846		wcn36xx_dbg(WCN36XX_DBG_MAC,
 847			    "mac bss changed ssid\n");
 848		wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
 849				 vif->cfg.ssid, vif->cfg.ssid_len);
 850
 851		vif_priv->ssid.length = vif->cfg.ssid_len;
 852		memcpy(&vif_priv->ssid.ssid,
 853		       vif->cfg.ssid,
 854		       vif->cfg.ssid_len);
 855	}
 856
 857	if (changed & BSS_CHANGED_ASSOC) {
 858		vif_priv->is_joining = false;
 859		if (vif->cfg.assoc) {
 860			struct ieee80211_sta *sta;
 861			struct wcn36xx_sta *sta_priv;
 862
 863			wcn36xx_dbg(WCN36XX_DBG_MAC,
 864				    "mac assoc bss %pM vif %pM AID=%d\n",
 865				     bss_conf->bssid,
 866				     vif->addr,
 867				     vif->cfg.aid);
 868
 869			vif_priv->sta_assoc = true;
 870
 871			/*
 872			 * Holding conf_mutex ensures mutal exclusion with
 873			 * wcn36xx_sta_remove() and as such ensures that sta
 874			 * won't be freed while we're operating on it. As such
 875			 * we do not need to hold the rcu_read_lock().
 876			 */
 877			sta = ieee80211_find_sta(vif, bss_conf->bssid);
 878			if (!sta) {
 879				wcn36xx_err("sta %pM is not found\n",
 880					      bss_conf->bssid);
 881				goto out;
 882			}
 883			sta_priv = wcn36xx_sta_to_priv(sta);
 884
 885			wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
 886
 887			wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
 888				vif->addr,
 889				WCN36XX_HAL_LINK_POSTASSOC_STATE);
 890			wcn36xx_smd_config_bss(wcn, vif, sta,
 891					       bss_conf->bssid,
 892					       true);
 893			sta_priv->aid = vif->cfg.aid;
 894			/*
 895			 * config_sta must be called from  because this is the
 896			 * place where AID is available.
 897			 */
 898			wcn36xx_smd_config_sta(wcn, vif, sta);
 899			if (vif->type == NL80211_IFTYPE_STATION)
 900				wcn36xx_smd_add_beacon_filter(wcn, vif);
 901			wcn36xx_enable_keep_alive_null_packet(wcn, vif);
 902		} else {
 903			wcn36xx_dbg(WCN36XX_DBG_MAC,
 904				    "disassociated bss %pM vif %pM AID=%d\n",
 905				    bss_conf->bssid,
 906				    vif->addr,
 907				    vif->cfg.aid);
 908			vif_priv->sta_assoc = false;
 909			wcn36xx_smd_set_link_st(wcn,
 910						bss_conf->bssid,
 911						vif->addr,
 912						WCN36XX_HAL_LINK_IDLE_STATE);
 913		}
 914	}
 915
 916	if (changed & BSS_CHANGED_AP_PROBE_RESP) {
 917		wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
 918		skb = ieee80211_proberesp_get(hw, vif);
 919		if (!skb) {
 920			wcn36xx_err("failed to alloc probereq skb\n");
 921			goto out;
 922		}
 923
 924		wcn36xx_smd_update_proberesp_tmpl(wcn, vif, skb);
 925		dev_kfree_skb(skb);
 926	}
 927
 928	if (changed & BSS_CHANGED_BEACON_ENABLED ||
 929	    changed & BSS_CHANGED_BEACON) {
 930		wcn36xx_dbg(WCN36XX_DBG_MAC,
 931			    "mac bss changed beacon enabled %d\n",
 932			    bss_conf->enable_beacon);
 933
 934		if (bss_conf->enable_beacon) {
 935			vif_priv->dtim_period = bss_conf->dtim_period;
 936			vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
 937			wcn36xx_smd_config_bss(wcn, vif, NULL,
 938					       vif->addr, false);
 939			skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
 940						       &tim_len, 0);
 941			if (!skb) {
 942				wcn36xx_err("failed to alloc beacon skb\n");
 943				goto out;
 944			}
 945			wcn36xx_smd_send_beacon(wcn, vif, skb, tim_off, 0);
 946			dev_kfree_skb(skb);
 947
 948			if (vif->type == NL80211_IFTYPE_ADHOC ||
 949			    vif->type == NL80211_IFTYPE_MESH_POINT)
 950				link_state = WCN36XX_HAL_LINK_IBSS_STATE;
 951			else
 952				link_state = WCN36XX_HAL_LINK_AP_STATE;
 953
 954			wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 955						link_state);
 956		} else {
 957			wcn36xx_smd_delete_bss(wcn, vif);
 958			wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
 959						WCN36XX_HAL_LINK_IDLE_STATE);
 960		}
 961	}
 962out:
 963
 964	mutex_unlock(&wcn->conf_mutex);
 965}
 966
 967/* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
 968static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 969{
 970	struct wcn36xx *wcn = hw->priv;
 971	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
 972
 973	mutex_lock(&wcn->conf_mutex);
 974	wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
 975	mutex_unlock(&wcn->conf_mutex);
 976
 977	return 0;
 978}
 979
 980static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
 981				     struct ieee80211_vif *vif)
 982{
 983	struct wcn36xx *wcn = hw->priv;
 984	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 985	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
 986
 987	mutex_lock(&wcn->conf_mutex);
 988
 989	list_del(&vif_priv->list);
 990	wcn36xx_smd_delete_sta_self(wcn, vif->addr);
 991
 992	mutex_unlock(&wcn->conf_mutex);
 993}
 994
 995static int wcn36xx_add_interface(struct ieee80211_hw *hw,
 996				 struct ieee80211_vif *vif)
 997{
 998	struct wcn36xx *wcn = hw->priv;
 999	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1000
1001	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
1002		    vif, vif->type);
1003
1004	if (!(NL80211_IFTYPE_STATION == vif->type ||
1005	      NL80211_IFTYPE_AP == vif->type ||
1006	      NL80211_IFTYPE_ADHOC == vif->type ||
1007	      NL80211_IFTYPE_MESH_POINT == vif->type)) {
1008		wcn36xx_warn("Unsupported interface type requested: %d\n",
1009			     vif->type);
1010		return -EOPNOTSUPP;
1011	}
1012
1013	mutex_lock(&wcn->conf_mutex);
1014
1015	vif_priv->bss_index = WCN36XX_HAL_BSS_INVALID_IDX;
1016	INIT_LIST_HEAD(&vif_priv->sta_list);
1017	list_add(&vif_priv->list, &wcn->vif_list);
1018	wcn36xx_smd_add_sta_self(wcn, vif);
1019
1020	mutex_unlock(&wcn->conf_mutex);
1021
1022	return 0;
1023}
1024
1025static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1026			   struct ieee80211_sta *sta)
1027{
1028	struct wcn36xx *wcn = hw->priv;
1029	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1030	struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1031	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
1032		    vif, sta->addr);
1033
1034	mutex_lock(&wcn->conf_mutex);
1035
1036	spin_lock_init(&sta_priv->ampdu_lock);
1037	sta_priv->vif = vif_priv;
1038	list_add(&sta_priv->list, &vif_priv->sta_list);
1039
1040	/*
1041	 * For STA mode HW will be configured on BSS_CHANGED_ASSOC because
1042	 * at this stage AID is not available yet.
1043	 */
1044	if (NL80211_IFTYPE_STATION != vif->type) {
1045		wcn36xx_update_allowed_rates(sta, WCN36XX_BAND(wcn));
1046		sta_priv->aid = sta->aid;
1047		wcn36xx_smd_config_sta(wcn, vif, sta);
1048	}
1049
1050	mutex_unlock(&wcn->conf_mutex);
1051
1052	return 0;
1053}
1054
1055static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
1056			      struct ieee80211_vif *vif,
1057			      struct ieee80211_sta *sta)
1058{
1059	struct wcn36xx *wcn = hw->priv;
1060	struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
1061
1062	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
1063		    vif, sta->addr, sta_priv->sta_index);
1064
1065	mutex_lock(&wcn->conf_mutex);
1066
1067	list_del(&sta_priv->list);
1068	wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
1069	sta_priv->vif = NULL;
1070
1071	mutex_unlock(&wcn->conf_mutex);
1072
1073	return 0;
1074}
1075
1076#ifdef CONFIG_PM
1077
1078static struct ieee80211_vif *wcn36xx_get_first_assoc_vif(struct wcn36xx *wcn)
1079{
1080	struct wcn36xx_vif *vif_priv = NULL;
1081	struct ieee80211_vif *vif = NULL;
1082
1083	list_for_each_entry(vif_priv, &wcn->vif_list, list) {
1084		if (vif_priv->sta_assoc) {
1085			vif = wcn36xx_priv_to_vif(vif_priv);
1086			break;
1087		}
1088	}
1089	return vif;
1090}
1091
1092static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
1093{
1094	struct wcn36xx *wcn = hw->priv;
1095	struct ieee80211_vif *vif = NULL;
1096	int ret = 0;
1097
1098	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
1099
1100	mutex_lock(&wcn->conf_mutex);
1101
1102	vif = wcn36xx_get_first_assoc_vif(wcn);
1103	if (vif) {
1104		ret = wcn36xx_smd_arp_offload(wcn, vif, true);
1105		if (ret)
1106			goto out;
1107		ret = wcn36xx_smd_ipv6_ns_offload(wcn, vif, true);
1108		if (ret)
1109			goto out;
1110		ret = wcn36xx_smd_gtk_offload(wcn, vif, true);
1111		if (ret)
1112			goto out;
1113		ret = wcn36xx_smd_set_power_params(wcn, true);
1114		if (ret)
1115			goto out;
1116		ret = wcn36xx_smd_wlan_host_suspend_ind(wcn);
1117	}
1118
1119	/* Disable IRQ, we don't want to handle any packet before mac80211 is
1120	 * resumed and ready to receive packets.
1121	 */
1122	disable_irq(wcn->tx_irq);
1123	disable_irq(wcn->rx_irq);
1124
1125out:
1126	mutex_unlock(&wcn->conf_mutex);
1127	return ret;
1128}
1129
1130static int wcn36xx_resume(struct ieee80211_hw *hw)
1131{
1132	struct wcn36xx *wcn = hw->priv;
1133	struct ieee80211_vif *vif = NULL;
1134
1135	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
1136
1137	mutex_lock(&wcn->conf_mutex);
1138	vif = wcn36xx_get_first_assoc_vif(wcn);
1139	if (vif) {
1140		wcn36xx_smd_host_resume(wcn);
1141		wcn36xx_smd_set_power_params(wcn, false);
1142		wcn36xx_smd_gtk_offload_get_info(wcn, vif);
1143		wcn36xx_smd_gtk_offload(wcn, vif, false);
1144		wcn36xx_smd_ipv6_ns_offload(wcn, vif, false);
1145		wcn36xx_smd_arp_offload(wcn, vif, false);
1146	}
1147
1148	enable_irq(wcn->tx_irq);
1149	enable_irq(wcn->rx_irq);
1150
1151	mutex_unlock(&wcn->conf_mutex);
1152
1153	return 0;
1154}
1155
1156static void wcn36xx_set_rekey_data(struct ieee80211_hw *hw,
1157				   struct ieee80211_vif *vif,
1158				   struct cfg80211_gtk_rekey_data *data)
1159{
1160	struct wcn36xx *wcn = hw->priv;
1161	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1162
1163	mutex_lock(&wcn->conf_mutex);
1164
1165	memcpy(vif_priv->rekey_data.kek, data->kek, NL80211_KEK_LEN);
1166	memcpy(vif_priv->rekey_data.kck, data->kck, NL80211_KCK_LEN);
1167	vif_priv->rekey_data.replay_ctr =
1168		cpu_to_le64(be64_to_cpup((__be64 *)data->replay_ctr));
1169	vif_priv->rekey_data.valid = true;
1170
1171	mutex_unlock(&wcn->conf_mutex);
1172}
1173
1174#endif
1175
1176static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
1177		    struct ieee80211_vif *vif,
1178		    struct ieee80211_ampdu_params *params)
1179{
1180	struct wcn36xx *wcn = hw->priv;
1181	struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(params->sta);
1182	struct ieee80211_sta *sta = params->sta;
1183	enum ieee80211_ampdu_mlme_action action = params->action;
1184	u16 tid = params->tid;
1185	u16 *ssn = &params->ssn;
1186	int ret = 0;
1187	int session;
1188
1189	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
1190		    action, tid);
1191
1192	mutex_lock(&wcn->conf_mutex);
1193
1194	switch (action) {
1195	case IEEE80211_AMPDU_RX_START:
1196		sta_priv->tid = tid;
1197		session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
1198						     get_sta_index(vif, sta_priv));
1199		if (session < 0) {
1200			ret = session;
1201			goto out;
1202		}
1203		wcn36xx_smd_add_ba(wcn, session);
1204		break;
1205	case IEEE80211_AMPDU_RX_STOP:
1206		wcn36xx_smd_del_ba(wcn, tid, 0, get_sta_index(vif, sta_priv));
1207		break;
1208	case IEEE80211_AMPDU_TX_START:
1209		spin_lock_bh(&sta_priv->ampdu_lock);
1210		sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
1211		spin_unlock_bh(&sta_priv->ampdu_lock);
1212
1213		/* Replace the mac80211 ssn with the firmware one */
1214		wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu ssn = %u\n", *ssn);
1215		wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv), tid, ssn);
1216		wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu fw-ssn = %u\n", *ssn);
1217
1218		/* Start BA session */
1219		session = wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
1220						     get_sta_index(vif, sta_priv));
1221		if (session < 0) {
1222			ret = session;
1223			goto out;
1224		}
1225		ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
1226		break;
1227	case IEEE80211_AMPDU_TX_OPERATIONAL:
1228		spin_lock_bh(&sta_priv->ampdu_lock);
1229		sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_OPERATIONAL;
1230		spin_unlock_bh(&sta_priv->ampdu_lock);
1231
1232		break;
1233	case IEEE80211_AMPDU_TX_STOP_FLUSH:
1234	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1235	case IEEE80211_AMPDU_TX_STOP_CONT:
1236		spin_lock_bh(&sta_priv->ampdu_lock);
1237		sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_NONE;
1238		spin_unlock_bh(&sta_priv->ampdu_lock);
1239
1240		wcn36xx_smd_del_ba(wcn, tid, 1, get_sta_index(vif, sta_priv));
1241		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1242		break;
1243	default:
1244		wcn36xx_err("Unknown AMPDU action\n");
1245	}
1246
1247out:
1248	mutex_unlock(&wcn->conf_mutex);
1249
1250	return ret;
1251}
1252
1253#if IS_ENABLED(CONFIG_IPV6)
1254static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw,
1255				     struct ieee80211_vif *vif,
1256				     struct inet6_dev *idev)
1257{
1258	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
1259	struct inet6_ifaddr *ifa;
1260	int idx = 0;
1261
1262	memset(vif_priv->tentative_addrs, 0, sizeof(vif_priv->tentative_addrs));
1263
1264	read_lock_bh(&idev->lock);
1265	list_for_each_entry(ifa, &idev->addr_list, if_list) {
1266		vif_priv->target_ipv6_addrs[idx] = ifa->addr;
1267		if (ifa->flags & IFA_F_TENTATIVE)
1268			__set_bit(idx, vif_priv->tentative_addrs);
1269		idx++;
1270		if (idx >= WCN36XX_HAL_IPV6_OFFLOAD_ADDR_MAX)
1271			break;
1272		wcn36xx_dbg(WCN36XX_DBG_MAC, "%pI6 %s\n", &ifa->addr,
1273			    (ifa->flags & IFA_F_TENTATIVE) ? "tentative" : NULL);
1274	}
1275	read_unlock_bh(&idev->lock);
1276
1277	vif_priv->num_target_ipv6_addrs = idx;
1278}
1279#endif
1280
1281static void wcn36xx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1282			  u32 queues, bool drop)
1283{
1284	struct wcn36xx *wcn = hw->priv;
1285
1286	if (wcn36xx_dxe_tx_flush(wcn)) {
1287		wcn36xx_err("Failed to flush hardware tx queues\n");
1288	}
1289}
1290
1291static int wcn36xx_get_survey(struct ieee80211_hw *hw, int idx,
1292			      struct survey_info *survey)
1293{
1294	struct wcn36xx *wcn = hw->priv;
1295	struct ieee80211_supported_band *sband;
1296	struct wcn36xx_chan_survey *chan_survey;
1297	int band_idx;
1298	unsigned long flags;
1299
1300	sband = wcn->hw->wiphy->bands[NL80211_BAND_2GHZ];
1301	band_idx = idx;
1302	if (band_idx >= sband->n_channels) {
1303		band_idx -= sband->n_channels;
1304		sband = wcn->hw->wiphy->bands[NL80211_BAND_5GHZ];
1305	}
1306
1307	if (!sband || band_idx >= sband->n_channels)
1308		return -ENOENT;
1309
1310	spin_lock_irqsave(&wcn->survey_lock, flags);
1311
1312	chan_survey = &wcn->chan_survey[idx];
1313	survey->channel = &sband->channels[band_idx];
1314	survey->noise = chan_survey->rssi - chan_survey->snr;
1315	survey->filled = 0;
1316
1317	if (chan_survey->rssi > -100 && chan_survey->rssi < 0)
1318		survey->filled |= SURVEY_INFO_NOISE_DBM;
1319
1320	if (survey->channel == wcn->channel)
1321		survey->filled |= SURVEY_INFO_IN_USE;
1322
1323	spin_unlock_irqrestore(&wcn->survey_lock, flags);
1324
1325	wcn36xx_dbg(WCN36XX_DBG_MAC,
1326		    "ch %d rssi %d snr %d noise %d filled %x freq %d\n",
1327		    HW_VALUE_CHANNEL(survey->channel->hw_value),
1328		    chan_survey->rssi, chan_survey->snr, survey->noise,
1329		    survey->filled, survey->channel->center_freq);
1330
1331	return 0;
1332}
1333
1334static void wcn36xx_sta_statistics(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1335				   struct ieee80211_sta *sta, struct station_info *sinfo)
1336{
1337	struct wcn36xx *wcn;
1338	u8 sta_index;
1339	int status;
1340
1341	wcn = hw->priv;
1342	sta_index = get_sta_index(vif, wcn36xx_sta_to_priv(sta));
1343	status = wcn36xx_smd_get_stats(wcn, sta_index, HAL_GLOBAL_CLASS_A_STATS_INFO, sinfo);
1344
1345	if (status)
1346		wcn36xx_err("wcn36xx_smd_get_stats failed\n");
1347}
1348
1349static const struct ieee80211_ops wcn36xx_ops = {
 
 
 
 
1350	.start			= wcn36xx_start,
1351	.stop			= wcn36xx_stop,
1352	.add_interface		= wcn36xx_add_interface,
1353	.remove_interface	= wcn36xx_remove_interface,
1354#ifdef CONFIG_PM
1355	.suspend		= wcn36xx_suspend,
1356	.resume			= wcn36xx_resume,
1357	.set_rekey_data		= wcn36xx_set_rekey_data,
1358#endif
1359	.config			= wcn36xx_config,
1360	.prepare_multicast	= wcn36xx_prepare_multicast,
1361	.configure_filter       = wcn36xx_configure_filter,
1362	.tx			= wcn36xx_tx,
1363	.wake_tx_queue		= ieee80211_handle_wake_tx_queue,
1364	.set_key		= wcn36xx_set_key,
1365	.hw_scan		= wcn36xx_hw_scan,
1366	.cancel_hw_scan		= wcn36xx_cancel_hw_scan,
1367	.sw_scan_start		= wcn36xx_sw_scan_start,
1368	.sw_scan_complete	= wcn36xx_sw_scan_complete,
1369	.bss_info_changed	= wcn36xx_bss_info_changed,
1370	.set_rts_threshold	= wcn36xx_set_rts_threshold,
1371	.sta_add		= wcn36xx_sta_add,
1372	.sta_remove		= wcn36xx_sta_remove,
1373	.sta_statistics		= wcn36xx_sta_statistics,
1374	.ampdu_action		= wcn36xx_ampdu_action,
1375#if IS_ENABLED(CONFIG_IPV6)
1376	.ipv6_addr_change	= wcn36xx_ipv6_addr_change,
1377#endif
1378	.flush			= wcn36xx_flush,
1379	.get_survey		= wcn36xx_get_survey,
1380
1381	CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
1382};
1383
1384static void
1385wcn36xx_set_ieee80211_vht_caps(struct ieee80211_sta_vht_cap *vht_cap)
1386{
1387	vht_cap->vht_supported = true;
1388
1389	vht_cap->cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 |
1390			IEEE80211_VHT_CAP_SHORT_GI_80 |
1391			IEEE80211_VHT_CAP_RXSTBC_1 |
1392			IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
1393			IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
1394			3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT |
1395			7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
1396
1397	vht_cap->vht_mcs.rx_mcs_map =
1398		cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 |
1399			    IEEE80211_VHT_MCS_NOT_SUPPORTED << 2 |
1400			    IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
1401			    IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
1402			    IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
1403			    IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
1404			    IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
1405			    IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
1406
1407	vht_cap->vht_mcs.rx_highest = cpu_to_le16(433);
1408	vht_cap->vht_mcs.tx_highest = vht_cap->vht_mcs.rx_highest;
1409
1410	vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
1411}
1412
1413static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
1414{
1415	static const u32 cipher_suites[] = {
1416		WLAN_CIPHER_SUITE_WEP40,
1417		WLAN_CIPHER_SUITE_WEP104,
1418		WLAN_CIPHER_SUITE_TKIP,
1419		WLAN_CIPHER_SUITE_CCMP,
1420	};
1421
1422	ieee80211_hw_set(wcn->hw, TIMING_BEACON_ONLY);
1423	ieee80211_hw_set(wcn->hw, AMPDU_AGGREGATION);
1424	ieee80211_hw_set(wcn->hw, SUPPORTS_PS);
1425	ieee80211_hw_set(wcn->hw, SIGNAL_DBM);
1426	ieee80211_hw_set(wcn->hw, HAS_RATE_CONTROL);
1427	ieee80211_hw_set(wcn->hw, SINGLE_SCAN_ON_ALL_BANDS);
1428	ieee80211_hw_set(wcn->hw, REPORTS_TX_ACK_STATUS);
1429
1430	wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1431		BIT(NL80211_IFTYPE_AP) |
1432		BIT(NL80211_IFTYPE_ADHOC) |
1433		BIT(NL80211_IFTYPE_MESH_POINT);
1434
1435	wcn->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wcn_band_2ghz;
1436	if (wcn->rf_id != RF_IRIS_WCN3620)
1437		wcn->hw->wiphy->bands[NL80211_BAND_5GHZ] = &wcn_band_5ghz;
1438
1439	if (wcn->rf_id == RF_IRIS_WCN3680)
1440		wcn36xx_set_ieee80211_vht_caps(&wcn_band_5ghz.vht_cap);
1441
1442	wcn->hw->wiphy->max_scan_ssids = WCN36XX_MAX_SCAN_SSIDS;
1443	wcn->hw->wiphy->max_scan_ie_len = WCN36XX_MAX_SCAN_IE_LEN;
1444
1445	wcn->hw->wiphy->cipher_suites = cipher_suites;
1446	wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1447
1448#ifdef CONFIG_PM
1449	wcn->hw->wiphy->wowlan = &wowlan_support;
1450#endif
1451
1452	wcn->hw->max_listen_interval = 200;
1453
1454	wcn->hw->queues = 4;
1455
1456	SET_IEEE80211_DEV(wcn->hw, wcn->dev);
1457
1458	wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
1459	wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
1460
1461	wiphy_ext_feature_set(wcn->hw->wiphy,
1462			      NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1463
1464	return 0;
1465}
1466
1467static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
1468					  struct platform_device *pdev)
1469{
1470	struct device_node *mmio_node;
1471	struct device_node *iris_node;
1472	int index;
1473	int ret;
1474
1475	/* Set TX IRQ */
1476	ret = platform_get_irq_byname(pdev, "tx");
1477	if (ret < 0)
1478		return ret;
1479	wcn->tx_irq = ret;
1480
1481	/* Set RX IRQ */
1482	ret = platform_get_irq_byname(pdev, "rx");
1483	if (ret < 0)
1484		return ret;
1485	wcn->rx_irq = ret;
1486
1487	/* Acquire SMSM tx enable handle */
1488	wcn->tx_enable_state = qcom_smem_state_get(&pdev->dev,
1489			"tx-enable", &wcn->tx_enable_state_bit);
1490	if (IS_ERR(wcn->tx_enable_state)) {
1491		wcn36xx_err("failed to get tx-enable state\n");
1492		return PTR_ERR(wcn->tx_enable_state);
1493	}
1494
1495	/* Acquire SMSM tx rings empty handle */
1496	wcn->tx_rings_empty_state = qcom_smem_state_get(&pdev->dev,
1497			"tx-rings-empty", &wcn->tx_rings_empty_state_bit);
1498	if (IS_ERR(wcn->tx_rings_empty_state)) {
1499		wcn36xx_err("failed to get tx-rings-empty state\n");
1500		return PTR_ERR(wcn->tx_rings_empty_state);
1501	}
1502
1503	mmio_node = of_parse_phandle(pdev->dev.parent->of_node, "qcom,mmio", 0);
1504	if (!mmio_node) {
1505		wcn36xx_err("failed to acquire qcom,mmio reference\n");
1506		return -EINVAL;
1507	}
1508
1509	wcn->is_pronto = !!of_device_is_compatible(mmio_node, "qcom,pronto");
1510	wcn->is_pronto_v3 = !!of_device_is_compatible(mmio_node, "qcom,pronto-v3-pil");
1511
1512	/* Map the CCU memory */
1513	index = of_property_match_string(mmio_node, "reg-names", "ccu");
1514	wcn->ccu_base = of_iomap(mmio_node, index);
1515	if (!wcn->ccu_base) {
1516		wcn36xx_err("failed to map ccu memory\n");
1517		ret = -ENOMEM;
1518		goto put_mmio_node;
1519	}
1520
1521	/* Map the DXE memory */
1522	index = of_property_match_string(mmio_node, "reg-names", "dxe");
1523	wcn->dxe_base = of_iomap(mmio_node, index);
1524	if (!wcn->dxe_base) {
1525		wcn36xx_err("failed to map dxe memory\n");
1526		ret = -ENOMEM;
1527		goto unmap_ccu;
1528	}
1529
1530	/* External RF module */
1531	iris_node = of_get_child_by_name(mmio_node, "iris");
1532	if (iris_node) {
1533		if (of_device_is_compatible(iris_node, "qcom,wcn3620"))
1534			wcn->rf_id = RF_IRIS_WCN3620;
1535		if (of_device_is_compatible(iris_node, "qcom,wcn3660") ||
1536		    of_device_is_compatible(iris_node, "qcom,wcn3660b"))
1537			wcn->rf_id = RF_IRIS_WCN3660;
1538		if (of_device_is_compatible(iris_node, "qcom,wcn3680"))
1539			wcn->rf_id = RF_IRIS_WCN3680;
1540		of_node_put(iris_node);
1541	}
1542
1543	of_node_put(mmio_node);
1544	return 0;
1545
1546unmap_ccu:
1547	iounmap(wcn->ccu_base);
1548put_mmio_node:
1549	of_node_put(mmio_node);
1550	return ret;
1551}
1552
1553static int wcn36xx_probe(struct platform_device *pdev)
1554{
1555	struct ieee80211_hw *hw;
1556	struct wcn36xx *wcn;
1557	void *wcnss;
1558	int ret;
1559	const u8 *addr;
1560	int n_channels;
1561
1562	wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
1563
1564	wcnss = dev_get_drvdata(pdev->dev.parent);
1565
1566	hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
1567	if (!hw) {
1568		wcn36xx_err("failed to alloc hw\n");
1569		ret = -ENOMEM;
1570		goto out_err;
1571	}
1572	platform_set_drvdata(pdev, hw);
1573	wcn = hw->priv;
1574	wcn->hw = hw;
1575	wcn->dev = &pdev->dev;
1576	wcn->first_boot = true;
1577	mutex_init(&wcn->conf_mutex);
1578	mutex_init(&wcn->hal_mutex);
1579	mutex_init(&wcn->scan_lock);
1580	__skb_queue_head_init(&wcn->amsdu);
1581
1582	wcn->hal_buf = devm_kmalloc(wcn->dev, WCN36XX_HAL_BUF_SIZE, GFP_KERNEL);
1583	if (!wcn->hal_buf) {
1584		ret = -ENOMEM;
1585		goto out_wq;
1586	}
1587
1588	n_channels = wcn_band_2ghz.n_channels + wcn_band_5ghz.n_channels;
1589	wcn->chan_survey = devm_kmalloc(wcn->dev, n_channels, GFP_KERNEL);
1590	if (!wcn->chan_survey) {
1591		ret = -ENOMEM;
1592		goto out_wq;
1593	}
1594
1595	ret = dma_set_mask_and_coherent(wcn->dev, DMA_BIT_MASK(32));
1596	if (ret < 0) {
1597		wcn36xx_err("failed to set DMA mask: %d\n", ret);
1598		goto out_wq;
1599	}
1600
1601	wcn->nv_file = WLAN_NV_FILE;
1602	ret = of_property_read_string(wcn->dev->parent->of_node, "firmware-name", &wcn->nv_file);
1603	if (ret < 0 && ret != -EINVAL) {
1604		wcn36xx_err("failed to read \"firmware-name\" property: %d\n", ret);
1605		goto out_wq;
1606	}
1607
1608	wcn->smd_channel = qcom_wcnss_open_channel(wcnss, "WLAN_CTRL", wcn36xx_smd_rsp_process, hw);
1609	if (IS_ERR(wcn->smd_channel)) {
1610		wcn36xx_err("failed to open WLAN_CTRL channel\n");
1611		ret = PTR_ERR(wcn->smd_channel);
1612		goto out_wq;
1613	}
1614
1615	addr = of_get_property(pdev->dev.of_node, "local-mac-address", &ret);
1616	if (addr && ret != ETH_ALEN) {
1617		wcn36xx_err("invalid local-mac-address\n");
1618		ret = -EINVAL;
1619		goto out_destroy_ept;
1620	} else if (addr) {
1621		wcn36xx_info("mac address: %pM\n", addr);
1622		SET_IEEE80211_PERM_ADDR(wcn->hw, addr);
1623	}
1624
1625	ret = wcn36xx_platform_get_resources(wcn, pdev);
1626	if (ret)
1627		goto out_destroy_ept;
1628
1629	wcn36xx_init_ieee80211(wcn);
1630	ret = ieee80211_register_hw(wcn->hw);
1631	if (ret)
1632		goto out_unmap;
1633
1634	return 0;
1635
1636out_unmap:
1637	iounmap(wcn->ccu_base);
1638	iounmap(wcn->dxe_base);
1639out_destroy_ept:
1640	rpmsg_destroy_ept(wcn->smd_channel);
1641out_wq:
1642	ieee80211_free_hw(hw);
1643out_err:
1644	return ret;
1645}
1646
1647static void wcn36xx_remove(struct platform_device *pdev)
1648{
1649	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
1650	struct wcn36xx *wcn = hw->priv;
1651	wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
1652
1653	release_firmware(wcn->nv);
1654
1655	ieee80211_unregister_hw(hw);
1656
1657	qcom_smem_state_put(wcn->tx_enable_state);
1658	qcom_smem_state_put(wcn->tx_rings_empty_state);
1659
1660	rpmsg_destroy_ept(wcn->smd_channel);
1661
1662	iounmap(wcn->dxe_base);
1663	iounmap(wcn->ccu_base);
1664
1665	__skb_queue_purge(&wcn->amsdu);
1666
1667	mutex_destroy(&wcn->hal_mutex);
1668	ieee80211_free_hw(hw);
1669}
1670
1671static const struct of_device_id wcn36xx_of_match[] = {
1672	{ .compatible = "qcom,wcnss-wlan" },
1673	{}
1674};
1675MODULE_DEVICE_TABLE(of, wcn36xx_of_match);
1676
1677static struct platform_driver wcn36xx_driver = {
1678	.probe      = wcn36xx_probe,
1679	.remove_new = wcn36xx_remove,
1680	.driver         = {
1681		.name   = "wcn36xx",
1682		.of_match_table = wcn36xx_of_match,
1683	},
1684};
1685
1686module_platform_driver(wcn36xx_driver);
1687
1688MODULE_DESCRIPTION("Qualcomm Atheros WCN3660/3680 wireless driver");
1689MODULE_LICENSE("Dual BSD/GPL");
1690MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
1691MODULE_FIRMWARE(WLAN_NV_FILE);