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/*
 * Copyright (c) 2005-2011 Atheros Communications Inc.
 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "mac.h"

#include <net/mac80211.h>
#include <linux/etherdevice.h>

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#include "hif.h"
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#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"

/**********/
/* Crypto */
/**********/

static int ath10k_send_key(struct ath10k_vif *arvif,
			   struct ieee80211_key_conf *key,
			   enum set_key_cmd cmd,
			   const u8 *macaddr)
{
	struct wmi_vdev_install_key_arg arg = {
		.vdev_id = arvif->vdev_id,
		.key_idx = key->keyidx,
		.key_len = key->keylen,
		.key_data = key->key,
		.macaddr = macaddr,
	};

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	lockdep_assert_held(&arvif->ar->conf_mutex);

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	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		arg.key_flags = WMI_KEY_PAIRWISE;
	else
		arg.key_flags = WMI_KEY_GROUP;

	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
		arg.key_cipher = WMI_CIPHER_AES_CCM;
		key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
		break;
	case WLAN_CIPHER_SUITE_TKIP:
		arg.key_cipher = WMI_CIPHER_TKIP;
		arg.key_txmic_len = 8;
		arg.key_rxmic_len = 8;
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
		arg.key_cipher = WMI_CIPHER_WEP;
		/* AP/IBSS mode requires self-key to be groupwise
		 * Otherwise pairwise key must be set */
		if (memcmp(macaddr, arvif->vif->addr, ETH_ALEN))
			arg.key_flags = WMI_KEY_PAIRWISE;
		break;
	default:
		ath10k_warn("cipher %d is not supported\n", key->cipher);
		return -EOPNOTSUPP;
	}

	if (cmd == DISABLE_KEY) {
		arg.key_cipher = WMI_CIPHER_NONE;
		arg.key_data = NULL;
	}

	return ath10k_wmi_vdev_install_key(arvif->ar, &arg);
}

static int ath10k_install_key(struct ath10k_vif *arvif,
			      struct ieee80211_key_conf *key,
			      enum set_key_cmd cmd,
			      const u8 *macaddr)
{
	struct ath10k *ar = arvif->ar;
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

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	INIT_COMPLETION(ar->install_key_done);

	ret = ath10k_send_key(arvif, key, cmd, macaddr);
	if (ret)
		return ret;

	ret = wait_for_completion_timeout(&ar->install_key_done, 3*HZ);
	if (ret == 0)
		return -ETIMEDOUT;

	return 0;
}

static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif,
					const u8 *addr)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int ret;
	int i;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer)
		return -ENOENT;

	for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) {
		if (arvif->wep_keys[i] == NULL)
			continue;

		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
					 addr);
		if (ret)
			return ret;

		peer->keys[i] = arvif->wep_keys[i];
	}

	return 0;
}

static int ath10k_clear_peer_keys(struct ath10k_vif *arvif,
				  const u8 *addr)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int first_errno = 0;
	int ret;
	int i;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer)
		return -ENOENT;

	for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
		if (peer->keys[i] == NULL)
			continue;

		ret = ath10k_install_key(arvif, peer->keys[i],
					 DISABLE_KEY, addr);
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
			ath10k_warn("could not remove peer wep key %d (%d)\n",
				    i, ret);

		peer->keys[i] = NULL;
	}

	return first_errno;
}

static int ath10k_clear_vdev_key(struct ath10k_vif *arvif,
				 struct ieee80211_key_conf *key)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	u8 addr[ETH_ALEN];
	int first_errno = 0;
	int ret;
	int i;

	lockdep_assert_held(&ar->conf_mutex);

	for (;;) {
		/* since ath10k_install_key we can't hold data_lock all the
		 * time, so we try to remove the keys incrementally */
		spin_lock_bh(&ar->data_lock);
		i = 0;
		list_for_each_entry(peer, &ar->peers, list) {
			for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
				if (peer->keys[i] == key) {
					memcpy(addr, peer->addr, ETH_ALEN);
					peer->keys[i] = NULL;
					break;
				}
			}

			if (i < ARRAY_SIZE(peer->keys))
				break;
		}
		spin_unlock_bh(&ar->data_lock);

		if (i == ARRAY_SIZE(peer->keys))
			break;

		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr);
		if (ret && first_errno == 0)
			first_errno = ret;

		if (ret)
			ath10k_warn("could not remove key for %pM\n", addr);
	}

	return first_errno;
}


/*********************/
/* General utilities */
/*********************/

static inline enum wmi_phy_mode
chan_to_phymode(const struct cfg80211_chan_def *chandef)
{
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

	switch (chandef->chan->band) {
	case IEEE80211_BAND_2GHZ:
		switch (chandef->width) {
		case NL80211_CHAN_WIDTH_20_NOHT:
			phymode = MODE_11G;
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NG_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NG_HT40;
			break;
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		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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		case NL80211_CHAN_WIDTH_80:
		case NL80211_CHAN_WIDTH_80P80:
		case NL80211_CHAN_WIDTH_160:
			phymode = MODE_UNKNOWN;
			break;
		}
		break;
	case IEEE80211_BAND_5GHZ:
		switch (chandef->width) {
		case NL80211_CHAN_WIDTH_20_NOHT:
			phymode = MODE_11A;
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NA_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NA_HT40;
			break;
		case NL80211_CHAN_WIDTH_80:
			phymode = MODE_11AC_VHT80;
			break;
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		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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		case NL80211_CHAN_WIDTH_80P80:
		case NL80211_CHAN_WIDTH_160:
			phymode = MODE_UNKNOWN;
			break;
		}
		break;
	default:
		break;
	}

	WARN_ON(phymode == MODE_UNKNOWN);
	return phymode;
}

static u8 ath10k_parse_mpdudensity(u8 mpdudensity)
{
/*
 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
 *   0 for no restriction
 *   1 for 1/4 us
 *   2 for 1/2 us
 *   3 for 1 us
 *   4 for 2 us
 *   5 for 4 us
 *   6 for 8 us
 *   7 for 16 us
 */
	switch (mpdudensity) {
	case 0:
		return 0;
	case 1:
	case 2:
	case 3:
	/* Our lower layer calculations limit our precision to
	   1 microsecond */
		return 1;
	case 4:
		return 2;
	case 5:
		return 4;
	case 6:
		return 8;
	case 7:
		return 16;
	default:
		return 0;
	}
}

static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_peer_create(ar, vdev_id, addr);
	if (ret)
		return ret;

	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
	if (ret)
		return ret;

	return 0;
}

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static int  ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
{
	if (value != 0xFFFFFFFF)
		value = min_t(u32, arvif->ar->hw->wiphy->rts_threshold,
			      ATH10K_RTS_MAX);

	return ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id,
					 WMI_VDEV_PARAM_RTS_THRESHOLD,
					 value);
}

static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
{
	if (value != 0xFFFFFFFF)
		value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
				ATH10K_FRAGMT_THRESHOLD_MIN,
				ATH10K_FRAGMT_THRESHOLD_MAX);

	return ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id,
					 WMI_VDEV_PARAM_FRAGMENTATION_THRESHOLD,
					 value);
}

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static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_peer_delete(ar, vdev_id, addr);
	if (ret)
		return ret;

	ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr);
	if (ret)
		return ret;

	return 0;
}

static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_peer *peer, *tmp;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
		if (peer->vdev_id != vdev_id)
			continue;

		ath10k_warn("removing stale peer %pM from vdev_id %d\n",
			    peer->addr, vdev_id);

		list_del(&peer->list);
		kfree(peer);
	}
	spin_unlock_bh(&ar->data_lock);
}

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static void ath10k_peer_cleanup_all(struct ath10k *ar)
{
	struct ath10k_peer *peer, *tmp;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
		list_del(&peer->list);
		kfree(peer);
	}
	spin_unlock_bh(&ar->data_lock);
}

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/************************/
/* Interface management */
/************************/

static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

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	ret = wait_for_completion_timeout(&ar->vdev_setup_done,
					  ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (ret == 0)
		return -ETIMEDOUT;

	return 0;
}

static int ath10k_vdev_start(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_conf *conf = &ar->hw->conf;
	struct ieee80211_channel *channel = conf->chandef.chan;
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	INIT_COMPLETION(ar->vdev_setup_done);

	arg.vdev_id = arvif->vdev_id;
	arg.dtim_period = arvif->dtim_period;
	arg.bcn_intval = arvif->beacon_interval;

	arg.channel.freq = channel->center_freq;

	arg.channel.band_center_freq1 = conf->chandef.center_freq1;

	arg.channel.mode = chan_to_phymode(&conf->chandef);

	arg.channel.min_power = channel->max_power * 3;
	arg.channel.max_power = channel->max_power * 4;
	arg.channel.max_reg_power = channel->max_reg_power * 4;
	arg.channel.max_antenna_gain = channel->max_antenna_gain;

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		arg.ssid = arvif->u.ap.ssid;
		arg.ssid_len = arvif->u.ap.ssid_len;
		arg.hidden_ssid = arvif->u.ap.hidden_ssid;
	} else if (arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
		arg.ssid = arvif->vif->bss_conf.ssid;
		arg.ssid_len = arvif->vif->bss_conf.ssid_len;
	}

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	ath10k_dbg(ATH10K_DBG_MAC,
		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

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	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
		ath10k_warn("WMI vdev start failed: ret %d\n", ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
		ath10k_warn("vdev setup failed %d\n", ret);
		return ret;
	}

	return ret;
}

static int ath10k_vdev_stop(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	INIT_COMPLETION(ar->vdev_setup_done);

	ret = ath10k_wmi_vdev_stop(ar, arvif->vdev_id);
	if (ret) {
		ath10k_warn("WMI vdev stop failed: ret %d\n", ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
		ath10k_warn("vdev setup failed %d\n", ret);
		return ret;
	}

	return ret;
}

static int ath10k_monitor_start(struct ath10k *ar, int vdev_id)
{
	struct ieee80211_channel *channel = ar->hw->conf.chandef.chan;
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
	arg.channel.band_center_freq1 = ar->hw->conf.chandef.center_freq1;

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
	arg.channel.mode = chan_to_phymode(&ar->hw->conf.chandef);

	arg.channel.min_power = channel->max_power * 3;
	arg.channel.max_power = channel->max_power * 4;
	arg.channel.max_reg_power = channel->max_reg_power * 4;
	arg.channel.max_antenna_gain = channel->max_antenna_gain;

	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
		ath10k_warn("Monitor vdev start failed: ret %d\n", ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
		ath10k_warn("Monitor vdev setup failed %d\n", ret);
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
		ath10k_warn("Monitor vdev up failed: %d\n", ret);
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;
	ar->monitor_enabled = true;

	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
		ath10k_warn("Monitor vdev stop failed: %d\n", ret);

	return ret;
}

static int ath10k_monitor_stop(struct ath10k *ar)
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
		ath10k_warn("Monitor vdev down failed: %d\n", ret);
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	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
		ath10k_warn("Monitor vdev stop failed: %d\n", ret);

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
		ath10k_warn("Monitor_down sync failed: %d\n", ret);

	ar->monitor_enabled = false;
	return ret;
}

static int ath10k_monitor_create(struct ath10k *ar)
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	if (ar->monitor_present) {
		ath10k_warn("Monitor mode already enabled\n");
		return 0;
	}

	bit = ffs(ar->free_vdev_map);
	if (bit == 0) {
		ath10k_warn("No free VDEV slots\n");
		return -ENOMEM;
	}

	ar->monitor_vdev_id = bit - 1;
	ar->free_vdev_map &= ~(1 << ar->monitor_vdev_id);

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
		ath10k_warn("WMI vdev monitor create failed: ret %d\n", ret);
		goto vdev_fail;
	}

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	ath10k_dbg(ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
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		   ar->monitor_vdev_id);

	ar->monitor_present = true;
	return 0;

vdev_fail:
	/*
	 * Restore the ID to the global map.
	 */
	ar->free_vdev_map |= 1 << (ar->monitor_vdev_id);
	return ret;
}

static int ath10k_monitor_destroy(struct ath10k *ar)
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	if (!ar->monitor_present)
		return 0;

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
		ath10k_warn("WMI vdev monitor delete failed: %d\n", ret);
		return ret;
	}

	ar->free_vdev_map |= 1 << (ar->monitor_vdev_id);
	ar->monitor_present = false;

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	ath10k_dbg(ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
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		   ar->monitor_vdev_id);
	return ret;
}

static void ath10k_control_beaconing(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info)
{
	int ret = 0;

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	lockdep_assert_held(&arvif->ar->conf_mutex);

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	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
		return;
	}

	arvif->tx_seq_no = 0x1000;

	ret = ath10k_vdev_start(arvif);
	if (ret)
		return;

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, 0, info->bssid);
	if (ret) {
		ath10k_warn("Failed to bring up VDEV: %d\n",
			    arvif->vdev_id);
		return;
	}
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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
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}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
	int ret = 0;

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	lockdep_assert_held(&arvif->ar->conf_mutex);

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	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
			ath10k_warn("Failed to delete IBSS self peer:%pM for VDEV:%d ret:%d\n",
				    self_peer, arvif->vdev_id, ret);

		if (is_zero_ether_addr(arvif->u.ibss.bssid))
			return;

		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id,
					 arvif->u.ibss.bssid);
		if (ret) {
			ath10k_warn("Failed to delete IBSS BSSID peer:%pM for VDEV:%d ret:%d\n",
				    arvif->u.ibss.bssid, arvif->vdev_id, ret);
			return;
		}

		memset(arvif->u.ibss.bssid, 0, ETH_ALEN);

		return;
	}

	ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer);
	if (ret) {
		ath10k_warn("Failed to create IBSS self peer:%pM for VDEV:%d ret:%d\n",
			    self_peer, arvif->vdev_id, ret);
		return;
	}

	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id,
					WMI_VDEV_PARAM_ATIM_WINDOW,
					ATH10K_DEFAULT_ATIM);
	if (ret)
		ath10k_warn("Failed to set IBSS ATIM for VDEV:%d ret:%d\n",
			    arvif->vdev_id, ret);
}

/*
 * Review this when mac80211 gains per-interface powersave support.
 */
static void ath10k_ps_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
	struct ath10k_generic_iter *ar_iter = data;
	struct ieee80211_conf *conf = &ar_iter->ar->hw->conf;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;

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	lockdep_assert_held(&arvif->ar->conf_mutex);

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	if (vif->type != NL80211_IFTYPE_STATION)
		return;

	if (conf->flags & IEEE80211_CONF_PS) {
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

		ret = ath10k_wmi_set_sta_ps_param(ar_iter->ar,
						  arvif->vdev_id,
						  param,
						  conf->dynamic_ps_timeout);
		if (ret) {
			ath10k_warn("Failed to set inactivity time for VDEV: %d\n",
				    arvif->vdev_id);
			return;
		}

		ar_iter->ret = ret;
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
		   arvif->vdev_id, psmode ? "enable" : "disable");

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	ar_iter->ret = ath10k_wmi_set_psmode(ar_iter->ar, arvif->vdev_id,
					     psmode);
	if (ar_iter->ret)
		ath10k_warn("Failed to set PS Mode: %d for VDEV: %d\n",
			    psmode, arvif->vdev_id);
}

/**********************/
/* Station management */
/**********************/

static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
				      struct ath10k_vif *arvif,
				      struct ieee80211_sta *sta,
				      struct ieee80211_bss_conf *bss_conf,
				      struct wmi_peer_assoc_complete_arg *arg)
{
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	lockdep_assert_held(&ar->conf_mutex);

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	memcpy(arg->addr, sta->addr, ETH_ALEN);
	arg->vdev_id = arvif->vdev_id;
	arg->peer_aid = sta->aid;
	arg->peer_flags |= WMI_PEER_AUTH;

	if (arvif->vdev_type == WMI_VDEV_TYPE_STA)
		/*
		 * Seems FW have problems with Power Save in STA
		 * mode when we setup this parameter to high (eg. 5).
		 * Often we see that FW don't send NULL (with clean P flags)
		 * frame even there is info about buffered frames in beacons.
		 * Sometimes we have to wait more than 10 seconds before FW
		 * will wakeup. Often sending one ping from AP to our device
		 * just fail (more than 50%).
		 *
		 * Seems setting this FW parameter to 1 couse FW
		 * will check every beacon and will wakup immediately
		 * after detection buffered data.
		 */
		arg->peer_listen_intval = 1;
	else
		arg->peer_listen_intval = ar->hw->conf.listen_interval;

	arg->peer_num_spatial_streams = 1;

	/*
	 * The assoc capabilities are available only in managed mode.
	 */
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && bss_conf)
		arg->peer_caps = bss_conf->assoc_capability;
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
				       struct ath10k_vif *arvif,
				       struct wmi_peer_assoc_complete_arg *arg)
{
	struct ieee80211_vif *vif = arvif->vif;
	struct ieee80211_bss_conf *info = &vif->bss_conf;
	struct cfg80211_bss *bss;
	const u8 *rsnie = NULL;
	const u8 *wpaie = NULL;

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	lockdep_assert_held(&ar->conf_mutex);

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	bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
			       info->bssid, NULL, 0, 0, 0);
	if (bss) {
		const struct cfg80211_bss_ies *ies;

		rcu_read_lock();
		rsnie = ieee80211_bss_get_ie(bss, WLAN_EID_RSN);

		ies = rcu_dereference(bss->ies);

		wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
				WLAN_OUI_TYPE_MICROSOFT_WPA,
				ies->data,
				ies->len);
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
		ath10k_dbg(ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

	if (wpaie) {
		ath10k_dbg(ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
		arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY;
	}
}

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
	struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
	const struct ieee80211_supported_band *sband;
	const struct ieee80211_rate *rates;
	u32 ratemask;
	int i;

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	lockdep_assert_held(&ar->conf_mutex);

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	sband = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band];
	ratemask = sta->supp_rates[ar->hw->conf.chandef.chan->band];
	rates = sband->bitrates;

	rateset->num_rates = 0;

	for (i = 0; i < 32; i++, ratemask >>= 1, rates++) {
		if (!(ratemask & 1))
			continue;

		rateset->rates[rateset->num_rates] = rates->hw_value;
		rateset->num_rates++;
	}
}

static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
				   struct ieee80211_sta *sta,
				   struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
	int smps;
	int i, n;

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	lockdep_assert_held(&ar->conf_mutex);

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	if (!ht_cap->ht_supported)
		return;

	arg->peer_flags |= WMI_PEER_HT;
	arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
				    ht_cap->ampdu_factor)) - 1;

	arg->peer_mpdu_density =
		ath10k_parse_mpdudensity(ht_cap->ampdu_density);

	arg->peer_ht_caps = ht_cap->cap;
	arg->peer_rate_caps |= WMI_RC_HT_FLAG;

	if (ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING)
		arg->peer_flags |= WMI_PEER_LDPC;

	if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) {
		arg->peer_flags |= WMI_PEER_40MHZ;
		arg->peer_rate_caps |= WMI_RC_CW40_FLAG;
	}

	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
		arg->peer_rate_caps |= WMI_RC_SGI_FLAG;

	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
		arg->peer_rate_caps |= WMI_RC_SGI_FLAG;

	if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) {
		arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG;
		arg->peer_flags |= WMI_PEER_STBC;
	}

	if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) {
		u32 stbc;
		stbc = ht_cap->cap & IEEE80211_HT_CAP_RX_STBC;
		stbc = stbc >> IEEE80211_HT_CAP_RX_STBC_SHIFT;
		stbc = stbc << WMI_RC_RX_STBC_FLAG_S;
		arg->peer_rate_caps |= stbc;
		arg->peer_flags |= WMI_PEER_STBC;
	}

	smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS;
	smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT;

	if (smps == WLAN_HT_CAP_SM_PS_STATIC) {
		arg->peer_flags |= WMI_PEER_SPATIAL_MUX;
		arg->peer_flags |= WMI_PEER_STATIC_MIMOPS;
	} else if (smps == WLAN_HT_CAP_SM_PS_DYNAMIC) {
		arg->peer_flags |= WMI_PEER_SPATIAL_MUX;
		arg->peer_flags |= WMI_PEER_DYN_MIMOPS;
	}

	if (ht_cap->mcs.rx_mask[1] && ht_cap->mcs.rx_mask[2])
		arg->peer_rate_caps |= WMI_RC_TS_FLAG;
	else if (ht_cap->mcs.rx_mask[1])
		arg->peer_rate_caps |= WMI_RC_DS_FLAG;

	for (i = 0, n = 0; i < IEEE80211_HT_MCS_MASK_LEN*8; i++)
		if (ht_cap->mcs.rx_mask[i/8] & (1 << i%8))
			arg->peer_ht_rates.rates[n++] = i;

	arg->peer_ht_rates.num_rates = n;
	arg->peer_num_spatial_streams = max((n+7) / 8, 1);

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	ath10k_dbg(ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
		   arg->addr,
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		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

static void ath10k_peer_assoc_h_qos_ap(struct ath10k *ar,
				       struct ath10k_vif *arvif,
				       struct ieee80211_sta *sta,
				       struct ieee80211_bss_conf *bss_conf,
				       struct wmi_peer_assoc_complete_arg *arg)
{
	u32 uapsd = 0;
	u32 max_sp = 0;

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	lockdep_assert_held(&ar->conf_mutex);

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	if (sta->wme)
		arg->peer_flags |= WMI_PEER_QOS;

	if (sta->wme && sta->uapsd_queues) {
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		ath10k_dbg(ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
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			   sta->uapsd_queues, sta->max_sp);

		arg->peer_flags |= WMI_PEER_APSD;
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		arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
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		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
			uapsd |= WMI_AP_PS_UAPSD_AC3_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC3_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
			uapsd |= WMI_AP_PS_UAPSD_AC2_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC2_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
			uapsd |= WMI_AP_PS_UAPSD_AC1_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC1_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
			uapsd |= WMI_AP_PS_UAPSD_AC0_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC0_TRIGGER_EN;


		if (sta->max_sp < MAX_WMI_AP_PS_PEER_PARAM_MAX_SP)
			max_sp = sta->max_sp;

		ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
					   sta->addr,
					   WMI_AP_PS_PEER_PARAM_UAPSD,
					   uapsd);

		ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
					   sta->addr,
					   WMI_AP_PS_PEER_PARAM_MAX_SP,
					   max_sp);

		/* TODO setup this based on STA listen interval and
		   beacon interval. Currently we don't know
		   sta->listen_interval - mac80211 patch required.
		   Currently use 10 seconds */
		ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
					   sta->addr,
					   WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
					   10);
	}
}

static void ath10k_peer_assoc_h_qos_sta(struct ath10k *ar,
					struct ath10k_vif *arvif,
					struct ieee80211_sta *sta,
					struct ieee80211_bss_conf *bss_conf,
					struct wmi_peer_assoc_complete_arg *arg)
{
	if (bss_conf->qos)
		arg->peer_flags |= WMI_PEER_QOS;
}

static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;

	if (!vht_cap->vht_supported)
		return;

	arg->peer_flags |= WMI_PEER_VHT;

	arg->peer_vht_caps = vht_cap->cap;

	if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
		arg->peer_flags |= WMI_PEER_80MHZ;

	arg->peer_vht_rates.rx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.rx_highest);
	arg->peer_vht_rates.rx_mcs_set =
		__le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
	arg->peer_vht_rates.tx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.tx_highest);
	arg->peer_vht_rates.tx_mcs_set =
		__le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);

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	ath10k_dbg(ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
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}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta,
				    struct ieee80211_bss_conf *bss_conf,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
		ath10k_peer_assoc_h_qos_ap(ar, arvif, sta, bss_conf, arg);
		break;
	case WMI_VDEV_TYPE_STA:
		ath10k_peer_assoc_h_qos_sta(ar, arvif, sta, bss_conf, arg);
		break;
	default:
		break;
	}
}

static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
					struct ath10k_vif *arvif,
					struct ieee80211_sta *sta,
					struct wmi_peer_assoc_complete_arg *arg)
{
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

	switch (ar->hw->conf.chandef.chan->band) {
	case IEEE80211_BAND_2GHZ:
		if (sta->ht_cap.ht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
		} else {
			phymode = MODE_11G;
		}

		break;
	case IEEE80211_BAND_5GHZ:
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		/*
		 * Check VHT first.
		 */
		if (sta->vht_cap.vht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
				phymode = MODE_11AC_VHT80;
			else if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
				phymode = MODE_11AC_VHT20;
		} else if (sta->ht_cap.ht_supported) {
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			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

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	ath10k_dbg(ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
		   sta->addr, ath10k_wmi_phymode_str(phymode));
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	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

static int ath10k_peer_assoc(struct ath10k *ar,
			     struct ath10k_vif *arvif,
			     struct ieee80211_sta *sta,
			     struct ieee80211_bss_conf *bss_conf)
{
	struct wmi_peer_assoc_complete_arg arg;

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	lockdep_assert_held(&ar->conf_mutex);

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	memset(&arg, 0, sizeof(struct wmi_peer_assoc_complete_arg));

	ath10k_peer_assoc_h_basic(ar, arvif, sta, bss_conf, &arg);
	ath10k_peer_assoc_h_crypto(ar, arvif, &arg);
	ath10k_peer_assoc_h_rates(ar, sta, &arg);
	ath10k_peer_assoc_h_ht(ar, sta, &arg);
	ath10k_peer_assoc_h_vht(ar, sta, &arg);
	ath10k_peer_assoc_h_qos(ar, arvif, sta, bss_conf, &arg);
	ath10k_peer_assoc_h_phymode(ar, arvif, sta, &arg);

	return ath10k_wmi_peer_assoc(ar, &arg);
}

/* can be called only in mac80211 callbacks due to `key_count` usage */
static void ath10k_bss_assoc(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_bss_conf *bss_conf)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ieee80211_sta *ap_sta;
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

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	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
		ath10k_warn("Failed to find station entry for %pM\n",
			    bss_conf->bssid);
		rcu_read_unlock();
		return;
	}

	ret = ath10k_peer_assoc(ar, arvif, ap_sta, bss_conf);
	if (ret) {
		ath10k_warn("Peer assoc failed for %pM\n", bss_conf->bssid);
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

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	ath10k_dbg(ATH10K_DBG_MAC,
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

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	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, bss_conf->aid,
				 bss_conf->bssid);
	if (ret)
		ath10k_warn("VDEV: %d up failed: ret %d\n",
			    arvif->vdev_id, ret);
}

/*
 * FIXME: flush TIDs
 */
static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

1200 1201 1202 1203 1204 1205
	/*
	 * For some reason, calling VDEV-DOWN before VDEV-STOP
	 * makes the FW to send frames via HTT after disassociation.
	 * No idea why this happens, even though VDEV-DOWN is supposed
	 * to be analogous to link down, so just stop the VDEV.
	 */
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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d stop (disassociated\n",
		   arvif->vdev_id);

	/* FIXME: check return value */
1210 1211 1212 1213 1214 1215 1216 1217 1218
	ret = ath10k_vdev_stop(arvif);

	/*
	 * If we don't call VDEV-DOWN after VDEV-STOP FW will remain active and
	 * report beacons from previously associated network through HTT.
	 * This in turn would spam mac80211 WARN_ON if we bring down all
	 * interfaces as it expects there is no rx when no interface is
	 * running.
	 */
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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d down\n", arvif->vdev_id);

	/* FIXME: why don't we print error if wmi call fails? */
1222 1223 1224 1225 1226 1227 1228 1229 1230 1231
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);

	arvif->def_wep_key_index = 0;
}

static int ath10k_station_assoc(struct ath10k *ar, struct ath10k_vif *arvif,
				struct ieee80211_sta *sta)
{
	int ret = 0;

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	lockdep_assert_held(&ar->conf_mutex);

1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
	ret = ath10k_peer_assoc(ar, arvif, sta, NULL);
	if (ret) {
		ath10k_warn("WMI peer assoc failed for %pM\n", sta->addr);
		return ret;
	}

	ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
	if (ret) {
		ath10k_warn("could not install peer wep keys (%d)\n", ret);
		return ret;
	}

	return ret;
}

static int ath10k_station_disassoc(struct ath10k *ar, struct ath10k_vif *arvif,
				   struct ieee80211_sta *sta)
{
	int ret = 0;

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	lockdep_assert_held(&ar->conf_mutex);

1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
		ath10k_warn("could not clear all peer wep keys (%d)\n", ret);
		return ret;
	}

	return ret;
}

/**************/
/* Regulatory */
/**************/

static int ath10k_update_channel_list(struct ath10k *ar)
{
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_supported_band **bands;
	enum ieee80211_band band;
	struct ieee80211_channel *channel;
	struct wmi_scan_chan_list_arg arg = {0};
	struct wmi_channel_arg *ch;
	bool passive;
	int len;
	int ret;
	int i;

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	lockdep_assert_held(&ar->conf_mutex);

1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346
	bands = hw->wiphy->bands;
	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
		if (!bands[band])
			continue;

		for (i = 0; i < bands[band]->n_channels; i++) {
			if (bands[band]->channels[i].flags &
			    IEEE80211_CHAN_DISABLED)
				continue;

			arg.n_channels++;
		}
	}

	len = sizeof(struct wmi_channel_arg) * arg.n_channels;
	arg.channels = kzalloc(len, GFP_KERNEL);
	if (!arg.channels)
		return -ENOMEM;

	ch = arg.channels;
	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
		if (!bands[band])
			continue;

		for (i = 0; i < bands[band]->n_channels; i++) {
			channel = &bands[band]->channels[i];

			if (channel->flags & IEEE80211_CHAN_DISABLED)
				continue;

			ch->allow_ht   = true;

			/* FIXME: when should we really allow VHT? */
			ch->allow_vht = true;

			ch->allow_ibss =
				!(channel->flags & IEEE80211_CHAN_NO_IBSS);

			ch->ht40plus =
				!(channel->flags & IEEE80211_CHAN_NO_HT40PLUS);

			passive = channel->flags & IEEE80211_CHAN_PASSIVE_SCAN;
			ch->passive = passive;

			ch->freq = channel->center_freq;
			ch->min_power = channel->max_power * 3;
			ch->max_power = channel->max_power * 4;
			ch->max_reg_power = channel->max_reg_power * 4;
			ch->max_antenna_gain = channel->max_antenna_gain;
			ch->reg_class_id = 0; /* FIXME */

			/* FIXME: why use only legacy modes, why not any
			 * HT/VHT modes? Would that even make any
			 * difference? */
			if (channel->band == IEEE80211_BAND_2GHZ)
				ch->mode = MODE_11G;
			else
				ch->mode = MODE_11A;

			if (WARN_ON_ONCE(ch->mode == MODE_UNKNOWN))
				continue;

			ath10k_dbg(ATH10K_DBG_WMI,
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				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361
				   ch->freq, ch->max_power, ch->max_reg_power,
				   ch->max_antenna_gain, ch->mode);

			ch++;
		}
	}

	ret = ath10k_wmi_scan_chan_list(ar, &arg);
	kfree(arg.channels);

	return ret;
}

1362
static void ath10k_regd_update(struct ath10k *ar)
1363 1364 1365 1366
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;

1367
	lockdep_assert_held(&ar->conf_mutex);
1368 1369 1370 1371 1372 1373

	ret = ath10k_update_channel_list(ar);
	if (ret)
		ath10k_warn("could not update channel list (%d)\n", ret);

	regpair = ar->ath_common.regulatory.regpair;
1374

1375 1376 1377 1378 1379 1380 1381 1382 1383 1384
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
					    regpair->regDmnEnum,
					    regpair->regDmnEnum, /* 2ghz */
					    regpair->regDmnEnum, /* 5ghz */
					    regpair->reg_2ghz_ctl,
					    regpair->reg_5ghz_ctl);
	if (ret)
		ath10k_warn("could not set pdev regdomain (%d)\n", ret);
1385
}
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1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397
static void ath10k_reg_notifier(struct wiphy *wiphy,
				struct regulatory_request *request)
{
	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
	struct ath10k *ar = hw->priv;

	ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory);

	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
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	mutex_unlock(&ar->conf_mutex);
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}

/***************/
/* TX handlers */
/***************/

/*
 * Frames sent to the FW have to be in "Native Wifi" format.
 * Strip the QoS field from the 802.11 header.
 */
static void ath10k_tx_h_qos_workaround(struct ieee80211_hw *hw,
				       struct ieee80211_tx_control *control,
				       struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
	u8 *qos_ctl;

	if (!ieee80211_is_data_qos(hdr->frame_control))
		return;

	qos_ctl = ieee80211_get_qos_ctl(hdr);
1420 1421 1422
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
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}

static void ath10k_tx_h_update_wep_key(struct sk_buff *skb)
{
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_vif *vif = info->control.vif;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ieee80211_key_conf *key = info->control.hw_key;
	int ret;

	if (!ieee80211_has_protected(hdr->frame_control))
		return;

	if (!key)
		return;

	if (key->cipher != WLAN_CIPHER_SUITE_WEP40 &&
	    key->cipher != WLAN_CIPHER_SUITE_WEP104)
		return;

	if (key->keyidx == arvif->def_wep_key_index)
		return;

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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d keyidx %d\n",
		   arvif->vdev_id, key->keyidx);
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	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					WMI_VDEV_PARAM_DEF_KEYID,
					key->keyidx);
	if (ret) {
		ath10k_warn("could not update wep keyidx (%d)\n", ret);
		return;
	}

	arvif->def_wep_key_index = key->keyidx;
}

static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_vif *vif = info->control.vif;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	/* This is case only for P2P_GO */
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP ||
	    arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO)
		return;

	if (unlikely(ieee80211_is_probe_resp(hdr->frame_control))) {
		spin_lock_bh(&ar->data_lock);
		if (arvif->u.ap.noa_data)
			if (!pskb_expand_head(skb, 0, arvif->u.ap.noa_len,
					      GFP_ATOMIC))
				memcpy(skb_put(skb, arvif->u.ap.noa_len),
				       arvif->u.ap.noa_data,
				       arvif->u.ap.noa_len);
		spin_unlock_bh(&ar->data_lock);
	}
}

static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1489
	int ret = 0;
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	if (ar->htt.target_version_major >= 3) {
		/* Since HTT 3.0 there is no separate mgmt tx command */
		ret = ath10k_htt_tx(&ar->htt, skb);
		goto exit;
	}

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	if (ieee80211_is_mgmt(hdr->frame_control)) {
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features)) {
			if (skb_queue_len(&ar->wmi_mgmt_tx_queue) >=
			    ATH10K_MAX_NUM_MGMT_PENDING) {
				ath10k_warn("wmi mgmt_tx queue limit reached\n");
				ret = -EBUSY;
				goto exit;
			}

			skb_queue_tail(&ar->wmi_mgmt_tx_queue, skb);
			ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
		} else {
			ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
		}
	} else if (!test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features) &&
		   ieee80211_is_nullfunc(hdr->frame_control)) {
1515 1516
		/* FW does not report tx status properly for NullFunc frames
		 * unless they are sent through mgmt tx path. mac80211 sends
1517 1518
		 * those frames when it detects link/beacon loss and depends
		 * on the tx status to be correct. */
1519
		ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
1520
	} else {
1521
		ret = ath10k_htt_tx(&ar->htt, skb);
1522
	}
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exit:
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	if (ret) {
		ath10k_warn("tx failed (%d). dropping packet.\n", ret);
		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_offchan_tx_purge(struct ath10k *ar)
{
	struct sk_buff *skb;

	for (;;) {
		skb = skb_dequeue(&ar->offchan_tx_queue);
		if (!skb)
			break;

		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_offchan_tx_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work);
	struct ath10k_peer *peer;
	struct ieee80211_hdr *hdr;
	struct sk_buff *skb;
	const u8 *peer_addr;
	int vdev_id;
	int ret;

	/* FW requirement: We must create a peer before FW will send out
	 * an offchannel frame. Otherwise the frame will be stuck and
	 * never transmitted. We delete the peer upon tx completion.
	 * It is unlikely that a peer for offchannel tx will already be
	 * present. However it may be in some rare cases so account for that.
	 * Otherwise we might remove a legitimate peer and break stuff. */

	for (;;) {
		skb = skb_dequeue(&ar->offchan_tx_queue);
		if (!skb)
			break;

		mutex_lock(&ar->conf_mutex);

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		ath10k_dbg(ATH10K_DBG_MAC, "mac offchannel skb %p\n",
1569 1570 1571 1572
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
1573
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
1574 1575 1576 1577 1578 1579

		spin_lock_bh(&ar->data_lock);
		peer = ath10k_peer_find(ar, vdev_id, peer_addr);
		spin_unlock_bh(&ar->data_lock);

		if (peer)
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			/* FIXME: should this use ath10k_warn()? */
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			ath10k_dbg(ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
				   peer_addr, vdev_id);

		if (!peer) {
			ret = ath10k_peer_create(ar, vdev_id, peer_addr);
			if (ret)
				ath10k_warn("peer %pM on vdev %d not created (%d)\n",
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
		INIT_COMPLETION(ar->offchan_tx_completed);
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

		ath10k_tx_htt(ar, skb);

		ret = wait_for_completion_timeout(&ar->offchan_tx_completed,
						  3 * HZ);
		if (ret <= 0)
			ath10k_warn("timed out waiting for offchannel skb %p\n",
				    skb);

		if (!peer) {
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
				ath10k_warn("peer %pM on vdev %d not deleted (%d)\n",
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644
void ath10k_mgmt_over_wmi_tx_purge(struct ath10k *ar)
{
	struct sk_buff *skb;

	for (;;) {
		skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
		if (!skb)
			break;

		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k, wmi_mgmt_tx_work);
	struct sk_buff *skb;
	int ret;

	for (;;) {
		skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
		if (!skb)
			break;

		ret = ath10k_wmi_mgmt_tx(ar, skb);
		if (ret)
			ath10k_warn("wmi mgmt_tx failed (%d)\n", ret);
	}
}

1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700
/************/
/* Scanning */
/************/

/*
 * This gets called if we dont get a heart-beat during scan.
 * This may indicate the FW has hung and we need to abort the
 * scan manually to prevent cancel_hw_scan() from deadlocking
 */
void ath10k_reset_scan(unsigned long ptr)
{
	struct ath10k *ar = (struct ath10k *)ptr;

	spin_lock_bh(&ar->data_lock);
	if (!ar->scan.in_progress) {
		spin_unlock_bh(&ar->data_lock);
		return;
	}

	ath10k_warn("scan timeout. resetting. fw issue?\n");

	if (ar->scan.is_roc)
		ieee80211_remain_on_channel_expired(ar->hw);
	else
		ieee80211_scan_completed(ar->hw, 1 /* aborted */);

	ar->scan.in_progress = false;
	complete_all(&ar->scan.completed);
	spin_unlock_bh(&ar->data_lock);
}

static int ath10k_abort_scan(struct ath10k *ar)
{
	struct wmi_stop_scan_arg arg = {
		.req_id = 1, /* FIXME */
		.req_type = WMI_SCAN_STOP_ONE,
		.u.scan_id = ATH10K_SCAN_ID,
	};
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	del_timer_sync(&ar->scan.timeout);

	spin_lock_bh(&ar->data_lock);
	if (!ar->scan.in_progress) {
		spin_unlock_bh(&ar->data_lock);
		return 0;
	}

	ar->scan.aborting = true;
	spin_unlock_bh(&ar->data_lock);

	ret = ath10k_wmi_stop_scan(ar, &arg);
	if (ret) {
		ath10k_warn("could not submit wmi stop scan (%d)\n", ret);
1701 1702 1703 1704
		spin_lock_bh(&ar->data_lock);
		ar->scan.in_progress = false;
		ath10k_offchan_tx_purge(ar);
		spin_unlock_bh(&ar->data_lock);
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		return -EIO;
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
	if (ret == 0)
		ath10k_warn("timed out while waiting for scan to stop\n");

	/* scan completion may be done right after we timeout here, so let's
	 * check the in_progress and tell mac80211 scan is completed. if we
	 * don't do that and FW fails to send us scan completion indication
	 * then userspace won't be able to scan anymore */
	ret = 0;

	spin_lock_bh(&ar->data_lock);
	if (ar->scan.in_progress) {
		ath10k_warn("could not stop scan. its still in progress\n");
		ar->scan.in_progress = false;
		ath10k_offchan_tx_purge(ar);
		ret = -ETIMEDOUT;
	}
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

static int ath10k_start_scan(struct ath10k *ar,
			     const struct wmi_start_scan_arg *arg)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_start_scan(ar, arg);
	if (ret)
		return ret;

	ret = wait_for_completion_timeout(&ar->scan.started, 1*HZ);
	if (ret == 0) {
		ath10k_abort_scan(ar);
		return ret;
	}

	/* the scan can complete earlier, before we even
	 * start the timer. in that case the timer handler
	 * checks ar->scan.in_progress and bails out if its
	 * false. Add a 200ms margin to account event/command
	 * processing. */
	mod_timer(&ar->scan.timeout, jiffies +
		  msecs_to_jiffies(arg->max_scan_time+200));
	return 0;
}

/**********************/
/* mac80211 callbacks */
/**********************/

static void ath10k_tx(struct ieee80211_hw *hw,
		      struct ieee80211_tx_control *control,
		      struct sk_buff *skb)
{
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = NULL;
	u32 vdev_id = 0;
	u8 tid;

	if (info->control.vif) {
		arvif = ath10k_vif_to_arvif(info->control.vif);
		vdev_id = arvif->vdev_id;
	} else if (ar->monitor_enabled) {
		vdev_id = ar->monitor_vdev_id;
	}

	/* We should disable CCK RATE due to P2P */
	if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
		ath10k_dbg(ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");

	/* we must calculate tid before we apply qos workaround
	 * as we'd lose the qos control field */
	tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
M
Michal Kazior 已提交
1786 1787 1788 1789
	if (ieee80211_is_mgmt(hdr->frame_control)) {
		tid = HTT_DATA_TX_EXT_TID_MGMT;
	} else if (ieee80211_is_data_qos(hdr->frame_control) &&
		   is_unicast_ether_addr(ieee80211_get_DA(hdr))) {
1790 1791 1792 1793
		u8 *qc = ieee80211_get_qos_ctl(hdr);
		tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
	}

1794 1795 1796 1797 1798 1799 1800 1801
	/* it makes no sense to process injected frames like that */
	if (info->control.vif &&
	    info->control.vif->type != NL80211_IFTYPE_MONITOR) {
		ath10k_tx_h_qos_workaround(hw, control, skb);
		ath10k_tx_h_update_wep_key(skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, skb);
		ath10k_tx_h_seq_no(skb);
	}
1802

1803
	ATH10K_SKB_CB(skb)->vdev_id = vdev_id;
1804
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
1805 1806 1807 1808 1809
	ATH10K_SKB_CB(skb)->htt.tid = tid;

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
		ATH10K_SKB_CB(skb)->htt.is_offchan = true;
1810
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825
		spin_unlock_bh(&ar->data_lock);

		ath10k_dbg(ATH10K_DBG_MAC, "queued offchannel skb %p\n", skb);

		skb_queue_tail(&ar->offchan_tx_queue, skb);
		ieee80211_queue_work(hw, &ar->offchan_tx_work);
		return;
	}

	ath10k_tx_htt(ar, skb);
}

/*
 * Initialize various parameters with default vaules.
 */
1826
void ath10k_halt(struct ath10k *ar)
1827 1828 1829 1830 1831
{
	lockdep_assert_held(&ar->conf_mutex);

	del_timer_sync(&ar->scan.timeout);
	ath10k_offchan_tx_purge(ar);
1832
	ath10k_mgmt_over_wmi_tx_purge(ar);
1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
	if (ar->scan.in_progress) {
		del_timer(&ar->scan.timeout);
		ar->scan.in_progress = false;
		ieee80211_scan_completed(ar->hw, true);
	}
	spin_unlock_bh(&ar->data_lock);
}

1846 1847 1848
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
1849
	int ret = 0;
1850

M
Michal Kazior 已提交
1851 1852
	mutex_lock(&ar->conf_mutex);

1853 1854
	if (ar->state != ATH10K_STATE_OFF &&
	    ar->state != ATH10K_STATE_RESTARTING) {
1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873
		ret = -EINVAL;
		goto exit;
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
		ath10k_err("could not init hif (%d)\n", ret);
		ar->state = ATH10K_STATE_OFF;
		goto exit;
	}

	ret = ath10k_core_start(ar);
	if (ret) {
		ath10k_err("could not init core (%d)\n", ret);
		ath10k_hif_power_down(ar);
		ar->state = ATH10K_STATE_OFF;
		goto exit;
	}

1874 1875 1876 1877 1878
	if (ar->state == ATH10K_STATE_OFF)
		ar->state = ATH10K_STATE_ON;
	else if (ar->state == ATH10K_STATE_RESTARTING)
		ar->state = ATH10K_STATE_RESTARTED;

1879 1880 1881 1882 1883 1884 1885 1886 1887 1888
	ret = ath10k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_PMF_QOS, 1);
	if (ret)
		ath10k_warn("could not enable WMI_PDEV_PARAM_PMF_QOS (%d)\n",
			    ret);

	ret = ath10k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_DYNAMIC_BW, 0);
	if (ret)
		ath10k_warn("could not init WMI_PDEV_PARAM_DYNAMIC_BW (%d)\n",
			    ret);

1889 1890
	ath10k_regd_update(ar);

1891
exit:
M
Michal Kazior 已提交
1892
	mutex_unlock(&ar->conf_mutex);
1893 1894 1895 1896 1897 1898 1899
	return 0;
}

static void ath10k_stop(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

M
Michal Kazior 已提交
1900
	mutex_lock(&ar->conf_mutex);
1901 1902 1903
	if (ar->state == ATH10K_STATE_ON ||
	    ar->state == ATH10K_STATE_RESTARTED ||
	    ar->state == ATH10K_STATE_WEDGED)
1904
		ath10k_halt(ar);
1905

1906
	ar->state = ATH10K_STATE_OFF;
M
Michal Kazior 已提交
1907 1908
	mutex_unlock(&ar->conf_mutex);

1909 1910
	ath10k_mgmt_over_wmi_tx_purge(ar);

M
Michal Kazior 已提交
1911
	cancel_work_sync(&ar->offchan_tx_work);
1912
	cancel_work_sync(&ar->wmi_mgmt_tx_work);
1913
	cancel_work_sync(&ar->restart_work);
1914 1915
}

1916
static void ath10k_config_ps(struct ath10k *ar)
1917 1918
{
	struct ath10k_generic_iter ar_iter;
1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941

	lockdep_assert_held(&ar->conf_mutex);

	/* During HW reconfiguration mac80211 reports all interfaces that were
	 * running until reconfiguration was started. Since FW doesn't have any
	 * vdevs at this point we must not iterate over this interface list.
	 * This setting will be updated upon add_interface(). */
	if (ar->state == ATH10K_STATE_RESTARTED)
		return;

	memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter));
	ar_iter.ar = ar;

	ieee80211_iterate_active_interfaces_atomic(
		ar->hw, IEEE80211_IFACE_ITER_NORMAL,
		ath10k_ps_iter, &ar_iter);

	if (ar_iter.ret)
		ath10k_warn("failed to set ps config (%d)\n", ar_iter.ret);
}

static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
1942 1943 1944 1945 1946 1947 1948
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
K
Kalle Valo 已提交
1949
		ath10k_dbg(ATH10K_DBG_MAC, "mac config channel %d mhz\n",
1950 1951 1952 1953 1954 1955
			   conf->chandef.chan->center_freq);
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
	}

1956 1957
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
		if (conf->flags & IEEE80211_CONF_MONITOR)
			ret = ath10k_monitor_create(ar);
		else
			ret = ath10k_monitor_destroy(ar);
	}

	mutex_unlock(&ar->conf_mutex);
	return ret;
}

/*
 * TODO:
 * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
 * because we will send mgmt frames without CCK. This requirement
 * for P2P_FIND/GO_NEG should be handled by checking CCK flag
 * in the TX packet.
 */
static int ath10k_add_interface(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	enum wmi_sta_powersave_param param;
	int ret = 0;
1984
	u32 value;
1985 1986 1987 1988
	int bit;

	mutex_lock(&ar->conf_mutex);

1989 1990
	memset(arvif, 0, sizeof(*arvif));

1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
	arvif->ar = ar;
	arvif->vif = vif;

	if ((vif->type == NL80211_IFTYPE_MONITOR) && ar->monitor_present) {
		ath10k_warn("Only one monitor interface allowed\n");
		ret = -EBUSY;
		goto exit;
	}

	bit = ffs(ar->free_vdev_map);
	if (bit == 0) {
		ret = -EBUSY;
		goto exit;
	}

	arvif->vdev_id = bit - 1;
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;
	ar->free_vdev_map &= ~(1 << arvif->vdev_id);

	if (ar->p2p)
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;

	switch (vif->type) {
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT;
		break;
	case NL80211_IFTYPE_ADHOC:
		arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
		break;
	case NL80211_IFTYPE_AP:
		arvif->vdev_type = WMI_VDEV_TYPE_AP;

		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_GO;
		break;
	case NL80211_IFTYPE_MONITOR:
		arvif->vdev_type = WMI_VDEV_TYPE_MONITOR;
		break;
	default:
		WARN_ON(1);
		break;
	}

K
Kalle Valo 已提交
2037
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d\n",
2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088
		   arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype);

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
		ath10k_warn("WMI vdev create failed: ret %d\n", ret);
		goto exit;
	}

	ret = ath10k_wmi_vdev_set_param(ar, 0, WMI_VDEV_PARAM_DEF_KEYID,
					arvif->def_wep_key_index);
	if (ret)
		ath10k_warn("Failed to set default keyid: %d\n", ret);

	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					WMI_VDEV_PARAM_TX_ENCAP_TYPE,
					ATH10K_HW_TXRX_NATIVE_WIFI);
	if (ret)
		ath10k_warn("Failed to set TX encap: %d\n", ret);

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr);
		if (ret) {
			ath10k_warn("Failed to create peer for AP: %d\n", ret);
			goto exit;
		}
	}

	if (arvif->vdev_type == WMI_VDEV_TYPE_STA) {
		param = WMI_STA_PS_PARAM_RX_WAKE_POLICY;
		value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
		if (ret)
			ath10k_warn("Failed to set RX wake policy: %d\n", ret);

		param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD;
		value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
		if (ret)
			ath10k_warn("Failed to set TX wake thresh: %d\n", ret);

		param = WMI_STA_PS_PARAM_PSPOLL_COUNT;
		value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
		if (ret)
			ath10k_warn("Failed to set PSPOLL count: %d\n", ret);
	}

2089
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
2090 2091 2092 2093
	if (ret)
		ath10k_warn("failed to set rts threshold for vdev %d (%d)\n",
			    arvif->vdev_id, ret);

2094
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
2095 2096 2097 2098
	if (ret)
		ath10k_warn("failed to set frag threshold for vdev %d (%d)\n",
			    arvif->vdev_id, ret);

2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115
	if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
		ar->monitor_present = true;

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static void ath10k_remove_interface(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

	mutex_lock(&ar->conf_mutex);

2116 2117 2118 2119 2120 2121 2122
	spin_lock_bh(&ar->data_lock);
	if (arvif->beacon) {
		dev_kfree_skb_any(arvif->beacon);
		arvif->beacon = NULL;
	}
	spin_unlock_bh(&ar->data_lock);

2123 2124 2125 2126 2127 2128 2129 2130 2131 2132
	ar->free_vdev_map |= 1 << (arvif->vdev_id);

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, vif->addr);
		if (ret)
			ath10k_warn("Failed to remove peer for AP: %d\n", ret);

		kfree(arvif->u.ap.noa_data);
	}

K
Kalle Valo 已提交
2133 2134 2135
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev delete %d (remove interface)\n",
		   arvif->vdev_id);

2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
		ath10k_warn("WMI vdev delete failed: %d\n", ret);

	if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
		ar->monitor_present = false;

	ath10k_peer_cleanup(ar, arvif->vdev_id);

	mutex_unlock(&ar->conf_mutex);
}

/*
 * FIXME: Has to be verified.
 */
#define SUPPORTED_FILTERS			\
	(FIF_PROMISC_IN_BSS |			\
	FIF_ALLMULTI |				\
	FIF_CONTROL |				\
	FIF_PSPOLL |				\
	FIF_OTHER_BSS |				\
	FIF_BCN_PRBRESP_PROMISC |		\
	FIF_PROBE_REQ |				\
	FIF_FCSFAIL)

static void ath10k_configure_filter(struct ieee80211_hw *hw,
				    unsigned int changed_flags,
				    unsigned int *total_flags,
				    u64 multicast)
{
	struct ath10k *ar = hw->priv;
	int ret;

	mutex_lock(&ar->conf_mutex);

	changed_flags &= SUPPORTED_FILTERS;
	*total_flags &= SUPPORTED_FILTERS;
	ar->filter_flags = *total_flags;

	if ((ar->filter_flags & FIF_PROMISC_IN_BSS) &&
	    !ar->monitor_enabled) {
K
Kalle Valo 已提交
2177 2178 2179
		ath10k_dbg(ATH10K_DBG_MAC, "mac monitor %d start\n",
			   ar->monitor_vdev_id);

2180 2181 2182 2183 2184
		ret = ath10k_monitor_start(ar, ar->monitor_vdev_id);
		if (ret)
			ath10k_warn("Unable to start monitor mode\n");
	} else if (!(ar->filter_flags & FIF_PROMISC_IN_BSS) &&
		   ar->monitor_enabled) {
K
Kalle Valo 已提交
2185 2186 2187
		ath10k_dbg(ATH10K_DBG_MAC, "mac monitor %d stop\n",
			   ar->monitor_vdev_id);

2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214
		ret = ath10k_monitor_stop(ar);
		if (ret)
			ath10k_warn("Unable to stop monitor mode\n");
	}

	mutex_unlock(&ar->conf_mutex);
}

static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_bss_conf *info,
				    u32 changed)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (changed & BSS_CHANGED_IBSS)
		ath10k_control_ibss(arvif, info, vif->addr);

	if (changed & BSS_CHANGED_BEACON_INT) {
		arvif->beacon_interval = info->beacon_int;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
						WMI_VDEV_PARAM_BEACON_INTERVAL,
						arvif->beacon_interval);
K
Kalle Valo 已提交
2215 2216 2217 2218
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

2219 2220 2221 2222 2223 2224
		if (ret)
			ath10k_warn("Failed to set beacon interval for VDEV: %d\n",
				    arvif->vdev_id);
	}

	if (changed & BSS_CHANGED_BEACON) {
K
Kalle Valo 已提交
2225 2226 2227 2228
		ath10k_dbg(ATH10K_DBG_MAC,
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

2229 2230 2231 2232 2233 2234 2235 2236
		ret = ath10k_wmi_pdev_set_param(ar,
						WMI_PDEV_PARAM_BEACON_TX_MODE,
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
			ath10k_warn("Failed to set beacon mode for VDEV: %d\n",
				    arvif->vdev_id);
	}

2237
	if (changed & BSS_CHANGED_BEACON_INFO) {
2238 2239
		arvif->dtim_period = info->dtim_period;

K
Kalle Valo 已提交
2240 2241 2242 2243
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
						WMI_VDEV_PARAM_DTIM_PERIOD,
						arvif->dtim_period);
		if (ret)
			ath10k_warn("Failed to set dtim period for VDEV: %d\n",
				    arvif->vdev_id);
	}

	if (changed & BSS_CHANGED_SSID &&
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->u.ap.ssid_len = info->ssid_len;
		if (info->ssid_len)
			memcpy(arvif->u.ap.ssid, info->ssid, info->ssid_len);
		arvif->u.ap.hidden_ssid = info->hidden_ssid;
	}

	if (changed & BSS_CHANGED_BSSID) {
		if (!is_zero_ether_addr(info->bssid)) {
K
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2262 2263 2264 2265
			ath10k_dbg(ATH10K_DBG_MAC,
				   "mac vdev %d create peer %pM\n",
				   arvif->vdev_id, info->bssid);

2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279
			ret = ath10k_peer_create(ar, arvif->vdev_id,
						 info->bssid);
			if (ret)
				ath10k_warn("Failed to add peer: %pM for VDEV: %d\n",
					    info->bssid, arvif->vdev_id);

			if (vif->type == NL80211_IFTYPE_STATION) {
				/*
				 * this is never erased as we it for crypto key
				 * clearing; this is FW requirement
				 */
				memcpy(arvif->u.sta.bssid, info->bssid,
				       ETH_ALEN);

K
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2280 2281 2282 2283 2284
				ath10k_dbg(ATH10K_DBG_MAC,
					   "mac vdev %d start %pM\n",
					   arvif->vdev_id, info->bssid);

				/* FIXME: check return value */
2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308
				ret = ath10k_vdev_start(arvif);
			}

			/*
			 * Mac80211 does not keep IBSS bssid when leaving IBSS,
			 * so driver need to store it. It is needed when leaving
			 * IBSS in order to remove BSSID peer.
			 */
			if (vif->type == NL80211_IFTYPE_ADHOC)
				memcpy(arvif->u.ibss.bssid, info->bssid,
				       ETH_ALEN);
		}
	}

	if (changed & BSS_CHANGED_BEACON_ENABLED)
		ath10k_control_beaconing(arvif, info);

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
		u32 cts_prot;
		if (info->use_cts_prot)
			cts_prot = 1;
		else
			cts_prot = 0;

K
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2309 2310 2311
		ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
			   arvif->vdev_id, cts_prot);

2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
						WMI_VDEV_PARAM_ENABLE_RTSCTS,
						cts_prot);
		if (ret)
			ath10k_warn("Failed to set CTS prot for VDEV: %d\n",
				    arvif->vdev_id);
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
		u32 slottime;
		if (info->use_short_slot)
			slottime = WMI_VDEV_SLOT_TIME_SHORT; /* 9us */

		else
			slottime = WMI_VDEV_SLOT_TIME_LONG; /* 20us */

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		ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
			   arvif->vdev_id, slottime);

2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
						WMI_VDEV_PARAM_SLOT_TIME,
						slottime);
		if (ret)
			ath10k_warn("Failed to set erp slot for VDEV: %d\n",
				    arvif->vdev_id);
	}

	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		u32 preamble;
		if (info->use_short_preamble)
			preamble = WMI_VDEV_PREAMBLE_SHORT;
		else
			preamble = WMI_VDEV_PREAMBLE_LONG;

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		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
						WMI_VDEV_PARAM_PREAMBLE,
						preamble);
		if (ret)
			ath10k_warn("Failed to set preamble for VDEV: %d\n",
				    arvif->vdev_id);
	}

	if (changed & BSS_CHANGED_ASSOC) {
		if (info->assoc)
			ath10k_bss_assoc(hw, vif, info);
	}

	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
			  struct cfg80211_scan_request *req)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	if (ar->scan.in_progress) {
		spin_unlock_bh(&ar->data_lock);
		ret = -EBUSY;
		goto exit;
	}

	INIT_COMPLETION(ar->scan.started);
	INIT_COMPLETION(ar->scan.completed);
	ar->scan.in_progress = true;
	ar->scan.aborting = false;
	ar->scan.is_roc = false;
	ar->scan.vdev_id = arvif->vdev_id;
	spin_unlock_bh(&ar->data_lock);

	memset(&arg, 0, sizeof(arg));
	ath10k_wmi_start_scan_init(ar, &arg);
	arg.vdev_id = arvif->vdev_id;
	arg.scan_id = ATH10K_SCAN_ID;

	if (!req->no_cck)
		arg.scan_ctrl_flags |= WMI_SCAN_ADD_CCK_RATES;

	if (req->ie_len) {
		arg.ie_len = req->ie_len;
		memcpy(arg.ie, req->ie, arg.ie_len);
	}

	if (req->n_ssids) {
		arg.n_ssids = req->n_ssids;
		for (i = 0; i < arg.n_ssids; i++) {
			arg.ssids[i].len  = req->ssids[i].ssid_len;
			arg.ssids[i].ssid = req->ssids[i].ssid;
		}
2412 2413
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545
	}

	if (req->n_channels) {
		arg.n_channels = req->n_channels;
		for (i = 0; i < arg.n_channels; i++)
			arg.channels[i] = req->channels[i]->center_freq;
	}

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
		ath10k_warn("could not start hw scan (%d)\n", ret);
		spin_lock_bh(&ar->data_lock);
		ar->scan.in_progress = false;
		spin_unlock_bh(&ar->data_lock);
	}

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static void ath10k_cancel_hw_scan(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	int ret;

	mutex_lock(&ar->conf_mutex);
	ret = ath10k_abort_scan(ar);
	if (ret) {
		ath10k_warn("couldn't abort scan (%d). forcefully sending scan completion to mac80211\n",
			    ret);
		ieee80211_scan_completed(hw, 1 /* aborted */);
	}
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
			  struct ieee80211_vif *vif, struct ieee80211_sta *sta,
			  struct ieee80211_key_conf *key)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k_peer *peer;
	const u8 *peer_addr;
	bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
		      key->cipher == WLAN_CIPHER_SUITE_WEP104;
	int ret = 0;

	if (key->keyidx > WMI_MAX_KEY_INDEX)
		return -ENOSPC;

	mutex_lock(&ar->conf_mutex);

	if (sta)
		peer_addr = sta->addr;
	else if (arvif->vdev_type == WMI_VDEV_TYPE_STA)
		peer_addr = vif->bss_conf.bssid;
	else
		peer_addr = vif->addr;

	key->hw_key_idx = key->keyidx;

	/* the peer should not disappear in mid-way (unless FW goes awry) since
	 * we already hold conf_mutex. we just make sure its there now. */
	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer) {
		if (cmd == SET_KEY) {
			ath10k_warn("cannot install key for non-existent peer %pM\n",
				    peer_addr);
			ret = -EOPNOTSUPP;
			goto exit;
		} else {
			/* if the peer doesn't exist there is no key to disable
			 * anymore */
			goto exit;
		}
	}

	if (is_wep) {
		if (cmd == SET_KEY)
			arvif->wep_keys[key->keyidx] = key;
		else
			arvif->wep_keys[key->keyidx] = NULL;

		if (cmd == DISABLE_KEY)
			ath10k_clear_vdev_key(arvif, key);
	}

	ret = ath10k_install_key(arvif, key, cmd, peer_addr);
	if (ret) {
		ath10k_warn("ath10k_install_key failed (%d)\n", ret);
		goto exit;
	}

	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
	if (peer && cmd == SET_KEY)
		peer->keys[key->keyidx] = key;
	else if (peer && cmd == DISABLE_KEY)
		peer->keys[key->keyidx] = NULL;
	else if (peer == NULL)
		/* impossible unless FW goes crazy */
		ath10k_warn("peer %pM disappeared!\n", peer_addr);
	spin_unlock_bh(&ar->data_lock);

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_sta_state(struct ieee80211_hw *hw,
			    struct ieee80211_vif *vif,
			    struct ieee80211_sta *sta,
			    enum ieee80211_sta_state old_state,
			    enum ieee80211_sta_state new_state)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE &&
	    vif->type != NL80211_IFTYPE_STATION) {
		/*
		 * New station addition.
		 */
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		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d peer create %pM (new sta)\n",
			   arvif->vdev_id, sta->addr);

2550 2551 2552 2553 2554 2555 2556 2557 2558
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr);
		if (ret)
			ath10k_warn("Failed to add peer: %pM for VDEV: %d\n",
				    sta->addr, arvif->vdev_id);
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
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		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
			ath10k_warn("Failed to delete peer: %pM for VDEV: %d\n",
				    sta->addr, arvif->vdev_id);

		if (vif->type == NL80211_IFTYPE_STATION)
			ath10k_bss_disassoc(hw, vif);
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
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		ath10k_dbg(ATH10K_DBG_MAC, "mac sta %pM associated\n",
			   sta->addr);

2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589
		ret = ath10k_station_assoc(ar, arvif, sta);
		if (ret)
			ath10k_warn("Failed to associate station: %pM\n",
				    sta->addr);
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * Disassociation.
		 */
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		ath10k_dbg(ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
			   sta->addr);

2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609
		ret = ath10k_station_disassoc(ar, arvif, sta);
		if (ret)
			ath10k_warn("Failed to disassociate station: %pM\n",
				    sta->addr);
	}

	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
				 u16 ac, bool enable)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	u32 value = 0;
	int ret = 0;

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	lockdep_assert_held(&ar->conf_mutex);

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	if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
		return 0;

	switch (ac) {
	case IEEE80211_AC_VO:
		value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC3_TRIGGER_EN;
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
		break;
	}

	if (enable)
		arvif->u.sta.uapsd |= value;
	else
		arvif->u.sta.uapsd &= ~value;

	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  WMI_STA_PS_PARAM_UAPSD,
					  arvif->u.sta.uapsd);
	if (ret) {
		ath10k_warn("could not set uapsd params %d\n", ret);
		goto exit;
	}

	if (arvif->u.sta.uapsd)
		value = WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD;
	else
		value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;

	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  WMI_STA_PS_PARAM_RX_WAKE_POLICY,
					  value);
	if (ret)
		ath10k_warn("could not set rx wake param %d\n", ret);

exit:
	return ret;
}

static int ath10k_conf_tx(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif, u16 ac,
			  const struct ieee80211_tx_queue_params *params)
{
	struct ath10k *ar = hw->priv;
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
		p = &ar->wmm_params.ac_vo;
		break;
	case IEEE80211_AC_VI:
		p = &ar->wmm_params.ac_vi;
		break;
	case IEEE80211_AC_BE:
		p = &ar->wmm_params.ac_be;
		break;
	case IEEE80211_AC_BK:
		p = &ar->wmm_params.ac_bk;
		break;
	}

	if (WARN_ON(!p)) {
		ret = -EINVAL;
		goto exit;
	}

	p->cwmin = params->cw_min;
	p->cwmax = params->cw_max;
	p->aifs = params->aifs;

	/*
	 * The channel time duration programmed in the HW is in absolute
	 * microseconds, while mac80211 gives the txop in units of
	 * 32 microseconds.
	 */
	p->txop = params->txop * 32;

	/* FIXME: FW accepts wmm params per hw, not per vif */
	ret = ath10k_wmi_pdev_set_wmm_params(ar, &ar->wmm_params);
	if (ret) {
		ath10k_warn("could not set wmm params %d\n", ret);
		goto exit;
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
		ath10k_warn("could not set sta uapsd %d\n", ret);

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

#define ATH10K_ROC_TIMEOUT_HZ (2*HZ)

static int ath10k_remain_on_channel(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_channel *chan,
				    int duration,
				    enum ieee80211_roc_type type)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct wmi_start_scan_arg arg;
	int ret;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	if (ar->scan.in_progress) {
		spin_unlock_bh(&ar->data_lock);
		ret = -EBUSY;
		goto exit;
	}

	INIT_COMPLETION(ar->scan.started);
	INIT_COMPLETION(ar->scan.completed);
	INIT_COMPLETION(ar->scan.on_channel);
	ar->scan.in_progress = true;
	ar->scan.aborting = false;
	ar->scan.is_roc = true;
	ar->scan.vdev_id = arvif->vdev_id;
	ar->scan.roc_freq = chan->center_freq;
	spin_unlock_bh(&ar->data_lock);

	memset(&arg, 0, sizeof(arg));
	ath10k_wmi_start_scan_init(ar, &arg);
	arg.vdev_id = arvif->vdev_id;
	arg.scan_id = ATH10K_SCAN_ID;
	arg.n_channels = 1;
	arg.channels[0] = chan->center_freq;
	arg.dwell_time_active = duration;
	arg.dwell_time_passive = duration;
	arg.max_scan_time = 2 * duration;
	arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
	arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
		ath10k_warn("could not start roc scan (%d)\n", ret);
		spin_lock_bh(&ar->data_lock);
		ar->scan.in_progress = false;
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
		ath10k_warn("could not switch to channel for roc scan\n");
		ath10k_abort_scan(ar);
		ret = -ETIMEDOUT;
		goto exit;
	}

	ret = 0;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_cancel_remain_on_channel(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);
	ath10k_abort_scan(ar);
	mutex_unlock(&ar->conf_mutex);

	return 0;
}

/*
 * Both RTS and Fragmentation threshold are interface-specific
 * in ath10k, but device-specific in mac80211.
 */
static void ath10k_set_rts_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
	struct ath10k_generic_iter *ar_iter = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	u32 rts = ar_iter->ar->hw->wiphy->rts_threshold;

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	lockdep_assert_held(&arvif->ar->conf_mutex);

2809 2810 2811 2812 2813 2814 2815
	/* During HW reconfiguration mac80211 reports all interfaces that were
	 * running until reconfiguration was started. Since FW doesn't have any
	 * vdevs at this point we must not iterate over this interface list.
	 * This setting will be updated upon add_interface(). */
	if (ar_iter->ar->state == ATH10K_STATE_RESTARTED)
		return;

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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d rts_threshold %d\n",
		   arvif->vdev_id, rts);

2819
	ar_iter->ret = ath10k_mac_set_rts(arvif, rts);
2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833
	if (ar_iter->ret)
		ath10k_warn("Failed to set RTS threshold for VDEV: %d\n",
			    arvif->vdev_id);
}

static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct ath10k_generic_iter ar_iter;
	struct ath10k *ar = hw->priv;

	memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter));
	ar_iter.ar = ar;

	mutex_lock(&ar->conf_mutex);
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	ieee80211_iterate_active_interfaces_atomic(
2835
		hw, IEEE80211_IFACE_ITER_NORMAL,
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		ath10k_set_rts_iter, &ar_iter);
2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847
	mutex_unlock(&ar->conf_mutex);

	return ar_iter.ret;
}

static void ath10k_set_frag_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
	struct ath10k_generic_iter *ar_iter = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	u32 frag = ar_iter->ar->hw->wiphy->frag_threshold;

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	lockdep_assert_held(&arvif->ar->conf_mutex);

2850 2851 2852 2853 2854 2855 2856
	/* During HW reconfiguration mac80211 reports all interfaces that were
	 * running until reconfiguration was started. Since FW doesn't have any
	 * vdevs at this point we must not iterate over this interface list.
	 * This setting will be updated upon add_interface(). */
	if (ar_iter->ar->state == ATH10K_STATE_RESTARTED)
		return;

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	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d fragmentation_threshold %d\n",
		   arvif->vdev_id, frag);

2860
	ar_iter->ret = ath10k_mac_set_frag(arvif, frag);
2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874
	if (ar_iter->ret)
		ath10k_warn("Failed to set frag threshold for VDEV: %d\n",
			    arvif->vdev_id);
}

static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct ath10k_generic_iter ar_iter;
	struct ath10k *ar = hw->priv;

	memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter));
	ar_iter.ar = ar;

	mutex_lock(&ar->conf_mutex);
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	ieee80211_iterate_active_interfaces_atomic(
2876
		hw, IEEE80211_IFACE_ITER_NORMAL,
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2877
		ath10k_set_frag_iter, &ar_iter);
2878 2879 2880 2881 2882 2883 2884 2885
	mutex_unlock(&ar->conf_mutex);

	return ar_iter.ret;
}

static void ath10k_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
{
	struct ath10k *ar = hw->priv;
2886
	bool skip;
2887 2888 2889 2890 2891 2892 2893
	int ret;

	/* mac80211 doesn't care if we really xmit queued frames or not
	 * we'll collect those frames either way if we stop/delete vdevs */
	if (drop)
		return;

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Michal Kazior 已提交
2894 2895
	mutex_lock(&ar->conf_mutex);

2896 2897 2898
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

2899
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
2900
			bool empty;
2901

2902
			spin_lock_bh(&ar->htt.tx_lock);
2903
			empty = (ar->htt.num_pending_tx == 0);
2904
			spin_unlock_bh(&ar->htt.tx_lock);
2905 2906 2907 2908

			skip = (ar->state == ATH10K_STATE_WEDGED);

			(empty || skip);
2909
		}), ATH10K_FLUSH_TIMEOUT_HZ);
2910 2911

	if (ret <= 0 || skip)
2912
		ath10k_warn("tx not flushed\n");
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2913

2914
skip:
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2915
	mutex_unlock(&ar->conf_mutex);
2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926
}

/* TODO: Implement this function properly
 * For now it is needed to reply to Probe Requests in IBSS mode.
 * Propably we need this information from FW.
 */
static int ath10k_tx_last_beacon(struct ieee80211_hw *hw)
{
	return 1;
}

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2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987
#ifdef CONFIG_PM
static int ath10k_suspend(struct ieee80211_hw *hw,
			  struct cfg80211_wowlan *wowlan)
{
	struct ath10k *ar = hw->priv;
	int ret;

	ar->is_target_paused = false;

	ret = ath10k_wmi_pdev_suspend_target(ar);
	if (ret) {
		ath10k_warn("could not suspend target (%d)\n", ret);
		return 1;
	}

	ret = wait_event_interruptible_timeout(ar->event_queue,
					       ar->is_target_paused == true,
					       1 * HZ);
	if (ret < 0) {
		ath10k_warn("suspend interrupted (%d)\n", ret);
		goto resume;
	} else if (ret == 0) {
		ath10k_warn("suspend timed out - target pause event never came\n");
		goto resume;
	}

	ret = ath10k_hif_suspend(ar);
	if (ret) {
		ath10k_warn("could not suspend hif (%d)\n", ret);
		goto resume;
	}

	return 0;
resume:
	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret)
		ath10k_warn("could not resume target (%d)\n", ret);
	return 1;
}

static int ath10k_resume(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
	int ret;

	ret = ath10k_hif_resume(ar);
	if (ret) {
		ath10k_warn("could not resume hif (%d)\n", ret);
		return 1;
	}

	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret) {
		ath10k_warn("could not resume target (%d)\n", ret);
		return 1;
	}

	return 0;
}
#endif

2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003
static void ath10k_restart_complete(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);

	/* If device failed to restart it will be in a different state, e.g.
	 * ATH10K_STATE_WEDGED */
	if (ar->state == ATH10K_STATE_RESTARTED) {
		ath10k_info("device successfully recovered\n");
		ar->state = ATH10K_STATE_ON;
	}

	mutex_unlock(&ar->conf_mutex);
}

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Michal Kazior 已提交
3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038
static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
			     struct survey_info *survey)
{
	struct ath10k *ar = hw->priv;
	struct ieee80211_supported_band *sband;
	struct survey_info *ar_survey = &ar->survey[idx];
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
	if (sband && idx >= sband->n_channels) {
		idx -= sband->n_channels;
		sband = NULL;
	}

	if (!sband)
		sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];

	if (!sband || idx >= sband->n_channels) {
		ret = -ENOENT;
		goto exit;
	}

	spin_lock_bh(&ar->data_lock);
	memcpy(survey, ar_survey, sizeof(*survey));
	spin_unlock_bh(&ar->data_lock);

	survey->channel = &sband->channels[idx];

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058
static const struct ieee80211_ops ath10k_ops = {
	.tx				= ath10k_tx,
	.start				= ath10k_start,
	.stop				= ath10k_stop,
	.config				= ath10k_config,
	.add_interface			= ath10k_add_interface,
	.remove_interface		= ath10k_remove_interface,
	.configure_filter		= ath10k_configure_filter,
	.bss_info_changed		= ath10k_bss_info_changed,
	.hw_scan			= ath10k_hw_scan,
	.cancel_hw_scan			= ath10k_cancel_hw_scan,
	.set_key			= ath10k_set_key,
	.sta_state			= ath10k_sta_state,
	.conf_tx			= ath10k_conf_tx,
	.remain_on_channel		= ath10k_remain_on_channel,
	.cancel_remain_on_channel	= ath10k_cancel_remain_on_channel,
	.set_rts_threshold		= ath10k_set_rts_threshold,
	.set_frag_threshold		= ath10k_set_frag_threshold,
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
3059
	.restart_complete		= ath10k_restart_complete,
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3060
	.get_survey			= ath10k_get_survey,
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3061 3062 3063 3064
#ifdef CONFIG_PM
	.suspend			= ath10k_suspend,
	.resume				= ath10k_resume,
#endif
3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108
};

#define RATETAB_ENT(_rate, _rateid, _flags) { \
	.bitrate		= (_rate), \
	.flags			= (_flags), \
	.hw_value		= (_rateid), \
}

#define CHAN2G(_channel, _freq, _flags) { \
	.band			= IEEE80211_BAND_2GHZ, \
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

#define CHAN5G(_channel, _freq, _flags) { \
	.band			= IEEE80211_BAND_5GHZ, \
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

static const struct ieee80211_channel ath10k_2ghz_channels[] = {
	CHAN2G(1, 2412, 0),
	CHAN2G(2, 2417, 0),
	CHAN2G(3, 2422, 0),
	CHAN2G(4, 2427, 0),
	CHAN2G(5, 2432, 0),
	CHAN2G(6, 2437, 0),
	CHAN2G(7, 2442, 0),
	CHAN2G(8, 2447, 0),
	CHAN2G(9, 2452, 0),
	CHAN2G(10, 2457, 0),
	CHAN2G(11, 2462, 0),
	CHAN2G(12, 2467, 0),
	CHAN2G(13, 2472, 0),
	CHAN2G(14, 2484, 0),
};

static const struct ieee80211_channel ath10k_5ghz_channels[] = {
3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132
	CHAN5G(36, 5180, 0),
	CHAN5G(40, 5200, 0),
	CHAN5G(44, 5220, 0),
	CHAN5G(48, 5240, 0),
	CHAN5G(52, 5260, 0),
	CHAN5G(56, 5280, 0),
	CHAN5G(60, 5300, 0),
	CHAN5G(64, 5320, 0),
	CHAN5G(100, 5500, 0),
	CHAN5G(104, 5520, 0),
	CHAN5G(108, 5540, 0),
	CHAN5G(112, 5560, 0),
	CHAN5G(116, 5580, 0),
	CHAN5G(120, 5600, 0),
	CHAN5G(124, 5620, 0),
	CHAN5G(128, 5640, 0),
	CHAN5G(132, 5660, 0),
	CHAN5G(136, 5680, 0),
	CHAN5G(140, 5700, 0),
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181
};

static struct ieee80211_rate ath10k_rates[] = {
	/* CCK */
	RATETAB_ENT(10,  0x82, 0),
	RATETAB_ENT(20,  0x84, 0),
	RATETAB_ENT(55,  0x8b, 0),
	RATETAB_ENT(110, 0x96, 0),
	/* OFDM */
	RATETAB_ENT(60,  0x0c, 0),
	RATETAB_ENT(90,  0x12, 0),
	RATETAB_ENT(120, 0x18, 0),
	RATETAB_ENT(180, 0x24, 0),
	RATETAB_ENT(240, 0x30, 0),
	RATETAB_ENT(360, 0x48, 0),
	RATETAB_ENT(480, 0x60, 0),
	RATETAB_ENT(540, 0x6c, 0),
};

#define ath10k_a_rates (ath10k_rates + 4)
#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - 4)
#define ath10k_g_rates (ath10k_rates + 0)
#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))

struct ath10k *ath10k_mac_create(void)
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

	hw = ieee80211_alloc_hw(sizeof(struct ath10k), &ath10k_ops);
	if (!hw)
		return NULL;

	ar = hw->priv;
	ar->hw = hw;

	return ar;
}

void ath10k_mac_destroy(struct ath10k *ar)
{
	ieee80211_free_hw(ar->hw);
}

static const struct ieee80211_iface_limit ath10k_if_limits[] = {
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_STATION)
		| BIT(NL80211_IFTYPE_P2P_CLIENT)
3182 3183 3184 3185 3186 3187 3188 3189 3190
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204
};

static const struct ieee80211_iface_combination ath10k_if_comb = {
	.limits = ath10k_if_limits,
	.n_limits = ARRAY_SIZE(ath10k_if_limits),
	.max_interfaces = 8,
	.num_different_channels = 1,
	.beacon_int_infra_match = true,
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
3205
	int i;
3206 3207 3208 3209

	vht_cap.vht_supported = 1;
	vht_cap.cap = ar->vht_cap_info;

3210 3211 3212 3213 3214 3215 3216
	mcs_map = 0;
	for (i = 0; i < 8; i++) {
		if (i < ar->num_rf_chains)
			mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2);
		else
			mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2);
	}
3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278

	vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
	vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);

	return vht_cap;
}

static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
{
	int i;
	struct ieee80211_sta_ht_cap ht_cap = {0};

	if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED))
		return ht_cap;

	ht_cap.ht_supported = 1;
	ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
	ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
	ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
	ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
	ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT;

	if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;

	if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;

	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) {
		u32 smps;

		smps   = WLAN_HT_CAP_SM_PS_DYNAMIC;
		smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT;

		ht_cap.cap |= smps;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
		ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;

	if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
		u32 stbc;

		stbc   = ar->ht_cap_info;
		stbc  &= WMI_HT_CAP_RX_STBC;
		stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT;
		stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT;
		stbc  &= IEEE80211_HT_CAP_RX_STBC;

		ht_cap.cap |= stbc;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_LDPC)
		ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;

	if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT)
		ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT;

	/* max AMSDU is implicitly taken from vht_cap_info */
	if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK)
		ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;

3279
	for (i = 0; i < ar->num_rf_chains; i++)
3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337
		ht_cap.mcs.rx_mask[i] = 0xFF;

	ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;

	return ht_cap;
}


static void ath10k_get_arvif_iter(void *data, u8 *mac,
				  struct ieee80211_vif *vif)
{
	struct ath10k_vif_iter *arvif_iter = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	if (arvif->vdev_id == arvif_iter->vdev_id)
		arvif_iter->arvif = arvif;
}

struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_vif_iter arvif_iter;
	u32 flags;

	memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter));
	arvif_iter.vdev_id = vdev_id;

	flags = IEEE80211_IFACE_ITER_RESUME_ALL;
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   flags,
						   ath10k_get_arvif_iter,
						   &arvif_iter);
	if (!arvif_iter.arvif) {
		ath10k_warn("No VIF found for VDEV: %d\n", vdev_id);
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
	struct ieee80211_supported_band *band;
	struct ieee80211_sta_vht_cap vht_cap;
	struct ieee80211_sta_ht_cap ht_cap;
	void *channels;
	int ret;

	SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);

	SET_IEEE80211_DEV(ar->hw, ar->dev);

	ht_cap = ath10k_get_ht_cap(ar);
	vht_cap = ath10k_create_vht_cap(ar);

	if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
		channels = kmemdup(ath10k_2ghz_channels,
				   sizeof(ath10k_2ghz_channels),
				   GFP_KERNEL);
M
Michal Kazior 已提交
3338 3339 3340 3341
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359

		band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_g_rates_size;
		band->bitrates = ath10k_g_rates;
		band->ht_cap = ht_cap;

		/* vht is not supported in 2.4 GHz */

		ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
	}

	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
		channels = kmemdup(ath10k_5ghz_channels,
				   sizeof(ath10k_5ghz_channels),
				   GFP_KERNEL);
		if (!channels) {
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Michal Kazior 已提交
3360 3361
			ret = -ENOMEM;
			goto err_free;
3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391
		}

		band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_a_rates_size;
		band->bitrates = ath10k_a_rates;
		band->ht_cap = ht_cap;
		band->vht_cap = vht_cap;
		ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
	}

	ar->hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC) |
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_P2P_CLIENT) |
		BIT(NL80211_IFTYPE_P2P_GO);

	ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
			IEEE80211_HW_SUPPORTS_PS |
			IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
			IEEE80211_HW_SUPPORTS_UAPSD |
			IEEE80211_HW_MFP_CAPABLE |
			IEEE80211_HW_REPORTS_TX_ACK_STATUS |
			IEEE80211_HW_HAS_RATE_CONTROL |
			IEEE80211_HW_SUPPORTS_STATIC_SMPS |
			IEEE80211_HW_WANT_MONITOR_VIF |
			IEEE80211_HW_AP_LINK_PS;

3392 3393 3394 3395
	/* MSDU can have HTT TX fragment pushed in front. The additional 4
	 * bytes is used for padding/alignment if necessary. */
	ar->hw->extra_tx_headroom += sizeof(struct htt_data_tx_desc_frag)*2 + 4;

3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
		ar->hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;

	if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
		ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
		ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
	}

	ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
	ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;

	ar->hw->vif_data_size = sizeof(struct ath10k_vif);

	ar->hw->channel_change_time = 5000;
	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
	/*
	 * on LL hardware queues are managed entirely by the FW
	 * so we only advertise to mac we can do the queues thing
	 */
	ar->hw->queues = 4;

	ar->hw->wiphy->iface_combinations = &ath10k_if_comb;
	ar->hw->wiphy->n_iface_combinations = 1;

3425 3426
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

3427 3428 3429 3430
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
		ath10k_err("Regulatory initialization failed\n");
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Michal Kazior 已提交
3431
		goto err_free;
3432 3433 3434 3435 3436
	}

	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
		ath10k_err("ieee80211 registration failed: %d\n", ret);
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		goto err_free;
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	}

	if (!ath_is_world_regd(&ar->ath_common.regulatory)) {
		ret = regulatory_hint(ar->hw->wiphy,
				      ar->ath_common.regulatory.alpha2);
		if (ret)
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			goto err_unregister;
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	}

	return 0;
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err_unregister:
3450
	ieee80211_unregister_hw(ar->hw);
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err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

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	return ret;
}

void ath10k_mac_unregister(struct ath10k *ar)
{
	ieee80211_unregister_hw(ar->hw);

	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}