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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)
{
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	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

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	if (value != 0xFFFFFFFF)
		value = min_t(u32, arvif->ar->hw->wiphy->rts_threshold,
			      ATH10K_RTS_MAX);

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	vdev_param = ar->wmi.vdev_param->rts_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
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}

static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
{
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	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

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	if (value != 0xFFFFFFFF)
		value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
				ATH10K_FRAGMT_THRESHOLD_MIN,
				ATH10K_FRAGMT_THRESHOLD_MAX);

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	vdev_param = ar->wmi.vdev_param->fragmentation_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
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}

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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])
{
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	u32 vdev_param;
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	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;
	}

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	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
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					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;
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	u8 ampdu_factor;
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	if (!vht_cap->vht_supported)
		return;

	arg->peer_flags |= WMI_PEER_VHT;
	arg->peer_vht_caps = vht_cap->cap;

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	ampdu_factor = (vht_cap->cap &
			IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
		       IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;

	/* Workaround: Some Netgear/Linksys 11ac APs set Rx A-MPDU factor to
	 * zero in VHT IE. Using it would result in degraded throughput.
	 * arg->peer_max_mpdu at this point contains HT max_mpdu so keep
	 * it if VHT max_mpdu is smaller. */
	arg->peer_max_mpdu = max(arg->peer_max_mpdu,
				 (1U << (IEEE80211_HT_MAX_AMPDU_FACTOR +
					ampdu_factor)) - 1);

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	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);

1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215
	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);

1218 1219 1220 1221 1222 1223
	/*
	 * 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 */
1228 1229 1230 1231 1232 1233 1234 1235 1236
	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? */
1240 1241
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);

1242
	arvif->def_wep_key_idx = 0;
1243 1244 1245 1246 1247 1248 1249
}

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);

1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271
	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);

1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
	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);

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 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364
	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,
1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379
				   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;
}

1380
static void ath10k_regd_update(struct ath10k *ar)
1381 1382 1383 1384
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;

1385
	lockdep_assert_held(&ar->conf_mutex);
1386 1387 1388 1389 1390 1391

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

	regpair = ar->ath_common.regulatory.regpair;
1392

1393 1394 1395 1396 1397 1398 1399 1400 1401 1402
	/* 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);
1403
}
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1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415
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);
1417 1418 1419 1420 1421 1422
}

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

1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436
static u8 ath10k_tx_h_get_tid(struct ieee80211_hdr *hdr)
{
	if (ieee80211_is_mgmt(hdr->frame_control))
		return HTT_DATA_TX_EXT_TID_MGMT;

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

	if (!is_unicast_ether_addr(ieee80211_get_DA(hdr)))
		return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;

	return ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
}

1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar,
				  struct ieee80211_tx_info *info)
{
	if (info->control.vif)
		return ath10k_vif_to_arvif(info->control.vif)->vdev_id;

	if (ar->monitor_enabled)
		return ar->monitor_vdev_id;

	ath10k_warn("could not resolve vdev id\n");
	return 0;
}

1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464
/*
 * 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);
1465 1466 1467
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
1468 1469
}

1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493
static void ath10k_tx_wep_key_work(struct work_struct *work)
{
	struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
						wep_key_work);
	int ret, keyidx = arvif->def_wep_key_newidx;

	if (arvif->def_wep_key_idx == keyidx)
		return;

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

	ret = ath10k_wmi_vdev_set_param(arvif->ar,
					arvif->vdev_id,
					arvif->ar->wmi.vdev_param->def_keyid,
					keyidx);
	if (ret) {
		ath10k_warn("could not update wep keyidx (%d)\n", ret);
		return;
	}

	arvif->def_wep_key_idx = keyidx;
}

1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512
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;

	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;

1513
	if (key->keyidx == arvif->def_wep_key_idx)
1514 1515
		return;

1516 1517 1518 1519 1520
	/* FIXME: Most likely a few frames will be TXed with an old key. Simply
	 * queueing frames until key index is updated is not an option because
	 * sk_buff may need more processing to be done, e.g. offchannel */
	arvif->def_wep_key_newidx = key->keyidx;
	ieee80211_queue_work(ar->hw, &arvif->wep_key_work);
1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549
}

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;
1550
	int ret = 0;
1551

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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;
	}

1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575
	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)) {
1576 1577
		/* FW does not report tx status properly for NullFunc frames
		 * unless they are sent through mgmt tx path. mac80211 sends
1578 1579
		 * those frames when it detects link/beacon loss and depends
		 * on the tx status to be correct. */
1580
		ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
1581
	} else {
1582
		ret = ath10k_htt_tx(&ar->htt, skb);
1583
	}
1584

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exit:
1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628
	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",
1630 1631 1632 1633
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
1634
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
1635 1636 1637 1638 1639 1640

		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()? */
1642 1643 1644 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
			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);
	}
}

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 1701 1702 1703 1704 1705
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);
	}
}

1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761
/************/
/* 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);
1762 1763 1764 1765
		spin_lock_bh(&ar->data_lock);
		ar->scan.in_progress = false;
		ath10k_offchan_tx_purge(ar);
		spin_unlock_bh(&ar->data_lock);
1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
		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;
1829
	u8 tid, vdev_id;
1830 1831 1832 1833 1834 1835 1836

	/* 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 */
1837
	tid = ath10k_tx_h_get_tid(hdr);
1838
	vdev_id = ath10k_tx_h_get_vdev_id(ar, info);
1839

1840 1841 1842 1843 1844 1845 1846 1847
	/* 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);
	}
1848

1849
	ATH10K_SKB_CB(skb)->vdev_id = vdev_id;
1850
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
1851 1852 1853 1854 1855
	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;
1856
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871
		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.
 */
1872
void ath10k_halt(struct ath10k *ar)
1873 1874 1875 1876 1877
{
	lockdep_assert_held(&ar->conf_mutex);

	del_timer_sync(&ar->scan.timeout);
	ath10k_offchan_tx_purge(ar);
1878
	ath10k_mgmt_over_wmi_tx_purge(ar);
1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891
	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);
}

1892 1893 1894
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
1895
	int ret = 0;
1896

M
Michal Kazior 已提交
1897 1898
	mutex_lock(&ar->conf_mutex);

1899 1900
	if (ar->state != ATH10K_STATE_OFF &&
	    ar->state != ATH10K_STATE_RESTARTING) {
1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919
		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;
	}

1920 1921 1922 1923 1924
	if (ar->state == ATH10K_STATE_OFF)
		ar->state = ATH10K_STATE_ON;
	else if (ar->state == ATH10K_STATE_RESTARTING)
		ar->state = ATH10K_STATE_RESTARTED;

1925
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
1926 1927 1928 1929
	if (ret)
		ath10k_warn("could not enable WMI_PDEV_PARAM_PMF_QOS (%d)\n",
			    ret);

1930
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 0);
1931 1932 1933 1934
	if (ret)
		ath10k_warn("could not init WMI_PDEV_PARAM_DYNAMIC_BW (%d)\n",
			    ret);

1935 1936
	ath10k_regd_update(ar);

1937
exit:
M
Michal Kazior 已提交
1938
	mutex_unlock(&ar->conf_mutex);
1939 1940 1941 1942 1943 1944 1945
	return 0;
}

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

M
Michal Kazior 已提交
1946
	mutex_lock(&ar->conf_mutex);
1947 1948 1949
	if (ar->state == ATH10K_STATE_ON ||
	    ar->state == ATH10K_STATE_RESTARTED ||
	    ar->state == ATH10K_STATE_WEDGED)
1950
		ath10k_halt(ar);
1951

1952
	ar->state = ATH10K_STATE_OFF;
M
Michal Kazior 已提交
1953 1954
	mutex_unlock(&ar->conf_mutex);

1955 1956
	ath10k_mgmt_over_wmi_tx_purge(ar);

M
Michal Kazior 已提交
1957
	cancel_work_sync(&ar->offchan_tx_work);
1958
	cancel_work_sync(&ar->wmi_mgmt_tx_work);
1959
	cancel_work_sync(&ar->restart_work);
1960 1961
}

1962
static void ath10k_config_ps(struct ath10k *ar)
1963 1964
{
	struct ath10k_generic_iter ar_iter;
1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987

	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)
{
1988 1989 1990 1991 1992 1993 1994
	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
1995
		ath10k_dbg(ATH10K_DBG_MAC, "mac config channel %d mhz\n",
1996 1997 1998 1999 2000 2001
			   conf->chandef.chan->center_freq);
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
	}

2002 2003
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
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

	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;
2030
	u32 value;
2031
	int bit;
2032
	u32 vdev_param;
2033 2034 2035

	mutex_lock(&ar->conf_mutex);

2036 2037
	memset(arvif, 0, sizeof(*arvif));

2038 2039 2040
	arvif->ar = ar;
	arvif->vif = vif;

2041 2042
	INIT_WORK(&arvif->wep_key_work, ath10k_tx_wep_key_work);

2043 2044 2045
	if ((vif->type == NL80211_IFTYPE_MONITOR) && ar->monitor_present) {
		ath10k_warn("Only one monitor interface allowed\n");
		ret = -EBUSY;
2046
		goto err;
2047 2048 2049 2050 2051
	}

	bit = ffs(ar->free_vdev_map);
	if (bit == 0) {
		ret = -EBUSY;
2052
		goto err;
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
	}

	arvif->vdev_id = bit - 1;
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	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
2085
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d\n",
2086 2087 2088 2089 2090 2091
		   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);
2092
		goto err;
2093 2094
	}

2095
	ar->free_vdev_map &= ~BIT(arvif->vdev_id);
M
Michal Kazior 已提交
2096
	list_add(&arvif->list, &ar->arvifs);
2097

2098 2099
	vdev_param = ar->wmi.vdev_param->def_keyid;
	ret = ath10k_wmi_vdev_set_param(ar, 0, vdev_param,
2100
					arvif->def_wep_key_idx);
2101
	if (ret) {
2102
		ath10k_warn("Failed to set default keyid: %d\n", ret);
2103 2104
		goto err_vdev_delete;
	}
2105

2106 2107
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2108
					ATH10K_HW_TXRX_NATIVE_WIFI);
2109
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
2110
	if (ret && ret != -EOPNOTSUPP) {
2111
		ath10k_warn("Failed to set TX encap: %d\n", ret);
2112 2113
		goto err_vdev_delete;
	}
2114 2115 2116 2117 2118

	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);
2119
			goto err_vdev_delete;
2120 2121 2122 2123 2124 2125 2126 2127
		}
	}

	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);
2128
		if (ret) {
2129
			ath10k_warn("Failed to set RX wake policy: %d\n", ret);
2130 2131
			goto err_peer_delete;
		}
2132 2133 2134 2135 2136

		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);
2137
		if (ret) {
2138
			ath10k_warn("Failed to set TX wake thresh: %d\n", ret);
2139 2140
			goto err_peer_delete;
		}
2141 2142 2143 2144 2145

		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);
2146
		if (ret) {
2147
			ath10k_warn("Failed to set PSPOLL count: %d\n", ret);
2148 2149
			goto err_peer_delete;
		}
2150 2151
	}

2152
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
2153
	if (ret) {
2154 2155
		ath10k_warn("failed to set rts threshold for vdev %d (%d)\n",
			    arvif->vdev_id, ret);
2156 2157
		goto err_peer_delete;
	}
2158

2159
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
2160
	if (ret) {
2161 2162
		ath10k_warn("failed to set frag threshold for vdev %d (%d)\n",
			    arvif->vdev_id, ret);
2163 2164
		goto err_peer_delete;
	}
2165

2166 2167 2168 2169
	if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
		ar->monitor_present = true;

	mutex_unlock(&ar->conf_mutex);
2170 2171 2172 2173 2174 2175 2176 2177 2178
	return 0;

err_peer_delete:
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP)
		ath10k_wmi_peer_delete(ar, arvif->vdev_id, vif->addr);

err_vdev_delete:
	ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	ar->free_vdev_map &= ~BIT(arvif->vdev_id);
M
Michal Kazior 已提交
2179
	list_del(&arvif->list);
2180 2181 2182 2183

err:
	mutex_unlock(&ar->conf_mutex);

2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195
	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);

2196 2197
	cancel_work_sync(&arvif->wep_key_work);

2198 2199 2200 2201 2202 2203 2204
	spin_lock_bh(&ar->data_lock);
	if (arvif->beacon) {
		dev_kfree_skb_any(arvif->beacon);
		arvif->beacon = NULL;
	}
	spin_unlock_bh(&ar->data_lock);

2205
	ar->free_vdev_map |= 1 << (arvif->vdev_id);
M
Michal Kazior 已提交
2206
	list_del(&arvif->list);
2207 2208 2209 2210 2211 2212 2213 2214 2215

	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
2216 2217 2218
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev delete %d (remove interface)\n",
		   arvif->vdev_id);

2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259
	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
2260 2261 2262
		ath10k_dbg(ATH10K_DBG_MAC, "mac monitor %d start\n",
			   ar->monitor_vdev_id);

2263 2264 2265 2266 2267
		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
2268 2269 2270
		ath10k_dbg(ATH10K_DBG_MAC, "mac monitor %d stop\n",
			   ar->monitor_vdev_id);

2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286
		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;
2287
	u32 vdev_param, pdev_param;
2288 2289 2290 2291 2292 2293 2294 2295

	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;
2296 2297
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2298
						arvif->beacon_interval);
K
Kalle Valo 已提交
2299 2300 2301 2302
		ath10k_dbg(ATH10K_DBG_MAC,
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

2303 2304 2305 2306 2307 2308
		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
2309 2310 2311 2312
		ath10k_dbg(ATH10K_DBG_MAC,
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

2313 2314
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
2315 2316 2317 2318 2319 2320
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
			ath10k_warn("Failed to set beacon mode for VDEV: %d\n",
				    arvif->vdev_id);
	}

2321
	if (changed & BSS_CHANGED_BEACON_INFO) {
2322 2323
		arvif->dtim_period = info->dtim_period;

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

2328 2329
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345
						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)) {
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			ath10k_dbg(ATH10K_DBG_MAC,
				   "mac vdev %d create peer %pM\n",
				   arvif->vdev_id, info->bssid);

2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363
			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);

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				ath10k_dbg(ATH10K_DBG_MAC,
					   "mac vdev %d start %pM\n",
					   arvif->vdev_id, info->bssid);

				/* FIXME: check return value */
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				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;

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

2396 2397
		vdev_param = ar->wmi.vdev_param->enable_rtscts;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411
						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);

2415 2416
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429
						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);

2434 2435
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
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						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;
		}
2496 2497
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
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	}

	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);

2634 2635 2636 2637 2638 2639 2640 2641 2642
		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);
2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659
		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);

2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673
		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);

2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693
		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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2891 2892
	lockdep_assert_held(&arvif->ar->conf_mutex);

2893 2894 2895 2896 2897 2898 2899
	/* 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;

K
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2900 2901 2902
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d rts_threshold %d\n",
		   arvif->vdev_id, rts);

2903
	ar_iter->ret = ath10k_mac_set_rts(arvif, rts);
2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917
	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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Michal Kazior 已提交
2918
	ieee80211_iterate_active_interfaces_atomic(
2919
		hw, IEEE80211_IFACE_ITER_NORMAL,
M
Michal Kazior 已提交
2920
		ath10k_set_rts_iter, &ar_iter);
2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931
	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;

M
Michal Kazior 已提交
2932 2933
	lockdep_assert_held(&arvif->ar->conf_mutex);

2934 2935 2936 2937 2938 2939 2940
	/* 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;

K
Kalle Valo 已提交
2941 2942 2943
	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d fragmentation_threshold %d\n",
		   arvif->vdev_id, frag);

2944
	ar_iter->ret = ath10k_mac_set_frag(arvif, frag);
2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958
	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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Michal Kazior 已提交
2959
	ieee80211_iterate_active_interfaces_atomic(
2960
		hw, IEEE80211_IFACE_ITER_NORMAL,
M
Michal Kazior 已提交
2961
		ath10k_set_frag_iter, &ar_iter);
2962 2963 2964 2965 2966 2967 2968 2969
	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;
2970
	bool skip;
2971 2972 2973 2974 2975 2976 2977
	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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2978 2979
	mutex_lock(&ar->conf_mutex);

2980 2981 2982
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

2983
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
2984
			bool empty;
2985

2986
			spin_lock_bh(&ar->htt.tx_lock);
2987
			empty = (ar->htt.num_pending_tx == 0);
2988
			spin_unlock_bh(&ar->htt.tx_lock);
2989 2990 2991 2992

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

			(empty || skip);
2993
		}), ATH10K_FLUSH_TIMEOUT_HZ);
2994 2995

	if (ret <= 0 || skip)
2996
		ath10k_warn("tx not flushed\n");
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2997

2998
skip:
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	mutex_unlock(&ar->conf_mutex);
3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010
}

/* 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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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 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071
#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

3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087
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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3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122
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;
}

3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142
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,
3143
	.restart_complete		= ath10k_restart_complete,
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	.get_survey			= ath10k_get_survey,
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#ifdef CONFIG_PM
	.suspend			= ath10k_suspend,
	.resume				= ath10k_resume,
#endif
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 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192
};

#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[] = {
3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216
	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),
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
};

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)
3266 3267 3268 3269 3270 3271 3272 3273 3274
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288
};

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;
3289
	int i;
3290 3291 3292 3293

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

3294 3295 3296 3297 3298 3299 3300
	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);
	}
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 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362

	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;

3363
	for (i = 0; i < ar->num_rf_chains; i++)
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 3392 3393 3394 3395 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
		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);
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Michal Kazior 已提交
3422 3423 3424 3425
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443

		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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			ret = -ENOMEM;
			goto err_free;
3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475
		}

		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;

3476 3477 3478 3479
	/* 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;

3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508
	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;

3509 3510
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

3511 3512 3513 3514
	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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		goto err_free;
3516 3517 3518 3519 3520
	}

	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
		ath10k_err("ieee80211 registration failed: %d\n", ret);
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Michal Kazior 已提交
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		goto err_free;
3522 3523 3524 3525 3526 3527
	}

	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;
3529 3530 3531
	}

	return 0;
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err_unregister:
3534
	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);

3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550
	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);
}