path: root/drivers/net/wireless/ath/ath9k/htc_drv_init.c

/*
 * Copyright (c) 2010-2011 Atheros Communications 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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include "htc.h"

MODULE_AUTHOR("Atheros Communications");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Atheros driver 802.11n HTC based wireless devices");

static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
module_param_named(debug, ath9k_debug, uint, 0);
MODULE_PARM_DESC(debug, "Debugging mask");

int htc_modparam_nohwcrypt;
module_param_named(nohwcrypt, htc_modparam_nohwcrypt, int, 0444);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");

static int ath9k_htc_btcoex_enable;
module_param_named(btcoex_enable, ath9k_htc_btcoex_enable, int, 0444);
MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");

static int ath9k_ps_enable;
module_param_named(ps_enable, ath9k_ps_enable, int, 0444);
MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave");

int htc_use_dev_fw = 0;
module_param_named(use_dev_fw, htc_use_dev_fw, int, 0444);
MODULE_PARM_DESC(use_dev_fw, "Use development FW version");

#ifdef CONFIG_MAC80211_LEDS
int ath9k_htc_led_blink = 1;
module_param_named(blink, ath9k_htc_led_blink, int, 0444);
MODULE_PARM_DESC(blink, "Enable LED blink on activity");

static const struct ieee80211_tpt_blink ath9k_htc_tpt_blink[] = {
	{ .throughput = 0 * 1024, .blink_time = 334 },
	{ .throughput = 1 * 1024, .blink_time = 260 },
	{ .throughput = 5 * 1024, .blink_time = 220 },
	{ .throughput = 10 * 1024, .blink_time = 190 },
	{ .throughput = 20 * 1024, .blink_time = 170 },
	{ .throughput = 50 * 1024, .blink_time = 150 },
	{ .throughput = 70 * 1024, .blink_time = 130 },
	{ .throughput = 100 * 1024, .blink_time = 110 },
	{ .throughput = 200 * 1024, .blink_time = 80 },
	{ .throughput = 300 * 1024, .blink_time = 50 },
};
#endif

static void ath9k_htc_op_ps_wakeup(struct ath_common *common)
{
	ath9k_htc_ps_wakeup(common->priv);
}

static void ath9k_htc_op_ps_restore(struct ath_common *common)
{
	ath9k_htc_ps_restore(common->priv);
}

static const struct ath_ps_ops ath9k_htc_ps_ops = {
	.wakeup = ath9k_htc_op_ps_wakeup,
	.restore = ath9k_htc_op_ps_restore,
};

static int ath9k_htc_wait_for_target(struct ath9k_htc_priv *priv)
{
	unsigned long time_left;

	if (atomic_read(&priv->htc->tgt_ready) > 0) {
		atomic_dec(&priv->htc->tgt_ready);
		return 0;
	}

	/* Firmware can take up to 50ms to get ready, to be safe use 1 second */
	time_left = wait_for_completion_timeout(&priv->htc->target_wait, HZ);
	if (!time_left) {
		dev_err(priv->dev, "ath9k_htc: Target is unresponsive\n");
		return -ETIMEDOUT;
	}

	atomic_dec(&priv->htc->tgt_ready);

	return 0;
}

static void ath9k_deinit_priv(struct ath9k_htc_priv *priv)
{
	ath9k_hw_deinit(priv->ah);
	kfree(priv->ah);
	priv->ah = NULL;
}

static void ath9k_deinit_device(struct ath9k_htc_priv *priv)
{
	struct ieee80211_hw *hw = priv->hw;

	wiphy_rfkill_stop_polling(hw->wiphy);
	ath9k_deinit_leds(priv);
	ath9k_htc_deinit_debug(priv);
	ieee80211_unregister_hw(hw);
	ath9k_rx_cleanup(priv);
	ath9k_tx_cleanup(priv);
	ath9k_deinit_priv(priv);
}

static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv,
					u16 service_id,
					void (*tx) (void *,
						    struct sk_buff *,
						    enum htc_endpoint_id,
						    bool txok),
					enum htc_endpoint_id *ep_id)
{
	struct htc_service_connreq req;

	memset(&req, 0, sizeof(struct htc_service_connreq));

	req.service_id = service_id;
	req.ep_callbacks.priv = priv;
	req.ep_callbacks.rx = ath9k_htc_rxep;
	req.ep_callbacks.tx = tx;

	return htc_connect_service(priv->htc, &req, ep_id);
}

static int ath9k_init_htc_services(struct ath9k_htc_priv *priv, u16 devid,
				   u32 drv_info)
{
	int ret;

	/* WMI CMD*/
	ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep);
	if (ret)
		goto err;

	/* Beacon */
	ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep,
				    &priv->beacon_ep);
	if (ret)
		goto err;

	/* CAB */
	ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep,
				    &priv->cab_ep