[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-core.c

/******************************************************************************
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *****************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <net/mac80211.h>

#include "iwl-eeprom.h"
#include "iwl-debug.h"
#include "iwl-core.h"
#include "iwl-io.h"
#include "iwl-power.h"
#include "iwl-shared.h"
#include "iwl-agn.h"
#include "iwl-trans.h"

const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };

void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
{
	/*
	 * MULTI-FIXME
	 * See iwlagn_mac_channel_switch.
	 */
	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return;

	if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
		ieee80211_chswitch_done(ctx->vif, is_success);
}

#ifdef CONFIG_IWLWIFI_DEBUG
void iwl_print_rx_config_cmd(struct iwl_priv *priv,
			     enum iwl_rxon_context_id ctxid)
{
	struct iwl_rxon_context *ctx = &priv->contexts[ctxid];
	struct iwl_rxon_cmd *rxon = &ctx->staging;

	IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
	IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
	IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
	IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
			le32_to_cpu(rxon->filter_flags));
	IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
	IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
			rxon->ofdm_basic_rates);
	IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
	IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
	IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
	IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
}
#endif

void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
{
	unsigned int reload_msec;
	unsigned long reload_jiffies;

#ifdef CONFIG_IWLWIFI_DEBUG
	if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
		iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
#endif

	/* uCode is no longer loaded. */
	priv->ucode_loaded = false;

	/* Set the FW error flag -- cleared on iwl_down */
	set_bit(STATUS_FW_ERROR, &priv->status);

	/* Cancel currently queued command. */
	clear_bit(STATUS_HCMD_ACTIVE, &priv->shrd->status);

	iwl_abort_notification_waits(&priv->notif_wait);

	/* Keep the restart process from trying to send host
	 * commands by clearing the ready bit */
	clear_bit(STATUS_READY, &priv->status);

	wake_up(&trans(priv)->wait_command_queue);

	if (!ondemand) {
		/*
		 * If firmware keep reloading, then it indicate something
		 * serious wrong and firmware having problem to recover
		 * from it. Instead of keep trying which will fill the syslog
		 * and hang the system, let's just stop it
		 */
		reload_jiffies = jiffies;
		reload_msec = jiffies_to_msecs((long) reload_jiffies -
					(long) priv->reload_jiffies);
		priv->reload_jiffies = reload_jiffies;
		if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
			priv->reload_count++;
			if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
				IWL_ERR(priv, "BUG_ON, Stop restarting\n");
				return;
			}
		} else
			priv->reload_count = 0;
	}

	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
		if (iwlagn_mod_params.restart_fw) {
			IWL_DEBUG_FW_ERRORS(priv,
				  "Restarting adapter due to uCode error.\n");
			queue_work(priv->workqueue, &priv->restart);
		} else
			IWL_DEBUG_FW_ERRORS(priv,
				  "Detected FW error, but not restarting\n");
	}
}

int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
{
	int ret;
	s8 prev_tx_power;
	bool defer;
	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];

	lockdep_assert_held(&priv->mutex);

	if (priv->tx_power_user_lmt == tx_power && !force)
		return 0;

	if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
		IWL_WARN(priv,
			 "Requested user TXPOWER %d below lower limit %d.\n",
			 tx_power,
			 IWLAGN_TX_POWER_TARGET_POWER_MIN);
		return -EINVAL;
	}

	if (tx_power > priv->tx_power_device_lmt) {
		IWL_WARN(priv,
			"Requested user TXPOWER %d above upper limit %d.\n",
			 tx_power, priv->tx_power_device_lmt);
		return -EINVAL;
	}

	if (!iwl_is_ready_rf(priv))
		return -EIO;

	/* scan complete and commit_rxon use tx_power_next value,
	 * it always need to be updated for newest request */
	priv->tx_power_next = tx_power;

	/* do not set tx power when scanning or channel changing */
	defer = test_bit(STATUS_SCANNING, &priv->status) ||
		memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
	if (defer && !force) {
		IWL_DEBUG_INFO(priv, "Deferring tx power set\n");
		return 0;
	}

	prev_tx_power = priv->tx_power_user_lmt;
	priv->tx_power_user_lmt = tx_power;

	ret = iwlagn_send_tx_power(priv);

	/* if fail to set tx_power, restore the orig. tx power */
	if (ret) {
		priv->tx_power_user_lmt = prev_tx_power;
		priv->tx_power_next = prev_tx_power;
	}
	return ret;
}

void iwl_send_bt_config(struct iwl_priv *priv)
{
	struct iwl_bt_cmd bt_cmd = {
		.lead_time = BT_LEAD_TIME_DEF,
		.max_kill = BT_MAX_KILL_DEF,
		.kill_ack_mask = 0,
		.kill_cts_mask = 0,
	};

	if (!iwlagn_mod_params.bt_coex_active)
		bt_cmd.flags = BT_COEX_DISABLE;
	else
		bt_cmd.flags = BT_COEX_ENABLE;

	priv->bt_enable_flag = bt_cmd.flags;
	IWL_DEBUG_INFO(priv, "BT coex %s\n",
		(bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");

	if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
			     CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
		IWL_ERR(priv, "failed to send BT Coex Config\n");
}

int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
{
	struct iwl_statistics_cmd statistics_cmd = {
		.configuration_flags =
			clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
	};

	if (flags & CMD_ASYNC)
		return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
					      CMD_ASYNC,
					       sizeof(struct iwl_statistics_cmd),
					       &statistics_cmd);
	else
		return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
					CMD_SYNC,
					sizeof(struct iwl_statistics_cmd),
					&statistics_cmd);
}


#ifdef CONFIG_IWLWIFI_DEBUGFS

#define IWL_TRAFFIC_DUMP_SIZE	(IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)

void iwl_reset_traffic_log(struct iwl_priv *priv)
{
	priv->tx_traffic_idx = 0;
	priv->rx_traffic_idx = 0;
	if (priv->tx_traffic)
		memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
	if (priv->rx_traffic)
		memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
}

int iwl_alloc_traffic_mem(struct iwl_priv *priv)
{
	u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;

	if (iwl_have_debug_level(IWL_DL_TX)) {
		if (!priv->tx_traffic) {
			priv->tx_traffic =
				kzalloc(traffic_size, GFP_KERNEL);
			if (!priv->tx_traffic)
				return -ENOMEM;
		}
	}
	if (iwl_have_debug_level(IWL_DL_RX)) {
		if (!priv->rx_traffic) {
			priv->rx_traffic =
				kzalloc(traffic_size, GFP_KERNEL);
			if (!priv->rx_traffic)
				return -ENOMEM;
		}
	}
	iwl_reset_traffic_log(priv);
	return 0;
}

void iwl_free_traffic_mem(struct iwl_priv *priv)
{
	kfree(priv->tx_traffic);
	priv->tx_traffic = NULL;

	kfree(priv->rx_traffic);
	priv->rx_traffic = NULL;
}

void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
		      u16 length, struct ieee80211_hdr *header)
{
	__le16 fc;
	u16 len;

	if (likely(!iwl_have_debug_level(IWL_DL_TX)))
		return;

	if (!priv->tx_traffic)
		return;

	fc = header->frame_control;
	if (ieee80211_is_data(fc)) {
		len = (length > IWL_TRAFFIC_ENTRY_SIZE)
		       ? IWL_TRAFFIC_ENTRY_SIZE : length;
		memcpy((priv->tx_traffic +
		       (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
		       header, len);
		priv->tx_traffic_idx =
			(priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
	}
}

void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
		      u16 length, struct ieee80211_hdr *header)
{
	__le16 fc;
	u16 len;

	if (likely(!iwl_have_debug_level(IWL_DL_RX)))
		return;

	if (!priv->rx_traffic)
		return;

	fc = header->frame_control;
	if (ieee80211_is_data(fc)) {
		len = (length > IWL_TRAFFIC_ENTRY_SIZE)
		       ? IWL_TRAFFIC_ENTRY_SIZE : length;
		memcpy((priv->rx_traffic +
		       (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
		       header, len);
		priv->rx_traffic_idx =
			(priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
	}
}

const char *get_mgmt_string(int cmd)
{
	switch (cmd) {
		IWL_CMD(MANAGEMENT_ASSOC_REQ);
		IWL_CMD(MANAGEMENT_ASSOC_RESP);
		IWL_CMD(MANAGEMENT_REASSOC_REQ);
		IWL_CMD(MANAGEMENT_REASSOC_RESP);
		IWL_CMD(MANAGEMENT_PROBE_REQ);
		IWL_CMD(MANAGEMENT_PROBE_RESP);
		IWL_CMD(MANAGEMENT_BEACON);
		IWL_CMD(MANAGEMENT_ATIM);
		IWL_CMD(MANAGEMENT_DISASSOC);
		IWL_CMD(MANAGEMENT_AUTH);
		IWL_CMD(MANAGEMENT_DEAUTH);
		IWL_CMD(MANAGEMENT_ACTION);
	default:
		return "UNKNOWN";

	}
}

const char *get_ctrl_string(int cmd)
{
	switch (cmd) {
		IWL_CMD(CONTROL_BACK_REQ);
		IWL_CMD(CONTROL_BACK);
		IWL_CMD(CONTROL_PSPOLL);
		IWL_CMD(CONTROL_RTS);
		IWL_CMD(CONTROL_CTS);
		IWL_CMD(CONTROL_ACK);
		IWL_CMD(CONTROL_CFEND);
		IWL_CMD(CONTROL_CFENDACK);
	default:
		return "UNKNOWN";

	}
}

void iwl_clear_traffic_stats(struct iwl_priv *priv)
{
	memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
	memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
}

/*
 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
 * Use debugFs to display the rx/rx_statistics
 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
 * information will be recorded, but DATA pkt still will be recorded
 * for the reason of iwl_led.c need to control the led blinking based on
 * number of tx and rx data.
 *
 */
void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
{
	struct traffic_stats	*stats;

	if (is_tx)
		stats = &priv->tx_stats;
	else
		stats = &priv->rx_stats;

	if (ieee80211_is_mgmt(fc)) {
		switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
		case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
			stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
			stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
			stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
			stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
			stats->mgmt[MANAGEMENT_PROBE_REQ]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
			stats->mgmt[MANAGEMENT_PROBE_RESP]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_BEACON):
			stats->mgmt[MANAGEMENT_BEACON]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_ATIM):
			stats->mgmt[MANAGEMENT_ATIM]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
			stats->mgmt[MANAGEMENT_DISASSOC]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_AUTH):
			stats->mgmt[MANAGEMENT_AUTH]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
			stats->mgmt[MANAGEMENT_DEAUTH]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_ACTION):
			stats->mgmt[MANAGEMENT_ACTION]++;
			break;
		}
	} else if (ieee80211_is_ctl(fc)) {
		switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
		case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
			stats->ctrl[CONTROL_BACK_REQ]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_BACK):
			stats->ctrl[CONTROL_BACK]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
			stats->ctrl[CONTROL_PSPOLL]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_RTS):
			stats->ctrl[CONTROL_RTS]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_CTS):
			stats->ctrl[CONTROL_CTS]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_ACK):
			stats->ctrl[CONTROL_ACK]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_CFEND):
			stats->ctrl[CONTROL_CFEND]++;
			break;
		case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
			stats->ctrl[CONTROL_CFENDACK]++;
			break;
		}
	} else {
		/* data */
		stats->data_cnt++;
		stats->data_bytes += len;
	}
}
#endif

int iwl_force_rf_reset(struct iwl_priv *priv, bool external)
{
	struct iwl_rf_reset *rf_reset;

	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
		return -EAGAIN;

	if (!iwl_is_any_associated(priv)) {
		IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
		return -ENOLINK;
	}

	rf_reset = &priv->rf_reset;
	rf_reset->reset_request_count++;
	if (!external && rf_reset->last_reset_jiffies &&
	    time_after(rf_reset->last_reset_jiffies +
		       IWL_DELAY_NEXT_FORCE_RF_RESET, jiffies)) {
		IWL_DEBUG_INFO(priv, "RF reset rejected\n");
		rf_reset->reset_reject_count++;
		return -EAGAIN;
	}
	rf_reset->reset_success_count++;
	rf_reset->last_reset_jiffies = jiffies;

	/*
	 * There is no easy and better way to force reset the radio,
	 * the only known method is switching channel which will force to
	 * reset and tune the radio.
	 * Use internal short scan (single channel) operation to should
	 * achieve this objective.
	 * Driver should reset the radio when number of consecutive missed
	 * beacon, or any other uCode error condition detected.
	 */
	IWL_DEBUG_INFO(priv, "perform radio reset.\n");
	iwl_internal_short_hw_scan(priv);
	return 0;
}


int iwl_cmd_echo_test(struct iwl_priv *priv)
{
	int ret;
	struct iwl_host_cmd cmd = {
		.id = REPLY_ECHO,
		.len = { 0 },
		.flags = CMD_SYNC,
	};

	ret = iwl_dvm_send_cmd(priv, &cmd);
	if (ret)
		IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
	else
		IWL_DEBUG_INFO(priv, "echo testing pass\n");
	return ret;
}
Commit	Line	Data
df48c323	1	/******************************************************************************
df48c323 TW	2	*
	3	* GPL LICENSE SUMMARY
	4	*
4e318262	5	* Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
df48c323 TW	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of version 2 of the GNU General Public License as
	9	* published by the Free Software Foundation.
	10	*
	11	* This program is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
	19	* USA
	20	*
	21	* The full GNU General Public License is included in this distribution
	22	* in the file called LICENSE.GPL.
	23	*
	24	* Contact Information:
759ef89f	25	* Intel Linux Wireless <ilw@linux.intel.com>
df48c323 TW	26	* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	27	*****************************************************************************/
	28
	29	#include <linux/kernel.h>
	30	#include <linux/module.h>
d43c36dc	31	#include <linux/sched.h>
5a0e3ad6	32	#include <linux/slab.h>
1d0a082d	33	#include <net/mac80211.h>
df48c323	34
6bc913bd	35	#include "iwl-eeprom.h"
19335774	36	#include "iwl-debug.h"
df48c323	37	#include "iwl-core.h"
b661c819	38	#include "iwl-io.h"
5da4b55f	39	#include "iwl-power.h"
48f20d35	40	#include "iwl-shared.h"
9d143e9a	41	#include "iwl-agn.h"
bdfbf092	42	#include "iwl-trans.h"
df48c323	43
57bd1bea	44	const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
57bd1bea	45
79d07325 WYG	46	void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
79d07325 WYG	47	{
8bd413e6 JB	48	/*
8bd413e6 JB	49	* MULTI-FIXME
ade4c649	50	* See iwlagn_mac_channel_switch.
8bd413e6 JB	51	*/
	52	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
	53
83626404	54	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
79d07325 WYG	55	return;
79d07325 WYG	56
83626404	57	if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
8bd413e6	58	ieee80211_chswitch_done(ctx->vif, is_success);
79d07325	59	}
8ccde88a	60
8ccde88a	61	#ifdef CONFIG_IWLWIFI_DEBUG
14991a9d EG	62	void iwl_print_rx_config_cmd(struct iwl_priv *priv,
14991a9d EG	63	enum iwl_rxon_context_id ctxid)
8ccde88a	64	{
522376d2	65	struct iwl_rxon_context *ctx = &priv->contexts[ctxid];
246ed355	66	struct iwl_rxon_cmd *rxon = &ctx->staging;
8ccde88a	67
e1623446	68	IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
3d816c77	69	iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 ) rxon, sizeof(rxon));
e1623446 TW	70	IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
	71	IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
	72	IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
8ccde88a	73	le32_to_cpu(rxon->filter_flags));
e1623446 TW	74	IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
e1623446 TW	75	IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
8ccde88a	76	rxon->ofdm_basic_rates);
e1623446 TW	77	IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
	78	IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
	79	IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
	80	IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
8ccde88a	81	}
6686d17e	82	#endif
e649437f	83
b7e21bf0	84	void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
8ccde88a	85	{
491bc292 WYG	86	unsigned int reload_msec;
	87	unsigned long reload_jiffies;
	88
3e6895c5	89	#ifdef CONFIG_IWLWIFI_DEBUG
a8bceb39	90	if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
3e6895c5 EG	91	iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
	92	#endif
	93
8f7ffbe2 DS	94	/* uCode is no longer loaded. */
	95	priv->ucode_loaded = false;
	96
8ccde88a	97	/* Set the FW error flag -- cleared on iwl_down */
17acd0b6	98	set_bit(STATUS_FW_ERROR, &priv->status);
8ccde88a SO	99
8ccde88a SO	100	/* Cancel currently queued command. */
63013ae3	101	clear_bit(STATUS_HCMD_ACTIVE, &priv->shrd->status);
8ccde88a	102
4bd14dd5	103	iwl_abort_notification_waits(&priv->notif_wait);
e74fe233	104
e649437f JB	105	/* Keep the restart process from trying to send host
e649437f JB	106	* commands by clearing the ready bit */
83626404	107	clear_bit(STATUS_READY, &priv->status);
e649437f	108
69a10b29	109	wake_up(&trans(priv)->wait_command_queue);
e649437f JB	110
	111	if (!ondemand) {
	112	/*
	113	* If firmware keep reloading, then it indicate something
	114	* serious wrong and firmware having problem to recover
	115	* from it. Instead of keep trying which will fill the syslog
	116	* and hang the system, let's just stop it
	117	*/
	118	reload_jiffies = jiffies;
	119	reload_msec = jiffies_to_msecs((long) reload_jiffies -
	120	(long) priv->reload_jiffies);
	121	priv->reload_jiffies = reload_jiffies;
	122	if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
	123	priv->reload_count++;
	124	if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
	125	IWL_ERR(priv, "BUG_ON, Stop restarting\n");
	126	return;
	127	}
	128	} else
	129	priv->reload_count = 0;
	130	}
	131
83626404	132	if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
9d143e9a	133	if (iwlagn_mod_params.restart_fw) {
9ca06f0a	134	IWL_DEBUG_FW_ERRORS(priv,
e649437f	135	"Restarting adapter due to uCode error.\n");
1ee158d8	136	queue_work(priv->workqueue, &priv->restart);
e649437f	137	} else
9ca06f0a	138	IWL_DEBUG_FW_ERRORS(priv,
e649437f JB	139	"Detected FW error, but not restarting\n");
	140	}
	141	}
	142
630fe9b6 TW	143	int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
630fe9b6 TW	144	{
a25a66ac SG	145	int ret;
a25a66ac SG	146	s8 prev_tx_power;
f844a709 SG	147	bool defer;
f844a709 SG	148	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
a25a66ac	149
b1eea297	150	lockdep_assert_held(&priv->mutex);
a25a66ac SG	151
	152	if (priv->tx_power_user_lmt == tx_power && !force)
	153	return 0;
	154
b744cb79 WYG	155	if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
	156	IWL_WARN(priv,
	157	"Requested user TXPOWER %d below lower limit %d.\n",
daf518de	158	tx_power,
b744cb79	159	IWLAGN_TX_POWER_TARGET_POWER_MIN);
630fe9b6 TW	160	return -EINVAL;
	161	}
	162
dc1b0973	163	if (tx_power > priv->tx_power_device_lmt) {
08f2d58d WYG	164	IWL_WARN(priv,
08f2d58d WYG	165	"Requested user TXPOWER %d above upper limit %d.\n",
dc1b0973	166	tx_power, priv->tx_power_device_lmt);
630fe9b6 TW	167	return -EINVAL;
	168	}
	169
83626404	170	if (!iwl_is_ready_rf(priv))
a25a66ac	171	return -EIO;
630fe9b6	172
f844a709 SG	173	/* scan complete and commit_rxon use tx_power_next value,
f844a709 SG	174	* it always need to be updated for newest request */
a25a66ac	175	priv->tx_power_next = tx_power;
f844a709 SG	176
f844a709 SG	177	/* do not set tx power when scanning or channel changing */
83626404	178	defer = test_bit(STATUS_SCANNING, &priv->status) \|\|
f844a709 SG	179	memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
	180	if (defer && !force) {
	181	IWL_DEBUG_INFO(priv, "Deferring tx power set\n");
a25a66ac	182	return 0;
5eadd94b	183	}
630fe9b6	184
a25a66ac SG	185	prev_tx_power = priv->tx_power_user_lmt;
	186	priv->tx_power_user_lmt = tx_power;
	187
5beaaf37	188	ret = iwlagn_send_tx_power(priv);
a25a66ac SG	189
	190	/* if fail to set tx_power, restore the orig. tx power */
	191	if (ret) {
	192	priv->tx_power_user_lmt = prev_tx_power;
	193	priv->tx_power_next = prev_tx_power;
	194	}
630fe9b6 TW	195	return ret;
630fe9b6 TW	196	}
630fe9b6	197
65b52bde	198	void iwl_send_bt_config(struct iwl_priv *priv)
17f841cd SO	199	{
17f841cd SO	200	struct iwl_bt_cmd bt_cmd = {
456d0f76 WYG	201	.lead_time = BT_LEAD_TIME_DEF,
456d0f76 WYG	202	.max_kill = BT_MAX_KILL_DEF,
17f841cd SO	203	.kill_ack_mask = 0,
	204	.kill_cts_mask = 0,
	205	};
	206
b60eec9b	207	if (!iwlagn_mod_params.bt_coex_active)
06702a73 WYG	208	bt_cmd.flags = BT_COEX_DISABLE;
	209	else
	210	bt_cmd.flags = BT_COEX_ENABLE;
	211
f21dd005	212	priv->bt_enable_flag = bt_cmd.flags;
06702a73 WYG	213	IWL_DEBUG_INFO(priv, "BT coex %s\n",
	214	(bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
	215
e10a0533	216	if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
e419d62d	217	CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
65b52bde	218	IWL_ERR(priv, "failed to send BT Coex Config\n");
17f841cd	219	}
17f841cd	220
ef8d5529	221	int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
49ea8596	222	{
ef8d5529 WYG	223	struct iwl_statistics_cmd statistics_cmd = {
	224	.configuration_flags =
	225	clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
49ea8596	226	};
ef8d5529 WYG	227
ef8d5529 WYG	228	if (flags & CMD_ASYNC)
e10a0533	229	return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
e419d62d	230	CMD_ASYNC,
ef8d5529	231	sizeof(struct iwl_statistics_cmd),
e419d62d	232	&statistics_cmd);
ef8d5529	233	else
e10a0533	234	return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
e419d62d	235	CMD_SYNC,
ef8d5529 WYG	236	sizeof(struct iwl_statistics_cmd),
ef8d5529 WYG	237	&statistics_cmd);
49ea8596	238	}
7e8c519e	239
488829f1	240
727882d6	241
d8052319	242
20594eb0 WYG	243	#ifdef CONFIG_IWLWIFI_DEBUGFS
	244
	245	#define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
	246
	247	void iwl_reset_traffic_log(struct iwl_priv *priv)
	248	{
	249	priv->tx_traffic_idx = 0;
	250	priv->rx_traffic_idx = 0;
	251	if (priv->tx_traffic)
	252	memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
	253	if (priv->rx_traffic)
	254	memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
	255	}
	256
	257	int iwl_alloc_traffic_mem(struct iwl_priv *priv)
	258	{
	259	u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
	260
a8bceb39	261	if (iwl_have_debug_level(IWL_DL_TX)) {
20594eb0 WYG	262	if (!priv->tx_traffic) {
	263	priv->tx_traffic =
	264	kzalloc(traffic_size, GFP_KERNEL);
	265	if (!priv->tx_traffic)
	266	return -ENOMEM;
	267	}
	268	}
a8bceb39	269	if (iwl_have_debug_level(IWL_DL_RX)) {
20594eb0 WYG	270	if (!priv->rx_traffic) {
	271	priv->rx_traffic =
	272	kzalloc(traffic_size, GFP_KERNEL);
	273	if (!priv->rx_traffic)
	274	return -ENOMEM;
	275	}
	276	}
	277	iwl_reset_traffic_log(priv);
	278	return 0;
	279	}
20594eb0 WYG	280
	281	void iwl_free_traffic_mem(struct iwl_priv *priv)
	282	{
	283	kfree(priv->tx_traffic);
	284	priv->tx_traffic = NULL;
	285
	286	kfree(priv->rx_traffic);
	287	priv->rx_traffic = NULL;
	288	}
20594eb0 WYG	289
	290	void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
	291	u16 length, struct ieee80211_hdr *header)
	292	{
	293	__le16 fc;
	294	u16 len;
	295
a8bceb39	296	if (likely(!iwl_have_debug_level(IWL_DL_TX)))
20594eb0 WYG	297	return;
	298
	299	if (!priv->tx_traffic)
	300	return;
	301
	302	fc = header->frame_control;
	303	if (ieee80211_is_data(fc)) {
	304	len = (length > IWL_TRAFFIC_ENTRY_SIZE)
	305	? IWL_TRAFFIC_ENTRY_SIZE : length;
	306	memcpy((priv->tx_traffic +
	307	(priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
	308	header, len);
	309	priv->tx_traffic_idx =
	310	(priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
	311	}
	312	}
20594eb0 WYG	313
	314	void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
	315	u16 length, struct ieee80211_hdr *header)
	316	{
	317	__le16 fc;
	318	u16 len;
	319
a8bceb39	320	if (likely(!iwl_have_debug_level(IWL_DL_RX)))
20594eb0 WYG	321	return;
	322
	323	if (!priv->rx_traffic)
	324	return;
	325
	326	fc = header->frame_control;
	327	if (ieee80211_is_data(fc)) {
	328	len = (length > IWL_TRAFFIC_ENTRY_SIZE)
	329	? IWL_TRAFFIC_ENTRY_SIZE : length;
	330	memcpy((priv->rx_traffic +
	331	(priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
	332	header, len);
	333	priv->rx_traffic_idx =
	334	(priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
	335	}
	336	}
22fdf3c9 WYG	337
	338	const char *get_mgmt_string(int cmd)
	339	{
	340	switch (cmd) {
	341	IWL_CMD(MANAGEMENT_ASSOC_REQ);
	342	IWL_CMD(MANAGEMENT_ASSOC_RESP);
	343	IWL_CMD(MANAGEMENT_REASSOC_REQ);
	344	IWL_CMD(MANAGEMENT_REASSOC_RESP);
	345	IWL_CMD(MANAGEMENT_PROBE_REQ);
	346	IWL_CMD(MANAGEMENT_PROBE_RESP);
	347	IWL_CMD(MANAGEMENT_BEACON);
	348	IWL_CMD(MANAGEMENT_ATIM);
	349	IWL_CMD(MANAGEMENT_DISASSOC);
	350	IWL_CMD(MANAGEMENT_AUTH);
	351	IWL_CMD(MANAGEMENT_DEAUTH);
	352	IWL_CMD(MANAGEMENT_ACTION);
	353	default:
	354	return "UNKNOWN";
	355
	356	}
	357	}
	358
	359	const char *get_ctrl_string(int cmd)
	360	{
	361	switch (cmd) {
	362	IWL_CMD(CONTROL_BACK_REQ);
	363	IWL_CMD(CONTROL_BACK);
	364	IWL_CMD(CONTROL_PSPOLL);
	365	IWL_CMD(CONTROL_RTS);
	366	IWL_CMD(CONTROL_CTS);
	367	IWL_CMD(CONTROL_ACK);
	368	IWL_CMD(CONTROL_CFEND);
	369	IWL_CMD(CONTROL_CFENDACK);
	370	default:
	371	return "UNKNOWN";
	372
	373	}
	374	}
	375
7163b8a4	376	void iwl_clear_traffic_stats(struct iwl_priv *priv)
22fdf3c9 WYG	377	{
22fdf3c9 WYG	378	memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
22fdf3c9 WYG	379	memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
	380	}
	381
	382	/*
	383	* if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
	384	* record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
	385	* Use debugFs to display the rx/rx_statistics
	386	* if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
	387	* information will be recorded, but DATA pkt still will be recorded
	388	* for the reason of iwl_led.c need to control the led blinking based on
	389	* number of tx and rx data.
	390	*
	391	*/
	392	void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
	393	{
	394	struct traffic_stats *stats;
	395
	396	if (is_tx)
	397	stats = &priv->tx_stats;
	398	else
	399	stats = &priv->rx_stats;
	400
	401	if (ieee80211_is_mgmt(fc)) {
	402	switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
	403	case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
	404	stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
	405	break;
	406	case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
	407	stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
	408	break;
	409	case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
	410	stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
	411	break;
	412	case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
	413	stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
	414	break;
	415	case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
	416	stats->mgmt[MANAGEMENT_PROBE_REQ]++;
	417	break;
	418	case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
	419	stats->mgmt[MANAGEMENT_PROBE_RESP]++;
	420	break;
	421	case cpu_to_le16(IEEE80211_STYPE_BEACON):
	422	stats->mgmt[MANAGEMENT_BEACON]++;
	423	break;
	424	case cpu_to_le16(IEEE80211_STYPE_ATIM):
	425	stats->mgmt[MANAGEMENT_ATIM]++;
	426	break;
	427	case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
	428	stats->mgmt[MANAGEMENT_DISASSOC]++;
	429	break;
	430	case cpu_to_le16(IEEE80211_STYPE_AUTH):
	431	stats->mgmt[MANAGEMENT_AUTH]++;
	432	break;
	433	case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
	434	stats->mgmt[MANAGEMENT_DEAUTH]++;
	435	break;
	436	case cpu_to_le16(IEEE80211_STYPE_ACTION):
	437	stats->mgmt[MANAGEMENT_ACTION]++;
	438	break;
	439	}
	440	} else if (ieee80211_is_ctl(fc)) {
	441	switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
	442	case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
443	stats->ctrl[CONTROL_BACK_REQ]++;
444	break;
445	case cpu_to_le16(IEEE80211_STYPE_BACK):
446	stats->ctrl[CONTROL_BACK]++;
447	break;
448	case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
449	stats->ctrl[CONTROL_PSPOLL]++;
450	break;
451	case cpu_to_le16(IEEE80211_STYPE_RTS):
452	stats->ctrl[CONTROL_RTS]++;
453	break;
454	case cpu_to_le16(IEEE80211_STYPE_CTS):
455	stats->ctrl[CONTROL_CTS]++;
456	break;
457	case cpu_to_le16(IEEE80211_STYPE_ACK):
458	stats->ctrl[CONTROL_ACK]++;
459	break;
460	case cpu_to_le16(IEEE80211_STYPE_CFEND):
461	stats->ctrl[CONTROL_CFEND]++;
462	break;
463	case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
464	stats->ctrl[CONTROL_CFENDACK]++;
465	break;
466	}
467	} else {
468	/* data */
469	stats->data_cnt++;
470	stats->data_bytes += len;
471	}
472	}
20594eb0 WYG	473	#endif
20594eb0 WYG	474
48dffd39	475	int iwl_force_rf_reset(struct iwl_priv *priv, bool external)
afbdd69a	476	{
48dffd39 JB	477	struct iwl_rf_reset *rf_reset;
48dffd39 JB	478
83626404	479	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
48dffd39	480	return -EAGAIN;
afbdd69a	481
246ed355	482	if (!iwl_is_any_associated(priv)) {
afbdd69a	483	IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
48dffd39	484	return -ENOLINK;
afbdd69a	485	}
48dffd39 JB	486
	487	rf_reset = &priv->rf_reset;
	488	rf_reset->reset_request_count++;
	489	if (!external && rf_reset->last_reset_jiffies &&
	490	time_after(rf_reset->last_reset_jiffies +
	491	IWL_DELAY_NEXT_FORCE_RF_RESET, jiffies)) {
	492	IWL_DEBUG_INFO(priv, "RF reset rejected\n");
	493	rf_reset->reset_reject_count++;
	494	return -EAGAIN;
	495	}
	496	rf_reset->reset_success_count++;
	497	rf_reset->last_reset_jiffies = jiffies;
	498
afbdd69a WYG	499	/*
	500	* There is no easy and better way to force reset the radio,
	501	* the only known method is switching channel which will force to
	502	* reset and tune the radio.
	503	* Use internal short scan (single channel) operation to should
	504	* achieve this objective.
	505	* Driver should reset the radio when number of consecutive missed
	506	* beacon, or any other uCode error condition detected.
	507	*/
	508	IWL_DEBUG_INFO(priv, "perform radio reset.\n");
	509	iwl_internal_short_hw_scan(priv);
a93e7973 WYG	510	return 0;
a93e7973 WYG	511	}
b74e31a9	512
d4daaea6	513
317d09f7 WYG	514	int iwl_cmd_echo_test(struct iwl_priv *priv)
317d09f7 WYG	515	{
7e4005cc	516	int ret;
317d09f7 WYG	517	struct iwl_host_cmd cmd = {
317d09f7 WYG	518	.id = REPLY_ECHO,
89db3b97	519	.len = { 0 },
317d09f7 WYG	520	.flags = CMD_SYNC,
	521	};
	522
e10a0533	523	ret = iwl_dvm_send_cmd(priv, &cmd);
7e4005cc WYG	524	if (ret)
	525	IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
	526	else
	527	IWL_DEBUG_INFO(priv, "echo testing pass\n");
	528	return ret;
317d09f7	529	}