iwlwifi: split the drivers for agn and legacy devices 3945/4965

Intel WiFi devices 3945 and 4965 now have their own driver in the folder

	drivers/net/wireless/iwlegacy

Add support to build these drivers independently of the driver for
AGN devices. Selecting the 3945 builds iwl3945.ko and iwl_legacy.ko,
and selecting the 4965 builds iwl4965.ko and iwl_legacy.ko. iwl-legacy.ko
contains code shared between both devices.

The 3945 is an ABG/BG device, with no support for 802.11n. The 4965 is a 2x3
ABGN device.

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Acked-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

1 files changed, 2188 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlegacy/iwl-4965.c b/drivers/net/wireless/iwlegacy/iwl-4965.c
new file mode 100644
index 0000000..080444c
--- /dev/null
+++ b/drivers/net/wireless/iwlegacy/iwl-4965.c
@@ -0,0 +1,2188 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2011 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.
+ *
+ * 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/init.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <net/mac80211.h>
+#include <linux/etherdevice.h>
+#include <asm/unaligned.h>
+
+#include "iwl-eeprom.h"
+#include "iwl-dev.h"
+#include "iwl-core.h"
+#include "iwl-io.h"
+#include "iwl-helpers.h"
+#include "iwl-4965-calib.h"
+#include "iwl-sta.h"
+#include "iwl-4965-led.h"
+#include "iwl-4965.h"
+#include "iwl-4965-debugfs.h"
+
+static int iwl4965_send_tx_power(struct iwl_priv *priv);
+static int iwl4965_hw_get_temperature(struct iwl_priv *priv);
+
+/* Highest firmware API version supported */
+#define IWL4965_UCODE_API_MAX 2
+
+/* Lowest firmware API version supported */
+#define IWL4965_UCODE_API_MIN 2
+
+#define IWL4965_FW_PRE "iwlwifi-4965-"
+#define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode"
+#define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api)
+
+/* check contents of special bootstrap uCode SRAM */
+static int iwl4965_verify_bsm(struct iwl_priv *priv)
+{
+	__le32 *image = priv->ucode_boot.v_addr;
+	u32 len = priv->ucode_boot.len;
+	u32 reg;
+	u32 val;
+
+	IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
+
+	/* verify BSM SRAM contents */
+	val = iwl_legacy_read_prph(priv, BSM_WR_DWCOUNT_REG);
+	for (reg = BSM_SRAM_LOWER_BOUND;
+	     reg < BSM_SRAM_LOWER_BOUND + len;
+	     reg += sizeof(u32), image++) {
+		val = iwl_legacy_read_prph(priv, reg);
+		if (val != le32_to_cpu(*image)) {
+			IWL_ERR(priv, "BSM uCode verification failed at "
+				  "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
+				  BSM_SRAM_LOWER_BOUND,
+				  reg - BSM_SRAM_LOWER_BOUND, len,
+				  val, le32_to_cpu(*image));
+			return -EIO;
+		}
+	}
+
+	IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
+
+	return 0;
+}
+
+/**
+ * iwl4965_load_bsm - Load bootstrap instructions
+ *
+ * BSM operation:
+ *
+ * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
+ * in special SRAM that does not power down during RFKILL.  When powering back
+ * up after power-saving sleeps (or during initial uCode load), the BSM loads
+ * the bootstrap program into the on-board processor, and starts it.
+ *
+ * The bootstrap program loads (via DMA) instructions and data for a new
+ * program from host DRAM locations indicated by the host driver in the
+ * BSM_DRAM_* registers.  Once the new program is loaded, it starts
+ * automatically.
+ *
+ * When initializing the NIC, the host driver points the BSM to the
+ * "initialize" uCode image.  This uCode sets up some internal data, then
+ * notifies host via "initialize alive" that it is complete.
+ *
+ * The host then replaces the BSM_DRAM_* pointer values to point to the
+ * normal runtime uCode instructions and a backup uCode data cache buffer
+ * (filled initially with starting data values for the on-board processor),
+ * then triggers the "initialize" uCode to load and launch the runtime uCode,
+ * which begins normal operation.
+ *
+ * When doing a power-save shutdown, runtime uCode saves data SRAM into
+ * the backup data cache in DRAM before SRAM is powered down.
+ *
+ * When powering back up, the BSM loads the bootstrap program.  This reloads
+ * the runtime uCode instructions and the backup data cache into SRAM,
+ * and re-launches the runtime uCode from where it left off.
+ */
+static int iwl4965_load_bsm(struct iwl_priv *priv)
+{
+	__le32 *image = priv->ucode_boot.v_addr;
+	u32 len = priv->ucode_boot.len;
+	dma_addr_t pinst;
+	dma_addr_t pdata;
+	u32 inst_len;
+	u32 data_len;
+	int i;
+	u32 done;
+	u32 reg_offset;
+	int ret;
+
+	IWL_DEBUG_INFO(priv, "Begin load bsm\n");
+
+	priv->ucode_type = UCODE_RT;
+
+	/* make sure bootstrap program is no larger than BSM's SRAM size */
+	if (len > IWL49_MAX_BSM_SIZE)
+		return -EINVAL;
+
+	/* Tell bootstrap uCode where to find the "Initialize" uCode
+	 *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
+	 * NOTE:  iwl_init_alive_start() will replace these values,
+	 *        after the "initialize" uCode has run, to point to
+	 *        runtime/protocol instructions and backup data cache.
+	 */
+	pinst = priv->ucode_init.p_addr >> 4;
+	pdata = priv->ucode_init_data.p_addr >> 4;
+	inst_len = priv->ucode_init.len;
+	data_len = priv->ucode_init_data.len;
+
+	iwl_legacy_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
+	iwl_legacy_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
+	iwl_legacy_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
+	iwl_legacy_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
+
+	/* Fill BSM memory with bootstrap instructions */
+	for (reg_offset = BSM_SRAM_LOWER_BOUND;
+	     reg_offset < BSM_SRAM_LOWER_BOUND + len;
+	     reg_offset += sizeof(u32), image++)
+		_iwl_legacy_write_prph(priv, reg_offset, le32_to_cpu(*image));
+
+	ret = iwl4965_verify_bsm(priv);
+	if (ret)
+		return ret;
+
+	/* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
+	iwl_legacy_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
+	iwl_legacy_write_prph(priv,
+			BSM_WR_MEM_DST_REG, IWL49_RTC_INST_LOWER_BOUND);
+	iwl_legacy_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
+
+	/* Load bootstrap code into instruction SRAM now,
+	 *   to prepare to load "initialize" uCode */
+	iwl_legacy_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
+
+	/* Wait for load of bootstrap uCode to finish */
+	for (i = 0; i < 100; i++) {
+		done = iwl_legacy_read_prph(priv, BSM_WR_CTRL_REG);
+		if (!(done & BSM_WR_CTRL_REG_BIT_START))
+			break;
+		udelay(10);
+	}
+	if (i < 100)
+		IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
+	else {
+		IWL_ERR(priv, "BSM write did not complete!\n");
+		return -EIO;
+	}
+
+	/* Enable future boot loads whenever power management unit triggers it
+	 *   (e.g. when powering back up after power-save shutdown) */
+	iwl_legacy_write_prph(priv,
+			BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
+
+
+	return 0;
+}
+
+/**
+ * iwl4965_set_ucode_ptrs - Set uCode address location
+ *
+ * Tell initialization uCode where to find runtime uCode.
+ *
+ * BSM registers initially contain pointers to initialization uCode.
+ * We need to replace them to load runtime uCode inst and data,
+ * and to save runtime data when powering down.
+ */
+static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
+{
+	dma_addr_t pinst;
+	dma_addr_t pdata;
+	int ret = 0;
+
+	/* bits 35:4 for 4965 */
+	pinst = priv->ucode_code.p_addr >> 4;
+	pdata = priv->ucode_data_backup.p_addr >> 4;
+
+	/* Tell bootstrap uCode where to find image to load */
+	iwl_legacy_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
+	iwl_legacy_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
+	iwl_legacy_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
+				 priv->ucode_data.len);
+
+	/* Inst byte count must be last to set up, bit 31 signals uCode
+	 *   that all new ptr/size info is in place */
+	iwl_legacy_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
+				 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
+	IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
+
+	return ret;
+}
+
+/**
+ * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
+ *
+ * Called after REPLY_ALIVE notification received from "initialize" uCode.
+ *
+ * The 4965 "initialize" ALIVE reply contains calibration data for:
+ *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
+ *   (3945 does not contain this data).
+ *
+ * Tell "initialize" uCode to go ahead and load the runtime uCode.
+*/
+static void iwl4965_init_alive_start(struct iwl_priv *priv)
+{
+	/* Bootstrap uCode has loaded initialize uCode ... verify inst image.
+	 * This is a paranoid check, because we would not have gotten the
+	 * "initialize" alive if code weren't properly loaded.  */
+	if (iwl4965_verify_ucode(priv)) {
+		/* Runtime instruction load was bad;
+		 * take it all the way back down so we can try again */
+		IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
+		goto restart;
+	}
+
+	/* Calculate temperature */
+	priv->temperature = iwl4965_hw_get_temperature(priv);
+
+	/* Send pointers to protocol/runtime uCode image ... init code will
+	 * load and launch runtime uCode, which will send us another "Alive"
+	 * notification. */
+	IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
+	if (iwl4965_set_ucode_ptrs(priv)) {
+		/* Runtime instruction load won't happen;
+		 * take it all the way back down so we can try again */
+		IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
+		goto restart;
+	}
+	return;
+
+restart:
+	queue_work(priv->workqueue, &priv->restart);
+}
+
+static bool iw4965_is_ht40_channel(__le32 rxon_flags)
+{
+	int chan_mod = le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK)
+				    >> RXON_FLG_CHANNEL_MODE_POS;
+	return ((chan_mod == CHANNEL_MODE_PURE_40) ||
+		  (chan_mod == CHANNEL_MODE_MIXED));
+}
+
+static void iwl4965_nic_config(struct iwl_priv *priv)
+{
+	unsigned long flags;
+	u16 radio_cfg;
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	radio_cfg = iwl_legacy_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
+
+	/* write radio config values to register */
+	if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
+		iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+			    EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
+			    EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
+			    EEPROM_RF_CFG_DASH_MSK(radio_cfg));
+
+	/* set CSR_HW_CONFIG_REG for uCode use */
+	iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+		    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
+		    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
+
+	priv->calib_info = (struct iwl_eeprom_calib_info *)
+		iwl_legacy_eeprom_query_addr(priv,
+				EEPROM_4965_CALIB_TXPOWER_OFFSET);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+/* Reset differential Rx gains in NIC to prepare for chain noise calibration.
+ * Called after every association, but this runs only once!
+ *  ... once chain noise is calibrated the first time, it's good forever.  */
+static void iwl4965_chain_noise_reset(struct iwl_priv *priv)
+{
+	struct iwl_chain_noise_data *data = &(priv->chain_noise_data);
+
+	if ((data->state == IWL_CHAIN_NOISE_ALIVE) &&
+	    iwl_legacy_is_any_associated(priv)) {
+		struct iwl_calib_diff_gain_cmd cmd;
+
+		/* clear data for chain noise calibration algorithm */
+		data->chain_noise_a = 0;
+		data->chain_noise_b = 0;
+		data->chain_noise_c = 0;
+		data->chain_signal_a = 0;
+		data->chain_signal_b = 0;
+		data->chain_signal_c = 0;
+		data->beacon_count = 0;
+
+		memset(&cmd, 0, sizeof(cmd));
+		cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
+		cmd.diff_gain_a = 0;
+		cmd.diff_gain_b = 0;
+		cmd.diff_gain_c = 0;
+		if (iwl_legacy_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
+				 sizeof(cmd), &cmd))
+			IWL_ERR(priv,
+				"Could not send REPLY_PHY_CALIBRATION_CMD\n");
+		data->state = IWL_CHAIN_NOISE_ACCUMULATE;
+		IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
+	}
+}
+
+static struct iwl_sensitivity_ranges iwl4965_sensitivity = {
+	.min_nrg_cck = 97,
+	.max_nrg_cck = 0, /* not used, set to 0 */
+
+	.auto_corr_min_ofdm = 85,
+	.auto_corr_min_ofdm_mrc = 170,
+	.auto_corr_min_ofdm_x1 = 105,
+	.auto_corr_min_ofdm_mrc_x1 = 220,
+
+	.auto_corr_max_ofdm = 120,
+	.auto_corr_max_ofdm_mrc = 210,
+	.auto_corr_max_ofdm_x1 = 140,
+	.auto_corr_max_ofdm_mrc_x1 = 270,
+
+	.auto_corr_min_cck = 125,
+	.auto_corr_max_cck = 200,
+	.auto_corr_min_cck_mrc = 200,
+	.auto_corr_max_cck_mrc = 400,
+
+	.nrg_th_cck = 100,
+	.nrg_th_ofdm = 100,
+
+	.barker_corr_th_min = 190,
+	.barker_corr_th_min_mrc = 390,
+	.nrg_th_cca = 62,
+};
+
+static void iwl4965_set_ct_threshold(struct iwl_priv *priv)
+{
+	/* want Kelvin */
+	priv->hw_params.ct_kill_threshold =
+		CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY);
+}
+
+/**
+ * iwl4965_hw_set_hw_params
+ *
+ * Called when initializing driver
+ */
+static int iwl4965_hw_set_hw_params(struct iwl_priv *priv)
+{
+	if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
+	    priv->cfg->mod_params->num_of_queues <= IWL49_NUM_QUEUES)
+		priv->cfg->base_params->num_of_queues =
+			priv->cfg->mod_params->num_of_queues;
+
+	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
+	priv->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM;
+	priv->hw_params.scd_bc_tbls_size =
+			priv->cfg->base_params->num_of_queues *
+			sizeof(struct iwl4965_scd_bc_tbl);
+	priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
+	priv->hw_params.max_stations = IWL4965_STATION_COUNT;
+	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWL4965_BROADCAST_ID;
+	priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE;
+	priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE;
+	priv->hw_params.max_bsm_size = BSM_SRAM_SIZE;
+	priv->hw_params.ht40_channel = BIT(IEEE80211_BAND_5GHZ);
+
+	priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
+
+	priv->hw_params.tx_chains_num = iwl4965_num_of_ant(priv->cfg->valid_tx_ant);
+	priv->hw_params.rx_chains_num = iwl4965_num_of_ant(priv->cfg->valid_rx_ant);
+	priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
+	priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
+
+	iwl4965_set_ct_threshold(priv);
+
+	priv->hw_params.sens = &iwl4965_sensitivity;
+	priv->hw_params.beacon_time_tsf_bits = IWL4965_EXT_BEACON_TIME_POS;
+
+	return 0;
+}
+
+static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res)
+{
+	s32 sign = 1;
+
+	if (num < 0) {
+		sign = -sign;
+		num = -num;
+	}
+	if (denom < 0) {
+		sign = -sign;
+		denom = -denom;
+	}
+	*res = 1;
+	*res = ((num * 2 + denom) / (denom * 2)) * sign;
+
+	return 1;
+}
+
+/**
+ * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
+ *
+ * Determines power supply voltage compensation for txpower calculations.
+ * Returns number of 1/2-dB steps to subtract from gain table index,
+ * to compensate for difference between power supply voltage during
+ * factory measurements, vs. current power supply voltage.
+ *
+ * Voltage indication is higher for lower voltage.
+ * Lower voltage requires more gain (lower gain table index).
+ */
+static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage,
+					    s32 current_voltage)
+{
+	s32 comp = 0;
+
+	if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) ||
+	    (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage))
+		return 0;
+
+	iwl4965_math_div_round(current_voltage - eeprom_voltage,
+			       TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp);
+
+	if (current_voltage > eeprom_voltage)
+		comp *= 2;
+	if ((comp < -2) || (comp > 2))
+		comp = 0;
+
+	return comp;
+}
+
+static s32 iwl4965_get_tx_atten_grp(u16 channel)
+{
+	if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH &&
+	    channel <= CALIB_IWL_TX_ATTEN_GR5_LCH)
+		return CALIB_CH_GROUP_5;
+
+	if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH &&
+	    channel <= CALIB_IWL_TX_ATTEN_GR1_LCH)
+		return CALIB_CH_GROUP_1;
+
+	if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH &&
+	    channel <= CALIB_IWL_TX_ATTEN_GR2_LCH)
+		return CALIB_CH_GROUP_2;
+
+	if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH &&
+	    channel <= CALIB_IWL_TX_ATTEN_GR3_LCH)
+		return CALIB_CH_GROUP_3;
+
+	if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH &&
+	    channel <= CALIB_IWL_TX_ATTEN_GR4_LCH)
+		return CALIB_CH_GROUP_4;
+
+	return -1;
+}
+
+static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel)
+{
+	s32 b = -1;
+
+	for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
+		if (priv->calib_info->band_info[b].ch_from == 0)
+			continue;
+
+		if ((channel >= priv->calib_info->band_info[b].ch_from)
+		    && (channel <= priv->calib_info->band_info[b].ch_to))
+			break;
+	}
+
+	return b;
+}
+
+static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
+{
+	s32 val;
+
+	if (x2 == x1)
+		return y1;
+	else {
+		iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
+		return val + y2;
+	}
+}
+
+/**
+ * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
+ *
+ * Interpolates factory measurements from the two sample channels within a
+ * sub-band, to apply to channel of interest.  Interpolation is proportional to
+ * differences in channel frequencies, which is proportional to differences
+ * in channel number.
+ */
+static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel,
+				    struct iwl_eeprom_calib_ch_info *chan_info)
+{
+	s32 s = -1;
+	u32 c;
+	u32 m;
+	const struct iwl_eeprom_calib_measure *m1;
+	const struct iwl_eeprom_calib_measure *m2;
+	struct iwl_eeprom_calib_measure *omeas;
+	u32 ch_i1;
+	u32 ch_i2;
+
+	s = iwl4965_get_sub_band(priv, channel);
+	if (s >= EEPROM_TX_POWER_BANDS) {
+		IWL_ERR(priv, "Tx Power can not find channel %d\n", channel);
+		return -1;
+	}
+
+	ch_i1 = priv->calib_info->band_info[s].ch1.ch_num;
+	ch_i2 = priv->calib_info->band_info[s].ch2.ch_num;
+	chan_info->ch_num = (u8) channel;
+
+	IWL_DEBUG_TXPOWER(priv, "channel %d subband %d factory cal ch %d & %d\n",
+			  channel, s, ch_i1, ch_i2);
+
+	for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
+		for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
+			m1 = &(priv->calib_info->band_info[s].ch1.
+			       measurements[c][m]);
+			m2 = &(priv->calib_info->band_info[s].ch2.
+			       measurements[c][m]);
+			omeas = &(chan_info->measurements[c][m]);
+
+			omeas->actual_pow =
+			    (u8) iwl4965_interpolate_value(channel, ch_i1,
+							   m1->actual_pow,
+							   ch_i2,
+							   m2->actual_pow);
+			omeas->gain_idx =
+			    (u8) iwl4965_interpolate_value(channel, ch_i1,
+							   m1->gain_idx, ch_i2,
+							   m2->gain_idx);
+			omeas->temperature =
+			    (u8) iwl4965_interpolate_value(channel, ch_i1,
+							   m1->temperature,
+							   ch_i2,
+							   m2->temperature);
+			omeas->pa_det =
+			    (s8) iwl4965_interpolate_value(channel, ch_i1,
+							   m1->pa_det, ch_i2,
+							   m2->pa_det);
+
+			IWL_DEBUG_TXPOWER(priv,
+				"chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m,
+				m1->actual_pow, m2->actual_pow, omeas->actual_pow);
+			IWL_DEBUG_TXPOWER(priv,
+				"chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m,
+				m1->gain_idx, m2->gain_idx, omeas->gain_idx);
+			IWL_DEBUG_TXPOWER(priv,
+				"chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m,
+				m1->pa_det, m2->pa_det, omeas->pa_det);
+			IWL_DEBUG_TXPOWER(priv,
+				"chain %d meas %d  T1=%d  T2=%d  T=%d\n", c, m,
+				m1->temperature, m2->temperature,
+				omeas->temperature);
+		}
+	}
+
+	return 0;
+}
+
+/* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
+ * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
+static s32 back_off_table[] = {
+	10, 10, 10, 10, 10, 15, 17, 20,	/* OFDM SISO 20 MHz */
+	10, 10, 10, 10, 10, 15, 17, 20,	/* OFDM MIMO 20 MHz */
+	10, 10, 10, 10, 10, 15, 17, 20,	/* OFDM SISO 40 MHz */
+	10, 10, 10, 10, 10, 15, 17, 20,	/* OFDM MIMO 40 MHz */
+	10			/* CCK */
+};
+
+/* Thermal compensation values for txpower for various frequency ranges ...
+ *   ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
+static struct iwl4965_txpower_comp_entry {
+	s32 degrees_per_05db_a;
+	s32 degrees_per_05db_a_denom;
+} tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
+	{9, 2},			/* group 0 5.2, ch  34-43 */
+	{4, 1},			/* group 1 5.2, ch  44-70 */
+	{4, 1},			/* group 2 5.2, ch  71-124 */
+	{4, 1},			/* group 3 5.2, ch 125-200 */
+	{3, 1}			/* group 4 2.4, ch   all */
+};
+
+static s32 get_min_power_index(s32 rate_power_index, u32 band)
+{
+	if (!band) {
+		if ((rate_power_index & 7) <= 4)
+			return MIN_TX_GAIN_INDEX_52GHZ_EXT;
+	}
+	return MIN_TX_GAIN_INDEX;
+}
+
+struct gain_entry {
+	u8 dsp;
+	u8 radio;
+};
+
+static const struct gain_entry gain_table[2][108] = {
+	/* 5.2GHz power gain index table */
+	{
+	 {123, 0x3F},		/* highest txpower */
+	 {117, 0x3F},
+	 {110, 0x3F},
+	 {104, 0x3F},
+	 {98, 0x3F},
+	 {110, 0x3E},
+	 {104, 0x3E},
+	 {98, 0x3E},
+	 {110, 0x3D},
+	 {104, 0x3D},
+	 {98, 0x3D},
+	 {110, 0x3C},
+	 {104, 0x3C},
+	 {98, 0x3C},
+	 {110, 0x3B},
+	 {104, 0x3B},
+	 {98, 0x3B},
+	 {110, 0x3A},
+	 {104, 0x3A},
+	 {98, 0x3A},
+	 {110, 0x39},
+	 {104, 0x39},
+	 {98, 0x39},
+	 {110, 0x38},
+	 {104, 0x38},
+	 {98, 0x38},
+	 {110, 0x37},
+	 {104, 0x37},
+	 {98, 0x37},
+	 {110, 0x36},
+	 {104, 0x36},
+	 {98, 0x36},
+	 {110, 0x35},
+	 {104, 0x35},
+	 {98, 0x35},
+	 {110, 0x34},
+	 {104, 0x34},
+	 {98, 0x34},
+	 {110, 0x33},
+	 {104, 0x33},
+	 {98, 0x33},
+	 {110, 0x32},
+	 {104, 0x32},
+	 {98, 0x32},
+	 {110, 0x31},
+	 {104, 0x31},
+	 {98, 0x31},
+	 {110, 0x30},
+	 {104, 0x30},
+	 {98, 0x30},
+	 {110, 0x25},
+	 {104, 0x25},
+	 {98, 0x25},
+	 {110, 0x24},
+	 {104, 0x24},
+	 {98, 0x24},
+	 {110, 0x23},
+	 {104, 0x23},
+	 {98, 0x23},
+	 {110, 0x22},
+	 {104, 0x18},
+	 {98, 0x18},
+	 {110, 0x17},
+	 {104, 0x17},
+	 {98, 0x17},
+	 {110, 0x16},
+	 {104, 0x16},
+	 {98, 0x16},
+	 {110, 0x15},
+	 {104, 0x15},
+	 {98, 0x15},
+	 {110, 0x14},
+	 {104, 0x14},
+	 {98, 0x14},
+	 {110, 0x13},
+	 {104, 0x13},
+	 {98, 0x13},
+	 {110, 0x12},
+	 {104, 0x08},
+	 {98, 0x08},
+	 {110, 0x07},
+	 {104, 0x07},
+	 {98, 0x07},
+	 {110, 0x06},
+	 {104, 0x06},
+	 {98, 0x06},
+	 {110, 0x05},
+	 {104, 0x05},
+	 {98, 0x05},
+	 {110, 0x04},
+	 {104, 0x04},
+	 {98, 0x04},
+	 {110, 0x03},
+	 {104, 0x03},
+	 {98, 0x03},
+	 {110, 0x02},
+	 {104, 0x02},
+	 {98, 0x02},
+	 {110, 0x01},
+	 {104, 0x01},
+	 {98, 0x01},
+	 {110, 0x00},
+	 {104, 0x00},
+	 {98, 0x00},
+	 {93, 0x00},
+	 {88, 0x00},
+	 {83, 0x00},
+	 {78, 0x00},
+	 },
+	/* 2.4GHz power gain index table */
+	{
+	 {110, 0x3f},		/* highest txpower */
+	 {104, 0x3f},
+	 {98, 0x3f},
+	 {110, 0x3e},
+	 {104, 0x3e},
+	 {98, 0x3e},
+	 {110, 0x3d},
+	 {104, 0x3d},
+	 {98, 0x3d},
+	 {110, 0x3c},
+	 {104, 0x3c},
+	 {98, 0x3c},
+	 {110, 0x3b},
+	 {104, 0x3b},
+	 {98, 0x3b},
+	 {110, 0x3a},
+	 {104, 0x3a},
+	 {98, 0x3a},
+	 {110, 0x39},
+	 {104, 0x39},
+	 {98, 0x39},
+	 {110, 0x38},
+	 {104, 0x38},
+	 {98, 0x38},
+	 {110, 0x37},
+	 {104, 0x37},
+	 {98, 0x37},
+	 {110, 0x36},
+	 {104, 0x36},
+	 {98, 0x36},
+	 {110, 0x35},
+	 {104, 0x35},
+	 {98, 0x35},
+	 {110, 0x34},
+	 {104, 0x34},
+	 {98, 0x34},
+	 {110, 0x33},
+	 {104, 0x33},
+	 {98, 0x33},
+	 {110, 0x32},
+	 {104, 0x32},
+	 {98, 0x32},
+	 {110, 0x31},
+	 {104, 0x31},
+	 {98, 0x31},
+	 {110, 0x30},
+	 {104, 0x30},
+	 {98, 0x30},
+	 {110, 0x6},
+	 {104, 0x6},
+	 {98, 0x6},
+	 {110, 0x5},
+	 {104, 0x5},
+	 {98, 0x5},
+	 {110, 0x4},
+	 {104, 0x4},
+	 {98, 0x4},
+	 {110, 0x3},
+	 {104, 0x3},
+	 {98, 0x3},
+	 {110, 0x2},
+	 {104, 0x2},
+	 {98, 0x2},
+	 {110, 0x1},
+	 {104, 0x1},
+	 {98, 0x1},
+	 {110, 0x0},
+	 {104, 0x0},
+	 {98, 0x0},
+	 {97, 0},
+	 {96, 0},
+	 {95, 0},
+	 {94, 0},
+	 {93, 0},
+	 {92, 0},
+	 {91, 0},
+	 {90, 0},
+	 {89, 0},
+	 {88, 0},
+	 {87, 0},
+	 {86, 0},
+	 {85, 0},
+	 {84, 0},
+	 {83, 0},
+	 {82, 0},
+	 {81, 0},
+	 {80, 0},
+	 {79, 0},
+	 {78, 0},
+	 {77, 0},
+	 {76, 0},
+	 {75, 0},
+	 {74, 0},
+	 {73, 0},
+	 {72, 0},
+	 {71, 0},
+	 {70, 0},
+	 {69, 0},
+	 {68, 0},
+	 {67, 0},
+	 {66, 0},
+	 {65, 0},
+	 {64, 0},
+	 {63, 0},
+	 {62, 0},
+	 {61, 0},
+	 {60, 0},
+	 {59, 0},
+	 }
+};
+
+static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
+				    u8 is_ht40, u8 ctrl_chan_high,
+				    struct iwl4965_tx_power_db *tx_power_tbl)
+{
+	u8 saturation_power;
+	s32 target_power;
+	s32 user_target_power;
+	s32 power_limit;
+	s32 current_temp;
+	s32 reg_limit;
+	s32 current_regulatory;
+	s32 txatten_grp = CALIB_CH_GROUP_MAX;
+	int i;
+	int c;
+	const struct iwl_channel_info *ch_info = NULL;
+	struct iwl_eeprom_calib_ch_info ch_eeprom_info;
+	const struct iwl_eeprom_calib_measure *measurement;
+	s16 voltage;
+	s32 init_voltage;
+	s32 voltage_compensation;
+	s32 degrees_per_05db_num;
+	s32 degrees_per_05db_denom;
+	s32 factory_temp;
+	s32 temperature_comp[2];
+	s32 factory_gain_index[2];
+	s32 factory_actual_pwr[2];
+	s32 power_index;
+
+	/* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
+	 *   are used for indexing into txpower table) */
+	user_target_power = 2 * priv->tx_power_user_lmt;
+
+	/* Get current (RXON) channel, band, width */
+	IWL_DEBUG_TXPOWER(priv, "chan %d band %d is_ht40 %d\n", channel, band,
+			  is_ht40);
+
+	ch_info = iwl_legacy_get_channel_info(priv, priv->band, channel);
+
+	if (!iwl_legacy_is_channel_valid(ch_info))
+		return -EINVAL;
+
+	/* get txatten group, used to select 1) thermal txpower adjustment
+	 *   and 2) mimo txpower balance between Tx chains. */
+	txatten_grp = iwl4965_get_tx_atten_grp(channel);
+	if (txatten_grp < 0) {
+		IWL_ERR(priv, "Can't find txatten group for channel %d.\n",
+			  channel);
+		return -EINVAL;
+	}
+
+	IWL_DEBUG_TXPOWER(priv, "channel %d belongs to txatten group %d\n",
+			  channel, txatten_grp);
+
+	if (is_ht40) {
+		if (ctrl_chan_high)
+			channel -= 2;
+		else
+			channel += 2;
+	}
+
+	/* hardware txpower limits ...
+	 * saturation (clipping distortion) txpowers are in half-dBm */
+	if (band)
+		saturation_power = priv->calib_info->saturation_power24;
+	else
+		saturation_power = priv->calib_info->saturation_power52;
+
+	if (saturation_power < IWL_TX_POWER_SATURATION_MIN ||
+	    saturation_power > IWL_TX_POWER_SATURATION_MAX) {
+		if (band)
+			saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24;
+		else
+			saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52;
+	}
+
+	/* regulatory txpower limits ... reg_limit values are in half-dBm,
+	 *   max_power_avg values are in dBm, convert * 2 */
+	if (is_ht40)
+		reg_limit = ch_info->ht40_max_power_avg * 2;
+	else
+		reg_limit = ch_info->max_power_avg * 2;
+
+	if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) ||
+	    (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) {
+		if (band)
+			reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24;
+		else
+			reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52;
+	}
+
+	/* Interpolate txpower calibration values for this channel,
+	 *   based on factory calibration tests on spaced channels. */
+	iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info);
+
+	/* calculate tx gain adjustment based on power supply voltage */
+	voltage = le16_to_cpu(priv->calib_info->voltage);
+	init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage);
+	voltage_compensation =
+	    iwl4965_get_voltage_compensation(voltage, init_voltage);
+
+	IWL_DEBUG_TXPOWER(priv, "curr volt %d eeprom volt %d volt comp %d\n",
+			  init_voltage,
+			  voltage, voltage_compensation);
+
+	/* get current temperature (Celsius) */
+	current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN);
+	current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX);
+	current_temp = KELVIN_TO_CELSIUS(current_temp);
+
+	/* select thermal txpower adjustment params, based on channel group
+	 *   (same frequency group used for mimo txatten adjustment) */
+	degrees_per_05db_num =
+	    tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
+	degrees_per_05db_denom =
+	    tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
+
+	/* get per-chain txpower values from factory measurements */
+	for (c = 0; c < 2; c++) {
+		measurement = &ch_eeprom_info.measurements[c][1];
+
+		/* txgain adjustment (in half-dB steps) based on difference
+		 *   between factory and current temperature */
+		factory_temp = measurement->temperature;
+		iwl4965_math_div_round((current_temp - factory_temp) *
+				       degrees_per_05db_denom,
+				       degrees_per_05db_num,
+				       &temperature_comp[c]);
+
+		factory_gain_index[c] = measurement->gain_idx;
+		factory_actual_pwr[c] = measurement->actual_pow;
+
+		IWL_DEBUG_TXPOWER(priv, "chain = %d\n", c);
+		IWL_DEBUG_TXPOWER(priv, "fctry tmp %d, "
+				  "curr tmp %d, comp %d steps\n",
+				  factory_temp, current_temp,
+				  temperature_comp[c]);
+
+		IWL_DEBUG_TXPOWER(priv, "fctry idx %d, fctry pwr %d\n",
+				  factory_gain_index[c],
+				  factory_actual_pwr[c]);
+	}
+
+	/* for each of 33 bit-rates (including 1 for CCK) */
+	for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) {
+		u8 is_mimo_rate;
+		union iwl4965_tx_power_dual_stream tx_power;
+
+		/* for mimo, reduce each chain's txpower by half
+		 * (3dB, 6 steps), so total output power is regulatory
+		 * compliant. */
+		if (i & 0x8) {
+			current_regulatory = reg_limit -
+			    IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
+			is_mimo_rate = 1;
+		} else {
+			current_regulatory = reg_limit;
+			is_mimo_rate = 0;
+		}
+
+		/* find txpower limit, either hardware or regulatory */
+		power_limit = saturation_power - back_off_table[i];
+		if (power_limit > current_regulatory)
+			power_limit = current_regulatory;
+
+		/* reduce user's txpower request if necessary
+		 * for this rate on this channel */
+		target_power = user_target_power;
+		if (target_power > power_limit)
+			target_power = power_limit;
+
+		IWL_DEBUG_TXPOWER(priv, "rate %d sat %d reg %d usr %d tgt %d\n",
+				  i, saturation_power - back_off_table[i],
+				  current_regulatory, user_target_power,
+				  target_power);
+
+		/* for each of 2 Tx chains (radio transmitters) */
+		for (c = 0; c < 2; c++) {
+			s32 atten_value;
+
+			if (is_mimo_rate)
+				atten_value =
+				    (s32)le32_to_cpu(priv->card_alive_init.
+				    tx_atten[txatten_grp][c]);
+			else
+				atten_value = 0;
+
+			/* calculate index; higher index means lower txpower */
+			power_index = (u8) (factory_gain_index[c] -
+					    (target_power -
+					     factory_actual_pwr[c]) -
+					    temperature_comp[c] -
+					    voltage_compensation +
+					    atten_value);
+
+/*			IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n",
+						power_index); */
+
+			if (power_index < get_min_power_index(i, band))
+				power_index = get_min_power_index(i, band);
+
+			/* adjust 5 GHz index to support negative indexes */
+			if (!band)
+				power_index += 9;
+
+			/* CCK, rate 32, reduce txpower for CCK */
+			if (i == POWER_TABLE_CCK_ENTRY)
+				power_index +=
+				    IWL_TX_POWER_CCK_COMPENSATION_C_STEP;
+
+			/* stay within the table! */
+			if (power_index > 107) {
+				IWL_WARN(priv, "txpower index %d > 107\n",
+					    power_index);
+				power_index = 107;
+			}
+			if (power_index < 0) {
+				IWL_WARN(priv, "txpower index %d < 0\n",
+					    power_index);
+				power_index = 0;
+			}
+
+			/* fill txpower command for this rate/chain */
+			tx_power.s.radio_tx_gain[c] =
+				gain_table[band][power_index].radio;
+			tx_power.s.dsp_predis_atten[c] =
+				gain_table[band][power_index].dsp;
+
+			IWL_DEBUG_TXPOWER(priv, "chain %d mimo %d index %d "
+					  "gain 0x%02x dsp %d\n",
+					  c, atten_value, power_index,
+					tx_power.s.radio_tx_gain[c],
+					tx_power.s.dsp_predis_atten[c]);
+		} /* for each chain */
+
+		tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
+
+	} /* for each rate */
+
+	return 0;
+}
+
+/**
+ * iwl4965_send_tx_power - Configure the TXPOWER level user limit
+ *
+ * Uses the active RXON for channel, band, and characteristics (ht40, high)
+ * The power limit is taken from priv->tx_power_user_lmt.
+ */
+static int iwl4965_send_tx_power(struct iwl_priv *priv)
+{
+	struct iwl4965_txpowertable_cmd cmd = { 0 };
+	int ret;
+	u8 band = 0;
+	bool is_ht40 = false;
+	u8 ctrl_chan_high = 0;
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+
+	if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
+		      "TX Power requested while scanning!\n"))
+		return -EAGAIN;
+
+	band = priv->band == IEEE80211_BAND_2GHZ;
+
+	is_ht40 = iw4965_is_ht40_channel(ctx->active.flags);
+
+	if (is_ht40 && (ctx->active.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
+		ctrl_chan_high = 1;
+
+	cmd.band = band;
+	cmd.channel = ctx->active.channel;
+
+	ret = iwl4965_fill_txpower_tbl(priv, band,
+				le16_to_cpu(ctx->active.channel),
+				is_ht40, ctrl_chan_high, &cmd.tx_power);
+	if (ret)
+		goto out;
+
+	ret = iwl_legacy_send_cmd_pdu(priv,
+			 REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
+
+out:
+	return ret;
+}
+
+static int iwl4965_send_rxon_assoc(struct iwl_priv *priv,
+				   struct iwl_rxon_context *ctx)
+{
+	int ret = 0;
+	struct iwl4965_rxon_assoc_cmd rxon_assoc;
+	const struct iwl_legacy_rxon_cmd *rxon1 = &ctx->staging;
+	const struct iwl_legacy_rxon_cmd *rxon2 = &ctx->active;
+
+	if ((rxon1->flags == rxon2->flags) &&
+	    (rxon1->filter_flags == rxon2->filter_flags) &&
+	    (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
+	    (rxon1->ofdm_ht_single_stream_basic_rates ==
+	     rxon2->ofdm_ht_single_stream_basic_rates) &&
+	    (rxon1->ofdm_ht_dual_stream_basic_rates ==
+	     rxon2->ofdm_ht_dual_stream_basic_rates) &&
+	    (rxon1->rx_chain == rxon2->rx_chain) &&
+	    (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
+		IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
+		return 0;
+	}
+
+	rxon_assoc.flags = ctx->staging.flags;
+	rxon_assoc.filter_flags = ctx->staging.filter_flags;
+	rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
+	rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
+	rxon_assoc.reserved = 0;
+	rxon_assoc.ofdm_ht_single_stream_basic_rates =
+	    ctx->staging.ofdm_ht_single_stream_basic_rates;
+	rxon_assoc.ofdm_ht_dual_stream_basic_rates =
+	    ctx->staging.ofdm_ht_dual_stream_basic_rates;
+	rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain;
+
+	ret = iwl_legacy_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
+				     sizeof(rxon_assoc), &rxon_assoc, NULL);
+	if (ret)
+		return ret;
+
+	return ret;
+}
+
+static int iwl4965_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
+{
+	/* cast away the const for active_rxon in this function */
+	struct iwl_legacy_rxon_cmd *active_rxon = (void *)&ctx->active;
+	int ret;
+	bool new_assoc =
+		!!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
+
+	if (!iwl_legacy_is_alive(priv))
+		return -EBUSY;
+
+	if (!ctx->is_active)
+		return 0;
+
+	/* always get timestamp with Rx frame */
+	ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
+
+	ret = iwl_legacy_check_rxon_cmd(priv, ctx);
+	if (ret) {
+		IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * receive commit_rxon request
+	 * abort any previous channel switch if still in process
+	 */
+	if (priv->switch_rxon.switch_in_progress &&
+	    (priv->switch_rxon.channel != ctx->staging.channel)) {
+		IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
+		      le16_to_cpu(priv->switch_rxon.channel));
+		iwl_legacy_chswitch_done(priv, false);
+	}
+
+	/* If we don't need to send a full RXON, we can use
+	 * iwl_rxon_assoc_cmd which is used to reconfigure filter
+	 * and other flags for the current radio configuration. */
+	if (!iwl_legacy_full_rxon_required(priv, ctx)) {
+		ret = iwl_legacy_send_rxon_assoc(priv, ctx);
+		if (ret) {
+			IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
+			return ret;
+		}
+
+		memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
+		iwl_legacy_print_rx_config_cmd(priv, ctx);
+		return 0;
+	}
+
+	/* If we are currently associated and the new config requires
+	 * an RXON_ASSOC and the new config wants the associated mask enabled,
+	 * we must clear the associated from the active configuration
+	 * before we apply the new config */
+	if (iwl_legacy_is_associated_ctx(ctx) && new_assoc) {
+		IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
+		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+
+		ret = iwl_legacy_send_cmd_pdu(priv, ctx->rxon_cmd,
+				       sizeof(struct iwl_legacy_rxon_cmd),
+				       active_rxon);
+
+		/* If the mask clearing failed then we set
+		 * active_rxon back to what it was previously */
+		if (ret) {
+			active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
+			IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
+			return ret;
+		}
+		iwl_legacy_clear_ucode_stations(priv, ctx);
+		iwl_legacy_restore_stations(priv, ctx);
+		ret = iwl4965_restore_default_wep_keys(priv, ctx);
+		if (ret) {
+			IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
+			return ret;
+		}
+	}
+
+	IWL_DEBUG_INFO(priv, "Sending RXON\n"
+		       "* with%s RXON_FILTER_ASSOC_MSK\n"
+		       "* channel = %d\n"
+		       "* bssid = %pM\n",
+		       (new_assoc ? "" : "out"),
+		       le16_to_cpu(ctx->staging.channel),
+		       ctx->staging.bssid_addr);
+
+	iwl_legacy_set_rxon_hwcrypto(priv, ctx,
+				!priv->cfg->mod_params->sw_crypto);
+
+	/* Apply the new configuration
+	 * RXON unassoc clears the station table in uCode so restoration of
+	 * stations is needed after it (the RXON command) completes
+	 */
+	if (!new_assoc) {
+		ret = iwl_legacy_send_cmd_pdu(priv, ctx->rxon_cmd,
+			      sizeof(struct iwl_legacy_rxon_cmd), &ctx->staging);
+		if (ret) {
+			IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
+			return ret;
+		}
+		IWL_DEBUG_INFO(priv, "Return from !new_assoc RXON.\n");
+		memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
+		iwl_legacy_clear_ucode_stations(priv, ctx);
+		iwl_legacy_restore_stations(priv, ctx);
+		ret = iwl4965_restore_default_wep_keys(priv, ctx);
+		if (ret) {
+			IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
+			return ret;
+		}
+	}
+	if (new_assoc) {
+		priv->start_calib = 0;
+		/* Apply the new configuration
+		 * RXON assoc doesn't clear the station table in uCode,
+		 */
+		ret = iwl_legacy_send_cmd_pdu(priv, ctx->rxon_cmd,
+			      sizeof(struct iwl_legacy_rxon_cmd), &ctx->staging);
+		if (ret) {
+			IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
+			return ret;
+		}
+		memcpy(active_rxon, &ctx->staging, sizeof(*active_rxon));
+	}
+	iwl_legacy_print_rx_config_cmd(priv, ctx);
+
+	iwl4965_init_sensitivity(priv);
+
+	/* If we issue a new RXON command which required a tune then we must
+	 * send a new TXPOWER command or we won't be able to Tx any frames */
+	ret = iwl_legacy_set_tx_power(priv, priv->tx_power_user_lmt, true);
+	if (ret) {
+		IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int iwl4965_hw_channel_switch(struct iwl_priv *priv,
+				     struct ieee80211_channel_switch *ch_switch)
+{
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+	int rc;
+	u8 band = 0;
+	bool is_ht40 = false;
+	u8 ctrl_chan_high = 0;
+	struct iwl4965_channel_switch_cmd cmd;
+	const struct iwl_channel_info *ch_info;
+	u32 switch_time_in_usec, ucode_switch_time;
+	u16 ch;
+	u32 tsf_low;
+	u8 switch_count;
+	u16 beacon_interval = le16_to_cpu(ctx->timing.beacon_interval);
+	struct ieee80211_vif *vif = ctx->vif;
+	band = priv->band == IEEE80211_BAND_2GHZ;
+
+	is_ht40 = iw4965_is_ht40_channel(ctx->staging.flags);
+
+	if (is_ht40 &&
+	    (ctx->staging.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
+		ctrl_chan_high = 1;
+
+	cmd.band = band;
+	cmd.expect_beacon = 0;
+	ch = ch_switch->channel->hw_value;
+	cmd.channel = cpu_to_le16(ch);
+	cmd.rxon_flags = ctx->staging.flags;
+	cmd.rxon_filter_flags = ctx->staging.filter_flags;
+	switch_count = ch_switch->count;
+	tsf_low = ch_switch->timestamp & 0x0ffffffff;
+	/*
+	 * calculate the ucode channel switch time
+	 * adding TSF as one of the factor for when to switch
+	 */
+	if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) {
+		if (switch_count > ((priv->ucode_beacon_time - tsf_low) /
+		    beacon_interval)) {
+			switch_count -= (priv->ucode_beacon_time -
+				tsf_low) / beacon_interval;
+		} else
+			switch_count = 0;
+	}
+	if (switch_count <= 1)
+		cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
+	else {
+		switch_time_in_usec =
+			vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
+		ucode_switch_time = iwl_legacy_usecs_to_beacons(priv,
+							 switch_time_in_usec,
+							 beacon_interval);
+		cmd.switch_time = iwl_legacy_add_beacon_time(priv,
+						      priv->ucode_beacon_time,
+						      ucode_switch_time,
+						      beacon_interval);
+	}
+	IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n",
+		      cmd.switch_time);
+	ch_info = iwl_legacy_get_channel_info(priv, priv->band, ch);
+	if (ch_info)
+		cmd.expect_beacon = iwl_legacy_is_channel_radar(ch_info);
+	else {
+		IWL_ERR(priv, "invalid channel switch from %u to %u\n",
+			ctx->active.channel, ch);
+		return -EFAULT;
+	}
+
+	rc = iwl4965_fill_txpower_tbl(priv, band, ch, is_ht40,
+				      ctrl_chan_high, &cmd.tx_power);
+	if (rc) {
+		IWL_DEBUG_11H(priv, "error:%d  fill txpower_tbl\n", rc);
+		return rc;
+	}
+
+	priv->switch_rxon.channel = cmd.channel;
+	priv->switch_rxon.switch_in_progress = true;
+
+	return iwl_legacy_send_cmd_pdu(priv,
+			 REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
+}
+
+/**
+ * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
+ */
+static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
+					    struct iwl_tx_queue *txq,
+					    u16 byte_cnt)
+{
+	struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
+	int txq_id = txq->q.id;
+	int write_ptr = txq->q.write_ptr;
+	int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
+	__le16 bc_ent;
+
+	WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
+
+	bc_ent = cpu_to_le16(len & 0xFFF);
+	/* Set up byte count within first 256 entries */
+	scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
+
+	/* If within first 64 entries, duplicate at end */
+	if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
+		scd_bc_tbl[txq_id].
+			tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent;
+}
+
+/**
+ * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
+ * @statistics: Provides the temperature reading from the uCode
+ *
+ * A return of <0 indicates bogus data in the statistics
+ */
+static int iwl4965_hw_get_temperature(struct iwl_priv *priv)
+{
+	s32 temperature;
+	s32 vt;
+	s32 R1, R2, R3;
+	u32 R4;
+
+	if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
+	    (priv->_4965.statistics.flag &
+			STATISTICS_REPLY_FLG_HT40_MODE_MSK)) {
+		IWL_DEBUG_TEMP(priv, "Running HT40 temperature calibration\n");
+		R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
+		R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
+		R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
+		R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]);
+	} else {
+		IWL_DEBUG_TEMP(priv, "Running temperature calibration\n");
+		R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
+		R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
+		R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
+		R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]);
+	}
+
+	/*
+	 * Temperature is only 23 bits, so sign extend out to 32.
+	 *
+	 * NOTE If we haven't received a statistics notification yet
+	 * with an updated temperature, use R4 provided to us in the
+	 * "initialize" ALIVE response.
+	 */
+	if (!test_bit(STATUS_TEMPERATURE, &priv->status))
+		vt = sign_extend32(R4, 23);
+	else
+		vt = sign_extend32(le32_to_cpu(priv->_4965.statistics.
+				 general.common.temperature), 23);
+
+	IWL_DEBUG_TEMP(priv, "Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt);
+
+	if (R3 == R1) {
+		IWL_ERR(priv, "Calibration conflict R1 == R3\n");
+		return -1;
+	}
+
+	/* Calculate temperature in degrees Kelvin, adjust by 97%.
+	 * Add offset to center the adjustment around 0 degrees Centigrade. */
+	temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
+	temperature /= (R3 - R1);
+	temperature = (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
+
+	IWL_DEBUG_TEMP(priv, "Calibrated temperature: %dK, %dC\n",
+			temperature, KELVIN_TO_CELSIUS(temperature));
+
+	return temperature;
+}
+
+/* Adjust Txpower only if temperature variance is greater than threshold. */
+#define IWL_TEMPERATURE_THRESHOLD   3
+
+/**
+ * iwl4965_is_temp_calib_needed - determines if new calibration is needed
+ *
+ * If the temperature changed has changed sufficiently, then a recalibration
+ * is needed.
+ *
+ * Assumes caller will replace priv->last_temperature once calibration
+ * executed.
+ */
+static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv)
+{
+	int temp_diff;
+
+	if (!test_bit(STATUS_STATISTICS, &priv->status)) {
+		IWL_DEBUG_TEMP(priv, "Temperature not updated -- no statistics.\n");
+		return 0;
+	}
+
+	temp_diff = priv->temperature - priv->last_temperature;
+
+	/* get absolute value */
+	if (temp_diff < 0) {
+		IWL_DEBUG_POWER(priv, "Getting cooler, delta %d\n", temp_diff);
+		temp_diff = -temp_diff;
+	} else if (temp_diff == 0)
+		IWL_DEBUG_POWER(priv, "Temperature unchanged\n");
+	else
+		IWL_DEBUG_POWER(priv, "Getting warmer, delta %d\n", temp_diff);
+
+	if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
+		IWL_DEBUG_POWER(priv, " => thermal txpower calib not needed\n");
+		return 0;
+	}
+
+	IWL_DEBUG_POWER(priv, " => thermal txpower calib needed\n");
+
+	return 1;
+}
+
+static void iwl4965_temperature_calib(struct iwl_priv *priv)
+{
+	s32 temp;
+
+	temp = iwl4965_hw_get_temperature(priv);
+	if (temp < 0)
+		return;
+
+	if (priv->temperature != temp) {
+		if (priv->temperature)
+			IWL_DEBUG_TEMP(priv, "Temperature changed "
+				       "from %dC to %dC\n",
+				       KELVIN_TO_CELSIUS(priv->temperature),
+				       KELVIN_TO_CELSIUS(temp));
+		else
+			IWL_DEBUG_TEMP(priv, "Temperature "
+				       "initialized to %dC\n",
+				       KELVIN_TO_CELSIUS(temp));
+	}
+
+	priv->temperature = temp;
+	set_bit(STATUS_TEMPERATURE, &priv->status);
+
+	if (!priv->disable_tx_power_cal &&
+	     unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
+	     iwl4965_is_temp_calib_needed(priv))
+		queue_work(priv->workqueue, &priv->txpower_work);
+}
+
+static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len)
+{
+	switch (cmd_id) {
+	case REPLY_RXON:
+		return (u16) sizeof(struct iwl4965_rxon_cmd);
+	default:
+		return len;
+	}
+}
+
+static u16 iwl4965_build_addsta_hcmd(const struct iwl_legacy_addsta_cmd *cmd,
+								u8 *data)
+{
+	struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data;
+	addsta->mode = cmd->mode;
+	memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
+	memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
+	addsta->station_flags = cmd->station_flags;
+	addsta->station_flags_msk = cmd->station_flags_msk;
+	addsta->tid_disable_tx = cmd->tid_disable_tx;
+	addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
+	addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
+	addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
+	addsta->sleep_tx_count = cmd->sleep_tx_count;
+	addsta->reserved1 = cpu_to_le16(0);
+	addsta->reserved2 = cpu_to_le16(0);
+
+	return (u16)sizeof(struct iwl4965_addsta_cmd);
+}
+
+static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
+{
+	return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN;
+}
+
+/**
+ * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue
+ */
+static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
+				      struct iwl_ht_agg *agg,
+				      struct iwl4965_tx_resp *tx_resp,
+				      int txq_id, u16 start_idx)
+{
+	u16 status;
+	struct agg_tx_status *frame_status = tx_resp->u.agg_status;
+	struct ieee80211_tx_info *info = NULL;
+	struct ieee80211_hdr *hdr = NULL;
+	u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
+	int i, sh, idx;
+	u16 seq;
+	if (agg->wait_for_ba)
+		IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n");
+
+	agg->frame_count = tx_resp->frame_count;
+	agg->start_idx = start_idx;
+	agg->rate_n_flags = rate_n_flags;
+	agg->bitmap = 0;
+
+	/* num frames attempted by Tx command */
+	if (agg->frame_count == 1) {
+		/* Only one frame was attempted; no block-ack will arrive */
+		status = le16_to_cpu(frame_status[0].status);
+		idx = start_idx;
+
+		IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n",
+				   agg->frame_count, agg->start_idx, idx);
+
+		info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb);
+		info->status.rates[0].count = tx_resp->failure_frame + 1;
+		info->flags &= ~IEEE80211_TX_CTL_AMPDU;
+		info->flags |= iwl4965_tx_status_to_mac80211(status);
+		iwl4965_hwrate_to_tx_control(priv, rate_n_flags, info);
+
+		IWL_DEBUG_TX_REPLY(priv, "1 Frame 0x%x failure :%d\n",
+				    status & 0xff, tx_resp->failure_frame);
+		IWL_DEBUG_TX_REPLY(priv, "Rate Info rate_n_flags=%x\n", rate_n_flags);
+
+		agg->wait_for_ba = 0;
+	} else {
+		/* Two or more frames were attempted; expect block-ack */
+		u64 bitmap = 0;
+		int start = agg->start_idx;
+
+		/* Construct bit-map of pending frames within Tx window */
+		for (i = 0; i < agg->frame_count; i++) {
+			u16 sc;
+			status = le16_to_cpu(frame_status[i].status);
+			seq  = le16_to_cpu(frame_status[i].sequence);
+			idx = SEQ_TO_INDEX(seq);
+			txq_id = SEQ_TO_QUEUE(seq);
+
+			if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
+				      AGG_TX_STATE_ABORT_MSK))
+				continue;
+
+			IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n",
+					   agg->frame_count, txq_id, idx);
+
+			hdr = iwl_legacy_tx_queue_get_hdr(priv, txq_id, idx);
+			if (!hdr) {
+				IWL_ERR(priv,
+					"BUG_ON idx doesn't point to valid skb"
+					" idx=%d, txq_id=%d\n", idx, txq_id);
+				return -1;
+			}
+
+			sc = le16_to_cpu(hdr->seq_ctrl);
+			if (idx != (SEQ_TO_SN(sc) & 0xff)) {
+				IWL_ERR(priv,
+					"BUG_ON idx doesn't match seq control"
+					" idx=%d, seq_idx=%d, seq=%d\n",
+					idx, SEQ_TO_SN(sc), hdr->seq_ctrl);
+				return -1;
+			}
+
+			IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n",
+					   i, idx, SEQ_TO_SN(sc));
+
+			sh = idx - start;
+			if (sh > 64) {
+				sh = (start - idx) + 0xff;
+				bitmap = bitmap << sh;
+				sh = 0;
+				start = idx;
+			} else if (sh < -64)
+				sh  = 0xff - (start - idx);
+			else if (sh < 0) {
+				sh = start - idx;
+				start = idx;
+				bitmap = bitmap << sh;
+				sh = 0;
+			}
+			bitmap |= 1ULL << sh;
+			IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n",
+					   start, (unsigned long long)bitmap);
+		}
+
+		agg->bitmap = bitmap;
+		agg->start_idx = start;
+		IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n",
+				   agg->frame_count, agg->start_idx,
+				   (unsigned long long)agg->bitmap);
+
+		if (bitmap)
+			agg->wait_for_ba = 1;
+	}
+	return 0;
+}
+
+static u8 iwl4965_find_station(struct iwl_priv *priv, const u8 *addr)
+{
+	int i;
+	int start = 0;
+	int ret = IWL_INVALID_STATION;
+	unsigned long flags;
+
+	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC))
+		start = IWL_STA_ID;
+
+	if (is_broadcast_ether_addr(addr))
+		return priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	for (i = start; i < priv->hw_params.max_stations; i++)
+		if (priv->stations[i].used &&
+		    (!compare_ether_addr(priv->stations[i].sta.sta.addr,
+					 addr))) {
+			ret = i;
+			goto out;
+		}
+
+	IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n",
+			      addr, priv->num_stations);
+
+ out:
+	/*
+	 * It may be possible that more commands interacting with stations
+	 * arrive before we completed processing the adding of
+	 * station
+	 */
+	if (ret != IWL_INVALID_STATION &&
+	    (!(priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) ||
+	     ((priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) &&
+	      (priv->stations[ret].used & IWL_STA_UCODE_INPROGRESS)))) {
+		IWL_ERR(priv, "Requested station info for sta %d before ready.\n",
+			ret);
+		ret = IWL_INVALID_STATION;
+	}
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+	return ret;
+}
+
+static int iwl4965_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
+{
+	if (priv->iw_mode == NL80211_IFTYPE_STATION) {
+		return IWL_AP_ID;
+	} else {
+		u8 *da = ieee80211_get_DA(hdr);
+		return iwl4965_find_station(priv, da);
+	}
+}
+
+/**
+ * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
+ */
+static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
+				struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	u16 sequence = le16_to_cpu(pkt->hdr.sequence);
+	int txq_id = SEQ_TO_QUEUE(sequence);
+	int index = SEQ_TO_INDEX(sequence);
+	struct iwl_tx_queue *txq = &priv->txq[txq_id];
+	struct ieee80211_hdr *hdr;
+	struct ieee80211_tx_info *info;
+	struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
+	u32  status = le32_to_cpu(tx_resp->u.status);
+	int uninitialized_var(tid);
+	int sta_id;
+	int freed;
+	u8 *qc = NULL;
+	unsigned long flags;
+
+	if ((index >= txq->q.n_bd) || (iwl_legacy_queue_used(&txq->q, index) == 0)) {
+		IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
+			  "is out of range [0-%d] %d %d\n", txq_id,
+			  index, txq->q.n_bd, txq->q.write_ptr,
+			  txq->q.read_ptr);
+		return;
+	}
+
+	txq->time_stamp = jiffies;
+	info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb);
+	memset(&info->status, 0, sizeof(info->status));
+
+	hdr = iwl_legacy_tx_queue_get_hdr(priv, txq_id, index);
+	if (ieee80211_is_data_qos(hdr->frame_control)) {
+		qc = ieee80211_get_qos_ctl(hdr);
+		tid = qc[0] & 0xf;
+	}
+
+	sta_id = iwl4965_get_ra_sta_id(priv, hdr);
+	if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
+		IWL_ERR(priv, "Station not known\n");
+		return;
+	}
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	if (txq->sched_retry) {
+		const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
+		struct iwl_ht_agg *agg = NULL;
+		WARN_ON(!qc);
+
+		agg = &priv->stations[sta_id].tid[tid].agg;
+
+		iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);
+
+		/* check if BAR is needed */
+		if ((tx_resp->frame_count == 1) && !iwl4965_is_tx_success(status))
+			info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
+
+		if (txq->q.read_ptr != (scd_ssn & 0xff)) {
+			index = iwl_legacy_queue_dec_wrap(scd_ssn & 0xff,
+								txq->q.n_bd);
+			IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn "
+					   "%d index %d\n", scd_ssn , index);
+			freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
+			if (qc)
+				iwl4965_free_tfds_in_queue(priv, sta_id,
+						       tid, freed);
+
+			if (priv->mac80211_registered &&
+			    (iwl_legacy_queue_space(&txq->q) > txq->q.low_mark)
+				 && (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA))
+				iwl_legacy_wake_queue(priv, txq);
+		}
+	} else {
+		info->status.rates[0].count = tx_resp->failure_frame + 1;
+		info->flags |= iwl4965_tx_status_to_mac80211(status);
+		iwl4965_hwrate_to_tx_control(priv,
+					le32_to_cpu(tx_resp->rate_n_flags),
+					info);
+
+		IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) "
+				   "rate_n_flags 0x%x retries %d\n",
+				   txq_id,
+				   iwl4965_get_tx_fail_reason(status), status,
+				   le32_to_cpu(tx_resp->rate_n_flags),
+				   tx_resp->failure_frame);
+
+		freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
+		if (qc && likely(sta_id != IWL_INVALID_STATION))
+			iwl4965_free_tfds_in_queue(priv, sta_id, tid, freed);
+		else if (sta_id == IWL_INVALID_STATION)
+			IWL_DEBUG_TX_REPLY(priv, "Station not known\n");
+
+		if (priv->mac80211_registered &&
+		    (iwl_legacy_queue_space(&txq->q) > txq->q.low_mark))
+			iwl_legacy_wake_queue(priv, txq);
+	}
+	if (qc && likely(sta_id != IWL_INVALID_STATION))
+		iwl4965_txq_check_empty(priv, sta_id, tid, txq_id);
+
+	iwl4965_check_abort_status(priv, tx_resp->frame_count, status);
+
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+}
+
+static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
+				    struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl4965_beacon_notif *beacon = (void *)pkt->u.raw;
+	u8 rate __maybe_unused =
+		iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
+
+	IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d "
+		"tsf:0x%.8x%.8x rate:%d\n",
+		le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
+		beacon->beacon_notify_hdr.failure_frame,
+		le32_to_cpu(beacon->ibss_mgr_status),
+		le32_to_cpu(beacon->high_tsf),
+		le32_to_cpu(beacon->low_tsf), rate);
+
+	priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
+}
+
+/* Set up 4965-specific Rx frame reply handlers */
+static void iwl4965_rx_handler_setup(struct iwl_priv *priv)
+{
+	/* Legacy Rx frames */
+	priv->rx_handlers[REPLY_RX] = iwl4965_rx_reply_rx;
+	/* Tx response */
+	priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
+	priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
+}
+
+static struct iwl_hcmd_ops iwl4965_hcmd = {
+	.rxon_assoc = iwl4965_send_rxon_assoc,
+	.commit_rxon = iwl4965_commit_rxon,
+	.set_rxon_chain = iwl4965_set_rxon_chain,
+};
+
+static void iwl4965_post_scan(struct iwl_priv *priv)
+{
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+
+	/*
+	 * Since setting the RXON may have been deferred while
+	 * performing the scan, fire one off if needed
+	 */
+	if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
+		iwl_legacy_commit_rxon(priv, ctx);
+}
+
+static void iwl4965_post_associate(struct iwl_priv *priv)
+{
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+	struct ieee80211_vif *vif = ctx->vif;
+	struct ieee80211_conf *conf = NULL;
+	int ret = 0;
+
+	if (!vif || !priv->is_open)
+		return;
+
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+		return;
+
+	iwl_legacy_scan_cancel_timeout(priv, 200);
+
+	conf = iwl_legacy_ieee80211_get_hw_conf(priv->hw);
+
+	ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+	iwl_legacy_commit_rxon(priv, ctx);
+
+	ret = iwl_legacy_send_rxon_timing(priv, ctx);
+	if (ret)
+		IWL_WARN(priv, "RXON timing - "
+			    "Attempting to continue.\n");
+
+	ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
+
+	iwl_legacy_set_rxon_ht(priv, &priv->current_ht_config);
+
+	if (priv->cfg->ops->hcmd->set_rxon_chain)
+		priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
+
+	ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
+
+	IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
+			vif->bss_conf.aid, vif->bss_conf.beacon_int);
+
+	if (vif->bss_conf.use_short_preamble)
+		ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
+	else
+		ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
+
+	if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
+		if (vif->bss_conf.use_short_slot)
+			ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
+		else
+			ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
+	}
+
+	iwl_legacy_commit_rxon(priv, ctx);
+
+	IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
+			vif->bss_conf.aid, ctx->active.bssid_addr);
+
+	switch (vif->type) {
+	case NL80211_IFTYPE_STATION:
+		break;
+	case NL80211_IFTYPE_ADHOC:
+		iwl4965_send_beacon_cmd(priv);
+		break;
+	default:
+		IWL_ERR(priv, "%s Should not be called in %d mode\n",
+			  __func__, vif->type);
+		break;
+	}
+
+	/* the chain noise calibration will enabled PM upon completion
+	 * If chain noise has already been run, then we need to enable
+	 * power management here */
+	if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
+		iwl_legacy_power_update_mode(priv, false);
+
+	/* Enable Rx differential gain and sensitivity calibrations */
+	iwl4965_chain_noise_reset(priv);
+	priv->start_calib = 1;
+}
+
+static void iwl4965_config_ap(struct iwl_priv *priv)
+{
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+	struct ieee80211_vif *vif = ctx->vif;
+	int ret = 0;
+
+	lockdep_assert_held(&priv->mutex);
+
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+		return;
+
+	/* The following should be done only at AP bring up */
+	if (!iwl_legacy_is_associated_ctx(ctx)) {
+
+		/* RXON - unassoc (to set timing command) */
+		ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+		iwl_legacy_commit_rxon(priv, ctx);
+
+		/* RXON Timing */
+		ret = iwl_legacy_send_rxon_timing(priv, ctx);
+		if (ret)
+			IWL_WARN(priv, "RXON timing failed - "
+					"Attempting to continue.\n");
+
+		/* AP has all antennas */
+		priv->chain_noise_data.active_chains =
+			priv->hw_params.valid_rx_ant;
+		iwl_legacy_set_rxon_ht(priv, &priv->current_ht_config);
+		if (priv->cfg->ops->hcmd->set_rxon_chain)
+			priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
+
+		ctx->staging.assoc_id = 0;
+
+		if (vif->bss_conf.use_short_preamble)
+			ctx->staging.flags |=
+				RXON_FLG_SHORT_PREAMBLE_MSK;
+		else
+			ctx->staging.flags &=
+				~RXON_FLG_SHORT_PREAMBLE_MSK;
+
+		if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK) {
+			if (vif->bss_conf.use_short_slot)
+				ctx->staging.flags |=
+					RXON_FLG_SHORT_SLOT_MSK;
+			else
+				ctx->staging.flags &=
+					~RXON_FLG_SHORT_SLOT_MSK;
+		}
+		/* need to send beacon cmd before committing assoc RXON! */
+		iwl4965_send_beacon_cmd(priv);
+		/* restore RXON assoc */
+		ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
+		iwl_legacy_commit_rxon(priv, ctx);
+	}
+	iwl4965_send_beacon_cmd(priv);
+}
+
+static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = {
+	.get_hcmd_size = iwl4965_get_hcmd_size,
+	.build_addsta_hcmd = iwl4965_build_addsta_hcmd,
+	.request_scan = iwl4965_request_scan,
+	.post_scan = iwl4965_post_scan,
+};
+
+static struct iwl_lib_ops iwl4965_lib = {
+	.set_hw_params = iwl4965_hw_set_hw_params,
+	.txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl,
+	.txq_attach_buf_to_tfd = iwl4965_hw_txq_attach_buf_to_tfd,
+	.txq_free_tfd = iwl4965_hw_txq_free_tfd,
+	.txq_init = iwl4965_hw_tx_queue_init,
+	.rx_handler_setup = iwl4965_rx_handler_setup,
+	.is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr,
+	.init_alive_start = iwl4965_init_alive_start,
+	.load_ucode = iwl4965_load_bsm,
+	.dump_nic_event_log = iwl4965_dump_nic_event_log,
+	.dump_nic_error_log = iwl4965_dump_nic_error_log,
+	.dump_fh = iwl4965_dump_fh,
+	.set_channel_switch = iwl4965_hw_channel_switch,
+	.apm_ops = {
+		.init = iwl_legacy_apm_init,
+		.config = iwl4965_nic_config,
+	},
+	.eeprom_ops = {
+		.regulatory_bands = {
+			EEPROM_REGULATORY_BAND_1_CHANNELS,
+			EEPROM_REGULATORY_BAND_2_CHANNELS,
+			EEPROM_REGULATORY_BAND_3_CHANNELS,
+			EEPROM_REGULATORY_BAND_4_CHANNELS,
+			EEPROM_REGULATORY_BAND_5_CHANNELS,
+			EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS,
+			EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
+		},
+		.acquire_semaphore = iwl4965_eeprom_acquire_semaphore,
+		.release_semaphore = iwl4965_eeprom_release_semaphore,
+	},
+	.send_tx_power	= iwl4965_send_tx_power,
+	.update_chain_flags = iwl4965_update_chain_flags,
+	.temp_ops = {
+		.temperature = iwl4965_temperature_calib,
+	},
+	.debugfs_ops = {
+		.rx_stats_read = iwl4965_ucode_rx_stats_read,
+		.tx_stats_read = iwl4965_ucode_tx_stats_read,
+		.general_stats_read = iwl4965_ucode_general_stats_read,
+	},
+	.check_plcp_health = iwl4965_good_plcp_health,
+};
+
+static const struct iwl_legacy_ops iwl4965_legacy_ops = {
+	.post_associate = iwl4965_post_associate,
+	.config_ap = iwl4965_config_ap,
+	.manage_ibss_station = iwl4965_manage_ibss_station,
+	.update_bcast_stations = iwl4965_update_bcast_stations,
+};
+
+struct ieee80211_ops iwl4965_hw_ops = {
+	.tx = iwl4965_mac_tx,
+	.start = iwl4965_mac_start,
+	.stop = iwl4965_mac_stop,
+	.add_interface = iwl_legacy_mac_add_interface,
+	.remove_interface = iwl_legacy_mac_remove_interface,
+	.change_interface = iwl_legacy_mac_change_interface,
+	.config = iwl_legacy_mac_config,
+	.configure_filter = iwl4965_configure_filter,
+	.set_key = iwl4965_mac_set_key,
+	.update_tkip_key = iwl4965_mac_update_tkip_key,
+	.conf_tx = iwl_legacy_mac_conf_tx,
+	.reset_tsf = iwl_legacy_mac_reset_tsf,
+	.bss_info_changed = iwl_legacy_mac_bss_info_changed,
+	.ampdu_action = iwl4965_mac_ampdu_action,
+	.hw_scan = iwl_legacy_mac_hw_scan,
+	.sta_add = iwl4965_mac_sta_add,
+	.sta_remove = iwl_legacy_mac_sta_remove,
+	.channel_switch = iwl4965_mac_channel_switch,
+	.tx_last_beacon = iwl_legacy_mac_tx_last_beacon,
+};
+
+static const struct iwl_ops iwl4965_ops = {
+	.lib = &iwl4965_lib,
+	.hcmd = &iwl4965_hcmd,
+	.utils = &iwl4965_hcmd_utils,
+	.led = &iwl4965_led_ops,
+	.legacy = &iwl4965_legacy_ops,
+	.ieee80211_ops = &iwl4965_hw_ops,
+};
+
+static struct iwl_base_params iwl4965_base_params = {
+	.eeprom_size = IWL4965_EEPROM_IMG_SIZE,
+	.num_of_queues = IWL49_NUM_QUEUES,
+	.num_of_ampdu_queues = IWL49_NUM_AMPDU_QUEUES,
+	.pll_cfg_val = 0,
+	.set_l0s = true,
+	.use_bsm = true,
+	.led_compensation = 61,
+	.chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS,
+	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
+	.wd_timeout = IWL_DEF_WD_TIMEOUT,
+	.temperature_kelvin = true,
+	.max_event_log_size = 512,
+	.ucode_tracing = true,
+	.sensitivity_calib_by_driver = true,
+	.chain_noise_calib_by_driver = true,
+};
+
+struct iwl_cfg iwl4965_cfg = {
+	.name = "Intel(R) Wireless WiFi Link 4965AGN",
+	.fw_name_pre = IWL4965_FW_PRE,
+	.ucode_api_max = IWL4965_UCODE_API_MAX,
+	.ucode_api_min = IWL4965_UCODE_API_MIN,
+	.sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
+	.valid_tx_ant = ANT_AB,
+	.valid_rx_ant = ANT_ABC,
+	.eeprom_ver = EEPROM_4965_EEPROM_VERSION,
+	.eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION,
+	.ops = &iwl4965_ops,
+	.mod_params = &iwl4965_mod_params,
+	.base_params = &iwl4965_base_params,
+	.led_mode = IWL_LED_BLINK,
+	/*
+	 * Force use of chains B and C for scan RX on 5 GHz band
+	 * because the device has off-channel reception on chain A.
+	 */
+	.scan_rx_antennas[IEEE80211_BAND_5GHZ] = ANT_BC,
+};
+
+/* Module firmware */
+MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX));