[IWLWIFI]: add iwlwifi wireless drivers

This patch adds the mac80211 based wireless drivers for the Intel
PRO/Wireless 3945ABG/BG Network Connection and Intel Wireless WiFi
Link AGN (4965) adapters.

[ Move driver into it's own directory -DaveM ]

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4719 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
new file mode 100644
index 0000000..ba35b3a
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -0,0 +1,4719 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2007 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:
+ * James P. Ketrenos <ipw2100-admin@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/version.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <net/mac80211.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+
+#include "iwlwifi.h"
+#include "iwl-4965.h"
+#include "iwl-helpers.h"
+
+#define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
+	[IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
+				    IWL_RATE_SISO_##s##M_PLCP, \
+				    IWL_RATE_MIMO_##s##M_PLCP, \
+				    IWL_RATE_##r##M_IEEE,      \
+				    IWL_RATE_##ip##M_INDEX,    \
+				    IWL_RATE_##in##M_INDEX,    \
+				    IWL_RATE_##rp##M_INDEX,    \
+				    IWL_RATE_##rn##M_INDEX,    \
+				    IWL_RATE_##pp##M_INDEX,    \
+				    IWL_RATE_##np##M_INDEX }
+
+/*
+ * Parameter order:
+ *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
+ *
+ * If there isn't a valid next or previous rate then INV is used which
+ * maps to IWL_RATE_INVALID
+ *
+ */
+const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
+	IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
+	IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
+	IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
+	IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
+	IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
+	IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
+	IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
+	IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
+	IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
+	IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
+	IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
+	IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
+	IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
+};
+
+static int is_fat_channel(__le32 rxon_flags)
+{
+	return (rxon_flags & RXON_FLG_CHANNEL_MODE_PURE_40_MSK) ||
+		(rxon_flags & RXON_FLG_CHANNEL_MODE_MIXED_MSK);
+}
+
+static u8 is_single_stream(struct iwl_priv *priv)
+{
+#ifdef CONFIG_IWLWIFI_HT
+	if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht ||
+	    (priv->active_rate_ht[1] == 0) ||
+	    (priv->ps_mode == IWL_MIMO_PS_STATIC))
+		return 1;
+#else
+	return 1;
+#endif	/*CONFIG_IWLWIFI_HT */
+	return 0;
+}
+
+/*
+ * Determine how many receiver/antenna chains to use.
+ * More provides better reception via diversity.  Fewer saves power.
+ * MIMO (dual stream) requires at least 2, but works better with 3.
+ * This does not determine *which* chains to use, just how many.
+ */
+static int iwl4965_get_rx_chain_counter(struct iwl_priv *priv,
+					u8 *idle_state, u8 *rx_state)
+{
+	u8 is_single = is_single_stream(priv);
+	u8 is_cam = test_bit(STATUS_POWER_PMI, &priv->status) ? 0 : 1;
+
+	/* # of Rx chains to use when expecting MIMO. */
+	if (is_single || (!is_cam && (priv->ps_mode == IWL_MIMO_PS_STATIC)))
+		*rx_state = 2;
+	else
+		*rx_state = 3;
+
+	/* # Rx chains when idling and maybe trying to save power */
+	switch (priv->ps_mode) {
+	case IWL_MIMO_PS_STATIC:
+	case IWL_MIMO_PS_DYNAMIC:
+		*idle_state = (is_cam) ? 2 : 1;
+		break;
+	case IWL_MIMO_PS_NONE:
+		*idle_state = (is_cam) ? *rx_state : 1;
+		break;
+	default:
+		*idle_state = 1;
+		break;
+	}
+
+	return 0;
+}
+
+int iwl_hw_rxq_stop(struct iwl_priv *priv)
+{
+	int rc;
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	rc = iwl_grab_restricted_access(priv);
+	if (rc) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return rc;
+	}
+
+	/* stop HW */
+	iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
+	rc = iwl_poll_restricted_bit(priv, FH_MEM_RSSR_RX_STATUS_REG,
+				     (1 << 24), 1000);
+	if (rc < 0)
+		IWL_ERROR("Can't stop Rx DMA.\n");
+
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return 0;
+}
+
+u8 iwl_hw_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 == IEEE80211_IF_TYPE_IBSS) ||
+	    (priv->iw_mode == IEEE80211_IF_TYPE_AP))
+		start = IWL_STA_ID;
+
+	if (is_broadcast_ether_addr(addr))
+		return IWL4965_BROADCAST_ID;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	for (i = start; i < priv->hw_setting.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("can not find STA " MAC_FMT " total %d\n",
+			MAC_ARG(addr), priv->num_stations);
+
+ out:
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+	return ret;
+}
+
+static int iwl4965_nic_set_pwr_src(struct iwl_priv *priv, int pwr_max)
+{
+	int rc = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	rc = iwl_grab_restricted_access(priv);
+	if (rc) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return rc;
+	}
+
+	if (!pwr_max) {
+		u32 val;
+
+		rc = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
+					   &val);
+
+		if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
+			iwl_set_bits_mask_restricted_reg(
+				priv, APMG_PS_CTRL_REG,
+				APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
+				~APMG_PS_CTRL_MSK_PWR_SRC);
+	} else
+		iwl_set_bits_mask_restricted_reg(
+			priv, APMG_PS_CTRL_REG,
+			APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
+			~APMG_PS_CTRL_MSK_PWR_SRC);
+
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return rc;
+}
+
+static int iwl4965_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
+{
+	int rc;
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	rc = iwl_grab_restricted_access(priv);
+	if (rc) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return rc;
+	}
+
+	/* stop HW */
+	iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
+
+	iwl_write_restricted(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0);
+	iwl_write_restricted(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG,
+			     rxq->dma_addr >> 8);
+
+	iwl_write_restricted(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG,
+			     (priv->hw_setting.shared_phys +
+			      offsetof(struct iwl_shared, val0)) >> 4);
+
+	iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG,
+			     FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL |
+			     FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL |
+			     IWL_FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K |
+			     /*0x10 << 4 | */
+			     (RX_QUEUE_SIZE_LOG <<
+			      FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT));
+
+	/*
+	 * iwl_write32(priv,CSR_INT_COAL_REG,0);
+	 */
+
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return 0;
+}
+
+static int iwl4965_kw_init(struct iwl_priv *priv)
+{
+	unsigned long flags;
+	int rc;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	rc = iwl_grab_restricted_access(priv);
+	if (rc)
+		goto out;
+
+	iwl_write_restricted(priv, IWL_FH_KW_MEM_ADDR_REG,
+			     priv->kw.dma_addr >> 4);
+	iwl_release_restricted_access(priv);
+out:
+	spin_unlock_irqrestore(&priv->lock, flags);
+	return rc;
+}
+
+static int iwl4965_kw_alloc(struct iwl_priv *priv)
+{
+	struct pci_dev *dev = priv->pci_dev;
+	struct iwl_kw *kw = &priv->kw;
+
+	kw->size = IWL4965_KW_SIZE;	/* TBW need set somewhere else */
+	kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr);
+	if (!kw->v_addr)
+		return -ENOMEM;
+
+	return 0;
+}
+
+#define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \
+			    ? # x " " : "")
+
+int iwl4965_set_fat_chan_info(struct iwl_priv *priv, int phymode, u16 channel,
+			      const struct iwl_eeprom_channel *eeprom_ch,
+			      u8 fat_extension_channel)
+{
+	struct iwl_channel_info *ch_info;
+
+	ch_info = (struct iwl_channel_info *)
+			iwl_get_channel_info(priv, phymode, channel);
+
+	if (!is_channel_valid(ch_info))
+		return -1;
+
+	IWL_DEBUG_INFO("FAT Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
+			" %ddBm): Ad-Hoc %ssupported\n",
+			ch_info->channel,
+			is_channel_a_band(ch_info) ?
+			"5.2" : "2.4",
+			CHECK_AND_PRINT(IBSS),
+			CHECK_AND_PRINT(ACTIVE),
+			CHECK_AND_PRINT(RADAR),
+			CHECK_AND_PRINT(WIDE),
+			CHECK_AND_PRINT(NARROW),
+			CHECK_AND_PRINT(DFS),
+			eeprom_ch->flags,
+			eeprom_ch->max_power_avg,
+			((eeprom_ch->flags & EEPROM_CHANNEL_IBSS)
+			 && !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ?
+			"" : "not ");
+
+	ch_info->fat_eeprom = *eeprom_ch;
+	ch_info->fat_max_power_avg = eeprom_ch->max_power_avg;
+	ch_info->fat_curr_txpow = eeprom_ch->max_power_avg;
+	ch_info->fat_min_power = 0;
+	ch_info->fat_scan_power = eeprom_ch->max_power_avg;
+	ch_info->fat_flags = eeprom_ch->flags;
+	ch_info->fat_extension_channel = fat_extension_channel;
+
+	return 0;
+}
+
+static void iwl4965_kw_free(struct iwl_priv *priv)
+{
+	struct pci_dev *dev = priv->pci_dev;
+	struct iwl_kw *kw = &priv->kw;
+
+	if (kw->v_addr) {
+		pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr);
+		memset(kw, 0, sizeof(*kw));
+	}
+}
+
+/**
+ * iwl4965_txq_ctx_reset - Reset TX queue context
+ * Destroys all DMA structures and initialise them again
+ *
+ * @param priv
+ * @return error code
+ */
+static int iwl4965_txq_ctx_reset(struct iwl_priv *priv)
+{
+	int rc = 0;
+	int txq_id, slots_num;
+	unsigned long flags;
+
+	iwl4965_kw_free(priv);
+
+	iwl_hw_txq_ctx_free(priv);
+
+	/* Tx CMD queue */
+	rc = iwl4965_kw_alloc(priv);
+	if (rc) {
+		IWL_ERROR("Keep Warm allocation failed");
+		goto error_kw;
+	}
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	rc = iwl_grab_restricted_access(priv);
+	if (unlikely(rc)) {
+		IWL_ERROR("TX reset failed");
+		spin_unlock_irqrestore(&priv->lock, flags);
+		goto error_reset;
+	}
+
+	iwl_write_restricted_reg(priv, SCD_TXFACT, 0);
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	rc = iwl4965_kw_init(priv);
+	if (rc) {
+		IWL_ERROR("kw_init failed\n");
+		goto error_reset;
+	}
+
+	/* Tx queue(s) */
+	for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) {
+		slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
+					TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+		rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
+				       txq_id);
+		if (rc) {
+			IWL_ERROR("Tx %d queue init failed\n", txq_id);
+			goto error;
+		}
+	}
+
+	return rc;
+
+ error:
+	iwl_hw_txq_ctx_free(priv);
+ error_reset:
+	iwl4965_kw_free(priv);
+ error_kw:
+	return rc;
+}
+
+int iwl_hw_nic_init(struct iwl_priv *priv)
+{
+	int rc;
+	unsigned long flags;
+	struct iwl_rx_queue *rxq = &priv->rxq;
+	u8 rev_id;
+	u32 val;
+	u8 val_link;
+
+	iwl_power_init_handle(priv);
+
+	/* nic_init */
+	spin_lock_irqsave(&priv->lock, flags);
+
+	iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
+		    CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
+
+	iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+	rc = iwl_poll_bit(priv, CSR_GP_CNTRL,
+			  CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+			  CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
+	if (rc < 0) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		IWL_DEBUG_INFO("Failed to init the card\n");
+		return rc;
+	}
+
+	rc = iwl_grab_restricted_access(priv);
+	if (rc) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return rc;
+	}
+
+	iwl_read_restricted_reg(priv, APMG_CLK_CTRL_REG);
+
+	iwl_write_restricted_reg(priv, APMG_CLK_CTRL_REG,
+				 APMG_CLK_VAL_DMA_CLK_RQT |
+				 APMG_CLK_VAL_BSM_CLK_RQT);
+	iwl_read_restricted_reg(priv, APMG_CLK_CTRL_REG);
+
+	udelay(20);
+
+	iwl_set_bits_restricted_reg(priv, APMG_PCIDEV_STT_REG,
+				    APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
+
+	iwl_release_restricted_access(priv);
+	iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	/* Determine HW type */
+	rc = pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
+	if (rc)
+		return rc;
+
+	IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id);
+
+	iwl4965_nic_set_pwr_src(priv, 1);
+	spin_lock_irqsave(&priv->lock, flags);
+
+	if ((rev_id & 0x80) == 0x80 && (rev_id & 0x7f) < 8) {
+		pci_read_config_dword(priv->pci_dev, PCI_REG_WUM8, &val);
+		/* Enable No Snoop field */
+		pci_write_config_dword(priv->pci_dev, PCI_REG_WUM8,
+				       val & ~(1 << 11));
+	}
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	/* Read the EEPROM */
+	rc = iwl_eeprom_init(priv);
+	if (rc)
+		return rc;
+
+	if (priv->eeprom.calib_version < EEPROM_TX_POWER_VERSION_NEW) {
+		IWL_ERROR("Older EEPROM detected!  Aborting.\n");
+		return -EINVAL;
+	}
+
+	pci_read_config_byte(priv->pci_dev, PCI_LINK_CTRL, &val_link);
+
+	/* disable L1 entry -- workaround for pre-B1 */
+	pci_write_config_byte(priv->pci_dev, PCI_LINK_CTRL, val_link & ~0x02);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	/* set CSR_HW_CONFIG_REG for uCode use */
+
+	iwl_set_bit(priv, CSR_SW_VER, CSR_HW_IF_CONFIG_REG_BIT_KEDRON_R |
+		    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
+		    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
+
+	rc = iwl_grab_restricted_access(priv);
+	if (rc < 0) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		IWL_DEBUG_INFO("Failed to init the card\n");
+		return rc;
+	}
+
+	iwl_read_restricted_reg(priv, APMG_PS_CTRL_REG);
+	iwl_set_bits_restricted_reg(priv, APMG_PS_CTRL_REG,
+				    APMG_PS_CTRL_VAL_RESET_REQ);
+	udelay(5);
+	iwl_clear_bits_restricted_reg(priv, APMG_PS_CTRL_REG,
+				      APMG_PS_CTRL_VAL_RESET_REQ);
+
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	iwl_hw_card_show_info(priv);
+
+	/* end nic_init */
+
+	/* Allocate the RX queue, or reset if it is already allocated */
+	if (!rxq->bd) {
+		rc = iwl_rx_queue_alloc(priv);
+		if (rc) {
+			IWL_ERROR("Unable to initialize Rx queue\n");
+			return -ENOMEM;
+		}
+	} else
+		iwl_rx_queue_reset(priv, rxq);
+
+	iwl_rx_replenish(priv);
+
+	iwl4965_rx_init(priv, rxq);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	rxq->need_update = 1;
+	iwl_rx_queue_update_write_ptr(priv, rxq);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+	rc = iwl4965_txq_ctx_reset(priv);
+	if (rc)
+		return rc;
+
+	if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
+		IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n");
+
+	if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
+		IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n");
+
+	set_bit(STATUS_INIT, &priv->status);
+
+	return 0;
+}
+
+int iwl_hw_nic_stop_master(struct iwl_priv *priv)
+{
+	int rc = 0;
+	u32 reg_val;
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	/* set stop master bit */
+	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
+
+	reg_val = iwl_read32(priv, CSR_GP_CNTRL);
+
+	if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE ==
+	    (reg_val & CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE))
+		IWL_DEBUG_INFO("Card in power save, master is already "
+			       "stopped\n");
+	else {
+		rc = iwl_poll_bit(priv, CSR_RESET,
+				  CSR_RESET_REG_FLAG_MASTER_DISABLED,
+				  CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
+		if (rc < 0) {
+			spin_unlock_irqrestore(&priv->lock, flags);
+			return rc;
+		}
+	}
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+	IWL_DEBUG_INFO("stop master\n");
+
+	return rc;
+}
+
+void iwl_hw_txq_ctx_stop(struct iwl_priv *priv)
+{
+
+	int txq_id;
+	unsigned long flags;
+
+	/* reset TFD queues */
+	for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) {
+		spin_lock_irqsave(&priv->lock, flags);
+		if (iwl_grab_restricted_access(priv)) {
+			spin_unlock_irqrestore(&priv->lock, flags);
+			continue;
+		}
+
+		iwl_write_restricted(priv,
+				     IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id),
+				     0x0);
+		iwl_poll_restricted_bit(priv, IWL_FH_TSSR_TX_STATUS_REG,
+					IWL_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE
+					(txq_id), 200);
+		iwl_release_restricted_access(priv);
+		spin_unlock_irqrestore(&priv->lock, flags);
+	}
+
+	iwl_hw_txq_ctx_free(priv);
+}
+
+int iwl_hw_nic_reset(struct iwl_priv *priv)
+{
+	int rc = 0;
+	unsigned long flags;
+
+	iwl_hw_nic_stop_master(priv);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+
+	udelay(10);
+
+	iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+	rc = iwl_poll_bit(priv, CSR_RESET,
+			  CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+			  CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25);
+
+	udelay(10);
+
+	rc = iwl_grab_restricted_access(priv);
+	if (!rc) {
+		iwl_write_restricted_reg(priv, APMG_CLK_EN_REG,
+					 APMG_CLK_VAL_DMA_CLK_RQT |
+					 APMG_CLK_VAL_BSM_CLK_RQT);
+
+		udelay(10);
+
+		iwl_set_bits_restricted_reg(priv, APMG_PCIDEV_STT_REG,
+				APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
+
+		iwl_release_restricted_access(priv);
+	}
+
+	clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+	wake_up_interruptible(&priv->wait_command_queue);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return rc;
+
+}
+
+#define REG_RECALIB_PERIOD (60)
+
+/**
+ * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
+ *
+ * This callback is provided in order to queue the statistics_work
+ * in work_queue context (v. softirq)
+ *
+ * This timer function is continually reset to execute within
+ * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
+ * was received.  We need to ensure we receive the statistics in order
+ * to update the temperature used for calibrating the TXPOWER.  However,
+ * we can't send the statistics command from softirq context (which
+ * is the context which timers run at) so we have to queue off the
+ * statistics_work to actually send the command to the hardware.
+ */
+static void iwl4965_bg_statistics_periodic(unsigned long data)
+{
+	struct iwl_priv *priv = (struct iwl_priv *)data;
+
+	queue_work(priv->workqueue, &priv->statistics_work);
+}
+
+/**
+ * iwl4965_bg_statistics_work - Send the statistics request to the hardware.
+ *
+ * This is queued by iwl_bg_statistics_periodic.
+ */
+static void iwl4965_bg_statistics_work(struct work_struct *work)
+{
+	struct iwl_priv *priv = container_of(work, struct iwl_priv,
+					     statistics_work);
+
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+		return;
+
+	mutex_lock(&priv->mutex);
+	iwl_send_statistics_request(priv);
+	mutex_unlock(&priv->mutex);
+}
+
+#define CT_LIMIT_CONST		259
+#define TM_CT_KILL_THRESHOLD	110
+
+void iwl4965_rf_kill_ct_config(struct iwl_priv *priv)
+{
+	struct iwl_ct_kill_config cmd;
+	u32 R1, R2, R3;
+	u32 temp_th;
+	u32 crit_temperature;
+	unsigned long flags;
+	int rc = 0;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+		    CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	if (priv->statistics.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK) {
+		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]);
+	} else {
+		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]);
+	}
+
+	temp_th = CELSIUS_TO_KELVIN(TM_CT_KILL_THRESHOLD);
+
+	crit_temperature = ((temp_th * (R3-R1))/CT_LIMIT_CONST) + R2;
+	cmd.critical_temperature_R =  cpu_to_le32(crit_temperature);
+	rc = iwl_send_cmd_pdu(priv,
+			      REPLY_CT_KILL_CONFIG_CMD, sizeof(cmd), &cmd);
+	if (rc)
+		IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
+	else
+		IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded\n");
+}
+
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+
+/* "false alarms" are signals that our DSP tries to lock onto,
+ *   but then determines that they are either noise, or transmissions
+ *   from a distant wireless network (also "noise", really) that get
+ *   "stepped on" by stronger transmissions within our own network.
+ * This algorithm attempts to set a sensitivity level that is high
+ *   enough to receive all of our own network traffic, but not so
+ *   high that our DSP gets too busy trying to lock onto non-network
+ *   activity/noise. */
+static int iwl4965_sens_energy_cck(struct iwl_priv *priv,
+				   u32 norm_fa,
+				   u32 rx_enable_time,
+				   struct statistics_general_data *rx_info)
+{
+	u32 max_nrg_cck = 0;
+	int i = 0;
+	u8 max_silence_rssi = 0;
+	u32 silence_ref = 0;
+	u8 silence_rssi_a = 0;
+	u8 silence_rssi_b = 0;
+	u8 silence_rssi_c = 0;
+	u32 val;
+
+	/* "false_alarms" values below are cross-multiplications to assess the
+	 *   numbers of false alarms within the measured period of actual Rx
+	 *   (Rx is off when we're txing), vs the min/max expected false alarms
+	 *   (some should be expected if rx is sensitive enough) in a
+	 *   hypothetical listening period of 200 time units (TU), 204.8 msec:
+	 *
+	 * MIN_FA/fixed-time < false_alarms/actual-rx-time < MAX_FA/beacon-time
+	 *
+	 * */
+	u32 false_alarms = norm_fa * 200 * 1024;
+	u32 max_false_alarms = MAX_FA_CCK * rx_enable_time;
+	u32 min_false_alarms = MIN_FA_CCK * rx_enable_time;
+	struct iwl_sensitivity_data *data = NULL;
+
+	data = &(priv->sensitivity_data);
+
+	data->nrg_auto_corr_silence_diff = 0;
+
+	/* Find max silence rssi among all 3 receivers.
+	 * This is background noise, which may include transmissions from other
+	 *    networks, measured during silence before our network's beacon */
+	silence_rssi_a = (u8)((rx_info->beacon_silence_rssi_a &
+			    ALL_BAND_FILTER)>>8);
+	silence_rssi_b = (u8)((rx_info->beacon_silence_rssi_b &
+			    ALL_BAND_FILTER)>>8);
+	silence_rssi_c = (u8)((rx_info->beacon_silence_rssi_c &
+			    ALL_BAND_FILTER)>>8);
+
+	val = max(silence_rssi_b, silence_rssi_c);
+	max_silence_rssi = max(silence_rssi_a, (u8) val);
+
+	/* Store silence rssi in 20-beacon history table */
+	data->nrg_silence_rssi[data->nrg_silence_idx] = max_silence_rssi;
+	data->nrg_silence_idx++;
+	if (data->nrg_silence_idx >= NRG_NUM_PREV_STAT_L)
+		data->nrg_silence_idx = 0;
+
+	/* Find max silence rssi across 20 beacon history */
+	for (i = 0; i < NRG_NUM_PREV_STAT_L; i++) {
+		val = data->nrg_silence_rssi[i];
+		silence_ref = max(silence_ref, val);
+	}
+	IWL_DEBUG_CALIB("silence a %u, b %u, c %u, 20-bcn max %u\n",
+			silence_rssi_a, silence_rssi_b, silence_rssi_c,
+			silence_ref);
+
+	/* Find max rx energy (min value!) among all 3 receivers,
+	 *   measured during beacon frame.
+	 * Save it in 10-beacon history table. */
+	i = data->nrg_energy_idx;
+	val = min(rx_info->beacon_energy_b, rx_info->beacon_energy_c);
+	data->nrg_value[i] = min(rx_info->beacon_energy_a, val);
+
+	data->nrg_energy_idx++;
+	if (data->nrg_energy_idx >= 10)
+		data->nrg_energy_idx = 0;
+
+	/* Find min rx energy (max value) across 10 beacon history.
+	 * This is the minimum signal level that we want to receive well.
+	 * Add backoff (margin so we don't miss slightly lower energy frames).
+	 * This establishes an upper bound (min value) for energy threshold. */
+	max_nrg_cck = data->nrg_value[0];
+	for (i = 1; i < 10; i++)
+		max_nrg_cck = (u32) max(max_nrg_cck, (data->nrg_value[i]));
+	max_nrg_cck += 6;
+
+	IWL_DEBUG_CALIB("rx energy a %u, b %u, c %u, 10-bcn max/min %u\n",
+			rx_info->beacon_energy_a, rx_info->beacon_energy_b,
+			rx_info->beacon_energy_c, max_nrg_cck - 6);
+
+	/* Count number of consecutive beacons with fewer-than-desired
+	 *   false alarms. */
+	if (false_alarms < min_false_alarms)
+		data->num_in_cck_no_fa++;
+	else
+		data->num_in_cck_no_fa = 0;
+	IWL_DEBUG_CALIB("consecutive bcns with few false alarms = %u\n",
+			data->num_in_cck_no_fa);
+
+	/* If we got too many false alarms this time, reduce sensitivity */
+	if (false_alarms > max_false_alarms) {
+		IWL_DEBUG_CALIB("norm FA %u > max FA %u\n",
+			     false_alarms, max_false_alarms);
+		IWL_DEBUG_CALIB("... reducing sensitivity\n");
+		data->nrg_curr_state = IWL_FA_TOO_MANY;
+
+		if (data->auto_corr_cck > AUTO_CORR_MAX_TH_CCK) {
+			/* Store for "fewer than desired" on later beacon */
+			data->nrg_silence_ref = silence_ref;
+
+			/* increase energy threshold (reduce nrg value)
+			 *   to decrease sensitivity */
+			if (data->nrg_th_cck > (NRG_MAX_CCK + NRG_STEP_CCK))
+				data->nrg_th_cck = data->nrg_th_cck
+							 - NRG_STEP_CCK;
+		}
+
+		/* increase auto_corr values to decrease sensitivity */
+		if (data->auto_corr_cck < AUTO_CORR_MAX_TH_CCK)
+			data->auto_corr_cck = AUTO_CORR_MAX_TH_CCK + 1;
+		else {
+			val = data->auto_corr_cck + AUTO_CORR_STEP_CCK;
+			data->auto_corr_cck = min((u32)AUTO_CORR_MAX_CCK, val);
+		}
+		val = data->auto_corr_cck_mrc + AUTO_CORR_STEP_CCK;
+		data->auto_corr_cck_mrc = min((u32)AUTO_CORR_MAX_CCK_MRC, val);
+
+	/* Else if we got fewer than desired, increase sensitivity */
+	} else if (false_alarms < min_false_alarms) {
+		data->nrg_curr_state = IWL_FA_TOO_FEW;
+
+		/* Compare silence level with silence level for most recent
+		 *   healthy number or too many false alarms */
+		data->nrg_auto_corr_silence_diff = (s32)data->nrg_silence_ref -
+						   (s32)silence_ref;
+
+		IWL_DEBUG_CALIB("norm FA %u < min FA %u, silence diff %d\n",
+			 false_alarms, min_false_alarms,
+			 data->nrg_auto_corr_silence_diff);
+
+		/* Increase value to increase sensitivity, but only if:
+		 * 1a) previous beacon did *not* have *too many* false alarms
+		 * 1b) AND there's a significant difference in Rx levels
+		 *      from a previous beacon with too many, or healthy # FAs
+		 * OR 2) We've seen a lot of beacons (100) with too few
+		 *       false alarms */
+		if ((data->nrg_prev_state != IWL_FA_TOO_MANY) &&
+			((data->nrg_auto_corr_silence_diff > NRG_DIFF) ||
+			(data->num_in_cck_no_fa > MAX_NUMBER_CCK_NO_FA))) {
+
+			IWL_DEBUG_CALIB("... increasing sensitivity\n");
+			/* Increase nrg value to increase sensitivity */
+			val = data->nrg_th_cck + NRG_STEP_CCK;
+			data->nrg_th_cck = min((u32)NRG_MIN_CCK, val);
+
+			/* Decrease auto_corr values to increase sensitivity */
+			val = data->auto_corr_cck - AUTO_CORR_STEP_CCK;
+			data->auto_corr_cck = max((u32)AUTO_CORR_MIN_CCK, val);
+
+			val = data->auto_corr_cck_mrc - AUTO_CORR_STEP_CCK;
+			data->auto_corr_cck_mrc =
+					 max((u32)AUTO_CORR_MIN_CCK_MRC, val);
+
+		} else
+			IWL_DEBUG_CALIB("... but not changing sensitivity\n");
+
+	/* Else we got a healthy number of false alarms, keep status quo */
+	} else {
+		IWL_DEBUG_CALIB(" FA in safe zone\n");
+		data->nrg_curr_state = IWL_FA_GOOD_RANGE;
+
+		/* Store for use in "fewer than desired" with later beacon */
+		data->nrg_silence_ref = silence_ref;
+
+		/* If previous beacon had too many false alarms,
+		 *   give it some extra margin by reducing sensitivity again
+		 *   (but don't go below measured energy of desired Rx) */
+		if (IWL_FA_TOO_MANY == data->nrg_prev_state) {
+			IWL_DEBUG_CALIB("... increasing margin\n");
+			data->nrg_th_cck -= NRG_MARGIN;
+		}
+	}
+
+	/* Make sure the energy threshold does not go above the measured
+	 * energy of the desired Rx signals (reduced by backoff margin),
+	 * or else we might start missing Rx frames.
+	 * Lower value is higher energy, so we use max()!
+	 */
+	data->nrg_th_cck = max(max_nrg_cck, data->nrg_th_cck);
+	IWL_DEBUG_CALIB("new nrg_th_cck %u\n", data->nrg_th_cck);
+
+	data->nrg_prev_state = data->nrg_curr_state;
+
+	return 0;
+}
+
+
+static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv *priv,
+				       u32 norm_fa,
+				       u32 rx_enable_time)
+{
+	u32 val;
+	u32 false_alarms = norm_fa * 200 * 1024;
+	u32 max_false_alarms = MAX_FA_OFDM * rx_enable_time;
+	u32 min_false_alarms = MIN_FA_OFDM * rx_enable_time;
+	struct iwl_sensitivity_data *data = NULL;
+
+	data = &(priv->sensitivity_data);
+
+	/* If we got too many false alarms this time, reduce sensitivity */
+	if (false_alarms > max_false_alarms) {
+
+		IWL_DEBUG_CALIB("norm FA %u > max FA %u)\n",
+			     false_alarms, max_false_alarms);
+
+		val = data->auto_corr_ofdm + AUTO_CORR_STEP_OFDM;
+		data->auto_corr_ofdm =
+				min((u32)AUTO_CORR_MAX_OFDM, val);
+
+		val = data->auto_corr_ofdm_mrc + AUTO_CORR_STEP_OFDM;
+		data->auto_corr_ofdm_mrc =
+				min((u32)AUTO_CORR_MAX_OFDM_MRC, val);
+
+		val = data->auto_corr_ofdm_x1 + AUTO_CORR_STEP_OFDM;
+		data->auto_corr_ofdm_x1 =
+				min((u32)AUTO_CORR_MAX_OFDM_X1, val);
+
+		val = data->auto_corr_ofdm_mrc_x1 + AUTO_CORR_STEP_OFDM;
+		data->auto_corr_ofdm_mrc_x1 =
+				min((u32)AUTO_CORR_MAX_OFDM_MRC_X1, val);
+	}
+
+	/* Else if we got fewer than desired, increase sensitivity */
+	else if (false_alarms < min_false_alarms) {
+
+		IWL_DEBUG_CALIB("norm FA %u < min FA %u\n",
+			     false_alarms, min_false_alarms);
+
+		val = data->auto_corr_ofdm - AUTO_CORR_STEP_OFDM;
+		data->auto_corr_ofdm =
+				max((u32)AUTO_CORR_MIN_OFDM, val);
+
+		val = data->auto_corr_ofdm_mrc - AUTO_CORR_STEP_OFDM;
+		data->auto_corr_ofdm_mrc =
+				max((u32)AUTO_CORR_MIN_OFDM_MRC, val);
+
+		val = data->auto_corr_ofdm_x1 - AUTO_CORR_STEP_OFDM;
+		data->auto_corr_ofdm_x1 =
+				max((u32)AUTO_CORR_MIN_OFDM_X1, val);
+
+		val = data->auto_corr_ofdm_mrc_x1 - AUTO_CORR_STEP_OFDM;
+		data->auto_corr_ofdm_mrc_x1 =
+				max((u32)AUTO_CORR_MIN_OFDM_MRC_X1, val);
+	}
+
+	else
+		IWL_DEBUG_CALIB("min FA %u < norm FA %u < max FA %u OK\n",
+			 min_false_alarms, false_alarms, max_false_alarms);
+
+	return 0;
+}
+
+static int iwl_sensitivity_callback(struct iwl_priv *priv,
+				    struct iwl_cmd *cmd, struct sk_buff *skb)
+{
+	/* We didn't cache the SKB; let the caller free it */
+	return 1;
+}
+
+/* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */
+static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags)
+{
+	int rc = 0;
+	struct iwl_sensitivity_cmd cmd ;
+	struct iwl_sensitivity_data *data = NULL;
+	struct iwl_host_cmd cmd_out = {
+		.id = SENSITIVITY_CMD,
+		.len = sizeof(struct iwl_sensitivity_cmd),
+		.meta.flags = flags,
+		.data = &cmd,
+	};
+
+	data = &(priv->sensitivity_data);
+
+	memset(&cmd, 0, sizeof(cmd));
+
+	cmd.table[HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX] =
+				cpu_to_le16((u16)data->auto_corr_ofdm);
+	cmd.table[HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX] =
+				cpu_to_le16((u16)data->auto_corr_ofdm_mrc);
+	cmd.table[HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX] =
+				cpu_to_le16((u16)data->auto_corr_ofdm_x1);
+	cmd.table[HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX] =
+				cpu_to_le16((u16)data->auto_corr_ofdm_mrc_x1);
+
+	cmd.table[HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX] =
+				cpu_to_le16((u16)data->auto_corr_cck);
+	cmd.table[HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX] =
+				cpu_to_le16((u16)data->auto_corr_cck_mrc);
+
+	cmd.table[HD_MIN_ENERGY_CCK_DET_INDEX] =
+				cpu_to_le16((u16)data->nrg_th_cck);
+	cmd.table[HD_MIN_ENERGY_OFDM_DET_INDEX] =
+				cpu_to_le16((u16)data->nrg_th_ofdm);
+
+	cmd.table[HD_BARKER_CORR_TH_ADD_MIN_INDEX] =
+				__constant_cpu_to_le16(190);
+	cmd.table[HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX] =
+				__constant_cpu_to_le16(390);
+	cmd.table[HD_OFDM_ENERGY_TH_IN_INDEX] =
+				__constant_cpu_to_le16(62);
+
+	IWL_DEBUG_CALIB("ofdm: ac %u mrc %u x1 %u mrc_x1 %u thresh %u\n",
+			data->auto_corr_ofdm, data->auto_corr_ofdm_mrc,
+			data->auto_corr_ofdm_x1, data->auto_corr_ofdm_mrc_x1,
+			data->nrg_th_ofdm);
+
+	IWL_DEBUG_CALIB("cck: ac %u mrc %u thresh %u\n",
+			data->auto_corr_cck, data->auto_corr_cck_mrc,
+			data->nrg_th_cck);
+
+	cmd.control = SENSITIVITY_CMD_CONTROL_WORK_TABLE;
+
+	if (flags & CMD_ASYNC)
+		cmd_out.meta.u.callback = iwl_sensitivity_callback;
+
+	/* Don't send command to uCode if nothing has changed */
+	if (!memcmp(&cmd.table[0], &(priv->sensitivity_tbl[0]),
+		    sizeof(u16)*HD_TABLE_SIZE)) {
+		IWL_DEBUG_CALIB("No change in SENSITIVITY_CMD\n");
+		return 0;
+	}
+
+	/* Copy table for comparison next time */
+	memcpy(&(priv->sensitivity_tbl[0]), &(cmd.table[0]),
+	       sizeof(u16)*HD_TABLE_SIZE);
+
+	rc = iwl_send_cmd(priv, &cmd_out);
+	if (!rc) {
+		IWL_DEBUG_CALIB("SENSITIVITY_CMD succeeded\n");
+		return rc;
+	}
+
+	return 0;
+}
+
+void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force)
+{
+	int rc = 0;
+	int i;
+	struct iwl_sensitivity_data *data = NULL;
+
+	IWL_DEBUG_CALIB("Start iwl4965_init_sensitivity\n");
+
+	if (force)
+		memset(&(priv->sensitivity_tbl[0]), 0,
+			sizeof(u16)*HD_TABLE_SIZE);
+
+	/* Clear driver's sensitivity algo data */
+	data = &(priv->sensitivity_data);
+	memset(data, 0, sizeof(struct iwl_sensitivity_data));
+
+	data->num_in_cck_no_fa = 0;
+	data->nrg_curr_state = IWL_FA_TOO_MANY;
+	data->nrg_prev_state = IWL_FA_TOO_MANY;
+	data->nrg_silence_ref = 0;
+	data->nrg_silence_idx = 0;
+	data->nrg_energy_idx = 0;
+
+	for (i = 0; i < 10; i++)
+		data->nrg_value[i] = 0;
+
+	for (i = 0; i < NRG_NUM_PREV_STAT_L; i++)
+		data->nrg_silence_rssi[i] = 0;
+
+	data->auto_corr_ofdm = 90;
+	data->auto_corr_ofdm_mrc = 170;
+	data->auto_corr_ofdm_x1  = 105;
+	data->auto_corr_ofdm_mrc_x1 = 220;
+	data->auto_corr_cck = AUTO_CORR_CCK_MIN_VAL_DEF;
+	data->auto_corr_cck_mrc = 200;
+	data->nrg_th_cck = 100;
+	data->nrg_th_ofdm = 100;
+
+	data->last_bad_plcp_cnt_ofdm = 0;
+	data->last_fa_cnt_ofdm = 0;
+	data->last_bad_plcp_cnt_cck = 0;
+	data->last_fa_cnt_cck = 0;
+
+	/* Clear prior Sensitivity command data to force send to uCode */
+	if (force)
+		memset(&(priv->sensitivity_tbl[0]), 0,
+		    sizeof(u16)*HD_TABLE_SIZE);
+
+	rc |= iwl4965_sensitivity_write(priv, flags);
+	IWL_DEBUG_CALIB("<<return 0x%X\n", rc);
+
+	return;
+}
+
+
+/* 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.  */
+void iwl4965_chain_noise_reset(struct iwl_priv *priv)
+{
+	struct iwl_chain_noise_data *data = NULL;
+	int rc = 0;
+
+	data = &(priv->chain_noise_data);
+	if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
+		struct iwl_calibration_cmd cmd;
+
+		memset(&cmd, 0, sizeof(cmd));
+		cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD;
+		cmd.diff_gain_a = 0;
+		cmd.diff_gain_b = 0;
+		cmd.diff_gain_c = 0;
+		rc = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
+				 sizeof(cmd), &cmd);
+		msleep(4);
+		data->state = IWL_CHAIN_NOISE_ACCUMULATE;
+		IWL_DEBUG_CALIB("Run chain_noise_calibrate\n");
+	}
+	return;
+}
+
+/*
+ * Accumulate 20 beacons of signal and noise statistics for each of
+ *   3 receivers/antennas/rx-chains, then figure out:
+ * 1)  Which antennas are connected.
+ * 2)  Differential rx gain settings to balance the 3 receivers.
+ */
+static void iwl4965_noise_calibration(struct iwl_priv *priv,
+				      struct iwl_notif_statistics *stat_resp)
+{
+	struct iwl_chain_noise_data *data = NULL;
+	int rc = 0;
+
+	u32 chain_noise_a;
+	u32 chain_noise_b;
+	u32 chain_noise_c;
+	u32 chain_sig_a;
+	u32 chain_sig_b;
+	u32 chain_sig_c;
+	u32 average_sig[NUM_RX_CHAINS] = {INITIALIZATION_VALUE};
+	u32 average_noise[NUM_RX_CHAINS] = {INITIALIZATION_VALUE};
+	u32 max_average_sig;
+	u16 max_average_sig_antenna_i;
+	u32 min_average_noise = MIN_AVERAGE_NOISE_MAX_VALUE;
+	u16 min_average_noise_antenna_i = INITIALIZATION_VALUE;
+	u16 i = 0;
+	u16 chan_num = INITIALIZATION_VALUE;
+	u32 band = INITIALIZATION_VALUE;
+	u32 active_chains = 0;
+	unsigned long flags;
+	struct statistics_rx_non_phy *rx_info = &(stat_resp->rx.general);
+
+	data = &(priv->chain_noise_data);
+
+	/* Accumulate just the first 20 beacons after the first association,
+	 *   then we're done forever. */
+	if (data->state != IWL_CHAIN_NOISE_ACCUMULATE) {
+		if (data->state == IWL_CHAIN_NOISE_ALIVE)
+			IWL_DEBUG_CALIB("Wait for noise calib reset\n");
+		return;
+	}
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) {
+		IWL_DEBUG_CALIB(" << Interference data unavailable\n");
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return;
+	}
+
+	band = (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) ? 0 : 1;
+	chan_num = le16_to_cpu(priv->staging_rxon.channel);
+
+	/* Make sure we accumulate data for just the associated channel
+	 *   (even if scanning). */
+	if ((chan_num != (le32_to_cpu(stat_resp->flag) >> 16)) ||
+	    ((STATISTICS_REPLY_FLG_BAND_24G_MSK ==
+	     (stat_resp->flag & STATISTICS_REPLY_FLG_BAND_24G_MSK)) && band)) {
+		IWL_DEBUG_CALIB("Stats not from chan=%d, band=%d\n",
+				chan_num, band);
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return;
+	}
+
+	/* Accumulate beacon statistics values across 20 beacons */
+	chain_noise_a = le32_to_cpu(rx_info->beacon_silence_rssi_a) &
+				IN_BAND_FILTER;
+	chain_noise_b = le32_to_cpu(rx_info->beacon_silence_rssi_b) &
+				IN_BAND_FILTER;
+	chain_noise_c = le32_to_cpu(rx_info->beacon_silence_rssi_c) &
+				IN_BAND_FILTER;
+
+	chain_sig_a = le32_to_cpu(rx_info->beacon_rssi_a) & IN_BAND_FILTER;
+	chain_sig_b = le32_to_cpu(rx_info->beacon_rssi_b) & IN_BAND_FILTER;
+	chain_sig_c = le32_to_cpu(rx_info->beacon_rssi_c) & IN_BAND_FILTER;
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	data->beacon_count++;
+
+	data->chain_noise_a = (chain_noise_a + data->chain_noise_a);
+	data->chain_noise_b = (chain_noise_b + data->chain_noise_b);
+	data->chain_noise_c = (chain_noise_c + data->chain_noise_c);
+
+	data->chain_signal_a = (chain_sig_a + data->chain_signal_a);
+	data->chain_signal_b = (chain_sig_b + data->chain_signal_b);
+	data->chain_signal_c = (chain_sig_c + data->chain_signal_c);
+
+	IWL_DEBUG_CALIB("chan=%d, band=%d, beacon=%d\n", chan_num, band,
+			data->beacon_count);
+	IWL_DEBUG_CALIB("chain_sig: a %d b %d c %d\n",
+			chain_sig_a, chain_sig_b, chain_sig_c);
+	IWL_DEBUG_CALIB("chain_noise: a %d b %d c %d\n",
+			chain_noise_a, chain_noise_b, chain_noise_c);
+
+	/* If this is the 20th beacon, determine:
+	 * 1)  Disconnected antennas (using signal strengths)
+	 * 2)  Differential gain (using silence noise) to balance receivers */
+	if (data->beacon_count == CAL_NUM_OF_BEACONS) {
+
+		/* Analyze signal for disconnected antenna */
+		average_sig[0] = (data->chain_signal_a) / CAL_NUM_OF_BEACONS;
+		average_sig[1] = (data->chain_signal_b) / CAL_NUM_OF_BEACONS;
+		average_sig[2] = (data->chain_signal_c) / CAL_NUM_OF_BEACONS;
+
+		if (average_sig[0] >= average_sig[1]) {
+			max_average_sig = average_sig[0];
+			max_average_sig_antenna_i = 0;
+			active_chains = (1 << max_average_sig_antenna_i);
+		} else {
+			max_average_sig = average_sig[1];
+			max_average_sig_antenna_i = 1;
+			active_chains = (1 << max_average_sig_antenna_i);
+		}
+
+		if (average_sig[2] >= max_average_sig) {
+			max_average_sig = average_sig[2];
+			max_average_sig_antenna_i = 2;
+			active_chains = (1 << max_average_sig_antenna_i);
+		}
+
+		IWL_DEBUG_CALIB("average_sig: a %d b %d c %d\n",
+			     average_sig[0], average_sig[1], average_sig[2]);
+		IWL_DEBUG_CALIB("max_average_sig = %d, antenna %d\n",
+			     max_average_sig, max_average_sig_antenna_i);
+
+		/* Compare signal strengths for all 3 receivers. */
+		for (i = 0; i < NUM_RX_CHAINS; i++) {
+			if (i != max_average_sig_antenna_i) {
+				s32 rssi_delta = (max_average_sig -
+						  average_sig[i]);
+
+				/* If signal is very weak, compared with
+				 * strongest, mark it as disconnected. */
+				if (rssi_delta > MAXIMUM_ALLOWED_PATHLOSS)
+					data->disconn_array[i] = 1;
+				else
+					active_chains |= (1 << i);
+			IWL_DEBUG_CALIB("i = %d  rssiDelta = %d  "
+				     "disconn_array[i] = %d\n",
+				     i, rssi_delta, data->disconn_array[i]);
+			}
+		}
+
+		/*If both chains A & B are disconnected -
+		 * connect B and leave A as is */
+		if (data->disconn_array[CHAIN_A] &&
+		    data->disconn_array[CHAIN_B]) {
+			data->disconn_array[CHAIN_B] = 0;
+			active_chains |= (1 << CHAIN_B);
+			IWL_DEBUG_CALIB("both A & B chains are disconnected! "
+				     "W/A - declare B as connected\n");
+		}
+
+		IWL_DEBUG_CALIB("active_chains (bitwise) = 0x%x\n",
+				active_chains);
+
+		/* Save for use within RXON, TX, SCAN commands, etc. */
+		priv->valid_antenna = active_chains;
+
+		/* Analyze noise for rx balance */
+		average_noise[0] = ((data->chain_noise_a)/CAL_NUM_OF_BEACONS);
+		average_noise[1] = ((data->chain_noise_b)/CAL_NUM_OF_BEACONS);
+		average_noise[2] = ((data->chain_noise_c)/CAL_NUM_OF_BEACONS);
+
+		for (i = 0; i < NUM_RX_CHAINS; i++) {
+			if (!(data->disconn_array[i]) &&
+			   (average_noise[i] <= min_average_noise)) {
+				/* This means that chain i is active and has
+				 * lower noise values so far: */
+				min_average_noise = average_noise[i];
+				min_average_noise_antenna_i = i;
+			}
+		}
+
+		data->delta_gain_code[min_average_noise_antenna_i] = 0;
+
+		IWL_DEBUG_CALIB("average_noise: a %d b %d c %d\n",
+				average_noise[0], average_noise[1],
+				average_noise[2]);
+
+		IWL_DEBUG_CALIB("min_average_noise = %d, antenna %d\n",
+				min_average_noise, min_average_noise_antenna_i);
+
+		for (i = 0; i < NUM_RX_CHAINS; i++) {
+			s32 delta_g = 0;
+
+			if (!(data->disconn_array[i]) &&
+			    (data->delta_gain_code[i] ==
+			     CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) {
+				delta_g = average_noise[i] - min_average_noise;
+				data->delta_gain_code[i] = (u8)((delta_g *
+								    10) / 15);
+				if (CHAIN_NOISE_MAX_DELTA_GAIN_CODE <
+				   data->delta_gain_code[i])
+					data->delta_gain_code[i] =
+					  CHAIN_NOISE_MAX_DELTA_GAIN_CODE;
+
+				data->delta_gain_code[i] =
+					(data->delta_gain_code[i] | (1 << 2));
+			} else
+				data->delta_gain_code[i] = 0;
+		}
+		IWL_DEBUG_CALIB("delta_gain_codes: a %d b %d c %d\n",
+			     data->delta_gain_code[0],
+			     data->delta_gain_code[1],
+			     data->delta_gain_code[2]);
+
+		/* Differential gain gets sent to uCode only once */
+		if (!data->radio_write) {
+			struct iwl_calibration_cmd cmd;
+			data->radio_write = 1;
+
+			memset(&cmd, 0, sizeof(cmd));
+			cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD;
+			cmd.diff_gain_a = data->delta_gain_code[0];
+			cmd.diff_gain_b = data->delta_gain_code[1];
+			cmd.diff_gain_c = data->delta_gain_code[2];
+			rc = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
+					      sizeof(cmd), &cmd);
+			if (rc)
+				IWL_DEBUG_CALIB("fail sending cmd "
+					     "REPLY_PHY_CALIBRATION_CMD \n");
+
+			/* TODO we might want recalculate
+			 * rx_chain in rxon cmd */
+
+			/* Mark so we run this algo only once! */
+			data->state = IWL_CHAIN_NOISE_CALIBRATED;
+		}
+		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;
+	}
+	return;
+}
+
+static void iwl4965_sensitivity_calibration(struct iwl_priv *priv,
+					    struct iwl_notif_statistics *resp)
+{
+	int rc = 0;
+	u32 rx_enable_time;
+	u32 fa_cck;
+	u32 fa_ofdm;
+	u32 bad_plcp_cck;
+	u32 bad_plcp_ofdm;
+	u32 norm_fa_ofdm;
+	u32 norm_fa_cck;
+	struct iwl_sensitivity_data *data = NULL;
+	struct statistics_rx_non_phy *rx_info = &(resp->rx.general);
+	struct statistics_rx *statistics = &(resp->rx);
+	unsigned long flags;
+	struct statistics_general_data statis;
+
+	data = &(priv->sensitivity_data);
+
+	if (!iwl_is_associated(priv)) {
+		IWL_DEBUG_CALIB("<< - not associated\n");
+		return;
+	}
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) {
+		IWL_DEBUG_CALIB("<< invalid data.\n");
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return;
+	}
+
+	/* Extract Statistics: */
+	rx_enable_time = le32_to_cpu(rx_info->channel_load);
+	fa_cck = le32_to_cpu(statistics->cck.false_alarm_cnt);
+	fa_ofdm = le32_to_cpu(statistics->ofdm.false_alarm_cnt);
+	bad_plcp_cck = le32_to_cpu(statistics->cck.plcp_err);
+	bad_plcp_ofdm = le32_to_cpu(statistics->ofdm.plcp_err);
+
+	statis.beacon_silence_rssi_a =
+			le32_to_cpu(statistics->general.beacon_silence_rssi_a);
+	statis.beacon_silence_rssi_b =
+			le32_to_cpu(statistics->general.beacon_silence_rssi_b);
+	statis.beacon_silence_rssi_c =
+			le32_to_cpu(statistics->general.beacon_silence_rssi_c);
+	statis.beacon_energy_a =
+			le32_to_cpu(statistics->general.beacon_energy_a);
+	statis.beacon_energy_b =
+			le32_to_cpu(statistics->general.beacon_energy_b);
+	statis.beacon_energy_c =
+			le32_to_cpu(statistics->general.beacon_energy_c);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	IWL_DEBUG_CALIB("rx_enable_time = %u usecs\n", rx_enable_time);
+
+	if (!rx_enable_time) {
+		IWL_DEBUG_CALIB("<< RX Enable Time == 0! \n");
+		return;
+	}
+
+	/* These statistics increase monotonically, and do not reset
+	 *   at each beacon.  Calculate difference from last value, or just
+	 *   use the new statistics value if it has reset or wrapped around. */
+	if (data->last_bad_plcp_cnt_cck > bad_plcp_cck)
+		data->last_bad_plcp_cnt_cck = bad_plcp_cck;
+	else {
+		bad_plcp_cck -= data->last_bad_plcp_cnt_cck;
+		data->last_bad_plcp_cnt_cck += bad_plcp_cck;
+	}
+
+	if (data->last_bad_plcp_cnt_ofdm > bad_plcp_ofdm)
+		data->last_bad_plcp_cnt_ofdm = bad_plcp_ofdm;
+	else {
+		bad_plcp_ofdm -= data->last_bad_plcp_cnt_ofdm;
+		data->last_bad_plcp_cnt_ofdm += bad_plcp_ofdm;
+	}
+
+	if (data->last_fa_cnt_ofdm > fa_ofdm)
+		data->last_fa_cnt_ofdm = fa_ofdm;
+	else {
+		fa_ofdm -= data->last_fa_cnt_ofdm;
+		data->last_fa_cnt_ofdm += fa_ofdm;
+	}
+
+	if (data->last_fa_cnt_cck > fa_cck)
+		data->last_fa_cnt_cck = fa_cck;
+	else {
+		fa_cck -= data->last_fa_cnt_cck;
+		data->last_fa_cnt_cck += fa_cck;
+	}
+
+	/* Total aborted signal locks */
+	norm_fa_ofdm = fa_ofdm + bad_plcp_ofdm;
+	norm_fa_cck = fa_cck + bad_plcp_cck;
+
+	IWL_DEBUG_CALIB("cck: fa %u badp %u  ofdm: fa %u badp %u\n", fa_cck,
+			bad_plcp_cck, fa_ofdm, bad_plcp_ofdm);
+
+	iwl4965_sens_auto_corr_ofdm(priv, norm_fa_ofdm, rx_enable_time);
+	iwl4965_sens_energy_cck(priv, norm_fa_cck, rx_enable_time, &statis);
+	rc |= iwl4965_sensitivity_write(priv, CMD_ASYNC);
+
+	return;
+}
+
+static void iwl4965_bg_sensitivity_work(struct work_struct *work)
+{
+	struct iwl_priv *priv = container_of(work, struct iwl_priv,
+			sensitivity_work);
+
+	mutex_lock(&priv->mutex);
+
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
+	    test_bit(STATUS_SCANNING, &priv->status)) {
+		mutex_unlock(&priv->mutex);
+		return;
+	}
+
+	if (priv->start_calib) {
+		iwl4965_noise_calibration(priv, &priv->statistics);
+
+		if (priv->sensitivity_data.state ==
+					IWL_SENS_CALIB_NEED_REINIT) {
+			iwl4965_init_sensitivity(priv, CMD_ASYNC, 0);
+			priv->sensitivity_data.state = IWL_SENS_CALIB_ALLOWED;
+		} else
+			iwl4965_sensitivity_calibration(priv,
+					&priv->statistics);
+	}
+
+	mutex_unlock(&priv->mutex);
+	return;
+}
+#endif /*CONFIG_IWLWIFI_SENSITIVITY*/
+
+static void iwl4965_bg_txpower_work(struct work_struct *work)
+{
+	struct iwl_priv *priv = container_of(work, struct iwl_priv,
+			txpower_work);
+
+	/* If a scan happened to start before we got here
+	 * then just return; the statistics notification will
+	 * kick off another scheduled work to compensate for
+	 * any temperature delta we missed here. */
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
+	    test_bit(STATUS_SCANNING, &priv->status))
+		return;
+
+	mutex_lock(&priv->mutex);
+
+	/* Regardless of if we are assocaited, we must reconfigure the
+	 * TX power since frames can be sent on non-radar channels while
+	 * not associated */
+	iwl_hw_reg_send_txpower(priv);
+
+	/* Update last_temperature to keep is_calib_needed from running
+	 * when it isn't needed... */
+	priv->last_temperature = priv->temperature;
+
+	mutex_unlock(&priv->mutex);
+}
+
+/*
+ * Acquire priv->lock before calling this function !
+ */
+static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index)
+{
+	iwl_write_restricted(priv, HBUS_TARG_WRPTR,
+			     (index & 0xff) | (txq_id << 8));
+	iwl_write_restricted_reg(priv, SCD_QUEUE_RDPTR(txq_id), index);
+}
+
+/*
+ * Acquire priv->lock before calling this function !
+ */
+static void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
+					struct iwl_tx_queue *txq,
+					int tx_fifo_id, int scd_retry)
+{
+	int txq_id = txq->q.id;
+	int active = test_bit(txq_id, &priv->txq_ctx_active_msk)?1:0;
+
+	iwl_write_restricted_reg(priv, SCD_QUEUE_STATUS_BITS(txq_id),
+				 (active << SCD_QUEUE_STTS_REG_POS_ACTIVE) |
+				 (tx_fifo_id << SCD_QUEUE_STTS_REG_POS_TXF) |
+				 (scd_retry << SCD_QUEUE_STTS_REG_POS_WSL) |
+				 (scd_retry << SCD_QUEUE_STTS_REG_POS_SCD_ACK) |
+				 SCD_QUEUE_STTS_REG_MSK);
+
+	txq->sched_retry = scd_retry;
+
+	IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n",
+		       active ? "Activete" : "Deactivate",
+		       scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
+}
+
+static const u16 default_queue_to_tx_fifo[] = {
+	IWL_TX_FIFO_AC3,
+	IWL_TX_FIFO_AC2,
+	IWL_TX_FIFO_AC1,
+	IWL_TX_FIFO_AC0,
+	IWL_CMD_FIFO_NUM,
+	IWL_TX_FIFO_HCCA_1,
+	IWL_TX_FIFO_HCCA_2
+};
+
+static inline void iwl4965_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
+{
+	set_bit(txq_id, &priv->txq_ctx_active_msk);
+}
+
+static inline void iwl4965_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
+{
+	clear_bit(txq_id, &priv->txq_ctx_active_msk);
+}
+
+int iwl4965_alive_notify(struct iwl_priv *priv)
+{
+	u32 a;
+	int i = 0;
+	unsigned long flags;
+	int rc;
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+	memset(&(priv->sensitivity_data), 0,
+	       sizeof(struct iwl_sensitivity_data));
+	memset(&(priv->chain_noise_data), 0,
+	       sizeof(struct iwl_chain_noise_data));
+	for (i = 0; i < NUM_RX_CHAINS; i++)
+		priv->chain_noise_data.delta_gain_code[i] =
+				CHAIN_NOISE_DELTA_GAIN_INIT_VAL;
+#endif /* CONFIG_IWLWIFI_SENSITIVITY*/
+	rc = iwl_grab_restricted_access(priv);
+	if (rc) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return rc;
+	}
+
+	priv->scd_base_addr = iwl_read_restricted_reg(priv, SCD_SRAM_BASE_ADDR);
+	a = priv->scd_base_addr + SCD_CONTEXT_DATA_OFFSET;
+	for (; a < priv->scd_base_addr + SCD_TX_STTS_BITMAP_OFFSET; a += 4)
+		iwl_write_restricted_mem(priv, a, 0);
+	for (; a < priv->scd_base_addr + SCD_TRANSLATE_TBL_OFFSET; a += 4)
+		iwl_write_restricted_mem(priv, a, 0);
+	for (; a < sizeof(u16) * priv->hw_setting.max_txq_num; a += 4)
+		iwl_write_restricted_mem(priv, a, 0);
+
+	iwl_write_restricted_reg(priv, SCD_DRAM_BASE_ADDR,
+		(priv->hw_setting.shared_phys +
+		 offsetof(struct iwl_shared, queues_byte_cnt_tbls)) >> 10);
+	iwl_write_restricted_reg(priv, SCD_QUEUECHAIN_SEL, 0);
+
+	/* initiate the queues */
+	for (i = 0; i < priv->hw_setting.max_txq_num; i++) {
+		iwl_write_restricted_reg(priv, SCD_QUEUE_RDPTR(i), 0);
+		iwl_write_restricted(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
+		iwl_write_restricted_mem(priv, priv->scd_base_addr +
+					SCD_CONTEXT_QUEUE_OFFSET(i),
+					(SCD_WIN_SIZE <<
+					SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
+					SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
+		iwl_write_restricted_mem(priv, priv->scd_base_addr +
+					SCD_CONTEXT_QUEUE_OFFSET(i) +
+					sizeof(u32),
+					(SCD_FRAME_LIMIT <<
+					SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
+					SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
+
+	}
+	iwl_write_restricted_reg(priv, SCD_INTERRUPT_MASK,
+				 (1 << priv->hw_setting.max_txq_num) - 1);
+
+	iwl_write_restricted_reg(priv, SCD_TXFACT,
+				 SCD_TXFACT_REG_TXFIFO_MASK(0, 7));
+
+	iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
+	/* map qos queues to fifos one-to-one */
+	for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) {
+		int ac = default_queue_to_tx_fifo[i];
+		iwl4965_txq_ctx_activate(priv, i);
+		iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
+	}
+
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return 0;
+}
+
+int iwl_hw_set_hw_setting(struct iwl_priv *priv)
+{
+	priv->hw_setting.shared_virt =
+	    pci_alloc_consistent(priv->pci_dev,
+				 sizeof(struct iwl_shared),
+				 &priv->hw_setting.shared_phys);
+
+	if (!priv->hw_setting.shared_virt)
+		return -1;
+
+	memset(priv->hw_setting.shared_virt, 0, sizeof(struct iwl_shared));
+
+	priv->hw_setting.max_txq_num = iwl_param_queues_num;
+	priv->hw_setting.ac_queue_count = AC_NUM;
+
+	priv->hw_setting.cck_flag = RATE_MCS_CCK_MSK;
+	priv->hw_setting.tx_cmd_len = sizeof(struct iwl_tx_cmd);
+	priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE;
+	priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG;
+
+	priv->hw_setting.max_stations = IWL4965_STATION_COUNT;
+	priv->hw_setting.bcast_sta_id = IWL4965_BROADCAST_ID;
+	return 0;
+}
+
+/**
+ * iwl_hw_txq_ctx_free - Free TXQ Context
+ *
+ * Destroy all TX DMA queues and structures
+ */
+void iwl_hw_txq_ctx_free(struct iwl_priv *priv)
+{
+	int txq_id;
+
+	/* Tx queues */
+	for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++)
+		iwl_tx_queue_free(priv, &priv->txq[txq_id]);
+
+	iwl4965_kw_free(priv);
+}
+
+/**
+ * iwl_hw_txq_free_tfd -  Free one TFD, those at index [txq->q.last_used]
+ *
+ * Does NOT advance any indexes
+ */
+int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+	struct iwl_tfd_frame *bd_tmp = (struct iwl_tfd_frame *)&txq->bd[0];
+	struct iwl_tfd_frame *bd = &bd_tmp[txq->q.last_used];
+	struct pci_dev *dev = priv->pci_dev;
+	int i;
+	int counter = 0;
+	int index, is_odd;
+
+	/* classify bd */
+	if (txq->q.id == IWL_CMD_QUEUE_NUM)
+		/* nothing to cleanup after for host commands */
+		return 0;
+
+	/* sanity check */
+	counter = IWL_GET_BITS(*bd, num_tbs);
+	if (counter > MAX_NUM_OF_TBS) {
+		IWL_ERROR("Too many chunks: %i\n", counter);
+		/* @todo issue fatal error, it is quite serious situation */
+		return 0;
+	}
+
+	/* unmap chunks if any */
+
+	for (i = 0; i < counter; i++) {
+		index = i / 2;
+		is_odd = i & 0x1;
+
+		if (is_odd)
+			pci_unmap_single(
+				dev,
+				IWL_GET_BITS(bd->pa[index], tb2_addr_lo16) |
+				(IWL_GET_BITS(bd->pa[index],
+					      tb2_addr_hi20) << 16),
+				IWL_GET_BITS(bd->pa[index], tb2_len),
+				PCI_DMA_TODEVICE);
+
+		else if (i > 0)
+			pci_unmap_single(dev,
+					 le32_to_cpu(bd->pa[index].tb1_addr),
+					 IWL_GET_BITS(bd->pa[index], tb1_len),
+					 PCI_DMA_TODEVICE);
+
+		if (txq->txb[txq->q.last_used].skb[i]) {
+			struct sk_buff *skb = txq->txb[txq->q.last_used].skb[i];
+
+			dev_kfree_skb(skb);
+			txq->txb[txq->q.last_used].skb[i] = NULL;
+		}
+	}
+	return 0;
+}
+
+int iwl_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
+{
+	IWL_ERROR("TODO: Implement iwl_hw_reg_set_txpower!\n");
+	return -EINVAL;
+}
+
+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;
+}
+
+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 const struct iwl_channel_info *
+iwl4965_get_channel_txpower_info(struct iwl_priv *priv, u8 phymode, u16 channel)
+{
+	const struct iwl_channel_info *ch_info;
+
+	ch_info = iwl_get_channel_info(priv, phymode, channel);
+
+	if (!is_channel_valid(ch_info))
+		return NULL;
+
+	return ch_info;
+}
+
+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;
+
+	IWL_ERROR("Can't find txatten group for channel %d.\n", channel);
+	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->eeprom.calib_info.band_info[b].ch_from == 0)
+			continue;
+
+		if ((channel >= priv->eeprom.calib_info.band_info[b].ch_from)
+		    && (channel <= priv->eeprom.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;
+	}
+}
+
+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_ERROR("Tx Power can not find channel %d ", channel);
+		return -1;
+	}
+
+	ch_i1 = priv->eeprom.calib_info.band_info[s].ch1.ch_num;
+	ch_i2 = priv->eeprom.calib_info.band_info[s].ch2.ch_num;
+	chan_info->ch_num = (u8) channel;
+
+	IWL_DEBUG_TXPOWER("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->eeprom.calib_info.band_info[s].ch1.
+			       measurements[c][m]);
+			m2 = &(priv->eeprom.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
+			    ("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
+			    ("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
+			    ("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
+			    ("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 iwl_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_fat, u8 ctrl_chan_high,
+				    struct iwl_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;
+
+	/* Sanity check requested level (dBm) */
+	if (priv->user_txpower_limit < IWL_TX_POWER_TARGET_POWER_MIN) {
+		IWL_WARNING("Requested user TXPOWER %d below limit.\n",
+			    priv->user_txpower_limit);
+		return -EINVAL;
+	}
+	if (priv->user_txpower_limit > IWL_TX_POWER_TARGET_POWER_MAX) {
+		IWL_WARNING("Requested user TXPOWER %d above limit.\n",
+			    priv->user_txpower_limit);
+		return -EINVAL;
+	}
+
+	/* user_txpower_limit is in dBm, convert to half-dBm (half-dB units
+	 *   are used for indexing into txpower table) */
+	user_target_power = 2 * priv->user_txpower_limit;
+
+	/* Get current (RXON) channel, band, width */
+	ch_info =
+		iwl4965_get_channel_txpower_info(priv, priv->phymode, channel);
+
+	IWL_DEBUG_TXPOWER("chan %d band %d is_fat %d\n", channel, band,
+			  is_fat);
+
+	if (!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)
+		return -EINVAL;
+
+	IWL_DEBUG_TXPOWER("channel %d belongs to txatten group %d\n",
+			  channel, txatten_grp);
+
+	if (is_fat) {
+		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->eeprom.calib_info.saturation_power24;
+	else
+		saturation_power = priv->eeprom.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_fat)
+		reg_limit = ch_info->fat_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 = priv->eeprom.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("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("chain = %d\n", c);
+		IWL_DEBUG_TXPOWER("fctry tmp %d, "
+				  "curr tmp %d, comp %d steps\n",
+				  factory_temp, current_temp,
+				  temperature_comp[c]);
+
+		IWL_DEBUG_TXPOWER("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 iwl_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("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("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_WARNING("txpower index %d > 107\n",
+					    power_index);
+				power_index = 107;
+			}
+			if (power_index < 0) {
+				IWL_WARNING("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("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;
+}
+
+/**
+ * iwl_hw_reg_send_txpower - Configure the TXPOWER level user limit
+ *
+ * Uses the active RXON for channel, band, and characteristics (fat, high)
+ * The power limit is taken from priv->user_txpower_limit.
+ */
+int iwl_hw_reg_send_txpower(struct iwl_priv *priv)
+{
+	struct iwl_txpowertable_cmd cmd = { 0 };
+	int rc = 0;
+	u8 band = 0;
+	u8 is_fat = 0;
+	u8 ctrl_chan_high = 0;
+
+	if (test_bit(STATUS_SCANNING, &priv->status)) {
+		/* If this gets hit a lot, switch it to a BUG() and catch
+		 * the stack trace to find out who is calling this during
+		 * a scan. */
+		IWL_WARNING("TX Power requested while scanning!\n");
+		return -EAGAIN;
+	}
+
+	band = ((priv->phymode == MODE_IEEE80211B) ||
+		(priv->phymode == MODE_IEEE80211G));
+
+	is_fat =  is_fat_channel(priv->active_rxon.flags);
+
+	if (is_fat &&
+	    (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
+		ctrl_chan_high = 1;
+
+	cmd.band = band;
+	cmd.channel = priv->active_rxon.channel;
+
+	rc = iwl4965_fill_txpower_tbl(priv, band,
+				le16_to_cpu(priv->active_rxon.channel),
+				is_fat, ctrl_chan_high, &cmd.tx_power);
+	if (rc)
+		return rc;
+
+	rc = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
+	return rc;
+}
+
+int iwl_hw_channel_switch(struct iwl_priv *priv, u16 channel)
+{
+	int rc;
+	u8 band = 0;
+	u8 is_fat = 0;
+	u8 ctrl_chan_high = 0;
+	struct iwl_channel_switch_cmd cmd = { 0 };
+	const struct iwl_channel_info *ch_info;
+
+	band = ((priv->phymode == MODE_IEEE80211B) ||
+		(priv->phymode == MODE_IEEE80211G));
+
+	ch_info = iwl_get_channel_info(priv, priv->phymode, channel);
+
+	is_fat = is_fat_channel(priv->staging_rxon.flags);
+
+	if (is_fat &&
+	    (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
+		ctrl_chan_high = 1;
+
+	cmd.band = band;
+	cmd.expect_beacon = 0;
+	cmd.channel = cpu_to_le16(channel);
+	cmd.rxon_flags = priv->active_rxon.flags;
+	cmd.rxon_filter_flags = priv->active_rxon.filter_flags;
+	cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
+	if (ch_info)
+		cmd.expect_beacon = is_channel_radar(ch_info);
+	else
+		cmd.expect_beacon = 1;
+
+	rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_fat,
+				      ctrl_chan_high, &cmd.tx_power);
+	if (rc) {
+		IWL_DEBUG_11H("error:%d  fill txpower_tbl\n", rc);
+		return rc;
+	}
+
+	rc = iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
+	return rc;
+}
+
+#define RTS_HCCA_RETRY_LIMIT		3
+#define RTS_DFAULT_RETRY_LIMIT		60
+
+void iwl_hw_build_tx_cmd_rate(struct iwl_priv *priv,
+			      struct iwl_cmd *cmd,
+			      struct ieee80211_tx_control *ctrl,
+			      struct ieee80211_hdr *hdr, int sta_id,
+			      int is_hcca)
+{
+	u8 rate;
+	u8 rts_retry_limit = 0;
+	u8 data_retry_limit = 0;
+	__le32 tx_flags;
+	u16 fc = le16_to_cpu(hdr->frame_control);
+
+	tx_flags = cmd->cmd.tx.tx_flags;
+
+	rate = iwl_rates[ctrl->tx_rate].plcp;
+
+	rts_retry_limit = (is_hcca) ?
+	    RTS_HCCA_RETRY_LIMIT : RTS_DFAULT_RETRY_LIMIT;
+
+	if (ieee80211_is_probe_response(fc)) {
+		data_retry_limit = 3;
+		if (data_retry_limit < rts_retry_limit)
+			rts_retry_limit = data_retry_limit;
+	} else
+		data_retry_limit = IWL_DEFAULT_TX_RETRY;
+
+	if (priv->data_retry_limit != -1)
+		data_retry_limit = priv->data_retry_limit;
+
+	if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
+		switch (fc & IEEE80211_FCTL_STYPE) {
+		case IEEE80211_STYPE_AUTH:
+		case IEEE80211_STYPE_DEAUTH:
+		case IEEE80211_STYPE_ASSOC_REQ:
+		case IEEE80211_STYPE_REASSOC_REQ:
+			if (tx_flags & TX_CMD_FLG_RTS_MSK) {
+				tx_flags &= ~TX_CMD_FLG_RTS_MSK;
+				tx_flags |= TX_CMD_FLG_CTS_MSK;
+			}
+			break;
+		default:
+			break;
+		}
+	}
+
+	cmd->cmd.tx.rts_retry_limit = rts_retry_limit;
+	cmd->cmd.tx.data_retry_limit = data_retry_limit;
+	cmd->cmd.tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate, 0);
+	cmd->cmd.tx.tx_flags = tx_flags;
+}
+
+int iwl_hw_get_rx_read(struct iwl_priv *priv)
+{
+	struct iwl_shared *shared_data = priv->hw_setting.shared_virt;
+
+	return IWL_GET_BITS(*shared_data, rb_closed_stts_rb_num);
+}
+
+int iwl_hw_get_temperature(struct iwl_priv *priv)
+{
+	return priv->temperature;
+}
+
+unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
+			  struct iwl_frame *frame, u8 rate)
+{
+	struct iwl_tx_beacon_cmd *tx_beacon_cmd;
+	unsigned int frame_size;
+
+	tx_beacon_cmd = &frame->u.beacon;
+	memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
+
+	tx_beacon_cmd->tx.sta_id = IWL4965_BROADCAST_ID;
+	tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
+
+	frame_size = iwl_fill_beacon_frame(priv,
+				tx_beacon_cmd->frame,
+				BROADCAST_ADDR,
+				sizeof(frame->u) - sizeof(*tx_beacon_cmd));
+
+	BUG_ON(frame_size > MAX_MPDU_SIZE);
+	tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
+
+	if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
+		tx_beacon_cmd->tx.rate_n_flags =
+			iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
+	else
+		tx_beacon_cmd->tx.rate_n_flags =
+			iwl_hw_set_rate_n_flags(rate, 0);
+
+	tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
+				TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK);
+	return (sizeof(*tx_beacon_cmd) + frame_size);
+}
+
+int iwl_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+	int rc;
+	unsigned long flags;
+	int txq_id = txq->q.id;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	rc = iwl_grab_restricted_access(priv);
+	if (rc) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return rc;
+	}
+
+	iwl_write_restricted(priv, FH_MEM_CBBC_QUEUE(txq_id),
+			     txq->q.dma_addr >> 8);
+	iwl_write_restricted(
+		priv, IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id),
+		IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
+		IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL);
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return 0;
+}
+
+static inline u8 iwl4965_get_dma_hi_address(dma_addr_t addr)
+{
+	return sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0;
+}
+
+int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
+				 dma_addr_t addr, u16 len)
+{
+	int index, is_odd;
+	struct iwl_tfd_frame *tfd = ptr;
+	u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs);
+
+	if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) {
+		IWL_ERROR("Error can not send more than %d chunks\n",
+			  MAX_NUM_OF_TBS);
+		return -EINVAL;
+	}
+
+	index = num_tbs / 2;
+	is_odd = num_tbs & 0x1;
+
+	if (!is_odd) {
+		tfd->pa[index].tb1_addr = cpu_to_le32(addr);
+		IWL_SET_BITS(tfd->pa[index], tb1_addr_hi,
+			     iwl4965_get_dma_hi_address(addr));
+		IWL_SET_BITS(tfd->pa[index], tb1_len, len);
+	} else {
+		IWL_SET_BITS(tfd->pa[index], tb2_addr_lo16,
+			     (u32) (addr & 0xffff));
+		IWL_SET_BITS(tfd->pa[index], tb2_addr_hi20, addr >> 16);
+		IWL_SET_BITS(tfd->pa[index], tb2_len, len);
+	}
+
+	IWL_SET_BITS(*tfd, num_tbs, num_tbs + 1);
+
+	return 0;
+}
+
+void iwl_hw_card_show_info(struct iwl_priv *priv)
+{
+	u16 hw_version = priv->eeprom.board_revision_4965;
+
+	IWL_DEBUG_INFO("4965ABGN HW Version %u.%u.%u\n",
+		       ((hw_version >> 8) & 0x0F),
+		       ((hw_version >> 8) >> 4), (hw_version & 0x00FF));
+
+	IWL_DEBUG_INFO("4965ABGN PBA Number %.16s\n",
+		       priv->eeprom.board_pba_number_4965);
+}
+
+#define IWL_TX_CRC_SIZE		4
+#define IWL_TX_DELIMITER_SIZE	4
+
+int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv *priv,
+				   struct iwl_tx_queue *txq, u16 byte_cnt)
+{
+	int len;
+	int txq_id = txq->q.id;
+	struct iwl_shared *shared_data = priv->hw_setting.shared_virt;
+
+	if (txq->need_update == 0)
+		return 0;
+
+	len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
+
+	IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
+		       tfd_offset[txq->q.first_empty], byte_cnt, len);
+
+	if (txq->q.first_empty < IWL4965_MAX_WIN_SIZE)
+		IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
+			tfd_offset[IWL4965_QUEUE_SIZE + txq->q.first_empty],
+			byte_cnt, len);
+
+	return 0;
+}
+
+/* Set up Rx receiver/antenna/chain usage in "staging" RXON image.
+ * This should not be used for scan command ... it puts data in wrong place.  */
+void iwl4965_set_rxon_chain(struct iwl_priv *priv)
+{
+	u8 is_single = is_single_stream(priv);
+	u8 idle_state, rx_state;
+
+	priv->staging_rxon.rx_chain = 0;
+	rx_state = idle_state = 3;
+
+	/* Tell uCode which antennas are actually connected.
+	 * Before first association, we assume all antennas are connected.
+	 * Just after first association, iwl4965_noise_calibration()
+	 *    checks which antennas actually *are* connected. */
+	priv->staging_rxon.rx_chain |=
+	    cpu_to_le16(priv->valid_antenna << RXON_RX_CHAIN_VALID_POS);
+
+	/* How many receivers should we use? */
+	iwl4965_get_rx_chain_counter(priv, &idle_state, &rx_state);
+	priv->staging_rxon.rx_chain |=
+		cpu_to_le16(rx_state << RXON_RX_CHAIN_MIMO_CNT_POS);
+	priv->staging_rxon.rx_chain |=
+		cpu_to_le16(idle_state << RXON_RX_CHAIN_CNT_POS);
+
+	if (!is_single && (rx_state >= 2) &&
+	    !test_bit(STATUS_POWER_PMI, &priv->status))
+		priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
+	else
+		priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
+
+	IWL_DEBUG_ASSOC("rx chain %X\n", priv->staging_rxon.rx_chain);
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+/*
+	get the traffic load value for tid
+*/
+static u32 iwl4965_tl_get_load(struct iwl_priv *priv, u8 tid)
+{
+	u32 load = 0;
+	u32 current_time = jiffies_to_msecs(jiffies);
+	u32 time_diff;
+	s32 index;
+	unsigned long flags;
+	struct iwl_traffic_load *tid_ptr = NULL;
+
+	if (tid >= TID_MAX_LOAD_COUNT)
+		return 0;
+
+	tid_ptr = &(priv->lq_mngr.agg_ctrl.traffic_load[tid]);
+
+	current_time -= current_time % TID_ROUND_VALUE;
+
+	spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+	if (!(tid_ptr->queue_count))
+		goto out;
+
+	time_diff = TIME_WRAP_AROUND(tid_ptr->time_stamp, current_time);
+	index = time_diff / TID_QUEUE_CELL_SPACING;
+
+	if (index >= TID_QUEUE_MAX_SIZE) {
+		u32 oldest_time = current_time - TID_MAX_TIME_DIFF;
+
+		while (tid_ptr->queue_count &&
+		       (tid_ptr->time_stamp < oldest_time)) {
+			tid_ptr->total -= tid_ptr->packet_count[tid_ptr->head];
+			tid_ptr->packet_count[tid_ptr->head] = 0;
+			tid_ptr->time_stamp += TID_QUEUE_CELL_SPACING;
+			tid_ptr->queue_count--;
+			tid_ptr->head++;
+			if (tid_ptr->head >= TID_QUEUE_MAX_SIZE)
+				tid_ptr->head = 0;
+		}
+	}
+	load = tid_ptr->total;
+
+ out:
+	spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+	return load;
+}
+
+/*
+	increment traffic load value for tid and also remove
+	any old values if passed the certian time period
+*/
+static void iwl4965_tl_add_packet(struct iwl_priv *priv, u8 tid)
+{
+	u32 current_time = jiffies_to_msecs(jiffies);
+	u32 time_diff;
+	s32 index;
+	unsigned long flags;
+	struct iwl_traffic_load *tid_ptr = NULL;
+
+	if (tid >= TID_MAX_LOAD_COUNT)
+		return;
+
+	tid_ptr = &(priv->lq_mngr.agg_ctrl.traffic_load[tid]);
+
+	current_time -= current_time % TID_ROUND_VALUE;
+
+	spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+	if (!(tid_ptr->queue_count)) {
+		tid_ptr->total = 1;
+		tid_ptr->time_stamp = current_time;
+		tid_ptr->queue_count = 1;
+		tid_ptr->head = 0;
+		tid_ptr->packet_count[0] = 1;
+		goto out;
+	}
+
+	time_diff = TIME_WRAP_AROUND(tid_ptr->time_stamp, current_time);
+	index = time_diff / TID_QUEUE_CELL_SPACING;
+
+	if (index >= TID_QUEUE_MAX_SIZE) {
+		u32 oldest_time = current_time - TID_MAX_TIME_DIFF;
+
+		while (tid_ptr->queue_count &&
+		       (tid_ptr->time_stamp < oldest_time)) {
+			tid_ptr->total -= tid_ptr->packet_count[tid_ptr->head];
+			tid_ptr->packet_count[tid_ptr->head] = 0;
+			tid_ptr->time_stamp += TID_QUEUE_CELL_SPACING;
+			tid_ptr->queue_count--;
+			tid_ptr->head++;
+			if (tid_ptr->head >= TID_QUEUE_MAX_SIZE)
+				tid_ptr->head = 0;
+		}
+	}
+
+	index = (tid_ptr->head + index) % TID_QUEUE_MAX_SIZE;
+	tid_ptr->packet_count[index] = tid_ptr->packet_count[index] + 1;
+	tid_ptr->total = tid_ptr->total + 1;
+
+	if ((index + 1) > tid_ptr->queue_count)
+		tid_ptr->queue_count = index + 1;
+ out:
+	spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+
+}
+
+#define MMAC_SCHED_MAX_NUMBER_OF_HT_BACK_FLOWS   7
+enum HT_STATUS {
+	BA_STATUS_FAILURE = 0,
+	BA_STATUS_INITIATOR_DELBA,
+	BA_STATUS_RECIPIENT_DELBA,
+	BA_STATUS_RENEW_ADDBA_REQUEST,
+	BA_STATUS_ACTIVE,
+};
+
+static u8 iwl4964_tl_ba_avail(struct iwl_priv *priv)
+{
+	int i;
+	struct iwl_lq_mngr *lq;
+	u8 count = 0;
+	u16 msk;
+
+	lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+	for (i = 0; i < TID_MAX_LOAD_COUNT ; i++) {
+		msk = 1 << i;
+		if ((lq->agg_ctrl.granted_ba & msk) ||
+		    (lq->agg_ctrl.wait_for_agg_status & msk))
+			count++;
+	}
+
+	if (count < MMAC_SCHED_MAX_NUMBER_OF_HT_BACK_FLOWS)
+		return 1;
+
+	return 0;
+}
+
+static void iwl4965_ba_status(struct iwl_priv *priv,
+			      u8 tid, enum HT_STATUS status);
+
+static int iwl4965_perform_addba(struct iwl_priv *priv, u8 tid, u32 length,
+				 u32 ba_timeout)
+{
+	int rc;
+
+	rc = ieee80211_start_BA_session(priv->hw, priv->bssid, tid);
+	if (rc)
+		iwl4965_ba_status(priv, tid, BA_STATUS_FAILURE);
+
+	return rc;
+}
+
+static int iwl4965_perform_delba(struct iwl_priv *priv, u8 tid)
+{
+	int rc;
+
+	rc = ieee80211_stop_BA_session(priv->hw, priv->bssid, tid);
+	if (rc)
+		iwl4965_ba_status(priv, tid, BA_STATUS_FAILURE);
+
+	return rc;
+}
+
+static void iwl4965_turn_on_agg_for_tid(struct iwl_priv *priv,
+					struct iwl_lq_mngr *lq,
+					u8 auto_agg, u8 tid)
+{
+	u32 tid_msk = (1 << tid);
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+/*
+	if ((auto_agg) && (!lq->enable_counter)){
+		lq->agg_ctrl.next_retry = 0;
+		lq->agg_ctrl.tid_retry = 0;
+		spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+		return;
+	}
+*/
+	if (!(lq->agg_ctrl.granted_ba & tid_msk) &&
+	    (lq->agg_ctrl.requested_ba & tid_msk)) {
+		u8 available_queues;
+		u32 load;
+
+		spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+		available_queues = iwl4964_tl_ba_avail(priv);
+		load = iwl4965_tl_get_load(priv, tid);
+
+		spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+		if (!available_queues) {
+			if (auto_agg)
+				lq->agg_ctrl.tid_retry |= tid_msk;
+			else {
+				lq->agg_ctrl.requested_ba &= ~tid_msk;
+				lq->agg_ctrl.wait_for_agg_status &= ~tid_msk;
+			}
+		} else if ((auto_agg) &&
+			   ((load <= lq->agg_ctrl.tid_traffic_load_threshold) ||
+			    ((lq->agg_ctrl.wait_for_agg_status & tid_msk))))
+			lq->agg_ctrl.tid_retry |= tid_msk;
+		else {
+			lq->agg_ctrl.wait_for_agg_status |= tid_msk;
+			spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+			iwl4965_perform_addba(priv, tid, 0x40,
+					      lq->agg_ctrl.ba_timeout);
+			spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+		}
+	}
+	spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+}
+
+static void iwl4965_turn_on_agg(struct iwl_priv *priv, u8 tid)
+{
+	struct iwl_lq_mngr *lq;
+	unsigned long flags;
+
+	lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+
+	if ((tid < TID_MAX_LOAD_COUNT))
+		iwl4965_turn_on_agg_for_tid(priv, lq, lq->agg_ctrl.auto_agg,
+					    tid);
+	else if (tid == TID_ALL_SPECIFIED) {
+		if (lq->agg_ctrl.requested_ba) {
+			for (tid = 0; tid < TID_MAX_LOAD_COUNT; tid++)
+				iwl4965_turn_on_agg_for_tid(priv, lq,
+					lq->agg_ctrl.auto_agg, tid);
+		} else {
+			spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+			lq->agg_ctrl.tid_retry = 0;
+			lq->agg_ctrl.next_retry = 0;
+			spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+		}
+	}
+
+}
+
+void iwl4965_turn_off_agg(struct iwl_priv *priv, u8 tid)
+{
+	u32 tid_msk;
+	struct iwl_lq_mngr *lq;
+	unsigned long flags;
+
+	lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+
+	if ((tid < TID_MAX_LOAD_COUNT)) {
+		tid_msk = 1 << tid;
+		spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+		lq->agg_ctrl.wait_for_agg_status |= tid_msk;
+		lq->agg_ctrl.requested_ba &= ~tid_msk;
+		spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+		iwl4965_perform_delba(priv, tid);
+	} else if (tid == TID_ALL_SPECIFIED) {
+		spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+		for (tid = 0; tid < TID_MAX_LOAD_COUNT; tid++) {
+			tid_msk = 1 << tid;
+			lq->agg_ctrl.wait_for_agg_status |= tid_msk;
+			spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+			iwl4965_perform_delba(priv, tid);
+			spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+		}
+		lq->agg_ctrl.requested_ba = 0;
+		spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+	}
+}
+
+static void iwl4965_ba_status(struct iwl_priv *priv,
+				u8 tid, enum HT_STATUS status)
+{
+	struct iwl_lq_mngr *lq;
+	u32 tid_msk = (1 << tid);
+	unsigned long flags;
+
+	lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+
+	if ((tid >= TID_MAX_LOAD_COUNT))
+		goto out;
+
+	spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+	switch (status) {
+	case BA_STATUS_ACTIVE:
+		if (!(lq->agg_ctrl.granted_ba & tid_msk))
+			lq->agg_ctrl.granted_ba |= tid_msk;
+		break;
+	default:
+		if ((lq->agg_ctrl.granted_ba & tid_msk))
+			lq->agg_ctrl.granted_ba &= ~tid_msk;
+		break;
+	}
+
+	lq->agg_ctrl.wait_for_agg_status &= ~tid_msk;
+	if (status != BA_STATUS_ACTIVE) {
+		if (lq->agg_ctrl.auto_agg) {
+			lq->agg_ctrl.tid_retry |= tid_msk;
+			lq->agg_ctrl.next_retry =
+			    jiffies + msecs_to_jiffies(500);
+		} else
+			lq->agg_ctrl.requested_ba &= ~tid_msk;
+	}
+	spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ out:
+	return;
+}
+
+static void iwl4965_bg_agg_work(struct work_struct *work)
+{
+	struct iwl_priv *priv = container_of(work, struct iwl_priv,
+					agg_work);
+
+	u32 tid;
+	u32 retry_tid;
+	u32 tid_msk;
+	unsigned long flags;
+	struct iwl_lq_mngr *lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+
+	spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+	retry_tid = lq->agg_ctrl.tid_retry;
+	lq->agg_ctrl.tid_retry = 0;
+	spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+
+	if (retry_tid == TID_ALL_SPECIFIED)
+		iwl4965_turn_on_agg(priv, TID_ALL_SPECIFIED);
+	else {
+		for (tid = 0; tid < TID_MAX_LOAD_COUNT; tid++) {
+			tid_msk = (1 << tid);
+			if (retry_tid & tid_msk)
+				iwl4965_turn_on_agg(priv, tid);
+		}
+	}
+
+	spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+	if (lq->agg_ctrl.tid_retry)
+		lq->agg_ctrl.next_retry = jiffies + msecs_to_jiffies(500);
+	spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+	return;
+}
+#endif /*CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+int iwl4965_tx_cmd(struct iwl_priv *priv, struct iwl_cmd *out_cmd,
+		   u8 sta_id, dma_addr_t txcmd_phys,
+		   struct ieee80211_hdr *hdr, u8 hdr_len,
+		   struct ieee80211_tx_control *ctrl, void *sta_in)
+{
+	struct iwl_tx_cmd cmd;
+	struct iwl_tx_cmd *tx = (struct iwl_tx_cmd *)&out_cmd->cmd.payload[0];
+	dma_addr_t scratch_phys;
+	u8 unicast = 0;
+	u8 is_data = 1;
+	u16 fc;
+	u16 rate_flags;
+	int rate_index = min(ctrl->tx_rate & 0xffff, IWL_RATE_COUNT - 1);
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+	__le16 *qc;
+#endif /*CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+	unicast = !is_multicast_ether_addr(hdr->addr1);
+
+	fc = le16_to_cpu(hdr->frame_control);
+	if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+		is_data = 0;
+
+	memcpy(&cmd, &(out_cmd->cmd.tx), sizeof(struct iwl_tx_cmd));
+	memset(tx, 0, sizeof(struct iwl_tx_cmd));
+	memcpy(tx->hdr, hdr, hdr_len);
+
+	tx->len = cmd.len;
+	tx->driver_txop = cmd.driver_txop;
+	tx->stop_time.life_time = cmd.stop_time.life_time;
+	tx->tx_flags = cmd.tx_flags;
+	tx->sta_id = cmd.sta_id;
+	tx->tid_tspec = cmd.tid_tspec;
+	tx->timeout.pm_frame_timeout = cmd.timeout.pm_frame_timeout;
+	tx->next_frame_len = cmd.next_frame_len;
+
+	tx->sec_ctl = cmd.sec_ctl;
+	memcpy(&(tx->key[0]), &(cmd.key[0]), 16);
+	tx->tx_flags = cmd.tx_flags;
+
+	tx->rts_retry_limit = cmd.rts_retry_limit;
+	tx->data_retry_limit = cmd.data_retry_limit;
+
+	scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
+	    offsetof(struct iwl_tx_cmd, scratch);
+	tx->dram_lsb_ptr = cpu_to_le32(scratch_phys);
+	tx->dram_msb_ptr = iwl4965_get_dma_hi_address(scratch_phys);
+
+	/* Hard coded to start at the highest retry fallback position
+	 * until the 4965 specific rate control algorithm is tied in */
+	tx->initial_rate_index = LINK_QUAL_MAX_RETRY_NUM - 1;
+
+	/* Alternate between antenna A and B for successive frames */
+	if (priv->use_ant_b_for_management_frame) {
+		priv->use_ant_b_for_management_frame = 0;
+		rate_flags = RATE_MCS_ANT_B_MSK;
+	} else {
+		priv->use_ant_b_for_management_frame = 1;
+		rate_flags = RATE_MCS_ANT_A_MSK;
+	}
+
+	if (!unicast || !is_data) {
+		if ((rate_index >= IWL_FIRST_CCK_RATE) &&
+		    (rate_index <= IWL_LAST_CCK_RATE))
+			rate_flags |= RATE_MCS_CCK_MSK;
+	} else {
+		tx->initial_rate_index = 0;
+		tx->tx_flags |= TX_CMD_FLG_STA_RATE_MSK;
+	}
+
+	tx->rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[rate_index].plcp,
+						rate_flags);
+
+	if (ieee80211_is_probe_request(fc))
+		tx->tx_flags |= TX_CMD_FLG_TSF_MSK;
+	else if (ieee80211_is_back_request(fc))
+		tx->tx_flags |= TX_CMD_FLG_ACK_MSK |
+			TX_CMD_FLG_IMM_BA_RSP_MASK;
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+	qc = ieee80211_get_qos_ctrl(hdr);
+	if (qc &&
+	    (priv->iw_mode != IEEE80211_IF_TYPE_IBSS)) {
+		u8 tid = 0;
+		tid = (u8) (le16_to_cpu(*qc) & 0xF);
+		if (tid < TID_MAX_LOAD_COUNT)
+			iwl4965_tl_add_packet(priv, tid);
+	}
+
+	if (priv->lq_mngr.agg_ctrl.next_retry &&
+	    (time_after(priv->lq_mngr.agg_ctrl.next_retry, jiffies))) {
+		unsigned long flags;
+
+		spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+		priv->lq_mngr.agg_ctrl.next_retry = 0;
+		spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+		schedule_work(&priv->agg_work);
+	}
+#endif
+#endif
+	return 0;
+}
+
+/**
+ * sign_extend - Sign extend a value using specified bit as sign-bit
+ *
+ * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
+ * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
+ *
+ * @param oper value to sign extend
+ * @param index 0 based bit index (0<=index<32) to sign bit
+ */
+static s32 sign_extend(u32 oper, int index)
+{
+	u8 shift = 31 - index;
+
+	return (s32)(oper << shift) >> shift;
+}
+
+/**
+ * iwl4965_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
+ */
+int iwl4965_get_temperature(const struct iwl_priv *priv)
+{
+	s32 temperature;
+	s32 vt;
+	s32 R1, R2, R3;
+	u32 R4;
+
+	if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
+		(priv->statistics.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)) {
+		IWL_DEBUG_TEMP("Running FAT 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("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
+	 * ALIVE response. */
+	if (!test_bit(STATUS_TEMPERATURE, &priv->status))
+		vt = sign_extend(R4, 23);
+	else
+		vt = sign_extend(
+			le32_to_cpu(priv->statistics.general.temperature), 23);
+
+	IWL_DEBUG_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n",
+		       R1, R2, R3, vt);
+
+	if (R3 == R1) {
+		IWL_ERROR("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("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("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("Getting cooler, delta %d, \n", temp_diff);
+		temp_diff = -temp_diff;
+	} else if (temp_diff == 0)
+		IWL_DEBUG_POWER("Same temp, \n");
+	else
+		IWL_DEBUG_POWER("Getting warmer, delta %d, \n", temp_diff);
+
+	if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
+		IWL_DEBUG_POWER("Thermal txpower calib not needed\n");
+		return 0;
+	}
+
+	IWL_DEBUG_POWER("Thermal txpower calib needed\n");
+
+	return 1;
+}
+
+/* Calculate noise level, based on measurements during network silence just
+ *   before arriving beacon.  This measurement can be done only if we know
+ *   exactly when to expect beacons, therefore only when we're associated. */
+static void iwl4965_rx_calc_noise(struct iwl_priv *priv)
+{
+	struct statistics_rx_non_phy *rx_info
+				= &(priv->statistics.rx.general);
+	int num_active_rx = 0;
+	int total_silence = 0;
+	int bcn_silence_a =
+		le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
+	int bcn_silence_b =
+		le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
+	int bcn_silence_c =
+		le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
+
+	if (bcn_silence_a) {
+		total_silence += bcn_silence_a;
+		num_active_rx++;
+	}
+	if (bcn_silence_b) {
+		total_silence += bcn_silence_b;
+		num_active_rx++;
+	}
+	if (bcn_silence_c) {
+		total_silence += bcn_silence_c;
+		num_active_rx++;
+	}
+
+	/* Average among active antennas */
+	if (num_active_rx)
+		priv->last_rx_noise = (total_silence / num_active_rx) - 107;
+	else
+		priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
+
+	IWL_DEBUG_CALIB("inband silence a %u, b %u, c %u, dBm %d\n",
+			bcn_silence_a, bcn_silence_b, bcn_silence_c,
+			priv->last_rx_noise);
+}
+
+void iwl_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+	int change;
+	s32 temp;
+
+	IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n",
+		     (int)sizeof(priv->statistics), pkt->len);
+
+	change = ((priv->statistics.general.temperature !=
+		   pkt->u.stats.general.temperature) ||
+		  ((priv->statistics.flag &
+		    STATISTICS_REPLY_FLG_FAT_MODE_MSK) !=
+		   (pkt->u.stats.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)));
+
+	memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));
+
+	set_bit(STATUS_STATISTICS, &priv->status);
+
+	/* Reschedule the statistics timer to occur in
+	 * REG_RECALIB_PERIOD seconds to ensure we get a
+	 * thermal update even if the uCode doesn't give
+	 * us one */
+	mod_timer(&priv->statistics_periodic, jiffies +
+		  msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));
+
+	if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
+	    (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
+		iwl4965_rx_calc_noise(priv);
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+		queue_work(priv->workqueue, &priv->sensitivity_work);
+#endif
+	}
+
+	/* If the hardware hasn't reported a change in
+	 * temperature then don't bother computing a
+	 * calibrated temperature value */
+	if (!change)
+		return;
+
+	temp = iwl4965_get_temperature(priv);
+	if (temp < 0)
+		return;
+
+	if (priv->temperature != temp) {
+		if (priv->temperature)
+			IWL_DEBUG_TEMP("Temperature changed "
+				       "from %dC to %dC\n",
+				       KELVIN_TO_CELSIUS(priv->temperature),
+				       KELVIN_TO_CELSIUS(temp));
+		else
+			IWL_DEBUG_TEMP("Temperature "
+				       "initialized to %dC\n",
+				       KELVIN_TO_CELSIUS(temp));
+	}
+
+	priv->temperature = temp;
+	set_bit(STATUS_TEMPERATURE, &priv->status);
+
+	if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
+		     iwl4965_is_temp_calib_needed(priv))
+		queue_work(priv->workqueue, &priv->txpower_work);
+}
+
+static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data,
+				       int include_phy,
+				       struct iwl_rx_mem_buffer *rxb,
+				       struct ieee80211_rx_status *stats)
+{
+	struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+	struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
+	    (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) : NULL;
+	struct ieee80211_hdr *hdr;
+	u16 len;
+	__le32 *rx_end;
+	unsigned int skblen;
+	u32 ampdu_status;
+
+	if (!include_phy && priv->last_phy_res[0])
+		rx_start = (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
+
+	if (!rx_start) {
+		IWL_ERROR("MPDU frame without a PHY data\n");
+		return;
+	}
+	if (include_phy) {
+		hdr = (struct ieee80211_hdr *)((u8 *) & rx_start[1] +
+					       rx_start->cfg_phy_cnt);
+
+		len = le16_to_cpu(rx_start->byte_count);
+
+		rx_end = (__le32 *) ((u8 *) & pkt->u.raw[0] +
+				  sizeof(struct iwl4965_rx_phy_res) +
+				  rx_start->cfg_phy_cnt + len);
+
+	} else {
+		struct iwl4965_rx_mpdu_res_start *amsdu =
+		    (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw;
+
+		hdr = (struct ieee80211_hdr *)(pkt->u.raw +
+			       sizeof(struct iwl4965_rx_mpdu_res_start));
+		len =  le16_to_cpu(amsdu->byte_count);
+		rx_start->byte_count = amsdu->byte_count;
+		rx_end = (__le32 *) (((u8 *) hdr) + len);
+	}
+	if (len > 2342 || len < 16) {
+		IWL_DEBUG_DROP("byte count out of range [16,2342]"
+			       " : %d\n", len);
+		return;
+	}
+
+	ampdu_status = le32_to_cpu(*rx_end);
+	skblen = ((u8 *) rx_end - (u8 *) & pkt->u.raw[0]) + sizeof(u32);
+
+	/* start from MAC */
+	skb_reserve(rxb->skb, (void *)hdr - (void *)pkt);
+	skb_put(rxb->skb, len);	/* end where data ends */
+
+	/* We only process data packets if the interface is open */
+	if (unlikely(!priv->is_open)) {
+		IWL_DEBUG_DROP_LIMIT
+		    ("Dropping packet while interface is not open.\n");
+		return;
+	}
+
+	if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
+		if (iwl_param_hwcrypto)
+			iwl_set_decrypted_flag(priv, rxb->skb,
+					       ampdu_status, stats);
+		iwl_handle_data_packet_monitor(priv, rxb, hdr, len, stats, 0);
+		return;
+	}
+
+	stats->flag = 0;
+	hdr = (struct ieee80211_hdr *)rxb->skb->data;
+
+	if (iwl_param_hwcrypto)
+		iwl_set_decrypted_flag(priv, rxb->skb, ampdu_status, stats);
+
+	ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
+	priv->alloc_rxb_skb--;
+	rxb->skb = NULL;
+#ifdef LED
+	priv->led_packets += len;
+	iwl_setup_activity_timer(priv);
+#endif
+}
+
+/* Calc max signal level (dBm) among 3 possible receivers */
+static int iwl4965_calc_rssi(struct iwl4965_rx_phy_res *rx_resp)
+{
+	/* data from PHY/DSP regarding signal strength, etc.,
+	 *   contents are always there, not configurable by host.  */
+	struct iwl4965_rx_non_cfg_phy *ncphy =
+	    (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy;
+	u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL_AGC_DB_MASK)
+			>> IWL_AGC_DB_POS;
+
+	u32 valid_antennae =
+	    (le16_to_cpu(rx_resp->phy_flags) & RX_PHY_FLAGS_ANTENNAE_MASK)
+			>> RX_PHY_FLAGS_ANTENNAE_OFFSET;
+	u8 max_rssi = 0;
+	u32 i;
+
+	/* Find max rssi among 3 possible receivers.
+	 * These values are measured by the digital signal processor (DSP).
+	 * They should stay fairly constant even as the signal strength varies,
+	 *   if the radio's automatic gain control (AGC) is working right.
+	 * AGC value (see below) will provide the "interesting" info. */
+	for (i = 0; i < 3; i++)
+		if (valid_antennae & (1 << i))
+			max_rssi = max(ncphy->rssi_info[i << 1], max_rssi);
+
+	IWL_DEBUG_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n",
+		ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4],
+		max_rssi, agc);
+
+	/* dBm = max_rssi dB - agc dB - constant.
+	 * Higher AGC (higher radio gain) means lower signal. */
+	return (max_rssi - agc - IWL_RSSI_OFFSET);
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+
+/* Parsed Information Elements */
+struct ieee802_11_elems {
+	u8 *ds_params;
+	u8 ds_params_len;
+	u8 *tim;
+	u8 tim_len;
+	u8 *ibss_params;
+	u8 ibss_params_len;
+	u8 *erp_info;
+	u8 erp_info_len;
+	u8 *ht_cap_param;
+	u8 ht_cap_param_len;
+	u8 *ht_extra_param;
+	u8 ht_extra_param_len;
+};
+
+static int parse_elems(u8 *start, size_t len, struct ieee802_11_elems *elems)
+{
+	size_t left = len;
+	u8 *pos = start;
+	int unknown = 0;
+
+	memset(elems, 0, sizeof(*elems));
+
+	while (left >= 2) {
+		u8 id, elen;
+
+		id = *pos++;
+		elen = *pos++;
+		left -= 2;
+
+		if (elen > left)
+			return -1;
+
+		switch (id) {
+		case WLAN_EID_DS_PARAMS:
+			elems->ds_params = pos;
+			elems->ds_params_len = elen;
+			break;
+		case WLAN_EID_TIM:
+			elems->tim = pos;
+			elems->tim_len = elen;
+			break;
+		case WLAN_EID_IBSS_PARAMS:
+			elems->ibss_params = pos;
+			elems->ibss_params_len = elen;
+			break;
+		case WLAN_EID_ERP_INFO:
+			elems->erp_info = pos;
+			elems->erp_info_len = elen;
+			break;
+		case WLAN_EID_HT_CAPABILITY:
+			elems->ht_cap_param = pos;
+			elems->ht_cap_param_len = elen;
+			break;
+		case WLAN_EID_HT_EXTRA_INFO:
+			elems->ht_extra_param = pos;
+			elems->ht_extra_param_len = elen;
+			break;
+		default:
+			unknown++;
+			break;
+		}
+
+		left -= elen;
+		pos += elen;
+	}
+
+	return 0;
+}
+#endif /* CONFIG_IWLWIFI_HT */
+
+static void iwl4965_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
+	priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
+	priv->stations[sta_id].sta.sta.modify_mask = 0;
+	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+	iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+static void iwl4965_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
+{
+	/* FIXME: need locking over ps_status ??? */
+	u8 sta_id = iwl_hw_find_station(priv, addr);
+
+	if (sta_id != IWL_INVALID_STATION) {
+		u8 sta_awake = priv->stations[sta_id].
+				ps_status == STA_PS_STATUS_WAKE;
+
+		if (sta_awake && ps_bit)
+			priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
+		else if (!sta_awake && !ps_bit) {
+			iwl4965_sta_modify_ps_wake(priv, sta_id);
+			priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;
+		}
+	}
+}
+
+/* Called for REPLY_4965_RX (legacy ABG frames), or
+ * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
+static void iwl4965_rx_reply_rx(struct iwl_priv *priv,
+				struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+	/* Use phy data (Rx signal strength, etc.) contained within
+	 *   this rx packet for legacy frames,
+	 *   or phy data cached from REPLY_RX_PHY_CMD for HT frames. */
+	int include_phy = (pkt->hdr.cmd == REPLY_4965_RX);
+	struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
+		(struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) :
+		(struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
+	__le32 *rx_end;
+	unsigned int len = 0;
+	struct ieee80211_hdr *header;
+	u16 fc;
+	struct ieee80211_rx_status stats = {
+		.mactime = le64_to_cpu(rx_start->timestamp),
+		.channel = le16_to_cpu(rx_start->channel),
+		.phymode =
+			(rx_start->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
+			MODE_IEEE80211G : MODE_IEEE80211A,
+		.antenna = 0,
+		.rate = iwl_hw_get_rate(rx_start->rate_n_flags),
+		.flag = 0,
+#ifdef CONFIG_IWLWIFI_HT_AGG
+		.ordered = 0
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+	};
+	u8 network_packet;
+
+	if ((unlikely(rx_start->cfg_phy_cnt > 20))) {
+		IWL_DEBUG_DROP
+			("dsp size out of range [0,20]: "
+			 "%d/n", rx_start->cfg_phy_cnt);
+		return;
+	}
+	if (!include_phy) {
+		if (priv->last_phy_res[0])
+			rx_start = (struct iwl4965_rx_phy_res *)
+				&priv->last_phy_res[1];
+		else
+			rx_start = NULL;
+	}
+
+	if (!rx_start) {
+		IWL_ERROR("MPDU frame without a PHY data\n");
+		return;
+	}
+
+	if (include_phy) {
+		header = (struct ieee80211_hdr *)((u8 *) & rx_start[1]
+						  + rx_start->cfg_phy_cnt);
+
+		len = le16_to_cpu(rx_start->byte_count);
+		rx_end = (__le32 *) (pkt->u.raw + rx_start->cfg_phy_cnt +
+				  sizeof(struct iwl4965_rx_phy_res) + len);
+	} else {
+		struct iwl4965_rx_mpdu_res_start *amsdu =
+			(struct iwl4965_rx_mpdu_res_start *)pkt->u.raw;
+
+		header = (void *)(pkt->u.raw +
+			sizeof(struct iwl4965_rx_mpdu_res_start));
+		len = le16_to_cpu(amsdu->byte_count);
+		rx_end = (__le32 *) (pkt->u.raw +
+			sizeof(struct iwl4965_rx_mpdu_res_start) + len);
+	}
+
+	if (!(*rx_end & RX_RES_STATUS_NO_CRC32_ERROR) ||
+	    !(*rx_end & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
+		IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n",
+				le32_to_cpu(*rx_end));
+		return;
+	}
+
+	priv->ucode_beacon_time = le32_to_cpu(rx_start->beacon_time_stamp);
+
+	stats.freq = ieee80211chan2mhz(stats.channel);
+
+	/* Find max signal strength (dBm) among 3 antenna/receiver chains */
+	stats.ssi = iwl4965_calc_rssi(rx_start);
+
+	/* Meaningful noise values are available only from beacon statistics,
+	 *   which are gathered only when associated, and indicate noise
+	 *   only for the associated network channel ...
+	 * Ignore these noise values while scanning (other channels) */
+	if (iwl_is_associated(priv) &&
+	    !test_bit(STATUS_SCANNING, &priv->status)) {
+		stats.noise = priv->last_rx_noise;
+		stats.signal = iwl_calc_sig_qual(stats.ssi, stats.noise);
+	} else {
+		stats.noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
+		stats.signal = iwl_calc_sig_qual(stats.ssi, 0);
+	}
+
+	/* Reset beacon noise level if not associated. */
+	if (!iwl_is_associated(priv))
+		priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+	/* TODO:  Parts of iwl_report_frame are broken for 4965 */
+	if (iwl_debug_level & (IWL_DL_RX))
+		/* Set "1" to report good data frames in groups of 100 */
+		iwl_report_frame(priv, pkt, header, 1);
+
+	if (iwl_debug_level & (IWL_DL_RX | IWL_DL_STATS))
+	IWL_DEBUG_RX("Rssi %d, noise %d, qual %d, TSF %lu\n",
+		stats.ssi, stats.noise, stats.signal,
+		 (long unsigned int)le64_to_cpu(rx_start->timestamp));
+#endif
+
+	network_packet = iwl_is_network_packet(priv, header);
+	if (network_packet) {
+		priv->last_rx_rssi = stats.ssi;
+		priv->last_beacon_time =  priv->ucode_beacon_time;
+		priv->last_tsf = le64_to_cpu(rx_start->timestamp);
+	}
+
+	fc = le16_to_cpu(header->frame_control);
+	switch (fc & IEEE80211_FCTL_FTYPE) {
+	case IEEE80211_FTYPE_MGMT:
+
+		if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
+			iwl4965_update_ps_mode(priv, fc  & IEEE80211_FCTL_PM,
+						header->addr2);
+		switch (fc & IEEE80211_FCTL_STYPE) {
+		case IEEE80211_STYPE_PROBE_RESP:
+		case IEEE80211_STYPE_BEACON:
+			if ((priv->iw_mode == IEEE80211_IF_TYPE_STA &&
+			     !compare_ether_addr(header->addr2, priv->bssid)) ||
+			    (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
+			     !compare_ether_addr(header->addr3, priv->bssid))) {
+				struct ieee80211_mgmt *mgmt =
+					(struct ieee80211_mgmt *)header;
+				u64 timestamp =
+					le64_to_cpu(mgmt->u.beacon.timestamp);
+
+				priv->timestamp0 = timestamp & 0xFFFFFFFF;
+				priv->timestamp1 =
+					(timestamp >> 32) & 0xFFFFFFFF;
+				priv->beacon_int = le16_to_cpu(
+				    mgmt->u.beacon.beacon_int);
+				if (priv->call_post_assoc_from_beacon &&
+				    (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
+					priv->call_post_assoc_from_beacon = 0;
+					queue_work(priv->workqueue,
+					    &priv->post_associate.work);
+				}
+			}
+			break;
+
+		case IEEE80211_STYPE_ACTION:
+			break;
+
+			/*
+			 * TODO: There is no callback function from upper
+			 * stack to inform us when associated status. this
+			 * work around to sniff assoc_resp management frame
+			 * and finish the association process.
+			 */
+		case IEEE80211_STYPE_ASSOC_RESP:
+		case IEEE80211_STYPE_REASSOC_RESP:
+			if (network_packet && iwl_is_associated(priv)) {
+#ifdef CONFIG_IWLWIFI_HT
+				u8 *pos = NULL;
+				struct ieee802_11_elems elems;
+#endif				/*CONFIG_IWLWIFI_HT */
+				struct ieee80211_mgmt *mgnt =
+					(struct ieee80211_mgmt *)header;
+
+				priv->assoc_id = (~((1 << 15) | (1 << 14))
+					& le16_to_cpu(mgnt->u.assoc_resp.aid));
+				priv->assoc_capability =
+					le16_to_cpu(
+						mgnt->u.assoc_resp.capab_info);
+#ifdef CONFIG_IWLWIFI_HT
+				pos = mgnt->u.assoc_resp.variable;
+				if (!parse_elems(pos,
+						 len - (pos - (u8 *) mgnt),
+						 &elems)) {
+					if (elems.ht_extra_param &&
+					    elems.ht_cap_param)
+						break;
+				}
+#endif				/*CONFIG_IWLWIFI_HT */
+				/* assoc_id is 0 no association */
+				if (!priv->assoc_id)
+					break;
+				if (priv->beacon_int)
+					queue_work(priv->workqueue,
+					    &priv->post_associate.work);
+				else
+					priv->call_post_assoc_from_beacon = 1;
+			}
+
+			break;
+
+		case IEEE80211_STYPE_PROBE_REQ:
+			if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
+			    !iwl_is_associated(priv)) {
+				IWL_DEBUG_DROP("Dropping (non network): "
+					       MAC_FMT ", " MAC_FMT ", "
+					       MAC_FMT "\n",
+					       MAC_ARG(header->addr1),
+					       MAC_ARG(header->addr2),
+					       MAC_ARG(header->addr3));
+				return;
+			}
+		}
+		iwl4965_handle_data_packet(priv, 0, include_phy, rxb, &stats);
+		break;
+
+	case IEEE80211_FTYPE_CTL:
+#ifdef CONFIG_IWLWIFI_HT_AGG
+		switch (fc & IEEE80211_FCTL_STYPE) {
+		case IEEE80211_STYPE_BACK_REQ:
+			IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n");
+			iwl4965_handle_data_packet(priv, 0, include_phy,
+						rxb, &stats);
+			break;
+		default:
+			break;
+		}
+#endif
+
+		break;
+
+	case IEEE80211_FTYPE_DATA:
+		if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
+			iwl4965_update_ps_mode(priv, fc  & IEEE80211_FCTL_PM,
+						header->addr2);
+
+		if (unlikely(!network_packet))
+			IWL_DEBUG_DROP("Dropping (non network): "
+				       MAC_FMT ", " MAC_FMT ", "
+				       MAC_FMT "\n",
+				       MAC_ARG(header->addr1),
+				       MAC_ARG(header->addr2),
+				       MAC_ARG(header->addr3));
+		else if (unlikely(is_duplicate_packet(priv, header)))
+			IWL_DEBUG_DROP("Dropping (dup): " MAC_FMT ", "
+				       MAC_FMT ", " MAC_FMT "\n",
+				       MAC_ARG(header->addr1),
+				       MAC_ARG(header->addr2),
+				       MAC_ARG(header->addr3));
+		else
+			iwl4965_handle_data_packet(priv, 1, include_phy, rxb,
+						   &stats);
+		break;
+	default:
+		break;
+
+	}
+}
+
+/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
+ * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
+static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
+				    struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+	priv->last_phy_res[0] = 1;
+	memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
+	       sizeof(struct iwl4965_rx_phy_res));
+}
+
+static void iwl4965_rx_missed_beacon_notif(struct iwl_priv *priv,
+					   struct iwl_rx_mem_buffer *rxb)
+
+{
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+	struct iwl_missed_beacon_notif *missed_beacon;
+
+	missed_beacon = &pkt->u.missed_beacon;
+	if (le32_to_cpu(missed_beacon->consequtive_missed_beacons) > 5) {
+		IWL_DEBUG_CALIB("missed bcn cnsq %d totl %d rcd %d expctd %d\n",
+		    le32_to_cpu(missed_beacon->consequtive_missed_beacons),
+		    le32_to_cpu(missed_beacon->total_missed_becons),
+		    le32_to_cpu(missed_beacon->num_recvd_beacons),
+		    le32_to_cpu(missed_beacon->num_expected_beacons));
+		priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
+		if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)))
+			queue_work(priv->workqueue, &priv->sensitivity_work);
+	}
+#endif /*CONFIG_IWLWIFI_SENSITIVITY*/
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+
+static void iwl4965_set_tx_status(struct iwl_priv *priv, int txq_id, int idx,
+				  u32 status, u32 retry_count, u32 rate)
+{
+	struct ieee80211_tx_status *tx_status =
+		&(priv->txq[txq_id].txb[idx].status);
+
+	tx_status->flags = status ? IEEE80211_TX_STATUS_ACK : 0;
+	tx_status->retry_count += retry_count;
+	tx_status->control.tx_rate = rate;
+}
+
+
+static void iwl_sta_modify_enable_tid_tx(struct iwl_priv *priv,
+					 int sta_id, int tid)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
+	priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
+	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+	iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+
+static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv,
+						 struct iwl_ht_agg *agg,
+						 struct iwl_compressed_ba_resp*
+						 ba_resp)
+
+{
+	int i, sh, ack;
+	u16 ba_seq_ctl = le16_to_cpu(ba_resp->ba_seq_ctl);
+	u32 bitmap0, bitmap1;
+	u32 resp_bitmap0 = le32_to_cpu(ba_resp->ba_bitmap0);
+	u32 resp_bitmap1 = le32_to_cpu(ba_resp->ba_bitmap1);
+
+	if (unlikely(!agg->wait_for_ba))  {
+		IWL_ERROR("Received BA when not expected\n");
+		return -EINVAL;
+	}
+	agg->wait_for_ba = 0;
+	IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->ba_seq_ctl);
+	sh = agg->start_idx - SEQ_TO_INDEX(ba_seq_ctl>>4);
+	if (sh < 0) /* tbw something is wrong with indeces */
+		sh += 0x100;
+
+	/* don't use 64 bits for now */
+	bitmap0 = resp_bitmap0 >> sh;
+	bitmap1 = resp_bitmap1 >> sh;
+	bitmap0 |= (resp_bitmap1 & ((1<<sh)|((1<<sh)-1))) << (32 - sh);
+
+	if (agg->frame_count > (64 - sh)) {
+		IWL_DEBUG_TX_REPLY("more frames than bitmap size");
+		return -1;
+	}
+
+	/* check for success or failure according to the
+	 * transmitted bitmap and back bitmap */
+	bitmap0 &= agg->bitmap0;
+	bitmap1 &= agg->bitmap1;
+
+	for (i = 0; i < agg->frame_count ; i++) {
+		int idx = (agg->start_idx + i) & 0xff;
+		ack = bitmap0 & (1 << i);
+		IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
+			ack? "ACK":"NACK", i, idx, agg->start_idx + i);
+		iwl4965_set_tx_status(priv, agg->txq_id, idx, ack, 0,
+			agg->rate_n_flags);
+
+	}
+
+	IWL_DEBUG_TX_REPLY("Bitmap %x%x\n", bitmap0, bitmap1);
+
+	return 0;
+}
+
+static inline int iwl_queue_dec_wrap(int index, int n_bd)
+{
+	return (index == 0) ? n_bd - 1 : index - 1;
+}
+
+static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv,
+					   struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+	struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba;
+	int index;
+	struct iwl_tx_queue *txq = NULL;
+	struct iwl_ht_agg *agg;
+	u16 ba_resp_scd_flow = le16_to_cpu(ba_resp->scd_flow);
+	u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn);
+
+	if (ba_resp_scd_flow >= ARRAY_SIZE(priv->txq)) {
+		IWL_ERROR("BUG_ON scd_flow is bigger than number of queues");
+		return;
+	}
+
+	txq = &priv->txq[ba_resp_scd_flow];
+	agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg;
+	index = iwl_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd);
+
+	/* TODO: Need to get this copy more sefely - now good for debug */
+/*
+	IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from " MAC_FMT ",
+			   sta_id = %d\n",
+			   agg->wait_for_ba,
+			   MAC_ARG((u8*) &ba_resp->sta_addr_lo32),
+			   ba_resp->sta_id);
+	IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%X%X, scd_flow = "
+			   "%d, scd_ssn = %d\n",
+			   ba_resp->tid,
+			   ba_resp->ba_seq_ctl,
+			   ba_resp->ba_bitmap1,
+			   ba_resp->ba_bitmap0,
+			   ba_resp->scd_flow,
+			   ba_resp->scd_ssn);
+	IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%X%X \n",
+			   agg->start_idx,
+			   agg->bitmap1,
+			   agg->bitmap0);
+*/
+	iwl4965_tx_status_reply_compressed_ba(priv, agg, ba_resp);
+	/* releases all the TFDs until the SSN */
+	if (txq->q.last_used != (ba_resp_scd_ssn & 0xff))
+		iwl_tx_queue_reclaim(priv, ba_resp_scd_flow, index);
+
+}
+
+
+static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv, u16 txq_id)
+{
+	iwl_write_restricted_reg(priv,
+		SCD_QUEUE_STATUS_BITS(txq_id),
+		(0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
+		(1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
+}
+
+static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
+					u16 txq_id)
+{
+	u32 tbl_dw_addr;
+	u32 tbl_dw;
+	u16 scd_q2ratid;
+
+	scd_q2ratid = ra_tid & SCD_QUEUE_RA_TID_MAP_RATID_MSK;
+
+	tbl_dw_addr = priv->scd_base_addr +
+			SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
+
+	tbl_dw = iwl_read_restricted_mem(priv, tbl_dw_addr);
+
+	if (txq_id & 0x1)
+		tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
+	else
+		tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
+
+	iwl_write_restricted_mem(priv, tbl_dw_addr, tbl_dw);
+
+	return 0;
+}
+
+/**
+ * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
+ */
+static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id,
+				       int tx_fifo, int sta_id, int tid,
+				       u16 ssn_idx)
+{
+	unsigned long flags;
+	int rc;
+	u16 ra_tid;
+
+	if (IWL_BACK_QUEUE_FIRST_ID > txq_id)
+		IWL_WARNING("queue number too small: %d, must be > %d\n",
+			txq_id, IWL_BACK_QUEUE_FIRST_ID);
+
+	ra_tid = BUILD_RAxTID(sta_id, tid);
+
+	iwl_sta_modify_enable_tid_tx(priv, sta_id, tid);
+
+	spin_lock_irqsave(&priv->lock, flags);
+	rc = iwl_grab_restricted_access(priv);
+	if (rc) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return rc;
+	}
+
+	iwl4965_tx_queue_stop_scheduler(priv, txq_id);
+
+	iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
+
+
+	iwl_set_bits_restricted_reg(priv, SCD_QUEUECHAIN_SEL, (1<<txq_id));
+
+	priv->txq[txq_id].q.last_used = (ssn_idx & 0xff);
+	priv->txq[txq_id].q.first_empty = (ssn_idx & 0xff);
+
+	/* supposes that ssn_idx is valid (!= 0xFFF) */
+	iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
+
+	iwl_write_restricted_mem(priv,
+			priv->scd_base_addr + SCD_CONTEXT_QUEUE_OFFSET(txq_id),
+			(SCD_WIN_SIZE << SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
+			SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
+
+	iwl_write_restricted_mem(priv, priv->scd_base_addr +
+			SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32),
+			(SCD_FRAME_LIMIT << SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS)
+			& SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
+
+	iwl_set_bits_restricted_reg(priv, SCD_INTERRUPT_MASK, (1 << txq_id));
+
+	iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
+
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return 0;
+}
+
+/**
+ * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
+ */
+static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id,
+					u16 ssn_idx, u8 tx_fifo)
+{
+	unsigned long flags;
+	int rc;
+
+	if (IWL_BACK_QUEUE_FIRST_ID > txq_id) {
+		IWL_WARNING("queue number too small: %d, must be > %d\n",
+				txq_id, IWL_BACK_QUEUE_FIRST_ID);
+		return -EINVAL;
+	}
+
+	spin_lock_irqsave(&priv->lock, flags);
+	rc = iwl_grab_restricted_access(priv);
+	if (rc) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		return rc;
+	}
+
+	iwl4965_tx_queue_stop_scheduler(priv, txq_id);
+
+	iwl_clear_bits_restricted_reg(priv, SCD_QUEUECHAIN_SEL, (1 << txq_id));
+
+	priv->txq[txq_id].q.last_used = (ssn_idx & 0xff);
+	priv->txq[txq_id].q.first_empty = (ssn_idx & 0xff);
+	/* supposes that ssn_idx is valid (!= 0xFFF) */
+	iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
+
+	iwl_clear_bits_restricted_reg(priv, SCD_INTERRUPT_MASK, (1 << txq_id));
+	iwl4965_txq_ctx_deactivate(priv, txq_id);
+	iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
+
+	iwl_release_restricted_access(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return 0;
+}
+
+#endif/* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+/*
+ * RATE SCALE CODE
+ */
+int iwl4965_init_hw_rates(struct iwl_priv *priv, struct ieee80211_rate *rates)
+{
+	return 0;
+}
+
+
+/**
+ * iwl4965_add_station - Initialize a station's hardware rate table
+ *
+ * The uCode contains a table of fallback rates and retries per rate
+ * for automatic fallback during transmission.
+ *
+ * NOTE: This initializes the table for a single retry per data rate
+ * which is not optimal.  Setting up an intelligent retry per rate
+ * requires feedback from transmission, which isn't exposed through
+ * rc80211_simple which is what this driver is currently using.
+ *
+ */
+void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
+{
+	int i, r;
+	struct iwl_link_quality_cmd link_cmd = {
+		.reserved1 = 0,
+	};
+	u16 rate_flags;
+
+	/* Set up the rate scaling to start at 54M and fallback
+	 * all the way to 1M in IEEE order and then spin on IEEE */
+	if (is_ap)
+		r = IWL_RATE_54M_INDEX;
+	else if (priv->phymode == MODE_IEEE80211A)
+		r = IWL_RATE_6M_INDEX;
+	else
+		r = IWL_RATE_1M_INDEX;
+
+	for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
+		rate_flags = 0;
+		if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
+			rate_flags |= RATE_MCS_CCK_MSK;
+
+		rate_flags |= RATE_MCS_ANT_B_MSK;
+		rate_flags &= ~RATE_MCS_ANT_A_MSK;
+		link_cmd.rs_table[i].rate_n_flags =
+			iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
+		r = iwl_get_prev_ieee_rate(r);
+	}
+
+	link_cmd.general_params.single_stream_ant_msk = 2;
+	link_cmd.general_params.dual_stream_ant_msk = 3;
+	link_cmd.agg_params.agg_dis_start_th = 3;
+	link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
+
+	/* Update the rate scaling for control frame Tx to AP */
+	link_cmd.sta_id = is_ap ? IWL_AP_ID : IWL4965_BROADCAST_ID;
+
+	iwl_send_cmd_pdu(priv, REPLY_TX_LINK_QUALITY_CMD, sizeof(link_cmd),
+			 &link_cmd);
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+
+static u8 iwl_is_channel_extension(struct iwl_priv *priv, int phymode,
+				   u16 channel, u8 extension_chan_offset)
+{
+	const struct iwl_channel_info *ch_info;
+
+	ch_info = iwl_get_channel_info(priv, phymode, channel);
+	if (!is_channel_valid(ch_info))
+		return 0;
+
+	if (extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO)
+		return 0;
+
+	if ((ch_info->fat_extension_channel == extension_chan_offset) ||
+	    (ch_info->fat_extension_channel == HT_IE_EXT_CHANNEL_MAX))
+		return 1;
+
+	return 0;
+}
+
+static u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
+				const struct sta_ht_info *ht_info)
+{
+
+	if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
+		return 0;
+
+	if (ht_info->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ)
+		return 0;
+
+	if (ht_info->extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO)
+		return 0;
+
+	/* no fat tx allowed on 2.4GHZ */
+	if (priv->phymode != MODE_IEEE80211A)
+		return 0;
+	return (iwl_is_channel_extension(priv, priv->phymode,
+					 ht_info->control_channel,
+					 ht_info->extension_chan_offset));
+}
+
+void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct sta_ht_info *ht_info)
+{
+	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
+	u32 val;
+
+	if (!ht_info->is_ht)
+		return;
+
+	if (iwl_is_fat_tx_allowed(priv, ht_info))
+		rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
+	else
+		rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
+				 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
+
+	if (le16_to_cpu(rxon->channel) != ht_info->control_channel) {
+		IWL_DEBUG_ASSOC("control diff than current %d %d\n",
+				le16_to_cpu(rxon->channel),
+				ht_info->control_channel);
+		rxon->channel = cpu_to_le16(ht_info->control_channel);
+		return;
+	}
+
+	/* Note: control channel is oposit to extension channel */
+	switch (ht_info->extension_chan_offset) {
+	case IWL_EXT_CHANNEL_OFFSET_ABOVE:
+		rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
+		break;
+	case IWL_EXT_CHANNEL_OFFSET_BELOW:
+		rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
+		break;
+	case IWL_EXT_CHANNEL_OFFSET_AUTO:
+		rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
+		break;
+	default:
+		rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
+		break;
+	}
+
+	val = ht_info->operating_mode;
+
+	rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
+
+	priv->active_rate_ht[0] = ht_info->supp_rates[0];
+	priv->active_rate_ht[1] = ht_info->supp_rates[1];
+	iwl4965_set_rxon_chain(priv);
+
+	IWL_DEBUG_ASSOC("supported HT rate 0x%X %X "
+			"rxon flags 0x%X operation mode :0x%X "
+			"extension channel offset 0x%x "
+			"control chan %d\n",
+			priv->active_rate_ht[0], priv->active_rate_ht[1],
+			le32_to_cpu(rxon->flags), ht_info->operating_mode,
+			ht_info->extension_chan_offset,
+			ht_info->control_channel);
+	return;
+}
+
+void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index)
+{
+	__le32 sta_flags;
+	struct sta_ht_info *ht_info = &priv->current_assoc_ht;
+
+	priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
+	if (!ht_info->is_ht)
+		goto done;
+
+	sta_flags = priv->stations[index].sta.station_flags;
+
+	if (ht_info->tx_mimo_ps_mode == IWL_MIMO_PS_DYNAMIC)
+		sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
+	else
+		sta_flags &= ~STA_FLG_RTS_MIMO_PROT_MSK;
+
+	sta_flags |= cpu_to_le32(
+		(u32)ht_info->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
+
+	sta_flags |= cpu_to_le32(
+		(u32)ht_info->mpdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
+
+	sta_flags &= (~STA_FLG_FAT_EN_MSK);
+	ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_20MHZ;
+	ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_20MHZ;
+
+	if (iwl_is_fat_tx_allowed(priv, ht_info)) {
+		sta_flags |= STA_FLG_FAT_EN_MSK;
+		ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_40MHZ;
+		if (ht_info->supported_chan_width == IWL_CHANNEL_WIDTH_40MHZ)
+			ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_40MHZ;
+	}
+	priv->current_channel_width = ht_info->tx_chan_width;
+	priv->stations[index].sta.station_flags = sta_flags;
+ done:
+	return;
+}
+
+#ifdef CONFIG_IWLWIFI_HT_AGG
+
+static void iwl4965_sta_modify_add_ba_tid(struct iwl_priv *priv,
+					  int sta_id, int tid, u16 ssn)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	priv->stations[sta_id].sta.station_flags_msk = 0;
+	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
+	priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
+	priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
+	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+	iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+static void iwl4965_sta_modify_del_ba_tid(struct iwl_priv *priv,
+					  int sta_id, int tid)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	priv->stations[sta_id].sta.station_flags_msk = 0;
+	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
+	priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
+	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+	iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+static const u16 default_tid_to_tx_fifo[] = {
+	IWL_TX_FIFO_AC1,
+	IWL_TX_FIFO_AC0,
+	IWL_TX_FIFO_AC0,
+	IWL_TX_FIFO_AC1,
+	IWL_TX_FIFO_AC2,
+	IWL_TX_FIFO_AC2,
+	IWL_TX_FIFO_AC3,
+	IWL_TX_FIFO_AC3,
+	IWL_TX_FIFO_NONE,
+	IWL_TX_FIFO_NONE,
+	IWL_TX_FIFO_NONE,
+	IWL_TX_FIFO_NONE,
+	IWL_TX_FIFO_NONE,
+	IWL_TX_FIFO_NONE,
+	IWL_TX_FIFO_NONE,
+	IWL_TX_FIFO_NONE,
+	IWL_TX_FIFO_AC3
+};
+
+static int iwl_txq_ctx_activate_free(struct iwl_priv *priv)
+{
+	int txq_id;
+
+	for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++)
+		if (!test_and_set_bit(txq_id, &priv->txq_ctx_active_msk))
+			return txq_id;
+	return -1;
+}
+
+int iwl_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da, u16 tid,
+			    u16 *start_seq_num)
+{
+
+	struct iwl_priv *priv = hw->priv;
+	int sta_id;
+	int tx_fifo;
+	int txq_id;
+	int ssn = -1;
+	unsigned long flags;
+	struct iwl_tid_data *tid_data;
+
+	if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
+		tx_fifo = default_tid_to_tx_fifo[tid];
+	else
+		return -EINVAL;
+
+	IWL_WARNING("iwl-AGG iwl_mac_ht_tx_agg_start on da=" MAC_FMT
+		    " tid=%d\n", MAC_ARG(da), tid);
+
+	sta_id = iwl_hw_find_station(priv, da);
+	if (sta_id == IWL_INVALID_STATION)
+		return -ENXIO;
+
+	txq_id = iwl_txq_ctx_activate_free(priv);
+	if (txq_id == -1)
+		return -ENXIO;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	tid_data = &priv->stations[sta_id].tid[tid];
+	ssn = SEQ_TO_SN(tid_data->seq_number);
+	tid_data->agg.txq_id = txq_id;
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+	*start_seq_num = ssn;
+	iwl4965_ba_status(priv, tid, BA_STATUS_ACTIVE);
+	return iwl4965_tx_queue_agg_enable(priv, txq_id, tx_fifo,
+					   sta_id, tid, ssn);
+}
+
+
+int iwl_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, u8 *da, u16 tid,
+			   int generator)
+{
+
+	struct iwl_priv *priv = hw->priv;
+	int tx_fifo_id, txq_id, sta_id, ssn = -1;
+	struct iwl_tid_data *tid_data;
+	int rc;
+	if (!da) {
+		IWL_ERROR("%s: da = NULL\n", __func__);
+		return -EINVAL;
+	}
+
+	if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
+		tx_fifo_id = default_tid_to_tx_fifo[tid];
+	else
+		return -EINVAL;
+
+	sta_id = iwl_hw_find_station(priv, da);
+
+	if (sta_id == IWL_INVALID_STATION)
+		return -ENXIO;
+
+	tid_data = &priv->stations[sta_id].tid[tid];
+	ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
+	txq_id = tid_data->agg.txq_id;
+
+	rc = iwl4965_tx_queue_agg_disable(priv, txq_id, ssn, tx_fifo_id);
+	/* FIXME: need more safe way to handle error condition */
+	if (rc)
+		return rc;
+
+	iwl4965_ba_status(priv, tid, BA_STATUS_INITIATOR_DELBA);
+	IWL_DEBUG_INFO("iwl_mac_ht_tx_agg_stop on da=" MAC_FMT " tid=%d\n",
+		    MAC_ARG(da), tid);
+
+	return 0;
+}
+
+int iwl_mac_ht_rx_agg_start(struct ieee80211_hw *hw, u8 *da,
+			    u16 tid, u16 start_seq_num)
+{
+	struct iwl_priv *priv = hw->priv;
+	int sta_id;
+
+	IWL_WARNING("iwl-AGG iwl_mac_ht_rx_agg_start on da=" MAC_FMT
+		    " tid=%d\n", MAC_ARG(da), tid);
+	sta_id = iwl_hw_find_station(priv, da);
+	iwl4965_sta_modify_add_ba_tid(priv, sta_id, tid, start_seq_num);
+	return 0;
+}
+
+int iwl_mac_ht_rx_agg_stop(struct ieee80211_hw *hw, u8 *da,
+			   u16 tid, int generator)
+{
+	struct iwl_priv *priv = hw->priv;
+	int sta_id;
+
+	IWL_WARNING("iwl-AGG iwl_mac_ht_rx_agg_stop on da=" MAC_FMT " tid=%d\n",
+		     MAC_ARG(da), tid);
+	sta_id = iwl_hw_find_station(priv, da);
+	iwl4965_sta_modify_del_ba_tid(priv, sta_id, tid);
+	return 0;
+}
+
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+/* Set up 4965-specific Rx frame reply handlers */
+void iwl_hw_rx_handler_setup(struct iwl_priv *priv)
+{
+	/* Legacy Rx frames */
+	priv->rx_handlers[REPLY_4965_RX] = iwl4965_rx_reply_rx;
+
+	/* High-throughput (HT) Rx frames */
+	priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
+	priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
+
+	priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
+	    iwl4965_rx_missed_beacon_notif;
+
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+	priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl4965_rx_reply_compressed_ba;
+#endif /* CONFIG_IWLWIFI_AGG */
+#endif /* CONFIG_IWLWIFI */
+}
+
+void iwl_hw_setup_deferred_work(struct iwl_priv *priv)
+{
+	INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work);
+	INIT_WORK(&priv->statistics_work, iwl4965_bg_statistics_work);
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+	INIT_WORK(&priv->sensitivity_work, iwl4965_bg_sensitivity_work);
+#endif
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+	INIT_WORK(&priv->agg_work, iwl4965_bg_agg_work);
+#endif /* CONFIG_IWLWIFI_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+	init_timer(&priv->statistics_periodic);
+	priv->statistics_periodic.data = (unsigned long)priv;
+	priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
+}
+
+void iwl_hw_cancel_deferred_work(struct iwl_priv *priv)
+{
+	del_timer_sync(&priv->statistics_periodic);
+
+	cancel_delayed_work(&priv->init_alive_start);
+}
+
+struct pci_device_id iwl_hw_card_ids[] = {
+	{0x8086, 0x4229, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{0x8086, 0x4230, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{0}
+};
+
+int iwl_eeprom_aqcuire_semaphore(struct iwl_priv *priv)
+{
+	u16 count;
+	int rc;
+
+	for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
+		iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+			CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
+		rc = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
+					CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
+					CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
+					EEPROM_SEM_TIMEOUT);
+		if (rc >= 0) {
+			IWL_DEBUG_IO("Aqcuired semaphore after %d tries.\n",
+				count+1);
+			return rc;
+		}
+	}
+
+	return rc;
+}
+
+inline void iwl_eeprom_release_semaphore(struct iwl_priv *priv)
+{
+	iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
+		CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
+}
+
+
+MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);