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

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

	drivers/net/wireless/iwlegacy

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

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

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

1 files changed, 2744 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlegacy/iwl-3945.c b/drivers/net/wireless/iwlegacy/iwl-3945.c
new file mode 100644
index 00000000000..8359594839e
--- /dev/null
+++ b/drivers/net/wireless/iwlegacy/iwl-3945.c
@@ -0,0 +1,2744 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.h>
+#include <asm/unaligned.h>
+#include <net/mac80211.h>
+
+#include "iwl-fh.h"
+#include "iwl-3945-fh.h"
+#include "iwl-commands.h"
+#include "iwl-sta.h"
+#include "iwl-3945.h"
+#include "iwl-eeprom.h"
+#include "iwl-core.h"
+#include "iwl-helpers.h"
+#include "iwl-led.h"
+#include "iwl-3945-led.h"
+#include "iwl-3945-debugfs.h"
+
+#define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np)    \
+	[IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##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, \
+				    IWL_RATE_##r##M_INDEX_TABLE, \
+				    IWL_RATE_##ip##M_INDEX_TABLE }
+
+/*
+ * Parameter order:
+ *   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 iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = {
+	IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2),    /*  1mbps */
+	IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5),          /*  2mbps */
+	IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
+	IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18),      /* 11mbps */
+	IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
+	IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11),       /*  9mbps */
+	IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
+	IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
+	IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
+	IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
+	IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
+	IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
+};
+
+static inline u8 iwl3945_get_prev_ieee_rate(u8 rate_index)
+{
+	u8 rate = iwl3945_rates[rate_index].prev_ieee;
+
+	if (rate == IWL_RATE_INVALID)
+		rate = rate_index;
+	return rate;
+}
+
+/* 1 = enable the iwl3945_disable_events() function */
+#define IWL_EVT_DISABLE (0)
+#define IWL_EVT_DISABLE_SIZE (1532/32)
+
+/**
+ * iwl3945_disable_events - Disable selected events in uCode event log
+ *
+ * Disable an event by writing "1"s into "disable"
+ *   bitmap in SRAM.  Bit position corresponds to Event # (id/type).
+ *   Default values of 0 enable uCode events to be logged.
+ * Use for only special debugging.  This function is just a placeholder as-is,
+ *   you'll need to provide the special bits! ...
+ *   ... and set IWL_EVT_DISABLE to 1. */
+void iwl3945_disable_events(struct iwl_priv *priv)
+{
+	int i;
+	u32 base;		/* SRAM address of event log header */
+	u32 disable_ptr;	/* SRAM address of event-disable bitmap array */
+	u32 array_size;		/* # of u32 entries in array */
+	static const u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
+		0x00000000,	/*   31 -    0  Event id numbers */
+		0x00000000,	/*   63 -   32 */
+		0x00000000,	/*   95 -   64 */
+		0x00000000,	/*  127 -   96 */
+		0x00000000,	/*  159 -  128 */
+		0x00000000,	/*  191 -  160 */
+		0x00000000,	/*  223 -  192 */
+		0x00000000,	/*  255 -  224 */
+		0x00000000,	/*  287 -  256 */
+		0x00000000,	/*  319 -  288 */
+		0x00000000,	/*  351 -  320 */
+		0x00000000,	/*  383 -  352 */
+		0x00000000,	/*  415 -  384 */
+		0x00000000,	/*  447 -  416 */
+		0x00000000,	/*  479 -  448 */
+		0x00000000,	/*  511 -  480 */
+		0x00000000,	/*  543 -  512 */
+		0x00000000,	/*  575 -  544 */
+		0x00000000,	/*  607 -  576 */
+		0x00000000,	/*  639 -  608 */
+		0x00000000,	/*  671 -  640 */
+		0x00000000,	/*  703 -  672 */
+		0x00000000,	/*  735 -  704 */
+		0x00000000,	/*  767 -  736 */
+		0x00000000,	/*  799 -  768 */
+		0x00000000,	/*  831 -  800 */
+		0x00000000,	/*  863 -  832 */
+		0x00000000,	/*  895 -  864 */
+		0x00000000,	/*  927 -  896 */
+		0x00000000,	/*  959 -  928 */
+		0x00000000,	/*  991 -  960 */
+		0x00000000,	/* 1023 -  992 */
+		0x00000000,	/* 1055 - 1024 */
+		0x00000000,	/* 1087 - 1056 */
+		0x00000000,	/* 1119 - 1088 */
+		0x00000000,	/* 1151 - 1120 */
+		0x00000000,	/* 1183 - 1152 */
+		0x00000000,	/* 1215 - 1184 */
+		0x00000000,	/* 1247 - 1216 */
+		0x00000000,	/* 1279 - 1248 */
+		0x00000000,	/* 1311 - 1280 */
+		0x00000000,	/* 1343 - 1312 */
+		0x00000000,	/* 1375 - 1344 */
+		0x00000000,	/* 1407 - 1376 */
+		0x00000000,	/* 1439 - 1408 */
+		0x00000000,	/* 1471 - 1440 */
+		0x00000000,	/* 1503 - 1472 */
+	};
+
+	base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
+	if (!iwl3945_hw_valid_rtc_data_addr(base)) {
+		IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
+		return;
+	}
+
+	disable_ptr = iwl_legacy_read_targ_mem(priv, base + (4 * sizeof(u32)));
+	array_size = iwl_legacy_read_targ_mem(priv, base + (5 * sizeof(u32)));
+
+	if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
+		IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n",
+			       disable_ptr);
+		for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
+			iwl_legacy_write_targ_mem(priv,
+					   disable_ptr + (i * sizeof(u32)),
+					   evt_disable[i]);
+
+	} else {
+		IWL_DEBUG_INFO(priv, "Selected uCode log events may be disabled\n");
+		IWL_DEBUG_INFO(priv, "  by writing \"1\"s into disable bitmap\n");
+		IWL_DEBUG_INFO(priv, "  in SRAM at 0x%x, size %d u32s\n",
+			       disable_ptr, array_size);
+	}
+
+}
+
+static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
+{
+	int idx;
+
+	for (idx = 0; idx < IWL_RATE_COUNT_3945; idx++)
+		if (iwl3945_rates[idx].plcp == plcp)
+			return idx;
+	return -1;
+}
+
+#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
+#define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x
+
+static const char *iwl3945_get_tx_fail_reason(u32 status)
+{
+	switch (status & TX_STATUS_MSK) {
+	case TX_3945_STATUS_SUCCESS:
+		return "SUCCESS";
+		TX_STATUS_ENTRY(SHORT_LIMIT);
+		TX_STATUS_ENTRY(LONG_LIMIT);
+		TX_STATUS_ENTRY(FIFO_UNDERRUN);
+		TX_STATUS_ENTRY(MGMNT_ABORT);
+		TX_STATUS_ENTRY(NEXT_FRAG);
+		TX_STATUS_ENTRY(LIFE_EXPIRE);
+		TX_STATUS_ENTRY(DEST_PS);
+		TX_STATUS_ENTRY(ABORTED);
+		TX_STATUS_ENTRY(BT_RETRY);
+		TX_STATUS_ENTRY(STA_INVALID);
+		TX_STATUS_ENTRY(FRAG_DROPPED);
+		TX_STATUS_ENTRY(TID_DISABLE);
+		TX_STATUS_ENTRY(FRAME_FLUSHED);
+		TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
+		TX_STATUS_ENTRY(TX_LOCKED);
+		TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
+	}
+
+	return "UNKNOWN";
+}
+#else
+static inline const char *iwl3945_get_tx_fail_reason(u32 status)
+{
+	return "";
+}
+#endif
+
+/*
+ * get ieee prev rate from rate scale table.
+ * for A and B mode we need to overright prev
+ * value
+ */
+int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
+{
+	int next_rate = iwl3945_get_prev_ieee_rate(rate);
+
+	switch (priv->band) {
+	case IEEE80211_BAND_5GHZ:
+		if (rate == IWL_RATE_12M_INDEX)
+			next_rate = IWL_RATE_9M_INDEX;
+		else if (rate == IWL_RATE_6M_INDEX)
+			next_rate = IWL_RATE_6M_INDEX;
+		break;
+	case IEEE80211_BAND_2GHZ:
+		if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
+		    iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
+			if (rate == IWL_RATE_11M_INDEX)
+				next_rate = IWL_RATE_5M_INDEX;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return next_rate;
+}
+
+
+/**
+ * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
+ *
+ * When FW advances 'R' index, all entries between old and new 'R' index
+ * need to be reclaimed. As result, some free space forms. If there is
+ * enough free space (> low mark), wake the stack that feeds us.
+ */
+static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
+				     int txq_id, int index)
+{
+	struct iwl_tx_queue *txq = &priv->txq[txq_id];
+	struct iwl_queue *q = &txq->q;
+	struct iwl_tx_info *tx_info;
+
+	BUG_ON(txq_id == IWL39_CMD_QUEUE_NUM);
+
+	for (index = iwl_legacy_queue_inc_wrap(index, q->n_bd);
+		q->read_ptr != index;
+		q->read_ptr = iwl_legacy_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+
+		tx_info = &txq->txb[txq->q.read_ptr];
+		ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb);
+		tx_info->skb = NULL;
+		priv->cfg->ops->lib->txq_free_tfd(priv, txq);
+	}
+
+	if (iwl_legacy_queue_space(q) > q->low_mark && (txq_id >= 0) &&
+			(txq_id != IWL39_CMD_QUEUE_NUM) &&
+			priv->mac80211_registered)
+		iwl_legacy_wake_queue(priv, txq);
+}
+
+/**
+ * iwl3945_rx_reply_tx - Handle Tx response
+ */
+static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
+				struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	u16 sequence = le16_to_cpu(pkt->hdr.sequence);
+	int txq_id = SEQ_TO_QUEUE(sequence);
+	int index = SEQ_TO_INDEX(sequence);
+	struct iwl_tx_queue *txq = &priv->txq[txq_id];
+	struct ieee80211_tx_info *info;
+	struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
+	u32  status = le32_to_cpu(tx_resp->status);
+	int rate_idx;
+	int fail;
+
+	if ((index >= txq->q.n_bd) || (iwl_legacy_queue_used(&txq->q, index) == 0)) {
+		IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
+			  "is out of range [0-%d] %d %d\n", txq_id,
+			  index, txq->q.n_bd, txq->q.write_ptr,
+			  txq->q.read_ptr);
+		return;
+	}
+
+	txq->time_stamp = jiffies;
+	info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb);
+	ieee80211_tx_info_clear_status(info);
+
+	/* Fill the MRR chain with some info about on-chip retransmissions */
+	rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
+	if (info->band == IEEE80211_BAND_5GHZ)
+		rate_idx -= IWL_FIRST_OFDM_RATE;
+
+	fail = tx_resp->failure_frame;
+
+	info->status.rates[0].idx = rate_idx;
+	info->status.rates[0].count = fail + 1; /* add final attempt */
+
+	/* tx_status->rts_retry_count = tx_resp->failure_rts; */
+	info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
+				IEEE80211_TX_STAT_ACK : 0;
+
+	IWL_DEBUG_TX(priv, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
+			txq_id, iwl3945_get_tx_fail_reason(status), status,
+			tx_resp->rate, tx_resp->failure_frame);
+
+	IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index);
+	iwl3945_tx_queue_reclaim(priv, txq_id, index);
+
+	if (status & TX_ABORT_REQUIRED_MSK)
+		IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
+}
+
+
+
+/*****************************************************************************
+ *
+ * Intel PRO/Wireless 3945ABG/BG Network Connection
+ *
+ *  RX handler implementations
+ *
+ *****************************************************************************/
+#ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
+static void iwl3945_accumulative_statistics(struct iwl_priv *priv,
+					    __le32 *stats)
+{
+	int i;
+	__le32 *prev_stats;
+	u32 *accum_stats;
+	u32 *delta, *max_delta;
+
+	prev_stats = (__le32 *)&priv->_3945.statistics;
+	accum_stats = (u32 *)&priv->_3945.accum_statistics;
+	delta = (u32 *)&priv->_3945.delta_statistics;
+	max_delta = (u32 *)&priv->_3945.max_delta;
+
+	for (i = sizeof(__le32); i < sizeof(struct iwl3945_notif_statistics);
+	     i += sizeof(__le32), stats++, prev_stats++, delta++,
+	     max_delta++, accum_stats++) {
+		if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
+			*delta = (le32_to_cpu(*stats) -
+				le32_to_cpu(*prev_stats));
+			*accum_stats += *delta;
+			if (*delta > *max_delta)
+				*max_delta = *delta;
+		}
+	}
+
+	/* reset accumulative statistics for "no-counter" type statistics */
+	priv->_3945.accum_statistics.general.temperature =
+		priv->_3945.statistics.general.temperature;
+	priv->_3945.accum_statistics.general.ttl_timestamp =
+		priv->_3945.statistics.general.ttl_timestamp;
+}
+#endif
+
+void iwl3945_hw_rx_statistics(struct iwl_priv *priv,
+		struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+	IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
+		     (int)sizeof(struct iwl3945_notif_statistics),
+		     le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
+#ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
+	iwl3945_accumulative_statistics(priv, (__le32 *)&pkt->u.raw);
+#endif
+	iwl_legacy_recover_from_statistics(priv, pkt);
+
+	memcpy(&priv->_3945.statistics, pkt->u.raw, sizeof(priv->_3945.statistics));
+}
+
+void iwl3945_reply_statistics(struct iwl_priv *priv,
+			      struct iwl_rx_mem_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	__le32 *flag = (__le32 *)&pkt->u.raw;
+
+	if (le32_to_cpu(*flag) & UCODE_STATISTICS_CLEAR_MSK) {
+#ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
+		memset(&priv->_3945.accum_statistics, 0,
+			sizeof(struct iwl3945_notif_statistics));
+		memset(&priv->_3945.delta_statistics, 0,
+			sizeof(struct iwl3945_notif_statistics));
+		memset(&priv->_3945.max_delta, 0,
+			sizeof(struct iwl3945_notif_statistics));
+#endif
+		IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
+	}
+	iwl3945_hw_rx_statistics(priv, rxb);
+}
+
+
+/******************************************************************************
+ *
+ * Misc. internal state and helper functions
+ *
+ ******************************************************************************/
+
+/* This is necessary only for a number of statistics, see the caller. */
+static int iwl3945_is_network_packet(struct iwl_priv *priv,
+		struct ieee80211_hdr *header)
+{
+	/* Filter incoming packets to determine if they are targeted toward
+	 * this network, discarding packets coming from ourselves */
+	switch (priv->iw_mode) {
+	case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source    | BSSID */
+		/* packets to our IBSS update information */
+		return !compare_ether_addr(header->addr3, priv->bssid);
+	case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */
+		/* packets to our IBSS update information */
+		return !compare_ether_addr(header->addr2, priv->bssid);
+	default:
+		return 1;
+	}
+}
+
+static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv,
+				   struct iwl_rx_mem_buffer *rxb,
+				   struct ieee80211_rx_status *stats)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
+	struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
+	struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
+	u16 len = le16_to_cpu(rx_hdr->len);
+	struct sk_buff *skb;
+	__le16 fc = hdr->frame_control;
+
+	/* We received data from the HW, so stop the watchdog */
+	if (unlikely(len + IWL39_RX_FRAME_SIZE >
+		     PAGE_SIZE << priv->hw_params.rx_page_order)) {
+		IWL_DEBUG_DROP(priv, "Corruption detected!\n");
+		return;
+	}
+
+	/* We only process data packets if the interface is open */
+	if (unlikely(!priv->is_open)) {
+		IWL_DEBUG_DROP_LIMIT(priv,
+			"Dropping packet while interface is not open.\n");
+		return;
+	}
+
+	skb = dev_alloc_skb(128);
+	if (!skb) {
+		IWL_ERR(priv, "dev_alloc_skb failed\n");
+		return;
+	}
+
+	if (!iwl3945_mod_params.sw_crypto)
+		iwl_legacy_set_decrypted_flag(priv,
+				       (struct ieee80211_hdr *)rxb_addr(rxb),
+				       le32_to_cpu(rx_end->status), stats);
+
+	skb_add_rx_frag(skb, 0, rxb->page,
+			(void *)rx_hdr->payload - (void *)pkt, len);
+
+	iwl_legacy_update_stats(priv, false, fc, len);
+	memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
+
+	ieee80211_rx(priv->hw, skb);
+	priv->alloc_rxb_page--;
+	rxb->page = NULL;
+}
+
+#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
+
+static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
+				struct iwl_rx_mem_buffer *rxb)
+{
+	struct ieee80211_hdr *header;
+	struct ieee80211_rx_status rx_status;
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
+	struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
+	struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
+	u16 rx_stats_sig_avg __maybe_unused = le16_to_cpu(rx_stats->sig_avg);
+	u16 rx_stats_noise_diff __maybe_unused = le16_to_cpu(rx_stats->noise_diff);
+	u8 network_packet;
+
+	rx_status.flag = 0;
+	rx_status.mactime = le64_to_cpu(rx_end->timestamp);
+	rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
+				IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
+	rx_status.freq =
+		ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel),
+					       rx_status.band);
+
+	rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
+	if (rx_status.band == IEEE80211_BAND_5GHZ)
+		rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
+
+	rx_status.antenna = (le16_to_cpu(rx_hdr->phy_flags) &
+					RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
+
+	/* set the preamble flag if appropriate */
+	if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
+		rx_status.flag |= RX_FLAG_SHORTPRE;
+
+	if ((unlikely(rx_stats->phy_count > 20))) {
+		IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
+				rx_stats->phy_count);
+		return;
+	}
+
+	if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
+	    || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
+		IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
+		return;
+	}
+
+
+
+	/* Convert 3945's rssi indicator to dBm */
+	rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
+
+	IWL_DEBUG_STATS(priv, "Rssi %d sig_avg %d noise_diff %d\n",
+			rx_status.signal, rx_stats_sig_avg,
+			rx_stats_noise_diff);
+
+	header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
+
+	network_packet = iwl3945_is_network_packet(priv, header);
+
+	IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Rate:%u\n",
+			      network_packet ? '*' : ' ',
+			      le16_to_cpu(rx_hdr->channel),
+			      rx_status.signal, rx_status.signal,
+			      rx_status.rate_idx);
+
+	iwl_legacy_dbg_log_rx_data_frame(priv, le16_to_cpu(rx_hdr->len),
+						header);
+
+	if (network_packet) {
+		priv->_3945.last_beacon_time =
+			le32_to_cpu(rx_end->beacon_timestamp);
+		priv->_3945.last_tsf = le64_to_cpu(rx_end->timestamp);
+		priv->_3945.last_rx_rssi = rx_status.signal;
+	}
+
+	iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
+}
+
+int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
+				     struct iwl_tx_queue *txq,
+				     dma_addr_t addr, u16 len, u8 reset, u8 pad)
+{
+	int count;
+	struct iwl_queue *q;
+	struct iwl3945_tfd *tfd, *tfd_tmp;
+
+	q = &txq->q;
+	tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
+	tfd = &tfd_tmp[q->write_ptr];
+
+	if (reset)
+		memset(tfd, 0, sizeof(*tfd));
+
+	count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
+
+	if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
+		IWL_ERR(priv, "Error can not send more than %d chunks\n",
+			  NUM_TFD_CHUNKS);
+		return -EINVAL;
+	}
+
+	tfd->tbs[count].addr = cpu_to_le32(addr);
+	tfd->tbs[count].len = cpu_to_le32(len);
+
+	count++;
+
+	tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
+					 TFD_CTL_PAD_SET(pad));
+
+	return 0;
+}
+
+/**
+ * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
+ *
+ * Does NOT advance any indexes
+ */
+void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+	struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
+	int index = txq->q.read_ptr;
+	struct iwl3945_tfd *tfd = &tfd_tmp[index];
+	struct pci_dev *dev = priv->pci_dev;
+	int i;
+	int counter;
+
+	/* sanity check */
+	counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
+	if (counter > NUM_TFD_CHUNKS) {
+		IWL_ERR(priv, "Too many chunks: %i\n", counter);
+		/* @todo issue fatal error, it is quite serious situation */
+		return;
+	}
+
+	/* Unmap tx_cmd */
+	if (counter)
+		pci_unmap_single(dev,
+				dma_unmap_addr(&txq->meta[index], mapping),
+				dma_unmap_len(&txq->meta[index], len),
+				PCI_DMA_TODEVICE);
+
+	/* unmap chunks if any */
+
+	for (i = 1; i < counter; i++)
+		pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
+			 le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
+
+	/* free SKB */
+	if (txq->txb) {
+		struct sk_buff *skb;
+
+		skb = txq->txb[txq->q.read_ptr].skb;
+
+		/* can be called from irqs-disabled context */
+		if (skb) {
+			dev_kfree_skb_any(skb);
+			txq->txb[txq->q.read_ptr].skb = NULL;
+		}
+	}
+}
+
+/**
+ * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
+ *
+*/
+void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv,
+				  struct iwl_device_cmd *cmd,
+				  struct ieee80211_tx_info *info,
+				  struct ieee80211_hdr *hdr,
+				  int sta_id, int tx_id)
+{
+	u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
+	u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT_3945);
+	u16 rate_mask;
+	int rate;
+	u8 rts_retry_limit;
+	u8 data_retry_limit;
+	__le32 tx_flags;
+	__le16 fc = hdr->frame_control;
+	struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
+
+	rate = iwl3945_rates[rate_index].plcp;
+	tx_flags = tx_cmd->tx_flags;
+
+	/* We need to figure out how to get the sta->supp_rates while
+	 * in this running context */
+	rate_mask = IWL_RATES_MASK_3945;
+
+	/* Set retry limit on DATA packets and Probe Responses*/
+	if (ieee80211_is_probe_resp(fc))
+		data_retry_limit = 3;
+	else
+		data_retry_limit = IWL_DEFAULT_TX_RETRY;
+	tx_cmd->data_retry_limit = data_retry_limit;
+
+	if (tx_id >= IWL39_CMD_QUEUE_NUM)
+		rts_retry_limit = 3;
+	else
+		rts_retry_limit = 7;
+
+	if (data_retry_limit < rts_retry_limit)
+		rts_retry_limit = data_retry_limit;
+	tx_cmd->rts_retry_limit = rts_retry_limit;
+
+	tx_cmd->rate = rate;
+	tx_cmd->tx_flags = tx_flags;
+
+	/* OFDM */
+	tx_cmd->supp_rates[0] =
+	   ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
+
+	/* CCK */
+	tx_cmd->supp_rates[1] = (rate_mask & 0xF);
+
+	IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
+		       "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
+		       tx_cmd->rate, le32_to_cpu(tx_cmd->tx_flags),
+		       tx_cmd->supp_rates[1], tx_cmd->supp_rates[0]);
+}
+
+static u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate)
+{
+	unsigned long flags_spin;
+	struct iwl_station_entry *station;
+
+	if (sta_id == IWL_INVALID_STATION)
+		return IWL_INVALID_STATION;
+
+	spin_lock_irqsave(&priv->sta_lock, flags_spin);
+	station = &priv->stations[sta_id];
+
+	station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
+	station->sta.rate_n_flags = cpu_to_le16(tx_rate);
+	station->sta.mode = STA_CONTROL_MODIFY_MSK;
+	iwl_legacy_send_add_sta(priv, &station->sta, CMD_ASYNC);
+	spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
+
+	IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n",
+			sta_id, tx_rate);
+	return sta_id;
+}
+
+static void iwl3945_set_pwr_vmain(struct iwl_priv *priv)
+{
+/*
+ * (for documentation purposes)
+ * to set power to V_AUX, do
+
+		if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
+			iwl_legacy_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
+					APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
+					~APMG_PS_CTRL_MSK_PWR_SRC);
+
+			iwl_poll_bit(priv, CSR_GPIO_IN,
+				     CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
+				     CSR_GPIO_IN_BIT_AUX_POWER, 5000);
+		}
+ */
+
+	iwl_legacy_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
+			APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
+			~APMG_PS_CTRL_MSK_PWR_SRC);
+
+	iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
+		     CSR_GPIO_IN_BIT_AUX_POWER, 5000);	/* uS */
+}
+
+static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
+{
+	iwl_legacy_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->bd_dma);
+	iwl_legacy_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0),
+					rxq->rb_stts_dma);
+	iwl_legacy_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
+	iwl_legacy_write_direct32(priv, FH39_RCSR_CONFIG(0),
+		FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
+		FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
+		FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
+		FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
+		(RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
+		FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
+		(1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
+		FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
+
+	/* fake read to flush all prev I/O */
+	iwl_legacy_read_direct32(priv, FH39_RSSR_CTRL);
+
+	return 0;
+}
+
+static int iwl3945_tx_reset(struct iwl_priv *priv)
+{
+
+	/* bypass mode */
+	iwl_legacy_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
+
+	/* RA 0 is active */
+	iwl_legacy_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
+
+	/* all 6 fifo are active */
+	iwl_legacy_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
+
+	iwl_legacy_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
+	iwl_legacy_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
+	iwl_legacy_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
+	iwl_legacy_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
+
+	iwl_legacy_write_direct32(priv, FH39_TSSR_CBB_BASE,
+			     priv->_3945.shared_phys);
+
+	iwl_legacy_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
+		FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
+		FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
+		FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
+		FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
+		FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
+		FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
+		FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
+
+
+	return 0;
+}
+
+/**
+ * iwl3945_txq_ctx_reset - Reset TX queue context
+ *
+ * Destroys all DMA structures and initialize them again
+ */
+static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
+{
+	int rc;
+	int txq_id, slots_num;
+
+	iwl3945_hw_txq_ctx_free(priv);
+
+	/* allocate tx queue structure */
+	rc = iwl_legacy_alloc_txq_mem(priv);
+	if (rc)
+		return rc;
+
+	/* Tx CMD queue */
+	rc = iwl3945_tx_reset(priv);
+	if (rc)
+		goto error;
+
+	/* Tx queue(s) */
+	for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
+		slots_num = (txq_id == IWL39_CMD_QUEUE_NUM) ?
+				TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+		rc = iwl_legacy_tx_queue_init(priv, &priv->txq[txq_id],
+						slots_num, txq_id);
+		if (rc) {
+			IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
+			goto error;
+		}
+	}
+
+	return rc;
+
+ error:
+	iwl3945_hw_txq_ctx_free(priv);
+	return rc;
+}
+
+
+/*
+ * Start up 3945's basic functionality after it has been reset
+ * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop())
+ * NOTE:  This does not load uCode nor start the embedded processor
+ */
+static int iwl3945_apm_init(struct iwl_priv *priv)
+{
+	int ret = iwl_legacy_apm_init(priv);
+
+	/* Clear APMG (NIC's internal power management) interrupts */
+	iwl_legacy_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
+	iwl_legacy_write_prph(priv, APMG_RTC_INT_STT_REG, 0xFFFFFFFF);
+
+	/* Reset radio chip */
+	iwl_legacy_set_bits_prph(priv, APMG_PS_CTRL_REG,
+				APMG_PS_CTRL_VAL_RESET_REQ);
+	udelay(5);
+	iwl_legacy_clear_bits_prph(priv, APMG_PS_CTRL_REG,
+				APMG_PS_CTRL_VAL_RESET_REQ);
+
+	return ret;
+}
+
+static void iwl3945_nic_config(struct iwl_priv *priv)
+{
+	struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+	unsigned long flags;
+	u8 rev_id = 0;
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	/* Determine HW type */
+	pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
+
+	IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
+
+	if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
+		IWL_DEBUG_INFO(priv, "RTP type\n");
+	else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
+		IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n");
+		iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+			    CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
+	} else {
+		IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n");
+		iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+			    CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
+	}
+
+	if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
+		IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n");
+		iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+			    CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
+	} else
+		IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n");
+
+	if ((eeprom->board_revision & 0xF0) == 0xD0) {
+		IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
+			       eeprom->board_revision);
+		iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+			    CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
+	} else {
+		IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
+			       eeprom->board_revision);
+		iwl_legacy_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
+			      CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
+	}
+
+	if (eeprom->almgor_m_version <= 1) {
+		iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+			    CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
+		IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n",
+			       eeprom->almgor_m_version);
+	} else {
+		IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n",
+			       eeprom->almgor_m_version);
+		iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+			    CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
+	}
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
+		IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n");
+
+	if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
+		IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n");
+}
+
+int iwl3945_hw_nic_init(struct iwl_priv *priv)
+{
+	int rc;
+	unsigned long flags;
+	struct iwl_rx_queue *rxq = &priv->rxq;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	priv->cfg->ops->lib->apm_ops.init(priv);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	iwl3945_set_pwr_vmain(priv);
+
+	priv->cfg->ops->lib->apm_ops.config(priv);
+
+	/* Allocate the RX queue, or reset if it is already allocated */
+	if (!rxq->bd) {
+		rc = iwl_legacy_rx_queue_alloc(priv);
+		if (rc) {
+			IWL_ERR(priv, "Unable to initialize Rx queue\n");
+			return -ENOMEM;
+		}
+	} else
+		iwl3945_rx_queue_reset(priv, rxq);
+
+	iwl3945_rx_replenish(priv);
+
+	iwl3945_rx_init(priv, rxq);
+
+
+	/* Look at using this instead:
+	rxq->need_update = 1;
+	iwl_legacy_rx_queue_update_write_ptr(priv, rxq);
+	*/
+
+	iwl_legacy_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
+
+	rc = iwl3945_txq_ctx_reset(priv);
+	if (rc)
+		return rc;
+
+	set_bit(STATUS_INIT, &priv->status);
+
+	return 0;
+}
+
+/**
+ * iwl3945_hw_txq_ctx_free - Free TXQ Context
+ *
+ * Destroy all TX DMA queues and structures
+ */
+void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
+{
+	int txq_id;
+
+	/* Tx queues */
+	if (priv->txq)
+		for (txq_id = 0; txq_id < priv->hw_params.max_txq_num;
+		     txq_id++)
+			if (txq_id == IWL39_CMD_QUEUE_NUM)
+				iwl_legacy_cmd_queue_free(priv);
+			else
+				iwl_legacy_tx_queue_free(priv, txq_id);
+
+	/* free tx queue structure */
+	iwl_legacy_txq_mem(priv);
+}
+
+void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
+{
+	int txq_id;
+
+	/* stop SCD */
+	iwl_legacy_write_prph(priv, ALM_SCD_MODE_REG, 0);
+	iwl_legacy_write_prph(priv, ALM_SCD_TXFACT_REG, 0);
+
+	/* reset TFD queues */
+	for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
+		iwl_legacy_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
+		iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
+				FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
+				1000);
+	}
+
+	iwl3945_hw_txq_ctx_free(priv);
+}
+
+/**
+ * iwl3945_hw_reg_adjust_power_by_temp
+ * return index delta into power gain settings table
+*/
+static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
+{
+	return (new_reading - old_reading) * (-11) / 100;
+}
+
+/**
+ * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
+ */
+static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
+{
+	return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
+}
+
+int iwl3945_hw_get_temperature(struct iwl_priv *priv)
+{
+	return iwl_read32(priv, CSR_UCODE_DRV_GP2);
+}
+
+/**
+ * iwl3945_hw_reg_txpower_get_temperature
+ * get the current temperature by reading from NIC
+*/
+static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv)
+{
+	struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+	int temperature;
+
+	temperature = iwl3945_hw_get_temperature(priv);
+
+	/* driver's okay range is -260 to +25.
+	 *   human readable okay range is 0 to +285 */
+	IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
+
+	/* handle insane temp reading */
+	if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
+		IWL_ERR(priv, "Error bad temperature value  %d\n", temperature);
+
+		/* if really really hot(?),
+		 *   substitute the 3rd band/group's temp measured at factory */
+		if (priv->last_temperature > 100)
+			temperature = eeprom->groups[2].temperature;
+		else /* else use most recent "sane" value from driver */
+			temperature = priv->last_temperature;
+	}
+
+	return temperature;	/* raw, not "human readable" */
+}
+
+/* Adjust Txpower only if temperature variance is greater than threshold.
+ *
+ * Both are lower than older versions' 9 degrees */
+#define IWL_TEMPERATURE_LIMIT_TIMER   6
+
+/**
+ * iwl3945_is_temp_calib_needed - determines if new calibration is needed
+ *
+ * records new temperature in tx_mgr->temperature.
+ * replaces tx_mgr->last_temperature *only* if calib needed
+ *    (assumes caller will actually do the calibration!). */
+static int iwl3945_is_temp_calib_needed(struct iwl_priv *priv)
+{
+	int temp_diff;
+
+	priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
+	temp_diff = priv->temperature - priv->last_temperature;
+
+	/* get absolute value */
+	if (temp_diff < 0) {
+		IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff);
+		temp_diff = -temp_diff;
+	} else if (temp_diff == 0)
+		IWL_DEBUG_POWER(priv, "Same temp,\n");
+	else
+		IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff);
+
+	/* if we don't need calibration, *don't* update last_temperature */
+	if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
+		IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n");
+		return 0;
+	}
+
+	IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n");
+
+	/* assume that caller will actually do calib ...
+	 *   update the "last temperature" value */
+	priv->last_temperature = priv->temperature;
+	return 1;
+}
+
+#define IWL_MAX_GAIN_ENTRIES 78
+#define IWL_CCK_FROM_OFDM_POWER_DIFF  -5
+#define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
+
+/* radio and DSP power table, each step is 1/2 dB.
+ * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
+static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
+	{
+	 {251, 127},		/* 2.4 GHz, highest power */
+	 {251, 127},
+	 {251, 127},
+	 {251, 127},
+	 {251, 125},
+	 {251, 110},
+	 {251, 105},
+	 {251, 98},
+	 {187, 125},
+	 {187, 115},
+	 {187, 108},
+	 {187, 99},
+	 {243, 119},
+	 {243, 111},
+	 {243, 105},
+	 {243, 97},
+	 {243, 92},
+	 {211, 106},
+	 {211, 100},
+	 {179, 120},
+	 {179, 113},
+	 {179, 107},
+	 {147, 125},
+	 {147, 119},
+	 {147, 112},
+	 {147, 106},
+	 {147, 101},
+	 {147, 97},
+	 {147, 91},
+	 {115, 107},
+	 {235, 121},
+	 {235, 115},
+	 {235, 109},
+	 {203, 127},
+	 {203, 121},
+	 {203, 115},
+	 {203, 108},
+	 {203, 102},
+	 {203, 96},
+	 {203, 92},
+	 {171, 110},
+	 {171, 104},
+	 {171, 98},
+	 {139, 116},
+	 {227, 125},
+	 {227, 119},
+	 {227, 113},
+	 {227, 107},
+	 {227, 101},
+	 {227, 96},
+	 {195, 113},
+	 {195, 106},
+	 {195, 102},
+	 {195, 95},
+	 {163, 113},
+	 {163, 106},
+	 {163, 102},
+	 {163, 95},
+	 {131, 113},
+	 {131, 106},
+	 {131, 102},
+	 {131, 95},
+	 {99, 113},
+	 {99, 106},
+	 {99, 102},
+	 {99, 95},
+	 {67, 113},
+	 {67, 106},
+	 {67, 102},
+	 {67, 95},
+	 {35, 113},
+	 {35, 106},
+	 {35, 102},
+	 {35, 95},
+	 {3, 113},
+	 {3, 106},
+	 {3, 102},
+	 {3, 95} },		/* 2.4 GHz, lowest power */
+	{
+	 {251, 127},		/* 5.x GHz, highest power */
+	 {251, 120},
+	 {251, 114},
+	 {219, 119},
+	 {219, 101},
+	 {187, 113},
+	 {187, 102},
+	 {155, 114},
+	 {155, 103},
+	 {123, 117},
+	 {123, 107},
+	 {123, 99},
+	 {123, 92},
+	 {91, 108},
+	 {59, 125},
+	 {59, 118},
+	 {59, 109},
+	 {59, 102},
+	 {59, 96},
+	 {59, 90},
+	 {27, 104},
+	 {27, 98},
+	 {27, 92},
+	 {115, 118},
+	 {115, 111},
+	 {115, 104},
+	 {83, 126},
+	 {83, 121},
+	 {83, 113},
+	 {83, 105},
+	 {83, 99},
+	 {51, 118},
+	 {51, 111},
+	 {51, 104},
+	 {51, 98},
+	 {19, 116},
+	 {19, 109},
+	 {19, 102},
+	 {19, 98},
+	 {19, 93},
+	 {171, 113},
+	 {171, 107},
+	 {171, 99},
+	 {139, 120},
+	 {139, 113},
+	 {139, 107},
+	 {139, 99},
+	 {107, 120},
+	 {107, 113},
+	 {107, 107},
+	 {107, 99},
+	 {75, 120},
+	 {75, 113},
+	 {75, 107},
+	 {75, 99},
+	 {43, 120},
+	 {43, 113},
+	 {43, 107},
+	 {43, 99},
+	 {11, 120},
+	 {11, 113},
+	 {11, 107},
+	 {11, 99},
+	 {131, 107},
+	 {131, 99},
+	 {99, 120},
+	 {99, 113},
+	 {99, 107},
+	 {99, 99},
+	 {67, 120},
+	 {67, 113},
+	 {67, 107},
+	 {67, 99},
+	 {35, 120},
+	 {35, 113},
+	 {35, 107},
+	 {35, 99},
+	 {3, 120} }		/* 5.x GHz, lowest power */
+};
+
+static inline u8 iwl3945_hw_reg_fix_power_index(int index)
+{
+	if (index < 0)
+		return 0;
+	if (index >= IWL_MAX_GAIN_ENTRIES)
+		return IWL_MAX_GAIN_ENTRIES - 1;
+	return (u8) index;
+}
+
+/* Kick off thermal recalibration check every 60 seconds */
+#define REG_RECALIB_PERIOD (60)
+
+/**
+ * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
+ *
+ * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
+ * or 6 Mbit (OFDM) rates.
+ */
+static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index,
+			       s32 rate_index, const s8 *clip_pwrs,
+			       struct iwl_channel_info *ch_info,
+			       int band_index)
+{
+	struct iwl3945_scan_power_info *scan_power_info;
+	s8 power;
+	u8 power_index;
+
+	scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
+
+	/* use this channel group's 6Mbit clipping/saturation pwr,
+	 *   but cap at regulatory scan power restriction (set during init
+	 *   based on eeprom channel data) for this channel.  */
+	power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
+
+	power = min(power, priv->tx_power_user_lmt);
+	scan_power_info->requested_power = power;
+
+	/* find difference between new scan *power* and current "normal"
+	 *   Tx *power* for 6Mb.  Use this difference (x2) to adjust the
+	 *   current "normal" temperature-compensated Tx power *index* for
+	 *   this rate (1Mb or 6Mb) to yield new temp-compensated scan power
+	 *   *index*. */
+	power_index = ch_info->power_info[rate_index].power_table_index
+	    - (power - ch_info->power_info
+	       [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
+
+	/* store reference index that we use when adjusting *all* scan
+	 *   powers.  So we can accommodate user (all channel) or spectrum
+	 *   management (single channel) power changes "between" temperature
+	 *   feedback compensation procedures.
+	 * don't force fit this reference index into gain table; it may be a
+	 *   negative number.  This will help avoid errors when we're at
+	 *   the lower bounds (highest gains, for warmest temperatures)
+	 *   of the table. */
+
+	/* don't exceed table bounds for "real" setting */
+	power_index = iwl3945_hw_reg_fix_power_index(power_index);
+
+	scan_power_info->power_table_index = power_index;
+	scan_power_info->tpc.tx_gain =
+	    power_gain_table[band_index][power_index].tx_gain;
+	scan_power_info->tpc.dsp_atten =
+	    power_gain_table[band_index][power_index].dsp_atten;
+}
+
+/**
+ * iwl3945_send_tx_power - fill in Tx Power command with gain settings
+ *
+ * Configures power settings for all rates for the current channel,
+ * using values from channel info struct, and send to NIC
+ */
+static int iwl3945_send_tx_power(struct iwl_priv *priv)
+{
+	int rate_idx, i;
+	const struct iwl_channel_info *ch_info = NULL;
+	struct iwl3945_txpowertable_cmd txpower = {
+		.channel = priv->contexts[IWL_RXON_CTX_BSS].active.channel,
+	};
+	u16 chan;
+
+	if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
+		      "TX Power requested while scanning!\n"))
+		return -EAGAIN;
+
+	chan = le16_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.channel);
+
+	txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
+	ch_info = iwl_legacy_get_channel_info(priv, priv->band, chan);
+	if (!ch_info) {
+		IWL_ERR(priv,
+			"Failed to get channel info for channel %d [%d]\n",
+			chan, priv->band);
+		return -EINVAL;
+	}
+
+	if (!iwl_legacy_is_channel_valid(ch_info)) {
+		IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on "
+				"non-Tx channel.\n");
+		return 0;
+	}
+
+	/* fill cmd with power settings for all rates for current channel */
+	/* Fill OFDM rate */
+	for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
+	     rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) {
+
+		txpower.power[i].tpc = ch_info->power_info[i].tpc;
+		txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
+
+		IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
+				le16_to_cpu(txpower.channel),
+				txpower.band,
+				txpower.power[i].tpc.tx_gain,
+				txpower.power[i].tpc.dsp_atten,
+				txpower.power[i].rate);
+	}
+	/* Fill CCK rates */
+	for (rate_idx = IWL_FIRST_CCK_RATE;
+	     rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
+		txpower.power[i].tpc = ch_info->power_info[i].tpc;
+		txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
+
+		IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
+				le16_to_cpu(txpower.channel),
+				txpower.band,
+				txpower.power[i].tpc.tx_gain,
+				txpower.power[i].tpc.dsp_atten,
+				txpower.power[i].rate);
+	}
+
+	return iwl_legacy_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
+				sizeof(struct iwl3945_txpowertable_cmd),
+				&txpower);
+
+}
+
+/**
+ * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
+ * @ch_info: Channel to update.  Uses power_info.requested_power.
+ *
+ * Replace requested_power and base_power_index ch_info fields for
+ * one channel.
+ *
+ * Called if user or spectrum management changes power preferences.
+ * Takes into account h/w and modulation limitations (clip power).
+ *
+ * This does *not* send anything to NIC, just sets up ch_info for one channel.
+ *
+ * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
+ *	 properly fill out the scan powers, and actual h/w gain settings,
+ *	 and send changes to NIC
+ */
+static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv,
+			     struct iwl_channel_info *ch_info)
+{
+	struct iwl3945_channel_power_info *power_info;
+	int power_changed = 0;
+	int i;
+	const s8 *clip_pwrs;
+	int power;
+
+	/* Get this chnlgrp's rate-to-max/clip-powers table */
+	clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
+
+	/* Get this channel's rate-to-current-power settings table */
+	power_info = ch_info->power_info;
+
+	/* update OFDM Txpower settings */
+	for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
+	     i++, ++power_info) {
+		int delta_idx;
+
+		/* limit new power to be no more than h/w capability */
+		power = min(ch_info->curr_txpow, clip_pwrs[i]);
+		if (power == power_info->requested_power)
+			continue;
+
+		/* find difference between old and new requested powers,
+		 *    update base (non-temp-compensated) power index */
+		delta_idx = (power - power_info->requested_power) * 2;
+		power_info->base_power_index -= delta_idx;
+
+		/* save new requested power value */
+		power_info->requested_power = power;
+
+		power_changed = 1;
+	}
+
+	/* update CCK Txpower settings, based on OFDM 12M setting ...
+	 *    ... all CCK power settings for a given channel are the *same*. */
+	if (power_changed) {
+		power =
+		    ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
+		    requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
+
+		/* do all CCK rates' iwl3945_channel_power_info structures */
+		for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
+			power_info->requested_power = power;
+			power_info->base_power_index =
+			    ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
+			    base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
+			++power_info;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
+ *
+ * NOTE: Returned power limit may be less (but not more) than requested,
+ *	 based strictly on regulatory (eeprom and spectrum mgt) limitations
+ *	 (no consideration for h/w clipping limitations).
+ */
+static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info)
+{
+	s8 max_power;
+
+#if 0
+	/* if we're using TGd limits, use lower of TGd or EEPROM */
+	if (ch_info->tgd_data.max_power != 0)
+		max_power = min(ch_info->tgd_data.max_power,
+				ch_info->eeprom.max_power_avg);
+
+	/* else just use EEPROM limits */
+	else
+#endif
+		max_power = ch_info->eeprom.max_power_avg;
+
+	return min(max_power, ch_info->max_power_avg);
+}
+
+/**
+ * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
+ *
+ * Compensate txpower settings of *all* channels for temperature.
+ * This only accounts for the difference between current temperature
+ *   and the factory calibration temperatures, and bases the new settings
+ *   on the channel's base_power_index.
+ *
+ * If RxOn is "associated", this sends the new Txpower to NIC!
+ */
+static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv)
+{
+	struct iwl_channel_info *ch_info = NULL;
+	struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+	int delta_index;
+	const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
+	u8 a_band;
+	u8 rate_index;
+	u8 scan_tbl_index;
+	u8 i;
+	int ref_temp;
+	int temperature = priv->temperature;
+
+	if (priv->disable_tx_power_cal ||
+	    test_bit(STATUS_SCANNING, &priv->status)) {
+		/* do not perform tx power calibration */
+		return 0;
+	}
+	/* set up new Tx power info for each and every channel, 2.4 and 5.x */
+	for (i = 0; i < priv->channel_count; i++) {
+		ch_info = &priv->channel_info[i];
+		a_band = iwl_legacy_is_channel_a_band(ch_info);
+
+		/* Get this chnlgrp's factory calibration temperature */
+		ref_temp = (s16)eeprom->groups[ch_info->group_index].
+		    temperature;
+
+		/* get power index adjustment based on current and factory
+		 * temps */
+		delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
+							      ref_temp);
+
+		/* set tx power value for all rates, OFDM and CCK */
+		for (rate_index = 0; rate_index < IWL_RATE_COUNT_3945;
+		     rate_index++) {
+			int power_idx =
+			    ch_info->power_info[rate_index].base_power_index;
+
+			/* temperature compensate */
+			power_idx += delta_index;
+
+			/* stay within table range */
+			power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
+			ch_info->power_info[rate_index].
+			    power_table_index = (u8) power_idx;
+			ch_info->power_info[rate_index].tpc =
+			    power_gain_table[a_band][power_idx];
+		}
+
+		/* Get this chnlgrp's rate-to-max/clip-powers table */
+		clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
+
+		/* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
+		for (scan_tbl_index = 0;
+		     scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
+			s32 actual_index = (scan_tbl_index == 0) ?
+			    IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
+			iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
+					   actual_index, clip_pwrs,
+					   ch_info, a_band);
+		}
+	}
+
+	/* send Txpower command for current channel to ucode */
+	return priv->cfg->ops->lib->send_tx_power(priv);
+}
+
+int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
+{
+	struct iwl_channel_info *ch_info;
+	s8 max_power;
+	u8 a_band;
+	u8 i;
+
+	if (priv->tx_power_user_lmt == power) {
+		IWL_DEBUG_POWER(priv, "Requested Tx power same as current "
+				"limit: %ddBm.\n", power);
+		return 0;
+	}
+
+	IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power);
+	priv->tx_power_user_lmt = power;
+
+	/* set up new Tx powers for each and every channel, 2.4 and 5.x */
+
+	for (i = 0; i < priv->channel_count; i++) {
+		ch_info = &priv->channel_info[i];
+		a_band = iwl_legacy_is_channel_a_band(ch_info);
+
+		/* find minimum power of all user and regulatory constraints
+		 *    (does not consider h/w clipping limitations) */
+		max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
+		max_power = min(power, max_power);
+		if (max_power != ch_info->curr_txpow) {
+			ch_info->curr_txpow = max_power;
+
+			/* this considers the h/w clipping limitations */
+			iwl3945_hw_reg_set_new_power(priv, ch_info);
+		}
+	}
+
+	/* update txpower settings for all channels,
+	 *   send to NIC if associated. */
+	iwl3945_is_temp_calib_needed(priv);
+	iwl3945_hw_reg_comp_txpower_temp(priv);
+
+	return 0;
+}
+
+static int iwl3945_send_rxon_assoc(struct iwl_priv *priv,
+				   struct iwl_rxon_context *ctx)
+{
+	int rc = 0;
+	struct iwl_rx_packet *pkt;
+	struct iwl3945_rxon_assoc_cmd rxon_assoc;
+	struct iwl_host_cmd cmd = {
+		.id = REPLY_RXON_ASSOC,
+		.len = sizeof(rxon_assoc),
+		.flags = CMD_WANT_SKB,
+		.data = &rxon_assoc,
+	};
+	const struct iwl_legacy_rxon_cmd *rxon1 = &ctx->staging;
+	const struct iwl_legacy_rxon_cmd *rxon2 = &ctx->active;
+
+	if ((rxon1->flags == rxon2->flags) &&
+	    (rxon1->filter_flags == rxon2->filter_flags) &&
+	    (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
+	    (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
+		IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
+		return 0;
+	}
+
+	rxon_assoc.flags = ctx->staging.flags;
+	rxon_assoc.filter_flags = ctx->staging.filter_flags;
+	rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
+	rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
+	rxon_assoc.reserved = 0;
+
+	rc = iwl_legacy_send_cmd_sync(priv, &cmd);
+	if (rc)
+		return rc;
+
+	pkt = (struct iwl_rx_packet *)cmd.reply_page;
+	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
+		IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
+		rc = -EIO;
+	}
+
+	iwl_legacy_free_pages(priv, cmd.reply_page);
+
+	return rc;
+}
+
+/**
+ * iwl3945_commit_rxon - commit staging_rxon to hardware
+ *
+ * The RXON command in staging_rxon is committed to the hardware and
+ * the active_rxon structure is updated with the new data.  This
+ * function correctly transitions out of the RXON_ASSOC_MSK state if
+ * a HW tune is required based on the RXON structure changes.
+ */
+int iwl3945_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
+{
+	/* cast away the const for active_rxon in this function */
+	struct iwl3945_rxon_cmd *active_rxon = (void *)&ctx->active;
+	struct iwl3945_rxon_cmd *staging_rxon = (void *)&ctx->staging;
+	int rc = 0;
+	bool new_assoc = !!(staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK);
+
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+		return -EINVAL;
+
+	if (!iwl_legacy_is_alive(priv))
+		return -1;
+
+	/* always get timestamp with Rx frame */
+	staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
+
+	/* select antenna */
+	staging_rxon->flags &=
+	    ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
+	staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
+
+	rc = iwl_legacy_check_rxon_cmd(priv, ctx);
+	if (rc) {
+		IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
+		return -EINVAL;
+	}
+
+	/* If we don't need to send a full RXON, we can use
+	 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
+	 * and other flags for the current radio configuration. */
+	if (!iwl_legacy_full_rxon_required(priv,
+			&priv->contexts[IWL_RXON_CTX_BSS])) {
+		rc = iwl_legacy_send_rxon_assoc(priv,
+					 &priv->contexts[IWL_RXON_CTX_BSS]);
+		if (rc) {
+			IWL_ERR(priv, "Error setting RXON_ASSOC "
+				  "configuration (%d).\n", rc);
+			return rc;
+		}
+
+		memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
+
+		return 0;
+	}
+
+	/* If we are currently associated and the new config requires
+	 * an RXON_ASSOC and the new config wants the associated mask enabled,
+	 * we must clear the associated from the active configuration
+	 * before we apply the new config */
+	if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS) && new_assoc) {
+		IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
+		active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+
+		/*
+		 * reserved4 and 5 could have been filled by the iwlcore code.
+		 * Let's clear them before pushing to the 3945.
+		 */
+		active_rxon->reserved4 = 0;
+		active_rxon->reserved5 = 0;
+		rc = iwl_legacy_send_cmd_pdu(priv, REPLY_RXON,
+				      sizeof(struct iwl3945_rxon_cmd),
+				      &priv->contexts[IWL_RXON_CTX_BSS].active);
+
+		/* If the mask clearing failed then we set
+		 * active_rxon back to what it was previously */
+		if (rc) {
+			active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
+			IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
+				  "configuration (%d).\n", rc);
+			return rc;
+		}
+		iwl_legacy_clear_ucode_stations(priv,
+					 &priv->contexts[IWL_RXON_CTX_BSS]);
+		iwl_legacy_restore_stations(priv,
+					 &priv->contexts[IWL_RXON_CTX_BSS]);
+	}
+
+	IWL_DEBUG_INFO(priv, "Sending RXON\n"
+		       "* with%s RXON_FILTER_ASSOC_MSK\n"
+		       "* channel = %d\n"
+		       "* bssid = %pM\n",
+		       (new_assoc ? "" : "out"),
+		       le16_to_cpu(staging_rxon->channel),
+		       staging_rxon->bssid_addr);
+
+	/*
+	 * reserved4 and 5 could have been filled by the iwlcore code.
+	 * Let's clear them before pushing to the 3945.
+	 */
+	staging_rxon->reserved4 = 0;
+	staging_rxon->reserved5 = 0;
+
+	iwl_legacy_set_rxon_hwcrypto(priv, ctx, !iwl3945_mod_params.sw_crypto);
+
+	/* Apply the new configuration */
+	rc = iwl_legacy_send_cmd_pdu(priv, REPLY_RXON,
+			      sizeof(struct iwl3945_rxon_cmd),
+			      staging_rxon);
+	if (rc) {
+		IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
+		return rc;
+	}
+
+	memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
+
+	if (!new_assoc) {
+		iwl_legacy_clear_ucode_stations(priv,
+					 &priv->contexts[IWL_RXON_CTX_BSS]);
+		iwl_legacy_restore_stations(priv,
+					&priv->contexts[IWL_RXON_CTX_BSS]);
+	}
+
+	/* If we issue a new RXON command which required a tune then we must
+	 * send a new TXPOWER command or we won't be able to Tx any frames */
+	rc = iwl_legacy_set_tx_power(priv, priv->tx_power_next, true);
+	if (rc) {
+		IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
+		return rc;
+	}
+
+	/* Init the hardware's rate fallback order based on the band */
+	rc = iwl3945_init_hw_rate_table(priv);
+	if (rc) {
+		IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+/**
+ * iwl3945_reg_txpower_periodic -  called when time to check our temperature.
+ *
+ * -- reset periodic timer
+ * -- see if temp has changed enough to warrant re-calibration ... if so:
+ *     -- correct coeffs for temp (can reset temp timer)
+ *     -- save this temp as "last",
+ *     -- send new set of gain settings to NIC
+ * NOTE:  This should continue working, even when we're not associated,
+ *   so we can keep our internal table of scan powers current. */
+void iwl3945_reg_txpower_periodic(struct iwl_priv *priv)
+{
+	/* This will kick in the "brute force"
+	 * iwl3945_hw_reg_comp_txpower_temp() below */
+	if (!iwl3945_is_temp_calib_needed(priv))
+		goto reschedule;
+
+	/* Set up a new set of temp-adjusted TxPowers, send to NIC.
+	 * This is based *only* on current temperature,
+	 * ignoring any previous power measurements */
+	iwl3945_hw_reg_comp_txpower_temp(priv);
+
+ reschedule:
+	queue_delayed_work(priv->workqueue,
+			   &priv->_3945.thermal_periodic, REG_RECALIB_PERIOD * HZ);
+}
+
+static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
+{
+	struct iwl_priv *priv = container_of(work, struct iwl_priv,
+					     _3945.thermal_periodic.work);
+
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+		return;
+
+	mutex_lock(&priv->mutex);
+	iwl3945_reg_txpower_periodic(priv);
+	mutex_unlock(&priv->mutex);
+}
+
+/**
+ * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
+ * 				   for the channel.
+ *
+ * This function is used when initializing channel-info structs.
+ *
+ * NOTE: These channel groups do *NOT* match the bands above!
+ *	 These channel groups are based on factory-tested channels;
+ *	 on A-band, EEPROM's "group frequency" entries represent the top
+ *	 channel in each group 1-4.  Group 5 All B/G channels are in group 0.
+ */
+static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv,
+				       const struct iwl_channel_info *ch_info)
+{
+	struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+	struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
+	u8 group;
+	u16 group_index = 0;	/* based on factory calib frequencies */
+	u8 grp_channel;
+
+	/* Find the group index for the channel ... don't use index 1(?) */
+	if (iwl_legacy_is_channel_a_band(ch_info)) {
+		for (group = 1; group < 5; group++) {
+			grp_channel = ch_grp[group].group_channel;
+			if (ch_info->channel <= grp_channel) {
+				group_index = group;
+				break;
+			}
+		}
+		/* group 4 has a few channels *above* its factory cal freq */
+		if (group == 5)
+			group_index = 4;
+	} else
+		group_index = 0;	/* 2.4 GHz, group 0 */
+
+	IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel,
+			group_index);
+	return group_index;
+}
+
+/**
+ * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
+ *
+ * Interpolate to get nominal (i.e. at factory calibration temperature) index
+ *   into radio/DSP gain settings table for requested power.
+ */
+static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv,
+				       s8 requested_power,
+				       s32 setting_index, s32 *new_index)
+{
+	const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
+	struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+	s32 index0, index1;
+	s32 power = 2 * requested_power;
+	s32 i;
+	const struct iwl3945_eeprom_txpower_sample *samples;
+	s32 gains0, gains1;
+	s32 res;
+	s32 denominator;
+
+	chnl_grp = &eeprom->groups[setting_index];
+	samples = chnl_grp->samples;
+	for (i = 0; i < 5; i++) {
+		if (power == samples[i].power) {
+			*new_index = samples[i].gain_index;
+			return 0;
+		}
+	}
+
+	if (power > samples[1].power) {
+		index0 = 0;
+		index1 = 1;
+	} else if (power > samples[2].power) {
+		index0 = 1;
+		index1 = 2;
+	} else if (power > samples[3].power) {
+		index0 = 2;
+		index1 = 3;
+	} else {
+		index0 = 3;
+		index1 = 4;
+	}
+
+	denominator = (s32) samples[index1].power - (s32) samples[index0].power;
+	if (denominator == 0)
+		return -EINVAL;
+	gains0 = (s32) samples[index0].gain_index * (1 << 19);
+	gains1 = (s32) samples[index1].gain_index * (1 << 19);
+	res = gains0 + (gains1 - gains0) *
+	    ((s32) power - (s32) samples[index0].power) / denominator +
+	    (1 << 18);
+	*new_index = res >> 19;
+	return 0;
+}
+
+static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv)
+{
+	u32 i;
+	s32 rate_index;
+	struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+	const struct iwl3945_eeprom_txpower_group *group;
+
+	IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n");
+
+	for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
+		s8 *clip_pwrs;	/* table of power levels for each rate */
+		s8 satur_pwr;	/* saturation power for each chnl group */
+		group = &eeprom->groups[i];
+
+		/* sanity check on factory saturation power value */
+		if (group->saturation_power < 40) {
+			IWL_WARN(priv, "Error: saturation power is %d, "
+				    "less than minimum expected 40\n",
+				    group->saturation_power);
+			return;
+		}
+
+		/*
+		 * Derive requested power levels for each rate, based on
+		 *   hardware capabilities (saturation power for band).
+		 * Basic value is 3dB down from saturation, with further
+		 *   power reductions for highest 3 data rates.  These
+		 *   backoffs provide headroom for high rate modulation
+		 *   power peaks, without too much distortion (clipping).
+		 */
+		/* we'll fill in this array with h/w max power levels */
+		clip_pwrs = (s8 *) priv->_3945.clip_groups[i].clip_powers;
+
+		/* divide factory saturation power by 2 to find -3dB level */
+		satur_pwr = (s8) (group->saturation_power >> 1);
+
+		/* fill in channel group's nominal powers for each rate */
+		for (rate_index = 0;
+		     rate_index < IWL_RATE_COUNT_3945; rate_index++, clip_pwrs++) {
+			switch (rate_index) {
+			case IWL_RATE_36M_INDEX_TABLE:
+				if (i == 0)	/* B/G */
+					*clip_pwrs = satur_pwr;
+				else	/* A */
+					*clip_pwrs = satur_pwr - 5;
+				break;
+			case IWL_RATE_48M_INDEX_TABLE:
+				if (i == 0)
+					*clip_pwrs = satur_pwr - 7;
+				else
+					*clip_pwrs = satur_pwr - 10;
+				break;
+			case IWL_RATE_54M_INDEX_TABLE:
+				if (i == 0)
+					*clip_pwrs = satur_pwr - 9;
+				else
+					*clip_pwrs = satur_pwr - 12;
+				break;
+			default:
+				*clip_pwrs = satur_pwr;
+				break;
+			}
+		}
+	}
+}
+
+/**
+ * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
+ *
+ * Second pass (during init) to set up priv->channel_info
+ *
+ * Set up Tx-power settings in our channel info database for each VALID
+ * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
+ * and current temperature.
+ *
+ * Since this is based on current temperature (at init time), these values may
+ * not be valid for very long, but it gives us a starting/default point,
+ * and allows us to active (i.e. using Tx) scan.
+ *
+ * This does *not* write values to NIC, just sets up our internal table.
+ */
+int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv)
+{
+	struct iwl_channel_info *ch_info = NULL;
+	struct iwl3945_channel_power_info *pwr_info;
+	struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
+	int delta_index;
+	u8 rate_index;
+	u8 scan_tbl_index;
+	const s8 *clip_pwrs;	/* array of power levels for each rate */
+	u8 gain, dsp_atten;
+	s8 power;
+	u8 pwr_index, base_pwr_index, a_band;
+	u8 i;
+	int temperature;
+
+	/* save temperature reference,
+	 *   so we can determine next time to calibrate */
+	temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
+	priv->last_temperature = temperature;
+
+	iwl3945_hw_reg_init_channel_groups(priv);
+
+	/* initialize Tx power info for each and every channel, 2.4 and 5.x */
+	for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
+	     i++, ch_info++) {
+		a_band = iwl_legacy_is_channel_a_band(ch_info);
+		if (!iwl_legacy_is_channel_valid(ch_info))
+			continue;
+
+		/* find this channel's channel group (*not* "band") index */
+		ch_info->group_index =
+			iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
+
+		/* Get this chnlgrp's rate->max/clip-powers table */
+		clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
+
+		/* calculate power index *adjustment* value according to
+		 *  diff between current temperature and factory temperature */
+		delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
+				eeprom->groups[ch_info->group_index].
+				temperature);
+
+		IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n",
+				ch_info->channel, delta_index, temperature +
+				IWL_TEMP_CONVERT);
+
+		/* set tx power value for all OFDM rates */
+		for (rate_index = 0; rate_index < IWL_OFDM_RATES;
+		     rate_index++) {
+			s32 uninitialized_var(power_idx);
+			int rc;
+
+			/* use channel group's clip-power table,
+			 *   but don't exceed channel's max power */
+			s8 pwr = min(ch_info->max_power_avg,
+				     clip_pwrs[rate_index]);
+
+			pwr_info = &ch_info->power_info[rate_index];
+
+			/* get base (i.e. at factory-measured temperature)
+			 *    power table index for this rate's power */
+			rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
+							 ch_info->group_index,
+							 &power_idx);
+			if (rc) {
+				IWL_ERR(priv, "Invalid power index\n");
+				return rc;
+			}
+			pwr_info->base_power_index = (u8) power_idx;
+
+			/* temperature compensate */
+			power_idx += delta_index;
+
+			/* stay within range of gain table */
+			power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
+
+			/* fill 1 OFDM rate's iwl3945_channel_power_info struct */
+			pwr_info->requested_power = pwr;
+			pwr_info->power_table_index = (u8) power_idx;
+			pwr_info->tpc.tx_gain =
+			    power_gain_table[a_band][power_idx].tx_gain;
+			pwr_info->tpc.dsp_atten =
+			    power_gain_table[a_band][power_idx].dsp_atten;
+		}
+
+		/* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
+		pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
+		power = pwr_info->requested_power +
+			IWL_CCK_FROM_OFDM_POWER_DIFF;
+		pwr_index = pwr_info->power_table_index +
+			IWL_CCK_FROM_OFDM_INDEX_DIFF;
+		base_pwr_index = pwr_info->base_power_index +
+			IWL_CCK_FROM_OFDM_INDEX_DIFF;
+
+		/* stay within table range */
+		pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
+		gain = power_gain_table[a_band][pwr_index].tx_gain;
+		dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
+
+		/* fill each CCK rate's iwl3945_channel_power_info structure
+		 * NOTE:  All CCK-rate Txpwrs are the same for a given chnl!
+		 * NOTE:  CCK rates start at end of OFDM rates! */
+		for (rate_index = 0;
+		     rate_index < IWL_CCK_RATES; rate_index++) {
+			pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
+			pwr_info->requested_power = power;
+			pwr_info->power_table_index = pwr_index;
+			pwr_info->base_power_index = base_pwr_index;
+			pwr_info->tpc.tx_gain = gain;
+			pwr_info->tpc.dsp_atten = dsp_atten;
+		}
+
+		/* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
+		for (scan_tbl_index = 0;
+		     scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
+			s32 actual_index = (scan_tbl_index == 0) ?
+				IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
+			iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
+				actual_index, clip_pwrs, ch_info, a_band);
+		}
+	}
+
+	return 0;
+}
+
+int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
+{
+	int rc;
+
+	iwl_legacy_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
+	rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
+			FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
+	if (rc < 0)
+		IWL_ERR(priv, "Can't stop Rx DMA.\n");
+
+	return 0;
+}
+
+int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+	int txq_id = txq->q.id;
+
+	struct iwl3945_shared *shared_data = priv->_3945.shared_virt;
+
+	shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
+
+	iwl_legacy_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
+	iwl_legacy_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
+
+	iwl_legacy_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
+		FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
+		FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
+		FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
+		FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
+		FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
+
+	/* fake read to flush all prev. writes */
+	iwl_read32(priv, FH39_TSSR_CBB_BASE);
+
+	return 0;
+}
+
+/*
+ * HCMD utils
+ */
+static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
+{
+	switch (cmd_id) {
+	case REPLY_RXON:
+		return sizeof(struct iwl3945_rxon_cmd);
+	case POWER_TABLE_CMD:
+		return sizeof(struct iwl3945_powertable_cmd);
+	default:
+		return len;
+	}
+}
+
+
+static u16 iwl3945_build_addsta_hcmd(const struct iwl_legacy_addsta_cmd *cmd,
+								u8 *data)
+{
+	struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data;
+	addsta->mode = cmd->mode;
+	memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
+	memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
+	addsta->station_flags = cmd->station_flags;
+	addsta->station_flags_msk = cmd->station_flags_msk;
+	addsta->tid_disable_tx = cpu_to_le16(0);
+	addsta->rate_n_flags = cmd->rate_n_flags;
+	addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
+	addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
+	addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
+
+	return (u16)sizeof(struct iwl3945_addsta_cmd);
+}
+
+static int iwl3945_add_bssid_station(struct iwl_priv *priv,
+				     const u8 *addr, u8 *sta_id_r)
+{
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+	int ret;
+	u8 sta_id;
+	unsigned long flags;
+
+	if (sta_id_r)
+		*sta_id_r = IWL_INVALID_STATION;
+
+	ret = iwl_legacy_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
+	if (ret) {
+		IWL_ERR(priv, "Unable to add station %pM\n", addr);
+		return ret;
+	}
+
+	if (sta_id_r)
+		*sta_id_r = sta_id;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+	priv->stations[sta_id].used |= IWL_STA_LOCAL;
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+	return 0;
+}
+static int iwl3945_manage_ibss_station(struct iwl_priv *priv,
+				       struct ieee80211_vif *vif, bool add)
+{
+	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+	int ret;
+
+	if (add) {
+		ret = iwl3945_add_bssid_station(priv, vif->bss_conf.bssid,
+						&vif_priv->ibss_bssid_sta_id);
+		if (ret)
+			return ret;
+
+		iwl3945_sync_sta(priv, vif_priv->ibss_bssid_sta_id,
+				 (priv->band == IEEE80211_BAND_5GHZ) ?
+				 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP);
+		iwl3945_rate_scale_init(priv->hw, vif_priv->ibss_bssid_sta_id);
+
+		return 0;
+	}
+
+	return iwl_legacy_remove_station(priv, vif_priv->ibss_bssid_sta_id,
+				  vif->bss_conf.bssid);
+}
+
+/**
+ * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
+ */
+int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
+{
+	int rc, i, index, prev_index;
+	struct iwl3945_rate_scaling_cmd rate_cmd = {
+		.reserved = {0, 0, 0},
+	};
+	struct iwl3945_rate_scaling_info *table = rate_cmd.table;
+
+	for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
+		index = iwl3945_rates[i].table_rs_index;
+
+		table[index].rate_n_flags =
+			iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
+		table[index].try_cnt = priv->retry_rate;
+		prev_index = iwl3945_get_prev_ieee_rate(i);
+		table[index].next_rate_index =
+				iwl3945_rates[prev_index].table_rs_index;
+	}
+
+	switch (priv->band) {
+	case IEEE80211_BAND_5GHZ:
+		IWL_DEBUG_RATE(priv, "Select A mode rate scale\n");
+		/* If one of the following CCK rates is used,
+		 * have it fall back to the 6M OFDM rate */
+		for (i = IWL_RATE_1M_INDEX_TABLE;
+			i <= IWL_RATE_11M_INDEX_TABLE; i++)
+			table[i].next_rate_index =
+			  iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
+
+		/* Don't fall back to CCK rates */
+		table[IWL_RATE_12M_INDEX_TABLE].next_rate_index =
+						IWL_RATE_9M_INDEX_TABLE;
+
+		/* Don't drop out of OFDM rates */
+		table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
+		    iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
+		break;
+
+	case IEEE80211_BAND_2GHZ:
+		IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n");
+		/* If an OFDM rate is used, have it fall back to the
+		 * 1M CCK rates */
+
+		if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
+		    iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
+
+			index = IWL_FIRST_CCK_RATE;
+			for (i = IWL_RATE_6M_INDEX_TABLE;
+			     i <= IWL_RATE_54M_INDEX_TABLE; i++)
+				table[i].next_rate_index =
+					iwl3945_rates[index].table_rs_index;
+
+			index = IWL_RATE_11M_INDEX_TABLE;
+			/* CCK shouldn't fall back to OFDM... */
+			table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
+		}
+		break;
+
+	default:
+		WARN_ON(1);
+		break;
+	}
+
+	/* Update the rate scaling for control frame Tx */
+	rate_cmd.table_id = 0;
+	rc = iwl_legacy_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
+			      &rate_cmd);
+	if (rc)
+		return rc;
+
+	/* Update the rate scaling for data frame Tx */
+	rate_cmd.table_id = 1;
+	return iwl_legacy_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
+				&rate_cmd);
+}
+
+/* Called when initializing driver */
+int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
+{
+	memset((void *)&priv->hw_params, 0,
+	       sizeof(struct iwl_hw_params));
+
+	priv->_3945.shared_virt =
+		dma_alloc_coherent(&priv->pci_dev->dev,
+				   sizeof(struct iwl3945_shared),
+				   &priv->_3945.shared_phys, GFP_KERNEL);
+	if (!priv->_3945.shared_virt) {
+		IWL_ERR(priv, "failed to allocate pci memory\n");
+		return -ENOMEM;
+	}
+
+	/* Assign number of Usable TX queues */
+	priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
+
+	priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
+	priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_3K);
+	priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
+	priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
+	priv->hw_params.max_stations = IWL3945_STATION_COUNT;
+	priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWL3945_BROADCAST_ID;
+
+	priv->sta_key_max_num = STA_KEY_MAX_NUM;
+
+	priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
+	priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL;
+	priv->hw_params.beacon_time_tsf_bits = IWL3945_EXT_BEACON_TIME_POS;
+
+	return 0;
+}
+
+unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
+			  struct iwl3945_frame *frame, u8 rate)
+{
+	struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
+	unsigned int frame_size;
+
+	tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
+	memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
+
+	tx_beacon_cmd->tx.sta_id =
+		priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id;
+	tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
+
+	frame_size = iwl3945_fill_beacon_frame(priv,
+				tx_beacon_cmd->frame,
+				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);
+
+	tx_beacon_cmd->tx.rate = rate;
+	tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
+				      TX_CMD_FLG_TSF_MSK);
+
+	/* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
+	tx_beacon_cmd->tx.supp_rates[0] =
+		(IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
+
+	tx_beacon_cmd->tx.supp_rates[1] =
+		(IWL_CCK_BASIC_RATES_MASK & 0xF);
+
+	return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
+}
+
+void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv)
+{
+	priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
+	priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
+}
+
+void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv)
+{
+	INIT_DELAYED_WORK(&priv->_3945.thermal_periodic,
+			  iwl3945_bg_reg_txpower_periodic);
+}
+
+void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
+{
+	cancel_delayed_work(&priv->_3945.thermal_periodic);
+}
+
+/* check contents of special bootstrap uCode SRAM */
+static int iwl3945_verify_bsm(struct iwl_priv *priv)
+ {
+	__le32 *image = priv->ucode_boot.v_addr;
+	u32 len = priv->ucode_boot.len;
+	u32 reg;
+	u32 val;
+
+	IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
+
+	/* verify BSM SRAM contents */
+	val = iwl_legacy_read_prph(priv, BSM_WR_DWCOUNT_REG);
+	for (reg = BSM_SRAM_LOWER_BOUND;
+	     reg < BSM_SRAM_LOWER_BOUND + len;
+	     reg += sizeof(u32), image++) {
+		val = iwl_legacy_read_prph(priv, reg);
+		if (val != le32_to_cpu(*image)) {
+			IWL_ERR(priv, "BSM uCode verification failed at "
+				  "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
+				  BSM_SRAM_LOWER_BOUND,
+				  reg - BSM_SRAM_LOWER_BOUND, len,
+				  val, le32_to_cpu(*image));
+			return -EIO;
+		}
+	}
+
+	IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
+
+	return 0;
+}
+
+
+/******************************************************************************
+ *
+ * EEPROM related functions
+ *
+ ******************************************************************************/
+
+/*
+ * Clear the OWNER_MSK, to establish driver (instead of uCode running on
+ * embedded controller) as EEPROM reader; each read is a series of pulses
+ * to/from the EEPROM chip, not a single event, so even reads could conflict
+ * if they weren't arbitrated by some ownership mechanism.  Here, the driver
+ * simply claims ownership, which should be safe when this function is called
+ * (i.e. before loading uCode!).
+ */
+static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
+{
+	_iwl_legacy_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
+	return 0;
+}
+
+
+static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
+{
+	return;
+}
+
+ /**
+  * iwl3945_load_bsm - Load bootstrap instructions
+  *
+  * BSM operation:
+  *
+  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
+  * in special SRAM that does not power down during RFKILL.  When powering back
+  * up after power-saving sleeps (or during initial uCode load), the BSM loads
+  * the bootstrap program into the on-board processor, and starts it.
+  *
+  * The bootstrap program loads (via DMA) instructions and data for a new
+  * program from host DRAM locations indicated by the host driver in the
+  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
+  * automatically.
+  *
+  * When initializing the NIC, the host driver points the BSM to the
+  * "initialize" uCode image.  This uCode sets up some internal data, then
+  * notifies host via "initialize alive" that it is complete.
+  *
+  * The host then replaces the BSM_DRAM_* pointer values to point to the
+  * normal runtime uCode instructions and a backup uCode data cache buffer
+  * (filled initially with starting data values for the on-board processor),
+  * then triggers the "initialize" uCode to load and launch the runtime uCode,
+  * which begins normal operation.
+  *
+  * When doing a power-save shutdown, runtime uCode saves data SRAM into
+  * the backup data cache in DRAM before SRAM is powered down.
+  *
+  * When powering back up, the BSM loads the bootstrap program.  This reloads
+  * the runtime uCode instructions and the backup data cache into SRAM,
+  * and re-launches the runtime uCode from where it left off.
+  */
+static int iwl3945_load_bsm(struct iwl_priv *priv)
+{
+	__le32 *image = priv->ucode_boot.v_addr;
+	u32 len = priv->ucode_boot.len;
+	dma_addr_t pinst;
+	dma_addr_t pdata;
+	u32 inst_len;
+	u32 data_len;
+	int rc;
+	int i;
+	u32 done;
+	u32 reg_offset;
+
+	IWL_DEBUG_INFO(priv, "Begin load bsm\n");
+
+	/* make sure bootstrap program is no larger than BSM's SRAM size */
+	if (len > IWL39_MAX_BSM_SIZE)
+		return -EINVAL;
+
+	/* Tell bootstrap uCode where to find the "Initialize" uCode
+	*   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
+	* NOTE:  iwl3945_initialize_alive_start() will replace these values,
+	*        after the "initialize" uCode has run, to point to
+	*        runtime/protocol instructions and backup data cache. */
+	pinst = priv->ucode_init.p_addr;
+	pdata = priv->ucode_init_data.p_addr;
+	inst_len = priv->ucode_init.len;
+	data_len = priv->ucode_init_data.len;
+
+	iwl_legacy_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
+	iwl_legacy_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
+	iwl_legacy_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
+	iwl_legacy_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
+
+	/* Fill BSM memory with bootstrap instructions */
+	for (reg_offset = BSM_SRAM_LOWER_BOUND;
+	     reg_offset < BSM_SRAM_LOWER_BOUND + len;
+	     reg_offset += sizeof(u32), image++)
+		_iwl_legacy_write_prph(priv, reg_offset,
+					  le32_to_cpu(*image));
+
+	rc = iwl3945_verify_bsm(priv);
+	if (rc)
+		return rc;
+
+	/* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
+	iwl_legacy_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
+	iwl_legacy_write_prph(priv, BSM_WR_MEM_DST_REG,
+				 IWL39_RTC_INST_LOWER_BOUND);
+	iwl_legacy_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
+
+	/* Load bootstrap code into instruction SRAM now,
+	 *   to prepare to load "initialize" uCode */
+	iwl_legacy_write_prph(priv, BSM_WR_CTRL_REG,
+		BSM_WR_CTRL_REG_BIT_START);
+
+	/* Wait for load of bootstrap uCode to finish */
+	for (i = 0; i < 100; i++) {
+		done = iwl_legacy_read_prph(priv, BSM_WR_CTRL_REG);
+		if (!(done & BSM_WR_CTRL_REG_BIT_START))
+			break;
+		udelay(10);
+	}
+	if (i < 100)
+		IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
+	else {
+		IWL_ERR(priv, "BSM write did not complete!\n");
+		return -EIO;
+	}
+
+	/* Enable future boot loads whenever power management unit triggers it
+	 *   (e.g. when powering back up after power-save shutdown) */
+	iwl_legacy_write_prph(priv, BSM_WR_CTRL_REG,
+		BSM_WR_CTRL_REG_BIT_START_EN);
+
+	return 0;
+}
+
+static struct iwl_hcmd_ops iwl3945_hcmd = {
+	.rxon_assoc = iwl3945_send_rxon_assoc,
+	.commit_rxon = iwl3945_commit_rxon,
+};
+
+static struct iwl_lib_ops iwl3945_lib = {
+	.txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
+	.txq_free_tfd = iwl3945_hw_txq_free_tfd,
+	.txq_init = iwl3945_hw_tx_queue_init,
+	.load_ucode = iwl3945_load_bsm,
+	.dump_nic_event_log = iwl3945_dump_nic_event_log,
+	.dump_nic_error_log = iwl3945_dump_nic_error_log,
+	.apm_ops = {
+		.init = iwl3945_apm_init,
+		.config = iwl3945_nic_config,
+	},
+	.eeprom_ops = {
+		.regulatory_bands = {
+			EEPROM_REGULATORY_BAND_1_CHANNELS,
+			EEPROM_REGULATORY_BAND_2_CHANNELS,
+			EEPROM_REGULATORY_BAND_3_CHANNELS,
+			EEPROM_REGULATORY_BAND_4_CHANNELS,
+			EEPROM_REGULATORY_BAND_5_CHANNELS,
+			EEPROM_REGULATORY_BAND_NO_HT40,
+			EEPROM_REGULATORY_BAND_NO_HT40,
+		},
+		.acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
+		.release_semaphore = iwl3945_eeprom_release_semaphore,
+	},
+	.send_tx_power	= iwl3945_send_tx_power,
+	.is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr,
+
+	.debugfs_ops = {
+		.rx_stats_read = iwl3945_ucode_rx_stats_read,
+		.tx_stats_read = iwl3945_ucode_tx_stats_read,
+		.general_stats_read = iwl3945_ucode_general_stats_read,
+	},
+};
+
+static const struct iwl_legacy_ops iwl3945_legacy_ops = {
+	.post_associate = iwl3945_post_associate,
+	.config_ap = iwl3945_config_ap,
+	.manage_ibss_station = iwl3945_manage_ibss_station,
+};
+
+static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
+	.get_hcmd_size = iwl3945_get_hcmd_size,
+	.build_addsta_hcmd = iwl3945_build_addsta_hcmd,
+	.request_scan = iwl3945_request_scan,
+	.post_scan = iwl3945_post_scan,
+};
+
+static const struct iwl_ops iwl3945_ops = {
+	.lib = &iwl3945_lib,
+	.hcmd = &iwl3945_hcmd,
+	.utils = &iwl3945_hcmd_utils,
+	.led = &iwl3945_led_ops,
+	.legacy = &iwl3945_legacy_ops,
+	.ieee80211_ops = &iwl3945_hw_ops,
+};
+
+static struct iwl_base_params iwl3945_base_params = {
+	.eeprom_size = IWL3945_EEPROM_IMG_SIZE,
+	.num_of_queues = IWL39_NUM_QUEUES,
+	.pll_cfg_val = CSR39_ANA_PLL_CFG_VAL,
+	.set_l0s = false,
+	.use_bsm = true,
+	.led_compensation = 64,
+	.plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
+	.wd_timeout = IWL_DEF_WD_TIMEOUT,
+	.max_event_log_size = 512,
+};
+
+static struct iwl_cfg iwl3945_bg_cfg = {
+	.name = "3945BG",
+	.fw_name_pre = IWL3945_FW_PRE,
+	.ucode_api_max = IWL3945_UCODE_API_MAX,
+	.ucode_api_min = IWL3945_UCODE_API_MIN,
+	.sku = IWL_SKU_G,
+	.eeprom_ver = EEPROM_3945_EEPROM_VERSION,
+	.ops = &iwl3945_ops,
+	.mod_params = &iwl3945_mod_params,
+	.base_params = &iwl3945_base_params,
+	.led_mode = IWL_LED_BLINK,
+};
+
+static struct iwl_cfg iwl3945_abg_cfg = {
+	.name = "3945ABG",
+	.fw_name_pre = IWL3945_FW_PRE,
+	.ucode_api_max = IWL3945_UCODE_API_MAX,
+	.ucode_api_min = IWL3945_UCODE_API_MIN,
+	.sku = IWL_SKU_A|IWL_SKU_G,
+	.eeprom_ver = EEPROM_3945_EEPROM_VERSION,
+	.ops = &iwl3945_ops,
+	.mod_params = &iwl3945_mod_params,
+	.base_params = &iwl3945_base_params,
+	.led_mode = IWL_LED_BLINK,
+};
+
+DEFINE_PCI_DEVICE_TABLE(iwl3945_hw_card_ids) = {
+	{IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
+	{IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
+	{IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
+	{IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
+	{IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
+	{IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
+	{0}
+};
+
+MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);