Add HostAP wireless driver.

Includes minor cleanups from Adrian Bunk <bunk@stusta.de>.

1 files changed, 3631 insertions, 0 deletions

diff --git a/drivers/net/wireless/hostap/hostap_hw.c b/drivers/net/wireless/hostap/hostap_hw.c
new file mode 100644
index 00000000000..039ef7f61be
--- /dev/null
+++ b/drivers/net/wireless/hostap/hostap_hw.c
@@ -0,0 +1,3631 @@
+/*
+ * Host AP (software wireless LAN access point) driver for
+ * Intersil Prism2/2.5/3.
+ *
+ * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
+ * <jkmaline@cc.hut.fi>
+ * Copyright (c) 2002-2004, Jouni Malinen <jkmaline@cc.hut.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation. See README and COPYING for
+ * more details.
+ *
+ * FIX:
+ * - there is currently no way of associating TX packets to correct wds device
+ *   when TX Exc/OK event occurs, so all tx_packets and some
+ *   tx_errors/tx_dropped are added to the main netdevice; using sw_support
+ *   field in txdesc might be used to fix this (using Alloc event to increment
+ *   tx_packets would need some further info in txfid table)
+ *
+ * Buffer Access Path (BAP) usage:
+ *   Prism2 cards have two separate BAPs for accessing the card memory. These
+ *   should allow concurrent access to two different frames and the driver
+ *   previously used BAP0 for sending data and BAP1 for receiving data.
+ *   However, there seems to be number of issues with concurrent access and at
+ *   least one know hardware bug in using BAP0 and BAP1 concurrently with PCI
+ *   Prism2.5. Therefore, the driver now only uses BAP0 for moving data between
+ *   host and card memories. BAP0 accesses are protected with local->baplock
+ *   (spin_lock_bh) to prevent concurrent use.
+ */
+
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#include <asm/delay.h>
+#include <asm/uaccess.h>
+
+#include <linux/slab.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/if_arp.h>
+#include <linux/delay.h>
+#include <linux/random.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <linux/rtnetlink.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <asm/irq.h>
+
+
+#include "hostap_80211.h"
+#include "hostap.h"
+#include "hostap_ap.h"
+
+
+/* #define final_version */
+
+static int mtu = 1500;
+module_param(mtu, int, 0444);
+MODULE_PARM_DESC(mtu, "Maximum transfer unit");
+
+static int channel[MAX_PARM_DEVICES] = { 3, DEF_INTS };
+module_param_array(channel, int, NULL, 0444);
+MODULE_PARM_DESC(channel, "Initial channel");
+
+static char essid[33] = "test";
+module_param_string(essid, essid, sizeof(essid), 0444);
+MODULE_PARM_DESC(essid, "Host AP's ESSID");
+
+static int iw_mode[MAX_PARM_DEVICES] = { IW_MODE_MASTER, DEF_INTS };
+module_param_array(iw_mode, int, NULL, 0444);
+MODULE_PARM_DESC(iw_mode, "Initial operation mode");
+
+static int beacon_int[MAX_PARM_DEVICES] = { 100, DEF_INTS };
+module_param_array(beacon_int, int, NULL, 0444);
+MODULE_PARM_DESC(beacon_int, "Beacon interval (1 = 1024 usec)");
+
+static int dtim_period[MAX_PARM_DEVICES] = { 1, DEF_INTS };
+module_param_array(dtim_period, int, NULL, 0444);
+MODULE_PARM_DESC(dtim_period, "DTIM period");
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+static int bus_master_threshold_rx[MAX_PARM_DEVICES] = { 100, DEF_INTS };
+module_param_array(bus_master_threshold_rx, int, NULL, 0444);
+MODULE_PARM_DESC(bus_master_threshold_rx, "Packet length threshold for using "
+		 "PCI bus master on RX");
+
+static int bus_master_threshold_tx[MAX_PARM_DEVICES] = { 100, DEF_INTS };
+module_param_array(bus_master_threshold_tx, int, NULL, 0444);
+MODULE_PARM_DESC(bus_master_threshold_tx, "Packet length threshold for using "
+		 "PCI bus master on TX");
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+
+static char dev_template[16] = "wlan%d";
+module_param_string(dev_template, dev_template, sizeof(dev_template), 0444);
+MODULE_PARM_DESC(dev_template, "Prefix for network device name (default: "
+		 "wlan%d)");
+
+#ifdef final_version
+#define EXTRA_EVENTS_WTERR 0
+#else
+/* check WTERR events (Wait Time-out) in development versions */
+#define EXTRA_EVENTS_WTERR HFA384X_EV_WTERR
+#endif
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+#define EXTRA_EVENTS_BUS_MASTER (HFA384X_EV_PCI_M0 | HFA384X_EV_PCI_M1)
+#else
+#define EXTRA_EVENTS_BUS_MASTER 0
+#endif
+
+/* Events that will be using BAP0 */
+#define HFA384X_BAP0_EVENTS \
+	(HFA384X_EV_TXEXC | HFA384X_EV_RX | HFA384X_EV_INFO | HFA384X_EV_TX)
+
+/* event mask, i.e., events that will result in an interrupt */
+#define HFA384X_EVENT_MASK \
+	(HFA384X_BAP0_EVENTS | HFA384X_EV_ALLOC | HFA384X_EV_INFDROP | \
+	HFA384X_EV_CMD | HFA384X_EV_TICK | \
+	EXTRA_EVENTS_WTERR | EXTRA_EVENTS_BUS_MASTER)
+
+/* Default TX control flags: use 802.11 headers and request interrupt for
+ * failed transmits. Frames that request ACK callback, will add
+ * _TX_OK flag and _ALT_RTRY flag may be used to select different retry policy.
+ */
+#define HFA384X_TX_CTRL_FLAGS \
+	(HFA384X_TX_CTRL_802_11 | HFA384X_TX_CTRL_TX_EX)
+
+
+/* ca. 1 usec */
+#define HFA384X_CMD_BUSY_TIMEOUT 5000
+#define HFA384X_BAP_BUSY_TIMEOUT 50000
+
+/* ca. 10 usec */
+#define HFA384X_CMD_COMPL_TIMEOUT 20000
+#define HFA384X_DL_COMPL_TIMEOUT 1000000
+
+/* Wait times for initialization; yield to other processes to avoid busy
+ * waiting for long time. */
+#define HFA384X_INIT_TIMEOUT (HZ / 2) /* 500 ms */
+#define HFA384X_ALLOC_COMPL_TIMEOUT (HZ / 20) /* 50 ms */
+
+
+static void prism2_hw_reset(struct net_device *dev);
+static void prism2_check_sta_fw_version(local_info_t *local);
+
+#ifdef PRISM2_DOWNLOAD_SUPPORT
+/* hostap_download.c */
+static int prism2_download_aux_dump(struct net_device *dev,
+				    unsigned int addr, int len, u8 *buf);
+static u8 * prism2_read_pda(struct net_device *dev);
+static int prism2_download(local_info_t *local,
+			   struct prism2_download_param *param);
+static void prism2_download_free_data(struct prism2_download_data *dl);
+static int prism2_download_volatile(local_info_t *local,
+				    struct prism2_download_data *param);
+static int prism2_download_genesis(local_info_t *local,
+				   struct prism2_download_data *param);
+static int prism2_get_ram_size(local_info_t *local);
+#endif /* PRISM2_DOWNLOAD_SUPPORT */
+
+
+
+
+#ifndef final_version
+/* magic value written to SWSUPPORT0 reg. for detecting whether card is still
+ * present */
+#define HFA384X_MAGIC 0x8A32
+#endif
+
+
+static u16 hfa384x_read_reg(struct net_device *dev, u16 reg)
+{
+	return HFA384X_INW(reg);
+}
+
+
+static void hfa384x_read_regs(struct net_device *dev,
+			      struct hfa384x_regs *regs)
+{
+	regs->cmd = HFA384X_INW(HFA384X_CMD_OFF);
+	regs->evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
+	regs->offset0 = HFA384X_INW(HFA384X_OFFSET0_OFF);
+	regs->offset1 = HFA384X_INW(HFA384X_OFFSET1_OFF);
+	regs->swsupport0 = HFA384X_INW(HFA384X_SWSUPPORT0_OFF);
+}
+
+
+/**
+ * __hostap_cmd_queue_free - Free Prism2 command queue entry (private)
+ * @local: pointer to private Host AP driver data
+ * @entry: Prism2 command queue entry to be freed
+ * @del_req: request the entry to be removed
+ *
+ * Internal helper function for freeing Prism2 command queue entries.
+ * Caller must have acquired local->cmdlock before calling this function.
+ */
+static inline void __hostap_cmd_queue_free(local_info_t *local,
+					   struct hostap_cmd_queue *entry,
+					   int del_req)
+{
+	if (del_req) {
+		entry->del_req = 1;
+		if (!list_empty(&entry->list)) {
+			list_del_init(&entry->list);
+			local->cmd_queue_len--;
+		}
+	}
+
+	if (atomic_dec_and_test(&entry->usecnt) && entry->del_req)
+		kfree(entry);
+}
+
+
+/**
+ * hostap_cmd_queue_free - Free Prism2 command queue entry
+ * @local: pointer to private Host AP driver data
+ * @entry: Prism2 command queue entry to be freed
+ * @del_req: request the entry to be removed
+ *
+ * Free a Prism2 command queue entry.
+ */
+static inline void hostap_cmd_queue_free(local_info_t *local,
+					 struct hostap_cmd_queue *entry,
+					 int del_req)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&local->cmdlock, flags);
+	__hostap_cmd_queue_free(local, entry, del_req);
+	spin_unlock_irqrestore(&local->cmdlock, flags);
+}
+
+
+/**
+ * prism2_clear_cmd_queue - Free all pending Prism2 command queue entries
+ * @local: pointer to private Host AP driver data
+ */
+static void prism2_clear_cmd_queue(local_info_t *local)
+{
+	struct list_head *ptr, *n;
+	unsigned long flags;
+	struct hostap_cmd_queue *entry;
+
+	spin_lock_irqsave(&local->cmdlock, flags);
+	list_for_each_safe(ptr, n, &local->cmd_queue) {
+		entry = list_entry(ptr, struct hostap_cmd_queue, list);
+		atomic_inc(&entry->usecnt);
+		printk(KERN_DEBUG "%s: removed pending cmd_queue entry "
+		       "(type=%d, cmd=0x%04x, param0=0x%04x)\n",
+		       local->dev->name, entry->type, entry->cmd,
+		       entry->param0);
+		__hostap_cmd_queue_free(local, entry, 1);
+	}
+	if (local->cmd_queue_len) {
+		/* This should not happen; print debug message and clear
+		 * queue length. */
+		printk(KERN_DEBUG "%s: cmd_queue_len (%d) not zero after "
+		       "flush\n", local->dev->name, local->cmd_queue_len);
+		local->cmd_queue_len = 0;
+	}
+	spin_unlock_irqrestore(&local->cmdlock, flags);
+}
+
+
+/**
+ * hfa384x_cmd_issue - Issue a Prism2 command to the hardware
+ * @dev: pointer to net_device
+ * @entry: Prism2 command queue entry to be issued
+ */
+static inline int hfa384x_cmd_issue(struct net_device *dev,
+				    struct hostap_cmd_queue *entry)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int tries;
+	u16 reg;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (local->func->card_present && !local->func->card_present(local))
+		return -ENODEV;
+
+	if (entry->issued) {
+		printk(KERN_DEBUG "%s: driver bug - re-issuing command @%p\n",
+		       dev->name, entry);
+	}
+
+	/* wait until busy bit is clear; this should always be clear since the
+	 * commands are serialized */
+	tries = HFA384X_CMD_BUSY_TIMEOUT;
+	while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
+		tries--;
+		udelay(1);
+	}
+#ifndef final_version
+	if (tries != HFA384X_CMD_BUSY_TIMEOUT) {
+		prism2_io_debug_error(dev, 1);
+		printk(KERN_DEBUG "%s: hfa384x_cmd_issue: cmd reg was busy "
+		       "for %d usec\n", dev->name,
+		       HFA384X_CMD_BUSY_TIMEOUT - tries);
+	}
+#endif
+	if (tries == 0) {
+		reg = HFA384X_INW(HFA384X_CMD_OFF);
+		prism2_io_debug_error(dev, 2);
+		printk(KERN_DEBUG "%s: hfa384x_cmd_issue - timeout - "
+		       "reg=0x%04x\n", dev->name, reg);
+		return -ETIMEDOUT;
+	}
+
+	/* write command */
+	spin_lock_irqsave(&local->cmdlock, flags);
+	HFA384X_OUTW(entry->param0, HFA384X_PARAM0_OFF);
+	HFA384X_OUTW(entry->param1, HFA384X_PARAM1_OFF);
+	HFA384X_OUTW(entry->cmd, HFA384X_CMD_OFF);
+	entry->issued = 1;
+	spin_unlock_irqrestore(&local->cmdlock, flags);
+
+	return 0;
+}
+
+
+/**
+ * hfa384x_cmd - Issue a Prism2 command and wait (sleep) for completion
+ * @dev: pointer to net_device
+ * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
+ * @param0: value for Param0 register
+ * @param1: value for Param1 register (pointer; %NULL if not used)
+ * @resp0: pointer for Resp0 data or %NULL if Resp0 is not needed
+ *
+ * Issue given command (possibly after waiting in command queue) and sleep
+ * until the command is completed (or timed out or interrupted). This can be
+ * called only from user process context.
+ */
+static int hfa384x_cmd(struct net_device *dev, u16 cmd, u16 param0,
+		       u16 *param1, u16 *resp0)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int err, res, issue, issued = 0;
+	unsigned long flags;
+	struct hostap_cmd_queue *entry;
+	DECLARE_WAITQUEUE(wait, current);
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (in_interrupt()) {
+		printk(KERN_DEBUG "%s: hfa384x_cmd called from interrupt "
+		       "context\n", dev->name);
+		return -1;
+	}
+
+	if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN) {
+		printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
+		       dev->name);
+		return -1;
+	}
+
+	if (signal_pending(current))
+		return -EINTR;
+
+	entry = (struct hostap_cmd_queue *)
+		kmalloc(sizeof(*entry), GFP_ATOMIC);
+	if (entry == NULL) {
+		printk(KERN_DEBUG "%s: hfa384x_cmd - kmalloc failed\n",
+		       dev->name);
+		return -ENOMEM;
+	}
+	memset(entry, 0, sizeof(*entry));
+	atomic_set(&entry->usecnt, 1);
+	entry->type = CMD_SLEEP;
+	entry->cmd = cmd;
+	entry->param0 = param0;
+	if (param1)
+		entry->param1 = *param1;
+	init_waitqueue_head(&entry->compl);
+
+	/* prepare to wait for command completion event, but do not sleep yet
+	 */
+	add_wait_queue(&entry->compl, &wait);
+	set_current_state(TASK_INTERRUPTIBLE);
+
+	spin_lock_irqsave(&local->cmdlock, flags);
+	issue = list_empty(&local->cmd_queue);
+	if (issue)
+		entry->issuing = 1;
+	list_add_tail(&entry->list, &local->cmd_queue);
+	local->cmd_queue_len++;
+	spin_unlock_irqrestore(&local->cmdlock, flags);
+
+	err = 0;
+	if (!issue)
+		goto wait_completion;
+
+	if (signal_pending(current))
+		err = -EINTR;
+
+	if (!err) {
+		if (hfa384x_cmd_issue(dev, entry))
+			err = -ETIMEDOUT;
+		else
+			issued = 1;
+	}
+
+ wait_completion:
+	if (!err && entry->type != CMD_COMPLETED) {
+		/* sleep until command is completed or timed out */
+		res = schedule_timeout(2 * HZ);
+	} else
+		res = -1;
+
+	if (!err && signal_pending(current))
+		err = -EINTR;
+
+	if (err && issued) {
+		/* the command was issued, so a CmdCompl event should occur
+		 * soon; however, there's a pending signal and
+		 * schedule_timeout() would be interrupted; wait a short period
+		 * of time to avoid removing entry from the list before
+		 * CmdCompl event */
+		udelay(300);
+	}
+
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&entry->compl, &wait);
+
+	/* If entry->list is still in the list, it must be removed
+	 * first and in this case prism2_cmd_ev() does not yet have
+	 * local reference to it, and the data can be kfree()'d
+	 * here. If the command completion event is still generated,
+	 * it will be assigned to next (possibly) pending command, but
+	 * the driver will reset the card anyway due to timeout
+	 *
+	 * If the entry is not in the list prism2_cmd_ev() has a local
+	 * reference to it, but keeps cmdlock as long as the data is
+	 * needed, so the data can be kfree()'d here. */
+
+	/* FIX: if the entry->list is in the list, it has not been completed
+	 * yet, so removing it here is somewhat wrong.. this could cause
+	 * references to freed memory and next list_del() causing NULL pointer
+	 * dereference.. it would probably be better to leave the entry in the
+	 * list and the list should be emptied during hw reset */
+
+	spin_lock_irqsave(&local->cmdlock, flags);
+	if (!list_empty(&entry->list)) {
+		printk(KERN_DEBUG "%s: hfa384x_cmd: entry still in list? "
+		       "(entry=%p, type=%d, res=%d)\n", dev->name, entry,
+		       entry->type, res);
+		list_del_init(&entry->list);
+		local->cmd_queue_len--;
+	}
+	spin_unlock_irqrestore(&local->cmdlock, flags);
+
+	if (err) {
+		printk(KERN_DEBUG "%s: hfa384x_cmd: interrupted; err=%d\n",
+		       dev->name, err);
+		res = err;
+		goto done;
+	}
+
+	if (entry->type != CMD_COMPLETED) {
+		u16 reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
+		printk(KERN_DEBUG "%s: hfa384x_cmd: command was not "
+		       "completed (res=%d, entry=%p, type=%d, cmd=0x%04x, "
+		       "param0=0x%04x, EVSTAT=%04x INTEN=%04x)\n", dev->name,
+		       res, entry, entry->type, entry->cmd, entry->param0, reg,
+		       HFA384X_INW(HFA384X_INTEN_OFF));
+		if (reg & HFA384X_EV_CMD) {
+			/* Command completion event is pending, but the
+			 * interrupt was not delivered - probably an issue
+			 * with pcmcia-cs configuration. */
+			printk(KERN_WARNING "%s: interrupt delivery does not "
+			       "seem to work\n", dev->name);
+		}
+		prism2_io_debug_error(dev, 3);
+		res = -ETIMEDOUT;
+		goto done;
+	}
+
+	if (resp0 != NULL)
+		*resp0 = entry->resp0;
+#ifndef final_version
+	if (entry->res) {
+		printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x, "
+		       "resp0=0x%04x\n",
+		       dev->name, cmd, entry->res, entry->resp0);
+	}
+#endif /* final_version */
+
+	res = entry->res;
+ done:
+	hostap_cmd_queue_free(local, entry, 1);
+	return res;
+}
+
+
+/**
+ * hfa384x_cmd_callback - Issue a Prism2 command; callback when completed
+ * @dev: pointer to net_device
+ * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
+ * @param0: value for Param0 register
+ * @callback: command completion callback function (%NULL = no callback)
+ * @context: data pointer to be given to callback function
+ *
+ * Issue given command (possibly after waiting in command queue) and use
+ * callback function to indicate command completion. This can be called both
+ * from user and interrupt context. The callback function will be called in
+ * hardware IRQ context. It can be %NULL, when no function is called when
+ * command is completed.
+ */
+static int hfa384x_cmd_callback(struct net_device *dev, u16 cmd, u16 param0,
+				void (*callback)(struct net_device *dev,
+						 void *context, u16 resp0,
+						 u16 status),
+				void *context)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int issue, ret;
+	unsigned long flags;
+	struct hostap_cmd_queue *entry;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (local->cmd_queue_len >= HOSTAP_CMD_QUEUE_MAX_LEN + 2) {
+		printk(KERN_DEBUG "%s: hfa384x_cmd: cmd_queue full\n",
+		       dev->name);
+		return -1;
+	}
+
+	entry = (struct hostap_cmd_queue *)
+		kmalloc(sizeof(*entry), GFP_ATOMIC);
+	if (entry == NULL) {
+		printk(KERN_DEBUG "%s: hfa384x_cmd_callback - kmalloc "
+		       "failed\n", dev->name);
+		return -ENOMEM;
+	}
+	memset(entry, 0, sizeof(*entry));
+	atomic_set(&entry->usecnt, 1);
+	entry->type = CMD_CALLBACK;
+	entry->cmd = cmd;
+	entry->param0 = param0;
+	entry->callback = callback;
+	entry->context = context;
+
+	spin_lock_irqsave(&local->cmdlock, flags);
+	issue = list_empty(&local->cmd_queue);
+	if (issue)
+		entry->issuing = 1;
+	list_add_tail(&entry->list, &local->cmd_queue);
+	local->cmd_queue_len++;
+	spin_unlock_irqrestore(&local->cmdlock, flags);
+
+	if (issue && hfa384x_cmd_issue(dev, entry))
+		ret = -ETIMEDOUT;
+	else
+		ret = 0;
+
+	hostap_cmd_queue_free(local, entry, ret);
+
+	return ret;
+}
+
+
+/**
+ * __hfa384x_cmd_no_wait - Issue a Prism2 command (private)
+ * @dev: pointer to net_device
+ * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
+ * @param0: value for Param0 register
+ * @io_debug_num: I/O debug error number
+ *
+ * Shared helper function for hfa384x_cmd_wait() and hfa384x_cmd_no_wait().
+ */
+static int __hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd, u16 param0,
+				 int io_debug_num)
+{
+	int tries;
+	u16 reg;
+
+	/* wait until busy bit is clear; this should always be clear since the
+	 * commands are serialized */
+	tries = HFA384X_CMD_BUSY_TIMEOUT;
+	while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
+		tries--;
+		udelay(1);
+	}
+	if (tries == 0) {
+		reg = HFA384X_INW(HFA384X_CMD_OFF);
+		prism2_io_debug_error(dev, io_debug_num);
+		printk(KERN_DEBUG "%s: __hfa384x_cmd_no_wait(%d) - timeout - "
+		       "reg=0x%04x\n", dev->name, io_debug_num, reg);
+		return -ETIMEDOUT;
+	}
+
+	/* write command */
+	HFA384X_OUTW(param0, HFA384X_PARAM0_OFF);
+	HFA384X_OUTW(cmd, HFA384X_CMD_OFF);
+
+	return 0;
+}
+
+
+/**
+ * hfa384x_cmd_wait - Issue a Prism2 command and busy wait for completion
+ * @dev: pointer to net_device
+ * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
+ * @param0: value for Param0 register
+ */
+static int hfa384x_cmd_wait(struct net_device *dev, u16 cmd, u16 param0)
+{
+	int res, tries;
+	u16 reg;
+
+	res = __hfa384x_cmd_no_wait(dev, cmd, param0, 4);
+	if (res)
+		return res;
+
+        /* wait for command completion */
+	if ((cmd & HFA384X_CMDCODE_MASK) == HFA384X_CMDCODE_DOWNLOAD)
+		tries = HFA384X_DL_COMPL_TIMEOUT;
+	else
+		tries = HFA384X_CMD_COMPL_TIMEOUT;
+
+        while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
+               tries > 0) {
+                tries--;
+                udelay(10);
+        }
+        if (tries == 0) {
+                reg = HFA384X_INW(HFA384X_EVSTAT_OFF);
+		prism2_io_debug_error(dev, 5);
+                printk(KERN_DEBUG "%s: hfa384x_cmd_wait - timeout2 - "
+		       "reg=0x%04x\n", dev->name, reg);
+                return -ETIMEDOUT;
+        }
+
+        res = (HFA384X_INW(HFA384X_STATUS_OFF) &
+               (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) | BIT(9) |
+                BIT(8))) >> 8;
+#ifndef final_version
+	if (res) {
+		printk(KERN_DEBUG "%s: CMD=0x%04x => res=0x%02x\n",
+		       dev->name, cmd, res);
+	}
+#endif
+
+	HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
+
+	return res;
+}
+
+
+/**
+ * hfa384x_cmd_no_wait - Issue a Prism2 command; do not wait for completion
+ * @dev: pointer to net_device
+ * @cmd: Prism2 command code (HFA384X_CMD_CODE_*)
+ * @param0: value for Param0 register
+ */
+static inline int hfa384x_cmd_no_wait(struct net_device *dev, u16 cmd,
+				      u16 param0)
+{
+	return __hfa384x_cmd_no_wait(dev, cmd, param0, 6);
+}
+
+
+/**
+ * prism2_cmd_ev - Prism2 command completion event handler
+ * @dev: pointer to net_device
+ *
+ * Interrupt handler for command completion events. Called by the main
+ * interrupt handler in hardware IRQ context. Read Resp0 and status registers
+ * from the hardware and ACK the event. Depending on the issued command type
+ * either wake up the sleeping process that is waiting for command completion
+ * or call the callback function. Issue the next command, if one is pending.
+ */
+static void prism2_cmd_ev(struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	struct hostap_cmd_queue *entry = NULL;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock(&local->cmdlock);
+	if (!list_empty(&local->cmd_queue)) {
+		entry = list_entry(local->cmd_queue.next,
+				   struct hostap_cmd_queue, list);
+		atomic_inc(&entry->usecnt);
+		list_del_init(&entry->list);
+		local->cmd_queue_len--;
+
+		if (!entry->issued) {
+			printk(KERN_DEBUG "%s: Command completion event, but "
+			       "cmd not issued\n", dev->name);
+			__hostap_cmd_queue_free(local, entry, 1);
+			entry = NULL;
+		}
+	}
+	spin_unlock(&local->cmdlock);
+
+	if (!entry) {
+		HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
+		printk(KERN_DEBUG "%s: Command completion event, but no "
+		       "pending commands\n", dev->name);
+		return;
+	}
+
+	entry->resp0 = HFA384X_INW(HFA384X_RESP0_OFF);
+	entry->res = (HFA384X_INW(HFA384X_STATUS_OFF) &
+		      (BIT(14) | BIT(13) | BIT(12) | BIT(11) | BIT(10) |
+		       BIT(9) | BIT(8))) >> 8;
+	HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
+
+	/* TODO: rest of the CmdEv handling could be moved to tasklet */
+	if (entry->type == CMD_SLEEP) {
+		entry->type = CMD_COMPLETED;
+		wake_up_interruptible(&entry->compl);
+	} else if (entry->type == CMD_CALLBACK) {
+		if (entry->callback)
+			entry->callback(dev, entry->context, entry->resp0,
+					entry->res);
+	} else {
+		printk(KERN_DEBUG "%s: Invalid command completion type %d\n",
+		       dev->name, entry->type);
+	}
+	hostap_cmd_queue_free(local, entry, 1);
+
+	/* issue next command, if pending */
+	entry = NULL;
+	spin_lock(&local->cmdlock);
+	if (!list_empty(&local->cmd_queue)) {
+		entry = list_entry(local->cmd_queue.next,
+				   struct hostap_cmd_queue, list);
+		if (entry->issuing) {
+			/* hfa384x_cmd() has already started issuing this
+			 * command, so do not start here */
+			entry = NULL;
+		}
+		if (entry)
+			atomic_inc(&entry->usecnt);
+	}
+	spin_unlock(&local->cmdlock);
+
+	if (entry) {
+		/* issue next command; if command issuing fails, remove the
+		 * entry from cmd_queue */
+		int res = hfa384x_cmd_issue(dev, entry);
+		spin_lock(&local->cmdlock);
+		__hostap_cmd_queue_free(local, entry, res);
+		spin_unlock(&local->cmdlock);
+	}
+}
+
+
+static inline int hfa384x_wait_offset(struct net_device *dev, u16 o_off)
+{
+	int tries = HFA384X_BAP_BUSY_TIMEOUT;
+	int res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
+
+	while (res && tries > 0) {
+		tries--;
+		udelay(1);
+		res = HFA384X_INW(o_off) & HFA384X_OFFSET_BUSY;
+	}
+	return res;
+}
+
+
+/* Offset must be even */
+static int hfa384x_setup_bap(struct net_device *dev, u16 bap, u16 id,
+			     int offset)
+{
+	u16 o_off, s_off;
+	int ret = 0;
+
+	if (offset % 2 || bap > 1)
+		return -EINVAL;
+
+	if (bap == BAP1) {
+		o_off = HFA384X_OFFSET1_OFF;
+		s_off = HFA384X_SELECT1_OFF;
+	} else {
+		o_off = HFA384X_OFFSET0_OFF;
+		s_off = HFA384X_SELECT0_OFF;
+	}
+
+	if (hfa384x_wait_offset(dev, o_off)) {
+		prism2_io_debug_error(dev, 7);
+		printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout before\n",
+		       dev->name);
+		ret = -ETIMEDOUT;
+		goto out;
+	}
+
+	HFA384X_OUTW(id, s_off);
+	HFA384X_OUTW(offset, o_off);
+
+	if (hfa384x_wait_offset(dev, o_off)) {
+		prism2_io_debug_error(dev, 8);
+		printk(KERN_DEBUG "%s: hfa384x_setup_bap - timeout after\n",
+		       dev->name);
+		ret = -ETIMEDOUT;
+		goto out;
+	}
+#ifndef final_version
+	if (HFA384X_INW(o_off) & HFA384X_OFFSET_ERR) {
+		prism2_io_debug_error(dev, 9);
+		printk(KERN_DEBUG "%s: hfa384x_setup_bap - offset error "
+		       "(%d,0x04%x,%d); reg=0x%04x\n",
+		       dev->name, bap, id, offset, HFA384X_INW(o_off));
+		ret = -EINVAL;
+	}
+#endif
+
+ out:
+	return ret;
+}
+
+
+static int hfa384x_get_rid(struct net_device *dev, u16 rid, void *buf, int len,
+			   int exact_len)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int res, rlen = 0;
+	struct hfa384x_rid_hdr rec;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (local->no_pri) {
+		printk(KERN_DEBUG "%s: cannot get RID %04x (len=%d) - no PRI "
+		       "f/w\n", dev->name, rid, len);
+		return -ENOTTY; /* Well.. not really correct, but return
+				 * something unique enough.. */
+	}
+
+	if ((local->func->card_present && !local->func->card_present(local)) ||
+	    local->hw_downloading)
+		return -ENODEV;
+
+	res = down_interruptible(&local->rid_bap_sem);
+	if (res)
+		return res;
+
+	res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS, rid, NULL, NULL);
+	if (res) {
+		printk(KERN_DEBUG "%s: hfa384x_get_rid: CMDCODE_ACCESS failed "
+		       "(res=%d, rid=%04x, len=%d)\n",
+		       dev->name, res, rid, len);
+		up(&local->rid_bap_sem);
+		return res;
+	}
+
+	spin_lock_bh(&local->baplock);
+
+	res = hfa384x_setup_bap(dev, BAP0, rid, 0);
+	if (!res)
+		res = hfa384x_from_bap(dev, BAP0, &rec, sizeof(rec));
+
+	if (le16_to_cpu(rec.len) == 0) {
+		/* RID not available */
+		res = -ENODATA;
+	}
+
+	rlen = (le16_to_cpu(rec.len) - 1) * 2;
+	if (!res && exact_len && rlen != len) {
+		printk(KERN_DEBUG "%s: hfa384x_get_rid - RID len mismatch: "
+		       "rid=0x%04x, len=%d (expected %d)\n",
+		       dev->name, rid, rlen, len);
+		res = -ENODATA;
+	}
+
+	if (!res)
+		res = hfa384x_from_bap(dev, BAP0, buf, len);
+
+	spin_unlock_bh(&local->baplock);
+	up(&local->rid_bap_sem);
+
+	if (res) {
+		if (res != -ENODATA)
+			printk(KERN_DEBUG "%s: hfa384x_get_rid (rid=%04x, "
+			       "len=%d) - failed - res=%d\n", dev->name, rid,
+			       len, res);
+		if (res == -ETIMEDOUT)
+			prism2_hw_reset(dev);
+		return res;
+	}
+
+	return rlen;
+}
+
+
+static int hfa384x_set_rid(struct net_device *dev, u16 rid, void *buf, int len)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	struct hfa384x_rid_hdr rec;
+	int res;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (local->no_pri) {
+		printk(KERN_DEBUG "%s: cannot set RID %04x (len=%d) - no PRI "
+		       "f/w\n", dev->name, rid, len);
+		return -ENOTTY; /* Well.. not really correct, but return
+				 * something unique enough.. */
+	}
+
+	if ((local->func->card_present && !local->func->card_present(local)) ||
+	    local->hw_downloading)
+		return -ENODEV;
+
+	rec.rid = cpu_to_le16(rid);
+	/* RID len in words and +1 for rec.rid */
+	rec.len = cpu_to_le16(len / 2 + len % 2 + 1);
+
+	res = down_interruptible(&local->rid_bap_sem);
+	if (res)
+		return res;
+
+	spin_lock_bh(&local->baplock);
+	res = hfa384x_setup_bap(dev, BAP0, rid, 0);
+	if (!res)
+		res = hfa384x_to_bap(dev, BAP0, &rec, sizeof(rec));
+	if (!res)
+		res = hfa384x_to_bap(dev, BAP0, buf, len);
+	spin_unlock_bh(&local->baplock);
+
+	if (res) {
+		printk(KERN_DEBUG "%s: hfa384x_set_rid (rid=%04x, len=%d) - "
+		       "failed - res=%d\n", dev->name, rid, len, res);
+		up(&local->rid_bap_sem);
+		return res;
+	}
+
+	res = hfa384x_cmd(dev, HFA384X_CMDCODE_ACCESS_WRITE, rid, NULL, NULL);
+	up(&local->rid_bap_sem);
+	if (res) {
+		printk(KERN_DEBUG "%s: hfa384x_set_rid: CMDCODE_ACCESS_WRITE "
+		       "failed (res=%d, rid=%04x, len=%d)\n",
+		       dev->name, res, rid, len);
+		return res;
+	}
+
+	if (res == -ETIMEDOUT)
+		prism2_hw_reset(dev);
+
+	return res;
+}
+
+
+static void hfa384x_disable_interrupts(struct net_device *dev)
+{
+	/* disable interrupts and clear event status */
+	HFA384X_OUTW(0, HFA384X_INTEN_OFF);
+	HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
+}
+
+
+static void hfa384x_enable_interrupts(struct net_device *dev)
+{
+	/* ack pending events and enable interrupts from selected events */
+	HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
+	HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
+}
+
+
+static void hfa384x_events_no_bap0(struct net_device *dev)
+{
+	HFA384X_OUTW(HFA384X_EVENT_MASK & ~HFA384X_BAP0_EVENTS,
+		     HFA384X_INTEN_OFF);
+}
+
+
+static void hfa384x_events_all(struct net_device *dev)
+{
+	HFA384X_OUTW(HFA384X_EVENT_MASK, HFA384X_INTEN_OFF);
+}
+
+
+static void hfa384x_events_only_cmd(struct net_device *dev)
+{
+	HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_INTEN_OFF);
+}
+
+
+static u16 hfa384x_allocate_fid(struct net_device *dev, int len)
+{
+	u16 fid;
+	unsigned long delay;
+
+	/* FIX: this could be replace with hfa384x_cmd() if the Alloc event
+	 * below would be handled like CmdCompl event (sleep here, wake up from
+	 * interrupt handler */
+	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_ALLOC, len)) {
+		printk(KERN_DEBUG "%s: cannot allocate fid, len=%d\n",
+		       dev->name, len);
+		return 0xffff;
+	}
+
+	delay = jiffies + HFA384X_ALLOC_COMPL_TIMEOUT;
+	while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC) &&
+	       time_before(jiffies, delay))
+		yield();
+	if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_ALLOC)) {
+		printk("%s: fid allocate, len=%d - timeout\n", dev->name, len);
+		return 0xffff;
+	}
+
+	fid = HFA384X_INW(HFA384X_ALLOCFID_OFF);
+	HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
+
+	return fid;
+}
+
+
+static int prism2_reset_port(struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int res;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (!local->dev_enabled)
+		return 0;
+
+	res = hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0,
+			  NULL, NULL);
+	if (res)
+		printk(KERN_DEBUG "%s: reset port failed to disable port\n",
+		       dev->name);
+	else {
+		res = hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0,
+				  NULL, NULL);
+		if (res)
+			printk(KERN_DEBUG "%s: reset port failed to enable "
+			       "port\n", dev->name);
+	}
+
+	/* It looks like at least some STA firmware versions reset
+	 * fragmentation threshold back to 2346 after enable command. Restore
+	 * the configured value, if it differs from this default. */
+	if (local->fragm_threshold != 2346 &&
+	    hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
+			    local->fragm_threshold)) {
+		printk(KERN_DEBUG "%s: failed to restore fragmentation "
+		       "threshold (%d) after Port0 enable\n",
+		       dev->name, local->fragm_threshold);
+	}
+
+	return res;
+}
+
+
+static int prism2_get_version_info(struct net_device *dev, u16 rid,
+				   const char *txt)
+{
+	struct hfa384x_comp_ident comp;
+	struct hostap_interface *iface;
+	local_info_t *local;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (local->no_pri) {
+		/* PRI f/w not yet available - cannot read RIDs */
+		return -1;
+	}
+	if (hfa384x_get_rid(dev, rid, &comp, sizeof(comp), 1) < 0) {
+		printk(KERN_DEBUG "Could not get RID for component %s\n", txt);
+		return -1;
+	}
+
+	printk(KERN_INFO "%s: %s: id=0x%02x v%d.%d.%d\n", dev->name, txt,
+	       __le16_to_cpu(comp.id), __le16_to_cpu(comp.major),
+	       __le16_to_cpu(comp.minor), __le16_to_cpu(comp.variant));
+	return 0;
+}
+
+
+static int prism2_setup_rids(struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	u16 tmp;
+	int ret = 0;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	hostap_set_word(dev, HFA384X_RID_TICKTIME, 2000);
+
+	if (!local->fw_ap) {
+		tmp = hostap_get_porttype(local);
+		ret = hostap_set_word(dev, HFA384X_RID_CNFPORTTYPE, tmp);
+		if (ret) {
+			printk("%s: Port type setting to %d failed\n",
+			       dev->name, tmp);
+			goto fail;
+		}
+	}
+
+	/* Setting SSID to empty string seems to kill the card in Host AP mode
+	 */
+	if (local->iw_mode != IW_MODE_MASTER || local->essid[0] != '\0') {
+		ret = hostap_set_string(dev, HFA384X_RID_CNFOWNSSID,
+					local->essid);
+		if (ret) {
+			printk("%s: AP own SSID setting failed\n", dev->name);
+			goto fail;
+		}
+	}
+
+	ret = hostap_set_word(dev, HFA384X_RID_CNFMAXDATALEN,
+			      PRISM2_DATA_MAXLEN);
+	if (ret) {
+		printk("%s: MAC data length setting to %d failed\n",
+		       dev->name, PRISM2_DATA_MAXLEN);
+		goto fail;
+	}
+
+	if (hfa384x_get_rid(dev, HFA384X_RID_CHANNELLIST, &tmp, 2, 1) < 0) {
+		printk("%s: Channel list read failed\n", dev->name);
+		ret = -EINVAL;
+		goto fail;
+	}
+	local->channel_mask = __le16_to_cpu(tmp);
+
+	if (local->channel < 1 || local->channel > 14 ||
+	    !(local->channel_mask & (1 << (local->channel - 1)))) {
+		printk(KERN_WARNING "%s: Channel setting out of range "
+		       "(%d)!\n", dev->name, local->channel);
+		ret = -EBUSY;
+		goto fail;
+	}
+
+	ret = hostap_set_word(dev, HFA384X_RID_CNFOWNCHANNEL, local->channel);
+	if (ret) {
+		printk("%s: Channel setting to %d failed\n",
+		       dev->name, local->channel);
+		goto fail;
+	}
+
+	ret = hostap_set_word(dev, HFA384X_RID_CNFBEACONINT,
+			      local->beacon_int);
+	if (ret) {
+		printk("%s: Beacon interval setting to %d failed\n",
+		       dev->name, local->beacon_int);
+		/* this may fail with Symbol/Lucent firmware */
+		if (ret == -ETIMEDOUT)
+			goto fail;
+	}
+
+	ret = hostap_set_word(dev, HFA384X_RID_CNFOWNDTIMPERIOD,
+			      local->dtim_period);
+	if (ret) {
+		printk("%s: DTIM period setting to %d failed\n",
+		       dev->name, local->dtim_period);
+		/* this may fail with Symbol/Lucent firmware */
+		if (ret == -ETIMEDOUT)
+			goto fail;
+	}
+
+	ret = hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
+			      local->is_promisc);
+	if (ret)
+		printk(KERN_INFO "%s: Setting promiscuous mode (%d) failed\n",
+		       dev->name, local->is_promisc);
+
+	if (!local->fw_ap) {
+		ret = hostap_set_string(dev, HFA384X_RID_CNFDESIREDSSID,
+					local->essid);
+		if (ret) {
+			printk("%s: Desired SSID setting failed\n", dev->name);
+			goto fail;
+		}
+	}
+
+	/* Setup TXRateControl, defaults to allow use of 1, 2, 5.5, and
+	 * 11 Mbps in automatic TX rate fallback and 1 and 2 Mbps as basic
+	 * rates */
+	if (local->tx_rate_control == 0) {
+		local->tx_rate_control =
+			HFA384X_RATES_1MBPS |
+			HFA384X_RATES_2MBPS |
+			HFA384X_RATES_5MBPS |
+			HFA384X_RATES_11MBPS;
+	}
+	if (local->basic_rates == 0)
+		local->basic_rates = HFA384X_RATES_1MBPS | HFA384X_RATES_2MBPS;
+
+	if (!local->fw_ap) {
+		ret = hostap_set_word(dev, HFA384X_RID_TXRATECONTROL,
+				      local->tx_rate_control);
+		if (ret) {
+			printk("%s: TXRateControl setting to %d failed\n",
+			       dev->name, local->tx_rate_control);
+			goto fail;
+		}
+
+		ret = hostap_set_word(dev, HFA384X_RID_CNFSUPPORTEDRATES,
+				      local->tx_rate_control);
+		if (ret) {
+			printk("%s: cnfSupportedRates setting to %d failed\n",
+			       dev->name, local->tx_rate_control);
+		}
+
+		ret = hostap_set_word(dev, HFA384X_RID_CNFBASICRATES,
+				      local->basic_rates);
+		if (ret) {
+			printk("%s: cnfBasicRates setting to %d failed\n",
+			       dev->name, local->basic_rates);
+		}
+
+		ret = hostap_set_word(dev, HFA384X_RID_CREATEIBSS, 1);
+		if (ret) {
+			printk("%s: Create IBSS setting to 1 failed\n",
+			       dev->name);
+		}
+	}
+
+	if (local->name_set)
+		(void) hostap_set_string(dev, HFA384X_RID_CNFOWNNAME,
+					 local->name);
+
+	if (hostap_set_encryption(local)) {
+		printk(KERN_INFO "%s: could not configure encryption\n",
+		       dev->name);
+	}
+
+	(void) hostap_set_antsel(local);
+
+	if (hostap_set_roaming(local)) {
+		printk(KERN_INFO "%s: could not set host roaming\n",
+		       dev->name);
+	}
+
+	if (local->sta_fw_ver >= PRISM2_FW_VER(1,6,3) &&
+	    hostap_set_word(dev, HFA384X_RID_CNFENHSECURITY, local->enh_sec))
+		printk(KERN_INFO "%s: cnfEnhSecurity setting to 0x%x failed\n",
+		       dev->name, local->enh_sec);
+
+	/* 32-bit tallies were added in STA f/w 0.8.0, but they were apparently
+	 * not working correctly (last seven counters report bogus values).
+	 * This has been fixed in 0.8.2, so enable 32-bit tallies only
+	 * beginning with that firmware version. Another bug fix for 32-bit
+	 * tallies in 1.4.0; should 16-bit tallies be used for some other
+	 * versions, too? */
+	if (local->sta_fw_ver >= PRISM2_FW_VER(0,8,2)) {
+		if (hostap_set_word(dev, HFA384X_RID_CNFTHIRTY2TALLY, 1)) {
+			printk(KERN_INFO "%s: cnfThirty2Tally setting "
+			       "failed\n", dev->name);
+			local->tallies32 = 0;
+		} else
+			local->tallies32 = 1;
+	} else
+		local->tallies32 = 0;
+
+	hostap_set_auth_algs(local);
+
+	if (hostap_set_word(dev, HFA384X_RID_FRAGMENTATIONTHRESHOLD,
+			    local->fragm_threshold)) {
+		printk(KERN_INFO "%s: setting FragmentationThreshold to %d "
+		       "failed\n", dev->name, local->fragm_threshold);
+	}
+
+	if (hostap_set_word(dev, HFA384X_RID_RTSTHRESHOLD,
+			    local->rts_threshold)) {
+		printk(KERN_INFO "%s: setting RTSThreshold to %d failed\n",
+		       dev->name, local->rts_threshold);
+	}
+
+	if (local->manual_retry_count >= 0 &&
+	    hostap_set_word(dev, HFA384X_RID_CNFALTRETRYCOUNT,
+			    local->manual_retry_count)) {
+		printk(KERN_INFO "%s: setting cnfAltRetryCount to %d failed\n",
+		       dev->name, local->manual_retry_count);
+	}
+
+	if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1) &&
+	    hfa384x_get_rid(dev, HFA384X_RID_CNFDBMADJUST, &tmp, 2, 1) == 2) {
+		local->rssi_to_dBm = le16_to_cpu(tmp);
+	}
+
+	if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->wpa &&
+	    hostap_set_word(dev, HFA384X_RID_SSNHANDLINGMODE, 1)) {
+		printk(KERN_INFO "%s: setting ssnHandlingMode to 1 failed\n",
+		       dev->name);
+	}
+
+	if (local->sta_fw_ver >= PRISM2_FW_VER(1,7,0) && local->generic_elem &&
+	    hfa384x_set_rid(dev, HFA384X_RID_GENERICELEMENT,
+			    local->generic_elem, local->generic_elem_len)) {
+		printk(KERN_INFO "%s: setting genericElement failed\n",
+		       dev->name);
+	}
+
+ fail:
+	return ret;
+}
+
+
+static int prism2_hw_init(struct net_device *dev, int initial)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int ret, first = 1;
+	unsigned long start, delay;
+
+	PDEBUG(DEBUG_FLOW, "prism2_hw_init()\n");
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits);
+
+ init:
+	/* initialize HFA 384x */
+	ret = hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_INIT, 0);
+	if (ret) {
+		printk(KERN_INFO "%s: first command failed - assuming card "
+		       "does not have primary firmware\n", dev_info);
+	}
+
+	if (first && (HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
+		/* EvStat has Cmd bit set in some cases, so retry once if no
+		 * wait was needed */
+		HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
+		printk(KERN_DEBUG "%s: init command completed too quickly - "
+		       "retrying\n", dev->name);
+		first = 0;
+		goto init;
+	}
+
+	start = jiffies;
+	delay = jiffies + HFA384X_INIT_TIMEOUT;
+	while (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD) &&
+	       time_before(jiffies, delay))
+		yield();
+	if (!(HFA384X_INW(HFA384X_EVSTAT_OFF) & HFA384X_EV_CMD)) {
+		printk(KERN_DEBUG "%s: assuming no Primary image in "
+		       "flash - card initialization not completed\n",
+		       dev_info);
+		local->no_pri = 1;
+#ifdef PRISM2_DOWNLOAD_SUPPORT
+			if (local->sram_type == -1)
+				local->sram_type = prism2_get_ram_size(local);
+#endif /* PRISM2_DOWNLOAD_SUPPORT */
+		return 1;
+	}
+	local->no_pri = 0;
+	printk(KERN_DEBUG "prism2_hw_init: initialized in %lu ms\n",
+	       (jiffies - start) * 1000 / HZ);
+	HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);
+	return 0;
+}
+
+
+static int prism2_hw_init2(struct net_device *dev, int initial)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int i;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+#ifdef PRISM2_DOWNLOAD_SUPPORT
+	kfree(local->pda);
+	if (local->no_pri)
+		local->pda = NULL;
+	else
+		local->pda = prism2_read_pda(dev);
+#endif /* PRISM2_DOWNLOAD_SUPPORT */
+
+	hfa384x_disable_interrupts(dev);
+
+#ifndef final_version
+	HFA384X_OUTW(HFA384X_MAGIC, HFA384X_SWSUPPORT0_OFF);
+	if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
+		printk("SWSUPPORT0 write/read failed: %04X != %04X\n",
+		       HFA384X_INW(HFA384X_SWSUPPORT0_OFF), HFA384X_MAGIC);
+		goto failed;
+	}
+#endif
+
+	if (initial || local->pri_only) {
+		hfa384x_events_only_cmd(dev);
+		/* get card version information */
+		if (prism2_get_version_info(dev, HFA384X_RID_NICID, "NIC") ||
+		    prism2_get_version_info(dev, HFA384X_RID_PRIID, "PRI")) {
+			hfa384x_disable_interrupts(dev);
+			goto failed;
+		}
+
+		if (prism2_get_version_info(dev, HFA384X_RID_STAID, "STA")) {
+			printk(KERN_DEBUG "%s: Failed to read STA f/w version "
+			       "- only Primary f/w present\n", dev->name);
+			local->pri_only = 1;
+			return 0;
+		}
+		local->pri_only = 0;
+		hfa384x_disable_interrupts(dev);
+	}
+
+	/* FIX: could convert allocate_fid to use sleeping CmdCompl wait and
+	 * enable interrupts before this. This would also require some sort of
+	 * sleeping AllocEv waiting */
+
+	/* allocate TX FIDs */
+	local->txfid_len = PRISM2_TXFID_LEN;
+	for (i = 0; i < PRISM2_TXFID_COUNT; i++) {
+		local->txfid[i] = hfa384x_allocate_fid(dev, local->txfid_len);
+		if (local->txfid[i] == 0xffff && local->txfid_len > 1600) {
+			local->txfid[i] = hfa384x_allocate_fid(dev, 1600);
+			if (local->txfid[i] != 0xffff) {
+				printk(KERN_DEBUG "%s: Using shorter TX FID "
+				       "(1600 bytes)\n", dev->name);
+				local->txfid_len = 1600;
+			}
+		}
+		if (local->txfid[i] == 0xffff)
+			goto failed;
+		local->intransmitfid[i] = PRISM2_TXFID_EMPTY;
+	}
+
+	hfa384x_events_only_cmd(dev);
+
+	if (initial) {
+		struct list_head *ptr;
+		prism2_check_sta_fw_version(local);
+
+		if (hfa384x_get_rid(dev, HFA384X_RID_CNFOWNMACADDR,
+				    &dev->dev_addr, 6, 1) < 0) {
+			printk("%s: could not get own MAC address\n",
+			       dev->name);
+		}
+		list_for_each(ptr, &local->hostap_interfaces) {
+			iface = list_entry(ptr, struct hostap_interface, list);
+			memcpy(iface->dev->dev_addr, dev->dev_addr, ETH_ALEN);
+		}
+	} else if (local->fw_ap)
+		prism2_check_sta_fw_version(local);
+
+	prism2_setup_rids(dev);
+
+	/* MAC is now configured, but port 0 is not yet enabled */
+	return 0;
+
+ failed:
+	if (!local->no_pri)
+		printk(KERN_WARNING "%s: Initialization failed\n", dev_info);
+	return 1;
+}
+
+
+static int prism2_hw_enable(struct net_device *dev, int initial)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int was_resetting;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+	was_resetting = local->hw_resetting;
+
+	if (hfa384x_cmd(dev, HFA384X_CMDCODE_ENABLE, 0, NULL, NULL)) {
+		printk("%s: MAC port 0 enabling failed\n", dev->name);
+		return 1;
+	}
+
+	local->hw_ready = 1;
+	local->hw_reset_tries = 0;
+	local->hw_resetting = 0;
+	hfa384x_enable_interrupts(dev);
+
+	/* at least D-Link DWL-650 seems to require additional port reset
+	 * before it starts acting as an AP, so reset port automatically
+	 * here just in case */
+	if (initial && prism2_reset_port(dev)) {
+		printk("%s: MAC port 0 reseting failed\n", dev->name);
+		return 1;
+	}
+
+	if (was_resetting && netif_queue_stopped(dev)) {
+		/* If hw_reset() was called during pending transmit, netif
+		 * queue was stopped. Wake it up now since the wlan card has
+		 * been resetted. */
+		netif_wake_queue(dev);
+	}
+
+	return 0;
+}
+
+
+static int prism2_hw_config(struct net_device *dev, int initial)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (local->hw_downloading)
+		return 1;
+
+	if (prism2_hw_init(dev, initial)) {
+		return local->no_pri ? 0 : 1;
+	}
+
+	if (prism2_hw_init2(dev, initial))
+		return 1;
+
+	/* Enable firmware if secondary image is loaded and at least one of the
+	 * netdevices is up. */
+	if (!local->pri_only &&
+	    (initial == 0 || (initial == 2 && local->num_dev_open > 0))) {
+		if (!local->dev_enabled)
+			prism2_callback(local, PRISM2_CALLBACK_ENABLE);
+		local->dev_enabled = 1;
+		return prism2_hw_enable(dev, initial);
+	}
+
+	return 0;
+}
+
+
+static void prism2_hw_shutdown(struct net_device *dev, int no_disable)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	/* Allow only command completion events during disable */
+	hfa384x_events_only_cmd(dev);
+
+	local->hw_ready = 0;
+	if (local->dev_enabled)
+		prism2_callback(local, PRISM2_CALLBACK_DISABLE);
+	local->dev_enabled = 0;
+
+	if (local->func->card_present && !local->func->card_present(local)) {
+		printk(KERN_DEBUG "%s: card already removed or not configured "
+		       "during shutdown\n", dev->name);
+		return;
+	}
+
+	if ((no_disable & HOSTAP_HW_NO_DISABLE) == 0 &&
+	    hfa384x_cmd(dev, HFA384X_CMDCODE_DISABLE, 0, NULL, NULL))
+		printk(KERN_WARNING "%s: Shutdown failed\n", dev_info);
+
+	hfa384x_disable_interrupts(dev);
+
+	if (no_disable & HOSTAP_HW_ENABLE_CMDCOMPL)
+		hfa384x_events_only_cmd(dev);
+	else
+		prism2_clear_cmd_queue(local);
+}
+
+
+static void prism2_hw_reset(struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+
+#if 0
+	static long last_reset = 0;
+
+	/* do not reset card more than once per second to avoid ending up in a
+	 * busy loop reseting the card */
+	if (time_before_eq(jiffies, last_reset + HZ))
+		return;
+	last_reset = jiffies;
+#endif
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (in_interrupt()) {
+		printk(KERN_DEBUG "%s: driver bug - prism2_hw_reset() called "
+		       "in interrupt context\n", dev->name);
+		return;
+	}
+
+	if (local->hw_downloading)
+		return;
+
+	if (local->hw_resetting) {
+		printk(KERN_WARNING "%s: %s: already resetting card - "
+		       "ignoring reset request\n", dev_info, dev->name);
+		return;
+	}
+
+	local->hw_reset_tries++;
+	if (local->hw_reset_tries > 10) {
+		printk(KERN_WARNING "%s: too many reset tries, skipping\n",
+		       dev->name);
+		return;
+	}
+
+	printk(KERN_WARNING "%s: %s: resetting card\n", dev_info, dev->name);
+	hfa384x_disable_interrupts(dev);
+	local->hw_resetting = 1;
+	if (local->func->cor_sreset) {
+		/* Host system seems to hang in some cases with high traffic
+		 * load or shared interrupts during COR sreset. Disable shared
+		 * interrupts during reset to avoid these crashes. COS sreset
+		 * takes quite a long time, so it is unfortunate that this
+		 * seems to be needed. Anyway, I do not know of any better way
+		 * of avoiding the crash. */
+		disable_irq(dev->irq);
+		local->func->cor_sreset(local);
+		enable_irq(dev->irq);
+	}
+	prism2_hw_shutdown(dev, 1);
+	prism2_hw_config(dev, 0);
+	local->hw_resetting = 0;
+
+#ifdef PRISM2_DOWNLOAD_SUPPORT
+	if (local->dl_pri) {
+		printk(KERN_DEBUG "%s: persistent download of primary "
+		       "firmware\n", dev->name);
+		if (prism2_download_genesis(local, local->dl_pri) < 0)
+			printk(KERN_WARNING "%s: download (PRI) failed\n",
+			       dev->name);
+	}
+
+	if (local->dl_sec) {
+		printk(KERN_DEBUG "%s: persistent download of secondary "
+		       "firmware\n", dev->name);
+		if (prism2_download_volatile(local, local->dl_sec) < 0)
+			printk(KERN_WARNING "%s: download (SEC) failed\n",
+			       dev->name);
+	}
+#endif /* PRISM2_DOWNLOAD_SUPPORT */
+
+	/* TODO: restore beacon TIM bits for STAs that have buffered frames */
+}
+
+
+static void prism2_schedule_reset(local_info_t *local)
+{
+	schedule_work(&local->reset_queue);
+}
+
+
+/* Called only as scheduled task after noticing card timeout in interrupt
+ * context */
+static void handle_reset_queue(void *data)
+{
+	local_info_t *local = (local_info_t *) data;
+
+	printk(KERN_DEBUG "%s: scheduled card reset\n", local->dev->name);
+	prism2_hw_reset(local->dev);
+
+	if (netif_queue_stopped(local->dev)) {
+		int i;
+
+		for (i = 0; i < PRISM2_TXFID_COUNT; i++)
+			if (local->intransmitfid[i] == PRISM2_TXFID_EMPTY) {
+				PDEBUG(DEBUG_EXTRA, "prism2_tx_timeout: "
+				       "wake up queue\n");
+				netif_wake_queue(local->dev);
+				break;
+			}
+	}
+}
+
+
+static int prism2_get_txfid_idx(local_info_t *local)
+{
+	int idx, end;
+	unsigned long flags;
+
+	spin_lock_irqsave(&local->txfidlock, flags);
+	end = idx = local->next_txfid;
+	do {
+		if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
+			local->intransmitfid[idx] = PRISM2_TXFID_RESERVED;
+			spin_unlock_irqrestore(&local->txfidlock, flags);
+			return idx;
+		}
+		idx++;
+		if (idx >= PRISM2_TXFID_COUNT)
+			idx = 0;
+	} while (idx != end);
+	spin_unlock_irqrestore(&local->txfidlock, flags);
+
+	PDEBUG(DEBUG_EXTRA2, "prism2_get_txfid_idx: no room in txfid buf: "
+	       "packet dropped\n");
+	local->stats.tx_dropped++;
+
+	return -1;
+}
+
+
+/* Called only from hardware IRQ */
+static void prism2_transmit_cb(struct net_device *dev, void *context,
+			       u16 resp0, u16 res)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int idx = (int) context;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (res) {
+		printk(KERN_DEBUG "%s: prism2_transmit_cb - res=0x%02x\n",
+		       dev->name, res);
+		return;
+	}
+
+	if (idx < 0 || idx >= PRISM2_TXFID_COUNT) {
+		printk(KERN_DEBUG "%s: prism2_transmit_cb called with invalid "
+		       "idx=%d\n", dev->name, idx);
+		return;
+	}
+
+	if (!test_and_clear_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
+		printk(KERN_DEBUG "%s: driver bug: prism2_transmit_cb called "
+		       "with no pending transmit\n", dev->name);
+	}
+
+	if (netif_queue_stopped(dev)) {
+		/* ready for next TX, so wake up queue that was stopped in
+		 * prism2_transmit() */
+		netif_wake_queue(dev);
+	}
+
+	spin_lock(&local->txfidlock);
+
+	/* With reclaim, Resp0 contains new txfid for transmit; the old txfid
+	 * will be automatically allocated for the next TX frame */
+	local->intransmitfid[idx] = resp0;
+
+	PDEBUG(DEBUG_FID, "%s: prism2_transmit_cb: txfid[%d]=0x%04x, "
+	       "resp0=0x%04x, transmit_txfid=0x%04x\n",
+	       dev->name, idx, local->txfid[idx],
+	       resp0, local->intransmitfid[local->next_txfid]);
+
+	idx++;
+	if (idx >= PRISM2_TXFID_COUNT)
+		idx = 0;
+	local->next_txfid = idx;
+
+	/* check if all TX buffers are occupied */
+	do {
+		if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY) {
+			spin_unlock(&local->txfidlock);
+			return;
+		}
+		idx++;
+		if (idx >= PRISM2_TXFID_COUNT)
+			idx = 0;
+	} while (idx != local->next_txfid);
+	spin_unlock(&local->txfidlock);
+
+	/* no empty TX buffers, stop queue */
+	netif_stop_queue(dev);
+}
+
+
+/* Called only from software IRQ if PCI bus master is not used (with bus master
+ * this can be called both from software and hardware IRQ) */
+static int prism2_transmit(struct net_device *dev, int idx)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int res;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	/* The driver tries to stop netif queue so that there would not be
+	 * more than one attempt to transmit frames going on; check that this
+	 * is really the case */
+
+	if (test_and_set_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
+		printk(KERN_DEBUG "%s: driver bug - prism2_transmit() called "
+		       "when previous TX was pending\n", dev->name);
+		return -1;
+	}
+
+	/* stop the queue for the time that transmit is pending */
+	netif_stop_queue(dev);
+
+	/* transmit packet */
+	res = hfa384x_cmd_callback(
+		dev,
+		HFA384X_CMDCODE_TRANSMIT | HFA384X_CMD_TX_RECLAIM,
+		local->txfid[idx],
+		prism2_transmit_cb, (void *) idx);
+
+	if (res) {
+		struct net_device_stats *stats;
+		printk(KERN_DEBUG "%s: prism2_transmit: CMDCODE_TRANSMIT "
+		       "failed (res=%d)\n", dev->name, res);
+		stats = hostap_get_stats(dev);
+		stats->tx_dropped++;
+		netif_wake_queue(dev);
+		return -1;
+	}
+	dev->trans_start = jiffies;
+
+	/* Since we did not wait for command completion, the card continues
+	 * to process on the background and we will finish handling when
+	 * command completion event is handled (prism2_cmd_ev() function) */
+
+	return 0;
+}
+
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+/* Called only from hardware IRQ */
+static void prism2_tx_cb(struct net_device *dev, void *context,
+			 u16 resp0, u16 res)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long addr;
+	int buf_len = (int) context;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (res) {
+		printk(KERN_DEBUG "%s: prism2_tx_cb - res=0x%02x\n",
+		       dev->name, res);
+		return;
+	}
+
+	addr = virt_to_phys(local->bus_m0_buf);
+	HFA384X_OUTW((addr & 0xffff0000) >> 16, HFA384X_PCI_M0_ADDRH_OFF);
+	HFA384X_OUTW(addr & 0x0000ffff, HFA384X_PCI_M0_ADDRL_OFF);
+	HFA384X_OUTW(buf_len / 2, HFA384X_PCI_M0_LEN_OFF);
+	HFA384X_OUTW(HFA384X_PCI_CTL_TO_BAP, HFA384X_PCI_M0_CTL_OFF);
+}
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+
+
+/* Send IEEE 802.11 frame (convert the header into Prism2 TX descriptor and
+ * send the payload with this descriptor) */
+/* Called only from software IRQ */
+static int prism2_tx_80211(struct sk_buff *skb, struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	struct hfa384x_tx_frame txdesc;
+	struct hostap_ieee80211_hdr *hdr;
+	struct hostap_skb_tx_data *meta;
+	int hdr_len, data_len, idx, res, ret = -1;
+	u16 tx_control, fc;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	meta = (struct hostap_skb_tx_data *) skb->cb;
+	hdr = (struct hostap_ieee80211_hdr *) skb->data;
+
+	prism2_callback(local, PRISM2_CALLBACK_TX_START);
+
+	if ((local->func->card_present && !local->func->card_present(local)) ||
+	    !local->hw_ready || local->hw_downloading || local->pri_only) {
+		if (net_ratelimit()) {
+			printk(KERN_DEBUG "%s: prism2_tx_80211: hw not ready -"
+			       " skipping\n", dev->name);
+		}
+		goto fail;
+	}
+
+	memset(&txdesc, 0, sizeof(txdesc));
+
+	/* skb->data starts with txdesc->frame_control */
+	hdr_len = 24;
+	memcpy(&txdesc.frame_control, skb->data, hdr_len);
+ 	fc = le16_to_cpu(txdesc.frame_control);
+	if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA &&
+	    (fc & WLAN_FC_FROMDS) && (fc & WLAN_FC_TODS) && skb->len >= 30) {
+		/* Addr4 */
+		memcpy(txdesc.addr4, skb->data + hdr_len, ETH_ALEN);
+		hdr_len += ETH_ALEN;
+	}
+
+	tx_control = local->tx_control;
+	if (meta->tx_cb_idx) {
+		tx_control |= HFA384X_TX_CTRL_TX_OK;
+		txdesc.sw_support = cpu_to_le16(meta->tx_cb_idx);
+	}
+	txdesc.tx_control = cpu_to_le16(tx_control);
+	txdesc.tx_rate = meta->rate;
+
+	data_len = skb->len - hdr_len;
+	txdesc.data_len = cpu_to_le16(data_len);
+	txdesc.len = cpu_to_be16(data_len);
+
+	idx = prism2_get_txfid_idx(local);
+	if (idx < 0)
+		goto fail;
+
+	if (local->frame_dump & PRISM2_DUMP_TX_HDR)
+		hostap_dump_tx_header(dev->name, &txdesc);
+
+	spin_lock(&local->baplock);
+	res = hfa384x_setup_bap(dev, BAP0, local->txfid[idx], 0);
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+	if (!res && skb->len >= local->bus_master_threshold_tx) {
+		u8 *pos;
+		int buf_len;
+
+		local->bus_m0_tx_idx = idx;
+
+		/* FIX: BAP0 should be locked during bus master transfer, but
+		 * baplock with BH's disabled is not OK for this; netif queue
+		 * stopping is not enough since BAP0 is used also for RID
+		 * read/write */
+
+		/* stop the queue for the time that bus mastering on BAP0 is
+		 * in use */
+		netif_stop_queue(dev);
+
+		spin_unlock(&local->baplock);
+
+		/* Copy frame data to bus_m0_buf */
+		pos = local->bus_m0_buf;
+		memcpy(pos, &txdesc, sizeof(txdesc));
+		pos += sizeof(txdesc);
+		memcpy(pos, skb->data + hdr_len, skb->len - hdr_len);
+		pos += skb->len - hdr_len;
+		buf_len = pos - local->bus_m0_buf;
+		if (buf_len & 1)
+			buf_len++;
+
+#ifdef PRISM2_ENABLE_BEFORE_TX_BUS_MASTER
+		/* Any RX packet seems to break something with TX bus
+		 * mastering; enable command is enough to fix this.. */
+		if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_ENABLE, 0,
+					 prism2_tx_cb, (void *) buf_len)) {
+			printk(KERN_DEBUG "%s: TX: enable port0 failed\n",
+			       dev->name);
+		}
+#else /* PRISM2_ENABLE_BEFORE_TX_BUS_MASTER */
+		prism2_tx_cb(dev, (void *) buf_len, 0, 0);
+#endif /* PRISM2_ENABLE_BEFORE_TX_BUS_MASTER */
+
+		/* Bus master transfer will be started from command completion
+		 * event handler and TX handling will be finished by calling
+		 * prism2_transmit() from bus master event handler */
+		goto tx_stats;
+	}
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+
+	if (!res)
+		res = hfa384x_to_bap(dev, BAP0, &txdesc, sizeof(txdesc));
+	if (!res)
+		res = hfa384x_to_bap(dev, BAP0, skb->data + hdr_len,
+				     skb->len - hdr_len);
+	spin_unlock(&local->baplock);
+
+	if (!res)
+		res = prism2_transmit(dev, idx);
+	if (res) {
+		printk(KERN_DEBUG "%s: prism2_tx_80211 - to BAP0 failed\n",
+		       dev->name);
+		local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
+		schedule_work(&local->reset_queue);
+		goto fail;
+	}
+
+	ret = 0;
+
+fail:
+	prism2_callback(local, PRISM2_CALLBACK_TX_END);
+	return ret;
+}
+
+
+/* Some SMP systems have reported number of odd errors with hostap_pci. fid
+ * register has changed values between consecutive reads for an unknown reason.
+ * This should really not happen, so more debugging is needed. This test
+ * version is a big slower, but it will detect most of such register changes
+ * and will try to get the correct fid eventually. */
+#define EXTRA_FID_READ_TESTS
+
+static inline u16 prism2_read_fid_reg(struct net_device *dev, u16 reg)
+{
+#ifdef EXTRA_FID_READ_TESTS
+	u16 val, val2, val3;
+	int i;
+
+	for (i = 0; i < 10; i++) {
+		val = HFA384X_INW(reg);
+		val2 = HFA384X_INW(reg);
+		val3 = HFA384X_INW(reg);
+
+		if (val == val2 && val == val3)
+			return val;
+
+		printk(KERN_DEBUG "%s: detected fid change (try=%d, reg=%04x):"
+		       " %04x %04x %04x\n",
+		       dev->name, i, reg, val, val2, val3);
+		if ((val == val2 || val == val3) && val != 0)
+			return val;
+		if (val2 == val3 && val2 != 0)
+			return val2;
+	}
+	printk(KERN_WARNING "%s: Uhhuh.. could not read good fid from reg "
+	       "%04x (%04x %04x %04x)\n", dev->name, reg, val, val2, val3);
+	return val;
+#else /* EXTRA_FID_READ_TESTS */
+	return HFA384X_INW(reg);
+#endif /* EXTRA_FID_READ_TESTS */
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void prism2_rx(local_info_t *local)
+{
+	struct net_device *dev = local->dev;
+	int res, rx_pending = 0;
+	u16 len, hdr_len, rxfid, status, macport;
+	struct net_device_stats *stats;
+	struct hfa384x_rx_frame rxdesc;
+	struct sk_buff *skb = NULL;
+
+	prism2_callback(local, PRISM2_CALLBACK_RX_START);
+	stats = hostap_get_stats(dev);
+
+	rxfid = prism2_read_fid_reg(dev, HFA384X_RXFID_OFF);
+#ifndef final_version
+	if (rxfid == 0) {
+		rxfid = HFA384X_INW(HFA384X_RXFID_OFF);
+		printk(KERN_DEBUG "prism2_rx: rxfid=0 (next 0x%04x)\n",
+		       rxfid);
+		if (rxfid == 0) {
+			schedule_work(&local->reset_queue);
+			goto rx_dropped;
+		}
+		/* try to continue with the new rxfid value */
+	}
+#endif
+
+	spin_lock(&local->baplock);
+	res = hfa384x_setup_bap(dev, BAP0, rxfid, 0);
+	if (!res)
+		res = hfa384x_from_bap(dev, BAP0, &rxdesc, sizeof(rxdesc));
+
+	if (res) {
+		spin_unlock(&local->baplock);
+		printk(KERN_DEBUG "%s: copy from BAP0 failed %d\n", dev->name,
+		       res);
+		if (res == -ETIMEDOUT) {
+			schedule_work(&local->reset_queue);
+		}
+		goto rx_dropped;
+	}
+
+	len = le16_to_cpu(rxdesc.data_len);
+	hdr_len = sizeof(rxdesc);
+	status = le16_to_cpu(rxdesc.status);
+	macport = (status >> 8) & 0x07;
+
+	/* Drop frames with too large reported payload length. Monitor mode
+	 * seems to sometimes pass frames (e.g., ctrl::ack) with signed and
+	 * negative value, so allow also values 65522 .. 65534 (-14 .. -2) for
+	 * macport 7 */
+	if (len > PRISM2_DATA_MAXLEN + 8 /* WEP */) {
+		if (macport == 7 && local->iw_mode == IW_MODE_MONITOR) {
+			if (len >= (u16) -14) {
+				hdr_len -= 65535 - len;
+				hdr_len--;
+			}
+			len = 0;
+		} else {
+			spin_unlock(&local->baplock);
+			printk(KERN_DEBUG "%s: Received frame with invalid "
+			       "length 0x%04x\n", dev->name, len);
+			hostap_dump_rx_header(dev->name, &rxdesc);
+			goto rx_dropped;
+		}
+	}
+
+	skb = dev_alloc_skb(len + hdr_len);
+	if (!skb) {
+		spin_unlock(&local->baplock);
+		printk(KERN_DEBUG "%s: RX failed to allocate skb\n",
+		       dev->name);
+		goto rx_dropped;
+	}
+	skb->dev = dev;
+	memcpy(skb_put(skb, hdr_len), &rxdesc, hdr_len);
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+	if (len >= local->bus_master_threshold_rx) {
+		unsigned long addr;
+
+		hfa384x_events_no_bap1(dev);
+
+		local->rx_skb = skb;
+		/* Internal BAP0 offset points to the byte following rxdesc;
+		 * copy rest of the data using bus master */
+		addr = virt_to_phys(skb_put(skb, len));
+		HFA384X_OUTW((addr & 0xffff0000) >> 16,
+			     HFA384X_PCI_M0_ADDRH_OFF);
+		HFA384X_OUTW(addr & 0x0000ffff, HFA384X_PCI_M0_ADDRL_OFF);
+		if (len & 1)
+			len++;
+		HFA384X_OUTW(len / 2, HFA384X_PCI_M0_LEN_OFF);
+		HFA384X_OUTW(HFA384X_PCI_CTL_FROM_BAP, HFA384X_PCI_M0_CTL_OFF);
+
+		/* pci_bus_m1 event will be generated when data transfer is
+		 * complete and the frame will then be added to rx_list and
+		 * rx_tasklet is scheduled */
+		rx_pending = 1;
+
+		/* Have to release baplock before returning, although BAP0
+		 * should really not be used before DMA transfer has been
+		 * completed. */
+		spin_unlock(&local->baplock);
+	} else
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+	{
+		if (len > 0)
+			res = hfa384x_from_bap(dev, BAP0, skb_put(skb, len),
+					       len);
+		spin_unlock(&local->baplock);
+		if (res) {
+			printk(KERN_DEBUG "%s: RX failed to read "
+			       "frame data\n", dev->name);
+			goto rx_dropped;
+		}
+
+		skb_queue_tail(&local->rx_list, skb);
+		tasklet_schedule(&local->rx_tasklet);
+	}
+
+ rx_exit:
+	prism2_callback(local, PRISM2_CALLBACK_RX_END);
+	if (!rx_pending) {
+		HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF);
+	}
+
+	return;
+
+ rx_dropped:
+	stats->rx_dropped++;
+	if (skb)
+		dev_kfree_skb(skb);
+	goto rx_exit;
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void hostap_rx_skb(local_info_t *local, struct sk_buff *skb)
+{
+	struct hfa384x_rx_frame *rxdesc;
+	struct net_device *dev = skb->dev;
+	struct hostap_80211_rx_status stats;
+	int hdrlen, rx_hdrlen;
+
+	rx_hdrlen = sizeof(*rxdesc);
+	if (skb->len < sizeof(*rxdesc)) {
+		/* Allow monitor mode to receive shorter frames */
+		if (local->iw_mode == IW_MODE_MONITOR &&
+		    skb->len >= sizeof(*rxdesc) - 30) {
+			rx_hdrlen = skb->len;
+		} else {
+			dev_kfree_skb(skb);
+			return;
+		}
+	}
+
+	rxdesc = (struct hfa384x_rx_frame *) skb->data;
+
+	if (local->frame_dump & PRISM2_DUMP_RX_HDR &&
+	    skb->len >= sizeof(*rxdesc))
+		hostap_dump_rx_header(dev->name, rxdesc);
+
+	if (le16_to_cpu(rxdesc->status) & HFA384X_RX_STATUS_FCSERR &&
+	    (!local->monitor_allow_fcserr ||
+	     local->iw_mode != IW_MODE_MONITOR))
+		goto drop;
+
+	if (skb->len > PRISM2_DATA_MAXLEN) {
+		printk(KERN_DEBUG "%s: RX: len(%d) > MAX(%d)\n",
+		       dev->name, skb->len, PRISM2_DATA_MAXLEN);
+		goto drop;
+	}
+
+	stats.mac_time = le32_to_cpu(rxdesc->time);
+	stats.signal = rxdesc->signal - local->rssi_to_dBm;
+	stats.noise = rxdesc->silence - local->rssi_to_dBm;
+	stats.rate = rxdesc->rate;
+
+	/* Convert Prism2 RX structure into IEEE 802.11 header */
+	hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(rxdesc->frame_control));
+	if (hdrlen > rx_hdrlen)
+		hdrlen = rx_hdrlen;
+
+	memmove(skb_pull(skb, rx_hdrlen - hdrlen),
+		&rxdesc->frame_control, hdrlen);
+
+	hostap_80211_rx(dev, skb, &stats);
+	return;
+
+ drop:
+	dev_kfree_skb(skb);
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void hostap_rx_tasklet(unsigned long data)
+{
+	local_info_t *local = (local_info_t *) data;
+	struct sk_buff *skb;
+
+	while ((skb = skb_dequeue(&local->rx_list)) != NULL)
+		hostap_rx_skb(local, skb);
+}
+
+
+/* Called only from hardware IRQ */
+static void prism2_alloc_ev(struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int idx;
+	u16 fid;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	fid = prism2_read_fid_reg(dev, HFA384X_ALLOCFID_OFF);
+
+	PDEBUG(DEBUG_FID, "FID: interrupt: ALLOC - fid=0x%04x\n", fid);
+
+	spin_lock(&local->txfidlock);
+	idx = local->next_alloc;
+
+	do {
+		if (local->txfid[idx] == fid) {
+			PDEBUG(DEBUG_FID, "FID: found matching txfid[%d]\n",
+			       idx);
+
+#ifndef final_version
+			if (local->intransmitfid[idx] == PRISM2_TXFID_EMPTY)
+				printk("Already released txfid found at idx "
+				       "%d\n", idx);
+			if (local->intransmitfid[idx] == PRISM2_TXFID_RESERVED)
+				printk("Already reserved txfid found at idx "
+				       "%d\n", idx);
+#endif
+			local->intransmitfid[idx] = PRISM2_TXFID_EMPTY;
+			idx++;
+			local->next_alloc = idx >= PRISM2_TXFID_COUNT ? 0 :
+				idx;
+
+			if (!test_bit(HOSTAP_BITS_TRANSMIT, &local->bits) &&
+			    netif_queue_stopped(dev))
+				netif_wake_queue(dev);
+
+			spin_unlock(&local->txfidlock);
+			return;
+		}
+
+		idx++;
+		if (idx >= PRISM2_TXFID_COUNT)
+			idx = 0;
+	} while (idx != local->next_alloc);
+
+	printk(KERN_WARNING "%s: could not find matching txfid (0x%04x, new "
+	       "read 0x%04x) for alloc event\n", dev->name, fid,
+	       HFA384X_INW(HFA384X_ALLOCFID_OFF));
+	printk(KERN_DEBUG "TXFIDs:");
+	for (idx = 0; idx < PRISM2_TXFID_COUNT; idx++)
+		printk(" %04x[%04x]", local->txfid[idx],
+		       local->intransmitfid[idx]);
+	printk("\n");
+	spin_unlock(&local->txfidlock);
+
+	/* FIX: should probably schedule reset; reference to one txfid was lost
+	 * completely.. Bad things will happen if we run out of txfids
+	 * Actually, this will cause netdev watchdog to notice TX timeout and
+	 * then card reset after all txfids have been leaked. */
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void hostap_tx_callback(local_info_t *local,
+			       struct hfa384x_tx_frame *txdesc, int ok,
+			       char *payload)
+{
+	u16 sw_support, hdrlen, len;
+	struct sk_buff *skb;
+	struct hostap_tx_callback_info *cb;
+
+	/* Make sure that frame was from us. */
+	if (memcmp(txdesc->addr2, local->dev->dev_addr, ETH_ALEN)) {
+		printk(KERN_DEBUG "%s: TX callback - foreign frame\n",
+		       local->dev->name);
+		return;
+	}
+
+	sw_support = le16_to_cpu(txdesc->sw_support);
+
+	spin_lock(&local->lock);
+	cb = local->tx_callback;
+	while (cb != NULL && cb->idx != sw_support)
+		cb = cb->next;
+	spin_unlock(&local->lock);
+
+	if (cb == NULL) {
+		printk(KERN_DEBUG "%s: could not find TX callback (idx %d)\n",
+		       local->dev->name, sw_support);
+		return;
+	}
+
+	hdrlen = hostap_80211_get_hdrlen(le16_to_cpu(txdesc->frame_control));
+	len = le16_to_cpu(txdesc->data_len);
+	skb = dev_alloc_skb(hdrlen + len);
+	if (skb == NULL) {
+		printk(KERN_DEBUG "%s: hostap_tx_callback failed to allocate "
+		       "skb\n", local->dev->name);
+		return;
+	}
+
+	memcpy(skb_put(skb, hdrlen), (void *) &txdesc->frame_control, hdrlen);
+	if (payload)
+		memcpy(skb_put(skb, len), payload, len);
+
+	skb->dev = local->dev;
+	skb->mac.raw = skb->data;
+
+	cb->func(skb, ok, cb->data);
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static int hostap_tx_compl_read(local_info_t *local, int error,
+				struct hfa384x_tx_frame *txdesc,
+				char **payload)
+{
+	u16 fid, len;
+	int res, ret = 0;
+	struct net_device *dev = local->dev;
+
+	fid = prism2_read_fid_reg(dev, HFA384X_TXCOMPLFID_OFF);
+
+	PDEBUG(DEBUG_FID, "interrupt: TX (err=%d) - fid=0x%04x\n", fid, error);
+
+	spin_lock(&local->baplock);
+	res = hfa384x_setup_bap(dev, BAP0, fid, 0);
+	if (!res)
+		res = hfa384x_from_bap(dev, BAP0, txdesc, sizeof(*txdesc));
+	if (res) {
+		PDEBUG(DEBUG_EXTRA, "%s: TX (err=%d) - fid=0x%04x - could not "
+		       "read txdesc\n", dev->name, error, fid);
+		if (res == -ETIMEDOUT) {
+			schedule_work(&local->reset_queue);
+		}
+		ret = -1;
+		goto fail;
+	}
+	if (txdesc->sw_support) {
+		len = le16_to_cpu(txdesc->data_len);
+		if (len < PRISM2_DATA_MAXLEN) {
+			*payload = (char *) kmalloc(len, GFP_ATOMIC);
+			if (*payload == NULL ||
+			    hfa384x_from_bap(dev, BAP0, *payload, len)) {
+				PDEBUG(DEBUG_EXTRA, "%s: could not read TX "
+				       "frame payload\n", dev->name);
+				kfree(*payload);
+				*payload = NULL;
+				ret = -1;
+				goto fail;
+			}
+		}
+	}
+
+ fail:
+	spin_unlock(&local->baplock);
+
+	return ret;
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void prism2_tx_ev(local_info_t *local)
+{
+	struct net_device *dev = local->dev;
+	char *payload = NULL;
+	struct hfa384x_tx_frame txdesc;
+
+	if (hostap_tx_compl_read(local, 0, &txdesc, &payload))
+		goto fail;
+
+	if (local->frame_dump & PRISM2_DUMP_TX_HDR) {
+		PDEBUG(DEBUG_EXTRA, "%s: TX - status=0x%04x "
+		       "retry_count=%d tx_rate=%d seq_ctrl=%d "
+		       "duration_id=%d\n",
+		       dev->name, le16_to_cpu(txdesc.status),
+		       txdesc.retry_count, txdesc.tx_rate,
+		       le16_to_cpu(txdesc.seq_ctrl),
+		       le16_to_cpu(txdesc.duration_id));
+	}
+
+	if (txdesc.sw_support)
+		hostap_tx_callback(local, &txdesc, 1, payload);
+	kfree(payload);
+
+ fail:
+	HFA384X_OUTW(HFA384X_EV_TX, HFA384X_EVACK_OFF);
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void hostap_sta_tx_exc_tasklet(unsigned long data)
+{
+	local_info_t *local = (local_info_t *) data;
+	struct sk_buff *skb;
+
+	while ((skb = skb_dequeue(&local->sta_tx_exc_list)) != NULL) {
+		struct hfa384x_tx_frame *txdesc =
+			(struct hfa384x_tx_frame *) skb->data;
+
+		if (skb->len >= sizeof(*txdesc)) {
+			/* Convert Prism2 RX structure into IEEE 802.11 header
+			 */
+			u16 fc = le16_to_cpu(txdesc->frame_control);
+			int hdrlen = hostap_80211_get_hdrlen(fc);
+			memmove(skb_pull(skb, sizeof(*txdesc) - hdrlen),
+				&txdesc->frame_control, hdrlen);
+
+			hostap_handle_sta_tx_exc(local, skb);
+		}
+		dev_kfree_skb(skb);
+	}
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void prism2_txexc(local_info_t *local)
+{
+	struct net_device *dev = local->dev;
+	u16 status, fc;
+	int show_dump, res;
+	char *payload = NULL;
+	struct hfa384x_tx_frame txdesc;
+
+	show_dump = local->frame_dump & PRISM2_DUMP_TXEXC_HDR;
+	local->stats.tx_errors++;
+
+	res = hostap_tx_compl_read(local, 1, &txdesc, &payload);
+	HFA384X_OUTW(HFA384X_EV_TXEXC, HFA384X_EVACK_OFF);
+	if (res)
+		return;
+
+	status = le16_to_cpu(txdesc.status);
+
+	/* We produce a TXDROP event only for retry or lifetime
+	 * exceeded, because that's the only status that really mean
+	 * that this particular node went away.
+	 * Other errors means that *we* screwed up. - Jean II */
+	if (status & (HFA384X_TX_STATUS_RETRYERR | HFA384X_TX_STATUS_AGEDERR))
+	{
+		union iwreq_data wrqu;
+
+		/* Copy 802.11 dest address. */
+		memcpy(wrqu.addr.sa_data, txdesc.addr1, ETH_ALEN);
+		wrqu.addr.sa_family = ARPHRD_ETHER;
+		wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
+	} else
+		show_dump = 1;
+
+	if (local->iw_mode == IW_MODE_MASTER ||
+	    local->iw_mode == IW_MODE_REPEAT ||
+	    local->wds_type & HOSTAP_WDS_AP_CLIENT) {
+		struct sk_buff *skb;
+		skb = dev_alloc_skb(sizeof(txdesc));
+		if (skb) {
+			memcpy(skb_put(skb, sizeof(txdesc)), &txdesc,
+			       sizeof(txdesc));
+			skb_queue_tail(&local->sta_tx_exc_list, skb);
+			tasklet_schedule(&local->sta_tx_exc_tasklet);
+		}
+	}
+
+	if (txdesc.sw_support)
+		hostap_tx_callback(local, &txdesc, 0, payload);
+	kfree(payload);
+
+	if (!show_dump)
+		return;
+
+	PDEBUG(DEBUG_EXTRA, "%s: TXEXC - status=0x%04x (%s%s%s%s)"
+	       " tx_control=%04x\n",
+	       dev->name, status,
+	       status & HFA384X_TX_STATUS_RETRYERR ? "[RetryErr]" : "",
+	       status & HFA384X_TX_STATUS_AGEDERR ? "[AgedErr]" : "",
+	       status & HFA384X_TX_STATUS_DISCON ? "[Discon]" : "",
+	       status & HFA384X_TX_STATUS_FORMERR ? "[FormErr]" : "",
+	       le16_to_cpu(txdesc.tx_control));
+
+	fc = le16_to_cpu(txdesc.frame_control);
+	PDEBUG(DEBUG_EXTRA, "   retry_count=%d tx_rate=%d fc=0x%04x "
+	       "(%s%s%s::%d%s%s)\n",
+	       txdesc.retry_count, txdesc.tx_rate, fc,
+	       WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT ? "Mgmt" : "",
+	       WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_CTRL ? "Ctrl" : "",
+	       WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA ? "Data" : "",
+	       WLAN_FC_GET_STYPE(fc),
+	       fc & WLAN_FC_TODS ? " ToDS" : "",
+	       fc & WLAN_FC_FROMDS ? " FromDS" : "");
+	PDEBUG(DEBUG_EXTRA, "   A1=" MACSTR " A2=" MACSTR " A3="
+	       MACSTR " A4=" MACSTR "\n",
+	       MAC2STR(txdesc.addr1), MAC2STR(txdesc.addr2),
+	       MAC2STR(txdesc.addr3), MAC2STR(txdesc.addr4));
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void hostap_info_tasklet(unsigned long data)
+{
+	local_info_t *local = (local_info_t *) data;
+	struct sk_buff *skb;
+
+	while ((skb = skb_dequeue(&local->info_list)) != NULL) {
+		hostap_info_process(local, skb);
+		dev_kfree_skb(skb);
+	}
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void prism2_info(local_info_t *local)
+{
+	struct net_device *dev = local->dev;
+	u16 fid;
+	int res, left;
+	struct hfa384x_info_frame info;
+	struct sk_buff *skb;
+
+	fid = HFA384X_INW(HFA384X_INFOFID_OFF);
+
+	spin_lock(&local->baplock);
+	res = hfa384x_setup_bap(dev, BAP0, fid, 0);
+	if (!res)
+		res = hfa384x_from_bap(dev, BAP0, &info, sizeof(info));
+	if (res) {
+		spin_unlock(&local->baplock);
+		printk(KERN_DEBUG "Could not get info frame (fid=0x%04x)\n",
+		       fid);
+		if (res == -ETIMEDOUT) {
+			schedule_work(&local->reset_queue);
+		}
+		goto out;
+	}
+
+	le16_to_cpus(&info.len);
+	le16_to_cpus(&info.type);
+	left = (info.len - 1) * 2;
+
+	if (info.len & 0x8000 || info.len == 0 || left > 2060) {
+		/* data register seems to give 0x8000 in some error cases even
+		 * though busy bit is not set in offset register;
+		 * in addition, length must be at least 1 due to type field */
+		spin_unlock(&local->baplock);
+		printk(KERN_DEBUG "%s: Received info frame with invalid "
+		       "length 0x%04x (type 0x%04x)\n", dev->name, info.len,
+		       info.type);
+		goto out;
+	}
+
+	skb = dev_alloc_skb(sizeof(info) + left);
+	if (skb == NULL) {
+		spin_unlock(&local->baplock);
+		printk(KERN_DEBUG "%s: Could not allocate skb for info "
+		       "frame\n", dev->name);
+		goto out;
+	}
+
+	memcpy(skb_put(skb, sizeof(info)), &info, sizeof(info));
+	if (left > 0 && hfa384x_from_bap(dev, BAP0, skb_put(skb, left), left))
+	{
+		spin_unlock(&local->baplock);
+		printk(KERN_WARNING "%s: Info frame read failed (fid=0x%04x, "
+		       "len=0x%04x, type=0x%04x\n",
+		       dev->name, fid, info.len, info.type);
+		dev_kfree_skb(skb);
+		goto out;
+	}
+	spin_unlock(&local->baplock);
+
+	skb_queue_tail(&local->info_list, skb);
+	tasklet_schedule(&local->info_tasklet);
+
+ out:
+	HFA384X_OUTW(HFA384X_EV_INFO, HFA384X_EVACK_OFF);
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static void hostap_bap_tasklet(unsigned long data)
+{
+	local_info_t *local = (local_info_t *) data;
+	struct net_device *dev = local->dev;
+	u16 ev;
+	int frames = 30;
+
+	if (local->func->card_present && !local->func->card_present(local))
+		return;
+
+	set_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
+
+	/* Process all pending BAP events without generating new interrupts
+	 * for them */
+	while (frames-- > 0) {
+		ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
+		if (ev == 0xffff || !(ev & HFA384X_BAP0_EVENTS))
+			break;
+		if (ev & HFA384X_EV_RX)
+			prism2_rx(local);
+		if (ev & HFA384X_EV_INFO)
+			prism2_info(local);
+		if (ev & HFA384X_EV_TX)
+			prism2_tx_ev(local);
+		if (ev & HFA384X_EV_TXEXC)
+			prism2_txexc(local);
+	}
+
+	set_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
+	clear_bit(HOSTAP_BITS_BAP_TASKLET, &local->bits);
+
+	/* Enable interrupts for new BAP events */
+	hfa384x_events_all(dev);
+	clear_bit(HOSTAP_BITS_BAP_TASKLET2, &local->bits);
+}
+
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+/* Called only from hardware IRQ */
+static void prism2_bus_master_ev(struct net_device *dev, int bap)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (bap == BAP1) {
+		/* FIX: frame payload was DMA'd to skb->data; might need to
+		 * invalidate data cache for that memory area */
+		skb_queue_tail(&local->rx_list, local->rx_skb);
+		tasklet_schedule(&local->rx_tasklet);
+		HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF);
+	} else {
+		if (prism2_transmit(dev, local->bus_m0_tx_idx)) {
+			printk(KERN_DEBUG "%s: prism2_transmit() failed "
+			       "when called from bus master event\n",
+			       dev->name);
+			local->intransmitfid[local->bus_m0_tx_idx] =
+				PRISM2_TXFID_EMPTY;
+			schedule_work(&local->reset_queue);
+		}
+	}
+}
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+
+
+/* Called only from hardware IRQ */
+static void prism2_infdrop(struct net_device *dev)
+{
+	static unsigned long last_inquire = 0;
+
+	PDEBUG(DEBUG_EXTRA, "%s: INFDROP event\n", dev->name);
+
+	/* some firmware versions seem to get stuck with
+	 * full CommTallies in high traffic load cases; every
+	 * packet will then cause INFDROP event and CommTallies
+	 * info frame will not be sent automatically. Try to
+	 * get out of this state by inquiring CommTallies. */
+	if (!last_inquire || time_after(jiffies, last_inquire + HZ)) {
+		hfa384x_cmd_callback(dev, HFA384X_CMDCODE_INQUIRE,
+				     HFA384X_INFO_COMMTALLIES, NULL, NULL);
+		last_inquire = jiffies;
+	}
+}
+
+
+/* Called only from hardware IRQ */
+static void prism2_ev_tick(struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	u16 evstat, inten;
+	static int prev_stuck = 0;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	if (time_after(jiffies, local->last_tick_timer + 5 * HZ) &&
+	    local->last_tick_timer) {
+		evstat = HFA384X_INW(HFA384X_EVSTAT_OFF);
+		inten = HFA384X_INW(HFA384X_INTEN_OFF);
+		if (!prev_stuck) {
+			printk(KERN_INFO "%s: SW TICK stuck? "
+			       "bits=0x%lx EvStat=%04x IntEn=%04x\n",
+			       dev->name, local->bits, evstat, inten);
+		}
+		local->sw_tick_stuck++;
+		if ((evstat & HFA384X_BAP0_EVENTS) &&
+		    (inten & HFA384X_BAP0_EVENTS)) {
+			printk(KERN_INFO "%s: trying to recover from IRQ "
+			       "hang\n", dev->name);
+			hfa384x_events_no_bap0(dev);
+		}
+		prev_stuck = 1;
+	} else
+		prev_stuck = 0;
+}
+
+
+/* Called only from hardware IRQ */
+static inline void prism2_check_magic(local_info_t *local)
+{
+	/* at least PCI Prism2.5 with bus mastering seems to sometimes
+	 * return 0x0000 in SWSUPPORT0 for unknown reason, but re-reading the
+	 * register once or twice seems to get the correct value.. PCI cards
+	 * cannot anyway be removed during normal operation, so there is not
+	 * really any need for this verification with them. */
+
+#ifndef PRISM2_PCI
+#ifndef final_version
+	static unsigned long last_magic_err = 0;
+	struct net_device *dev = local->dev;
+
+	if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != HFA384X_MAGIC) {
+		if (!local->hw_ready)
+			return;
+		HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
+		if (time_after(jiffies, last_magic_err + 10 * HZ)) {
+			printk("%s: Interrupt, but SWSUPPORT0 does not match: "
+			       "%04X != %04X - card removed?\n", dev->name,
+			       HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
+			       HFA384X_MAGIC);
+			last_magic_err = jiffies;
+		} else if (net_ratelimit()) {
+			printk(KERN_DEBUG "%s: interrupt - SWSUPPORT0=%04x "
+			       "MAGIC=%04x\n", dev->name,
+			       HFA384X_INW(HFA384X_SWSUPPORT0_OFF),
+			       HFA384X_MAGIC);
+		}
+		if (HFA384X_INW(HFA384X_SWSUPPORT0_OFF) != 0xffff)
+			schedule_work(&local->reset_queue);
+		return;
+	}
+#endif /* final_version */
+#endif /* !PRISM2_PCI */
+}
+
+
+/* Called only from hardware IRQ */
+static irqreturn_t prism2_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct net_device *dev = (struct net_device *) dev_id;
+	struct hostap_interface *iface;
+	local_info_t *local;
+	int events = 0;
+	u16 ev;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 0);
+
+	if (local->func->card_present && !local->func->card_present(local)) {
+		if (net_ratelimit()) {
+			printk(KERN_DEBUG "%s: Interrupt, but dev not OK\n",
+			       dev->name);
+		}
+		return IRQ_HANDLED;
+	}
+
+	prism2_check_magic(local);
+
+	for (;;) {
+		ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
+		if (ev == 0xffff) {
+			if (local->shutdown)
+				return IRQ_HANDLED;
+			HFA384X_OUTW(0xffff, HFA384X_EVACK_OFF);
+			printk(KERN_DEBUG "%s: prism2_interrupt: ev=0xffff\n",
+			       dev->name);
+			return IRQ_HANDLED;
+		}
+
+		ev &= HFA384X_INW(HFA384X_INTEN_OFF);
+		if (ev == 0)
+			break;
+
+		if (ev & HFA384X_EV_CMD) {
+			prism2_cmd_ev(dev);
+		}
+
+		/* Above events are needed even before hw is ready, but other
+		 * events should be skipped during initialization. This may
+		 * change for AllocEv if allocate_fid is implemented without
+		 * busy waiting. */
+		if (!local->hw_ready || local->hw_resetting ||
+		    !local->dev_enabled) {
+			ev = HFA384X_INW(HFA384X_EVSTAT_OFF);
+			if (ev & HFA384X_EV_CMD)
+				goto next_event;
+			if ((ev & HFA384X_EVENT_MASK) == 0)
+				return IRQ_HANDLED;
+			if (local->dev_enabled && (ev & ~HFA384X_EV_TICK) &&
+			    net_ratelimit()) {
+				printk(KERN_DEBUG "%s: prism2_interrupt: hw "
+				       "not ready; skipping events 0x%04x "
+				       "(IntEn=0x%04x)%s%s%s\n",
+				       dev->name, ev,
+				       HFA384X_INW(HFA384X_INTEN_OFF),
+				       !local->hw_ready ? " (!hw_ready)" : "",
+				       local->hw_resetting ?
+				       " (hw_resetting)" : "",
+				       !local->dev_enabled ?
+				       " (!dev_enabled)" : "");
+			}
+			HFA384X_OUTW(ev, HFA384X_EVACK_OFF);
+			return IRQ_HANDLED;
+		}
+
+		if (ev & HFA384X_EV_TICK) {
+			prism2_ev_tick(dev);
+			HFA384X_OUTW(HFA384X_EV_TICK, HFA384X_EVACK_OFF);
+		}
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+		if (ev & HFA384X_EV_PCI_M0) {
+			prism2_bus_master_ev(dev, BAP0);
+			HFA384X_OUTW(HFA384X_EV_PCI_M0, HFA384X_EVACK_OFF);
+		}
+
+		if (ev & HFA384X_EV_PCI_M1) {
+			/* previous RX has been copied can be ACKed now */
+			HFA384X_OUTW(HFA384X_EV_RX, HFA384X_EVACK_OFF);
+
+			prism2_bus_master_ev(dev, BAP1);
+			HFA384X_OUTW(HFA384X_EV_PCI_M1, HFA384X_EVACK_OFF);
+		}
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+
+		if (ev & HFA384X_EV_ALLOC) {
+			prism2_alloc_ev(dev);
+			HFA384X_OUTW(HFA384X_EV_ALLOC, HFA384X_EVACK_OFF);
+		}
+
+		/* Reading data from the card is quite time consuming, so do it
+		 * in tasklets. TX, TXEXC, RX, and INFO events will be ACKed
+		 * and unmasked after needed data has been read completely. */
+		if (ev & HFA384X_BAP0_EVENTS) {
+			hfa384x_events_no_bap0(dev);
+			tasklet_schedule(&local->bap_tasklet);
+		}
+
+#ifndef final_version
+		if (ev & HFA384X_EV_WTERR) {
+			PDEBUG(DEBUG_EXTRA, "%s: WTERR event\n", dev->name);
+			HFA384X_OUTW(HFA384X_EV_WTERR, HFA384X_EVACK_OFF);
+		}
+#endif /* final_version */
+
+		if (ev & HFA384X_EV_INFDROP) {
+			prism2_infdrop(dev);
+			HFA384X_OUTW(HFA384X_EV_INFDROP, HFA384X_EVACK_OFF);
+		}
+
+	next_event:
+		events++;
+		if (events >= PRISM2_MAX_INTERRUPT_EVENTS) {
+			PDEBUG(DEBUG_EXTRA, "prism2_interrupt: >%d events "
+			       "(EvStat=0x%04x)\n",
+			       PRISM2_MAX_INTERRUPT_EVENTS,
+			       HFA384X_INW(HFA384X_EVSTAT_OFF));
+			break;
+		}
+	}
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INTERRUPT, 0, 1);
+	return IRQ_RETVAL(events);
+}
+
+
+static void prism2_check_sta_fw_version(local_info_t *local)
+{
+	struct hfa384x_comp_ident comp;
+	int id, variant, major, minor;
+
+	if (hfa384x_get_rid(local->dev, HFA384X_RID_STAID,
+			    &comp, sizeof(comp), 1) < 0)
+		return;
+
+	local->fw_ap = 0;
+	id = le16_to_cpu(comp.id);
+	if (id != HFA384X_COMP_ID_STA) {
+		if (id == HFA384X_COMP_ID_FW_AP)
+			local->fw_ap = 1;
+		return;
+	}
+
+	major = __le16_to_cpu(comp.major);
+	minor = __le16_to_cpu(comp.minor);
+	variant = __le16_to_cpu(comp.variant);
+	local->sta_fw_ver = PRISM2_FW_VER(major, minor, variant);
+
+	/* Station firmware versions before 1.4.x seem to have a bug in
+	 * firmware-based WEP encryption when using Host AP mode, so use
+	 * host_encrypt as a default for them. Firmware version 1.4.9 is the
+	 * first one that has been seen to produce correct encryption, but the
+	 * bug might be fixed before that (although, at least 1.4.2 is broken).
+	 */
+	local->fw_encrypt_ok = local->sta_fw_ver >= PRISM2_FW_VER(1,4,9);
+
+	if (local->iw_mode == IW_MODE_MASTER && !local->host_encrypt &&
+	    !local->fw_encrypt_ok) {
+		printk(KERN_DEBUG "%s: defaulting to host-based encryption as "
+		       "a workaround for firmware bug in Host AP mode WEP\n",
+		       local->dev->name);
+		local->host_encrypt = 1;
+	}
+
+	/* IEEE 802.11 standard compliant WDS frames (4 addresses) were broken
+	 * in station firmware versions before 1.5.x. With these versions, the
+	 * driver uses a workaround with bogus frame format (4th address after
+	 * the payload). This is not compatible with other AP devices. Since
+	 * the firmware bug is fixed in the latest station firmware versions,
+	 * automatically enable standard compliant mode for cards using station
+	 * firmware version 1.5.0 or newer. */
+	if (local->sta_fw_ver >= PRISM2_FW_VER(1,5,0))
+		local->wds_type |= HOSTAP_WDS_STANDARD_FRAME;
+	else {
+		printk(KERN_DEBUG "%s: defaulting to bogus WDS frame as a "
+		       "workaround for firmware bug in Host AP mode WDS\n",
+		       local->dev->name);
+	}
+
+	hostap_check_sta_fw_version(local->ap, local->sta_fw_ver);
+}
+
+
+static void prism2_crypt_deinit_entries(local_info_t *local, int force)
+{
+	struct list_head *ptr, *n;
+	struct prism2_crypt_data *entry;
+
+	for (ptr = local->crypt_deinit_list.next, n = ptr->next;
+	     ptr != &local->crypt_deinit_list; ptr = n, n = ptr->next) {
+		entry = list_entry(ptr, struct prism2_crypt_data, list);
+
+		if (atomic_read(&entry->refcnt) != 0 && !force)
+			continue;
+
+		list_del(ptr);
+
+		if (entry->ops)
+			entry->ops->deinit(entry->priv);
+		kfree(entry);
+	}
+}
+
+
+static void prism2_crypt_deinit_handler(unsigned long data)
+{
+	local_info_t *local = (local_info_t *) data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_crypt_deinit_entries(local, 0);
+	if (!list_empty(&local->crypt_deinit_list)) {
+		printk(KERN_DEBUG "%s: entries remaining in delayed crypt "
+		       "deletion list\n", local->dev->name);
+		local->crypt_deinit_timer.expires = jiffies + HZ;
+		add_timer(&local->crypt_deinit_timer);
+	}
+	spin_unlock_irqrestore(&local->lock, flags);
+
+}
+
+
+static void hostap_passive_scan(unsigned long data)
+{
+	local_info_t *local = (local_info_t *) data;
+	struct net_device *dev = local->dev;
+	u16 channel;
+
+	if (local->passive_scan_interval <= 0)
+		return;
+
+	if (local->passive_scan_state == PASSIVE_SCAN_LISTEN) {
+		int max_tries = 16;
+
+		/* Even though host system does not really know when the WLAN
+		 * MAC is sending frames, try to avoid changing channels for
+		 * passive scanning when a host-generated frame is being
+		 * transmitted */
+		if (test_bit(HOSTAP_BITS_TRANSMIT, &local->bits)) {
+			printk(KERN_DEBUG "%s: passive scan detected pending "
+			       "TX - delaying\n", dev->name);
+			local->passive_scan_timer.expires = jiffies + HZ / 10;
+			add_timer(&local->passive_scan_timer);
+			return;
+		}
+
+		do {
+			local->passive_scan_channel++;
+			if (local->passive_scan_channel > 14)
+				local->passive_scan_channel = 1;
+			max_tries--;
+		} while (!(local->channel_mask &
+			   (1 << (local->passive_scan_channel - 1))) &&
+			 max_tries > 0);
+
+		if (max_tries == 0) {
+			printk(KERN_INFO "%s: no allowed passive scan channels"
+			       " found\n", dev->name);
+			return;
+		}
+
+		printk(KERN_DEBUG "%s: passive scan channel %d\n",
+		       dev->name, local->passive_scan_channel);
+		channel = local->passive_scan_channel;
+		local->passive_scan_state = PASSIVE_SCAN_WAIT;
+		local->passive_scan_timer.expires = jiffies + HZ / 10;
+	} else {
+		channel = local->channel;
+		local->passive_scan_state = PASSIVE_SCAN_LISTEN;
+		local->passive_scan_timer.expires = jiffies +
+			local->passive_scan_interval * HZ;
+	}
+
+	if (hfa384x_cmd_callback(dev, HFA384X_CMDCODE_TEST |
+				 (HFA384X_TEST_CHANGE_CHANNEL << 8),
+				 channel, NULL, NULL))
+		printk(KERN_ERR "%s: passive scan channel set %d "
+		       "failed\n", dev->name, channel);
+
+	add_timer(&local->passive_scan_timer);
+}
+
+
+/* Called only as a scheduled task when communications quality values should
+ * be updated. */
+static void handle_comms_qual_update(void *data)
+{
+	local_info_t *local = data;
+	prism2_update_comms_qual(local->dev);
+}
+
+
+/* Software watchdog - called as a timer. Hardware interrupt (Tick event) is
+ * used to monitor that local->last_tick_timer is being updated. If not,
+ * interrupt busy-loop is assumed and driver tries to recover by masking out
+ * some events. */
+static void hostap_tick_timer(unsigned long data)
+{
+	static unsigned long last_inquire = 0;
+	local_info_t *local = (local_info_t *) data;
+	local->last_tick_timer = jiffies;
+
+	/* Inquire CommTallies every 10 seconds to keep the statistics updated
+	 * more often during low load and when using 32-bit tallies. */
+	if ((!last_inquire || time_after(jiffies, last_inquire + 10 * HZ)) &&
+	    !local->hw_downloading && local->hw_ready &&
+	    !local->hw_resetting && local->dev_enabled) {
+		hfa384x_cmd_callback(local->dev, HFA384X_CMDCODE_INQUIRE,
+				     HFA384X_INFO_COMMTALLIES, NULL, NULL);
+		last_inquire = jiffies;
+	}
+
+	if ((local->last_comms_qual_update == 0 ||
+	     time_after(jiffies, local->last_comms_qual_update + 10 * HZ)) &&
+	    (local->iw_mode == IW_MODE_INFRA ||
+	     local->iw_mode == IW_MODE_ADHOC)) {
+		schedule_work(&local->comms_qual_update);
+	}
+
+	local->tick_timer.expires = jiffies + 2 * HZ;
+	add_timer(&local->tick_timer);
+}
+
+
+#ifndef PRISM2_NO_PROCFS_DEBUG
+static int prism2_registers_proc_read(char *page, char **start, off_t off,
+				      int count, int *eof, void *data)
+{
+	char *p = page;
+	local_info_t *local = (local_info_t *) data;
+
+	if (off != 0) {
+		*eof = 1;
+		return 0;
+	}
+
+#define SHOW_REG(n) \
+p += sprintf(p, #n "=%04x\n", hfa384x_read_reg(local->dev, HFA384X_##n##_OFF))
+
+	SHOW_REG(CMD);
+	SHOW_REG(PARAM0);
+	SHOW_REG(PARAM1);
+	SHOW_REG(PARAM2);
+	SHOW_REG(STATUS);
+	SHOW_REG(RESP0);
+	SHOW_REG(RESP1);
+	SHOW_REG(RESP2);
+	SHOW_REG(INFOFID);
+	SHOW_REG(CONTROL);
+	SHOW_REG(SELECT0);
+	SHOW_REG(SELECT1);
+	SHOW_REG(OFFSET0);
+	SHOW_REG(OFFSET1);
+	SHOW_REG(RXFID);
+	SHOW_REG(ALLOCFID);
+	SHOW_REG(TXCOMPLFID);
+	SHOW_REG(SWSUPPORT0);
+	SHOW_REG(SWSUPPORT1);
+	SHOW_REG(SWSUPPORT2);
+	SHOW_REG(EVSTAT);
+	SHOW_REG(INTEN);
+	SHOW_REG(EVACK);
+	/* Do not read data registers, because they change the state of the
+	 * MAC (offset += 2) */
+	/* SHOW_REG(DATA0); */
+	/* SHOW_REG(DATA1); */
+	SHOW_REG(AUXPAGE);
+	SHOW_REG(AUXOFFSET);
+	/* SHOW_REG(AUXDATA); */
+#ifdef PRISM2_PCI
+	SHOW_REG(PCICOR);
+	SHOW_REG(PCIHCR);
+	SHOW_REG(PCI_M0_ADDRH);
+	SHOW_REG(PCI_M0_ADDRL);
+	SHOW_REG(PCI_M0_LEN);
+	SHOW_REG(PCI_M0_CTL);
+	SHOW_REG(PCI_STATUS);
+	SHOW_REG(PCI_M1_ADDRH);
+	SHOW_REG(PCI_M1_ADDRL);
+	SHOW_REG(PCI_M1_LEN);
+	SHOW_REG(PCI_M1_CTL);
+#endif /* PRISM2_PCI */
+
+	return (p - page);
+}
+#endif /* PRISM2_NO_PROCFS_DEBUG */
+
+
+struct set_tim_data {
+	struct list_head list;
+	int aid;
+	int set;
+};
+
+static int prism2_set_tim(struct net_device *dev, int aid, int set)
+{
+	struct list_head *ptr;
+	struct set_tim_data *new_entry;
+	struct hostap_interface *iface;
+	local_info_t *local;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	new_entry = (struct set_tim_data *)
+		kmalloc(sizeof(*new_entry), GFP_ATOMIC);
+	if (new_entry == NULL) {
+		printk(KERN_DEBUG "%s: prism2_set_tim: kmalloc failed\n",
+		       local->dev->name);
+		return -ENOMEM;
+	}
+	memset(new_entry, 0, sizeof(*new_entry));
+	new_entry->aid = aid;
+	new_entry->set = set;
+
+	spin_lock_bh(&local->set_tim_lock);
+	list_for_each(ptr, &local->set_tim_list) {
+		struct set_tim_data *entry =
+			list_entry(ptr, struct set_tim_data, list);
+		if (entry->aid == aid) {
+			PDEBUG(DEBUG_PS2, "%s: prism2_set_tim: aid=%d "
+			       "set=%d ==> %d\n",
+			       local->dev->name, aid, entry->set, set);
+			entry->set = set;
+			kfree(new_entry);
+			new_entry = NULL;
+			break;
+		}
+	}
+	if (new_entry)
+		list_add_tail(&new_entry->list, &local->set_tim_list);
+	spin_unlock_bh(&local->set_tim_lock);
+
+	schedule_work(&local->set_tim_queue);
+
+	return 0;
+}
+
+
+static void handle_set_tim_queue(void *data)
+{
+	local_info_t *local = (local_info_t *) data;
+	struct set_tim_data *entry;
+	u16 val;
+
+	for (;;) {
+		entry = NULL;
+		spin_lock_bh(&local->set_tim_lock);
+		if (!list_empty(&local->set_tim_list)) {
+			entry = list_entry(local->set_tim_list.next,
+					   struct set_tim_data, list);
+			list_del(&entry->list);
+		}
+		spin_unlock_bh(&local->set_tim_lock);
+		if (!entry)
+			break;
+
+		PDEBUG(DEBUG_PS2, "%s: handle_set_tim_queue: aid=%d set=%d\n",
+		       local->dev->name, entry->aid, entry->set);
+
+		val = entry->aid;
+		if (entry->set)
+			val |= 0x8000;
+		if (hostap_set_word(local->dev, HFA384X_RID_CNFTIMCTRL, val)) {
+			printk(KERN_DEBUG "%s: set_tim failed (aid=%d "
+			       "set=%d)\n",
+			       local->dev->name, entry->aid, entry->set);
+		}
+
+		kfree(entry);
+	}
+}
+
+
+static void prism2_clear_set_tim_queue(local_info_t *local)
+{
+	struct list_head *ptr, *n;
+
+	list_for_each_safe(ptr, n, &local->set_tim_list) {
+		struct set_tim_data *entry;
+		entry = list_entry(ptr, struct set_tim_data, list);
+		list_del(&entry->list);
+		kfree(entry);
+	}
+}
+
+
+static struct net_device *
+prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx)
+{
+	struct net_device *dev;
+	struct hostap_interface *iface;
+	struct local_info *local;
+	int len, i, ret;
+
+	if (funcs == NULL)
+		return NULL;
+
+	len = strlen(dev_template);
+	if (len >= IFNAMSIZ || strstr(dev_template, "%d") == NULL) {
+		printk(KERN_WARNING "hostap: Invalid dev_template='%s'\n",
+		       dev_template);
+		return NULL;
+	}
+
+	len = sizeof(struct hostap_interface) +
+		3 + sizeof(struct local_info) +
+		3 + sizeof(struct ap_data);
+
+	dev = alloc_etherdev(len);
+	if (dev == NULL)
+		return NULL;
+
+	iface = netdev_priv(dev);
+	local = (struct local_info *) ((((long) (iface + 1)) + 3) & ~3);
+	local->ap = (struct ap_data *) ((((long) (local + 1)) + 3) & ~3);
+	local->dev = iface->dev = dev;
+	iface->local = local;
+	iface->type = HOSTAP_INTERFACE_MASTER;
+	INIT_LIST_HEAD(&local->hostap_interfaces);
+
+	local->hw_module = THIS_MODULE;
+
+#ifdef PRISM2_IO_DEBUG
+	local->io_debug_enabled = 1;
+#endif /* PRISM2_IO_DEBUG */
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+	local->bus_m0_buf = (u8 *) kmalloc(sizeof(struct hfa384x_tx_frame) +
+					   PRISM2_DATA_MAXLEN, GFP_DMA);
+	if (local->bus_m0_buf == NULL)
+		goto fail;
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+
+	local->func = funcs;
+	local->func->cmd = hfa384x_cmd;
+	local->func->read_regs = hfa384x_read_regs;
+	local->func->get_rid = hfa384x_get_rid;
+	local->func->set_rid = hfa384x_set_rid;
+	local->func->hw_enable = prism2_hw_enable;
+	local->func->hw_config = prism2_hw_config;
+	local->func->hw_reset = prism2_hw_reset;
+	local->func->hw_shutdown = prism2_hw_shutdown;
+	local->func->reset_port = prism2_reset_port;
+	local->func->schedule_reset = prism2_schedule_reset;
+#ifdef PRISM2_DOWNLOAD_SUPPORT
+	local->func->read_aux = prism2_download_aux_dump;
+	local->func->download = prism2_download;
+#endif /* PRISM2_DOWNLOAD_SUPPORT */
+	local->func->tx = prism2_tx_80211;
+	local->func->set_tim = prism2_set_tim;
+	local->func->need_tx_headroom = 0; /* no need to add txdesc in
+					    * skb->data (FIX: maybe for DMA bus
+					    * mastering? */
+
+	local->mtu = mtu;
+
+	rwlock_init(&local->iface_lock);
+	spin_lock_init(&local->txfidlock);
+	spin_lock_init(&local->cmdlock);
+	spin_lock_init(&local->baplock);
+	spin_lock_init(&local->lock);
+	init_MUTEX(&local->rid_bap_sem);
+
+	if (card_idx < 0 || card_idx >= MAX_PARM_DEVICES)
+		card_idx = 0;
+	local->card_idx = card_idx;
+
+	len = strlen(essid);
+	memcpy(local->essid, essid,
+	       len > MAX_SSID_LEN ? MAX_SSID_LEN : len);
+	local->essid[MAX_SSID_LEN] = '\0';
+	i = GET_INT_PARM(iw_mode, card_idx);
+	if ((i >= IW_MODE_ADHOC && i <= IW_MODE_REPEAT) ||
+	    i == IW_MODE_MONITOR) {
+		local->iw_mode = i;
+	} else {
+		printk(KERN_WARNING "prism2: Unknown iw_mode %d; using "
+		       "IW_MODE_MASTER\n", i);
+		local->iw_mode = IW_MODE_MASTER;
+	}
+	local->channel = GET_INT_PARM(channel, card_idx);
+	local->beacon_int = GET_INT_PARM(beacon_int, card_idx);
+	local->dtim_period = GET_INT_PARM(dtim_period, card_idx);
+	local->wds_max_connections = 16;
+	local->tx_control = HFA384X_TX_CTRL_FLAGS;
+	local->manual_retry_count = -1;
+	local->rts_threshold = 2347;
+	local->fragm_threshold = 2346;
+	local->rssi_to_dBm = 100; /* default; to be overriden by
+				   * cnfDbmAdjust, if available */
+	local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY;
+	local->sram_type = -1;
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+	local->bus_master_threshold_rx = GET_INT_PARM(bus_master_threshold_rx,
+						      card_idx);
+	local->bus_master_threshold_tx = GET_INT_PARM(bus_master_threshold_tx,
+						      card_idx);
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+
+	/* Initialize task queue structures */
+	INIT_WORK(&local->reset_queue, handle_reset_queue, local);
+	INIT_WORK(&local->set_multicast_list_queue,
+		  hostap_set_multicast_list_queue, local->dev);
+
+	INIT_WORK(&local->set_tim_queue, handle_set_tim_queue, local);
+	INIT_LIST_HEAD(&local->set_tim_list);
+	spin_lock_init(&local->set_tim_lock);
+
+	INIT_WORK(&local->comms_qual_update, handle_comms_qual_update, local);
+
+	/* Initialize tasklets for handling hardware IRQ related operations
+	 * outside hw IRQ handler */
+#define HOSTAP_TASKLET_INIT(q, f, d) \
+do { memset((q), 0, sizeof(*(q))); (q)->func = (f); (q)->data = (d); } \
+while (0)
+	HOSTAP_TASKLET_INIT(&local->bap_tasklet, hostap_bap_tasklet,
+			    (unsigned long) local);
+
+	HOSTAP_TASKLET_INIT(&local->info_tasklet, hostap_info_tasklet,
+			    (unsigned long) local);
+	hostap_info_init(local);
+
+	HOSTAP_TASKLET_INIT(&local->rx_tasklet,
+			    hostap_rx_tasklet, (unsigned long) local);
+	skb_queue_head_init(&local->rx_list);
+
+	HOSTAP_TASKLET_INIT(&local->sta_tx_exc_tasklet,
+			    hostap_sta_tx_exc_tasklet, (unsigned long) local);
+	skb_queue_head_init(&local->sta_tx_exc_list);
+
+	INIT_LIST_HEAD(&local->cmd_queue);
+	init_waitqueue_head(&local->hostscan_wq);
+	INIT_LIST_HEAD(&local->crypt_deinit_list);
+	init_timer(&local->crypt_deinit_timer);
+	local->crypt_deinit_timer.data = (unsigned long) local;
+	local->crypt_deinit_timer.function = prism2_crypt_deinit_handler;
+
+	init_timer(&local->passive_scan_timer);
+	local->passive_scan_timer.data = (unsigned long) local;
+	local->passive_scan_timer.function = hostap_passive_scan;
+
+	init_timer(&local->tick_timer);
+	local->tick_timer.data = (unsigned long) local;
+	local->tick_timer.function = hostap_tick_timer;
+	local->tick_timer.expires = jiffies + 2 * HZ;
+	add_timer(&local->tick_timer);
+
+	INIT_LIST_HEAD(&local->bss_list);
+
+	hostap_setup_dev(dev, local, 1);
+	local->saved_eth_header_parse = dev->hard_header_parse;
+
+	dev->hard_start_xmit = hostap_master_start_xmit;
+	dev->type = ARPHRD_IEEE80211;
+	dev->hard_header_parse = hostap_80211_header_parse;
+
+	rtnl_lock();
+	ret = dev_alloc_name(dev, "wifi%d");
+	if (ret >= 0)
+		ret = register_netdevice(dev);
+	rtnl_unlock();
+	if (ret < 0) {
+		printk(KERN_WARNING "%s: register netdevice failed!\n",
+		       dev_info);
+		goto fail;
+	}
+	printk(KERN_INFO "%s: Registered netdevice %s\n", dev_info, dev->name);
+
+#ifndef PRISM2_NO_PROCFS_DEBUG
+	create_proc_read_entry("registers", 0, local->proc,
+			       prism2_registers_proc_read, local);
+#endif /* PRISM2_NO_PROCFS_DEBUG */
+
+	hostap_init_data(local);
+	return dev;
+
+ fail:
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+	kfree(local->bus_m0_buf);
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+	free_netdev(dev);
+	return NULL;
+}
+
+
+static int hostap_hw_ready(struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	struct local_info *local;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+	local->ddev = hostap_add_interface(local, HOSTAP_INTERFACE_MAIN, 0,
+					   "", dev_template);
+
+	if (local->ddev) {
+		if (local->iw_mode == IW_MODE_INFRA ||
+		    local->iw_mode == IW_MODE_ADHOC) {
+			netif_carrier_off(local->dev);
+			netif_carrier_off(local->ddev);
+		}
+		hostap_init_proc(local);
+		hostap_init_ap_proc(local);
+		return 0;
+	}
+
+	return -1;
+}
+
+
+static void prism2_free_local_data(struct net_device *dev)
+{
+	struct hostap_tx_callback_info *tx_cb, *tx_cb_prev;
+	int i;
+	struct hostap_interface *iface;
+	struct local_info *local;
+	struct list_head *ptr, *n;
+
+	if (dev == NULL)
+		return;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	flush_scheduled_work();
+
+	if (timer_pending(&local->crypt_deinit_timer))
+		del_timer(&local->crypt_deinit_timer);
+	prism2_crypt_deinit_entries(local, 1);
+
+	if (timer_pending(&local->passive_scan_timer))
+		del_timer(&local->passive_scan_timer);
+
+	if (timer_pending(&local->tick_timer))
+		del_timer(&local->tick_timer);
+
+	prism2_clear_cmd_queue(local);
+
+	skb_queue_purge(&local->info_list);
+	skb_queue_purge(&local->rx_list);
+	skb_queue_purge(&local->sta_tx_exc_list);
+
+	if (local->dev_enabled)
+		prism2_callback(local, PRISM2_CALLBACK_DISABLE);
+
+	for (i = 0; i < WEP_KEYS; i++) {
+		struct prism2_crypt_data *crypt = local->crypt[i];
+		if (crypt) {
+			if (crypt->ops)
+				crypt->ops->deinit(crypt->priv);
+			kfree(crypt);
+			local->crypt[i] = NULL;
+		}
+	}
+
+	if (local->ap != NULL)
+		hostap_free_data(local->ap);
+
+#ifndef PRISM2_NO_PROCFS_DEBUG
+	if (local->proc != NULL)
+		remove_proc_entry("registers", local->proc);
+#endif /* PRISM2_NO_PROCFS_DEBUG */
+	hostap_remove_proc(local);
+
+	tx_cb = local->tx_callback;
+	while (tx_cb != NULL) {
+		tx_cb_prev = tx_cb;
+		tx_cb = tx_cb->next;
+		kfree(tx_cb_prev);
+	}
+
+	hostap_set_hostapd(local, 0, 0);
+	hostap_set_hostapd_sta(local, 0, 0);
+
+	for (i = 0; i < PRISM2_FRAG_CACHE_LEN; i++) {
+		if (local->frag_cache[i].skb != NULL)
+			dev_kfree_skb(local->frag_cache[i].skb);
+	}
+
+#ifdef PRISM2_DOWNLOAD_SUPPORT
+	prism2_download_free_data(local->dl_pri);
+	prism2_download_free_data(local->dl_sec);
+#endif /* PRISM2_DOWNLOAD_SUPPORT */
+
+	list_for_each_safe(ptr, n, &local->hostap_interfaces) {
+		iface = list_entry(ptr, struct hostap_interface, list);
+		if (iface->type == HOSTAP_INTERFACE_MASTER) {
+			/* special handling for this interface below */
+			continue;
+		}
+		hostap_remove_interface(iface->dev, 0, 1);
+	}
+
+	prism2_clear_set_tim_queue(local);
+
+	list_for_each_safe(ptr, n, &local->bss_list) {
+		struct hostap_bss_info *bss =
+			list_entry(ptr, struct hostap_bss_info, list);
+		kfree(bss);
+	}
+
+#if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
+	kfree(local->bus_m0_buf);
+#endif /* PRISM2_PCI and PRISM2_BUS_MASTER */
+	kfree(local->pda);
+	kfree(local->last_scan_results);
+	kfree(local->generic_elem);
+
+	unregister_netdev(local->dev);
+	free_netdev(local->dev);
+}
+
+
+#ifndef PRISM2_PLX
+static void prism2_suspend(struct net_device *dev)
+{
+	struct hostap_interface *iface;
+	struct local_info *local;
+	union iwreq_data wrqu;
+
+	iface = dev->priv;
+	local = iface->local;
+
+	/* Send disconnect event, e.g., to trigger reassociation after resume
+	 * if wpa_supplicant is used. */
+	memset(&wrqu, 0, sizeof(wrqu));
+	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+	wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
+
+	/* Disable hardware and firmware */
+	prism2_hw_shutdown(dev, 0);
+}
+#endif /* PRISM2_PLX */
+
+
+/* These might at some point be compiled separately and used as separate
+ * kernel modules or linked into one */
+#ifdef PRISM2_DOWNLOAD_SUPPORT
+#include "hostap_download.c"
+#endif /* PRISM2_DOWNLOAD_SUPPORT */
+
+#ifdef PRISM2_CALLBACK
+/* External hostap_callback.c file can be used to, e.g., blink activity led.
+ * This can use platform specific code and must define prism2_callback()
+ * function (if PRISM2_CALLBACK is not defined, these function calls are not
+ * used. */
+#include "hostap_callback.c"
+#endif /* PRISM2_CALLBACK */