staging: at76_usb wireless driver

Add the at76_usb wireless driver to the staging tree while the
other kernel driver (out of tree) gets rewritten to use the internal
wireless stack.

This patch comes directly from the Fedora kernel tree, with only the
directory placement of the files changed.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

7 files changed, 6192 insertions, 0 deletions

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 25338b7eac9..2a79decd7df 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -41,4 +41,6 @@ source "drivers/staging/wlan-ng/Kconfig"
 
 source "drivers/staging/echo/Kconfig"
 
+source "drivers/staging/at76_usb/Kconfig"
+
 endif # STAGING
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 7c466e94fd9..325bca4f71c 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -12,3 +12,4 @@ obj-$(CONFIG_USB_IP_COMMON)	+= usbip/
 obj-$(CONFIG_W35UND)		+= winbond/
 obj-$(CONFIG_PRISM2_USB)	+= wlan-ng/
 obj-$(CONFIG_ECHO)		+= echo/
+obj-$(CONFIG_USB_ATMEL)		+= at76_usb/
diff --git a/drivers/staging/at76_usb/Kconfig b/drivers/staging/at76_usb/Kconfig
new file mode 100644
index 00000000000..8606f962162
--- /dev/null
+++ b/drivers/staging/at76_usb/Kconfig
@@ -0,0 +1,8 @@
+config USB_ATMEL
+	tristate "Atmel at76c503/at76c505/at76c505a USB cards"
+	depends on WLAN_80211 && USB
+	default N
+	select FW_LOADER
+	---help---
+	  Enable support for USB Wireless devices using Atmel at76c503,
+	  at76c505 or at76c505a chips.
diff --git a/drivers/staging/at76_usb/Makefile b/drivers/staging/at76_usb/Makefile
new file mode 100644
index 00000000000..6a47e887230
--- /dev/null
+++ b/drivers/staging/at76_usb/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_USB_ATMEL)		+= at76_usb.o
diff --git a/drivers/staging/at76_usb/TODO b/drivers/staging/at76_usb/TODO
new file mode 100644
index 00000000000..6911ca71a41
--- /dev/null
+++ b/drivers/staging/at76_usb/TODO
@@ -0,0 +1,2 @@
+rewrite the driver to use the proper in-kernel wireless stack
+instead of using its own.
diff --git a/drivers/staging/at76_usb/at76_usb.c b/drivers/staging/at76_usb/at76_usb.c
new file mode 100644
index 00000000000..52df0c66518
--- /dev/null
+++ b/drivers/staging/at76_usb/at76_usb.c
@@ -0,0 +1,5559 @@
+/*
+ * at76c503/at76c505 USB driver
+ *
+ * Copyright (c) 2002 - 2003 Oliver Kurth
+ * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
+ * Copyright (c) 2004 Nick Jones
+ * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
+ * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This file is part of the Berlios driver for WLAN USB devices based on the
+ * Atmel AT76C503A/505/505A.
+ *
+ * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/usb.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <net/ieee80211_radiotap.h>
+#include <linux/firmware.h>
+#include <linux/leds.h>
+#include <net/ieee80211.h>
+
+#include "at76_usb.h"
+
+/* Version information */
+#define DRIVER_NAME "at76_usb"
+#define DRIVER_VERSION	"0.17"
+#define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
+
+/* at76_debug bits */
+#define DBG_PROGRESS		0x00000001	/* authentication/accociation */
+#define DBG_BSS_TABLE		0x00000002	/* show BSS table after scans */
+#define DBG_IOCTL		0x00000004	/* ioctl calls / settings */
+#define DBG_MAC_STATE		0x00000008	/* MAC state transitions */
+#define DBG_TX_DATA		0x00000010	/* tx header */
+#define DBG_TX_DATA_CONTENT	0x00000020	/* tx content */
+#define DBG_TX_MGMT		0x00000040	/* tx management */
+#define DBG_RX_DATA		0x00000080	/* rx data header */
+#define DBG_RX_DATA_CONTENT	0x00000100	/* rx data content */
+#define DBG_RX_MGMT		0x00000200	/* rx mgmt frame headers */
+#define DBG_RX_BEACON		0x00000400	/* rx beacon */
+#define DBG_RX_CTRL		0x00000800	/* rx control */
+#define DBG_RX_MGMT_CONTENT	0x00001000	/* rx mgmt content */
+#define DBG_RX_FRAGS		0x00002000	/* rx data fragment handling */
+#define DBG_DEVSTART		0x00004000	/* fw download, device start */
+#define DBG_URB			0x00008000	/* rx urb status, ... */
+#define DBG_RX_ATMEL_HDR	0x00010000	/* Atmel-specific Rx headers */
+#define DBG_PROC_ENTRY		0x00020000	/* procedure entries/exits */
+#define DBG_PM			0x00040000	/* power management settings */
+#define DBG_BSS_MATCH		0x00080000	/* BSS match failures */
+#define DBG_PARAMS		0x00100000	/* show configured parameters */
+#define DBG_WAIT_COMPLETE	0x00200000	/* command completion */
+#define DBG_RX_FRAGS_SKB	0x00400000	/* skb header of Rx fragments */
+#define DBG_BSS_TABLE_RM	0x00800000	/* purging bss table entries */
+#define DBG_MONITOR_MODE	0x01000000	/* monitor mode */
+#define DBG_MIB			0x02000000	/* dump all MIBs on startup */
+#define DBG_MGMT_TIMER		0x04000000	/* dump mgmt_timer ops */
+#define DBG_WE_EVENTS		0x08000000	/* dump wireless events */
+#define DBG_FW			0x10000000	/* firmware download */
+#define DBG_DFU			0x20000000	/* device firmware upgrade */
+
+#define DBG_DEFAULTS		0
+
+/* Use our own dbg macro */
+#define at76_dbg(bits, format, arg...) \
+	do { \
+		if (at76_debug & (bits)) \
+		printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , ## arg); \
+	} while (0)
+
+static int at76_debug = DBG_DEFAULTS;
+
+/* Protect against concurrent firmware loading and parsing */
+static struct mutex fw_mutex;
+
+static struct fwentry firmwares[] = {
+	[0] = {""},
+	[BOARD_503_ISL3861] = {"atmel_at76c503-i3861.bin"},
+	[BOARD_503_ISL3863] = {"atmel_at76c503-i3863.bin"},
+	[BOARD_503] = {"atmel_at76c503-rfmd.bin"},
+	[BOARD_503_ACC] = {"atmel_at76c503-rfmd-acc.bin"},
+	[BOARD_505] = {"atmel_at76c505-rfmd.bin"},
+	[BOARD_505_2958] = {"atmel_at76c505-rfmd2958.bin"},
+	[BOARD_505A] = {"atmel_at76c505a-rfmd2958.bin"},
+	[BOARD_505AMX] = {"atmel_at76c505amx-rfmd.bin"},
+};
+
+#define USB_DEVICE_DATA(__ops)	.driver_info = (kernel_ulong_t)(__ops)
+
+static struct usb_device_id dev_table[] = {
+	/*
+	 * at76c503-i3861
+	 */
+	/* Generic AT76C503/3861 device */
+	{USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Linksys WUSB11 v2.1/v2.6 */
+	{USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Netgear MA101 rev. A */
+	{USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Tekram U300C / Allnet ALL0193 */
+	{USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* HP HN210W J7801A */
+	{USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Sitecom/Z-Com/Zyxel M4Y-750 */
+	{USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Dynalink/Askey WLL013 (intersil) */
+	{USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
+	{USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* BenQ AWL300 */
+	{USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Addtron AWU-120, Compex WLU11 */
+	{USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Intel AP310 AnyPoint II USB */
+	{USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Dynalink L11U */
+	{USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* Arescom WL-210, FCC id 07J-GL2411USB */
+	{USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* I-O DATA WN-B11/USB */
+	{USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/* BT Voyager 1010 */
+	{USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861)},
+	/*
+	 * at76c503-i3863
+	 */
+	/* Generic AT76C503/3863 device */
+	{USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863)},
+	/* Samsung SWL-2100U */
+	{USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863)},
+	/*
+	 * at76c503-rfmd
+	 */
+	/* Generic AT76C503/RFMD device */
+	{USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503)},
+	/* Dynalink/Askey WLL013 (rfmd) */
+	{USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503)},
+	/* Linksys WUSB11 v2.6 */
+	{USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503)},
+	/* Network Everywhere NWU11B */
+	{USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503)},
+	/* Netgear MA101 rev. B */
+	{USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503)},
+	/* D-Link DWL-120 rev. E */
+	{USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503)},
+	/* Actiontec 802UAT1, HWU01150-01UK */
+	{USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503)},
+	/* AirVast W-Buddie WN210 */
+	{USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503)},
+	/* Dick Smith Electronics XH1153 802.11b USB adapter */
+	{USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503)},
+	/* CNet CNUSB611 */
+	{USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503)},
+	/* FiberLine FL-WL200U */
+	{USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503)},
+	/* BenQ AWL400 USB stick */
+	{USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503)},
+	/* 3Com 3CRSHEW696 */
+	{USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503)},
+	/* Siemens Santis ADSL WLAN USB adapter WLL 013 */
+	{USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503)},
+	/* Belkin F5D6050, version 2 */
+	{USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503)},
+	/* iBlitzz, BWU613 (not *B or *SB) */
+	{USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503)},
+	/* Gigabyte GN-WLBM101 */
+	{USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503)},
+	/* Planex GW-US11S */
+	{USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503)},
+	/* Internal WLAN adapter in h5[4,5]xx series iPAQs */
+	{USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503)},
+	/* Corega Wireless LAN USB-11 mini */
+	{USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503)},
+	/* Corega Wireless LAN USB-11 mini2 */
+	{USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503)},
+	/* Uniden PCW100 */
+	{USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503)},
+	/*
+	 * at76c503-rfmd-acc
+	 */
+	/* SMC2664W */
+	{USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC)},
+	/* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
+	{USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC)},
+	/*
+	 * at76c505-rfmd
+	 */
+	/* Generic AT76C505/RFMD */
+	{USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505)},
+	/*
+	 * at76c505-rfmd2958
+	 */
+	/* Generic AT76C505/RFMD, OvisLink WL-1130USB */
+	{USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958)},
+	/* Fiberline FL-WL240U */
+	{USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958)},
+	/* CNet CNUSB-611G */
+	{USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958)},
+	/* Linksys WUSB11 v2.8 */
+	{USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958)},
+	/* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
+	{USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958)},
+	/* Corega WLAN USB Stick 11 */
+	{USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958)},
+	/* Microstar MSI Box MS6978 */
+	{USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958)},
+	/*
+	 * at76c505a-rfmd2958
+	 */
+	/* Generic AT76C505A device */
+	{USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A)},
+	/* Generic AT76C505AS device */
+	{USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A)},
+	/* Siemens Gigaset USB WLAN Adapter 11 */
+	{USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A)},
+	/*
+	 * at76c505amx-rfmd
+	 */
+	/* Generic AT76C505AMX device */
+	{USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX)},
+	{}
+};
+
+MODULE_DEVICE_TABLE(usb, dev_table);
+
+/* Supported rates of this hardware, bit 7 marks basic rates */
+static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
+
+/* Frequency of each channel in MHz */
+static const long channel_frequency[] = {
+	2412, 2417, 2422, 2427, 2432, 2437, 2442,
+	2447, 2452, 2457, 2462, 2467, 2472, 2484
+};
+
+#define NUM_CHANNELS ARRAY_SIZE(channel_frequency)
+
+static const char *const preambles[] = { "long", "short", "auto" };
+
+static const char *const mac_states[] = {
+	[MAC_INIT] = "INIT",
+	[MAC_SCANNING] = "SCANNING",
+	[MAC_AUTH] = "AUTH",
+	[MAC_ASSOC] = "ASSOC",
+	[MAC_JOINING] = "JOINING",
+	[MAC_CONNECTED] = "CONNECTED",
+	[MAC_OWN_IBSS] = "OWN_IBSS"
+};
+
+/* Firmware download */
+/* DFU states */
+#define STATE_IDLE			0x00
+#define STATE_DETACH			0x01
+#define STATE_DFU_IDLE			0x02
+#define STATE_DFU_DOWNLOAD_SYNC		0x03
+#define STATE_DFU_DOWNLOAD_BUSY		0x04
+#define STATE_DFU_DOWNLOAD_IDLE		0x05
+#define STATE_DFU_MANIFEST_SYNC		0x06
+#define STATE_DFU_MANIFEST		0x07
+#define STATE_DFU_MANIFEST_WAIT_RESET	0x08
+#define STATE_DFU_UPLOAD_IDLE		0x09
+#define STATE_DFU_ERROR			0x0a
+
+/* DFU commands */
+#define DFU_DETACH			0
+#define DFU_DNLOAD			1
+#define DFU_UPLOAD			2
+#define DFU_GETSTATUS			3
+#define DFU_CLRSTATUS			4
+#define DFU_GETSTATE			5
+#define DFU_ABORT			6
+
+#define FW_BLOCK_SIZE 1024
+
+struct dfu_status {
+	unsigned char status;
+	unsigned char poll_timeout[3];
+	unsigned char state;
+	unsigned char string;
+} __attribute__((packed));
+
+static inline int at76_is_intersil(enum board_type board)
+{
+	return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
+}
+
+static inline int at76_is_503rfmd(enum board_type board)
+{
+	return (board == BOARD_503 || board == BOARD_503_ACC);
+}
+
+static inline int at76_is_505a(enum board_type board)
+{
+	return (board == BOARD_505A || board == BOARD_505AMX);
+}
+
+/* Load a block of the first (internal) part of the firmware */
+static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
+				  void *block, int size)
+{
+	return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
+			       USB_TYPE_CLASS | USB_DIR_OUT |
+			       USB_RECIP_INTERFACE, blockno, 0, block, size,
+			       USB_CTRL_GET_TIMEOUT);
+}
+
+static int at76_dfu_get_status(struct usb_device *udev,
+			       struct dfu_status *status)
+{
+	int ret;
+
+	ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
+			      USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
+			      0, 0, status, sizeof(struct dfu_status),
+			      USB_CTRL_GET_TIMEOUT);
+	return ret;
+}
+
+static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
+{
+	int ret;
+
+	ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
+			      USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
+			      0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
+	return ret;
+}
+
+/* Convert timeout from the DFU status to jiffies */
+static inline unsigned long at76_get_timeout(struct dfu_status *s)
+{
+	return msecs_to_jiffies((s->poll_timeout[2] << 16)
+				| (s->poll_timeout[1] << 8)
+				| (s->poll_timeout[0]));
+}
+
+/* Load internal firmware from the buffer.  If manifest_sync_timeout > 0, use
+ * its value in jiffies in the MANIFEST_SYNC state.  */
+static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
+				int manifest_sync_timeout)
+{
+	u8 *block;
+	struct dfu_status dfu_stat_buf;
+	int ret = 0;
+	int need_dfu_state = 1;
+	int is_done = 0;
+	u8 dfu_state = 0;
+	u32 dfu_timeout = 0;
+	int bsize = 0;
+	int blockno = 0;
+
+	at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
+		 manifest_sync_timeout);
+
+	if (!size) {
+		dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
+		return -EINVAL;
+	}
+
+	block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
+	if (!block)
+		return -ENOMEM;
+
+	do {
+		if (need_dfu_state) {
+			ret = at76_dfu_get_state(udev, &dfu_state);
+			if (ret < 0) {
+				dev_printk(KERN_ERR, &udev->dev,
+					   "cannot get DFU state: %d\n", ret);
+				goto exit;
+			}
+			need_dfu_state = 0;
+		}
+
+		switch (dfu_state) {
+		case STATE_DFU_DOWNLOAD_SYNC:
+			at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
+			ret = at76_dfu_get_status(udev, &dfu_stat_buf);
+			if (ret >= 0) {
+				dfu_state = dfu_stat_buf.state;
+				dfu_timeout = at76_get_timeout(&dfu_stat_buf);
+				need_dfu_state = 0;
+			} else
+				dev_printk(KERN_ERR, &udev->dev,
+					   "at76_dfu_get_status returned %d\n",
+					   ret);
+			break;
+
+		case STATE_DFU_DOWNLOAD_BUSY:
+			at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
+			need_dfu_state = 1;
+
+			at76_dbg(DBG_DFU, "DFU: Resetting device");
+			schedule_timeout_interruptible(dfu_timeout);
+			break;
+
+		case STATE_DFU_DOWNLOAD_IDLE:
+			at76_dbg(DBG_DFU, "DOWNLOAD...");
+			/* fall through */
+		case STATE_DFU_IDLE:
+			at76_dbg(DBG_DFU, "DFU IDLE");
+
+			bsize = min_t(int, size, FW_BLOCK_SIZE);
+			memcpy(block, buf, bsize);
+			at76_dbg(DBG_DFU, "int fw, size left = %5d, "
+				 "bsize = %4d, blockno = %2d", size, bsize,
+				 blockno);
+			ret =
+			    at76_load_int_fw_block(udev, blockno, block, bsize);
+			buf += bsize;
+			size -= bsize;
+			blockno++;
+
+			if (ret != bsize)
+				dev_printk(KERN_ERR, &udev->dev,
+					   "at76_load_int_fw_block "
+					   "returned %d\n", ret);
+			need_dfu_state = 1;
+			break;
+
+		case STATE_DFU_MANIFEST_SYNC:
+			at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
+
+			ret = at76_dfu_get_status(udev, &dfu_stat_buf);
+			if (ret < 0)
+				break;
+
+			dfu_state = dfu_stat_buf.state;
+			dfu_timeout = at76_get_timeout(&dfu_stat_buf);
+			need_dfu_state = 0;
+
+			/* override the timeout from the status response,
+			   needed for AT76C505A */
+			if (manifest_sync_timeout > 0)
+				dfu_timeout = manifest_sync_timeout;
+
+			at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
+			schedule_timeout_interruptible(dfu_timeout);
+			break;
+
+		case STATE_DFU_MANIFEST:
+			at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
+			is_done = 1;
+			break;
+
+		case STATE_DFU_MANIFEST_WAIT_RESET:
+			at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
+			is_done = 1;
+			break;
+
+		case STATE_DFU_UPLOAD_IDLE:
+			at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
+			break;
+
+		case STATE_DFU_ERROR:
+			at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
+			ret = -EPIPE;
+			break;
+
+		default:
+			at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
+			ret = -EINVAL;
+			break;
+		}
+	} while (!is_done && (ret >= 0));
+
+exit:
+	kfree(block);
+	if (ret >= 0)
+		ret = 0;
+
+	return ret;
+}
+
+/* Report that the scan results are ready */
+static inline void at76_iwevent_scan_complete(struct net_device *netdev)
+{
+	union iwreq_data wrqu;
+	wrqu.data.length = 0;
+	wrqu.data.flags = 0;
+	wireless_send_event(netdev, SIOCGIWSCAN, &wrqu, NULL);
+	at76_dbg(DBG_WE_EVENTS, "%s: SIOCGIWSCAN sent", netdev->name);
+}
+
+static inline void at76_iwevent_bss_connect(struct net_device *netdev,
+					    u8 *bssid)
+{
+	union iwreq_data wrqu;
+	wrqu.data.length = 0;
+	wrqu.data.flags = 0;
+	memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
+	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+	wireless_send_event(netdev, SIOCGIWAP, &wrqu, NULL);
+	at76_dbg(DBG_WE_EVENTS, "%s: %s: SIOCGIWAP sent", netdev->name,
+		 __func__);
+}
+
+static inline void at76_iwevent_bss_disconnect(struct net_device *netdev)
+{
+	union iwreq_data wrqu;
+	wrqu.data.length = 0;
+	wrqu.data.flags = 0;
+	memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
+	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+	wireless_send_event(netdev, SIOCGIWAP, &wrqu, NULL);
+	at76_dbg(DBG_WE_EVENTS, "%s: %s: SIOCGIWAP sent", netdev->name,
+		 __func__);
+}
+
+#define HEX2STR_BUFFERS 4
+#define HEX2STR_MAX_LEN 64
+#define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
+
+/* Convert binary data into hex string */
+static char *hex2str(void *buf, int len)
+{
+	static atomic_t a = ATOMIC_INIT(0);
+	static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
+	char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
+	char *obuf = ret;
+	u8 *ibuf = buf;
+
+	if (len > HEX2STR_MAX_LEN)
+		len = HEX2STR_MAX_LEN;
+
+	if (len <= 0) {
+		ret[0] = '\0';
+		return ret;
+	}
+
+	while (len--) {
+		*obuf++ = BIN2HEX(*ibuf >> 4);
+		*obuf++ = BIN2HEX(*ibuf & 0xf);
+		*obuf++ = '-';
+		ibuf++;
+	}
+	*(--obuf) = '\0';
+
+	return ret;
+}
+
+#define MAC2STR_BUFFERS 4
+
+static inline char *mac2str(u8 *mac)
+{
+	static atomic_t a = ATOMIC_INIT(0);
+	static char bufs[MAC2STR_BUFFERS][6 * 3];
+	char *str;
+
+	str = bufs[atomic_inc_return(&a) & (MAC2STR_BUFFERS - 1)];
+	sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
+		mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+	return str;
+}
+
+/* LED trigger */
+static int tx_activity;
+static void at76_ledtrig_tx_timerfunc(unsigned long data);
+static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
+DEFINE_LED_TRIGGER(ledtrig_tx);
+
+static void at76_ledtrig_tx_timerfunc(unsigned long data)
+{
+	static int tx_lastactivity;
+
+	if (tx_lastactivity != tx_activity) {
+		tx_lastactivity = tx_activity;
+		led_trigger_event(ledtrig_tx, LED_FULL);
+		mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
+	} else
+		led_trigger_event(ledtrig_tx, LED_OFF);
+}
+
+static void at76_ledtrig_tx_activity(void)
+{
+	tx_activity++;
+	if (!timer_pending(&ledtrig_tx_timer))
+		mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
+}
+
+/* Check if the given ssid is hidden */
+static inline int at76_is_hidden_ssid(u8 *ssid, int length)
+{
+	static const u8 zeros[32];
+
+	if (length == 0)
+		return 1;
+
+	if (length == 1 && ssid[0] == ' ')
+		return 1;
+
+	return (memcmp(ssid, zeros, length) == 0);
+}
+
+static inline void at76_free_bss_list(struct at76_priv *priv)
+{
+	struct list_head *next, *ptr;
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->bss_list_spinlock, flags);
+
+	priv->curr_bss = NULL;
+
+	list_for_each_safe(ptr, next, &priv->bss_list) {
+		list_del(ptr);
+		kfree(list_entry(ptr, struct bss_info, list));
+	}
+
+	spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
+}
+
+static int at76_remap(struct usb_device *udev)
+{
+	int ret;
+	ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
+			      USB_TYPE_VENDOR | USB_DIR_OUT |
+			      USB_RECIP_INTERFACE, 0, 0, NULL, 0,
+			      USB_CTRL_GET_TIMEOUT);
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+static int at76_get_op_mode(struct usb_device *udev)
+{
+	int ret;
+	u8 op_mode;
+
+	ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
+			      USB_TYPE_VENDOR | USB_DIR_IN |
+			      USB_RECIP_INTERFACE, 0x01, 0, &op_mode, 1,
+			      USB_CTRL_GET_TIMEOUT);
+	if (ret < 0)
+		return ret;
+	else if (ret < 1)
+		return -EIO;
+	else
+		return op_mode;
+}
+
+/* Load a block of the second ("external") part of the firmware */
+static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
+					 void *block, int size)
+{
+	return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
+			       USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
+			       0x0802, blockno, block, size,
+			       USB_CTRL_GET_TIMEOUT);
+}
+
+static inline int at76_get_hw_cfg(struct usb_device *udev,
+				  union at76_hwcfg *buf, int buf_size)
+{
+	return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
+			       USB_TYPE_VENDOR | USB_DIR_IN |
+			       USB_RECIP_INTERFACE, 0x0a02, 0,
+			       buf, buf_size, USB_CTRL_GET_TIMEOUT);
+}
+
+/* Intersil boards use a different "value" for GetHWConfig requests */
+static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
+					   union at76_hwcfg *buf, int buf_size)
+{
+	return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
+			       USB_TYPE_VENDOR | USB_DIR_IN |
+			       USB_RECIP_INTERFACE, 0x0902, 0,
+			       buf, buf_size, USB_CTRL_GET_TIMEOUT);
+}
+
+/* Get the hardware configuration for the adapter and put it to the appropriate
+ * fields of 'priv' (the GetHWConfig request and interpretation of the result
+ * depends on the board type) */
+static int at76_get_hw_config(struct at76_priv *priv)
+{
+	int ret;
+	union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
+
+	if (!hwcfg)
+		return -ENOMEM;
+
+	if (at76_is_intersil(priv->board_type)) {
+		ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
+					       sizeof(hwcfg->i));
+		if (ret < 0)
+			goto exit;
+		memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
+		priv->regulatory_domain = hwcfg->i.regulatory_domain;
+	} else if (at76_is_503rfmd(priv->board_type)) {
+		ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
+		if (ret < 0)
+			goto exit;
+		memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
+		priv->regulatory_domain = hwcfg->r3.regulatory_domain;
+	} else {
+		ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
+		if (ret < 0)
+			goto exit;
+		memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
+		priv->regulatory_domain = hwcfg->r5.regulatory_domain;
+	}
+
+exit:
+	kfree(hwcfg);
+	if (ret < 0)
+		printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
+		       priv->netdev->name, ret);
+
+	return ret;
+}
+
+static struct reg_domain const *at76_get_reg_domain(u16 code)
+{
+	int i;
+	static struct reg_domain const fd_tab[] = {
+		{0x10, "FCC (USA)", 0x7ff},	/* ch 1-11 */
+		{0x20, "IC (Canada)", 0x7ff},	/* ch 1-11 */
+		{0x30, "ETSI (most of Europe)", 0x1fff},	/* ch 1-13 */
+		{0x31, "Spain", 0x600},	/* ch 10-11 */
+		{0x32, "France", 0x1e00},	/* ch 10-13 */
+		{0x40, "MKK (Japan)", 0x2000},	/* ch 14 */
+		{0x41, "MKK1 (Japan)", 0x3fff},	/* ch 1-14 */
+		{0x50, "Israel", 0x3fc},	/* ch 3-9 */
+		{0x00, "<unknown>", 0xffffffff}	/* ch 1-32 */
+	};
+
+	/* Last entry is fallback for unknown domain code */
+	for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
+		if (code == fd_tab[i].code)
+			break;
+
+	return &fd_tab[i];
+}
+
+static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
+			       int buf_size)
+{
+	int ret;
+
+	ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
+			      USB_TYPE_VENDOR | USB_DIR_IN |
+			      USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
+			      USB_CTRL_GET_TIMEOUT);
+	if (ret >= 0 && ret != buf_size)
+		return -EIO;
+	return ret;
+}
+
+/* Return positive number for status, negative for an error */
+static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
+{
+	u8 stat_buf[40];
+	int ret;
+
+	ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
+			      USB_TYPE_VENDOR | USB_DIR_IN |
+			      USB_RECIP_INTERFACE, cmd, 0, stat_buf,
+			      sizeof(stat_buf), USB_CTRL_GET_TIMEOUT);
+	if (ret < 0)
+		return ret;
+
+	return stat_buf[5];
+}
+
+static int at76_set_card_command(struct usb_device *udev, int cmd, void *buf,
+				 int buf_size)
+{
+	int ret;
+	struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
+					       buf_size, GFP_KERNEL);
+
+	if (!cmd_buf)
+		return -ENOMEM;
+
+	cmd_buf->cmd = cmd;
+	cmd_buf->reserved = 0;
+	cmd_buf->size = cpu_to_le16(buf_size);
+	memcpy(cmd_buf->data, buf, buf_size);
+
+	ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
+			      USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
+			      0, 0, cmd_buf,
+			      sizeof(struct at76_command) + buf_size,
+			      USB_CTRL_GET_TIMEOUT);
+	kfree(cmd_buf);
+	return ret;
+}
+
+#define MAKE_CMD_STATUS_CASE(c)	case (c): return #c
+static const char *at76_get_cmd_status_string(u8 cmd_status)
+{
+	switch (cmd_status) {
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
+		MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
+	}
+
+	return "UNKNOWN";
+}
+
+/* Wait until the command is completed */
+static int at76_wait_completion(struct at76_priv *priv, int cmd)
+{
+	int status = 0;
+	unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
+
+	do {
+		status = at76_get_cmd_status(priv->udev, cmd);
+		if (status < 0) {
+			printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
+			       priv->netdev->name, status);
+			break;
+		}
+
+		at76_dbg(DBG_WAIT_COMPLETE,
+			 "%s: Waiting on cmd %d, status = %d (%s)",
+			 priv->netdev->name, cmd, status,
+			 at76_get_cmd_status_string(status));
+
+		if (status != CMD_STATUS_IN_PROGRESS
+		    && status != CMD_STATUS_IDLE)
+			break;
+
+		schedule_timeout_interruptible(HZ / 10);	/* 100 ms */
+		if (time_after(jiffies, timeout)) {
+			printk(KERN_ERR
+			       "%s: completion timeout for command %d\n",
+			       priv->netdev->name, cmd);
+			status = -ETIMEDOUT;
+			break;
+		}
+	} while (1);
+
+	return status;
+}
+
+static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
+{
+	int ret;
+
+	ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
+				    offsetof(struct set_mib_buffer,
+					     data) + buf->size);
+	if (ret < 0)
+		return ret;
+
+	ret = at76_wait_completion(priv, CMD_SET_MIB);
+	if (ret != CMD_STATUS_COMPLETE) {
+		printk(KERN_INFO
+		       "%s: set_mib: at76_wait_completion failed "
+		       "with %d\n", priv->netdev->name, ret);
+		ret = -EIO;
+	}
+
+	return ret;
+}
+
+/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
+static int at76_set_radio(struct at76_priv *priv, int enable)
+{
+	int ret;
+	int cmd;
+
+	if (priv->radio_on == enable)
+		return 0;
+
+	cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
+
+	ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
+	if (ret < 0)
+		printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
+		       priv->netdev->name, cmd, ret);
+	else
+		ret = 1;
+
+	priv->radio_on = enable;
+	return ret;
+}
+
+/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
+static int at76_set_pm_mode(struct at76_priv *priv)
+{
+	int ret = 0;
+
+	priv->mib_buf.type = MIB_MAC_MGMT;
+	priv->mib_buf.size = 1;
+	priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
+	priv->mib_buf.data.byte = priv->pm_mode;
+
+	ret = at76_set_mib(priv, &priv->mib_buf);
+	if (ret < 0)
+		printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
+		       priv->netdev->name, ret);
+
+	return ret;
+}
+
+/* Set the association id for power save mode */
+static int at76_set_associd(struct at76_priv *priv, u16 id)
+{
+	int ret = 0;
+
+	priv->mib_buf.type = MIB_MAC_MGMT;
+	priv->mib_buf.size = 2;
+	priv->mib_buf.index = offsetof(struct mib_mac_mgmt, station_id);
+	priv->mib_buf.data.word = cpu_to_le16(id);
+
+	ret = at76_set_mib(priv, &priv->mib_buf);
+	if (ret < 0)
+		printk(KERN_ERR "%s: set_mib (associd) failed: %d\n",
+		       priv->netdev->name, ret);
+
+	return ret;
+}
+
+/* Set the listen interval for power save mode */
+static int at76_set_listen_interval(struct at76_priv *priv, u16 interval)
+{
+	int ret = 0;
+
+	priv->mib_buf.type = MIB_MAC;
+	priv->mib_buf.size = 2;
+	priv->mib_buf.index = offsetof(struct mib_mac, listen_interval);
+	priv->mib_buf.data.word = cpu_to_le16(interval);
+
+	ret = at76_set_mib(priv, &priv->mib_buf);
+	if (ret < 0)
+		printk(KERN_ERR
+		       "%s: set_mib (listen_interval) failed: %d\n",
+		       priv->netdev->name, ret);
+
+	return ret;
+}
+
+static int at76_set_preamble(struct at76_priv *priv, u8 type)
+{
+	int ret = 0;
+
+	priv->mib_buf.type = MIB_LOCAL;
+	priv->mib_buf.size = 1;
+	priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
+	priv->mib_buf.data.byte = type;
+
+	ret = at76_set_mib(priv, &priv->mib_buf);
+	if (ret < 0)
+		printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
+		       priv->netdev->name, ret);
+
+	return ret;
+}
+
+static int at76_set_frag(struct at76_priv *priv, u16 size)
+{
+	int ret = 0;
+
+	priv->mib_buf.type = MIB_MAC;
+	priv->mib_buf.size = 2;
+	priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
+	priv->mib_buf.data.word = cpu_to_le16(size);
+
+	ret = at76_set_mib(priv, &priv->mib_buf);
+	if (ret < 0)
+		printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
+		       priv->netdev->name, ret);
+
+	return ret;
+}
+
+static int at76_set_rts(struct at76_priv *priv, u16 size)
+{
+	int ret = 0;