Add a new USB wireless driver, urtw(4) for supporting Realtek's 8187L

chipset.

5 files changed, 3742 insertions, 0 deletions

diff --git a/sys/dev/usb/if_urtw.c b/sys/dev/usb/if_urtw.c
new file mode 100644
index 0000000..efbfbca
--- /dev/null
+++ b/sys/dev/usb/if_urtw.c
@@ -0,0 +1,3324 @@
+/*-
+ * Copyright (c) 2008 Weongyo Jeong <weongyo@FreeBSD.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+#include <sys/param.h>
+#include <sys/sockio.h>
+#include <sys/sysctl.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/mbuf.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/endian.h>
+#include <sys/kdb.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <sys/rman.h>
+
+#include <net/bpf.h>
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <net/ethernet.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+#include <net/if_types.h>
+
+#ifdef INET
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/in_var.h>
+#include <netinet/if_ether.h>
+#include <netinet/ip.h>
+#endif
+
+#include <net80211/ieee80211_var.h>
+#include <net80211/ieee80211_regdomain.h>
+#include <net80211/ieee80211_radiotap.h>
+
+#include <dev/usb/usb.h>
+#include <dev/usb/usbdi.h>
+#include <dev/usb/usbdi_util.h>
+#include "usbdevs.h"
+
+#include <dev/usb/if_urtwreg.h>
+#include <dev/usb/if_urtwvar.h>
+
+SYSCTL_NODE(_hw_usb, OID_AUTO, urtw, CTLFLAG_RW, 0, "USB Realtek 8187L");
+#ifdef URTW_DEBUG
+int urtw_debug = 0;
+SYSCTL_INT(_hw_usb_urtw, OID_AUTO, debug, CTLFLAG_RW, &urtw_debug, 0,
+    "control debugging printfs");
+TUNABLE_INT("hw.usb.urtw.debug", &urtw_debug);
+enum {
+	URTW_DEBUG_XMIT		= 0x00000001,	/* basic xmit operation */
+	URTW_DEBUG_RECV		= 0x00000002,	/* basic recv operation */
+	URTW_DEBUG_RESET	= 0x00000004,	/* reset processing */
+	URTW_DEBUG_TX_PROC	= 0x00000008,	/* tx ISR proc */
+	URTW_DEBUG_RX_PROC	= 0x00000010,	/* rx ISR proc */
+	URTW_DEBUG_STATE	= 0x00000020,	/* 802.11 state transitions */
+	URTW_DEBUG_STAT		= 0x00000040,	/* statistic */
+	URTW_DEBUG_ANY		= 0xffffffff
+};
+#define	DPRINTF(sc, m, fmt, ...) do {				\
+	if (sc->sc_debug & (m))					\
+		printf(fmt, __VA_ARGS__);			\
+} while (0)
+#else
+#define	DPRINTF(sc, m, fmt, ...) do {				\
+	(void) sc;						\
+} while (0)
+#endif
+int urtw_preamble_mode = URTW_PREAMBLE_MODE_LONG;
+SYSCTL_INT(_hw_usb_urtw, OID_AUTO, preamble_mode, CTLFLAG_RW,
+    &urtw_preamble_mode, 0, "set the preable mode (long or short)");
+TUNABLE_INT("hw.usb.urtw.preamble_mode", &urtw_preamble_mode);
+
+/* recognized device vendors/products */
+static const struct usb_devno urtw_devs[] = {
+#define	URTW_DEV(v,p) { USB_VENDOR_##v, USB_PRODUCT_##v##_##p }
+	URTW_DEV(REALTEK, RTL8187),
+	URTW_DEV(NETGEAR, WG111V2)
+#undef URTW_DEV
+};
+
+#define urtw_read8_m(sc, val, data)	do {			\
+	error = urtw_read8_c(sc, val, data);			\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+#define urtw_write8_m(sc, val, data)	do {			\
+	error = urtw_write8_c(sc, val, data);			\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+#define urtw_read16_m(sc, val, data)	do {			\
+	error = urtw_read16_c(sc, val, data);			\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+#define urtw_write16_m(sc, val, data)	do {			\
+	error = urtw_write16_c(sc, val, data);			\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+#define urtw_read32_m(sc, val, data)	do {			\
+	error = urtw_read32_c(sc, val, data);			\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+#define urtw_write32_m(sc, val, data)	do {			\
+	error = urtw_write32_c(sc, val, data);			\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+#define urtw_8187_write_phy_ofdm(sc, val, data)	do {		\
+	error = urtw_8187_write_phy_ofdm_c(sc, val, data);	\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+#define urtw_8187_write_phy_cck(sc, val, data)	do {		\
+	error = urtw_8187_write_phy_cck_c(sc, val, data);	\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+#define urtw_8225_write(sc, val, data)	do {			\
+	error = urtw_8225_write_c(sc, val, data);		\
+	if (error != 0)						\
+		goto fail;					\
+} while (0)
+
+struct urtw_pair {
+	uint32_t	reg;
+	uint32_t	val;
+};
+
+static uint8_t urtw_8225_agc[] = {
+	0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9d, 0x9c, 0x9b,
+	0x9a, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91, 0x90,
+	0x8f, 0x8e, 0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88, 0x87, 0x86, 0x85,
+	0x84, 0x83, 0x82, 0x81, 0x80, 0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a,
+	0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2f,
+	0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24,
+	0x23, 0x22, 0x21, 0x20, 0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19,
+	0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x0e,
+	0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03,
+	0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01
+};
+
+static uint32_t urtw_8225_channel[] = {
+	0x0000,		/* dummy channel 0  */
+	0x085c,		/* 1  */
+	0x08dc,		/* 2  */
+	0x095c,		/* 3  */
+	0x09dc,		/* 4  */
+	0x0a5c,		/* 5  */
+	0x0adc,		/* 6  */
+	0x0b5c,		/* 7  */
+	0x0bdc,		/* 8  */
+	0x0c5c,		/* 9  */
+	0x0cdc,		/* 10  */
+	0x0d5c,		/* 11  */
+	0x0ddc,		/* 12  */
+	0x0e5c,		/* 13  */
+	0x0f72,		/* 14  */
+};
+
+static uint8_t urtw_8225_gain[] = {
+	0x23, 0x88, 0x7c, 0xa5,		/* -82dbm  */
+	0x23, 0x88, 0x7c, 0xb5,		/* -82dbm  */
+	0x23, 0x88, 0x7c, 0xc5,		/* -82dbm  */
+	0x33, 0x80, 0x79, 0xc5,		/* -78dbm  */
+	0x43, 0x78, 0x76, 0xc5,		/* -74dbm  */
+	0x53, 0x60, 0x73, 0xc5,		/* -70dbm  */
+	0x63, 0x58, 0x70, 0xc5,		/* -66dbm  */
+};
+
+static struct urtw_pair urtw_8225_rf_part1[] = {
+	{ 0x00, 0x0067 }, { 0x01, 0x0fe0 }, { 0x02, 0x044d }, { 0x03, 0x0441 },
+	{ 0x04, 0x0486 }, { 0x05, 0x0bc0 }, { 0x06, 0x0ae6 }, { 0x07, 0x082a },
+	{ 0x08, 0x001f }, { 0x09, 0x0334 }, { 0x0a, 0x0fd4 }, { 0x0b, 0x0391 },
+	{ 0x0c, 0x0050 }, { 0x0d, 0x06db }, { 0x0e, 0x0029 }, { 0x0f, 0x0914 },
+};
+
+static struct urtw_pair urtw_8225_rf_part2[] = {
+	{ 0x00, 0x01 }, { 0x01, 0x02 }, { 0x02, 0x42 }, { 0x03, 0x00 },
+	{ 0x04, 0x00 }, { 0x05, 0x00 }, { 0x06, 0x40 }, { 0x07, 0x00 },
+	{ 0x08, 0x40 }, { 0x09, 0xfe }, { 0x0a, 0x09 }, { 0x0b, 0x80 },
+	{ 0x0c, 0x01 }, { 0x0e, 0xd3 }, { 0x0f, 0x38 }, { 0x10, 0x84 },
+	{ 0x11, 0x06 }, { 0x12, 0x20 }, { 0x13, 0x20 }, { 0x14, 0x00 },
+	{ 0x15, 0x40 }, { 0x16, 0x00 }, { 0x17, 0x40 }, { 0x18, 0xef },
+	{ 0x19, 0x19 }, { 0x1a, 0x20 }, { 0x1b, 0x76 }, { 0x1c, 0x04 },
+	{ 0x1e, 0x95 }, { 0x1f, 0x75 }, { 0x20, 0x1f }, { 0x21, 0x27 },
+	{ 0x22, 0x16 }, { 0x24, 0x46 }, { 0x25, 0x20 }, { 0x26, 0x90 },
+	{ 0x27, 0x88 }
+};
+
+static struct urtw_pair urtw_8225_rf_part3[] = {
+	{ 0x00, 0x98 }, { 0x03, 0x20 }, { 0x04, 0x7e }, { 0x05, 0x12 },
+	{ 0x06, 0xfc }, { 0x07, 0x78 }, { 0x08, 0x2e }, { 0x10, 0x9b },
+	{ 0x11, 0x88 }, { 0x12, 0x47 }, { 0x13, 0xd0 }, { 0x19, 0x00 },
+	{ 0x1a, 0xa0 }, { 0x1b, 0x08 }, { 0x40, 0x86 }, { 0x41, 0x8d },
+	{ 0x42, 0x15 }, { 0x43, 0x18 }, { 0x44, 0x1f }, { 0x45, 0x1e },
+	{ 0x46, 0x1a }, { 0x47, 0x15 }, { 0x48, 0x10 }, { 0x49, 0x0a },
+	{ 0x4a, 0x05 }, { 0x4b, 0x02 }, { 0x4c, 0x05 }
+};
+
+static uint16_t urtw_8225_rxgain[] = {
+	0x0400, 0x0401, 0x0402, 0x0403, 0x0404, 0x0405, 0x0408, 0x0409,
+	0x040a, 0x040b, 0x0502, 0x0503, 0x0504, 0x0505, 0x0540, 0x0541,
+	0x0542, 0x0543, 0x0544, 0x0545, 0x0580, 0x0581, 0x0582, 0x0583,
+	0x0584, 0x0585, 0x0588, 0x0589, 0x058a, 0x058b, 0x0643, 0x0644,
+	0x0645, 0x0680, 0x0681, 0x0682, 0x0683, 0x0684, 0x0685, 0x0688,
+	0x0689, 0x068a, 0x068b, 0x068c, 0x0742, 0x0743, 0x0744, 0x0745,
+	0x0780, 0x0781, 0x0782, 0x0783, 0x0784, 0x0785, 0x0788, 0x0789,
+	0x078a, 0x078b, 0x078c, 0x078d, 0x0790, 0x0791, 0x0792, 0x0793,
+	0x0794, 0x0795, 0x0798, 0x0799, 0x079a, 0x079b, 0x079c, 0x079d,
+	0x07a0, 0x07a1, 0x07a2, 0x07a3, 0x07a4, 0x07a5, 0x07a8, 0x07a9,
+	0x07aa, 0x07ab, 0x07ac, 0x07ad, 0x07b0, 0x07b1, 0x07b2, 0x07b3,
+	0x07b4, 0x07b5, 0x07b8, 0x07b9, 0x07ba, 0x07bb, 0x07bb
+};
+
+static uint8_t urtw_8225_threshold[] = {
+	0x8d, 0x8d, 0x8d, 0x8d, 0x9d, 0xad, 0xbd,
+};
+
+static uint8_t urtw_8225_tx_gain_cck_ofdm[] = {
+	0x02, 0x06, 0x0e, 0x1e, 0x3e, 0x7e
+};
+
+static uint8_t urtw_8225_txpwr_cck[] = {
+	0x18, 0x17, 0x15, 0x11, 0x0c, 0x08, 0x04, 0x02,
+	0x1b, 0x1a, 0x17, 0x13, 0x0e, 0x09, 0x04, 0x02,
+	0x1f, 0x1e, 0x1a, 0x15, 0x10, 0x0a, 0x05, 0x02,
+	0x22, 0x21, 0x1d, 0x18, 0x11, 0x0b, 0x06, 0x02,
+	0x26, 0x25, 0x21, 0x1b, 0x14, 0x0d, 0x06, 0x03,
+	0x2b, 0x2a, 0x25, 0x1e, 0x16, 0x0e, 0x07, 0x03
+};
+
+static uint8_t urtw_8225_txpwr_cck_ch14[] = {
+	0x18, 0x17, 0x15, 0x0c, 0x00, 0x00, 0x00, 0x00,
+	0x1b, 0x1a, 0x17, 0x0e, 0x00, 0x00, 0x00, 0x00,
+	0x1f, 0x1e, 0x1a, 0x0f, 0x00, 0x00, 0x00, 0x00,
+	0x22, 0x21, 0x1d, 0x11, 0x00, 0x00, 0x00, 0x00,
+	0x26, 0x25, 0x21, 0x13, 0x00, 0x00, 0x00, 0x00,
+	0x2b, 0x2a, 0x25, 0x15, 0x00, 0x00, 0x00, 0x00
+};
+
+static uint8_t urtw_8225_txpwr_ofdm[]={
+	0x80, 0x90, 0xa2, 0xb5, 0xcb, 0xe4
+};
+
+static uint8_t urtw_8225v2_gain_bg[]={
+	0x23, 0x15, 0xa5,		/* -82-1dbm  */
+	0x23, 0x15, 0xb5,		/* -82-2dbm  */
+	0x23, 0x15, 0xc5,		/* -82-3dbm  */
+	0x33, 0x15, 0xc5,		/* -78dbm  */
+	0x43, 0x15, 0xc5,		/* -74dbm  */
+	0x53, 0x15, 0xc5,		/* -70dbm  */
+	0x63, 0x15, 0xc5,		/* -66dbm  */
+};
+
+static struct urtw_pair urtw_8225v2_rf_part1[] = {
+	{ 0x00, 0x02bf }, { 0x01, 0x0ee0 }, { 0x02, 0x044d }, { 0x03, 0x0441 },
+	{ 0x04, 0x08c3 }, { 0x05, 0x0c72 }, { 0x06, 0x00e6 }, { 0x07, 0x082a },
+	{ 0x08, 0x003f }, { 0x09, 0x0335 }, { 0x0a, 0x09d4 }, { 0x0b, 0x07bb },
+	{ 0x0c, 0x0850 }, { 0x0d, 0x0cdf }, { 0x0e, 0x002b }, { 0x0f, 0x0114 }
+};
+
+static struct urtw_pair urtw_8225v2_rf_part2[] = {
+	{ 0x00, 0x01 }, { 0x01, 0x02 }, { 0x02, 0x42 }, { 0x03, 0x00 },
+	{ 0x04, 0x00 },	{ 0x05, 0x00 }, { 0x06, 0x40 }, { 0x07, 0x00 },
+	{ 0x08, 0x40 }, { 0x09, 0xfe }, { 0x0a, 0x08 }, { 0x0b, 0x80 },
+	{ 0x0c, 0x01 }, { 0x0d, 0x43 }, { 0x0e, 0xd3 }, { 0x0f, 0x38 },
+	{ 0x10, 0x84 }, { 0x11, 0x07 }, { 0x12, 0x20 }, { 0x13, 0x20 },
+	{ 0x14, 0x00 }, { 0x15, 0x40 }, { 0x16, 0x00 }, { 0x17, 0x40 },
+	{ 0x18, 0xef }, { 0x19, 0x19 }, { 0x1a, 0x20 }, { 0x1b, 0x15 },
+	{ 0x1c, 0x04 }, { 0x1d, 0xc5 }, { 0x1e, 0x95 }, { 0x1f, 0x75 },
+	{ 0x20, 0x1f }, { 0x21, 0x17 }, { 0x22, 0x16 }, { 0x23, 0x80 },
+	{ 0x24, 0x46 }, { 0x25, 0x00 }, { 0x26, 0x90 }, { 0x27, 0x88 }
+};
+
+static struct urtw_pair urtw_8225v2_rf_part3[] = {
+	{ 0x00, 0x98 }, { 0x03, 0x20 }, { 0x04, 0x7e }, { 0x05, 0x12 },
+	{ 0x06, 0xfc }, { 0x07, 0x78 }, { 0x08, 0x2e }, { 0x09, 0x11 },
+	{ 0x0a, 0x17 }, { 0x0b, 0x11 }, { 0x10, 0x9b }, { 0x11, 0x88 },
+	{ 0x12, 0x47 }, { 0x13, 0xd0 }, { 0x19, 0x00 }, { 0x1a, 0xa0 },
+	{ 0x1b, 0x08 }, { 0x1d, 0x00 }, { 0x40, 0x86 }, { 0x41, 0x9d },
+	{ 0x42, 0x15 }, { 0x43, 0x18 }, { 0x44, 0x36 }, { 0x45, 0x35 },
+	{ 0x46, 0x2e }, { 0x47, 0x25 }, { 0x48, 0x1c }, { 0x49, 0x12 },
+	{ 0x4a, 0x09 }, { 0x4b, 0x04 }, { 0x4c, 0x05 }
+};
+
+static uint16_t urtw_8225v2_rxgain[] = {
+	0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0008, 0x0009,
+	0x000a, 0x000b, 0x0102, 0x0103, 0x0104, 0x0105, 0x0140, 0x0141,
+	0x0142, 0x0143, 0x0144, 0x0145, 0x0180, 0x0181, 0x0182, 0x0183,
+	0x0184, 0x0185, 0x0188, 0x0189, 0x018a, 0x018b, 0x0243, 0x0244,
+	0x0245, 0x0280, 0x0281, 0x0282, 0x0283, 0x0284, 0x0285, 0x0288,
+	0x0289, 0x028a, 0x028b, 0x028c, 0x0342, 0x0343, 0x0344, 0x0345,
+	0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0388, 0x0389,
+	0x038a, 0x038b, 0x038c, 0x038d, 0x0390, 0x0391, 0x0392, 0x0393,
+	0x0394, 0x0395, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d,
+	0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a8, 0x03a9,
+	0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03b0, 0x03b1, 0x03b2, 0x03b3,
+	0x03b4, 0x03b5, 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bb
+};
+
+static uint8_t urtw_8225v2_tx_gain_cck_ofdm[] = {
+	0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
+	0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
+	0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
+	0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
+	0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
+};
+
+static uint8_t urtw_8225v2_txpwr_cck[] = {
+	0x36, 0x35, 0x2e, 0x25, 0x1c, 0x12, 0x09, 0x04
+};
+
+static uint8_t urtw_8225v2_txpwr_cck_ch14[] = {
+	0x36, 0x35, 0x2e, 0x1b, 0x00, 0x00, 0x00, 0x00
+};
+
+static struct urtw_pair urtw_ratetable[] = {
+	{  2,  0 }, {   4,  1 }, { 11, 2 }, { 12, 4 }, { 18, 5 },
+	{ 22,  3 }, {  24,  6 }, { 36, 7 }, { 48, 8 }, { 72, 9 },
+	{ 96, 10 }, { 108, 11 }
+};
+
+static struct ieee80211vap *urtw_vap_create(struct ieee80211com *,
+			    const char name[IFNAMSIZ], int unit, int opmode,
+			    int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
+			    const uint8_t mac[IEEE80211_ADDR_LEN]);
+static void		urtw_vap_delete(struct ieee80211vap *);
+static void		urtw_init(void *);
+static void		urtw_stop(struct ifnet *, int);
+static int		urtw_ioctl(struct ifnet *, u_long, caddr_t);
+static void		urtw_start(struct ifnet *);
+static int		urtw_alloc_rx_data_list(struct urtw_softc *);
+static int		urtw_alloc_tx_data_list(struct urtw_softc *);
+static void		urtw_free_data_list(struct urtw_softc *,
+			    usbd_pipe_handle, usbd_pipe_handle,
+			    struct urtw_data data[], int);
+static int		urtw_raw_xmit(struct ieee80211_node *, struct mbuf *,
+			    const struct ieee80211_bpf_params *);
+static void		urtw_scan_start(struct ieee80211com *);
+static void		urtw_scan_end(struct ieee80211com *);
+static void		urtw_set_channel(struct ieee80211com *);
+static void		urtw_update_mcast(struct ifnet *);
+static void		urtw_rxeof(usbd_xfer_handle, usbd_private_handle,
+			    usbd_status);
+static int		urtw_tx_start(struct urtw_softc *,
+			    struct ieee80211_node *, struct mbuf *, int);
+static void		urtw_txeof_low(usbd_xfer_handle, usbd_private_handle,
+			    usbd_status);
+static void		urtw_txeof_normal(usbd_xfer_handle, 
+			    usbd_private_handle, usbd_status);
+static int		urtw_newstate(struct ieee80211vap *,
+			    enum ieee80211_state, int);
+static void		urtw_ledtask(void *);
+static void		urtw_ledusbtask(void *);
+static void		urtw_ctxtask(void *);
+static void		urtw_task(void *);
+static void		urtw_watchdog(void *);
+static void		urtw_set_multi(void *);
+static int		urtw_isbmode(uint16_t);
+static uint16_t		urtw_rate2rtl(int);
+static uint16_t		urtw_rtl2rate(int);
+static usbd_status	urtw_set_rate(struct urtw_softc *);
+static usbd_status	urtw_update_msr(struct urtw_softc *);
+static usbd_status	urtw_read8_c(struct urtw_softc *, int, uint8_t *);
+static usbd_status	urtw_read16_c(struct urtw_softc *, int, uint16_t *);
+static usbd_status	urtw_read32_c(struct urtw_softc *, int, uint32_t *);
+static usbd_status	urtw_write8_c(struct urtw_softc *, int, uint8_t);
+static usbd_status	urtw_write16_c(struct urtw_softc *, int, uint16_t);
+static usbd_status	urtw_write32_c(struct urtw_softc *, int, uint32_t);
+static usbd_status	urtw_eprom_cs(struct urtw_softc *, int);
+static usbd_status	urtw_eprom_ck(struct urtw_softc *);
+static usbd_status	urtw_eprom_sendbits(struct urtw_softc *, int16_t *,
+			    int);
+static usbd_status	urtw_eprom_read32(struct urtw_softc *, uint32_t,
+			    uint32_t *);
+static usbd_status	urtw_eprom_readbit(struct urtw_softc *, int16_t *);
+static usbd_status	urtw_eprom_writebit(struct urtw_softc *, int16_t);
+static usbd_status	urtw_get_macaddr(struct urtw_softc *);
+static usbd_status	urtw_get_txpwr(struct urtw_softc *);
+static usbd_status	urtw_get_rfchip(struct urtw_softc *);
+static usbd_status	urtw_led_init(struct urtw_softc *);
+static usbd_status	urtw_8185_rf_pins_enable(struct urtw_softc *);
+static usbd_status	urtw_8185_tx_antenna(struct urtw_softc *, uint8_t);
+static usbd_status	urtw_8187_write_phy(struct urtw_softc *, uint8_t,
+			    uint32_t);
+static usbd_status	urtw_8187_write_phy_ofdm_c(struct urtw_softc *,
+			    uint8_t, uint32_t);
+static usbd_status	urtw_8187_write_phy_cck_c(struct urtw_softc *, uint8_t,
+			    uint32_t);
+static usbd_status	urtw_8225_setgain(struct urtw_softc *, int16_t);
+static usbd_status	urtw_8225_usb_init(struct urtw_softc *);
+static usbd_status	urtw_8225_write_c(struct urtw_softc *, uint8_t,
+			    uint16_t);
+static usbd_status	urtw_8225_write_s16(struct urtw_softc *, uint8_t, int,
+			    uint16_t *);
+static usbd_status	urtw_8225_read(struct urtw_softc *, uint8_t,
+			    uint32_t *);
+static usbd_status	urtw_8225_rf_init(struct urtw_softc *);
+static usbd_status	urtw_8225_rf_set_chan(struct urtw_softc *, int);
+static usbd_status	urtw_8225_rf_set_sens(struct urtw_softc *, int);
+static usbd_status	urtw_8225_set_txpwrlvl(struct urtw_softc *, int);
+static usbd_status	urtw_8225v2_rf_init(struct urtw_softc *);
+static usbd_status	urtw_8225v2_rf_set_chan(struct urtw_softc *, int);
+static usbd_status	urtw_8225v2_set_txpwrlvl(struct urtw_softc *, int);
+static usbd_status	urtw_8225v2_setgain(struct urtw_softc *, int16_t);
+static usbd_status	urtw_8225_isv2(struct urtw_softc *, int *);
+static usbd_status	urtw_read8e(struct urtw_softc *, int, uint8_t *);
+static usbd_status	urtw_write8e(struct urtw_softc *, int, uint8_t);
+static usbd_status	urtw_8180_set_anaparam(struct urtw_softc *, uint32_t);
+static usbd_status	urtw_8185_set_anaparam2(struct urtw_softc *, uint32_t);
+static usbd_status	urtw_open_pipes(struct urtw_softc *);
+static usbd_status	urtw_close_pipes(struct urtw_softc *);
+static usbd_status	urtw_intr_enable(struct urtw_softc *);
+static usbd_status	urtw_intr_disable(struct urtw_softc *);
+static usbd_status	urtw_reset(struct urtw_softc *);
+static usbd_status	urtw_led_on(struct urtw_softc *, int);
+static usbd_status	urtw_led_ctl(struct urtw_softc *, int);
+static usbd_status	urtw_led_blink(struct urtw_softc *);
+static usbd_status	urtw_led_mode0(struct urtw_softc *, int);
+static usbd_status	urtw_led_mode1(struct urtw_softc *, int);
+static usbd_status	urtw_led_mode2(struct urtw_softc *, int);
+static usbd_status	urtw_led_mode3(struct urtw_softc *, int);
+static usbd_status	urtw_rx_setconf(struct urtw_softc *);
+static usbd_status	urtw_rx_enable(struct urtw_softc *);
+static usbd_status	urtw_tx_enable(struct urtw_softc *sc);
+
+static int
+urtw_match(device_t dev)
+{
+	struct usb_attach_arg *uaa = device_get_ivars(dev);
+	const struct usb_devno *ud;
+
+	if (uaa->iface != NULL)
+		return UMATCH_NONE;
+	ud = usb_lookup(urtw_devs, uaa->vendor, uaa->product);
+
+	return (ud != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
+}
+
+static int
+urtw_attach(device_t dev)
+{
+	int ret = 0;
+	struct urtw_softc *sc = device_get_softc(dev);
+	struct usb_attach_arg *uaa = device_get_ivars(dev);
+	struct ieee80211com *ic;
+	struct ifnet *ifp;
+	uint8_t bands;
+	uint32_t data;
+	usbd_status error;
+
+	sc->sc_dev = dev;
+	sc->sc_udev = uaa->device;
+#ifdef URTW_DEBUG
+	sc->sc_debug = urtw_debug;
+#endif
+
+	mtx_init(&sc->sc_mtx, device_get_nameunit(sc->sc_dev), MTX_NETWORK_LOCK,
+	    MTX_DEF);
+	callout_init(&sc->sc_led_ch, 0);
+	callout_init(&sc->sc_watchdog_ch, 0);
+	usb_init_task(&sc->sc_ledtask, urtw_ledusbtask, sc);
+	usb_init_task(&sc->sc_ctxtask, urtw_ctxtask, sc);
+	usb_init_task(&sc->sc_task, urtw_task, sc);
+
+	urtw_read32_m(sc, URTW_RX, &data);
+	sc->sc_epromtype = (data & URTW_RX_9356SEL) ? URTW_EEPROM_93C56 :
+	    URTW_EEPROM_93C46;
+
+	error = urtw_get_rfchip(sc);
+	if (error != 0)
+		goto fail;
+	error = urtw_get_macaddr(sc);
+	if (error != 0)
+		goto fail;
+	error = urtw_get_txpwr(sc);
+	if (error != 0)
+		goto fail;
+	error = urtw_led_init(sc);
+	if (error != 0)
+		goto fail;
+
+	sc->sc_rts_retry = URTW_DEFAULT_RTS_RETRY;
+	sc->sc_tx_retry = URTW_DEFAULT_TX_RETRY;
+	sc->sc_currate = 3;
+	sc->sc_preamble_mode = urtw_preamble_mode;
+
+	ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
+	if (ifp == NULL) {
+		device_printf(sc->sc_dev, "can not allocate ifnet\n");
+		ret = ENXIO;
+		goto fail;
+	}
+
+	ifp->if_softc = sc;
+	if_initname(ifp, "urtw", device_get_unit(sc->sc_dev));
+	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
+	    IFF_NEEDSGIANT; /* USB stack is still under Giant lock */
+	ifp->if_init = urtw_init;
+	ifp->if_ioctl = urtw_ioctl;
+	ifp->if_start = urtw_start;
+	/* XXX URTW_TX_DATA_LIST_COUNT */
+	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
+	ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
+	IFQ_SET_READY(&ifp->if_snd);
+
+	ic = ifp->if_l2com;
+	ic->ic_ifp = ifp;
+	ic->ic_phytype = IEEE80211_T_OFDM;	/* not only, but not used */
+	ic->ic_opmode = IEEE80211_M_STA;	/* default to BSS mode */
+
+	/* set device capabilities */
+	ic->ic_caps =
+	    IEEE80211_C_STA |		/* station mode */
+	    IEEE80211_C_MONITOR |	/* monitor mode supported */
+	    IEEE80211_C_TXPMGT |	/* tx power management */
+	    IEEE80211_C_SHPREAMBLE |	/* short preamble supported */
+	    IEEE80211_C_SHSLOT |	/* short slot time supported */
+	    IEEE80211_C_BGSCAN |	/* capable of bg scanning */
+	    IEEE80211_C_WPA;		/* 802.11i */
+
+	IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_bssid);
+
+	bands = 0;
+	setbit(&bands, IEEE80211_MODE_11B);
+	setbit(&bands, IEEE80211_MODE_11G);
+	ieee80211_init_channels(ic, NULL, &bands);
+
+	ieee80211_ifattach(ic);
+	ic->ic_raw_xmit = urtw_raw_xmit;
+	ic->ic_scan_start = urtw_scan_start;
+	ic->ic_scan_end = urtw_scan_end;
+	ic->ic_set_channel = urtw_set_channel;
+
+	ic->ic_vap_create = urtw_vap_create;
+	ic->ic_vap_delete = urtw_vap_delete;
+	ic->ic_update_mcast = urtw_update_mcast;
+
+	bpfattach(ifp, DLT_IEEE802_11_RADIO,
+	    sizeof (struct ieee80211_frame) + sizeof(sc->sc_txtap));
+
+	sc->sc_rxtap_len = sizeof sc->sc_rxtap;
+	sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
+	sc->sc_rxtap.wr_ihdr.it_present = htole32(URTW_RX_RADIOTAP_PRESENT);
+
+	sc->sc_txtap_len = sizeof sc->sc_txtap;
+	sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
+	sc->sc_txtap.wt_ihdr.it_present = htole32(URTW_TX_RADIOTAP_PRESENT);
+
+	if (bootverbose)
+		ieee80211_announce(ic);
+
+	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
+fail:
+	return (ret);
+}
+
+static usbd_status
+urtw_open_pipes(struct urtw_softc *sc)
+{
+	usbd_status error;
+
+	/*
+	 * NB: there is no way to distinguish each pipes so we need to hardcode
+	 * pipe numbers
+	 */
+
+	/* tx pipe - low priority packets  */
+	error = usbd_open_pipe(sc->sc_iface, 0x2, USBD_EXCLUSIVE_USE,
+	    &sc->sc_txpipe_low);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not open Tx low pipe: %s\n",
+		    usbd_errstr(error));
+		goto fail;
+	}
+	/* tx pipe - normal priority packets  */
+	error = usbd_open_pipe(sc->sc_iface, 0x3, USBD_EXCLUSIVE_USE,
+	    &sc->sc_txpipe_normal);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not open Tx normal pipe: %s\n",
+		    usbd_errstr(error));
+		goto fail;
+	}
+	/* rx pipe  */
+	error = usbd_open_pipe(sc->sc_iface, 0x81, USBD_EXCLUSIVE_USE,
+	    &sc->sc_rxpipe);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not open Rx pipe: %s\n",
+		    usbd_errstr(error));
+		goto fail;
+	}
+
+	return (0);
+fail:
+	(void)urtw_close_pipes(sc);
+	return (error);
+}
+
+static usbd_status
+urtw_close_pipes(struct urtw_softc *sc)
+{
+	usbd_status error = 0;
+
+	if (sc->sc_rxpipe != NULL) {
+		error = usbd_close_pipe(sc->sc_rxpipe);
+		if (error != 0)
+			goto fail;
+		sc->sc_rxpipe = NULL;
+	}
+	if (sc->sc_txpipe_low != NULL) {
+		error = usbd_close_pipe(sc->sc_txpipe_low);
+		if (error != 0)
+			goto fail;
+		sc->sc_txpipe_low = NULL;
+	}
+	if (sc->sc_txpipe_normal != NULL) {
+		error = usbd_close_pipe(sc->sc_txpipe_normal);
+		if (error != 0)
+			goto fail;
+		sc->sc_txpipe_normal = NULL;
+	}
+fail:
+	return (error);
+}
+
+static int
+urtw_alloc_data_list(struct urtw_softc *sc, struct urtw_data data[],
+	int ndata, int maxsz, int fillmbuf)
+{
+	int i, error;
+
+	for (i = 0; i < ndata; i++) {
+		struct urtw_data *dp = &data[i];
+
+		dp->sc = sc;
+		dp->xfer = usbd_alloc_xfer(sc->sc_udev);
+		if (dp->xfer == NULL) {
+			device_printf(sc->sc_dev, "could not allocate xfer\n");
+			error = ENOMEM;
+			goto fail;
+		}
+		if (fillmbuf) {
+			dp->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
+			if (dp->m == NULL) {
+				device_printf(sc->sc_dev,
+				    "could not allocate rx mbuf\n");
+				error = ENOMEM;
+				goto fail;
+			}
+			dp->buf = mtod(dp->m, uint8_t *);
+		} else {
+			dp->m = NULL;
+			dp->buf = usbd_alloc_buffer(dp->xfer, maxsz);
+			if (dp->buf == NULL) {
+				device_printf(sc->sc_dev,
+				    "could not allocate buffer\n");
+				error = ENOMEM;
+				goto fail;
+			}
+			if (((unsigned long)dp->buf) % 4)
+				device_printf(sc->sc_dev,
+				    "warn: unaligned buffer %p\n", dp->buf);
+		}
+		dp->ni = NULL;
+	}
+
+	return 0;
+
+fail:	urtw_free_data_list(sc, NULL, NULL, data, ndata);
+	return error;
+}
+
+static void
+urtw_free_data_list(struct urtw_softc *sc, usbd_pipe_handle pipe1,
+    usbd_pipe_handle pipe2, struct urtw_data data[], int ndata)
+{
+	int i;
+
+	/* make sure no transfers are pending */
+	if (pipe1 != NULL)
+		usbd_abort_pipe(pipe1);
+	if (pipe2 != NULL)
+		usbd_abort_pipe(pipe2);
+
+	for (i = 0; i < ndata; i++) {
+		struct urtw_data *dp = &data[i];
+
+		if (dp->xfer != NULL) {
+			usbd_free_xfer(dp->xfer);
+			dp->xfer = NULL;
+		}
+		if (dp->m != NULL) {
+			m_freem(dp->m);
+			dp->m = NULL;
+		}
+		if (dp->ni != NULL) {
+			ieee80211_free_node(dp->ni);
+			dp->ni = NULL;
+		}
+	}
+}
+
+static int
+urtw_alloc_rx_data_list(struct urtw_softc *sc)
+{
+
+	return urtw_alloc_data_list(sc,
+	    sc->sc_rxdata, URTW_RX_DATA_LIST_COUNT, MCLBYTES, 1 /* mbufs */);
+}
+
+static void
+urtw_free_rx_data_list(struct urtw_softc *sc)
+{
+
+	urtw_free_data_list(sc, sc->sc_rxpipe, NULL, sc->sc_rxdata,
+	    URTW_RX_DATA_LIST_COUNT);
+}
+
+static int
+urtw_alloc_tx_data_list(struct urtw_softc *sc)
+{
+
+	return urtw_alloc_data_list(sc,
+	    sc->sc_txdata, URTW_TX_DATA_LIST_COUNT, URTW_TX_MAXSIZE,
+	    0 /* no mbufs */);
+}
+
+static void
+urtw_free_tx_data_list(struct urtw_softc *sc)
+{
+
+	urtw_free_data_list(sc, sc->sc_txpipe_low, sc->sc_txpipe_normal,
+	    sc->sc_txdata, URTW_TX_DATA_LIST_COUNT);
+}
+
+static usbd_status
+urtw_led_init(struct urtw_softc *sc)
+{
+	uint32_t rev;
+	usbd_status error;
+
+	urtw_read8_m(sc, URTW_PSR, &sc->sc_psr);
+	error = urtw_eprom_read32(sc, URTW_EPROM_SWREV, &rev);
+	if (error != 0)
+		goto fail;
+
+	switch (rev & URTW_EPROM_CID_MASK) {
+	case URTW_EPROM_CID_ALPHA0:
+		sc->sc_strategy = URTW_SW_LED_MODE1;
+		break;
+	case URTW_EPROM_CID_SERCOMM_PS:
+		sc->sc_strategy = URTW_SW_LED_MODE3;
+		break;
+	case URTW_EPROM_CID_HW_LED:
+		sc->sc_strategy = URTW_HW_LED;
+		break;
+	case URTW_EPROM_CID_RSVD0:
+	case URTW_EPROM_CID_RSVD1:
+	default:
+		sc->sc_strategy = URTW_SW_LED_MODE0;
+		break;
+	}
+
+	sc->sc_gpio_ledpin = URTW_LED_PIN_GPIO0;
+
+fail:
+	return (error);
+}
+
+/* XXX why we should allocalte memory buffer instead of using memory stack?  */
+static usbd_status
+urtw_8225_write_s16(struct urtw_softc *sc, uint8_t addr, int index,
+    uint16_t *data)
+{
+	uint8_t *buf;
+	uint16_t data16;
+	usb_device_request_t *req;
+	usbd_status error = 0;
+
+	data16 = *data;
+	req = (usb_device_request_t *)malloc(sizeof(usb_device_request_t),
+	    M_80211_VAP, M_NOWAIT | M_ZERO);
+	if (req == NULL) {
+		device_printf(sc->sc_dev, "could not allocate a memory\n");
+		goto fail0;
+	}
+	buf = (uint8_t *)malloc(2, M_80211_VAP, M_NOWAIT | M_ZERO);
+	if (req == NULL) {
+		device_printf(sc->sc_dev, "could not allocate a memory\n");
+		goto fail1;
+	}
+
+	req->bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req->bRequest = URTW_8187_SETREGS_REQ;
+	USETW(req->wValue, addr);
+	USETW(req->wIndex, index);
+	USETW(req->wLength, sizeof(uint16_t));
+	buf[0] = (data16 & 0x00ff);
+	buf[1] = (data16 & 0xff00) >> 8;
+
+	error = usbd_do_request(sc->sc_udev, req, buf);
+
+	free(buf, M_80211_VAP);
+fail1:	free(req, M_80211_VAP);
+fail0:	return (error);
+}
+
+static usbd_status
+urtw_8225_read(struct urtw_softc *sc, uint8_t addr, uint32_t *data)
+{
+	int i;
+	int16_t bit;
+	uint8_t rlen = 12, wlen = 6;
+	uint16_t o1, o2, o3, tmp;
+	uint32_t d2w = ((uint32_t)(addr & 0x1f)) << 27;
+	uint32_t mask = 0x80000000, value = 0;
+	usbd_status error;
+
+	urtw_read16_m(sc, URTW_RF_PINS_OUTPUT, &o1);
+	urtw_read16_m(sc, URTW_RF_PINS_ENABLE, &o2);
+	urtw_read16_m(sc, URTW_RF_PINS_SELECT, &o3);
+	urtw_write16_m(sc, URTW_RF_PINS_ENABLE, o2 | URTW_RF_PINS_MAGIC4);
+	urtw_write16_m(sc, URTW_RF_PINS_SELECT, o3 | URTW_RF_PINS_MAGIC4);
+	o1 &= ~URTW_RF_PINS_MAGIC4;
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, o1 | URTW_BB_HOST_BANG_EN);
+	DELAY(5);
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, o1);
+	DELAY(5);
+
+	for (i = 0; i < (wlen / 2); i++, mask = mask >> 1) {
+		bit = ((d2w & mask) != 0) ? 1 : 0;
+
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1);
+		DELAY(2);
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 |
+		    URTW_BB_HOST_BANG_CLK);
+		DELAY(2);
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 |
+		    URTW_BB_HOST_BANG_CLK);
+		DELAY(2);
+		mask = mask >> 1;
+		if (i == 2)
+			break;
+		bit = ((d2w & mask) != 0) ? 1 : 0;
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 |
+		    URTW_BB_HOST_BANG_CLK);
+		DELAY(2);
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 |
+		    URTW_BB_HOST_BANG_CLK);
+		DELAY(2);
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1);
+		DELAY(1);
+	}
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 | URTW_BB_HOST_BANG_RW |
+	    URTW_BB_HOST_BANG_CLK);
+	DELAY(2);
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 | URTW_BB_HOST_BANG_RW);
+	DELAY(2);
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, o1 | URTW_BB_HOST_BANG_RW);
+	DELAY(2);
+
+	mask = 0x800;
+	for (i = 0; i < rlen; i++, mask = mask >> 1) {
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT,
+		    o1 | URTW_BB_HOST_BANG_RW);
+		DELAY(2);
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT,
+		    o1 | URTW_BB_HOST_BANG_RW | URTW_BB_HOST_BANG_CLK);
+		DELAY(2);
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT,
+		    o1 | URTW_BB_HOST_BANG_RW | URTW_BB_HOST_BANG_CLK);
+		DELAY(2);
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT,
+		    o1 | URTW_BB_HOST_BANG_RW | URTW_BB_HOST_BANG_CLK);
+		DELAY(2);
+
+		urtw_read16_m(sc, URTW_RF_PINS_INPUT, &tmp);
+		value |= ((tmp & URTW_BB_HOST_BANG_CLK) ? mask : 0);
+		urtw_write16_m(sc, URTW_RF_PINS_OUTPUT,
+		    o1 | URTW_BB_HOST_BANG_RW);
+		DELAY(2);
+	}
+
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, o1 | URTW_BB_HOST_BANG_EN |
+	    URTW_BB_HOST_BANG_RW);
+	DELAY(2);
+
+	urtw_write16_m(sc, URTW_RF_PINS_ENABLE, o2);
+	urtw_write16_m(sc, URTW_RF_PINS_SELECT, o3);
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, URTW_RF_PINS_OUTPUT_MAGIC1);
+
+	if (data != NULL)
+		*data = value;
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8225_write_c(struct urtw_softc *sc, uint8_t addr, uint16_t data)
+{
+	uint16_t d80, d82, d84;
+	usbd_status error;
+
+	urtw_read16_m(sc, URTW_RF_PINS_OUTPUT, &d80);
+	d80 &= URTW_RF_PINS_MAGIC1;
+	urtw_read16_m(sc, URTW_RF_PINS_ENABLE, &d82);
+	urtw_read16_m(sc, URTW_RF_PINS_SELECT, &d84);
+	d84 &= URTW_RF_PINS_MAGIC2;
+	urtw_write16_m(sc, URTW_RF_PINS_ENABLE, d82 | URTW_RF_PINS_MAGIC3);
+	urtw_write16_m(sc, URTW_RF_PINS_SELECT, d84 | URTW_RF_PINS_MAGIC3);
+	DELAY(10);
+
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, d80 | URTW_BB_HOST_BANG_EN);
+	DELAY(2);
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, d80);
+	DELAY(10);
+
+	error = urtw_8225_write_s16(sc, addr, 0x8225, &data);
+	if (error != 0)
+		goto fail;
+
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, d80 | URTW_BB_HOST_BANG_EN);
+	DELAY(10);
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, d80 | URTW_BB_HOST_BANG_EN);
+	urtw_write16_m(sc, URTW_RF_PINS_SELECT, d84);
+	usbd_delay_ms(sc->sc_udev, 2);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8225_isv2(struct urtw_softc *sc, int *ret)
+{
+	uint32_t data;
+	usbd_status error;
+
+	*ret = 1;
+
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, URTW_RF_PINS_MAGIC5);
+	urtw_write16_m(sc, URTW_RF_PINS_SELECT, URTW_RF_PINS_MAGIC5);
+	urtw_write16_m(sc, URTW_RF_PINS_ENABLE, URTW_RF_PINS_MAGIC5);
+	usbd_delay_ms(sc->sc_udev, 500);
+
+	urtw_8225_write(sc, URTW_8225_ADDR_0_MAGIC,
+	    URTW_8225_ADDR_0_DATA_MAGIC1);
+
+	error = urtw_8225_read(sc, URTW_8225_ADDR_8_MAGIC, &data);
+	if (error != 0)
+		goto fail;
+	if (data != URTW_8225_ADDR_8_DATA_MAGIC1)
+		*ret = 0;
+	else {
+		error = urtw_8225_read(sc, URTW_8225_ADDR_9_MAGIC, &data);
+		if (error != 0)
+			goto fail;
+		if (data != URTW_8225_ADDR_9_DATA_MAGIC1)
+			*ret = 0;
+	}
+
+	urtw_8225_write(sc, URTW_8225_ADDR_0_MAGIC,
+	    URTW_8225_ADDR_0_DATA_MAGIC2);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_get_rfchip(struct urtw_softc *sc)
+{
+	int ret;
+	uint32_t data;
+	usbd_status error;
+
+	error = urtw_eprom_read32(sc, URTW_EPROM_RFCHIPID, &data);
+	if (error != 0)
+		goto fail;
+	switch (data & 0xff) {
+	case URTW_EPROM_RFCHIPID_RTL8225U:
+		error = urtw_8225_isv2(sc, &ret);
+		if (error != 0)
+			goto fail;
+		if (ret == 0) {
+			sc->sc_rf_init = urtw_8225_rf_init;
+			sc->sc_rf_set_sens = urtw_8225_rf_set_sens;
+			sc->sc_rf_set_chan = urtw_8225_rf_set_chan;
+		} else {
+			sc->sc_rf_init = urtw_8225v2_rf_init;
+			sc->sc_rf_set_chan = urtw_8225v2_rf_set_chan;
+		}
+		sc->sc_max_sens = URTW_8225_RF_MAX_SENS;
+		sc->sc_sens = URTW_8225_RF_DEF_SENS;
+		break;
+	default:
+		panic("unsupported RF chip %d\n", data & 0xff);
+		/* never reach  */
+	}
+
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_get_txpwr(struct urtw_softc *sc)
+{
+	int i, j;
+	uint32_t data;
+	usbd_status error;
+
+	error = urtw_eprom_read32(sc, URTW_EPROM_TXPW_BASE, &data);
+	if (error != 0)
+		goto fail;
+	sc->sc_txpwr_cck_base = data & 0xf;
+	sc->sc_txpwr_ofdm_base = (data >> 4) & 0xf;
+
+	for (i = 1, j = 0; i < 6; i += 2, j++) {
+		error = urtw_eprom_read32(sc, URTW_EPROM_TXPW0 + j, &data);
+		if (error != 0)
+			goto fail;
+		sc->sc_txpwr_cck[i] = data & 0xf;
+		sc->sc_txpwr_cck[i + 1] = (data & 0xf00) >> 8;
+		sc->sc_txpwr_ofdm[i] = (data & 0xf0) >> 4;
+		sc->sc_txpwr_ofdm[i + 1] = (data & 0xf000) >> 12;
+	}
+	for (i = 1, j = 0; i < 4; i += 2, j++) {
+		error = urtw_eprom_read32(sc, URTW_EPROM_TXPW1 + j, &data);
+		if (error != 0)
+			goto fail;
+		sc->sc_txpwr_cck[i + 6] = data & 0xf;
+		sc->sc_txpwr_cck[i + 6 + 1] = (data & 0xf00) >> 8;
+		sc->sc_txpwr_ofdm[i + 6] = (data & 0xf0) >> 4;
+		sc->sc_txpwr_ofdm[i + 6 + 1] = (data & 0xf000) >> 12;
+	}
+	for (i = 1, j = 0; i < 4; i += 2, j++) {
+		error = urtw_eprom_read32(sc, URTW_EPROM_TXPW2 + j, &data);
+		if (error != 0)
+			goto fail;
+		sc->sc_txpwr_cck[i + 6 + 4] = data & 0xf;
+		sc->sc_txpwr_cck[i + 6 + 4 + 1] = (data & 0xf00) >> 8;
+		sc->sc_txpwr_ofdm[i + 6 + 4] = (data & 0xf0) >> 4;
+		sc->sc_txpwr_ofdm[i + 6 + 4 + 1] = (data & 0xf000) >> 12;
+	}
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_get_macaddr(struct urtw_softc *sc)
+{
+	uint32_t data;
+	usbd_status error;
+
+	error = urtw_eprom_read32(sc, URTW_EPROM_MACADDR, &data);
+	if (error != 0)
+		goto fail;
+	sc->sc_bssid[0] = data & 0xff;
+	sc->sc_bssid[1] = (data & 0xff00) >> 8;
+	error = urtw_eprom_read32(sc, URTW_EPROM_MACADDR + 1, &data);
+	if (error != 0)
+		goto fail;
+	sc->sc_bssid[2] = data & 0xff;
+	sc->sc_bssid[3] = (data & 0xff00) >> 8;
+	error = urtw_eprom_read32(sc, URTW_EPROM_MACADDR + 2, &data);
+	if (error != 0)
+		goto fail;
+	sc->sc_bssid[4] = data & 0xff;
+	sc->sc_bssid[5] = (data & 0xff00) >> 8;
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_eprom_read32(struct urtw_softc *sc, uint32_t addr, uint32_t *data)
+{
+#define URTW_READCMD_LEN		3
+	int addrlen, i;
+	int16_t addrstr[8], data16, readcmd[] = { 1, 1, 0 };
+	usbd_status error;
+
+	/* NB: make sure the buffer is initialized  */
+	*data = 0;
+
+	/* enable EPROM programming */
+	urtw_write8_m(sc, URTW_EPROM_CMD, URTW_EPROM_CMD_PROGRAM_MODE);
+	DELAY(URTW_EPROM_DELAY);
+
+	error = urtw_eprom_cs(sc, URTW_EPROM_ENABLE);
+	if (error != 0)
+		goto fail;
+	error = urtw_eprom_ck(sc);
+	if (error != 0)
+		goto fail;
+	error = urtw_eprom_sendbits(sc, readcmd, URTW_READCMD_LEN);
+	if (error != 0)
+		goto fail;
+	if (sc->sc_epromtype == URTW_EEPROM_93C56) {
+		addrlen = 8;
+		addrstr[0] = addr & (1 << 7);
+		addrstr[1] = addr & (1 << 6);
+		addrstr[2] = addr & (1 << 5);
+		addrstr[3] = addr & (1 << 4);
+		addrstr[4] = addr & (1 << 3);
+		addrstr[5] = addr & (1 << 2);
+		addrstr[6] = addr & (1 << 1);
+		addrstr[7] = addr & (1 << 0);
+	} else {
+		addrlen=6;
+		addrstr[0] = addr & (1 << 5);
+		addrstr[1] = addr & (1 << 4);
+		addrstr[2] = addr & (1 << 3);
+		addrstr[3] = addr & (1 << 2);
+		addrstr[4] = addr & (1 << 1);
+		addrstr[5] = addr & (1 << 0);
+	}
+	error = urtw_eprom_sendbits(sc, addrstr, addrlen);
+	if (error != 0)
+		goto fail;
+
+	error = urtw_eprom_writebit(sc, 0);
+	if (error != 0)
+		goto fail;
+
+	for (i = 0; i < 16; i++) {
+		error = urtw_eprom_ck(sc);
+		if (error != 0)
+			goto fail;
+		error = urtw_eprom_readbit(sc, &data16);
+		if (error != 0)
+			goto fail;
+
+		(*data) |= (data16 << (15 - i));
+	}
+
+	error = urtw_eprom_cs(sc, URTW_EPROM_DISABLE);
+	if (error != 0)
+		goto fail;
+	error = urtw_eprom_ck(sc);
+	if (error != 0)
+		goto fail;
+
+	/* now disable EPROM programming */
+	urtw_write8_m(sc, URTW_EPROM_CMD, URTW_EPROM_CMD_NORMAL_MODE);
+fail:
+	return (error);
+#undef URTW_READCMD_LEN
+}
+
+static usbd_status
+urtw_eprom_readbit(struct urtw_softc *sc, int16_t *data)
+{
+	uint8_t data8;
+	usbd_status error;
+
+	urtw_read8_m(sc, URTW_EPROM_CMD, &data8);
+	*data = (data8 & URTW_EPROM_READBIT) ? 1 : 0;
+	DELAY(URTW_EPROM_DELAY);
+
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_eprom_sendbits(struct urtw_softc *sc, int16_t *buf, int buflen)
+{
+	int i = 0;
+	usbd_status error = 0;
+
+	for (i = 0; i < buflen; i++) {
+		error = urtw_eprom_writebit(sc, buf[i]);
+		if (error != 0)
+			goto fail;
+		error = urtw_eprom_ck(sc);
+		if (error != 0)
+			goto fail;
+	}
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_eprom_writebit(struct urtw_softc *sc, int16_t bit)
+{
+	uint8_t data;
+	usbd_status error;
+
+	urtw_read8_m(sc, URTW_EPROM_CMD, &data);
+	if (bit != 0)
+		urtw_write8_m(sc, URTW_EPROM_CMD, data | URTW_EPROM_WRITEBIT);
+	else
+		urtw_write8_m(sc, URTW_EPROM_CMD, data & ~URTW_EPROM_WRITEBIT);
+	DELAY(URTW_EPROM_DELAY);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_eprom_ck(struct urtw_softc *sc)
+{
+	uint8_t data;
+	usbd_status error;
+
+	/* masking  */
+	urtw_read8_m(sc, URTW_EPROM_CMD, &data);
+	urtw_write8_m(sc, URTW_EPROM_CMD, data | URTW_EPROM_CK);
+	DELAY(URTW_EPROM_DELAY);
+	/* unmasking  */
+	urtw_read8_m(sc, URTW_EPROM_CMD, &data);
+	urtw_write8_m(sc, URTW_EPROM_CMD, data & ~URTW_EPROM_CK);
+	DELAY(URTW_EPROM_DELAY);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_eprom_cs(struct urtw_softc *sc, int able)
+{
+	uint8_t data;
+	usbd_status error;
+
+	urtw_read8_m(sc, URTW_EPROM_CMD, &data);
+	if (able == URTW_EPROM_ENABLE)
+		urtw_write8_m(sc, URTW_EPROM_CMD, data | URTW_EPROM_CS);
+	else
+		urtw_write8_m(sc, URTW_EPROM_CMD, data & ~URTW_EPROM_CS);
+	DELAY(URTW_EPROM_DELAY);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_read8_c(struct urtw_softc *sc, int val, uint8_t *data)
+{
+	usb_device_request_t req;
+	usbd_status error;
+
+	req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	req.bRequest = URTW_8187_GETREGS_REQ;
+	USETW(req.wValue, val | 0xff00);
+	USETW(req.wIndex, 0);
+	USETW(req.wLength, sizeof(uint8_t));
+
+	error = usbd_do_request(sc->sc_udev, &req, data);
+	return (error);
+}
+
+static usbd_status
+urtw_read8e(struct urtw_softc *sc, int val, uint8_t *data)
+{
+	usb_device_request_t req;
+	usbd_status error;
+
+	req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	req.bRequest = URTW_8187_GETREGS_REQ;
+	USETW(req.wValue, val | 0xfe00);
+	USETW(req.wIndex, 0);
+	USETW(req.wLength, sizeof(uint8_t));
+
+	error = usbd_do_request(sc->sc_udev, &req, data);
+	return (error);
+}
+
+static usbd_status
+urtw_read16_c(struct urtw_softc *sc, int val, uint16_t *data)
+{
+	usb_device_request_t req;
+	usbd_status error;
+
+	req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	req.bRequest = URTW_8187_GETREGS_REQ;
+	USETW(req.wValue, val | 0xff00);
+	USETW(req.wIndex, 0);
+	USETW(req.wLength, sizeof(uint16_t));
+
+	error = usbd_do_request(sc->sc_udev, &req, data);
+	return (error);
+}
+
+static usbd_status
+urtw_read32_c(struct urtw_softc *sc, int val, uint32_t *data)
+{
+	usb_device_request_t req;
+	usbd_status error;
+
+	req.bmRequestType = UT_READ_VENDOR_DEVICE;
+	req.bRequest = URTW_8187_GETREGS_REQ;
+	USETW(req.wValue, val | 0xff00);
+	USETW(req.wIndex, 0);
+	USETW(req.wLength, sizeof(uint32_t));
+
+	error = usbd_do_request(sc->sc_udev, &req, data);
+	return (error);
+}
+
+static usbd_status
+urtw_write8_c(struct urtw_softc *sc, int val, uint8_t data)
+{
+	usb_device_request_t req;
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = URTW_8187_SETREGS_REQ;
+	USETW(req.wValue, val | 0xff00);
+	USETW(req.wIndex, 0);
+	USETW(req.wLength, sizeof(uint8_t));
+
+	return (usbd_do_request(sc->sc_udev, &req, &data));
+}
+
+static usbd_status
+urtw_write8e(struct urtw_softc *sc, int val, uint8_t data)
+{
+	usb_device_request_t req;
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = URTW_8187_SETREGS_REQ;
+	USETW(req.wValue, val | 0xfe00);
+	USETW(req.wIndex, 0);
+	USETW(req.wLength, sizeof(uint8_t));
+
+	return (usbd_do_request(sc->sc_udev, &req, &data));
+}
+
+static usbd_status
+urtw_write16_c(struct urtw_softc *sc, int val, uint16_t data)
+{
+	usb_device_request_t req;
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = URTW_8187_SETREGS_REQ;
+	USETW(req.wValue, val | 0xff00);
+	USETW(req.wIndex, 0);
+	USETW(req.wLength, sizeof(uint16_t));
+
+	return (usbd_do_request(sc->sc_udev, &req, &data));
+}
+
+static usbd_status
+urtw_write32_c(struct urtw_softc *sc, int val, uint32_t data)
+{
+	usb_device_request_t req;
+
+	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
+	req.bRequest = URTW_8187_SETREGS_REQ;
+	USETW(req.wValue, val | 0xff00);
+	USETW(req.wIndex, 0);
+	USETW(req.wLength, sizeof(uint32_t));
+
+	return (usbd_do_request(sc->sc_udev, &req, &data));
+}
+
+static int
+urtw_detach(device_t dev)
+{
+	struct urtw_softc *sc = device_get_softc(dev);
+	struct ifnet *ifp = sc->sc_ifp;
+	struct ieee80211com *ic = ifp->if_l2com;
+
+	if (!device_is_attached(dev))
+		return 0;
+
+	urtw_stop(ifp, 1);
+
+	callout_drain(&sc->sc_led_ch);
+	callout_drain(&sc->sc_watchdog_ch);
+	usb_rem_task(sc->sc_udev, &sc->sc_ledtask);
+	usb_rem_task(sc->sc_udev, &sc->sc_ctxtask);
+	usb_rem_task(sc->sc_udev, &sc->sc_task);
+
+	/* abort and free xfers */
+	urtw_free_tx_data_list(sc);
+	urtw_free_rx_data_list(sc);
+	urtw_close_pipes(sc);
+
+	bpfdetach(ifp);
+	ieee80211_ifdetach(ic);
+	if_free(ifp);
+	mtx_destroy(&sc->sc_mtx);
+
+	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
+
+	return (0);
+}
+
+static struct ieee80211vap *
+urtw_vap_create(struct ieee80211com *ic,
+	const char name[IFNAMSIZ], int unit, int opmode, int flags,
+	const uint8_t bssid[IEEE80211_ADDR_LEN],
+	const uint8_t mac[IEEE80211_ADDR_LEN])
+{
+	struct urtw_vap *uvp;
+	struct ieee80211vap *vap;
+
+	if (!TAILQ_EMPTY(&ic->ic_vaps))		/* only one at a time */
+		return (NULL);
+	uvp = (struct urtw_vap *) malloc(sizeof(struct urtw_vap),
+	    M_80211_VAP, M_NOWAIT | M_ZERO);
+	if (uvp == NULL)
+		return (NULL);
+	vap = &uvp->vap;
+	/* enable s/w bmiss handling for sta mode */
+	ieee80211_vap_setup(ic, vap, name, unit, opmode,
+	    flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
+
+	/* override state transition machine */
+	uvp->newstate = vap->iv_newstate;
+	vap->iv_newstate = urtw_newstate;
+
+	/* complete setup */
+	ieee80211_vap_attach(vap, ieee80211_media_change,
+	    ieee80211_media_status);
+	ic->ic_opmode = opmode;
+	return (vap);
+}
+
+static void
+urtw_vap_delete(struct ieee80211vap *vap)
+{
+	struct urtw_vap *uvp = URTW_VAP(vap);
+
+	ieee80211_vap_detach(vap);
+	free(uvp, M_80211_VAP);
+}
+
+static usbd_status
+urtw_set_mode(struct urtw_softc *sc, uint32_t mode)
+{
+	uint8_t data;
+	usbd_status error;
+
+	urtw_read8_m(sc, URTW_EPROM_CMD, &data);
+	data = (data & ~URTW_EPROM_CMD_MASK) | (mode << URTW_EPROM_CMD_SHIFT);
+	data = data & ~(URTW_EPROM_CS | URTW_EPROM_CK);
+	urtw_write8_m(sc, URTW_EPROM_CMD, data);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8180_set_anaparam(struct urtw_softc *sc, uint32_t val)
+{
+	uint8_t data;
+	usbd_status error;
+
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_CONFIG);
+	if (error)
+		goto fail;
+
+	urtw_read8_m(sc, URTW_CONFIG3, &data);
+	urtw_write8_m(sc, URTW_CONFIG3, data | URTW_CONFIG3_ANAPARAM_WRITE);
+	urtw_write32_m(sc, URTW_ANAPARAM, val);
+	urtw_read8_m(sc, URTW_CONFIG3, &data);
+	urtw_write8_m(sc, URTW_CONFIG3, data & ~URTW_CONFIG3_ANAPARAM_WRITE);
+
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_NORMAL);
+	if (error)
+		goto fail;
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8185_set_anaparam2(struct urtw_softc *sc, uint32_t val)
+{
+	uint8_t data;
+	usbd_status error;
+
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_CONFIG);
+	if (error)
+		goto fail;
+
+	urtw_read8_m(sc, URTW_CONFIG3, &data);
+	urtw_write8_m(sc, URTW_CONFIG3, data | URTW_CONFIG3_ANAPARAM_WRITE);
+	urtw_write32_m(sc, URTW_ANAPARAM2, val);
+	urtw_read8_m(sc, URTW_CONFIG3, &data);
+	urtw_write8_m(sc, URTW_CONFIG3, data & ~URTW_CONFIG3_ANAPARAM_WRITE);
+
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_NORMAL);
+	if (error)
+		goto fail;
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_intr_disable(struct urtw_softc *sc)
+{
+	usbd_status error;
+
+	urtw_write16_m(sc, URTW_INTR_MASK, 0);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_reset(struct urtw_softc *sc)
+{
+	uint8_t data;
+	usbd_status error;
+
+	error = urtw_8180_set_anaparam(sc, URTW_8225_ANAPARAM_ON);
+	if (error)
+		goto fail;
+	error = urtw_8185_set_anaparam2(sc, URTW_8225_ANAPARAM2_ON);
+	if (error)
+		goto fail;
+
+	error = urtw_intr_disable(sc);
+	if (error)
+		goto fail;
+	usbd_delay_ms(sc->sc_udev, 100);
+
+	error = urtw_write8e(sc, 0x18, 0x10);
+	if (error != 0)
+		goto fail;
+	error = urtw_write8e(sc, 0x18, 0x11);
+	if (error != 0)
+		goto fail;
+	error = urtw_write8e(sc, 0x18, 0x00);
+	if (error != 0)
+		goto fail;
+	usbd_delay_ms(sc->sc_udev, 100);
+
+	urtw_read8_m(sc, URTW_CMD, &data);
+	data = (data & 0x2) | URTW_CMD_RST;
+	urtw_write8_m(sc, URTW_CMD, data);
+	usbd_delay_ms(sc->sc_udev, 100);
+
+	urtw_read8_m(sc, URTW_CMD, &data);
+	if (data & URTW_CMD_RST) {
+		device_printf(sc->sc_dev, "reset timeout\n");
+		goto fail;
+	}
+
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_LOAD);
+	if (error)
+		goto fail;
+	usbd_delay_ms(sc->sc_udev, 100);
+
+	error = urtw_8180_set_anaparam(sc, URTW_8225_ANAPARAM_ON);
+	if (error)
+		goto fail;
+	error = urtw_8185_set_anaparam2(sc, URTW_8225_ANAPARAM2_ON);
+	if (error)
+		goto fail;
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_led_on(struct urtw_softc *sc, int type)
+{
+	usbd_status error;
+
+	if (type == URTW_LED_GPIO) {
+		switch (sc->sc_gpio_ledpin) {
+		case URTW_LED_PIN_GPIO0:
+			urtw_write8_m(sc, URTW_GPIO, 0x01);
+			urtw_write8_m(sc, URTW_GP_ENABLE, 0x00);
+			break;
+		default:
+			panic("unsupported LED PIN type 0x%x",
+			    sc->sc_gpio_ledpin);
+			/* never reach  */
+		}
+	} else {
+		panic("unsupported LED type 0x%x", type);
+		/* never reach  */
+	}
+
+	sc->sc_gpio_ledon = 1;
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_led_off(struct urtw_softc *sc, int type)
+{
+	usbd_status error;
+
+	if (type == URTW_LED_GPIO) {
+		switch (sc->sc_gpio_ledpin) {
+		case URTW_LED_PIN_GPIO0:
+			urtw_write8_m(sc, URTW_GPIO, URTW_GPIO_DATA_MAGIC1);
+			urtw_write8_m(sc,
+			    URTW_GP_ENABLE, URTW_GP_ENABLE_DATA_MAGIC1);
+			break;
+		default:
+			panic("unsupported LED PIN type 0x%x",
+			    sc->sc_gpio_ledpin);
+			/* never reach  */
+		}
+	} else {
+		panic("unsupported LED type 0x%x", type);
+		/* never reach  */
+	}
+
+	sc->sc_gpio_ledon = 0;
+
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_led_mode0(struct urtw_softc *sc, int mode)
+{
+
+	switch (mode) {
+	case URTW_LED_CTL_POWER_ON:
+		sc->sc_gpio_ledstate = URTW_LED_POWER_ON_BLINK;
+		break;
+	case URTW_LED_CTL_TX:
+		if (sc->sc_gpio_ledinprogress == 1)
+			return (0);
+
+		sc->sc_gpio_ledstate = URTW_LED_BLINK_NORMAL;
+		sc->sc_gpio_blinktime = 2;
+		break;
+	case URTW_LED_CTL_LINK:
+		sc->sc_gpio_ledstate = URTW_LED_ON;
+		break;
+	default:
+		panic("unsupported LED mode 0x%x", mode);
+		/* never reach  */
+	}
+
+	switch (sc->sc_gpio_ledstate) {
+	case URTW_LED_ON:
+		if (sc->sc_gpio_ledinprogress != 0)
+			break;
+		urtw_led_on(sc, URTW_LED_GPIO);
+		break;
+	case URTW_LED_BLINK_NORMAL:
+		if (sc->sc_gpio_ledinprogress != 0)
+			break;
+		sc->sc_gpio_ledinprogress = 1;
+		sc->sc_gpio_blinkstate = (sc->sc_gpio_ledon != 0) ?
+			URTW_LED_OFF : URTW_LED_ON;
+		callout_reset(&sc->sc_led_ch, hz, urtw_ledtask, sc);
+		break;
+	case URTW_LED_POWER_ON_BLINK:
+		urtw_led_on(sc, URTW_LED_GPIO);
+		usbd_delay_ms(sc->sc_udev, 100);
+		urtw_led_off(sc, URTW_LED_GPIO);
+		break;
+	default:
+		panic("unknown LED status 0x%x", sc->sc_gpio_ledstate);
+		/* never reach  */
+	}
+	return (0);
+}
+
+static usbd_status
+urtw_led_mode1(struct urtw_softc *sc, int mode)
+{
+
+	return (USBD_INVAL);
+}
+
+static usbd_status
+urtw_led_mode2(struct urtw_softc *sc, int mode)
+{
+
+	return (USBD_INVAL);
+}
+
+static usbd_status
+urtw_led_mode3(struct urtw_softc *sc, int mode)
+{
+
+	return (USBD_INVAL);
+}
+
+static usbd_status
+urtw_led_blink(struct urtw_softc *sc)
+{
+	uint8_t ing = 0;
+	usbd_status error;
+
+	if (sc->sc_gpio_blinkstate == URTW_LED_ON)
+		error = urtw_led_on(sc, URTW_LED_GPIO);
+	else
+		error = urtw_led_off(sc, URTW_LED_GPIO);
+	sc->sc_gpio_blinktime--;
+	if (sc->sc_gpio_blinktime == 0)
+		ing = 1;
+	else {
+		if (sc->sc_gpio_ledstate != URTW_LED_BLINK_NORMAL &&
+		    sc->sc_gpio_ledstate != URTW_LED_BLINK_SLOWLY &&
+		    sc->sc_gpio_ledstate != URTW_LED_BLINK_CM3)
+			ing = 1;
+	}
+	if (ing == 1) {
+		if (sc->sc_gpio_ledstate == URTW_LED_ON &&
+		    sc->sc_gpio_ledon == 0)
+			error = urtw_led_on(sc, URTW_LED_GPIO);
+		else if (sc->sc_gpio_ledstate == URTW_LED_OFF &&
+		    sc->sc_gpio_ledon == 1)
+			error = urtw_led_off(sc, URTW_LED_GPIO);
+
+		sc->sc_gpio_blinktime = 0;
+		sc->sc_gpio_ledinprogress = 0;
+		return (0);
+	}
+
+	sc->sc_gpio_blinkstate = (sc->sc_gpio_blinkstate != URTW_LED_ON) ?
+	    URTW_LED_ON : URTW_LED_OFF;
+
+	switch (sc->sc_gpio_ledstate) {
+	case URTW_LED_BLINK_NORMAL:
+		callout_reset(&sc->sc_led_ch, hz, urtw_ledtask, sc);
+		break;
+	default:
+		panic("unknown LED status 0x%x", sc->sc_gpio_ledstate);
+		/* never reach  */
+	}
+	return (0);
+}
+
+static void
+urtw_ledusbtask(void *arg)
+{
+	struct urtw_softc *sc = arg;
+
+	if (sc->sc_strategy != URTW_SW_LED_MODE0)
+		panic("could not process a LED strategy 0x%x", sc->sc_strategy);
+
+	urtw_led_blink(sc);
+}
+
+static void
+urtw_ledtask(void *arg)
+{
+	struct urtw_softc *sc = arg;
+
+	/*
+	 * NB: to change a status of the led we need at least a sleep so we
+	 * can't do it here
+	 */
+	usb_add_task(sc->sc_udev, &sc->sc_ledtask, USB_TASKQ_DRIVER);
+}
+
+static usbd_status
+urtw_led_ctl(struct urtw_softc *sc, int mode)
+{
+	usbd_status error = 0;
+
+	switch (sc->sc_strategy) {
+	case URTW_SW_LED_MODE0:
+		error = urtw_led_mode0(sc, mode);
+		break;
+	case URTW_SW_LED_MODE1:
+		error = urtw_led_mode1(sc, mode);
+		break;
+	case URTW_SW_LED_MODE2:
+		error = urtw_led_mode2(sc, mode);
+		break;
+	case URTW_SW_LED_MODE3:
+		error = urtw_led_mode3(sc, mode);
+		break;
+	default:
+		panic("unsupported LED mode %d\n", sc->sc_strategy);
+		/* never reach  */
+	}
+
+	return (error);
+}
+
+static usbd_status
+urtw_update_msr(struct urtw_softc *sc)
+{
+	struct ifnet *ifp = sc->sc_ifp;
+	struct ieee80211com *ic = ifp->if_l2com;
+	uint8_t data;
+	usbd_status error;
+
+	urtw_read8_m(sc, URTW_MSR, &data);
+	data &= ~URTW_MSR_LINK_MASK;
+
+	if (sc->sc_state == IEEE80211_S_RUN) {
+		switch (ic->ic_opmode) {
+		case IEEE80211_M_STA:
+		case IEEE80211_M_MONITOR:
+			data |= URTW_MSR_LINK_STA;
+			break;
+		case IEEE80211_M_IBSS:
+			data |= URTW_MSR_LINK_ADHOC;
+			break;
+		case IEEE80211_M_HOSTAP:
+			data |= URTW_MSR_LINK_HOSTAP;
+			break;
+		default:
+			panic("unsupported operation mode 0x%x\n",
+			    ic->ic_opmode);
+			/* never reach  */
+		}
+	} else
+		data |= URTW_MSR_LINK_NONE;
+
+	urtw_write8_m(sc, URTW_MSR, data);
+fail:
+	return (error);
+}
+
+static uint16_t
+urtw_rate2rtl(int rate)
+{
+#define N(a)	(sizeof(a) / sizeof((a)[0]))
+	int i;
+
+	for (i = 0; i < N(urtw_ratetable); i++) {
+		if (rate == urtw_ratetable[i].reg)
+			return urtw_ratetable[i].val;
+	}
+
+	return (3);
+#undef N
+}
+
+static uint16_t
+urtw_rtl2rate(int rate)
+{
+#define N(a)	(sizeof(a) / sizeof((a)[0]))
+	int i;
+
+	for (i = 0; i < N(urtw_ratetable); i++) {
+		if (rate == urtw_ratetable[i].val)
+			return urtw_ratetable[i].reg;
+	}
+
+	return (0);
+#undef N
+}
+
+static usbd_status
+urtw_set_rate(struct urtw_softc *sc)
+{
+	int i, basic_rate, min_rr_rate, max_rr_rate;
+	uint16_t data;
+	usbd_status error;
+
+	basic_rate = urtw_rate2rtl(48);
+	min_rr_rate = urtw_rate2rtl(12);
+	max_rr_rate = urtw_rate2rtl(48);
+
+	urtw_write8_m(sc, URTW_RESP_RATE,
+	    max_rr_rate << URTW_RESP_MAX_RATE_SHIFT |
+	    min_rr_rate << URTW_RESP_MIN_RATE_SHIFT);
+
+	urtw_read16_m(sc, URTW_BRSR, &data);
+	data &= ~URTW_BRSR_MBR_8185;
+
+	for (i = 0; i <= basic_rate; i++)
+		data |= (1 << i);
+
+	urtw_write16_m(sc, URTW_BRSR, data);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_intr_enable(struct urtw_softc *sc)
+{
+	usbd_status error;
+
+	urtw_write16_m(sc, URTW_INTR_MASK, 0xffff);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_adapter_start(struct urtw_softc *sc)
+{
+	struct ifnet *ifp = sc->sc_ifp;
+	struct ieee80211com *ic = ifp->if_l2com;
+	usbd_status error;
+
+	error = urtw_reset(sc);
+	if (error)
+		goto fail;
+
+	urtw_write8_m(sc, URTW_ADDR_MAGIC1, 0);
+	urtw_write8_m(sc, URTW_GPIO, 0);
+
+	/* for led  */
+	urtw_write8_m(sc, URTW_ADDR_MAGIC1, 4);
+	error = urtw_led_ctl(sc, URTW_LED_CTL_POWER_ON);
+	if (error != 0)
+		goto fail;
+
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_CONFIG);
+	if (error)
+		goto fail;
+	/* applying MAC address again.  */
+	urtw_write32_m(sc, URTW_MAC0, ((uint32_t *)ic->ic_myaddr)[0]);
+	urtw_write16_m(sc, URTW_MAC4, ((uint32_t *)ic->ic_myaddr)[1] & 0xffff);
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_NORMAL);
+	if (error)
+		goto fail;
+
+	error = urtw_update_msr(sc);
+	if (error)
+		goto fail;
+
+	urtw_write32_m(sc, URTW_INT_TIMEOUT, 0);
+	urtw_write8_m(sc, URTW_WPA_CONFIG, 0);
+	urtw_write8_m(sc, URTW_RATE_FALLBACK, 0x81);
+	error = urtw_set_rate(sc);
+	if (error != 0)
+		goto fail;
+
+	error = sc->sc_rf_init(sc);
+	if (error != 0)
+		goto fail;
+	if (sc->sc_rf_set_sens != NULL)
+		sc->sc_rf_set_sens(sc, sc->sc_sens);
+
+	/* XXX correct? to call write16  */
+	urtw_write16_m(sc, URTW_PSR, 1);
+	urtw_write16_m(sc, URTW_ADDR_MAGIC2, 0x10);
+	urtw_write8_m(sc, URTW_TALLY_SEL, 0x80);
+	urtw_write8_m(sc, URTW_ADDR_MAGIC3, 0x60);
+	/* XXX correct? to call write16  */
+	urtw_write16_m(sc, URTW_PSR, 0);
+	urtw_write8_m(sc, URTW_ADDR_MAGIC1, 4);
+
+	error = urtw_intr_enable(sc);
+	if (error != 0)
+		goto fail;
+
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_rx_setconf(struct urtw_softc *sc)
+{
+	struct ifnet *ifp = sc->sc_ifp;
+	struct ieee80211com *ic = ifp->if_l2com;
+	uint32_t data;
+	usbd_status error;
+
+	urtw_read32_m(sc, URTW_RX, &data);
+	data = data &~ URTW_RX_FILTER_MASK;
+#if 0
+	data = data | URTW_RX_FILTER_CTL;
+#endif
+	data = data | URTW_RX_FILTER_MNG | URTW_RX_FILTER_DATA;
+	data = data | URTW_RX_FILTER_BCAST | URTW_RX_FILTER_MCAST;
+
+	if (ic->ic_opmode == IEEE80211_M_MONITOR) {
+		data = data | URTW_RX_FILTER_ICVERR;
+		data = data | URTW_RX_FILTER_PWR;
+	}
+	if (sc->sc_crcmon == 1 && ic->ic_opmode == IEEE80211_M_MONITOR)
+		data = data | URTW_RX_FILTER_CRCERR;
+
+	if (ic->ic_opmode == IEEE80211_M_MONITOR ||
+	    (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC))) {
+		data = data | URTW_RX_FILTER_ALLMAC;
+	} else {
+		data = data | URTW_RX_FILTER_NICMAC;
+		data = data | URTW_RX_CHECK_BSSID;
+	}
+
+	data = data &~ URTW_RX_FIFO_THRESHOLD_MASK;
+	data = data | URTW_RX_FIFO_THRESHOLD_NONE | URTW_RX_AUTORESETPHY;
+	data = data &~ URTW_MAX_RX_DMA_MASK;
+	data = data | URTW_MAX_RX_DMA_2048 | URTW_RCR_ONLYERLPKT;
+
+	urtw_write32_m(sc, URTW_RX, data);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_rx_enable(struct urtw_softc *sc)
+{
+	int i;
+	struct urtw_data *rxdata;
+	uint8_t data;
+	usbd_status error;
+
+	/*
+	 * Start up the receive pipe.
+	 */
+	for (i = 0; i < URTW_RX_DATA_LIST_COUNT; i++) {
+		rxdata = &sc->sc_rxdata[i];
+
+		usbd_setup_xfer(rxdata->xfer, sc->sc_rxpipe, rxdata,
+		    rxdata->buf, MCLBYTES, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT,
+		    urtw_rxeof);
+		error = usbd_transfer(rxdata->xfer);
+		if (error != USBD_IN_PROGRESS && error != 0) {
+			device_printf(sc->sc_dev,
+			    "could not queue Rx transfer\n");
+			goto fail;
+		}
+	}
+
+	error = urtw_rx_setconf(sc);
+	if (error != 0)
+		goto fail;
+
+	urtw_read8_m(sc, URTW_CMD, &data);
+	urtw_write8_m(sc, URTW_CMD, data | URTW_CMD_RX_ENABLE);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_tx_enable(struct urtw_softc *sc)
+{
+	uint8_t data8;
+	uint32_t data;
+	usbd_status error;
+
+	urtw_read8_m(sc, URTW_CW_CONF, &data8);
+	data8 &= ~(URTW_CW_CONF_PERPACKET_CW | URTW_CW_CONF_PERPACKET_RETRY);
+	urtw_write8_m(sc, URTW_CW_CONF, data8);
+
+	urtw_read8_m(sc, URTW_TX_AGC_CTL, &data8);
+	data8 &= ~URTW_TX_AGC_CTL_PERPACKET_GAIN;
+	data8 &= ~URTW_TX_AGC_CTL_PERPACKET_ANTSEL;
+	data8 &= ~URTW_TX_AGC_CTL_FEEDBACK_ANT;
+	urtw_write8_m(sc, URTW_TX_AGC_CTL, data8);
+
+	urtw_read32_m(sc, URTW_TX_CONF, &data);
+	data &= ~URTW_TX_LOOPBACK_MASK;
+	data |= URTW_TX_LOOPBACK_NONE;
+	data &= ~(URTW_TX_DPRETRY_MASK | URTW_TX_RTSRETRY_MASK);
+	data |= sc->sc_tx_retry << URTW_TX_DPRETRY_SHIFT;
+	data |= sc->sc_rts_retry << URTW_TX_RTSRETRY_SHIFT;
+	data &= ~(URTW_TX_NOCRC | URTW_TX_MXDMA_MASK);
+	data |= URTW_TX_MXDMA_2048 | URTW_TX_CWMIN | URTW_TX_DISCW;
+	data &= ~URTW_TX_SWPLCPLEN;
+	data |= URTW_TX_NOICV;
+	urtw_write32_m(sc, URTW_TX_CONF, data);
+
+	urtw_read8_m(sc, URTW_CMD, &data8);
+	urtw_write8_m(sc, URTW_CMD, data8 | URTW_CMD_TX_ENABLE);
+fail:
+	return (error);
+}
+
+static void
+urtw_init(void *arg)
+{
+	int ret;
+	struct urtw_softc *sc = arg;
+	struct ifnet *ifp = sc->sc_ifp;
+	usbd_status error;
+
+	urtw_stop(ifp, 1);
+
+	error = urtw_adapter_start(sc);
+	if (error != 0)
+		goto fail;
+
+	/* reset softc variables  */
+	sc->sc_txidx = sc->sc_tx_low_queued = sc->sc_tx_normal_queued = 0;
+	sc->sc_txtimer = 0;
+
+	if (!(sc->sc_flags & URTW_INIT_ONCE)) {
+		error = usbd_set_config_no(sc->sc_udev, URTW_CONFIG_NO, 0);
+		if (error != 0) {
+			device_printf(sc->sc_dev,
+			    "could not set configuration no\n");
+			goto fail;
+		}
+		/* get the first interface handle */
+		error = usbd_device2interface_handle(sc->sc_udev,
+		    URTW_IFACE_INDEX, &sc->sc_iface);
+		if (error != 0) {
+			device_printf(sc->sc_dev,
+			    "could not get interface handle\n");
+			goto fail;
+		}
+		error = urtw_open_pipes(sc);
+		if (error != 0)
+			goto fail;
+		ret = urtw_alloc_rx_data_list(sc);
+		if (error != 0)
+			goto fail;
+		ret = urtw_alloc_tx_data_list(sc);
+		if (error != 0)
+			goto fail;
+		sc->sc_flags |= URTW_INIT_ONCE;
+	}
+
+	error = urtw_rx_enable(sc);
+	if (error != 0)
+		goto fail;
+	error = urtw_tx_enable(sc);
+	if (error != 0)
+		goto fail;
+
+	ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
+	ifp->if_drv_flags |= IFF_DRV_RUNNING;
+
+	callout_reset(&sc->sc_watchdog_ch, hz, urtw_watchdog, sc);
+fail:
+	return;
+}
+
+static void
+urtw_set_multi(void *arg)
+{
+	struct urtw_softc *sc = arg;
+	struct ifnet *ifp = sc->sc_ifp;
+
+	if (!(ifp->if_flags & IFF_UP))
+		return;
+
+	/*
+	 * XXX don't know how to set a device.  Lack of docs.  Just try to set
+	 * IFF_ALLMULTI flag here.
+	 */
+	IF_ADDR_LOCK(ifp);
+	ifp->if_flags |= IFF_ALLMULTI;
+	IF_ADDR_UNLOCK(ifp);
+}
+
+static int
+urtw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
+{
+	struct urtw_softc *sc = ifp->if_softc;
+	struct ieee80211com *ic = ifp->if_l2com;
+	struct ifreq *ifr = (struct ifreq *) data;
+	int error = 0, startall = 0;
+
+	switch (cmd) {
+	case SIOCSIFFLAGS:
+		mtx_lock(&Giant);
+		if (ifp->if_flags & IFF_UP) {
+			if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
+				if ((ifp->if_flags ^ sc->sc_if_flags) &
+				    (IFF_ALLMULTI | IFF_PROMISC))
+					urtw_set_multi(sc);
+			} else {
+				urtw_init(ifp->if_softc);
+				startall = 1;
+			}
+		} else {
+			if (ifp->if_drv_flags & IFF_DRV_RUNNING)
+				urtw_stop(ifp, 1);
+		}
+		sc->sc_if_flags = ifp->if_flags;
+		mtx_unlock(&Giant);
+		if (startall)
+			ieee80211_start_all(ic);
+		break;
+	case SIOCGIFMEDIA:
+		error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
+		break;
+	case SIOCGIFADDR:
+		error = ether_ioctl(ifp, cmd, data);
+		break;
+	default:
+		error = EINVAL;
+		break;
+	}
+
+	return error;
+}
+
+static void
+urtw_start(struct ifnet *ifp)
+{
+	struct urtw_softc *sc = ifp->if_softc;
+	struct ieee80211_node *ni;
+	struct mbuf *m;
+
+	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		return;
+
+	URTW_LOCK(sc);
+	for (;;) {
+		IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
+		if (m == NULL)
+			break;
+		if (sc->sc_tx_low_queued >= URTW_TX_DATA_LIST_COUNT ||
+		    sc->sc_tx_normal_queued >= URTW_TX_DATA_LIST_COUNT) {
+			IFQ_DRV_PREPEND(&ifp->if_snd, m);
+			ifp->if_drv_flags |= IFF_DRV_OACTIVE;
+			break;
+		}
+
+		ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
+		m->m_pkthdr.rcvif = NULL;
+		m = ieee80211_encap(ni, m);
+		if (m == NULL) {
+			ieee80211_free_node(ni);
+			ifp->if_oerrors++;
+			continue;
+		}
+
+		if (urtw_tx_start(sc, ni, m, URTW_PRIORITY_NORMAL) != 0) {
+			ieee80211_free_node(ni);
+			ifp->if_oerrors++;
+			break;
+		}
+
+		sc->sc_txtimer = 5;
+	}
+	URTW_UNLOCK(sc);
+}
+
+static void
+urtw_txeof_low(usbd_xfer_handle xfer, usbd_private_handle priv,
+    usbd_status status)
+{
+	struct urtw_data *data = priv;
+	struct urtw_softc *sc = data->sc;
+	struct ifnet *ifp = sc->sc_ifp;
+	struct mbuf *m;
+
+	if (status != USBD_NORMAL_COMPLETION) {
+		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
+			return;
+
+		device_printf(sc->sc_dev, "could not transmit buffer: %s\n",
+		    usbd_errstr(status));
+
+		if (status == USBD_STALLED)
+			usbd_clear_endpoint_stall_async(sc->sc_txpipe_low);
+
+		ifp->if_oerrors++;
+		return;
+	}
+
+	/*
+	 * Do any tx complete callback.  Note this must be done before releasing
+	 * the node reference.
+	 */
+	m = data->m;
+	if (m != NULL && m->m_flags & M_TXCB) {
+		ieee80211_process_callback(data->ni, m, 0);	/* XXX status? */
+		m_freem(m);
+		data->m = NULL;
+	}
+
+	ieee80211_free_node(data->ni);
+	data->ni = NULL;
+
+	sc->sc_txtimer = 0;
+	ifp->if_opackets++;
+
+	URTW_LOCK(sc);
+	sc->sc_tx_low_queued--;
+	ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
+	URTW_UNLOCK(sc);
+
+	urtw_start(ifp);
+}
+
+static void
+urtw_txeof_normal(usbd_xfer_handle xfer, usbd_private_handle priv,
+    usbd_status status)
+{
+	struct urtw_data *data = priv;
+	struct urtw_softc *sc = data->sc;
+	struct ifnet *ifp = sc->sc_ifp;
+	struct mbuf *m;
+
+	if (status != USBD_NORMAL_COMPLETION) {
+		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
+			return;
+
+		device_printf(sc->sc_dev, "could not transmit buffer: %s\n",
+		    usbd_errstr(status));
+
+		if (status == USBD_STALLED)
+			usbd_clear_endpoint_stall_async(sc->sc_txpipe_normal);
+
+		ifp->if_oerrors++;
+		return;
+	}
+
+	/*
+	 * Do any tx complete callback.  Note this must be done before releasing
+	 * the node reference.
+	 */
+	m = data->m;
+	if (m != NULL && m->m_flags & M_TXCB) {
+		ieee80211_process_callback(data->ni, m, 0);	/* XXX status? */
+		m_freem(m);
+		data->m = NULL;
+	}
+
+	ieee80211_free_node(data->ni);
+	data->ni = NULL;
+
+	sc->sc_txtimer = 0;
+	ifp->if_opackets++;
+
+	URTW_LOCK(sc);
+	sc->sc_tx_normal_queued--;
+	ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
+	URTW_UNLOCK(sc);
+
+	urtw_start(ifp);
+}
+
+static int
+urtw_tx_start(struct urtw_softc *sc, struct ieee80211_node *ni, struct mbuf *m0,
+    int prior)
+{
+	int xferlen;
+	struct ifnet *ifp = sc->sc_ifp;
+	struct ieee80211_frame *wh = mtod(m0, struct ieee80211_frame *);
+	struct ieee80211_key *k;
+	const struct ieee80211_txparam *tp;
+	struct ieee80211com *ic = ifp->if_l2com;
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct urtw_data *data;
+	usbd_status error;
+
+	URTW_ASSERT_LOCKED(sc);
+
+	/*
+	 * Software crypto.
+	 */
+	if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
+		k = ieee80211_crypto_encap(ni, m0);
+		if (k == NULL) {
+			device_printf(sc->sc_dev,
+			    "ieee80211_crypto_encap returns NULL.\n");
+			/* XXX we don't expect the fragmented frames  */
+			m_freem(m0);
+			return (ENOBUFS);
+		}
+
+		/* in case packet header moved, reset pointer */
+		wh = mtod(m0, struct ieee80211_frame *);
+	}
+
+	if (bpf_peers_present(ifp->if_bpf)) {
+		struct urtw_tx_radiotap_header *tap = &sc->sc_txtap;
+
+		/* XXX Are variables correct?  */
+		tap->wt_flags = 0;
+		tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq);
+		tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags);
+
+		bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0);
+	}
+
+	xferlen = m0->m_pkthdr.len + 4 * 3;
+	if((0 == xferlen % 64) || (0 == xferlen % 512))
+		xferlen += 1;
+
+	data = &sc->sc_txdata[sc->sc_txidx];
+	sc->sc_txidx = (sc->sc_txidx + 1) % URTW_TX_DATA_LIST_COUNT;
+
+	bzero(data->buf, URTW_TX_MAXSIZE);
+	data->buf[0] = m0->m_pkthdr.len & 0xff;
+	data->buf[1] = (m0->m_pkthdr.len & 0x0f00) >> 8;
+	data->buf[1] |= (1 << 7);
+
+	if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
+	    (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) &&
+	    (sc->sc_preamble_mode == URTW_PREAMBLE_MODE_SHORT) &&
+	    (sc->sc_currate != 0))
+		data->buf[2] |= 1;
+	if ((m0->m_pkthdr.len > vap->iv_rtsthreshold) &&
+	    prior == URTW_PRIORITY_LOW)
+		panic("TODO tx.");
+	if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG)
+		data->buf[2] |= (1 << 1);
+	/* RTS rate - 10 means we use a basic rate.  */
+	data->buf[2] |= (urtw_rate2rtl(2) << 3);
+	/*
+	 * XXX currently TX rate control depends on the rate value of
+	 * RX descriptor because I don't know how to we can control TX rate
+	 * in more smart way.  Please fix me you find a thing.
+	 */
+	data->buf[3] = sc->sc_currate;
+	if (prior == URTW_PRIORITY_NORMAL) {
+		tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
+		if (IEEE80211_IS_MULTICAST(wh->i_addr1))
+			data->buf[3] = urtw_rate2rtl(tp->mcastrate);
+		else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
+			data->buf[3] = urtw_rate2rtl(tp->ucastrate);
+	}
+	data->buf[8] = 3;		/* CW minimum  */
+	data->buf[8] |= (7 << 4);	/* CW maximum  */
+	data->buf[9] |= 11;		/* retry limitation  */
+
+	m_copydata(m0, 0, m0->m_pkthdr.len, (uint8_t *)&data->buf[12]);
+	data->ni = ni;
+	data->m = m0;
+
+	usbd_setup_xfer(data->xfer,
+	    (prior == URTW_PRIORITY_LOW) ? sc->sc_txpipe_low :
+	    sc->sc_txpipe_normal, data, data->buf, xferlen,
+	    USBD_FORCE_SHORT_XFER | USBD_NO_COPY, URTW_DATA_TIMEOUT,
+	    (prior == URTW_PRIORITY_LOW) ? urtw_txeof_low : urtw_txeof_normal);
+	error = usbd_transfer(data->xfer);
+	if (error != USBD_IN_PROGRESS && error != USBD_NORMAL_COMPLETION) {
+		device_printf(sc->sc_dev, "could not send frame: %s\n",
+		    usbd_errstr(error));
+		return EIO;
+	}
+
+	error = urtw_led_ctl(sc, URTW_LED_CTL_TX);
+	if (error != 0)
+		device_printf(sc->sc_dev, "could not control LED (%d)\n", error);
+
+	if (prior == URTW_PRIORITY_LOW)
+		sc->sc_tx_low_queued++;
+	else
+		sc->sc_tx_normal_queued++;
+
+	return (0);
+}
+
+static int
+urtw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
+    const struct ieee80211_bpf_params *params)
+{
+	struct ieee80211com *ic = ni->ni_ic;
+	struct ifnet *ifp = ic->ic_ifp;
+	struct urtw_softc *sc = ifp->if_softc;
+
+	/* prevent management frames from being sent if we're not ready */
+	if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
+		m_freem(m);
+		ieee80211_free_node(ni);
+		return ENETDOWN;
+	}
+	URTW_LOCK(sc);
+	if (sc->sc_tx_low_queued >= URTW_TX_DATA_LIST_COUNT ||
+	    sc->sc_tx_normal_queued >= URTW_TX_DATA_LIST_COUNT) {
+		ifp->if_drv_flags |= IFF_DRV_OACTIVE;
+		m_freem(m);
+		ieee80211_free_node(ni);
+		URTW_UNLOCK(sc);
+		return (ENOBUFS);		/* XXX */
+	}
+
+	ifp->if_opackets++;
+	if (urtw_tx_start(sc, ni, m, URTW_PRIORITY_LOW) != 0) {
+		ieee80211_free_node(ni);
+		ifp->if_oerrors++;
+		URTW_UNLOCK(sc);
+		return (EIO);
+	}
+
+	sc->sc_txtimer = 5;
+	URTW_UNLOCK(sc);
+	return (0);
+}
+
+static void
+urtw_scan_start(struct ieee80211com *ic)
+{
+
+	/* XXX do nothing?  */
+}
+
+static void
+urtw_scan_end(struct ieee80211com *ic)
+{
+
+	/* XXX do nothing?  */
+}
+
+static void
+urtw_set_channel(struct ieee80211com *ic)
+{
+	struct urtw_softc *sc  = ic->ic_ifp->if_softc;
+	struct ifnet *ifp = sc->sc_ifp;
+
+	/*
+	 * if the user set a channel explicitly using ifconfig(8) this function
+	 * can be called earlier than we're expected that in some cases the
+	 * initialization would be failed if setting a channel is called before
+	 * the init have done.
+	 */
+	if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
+		return;
+
+	sc->sc_ctxarg = URTW_SET_CHANNEL;
+	usb_add_task(sc->sc_udev, &sc->sc_ctxtask, USB_TASKQ_DRIVER);
+}
+
+static void
+urtw_update_mcast(struct ifnet *ifp)
+{
+
+	/* XXX do nothing?  */
+}
+
+static usbd_status
+urtw_8225_usb_init(struct urtw_softc *sc)
+{
+	uint8_t data;
+	usbd_status error;
+
+	urtw_write8_m(sc, URTW_RF_PINS_SELECT + 1, 0);
+	urtw_write8_m(sc, URTW_GPIO, 0);
+	error = urtw_read8e(sc, 0x53, &data);
+	if (error)
+		goto fail;
+	error = urtw_write8e(sc, 0x53, data | (1 << 7));
+	if (error)
+		goto fail;
+	urtw_write8_m(sc, URTW_RF_PINS_SELECT + 1, 4);
+	urtw_write8_m(sc, URTW_GPIO, 0x20);
+	urtw_write8_m(sc, URTW_GP_ENABLE, 0);
+
+	urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, 0x80);
+	urtw_write16_m(sc, URTW_RF_PINS_SELECT, 0x80);
+	urtw_write16_m(sc, URTW_RF_PINS_ENABLE, 0x80);
+
+	usbd_delay_ms(sc->sc_udev, 500);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8185_rf_pins_enable(struct urtw_softc *sc)
+{
+	usbd_status error = 0;
+
+	urtw_write16_m(sc, URTW_RF_PINS_ENABLE, 0x1ff7);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8187_write_phy(struct urtw_softc *sc, uint8_t addr, uint32_t data)
+{
+	uint32_t phyw;
+	usbd_status error;
+
+	phyw = ((data << 8) | (addr | 0x80));
+	urtw_write8_m(sc, URTW_PHY_MAGIC4, ((phyw & 0xff000000) >> 24));
+	urtw_write8_m(sc, URTW_PHY_MAGIC3, ((phyw & 0x00ff0000) >> 16));
+	urtw_write8_m(sc, URTW_PHY_MAGIC2, ((phyw & 0x0000ff00) >> 8));
+	urtw_write8_m(sc, URTW_PHY_MAGIC1, ((phyw & 0x000000ff)));
+	usbd_delay_ms(sc->sc_udev, 1);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8187_write_phy_ofdm_c(struct urtw_softc *sc, uint8_t addr, uint32_t data)
+{
+
+	data = data & 0xff;
+	return urtw_8187_write_phy(sc, addr, data);
+}
+
+static usbd_status
+urtw_8187_write_phy_cck_c(struct urtw_softc *sc, uint8_t addr, uint32_t data)
+{
+
+	data = data & 0xff;
+	return urtw_8187_write_phy(sc, addr, data | 0x10000);
+}
+
+static usbd_status
+urtw_8225_setgain(struct urtw_softc *sc, int16_t gain)
+{
+	usbd_status error;
+
+	urtw_8187_write_phy_ofdm(sc, 0x0d, urtw_8225_gain[gain * 4]);
+	urtw_8187_write_phy_ofdm(sc, 0x1b, urtw_8225_gain[gain * 4 + 2]);
+	urtw_8187_write_phy_ofdm(sc, 0x1d, urtw_8225_gain[gain * 4 + 3]);
+	urtw_8187_write_phy_ofdm(sc, 0x23, urtw_8225_gain[gain * 4 + 1]);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8225_set_txpwrlvl(struct urtw_softc *sc, int chan)
+{
+	int i, idx, set;
+	uint8_t *cck_pwltable;
+	uint8_t cck_pwrlvl_max, ofdm_pwrlvl_min, ofdm_pwrlvl_max;
+	uint8_t cck_pwrlvl = sc->sc_txpwr_cck[chan] & 0xff;
+	uint8_t ofdm_pwrlvl = sc->sc_txpwr_ofdm[chan] & 0xff;
+	usbd_status error;
+
+	cck_pwrlvl_max = 11;
+	ofdm_pwrlvl_max = 25;	/* 12 -> 25  */
+	ofdm_pwrlvl_min = 10;
+
+	/* CCK power setting */
+	cck_pwrlvl = (cck_pwrlvl > cck_pwrlvl_max) ? cck_pwrlvl_max : cck_pwrlvl;
+	idx = cck_pwrlvl % 6;
+	set = cck_pwrlvl / 6;
+	cck_pwltable = (chan == 14) ? urtw_8225_txpwr_cck_ch14 :
+	    urtw_8225_txpwr_cck;
+
+	urtw_write8_m(sc, URTW_TX_GAIN_CCK,
+	    urtw_8225_tx_gain_cck_ofdm[set] >> 1);
+	for (i = 0; i < 8; i++) {
+		urtw_8187_write_phy_cck(sc, 0x44 + i,
+		    cck_pwltable[idx * 8 + i]);
+	}
+	usbd_delay_ms(sc->sc_udev, 1);
+
+	/* OFDM power setting */
+	ofdm_pwrlvl = (ofdm_pwrlvl > (ofdm_pwrlvl_max - ofdm_pwrlvl_min)) ?
+	    ofdm_pwrlvl_max : ofdm_pwrlvl + ofdm_pwrlvl_min;
+	ofdm_pwrlvl = (ofdm_pwrlvl > 35) ? 35 : ofdm_pwrlvl;
+
+	idx = ofdm_pwrlvl % 6;
+	set = ofdm_pwrlvl / 6;
+
+	error = urtw_8185_set_anaparam2(sc, URTW_8225_ANAPARAM2_ON);
+	if (error)
+		goto fail;
+	urtw_8187_write_phy_ofdm(sc, 2, 0x42);
+	urtw_8187_write_phy_ofdm(sc, 6, 0);
+	urtw_8187_write_phy_ofdm(sc, 8, 0);
+
+	urtw_write8_m(sc, URTW_TX_GAIN_OFDM,
+	    urtw_8225_tx_gain_cck_ofdm[set] >> 1);
+	urtw_8187_write_phy_ofdm(sc, 0x5, urtw_8225_txpwr_ofdm[idx]);
+	urtw_8187_write_phy_ofdm(sc, 0x7, urtw_8225_txpwr_ofdm[idx]);
+	usbd_delay_ms(sc->sc_udev, 1);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8185_tx_antenna(struct urtw_softc *sc, uint8_t ant)
+{
+	usbd_status error;
+
+	urtw_write8_m(sc, URTW_TX_ANTENNA, ant);
+	usbd_delay_ms(sc->sc_udev, 1);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8225_rf_init(struct urtw_softc *sc)
+{
+#define N(a)	(sizeof(a) / sizeof((a)[0]))
+	int i;
+	uint16_t data;
+	usbd_status error;
+
+	error = urtw_8180_set_anaparam(sc, URTW_8225_ANAPARAM_ON);
+	if (error)
+		goto fail;
+
+	error = urtw_8225_usb_init(sc);
+	if (error)
+		goto fail;
+
+	urtw_write32_m(sc, URTW_RF_TIMING, 0x000a8008);
+	urtw_read16_m(sc, URTW_BRSR, &data);		/* XXX ??? */
+	urtw_write16_m(sc, URTW_BRSR, 0xffff);
+	urtw_write32_m(sc, URTW_RF_PARA, 0x100044);
+
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_CONFIG);
+	if (error)
+		goto fail;
+	urtw_write8_m(sc, URTW_CONFIG3, 0x44);
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_NORMAL);
+	if (error)
+		goto fail;
+
+	error = urtw_8185_rf_pins_enable(sc);
+	if (error)
+		goto fail;
+	usbd_delay_ms(sc->sc_udev, 1000);
+
+	for (i = 0; i < N(urtw_8225_rf_part1); i++) {
+		urtw_8225_write(sc, urtw_8225_rf_part1[i].reg,
+		    urtw_8225_rf_part1[i].val);
+		usbd_delay_ms(sc->sc_udev, 1);
+	}
+	usbd_delay_ms(sc->sc_udev, 100);
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_2_MAGIC, URTW_8225_ADDR_2_DATA_MAGIC1);
+	usbd_delay_ms(sc->sc_udev, 200);
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_2_MAGIC, URTW_8225_ADDR_2_DATA_MAGIC2);
+	usbd_delay_ms(sc->sc_udev, 200);
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_0_MAGIC, URTW_8225_ADDR_0_DATA_MAGIC3);
+
+	for (i = 0; i < 95; i++) {
+		urtw_8225_write(sc, URTW_8225_ADDR_1_MAGIC, (uint8_t)(i + 1));
+		urtw_8225_write(sc, URTW_8225_ADDR_2_MAGIC, urtw_8225_rxgain[i]);
+	}
+
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_0_MAGIC, URTW_8225_ADDR_0_DATA_MAGIC4);
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_0_MAGIC, URTW_8225_ADDR_0_DATA_MAGIC5);
+
+	for (i = 0; i < 128; i++) {
+		urtw_8187_write_phy_ofdm(sc, 0xb, urtw_8225_agc[i]);
+		usbd_delay_ms(sc->sc_udev, 1);
+		urtw_8187_write_phy_ofdm(sc, 0xa, (uint8_t)i + 0x80);
+		usbd_delay_ms(sc->sc_udev, 1);
+	}
+
+	for (i = 0; i < N(urtw_8225_rf_part2); i++) {
+		urtw_8187_write_phy_ofdm(sc, urtw_8225_rf_part2[i].reg,
+		    urtw_8225_rf_part2[i].val);
+		usbd_delay_ms(sc->sc_udev, 1);
+	}
+
+	error = urtw_8225_setgain(sc, 4);
+	if (error)
+		goto fail;
+
+	for (i = 0; i < N(urtw_8225_rf_part3); i++) {
+		urtw_8187_write_phy_cck(sc, urtw_8225_rf_part3[i].reg,
+		    urtw_8225_rf_part3[i].val);
+		usbd_delay_ms(sc->sc_udev, 1);
+	}
+
+	urtw_write8_m(sc, URTW_ADDR_MAGIC4, 0x0d);
+
+	error = urtw_8225_set_txpwrlvl(sc, 1);
+	if (error)
+		goto fail;
+
+	urtw_8187_write_phy_cck(sc, 0x10, 0x9b);
+	usbd_delay_ms(sc->sc_udev, 1);
+	urtw_8187_write_phy_ofdm(sc, 0x26, 0x90);
+	usbd_delay_ms(sc->sc_udev, 1);
+
+	/* TX ant A, 0x0 for B */
+	error = urtw_8185_tx_antenna(sc, 0x3);
+	if (error)
+		goto fail;
+	urtw_write32_m(sc, URTW_ADDR_MAGIC5, 0x3dc00002);
+
+	error = urtw_8225_rf_set_chan(sc, 1);
+fail:
+	return (error);
+#undef N
+}
+
+static usbd_status
+urtw_8225_rf_set_chan(struct urtw_softc *sc, int chan)
+{
+	struct ieee80211com *ic = sc->sc_ifp->if_l2com;
+	struct ieee80211_channel *c = ic->ic_curchan;
+	usbd_status error;
+
+	error = urtw_8225_set_txpwrlvl(sc, chan);
+	if (error)
+		goto fail;
+	urtw_8225_write(sc, URTW_8225_ADDR_7_MAGIC, urtw_8225_channel[chan]);
+	usbd_delay_ms(sc->sc_udev, 10);
+
+	urtw_write8_m(sc, URTW_SIFS, 0x22);
+
+	if (sc->sc_state == IEEE80211_S_ASSOC &&
+	    ic->ic_flags & IEEE80211_F_SHSLOT)
+		urtw_write8_m(sc, URTW_SLOT, 0x9);
+	else
+		urtw_write8_m(sc, URTW_SLOT, 0x14);
+
+	if (IEEE80211_IS_CHAN_G(c)) {
+		/* for G */
+		urtw_write8_m(sc, URTW_DIFS, 0x14);
+		urtw_write8_m(sc, URTW_EIFS, 0x5b - 0x14);
+		urtw_write8_m(sc, URTW_CW_VAL, 0x73);
+	} else {
+		/* for B */
+		urtw_write8_m(sc, URTW_DIFS, 0x24);
+		urtw_write8_m(sc, URTW_EIFS, 0x5b - 0x24);
+		urtw_write8_m(sc, URTW_CW_VAL, 0xa5);
+	}
+
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8225_rf_set_sens(struct urtw_softc *sc, int sens)
+{
+	usbd_status error;
+
+	if (sens < 0 || sens > 6)
+		return -1;
+
+	if (sens > 4)
+		urtw_8225_write(sc,
+		    URTW_8225_ADDR_C_MAGIC, URTW_8225_ADDR_C_DATA_MAGIC1);
+	else
+		urtw_8225_write(sc,
+		    URTW_8225_ADDR_C_MAGIC, URTW_8225_ADDR_C_DATA_MAGIC2);
+
+	sens = 6 - sens;
+	error = urtw_8225_setgain(sc, sens);
+	if (error)
+		goto fail;
+
+	urtw_8187_write_phy_cck(sc, 0x41, urtw_8225_threshold[sens]);
+
+fail:
+	return (error);
+}
+
+static void
+urtw_stop(struct ifnet *ifp, int disable)
+{
+	struct urtw_softc *sc = ifp->if_softc;
+
+	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
+
+	callout_stop(&sc->sc_led_ch);
+	callout_stop(&sc->sc_watchdog_ch);
+
+	if (sc->sc_rxpipe != NULL)
+		usbd_abort_pipe(sc->sc_rxpipe);
+	if (sc->sc_txpipe_low != NULL)
+		usbd_abort_pipe(sc->sc_txpipe_low);
+	if (sc->sc_txpipe_normal != NULL)
+		usbd_abort_pipe(sc->sc_txpipe_normal);
+}
+
+static int
+urtw_isbmode(uint16_t rate)
+{
+
+	rate = urtw_rtl2rate(rate);
+
+	return ((rate <= 22 && rate != 12 && rate != 18) ||
+	    rate == 44) ? (1) : (0);
+}
+
+static void
+urtw_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
+{
+	int actlen, flen, len, nf, rssi;
+	struct ieee80211_frame *wh;
+	struct ieee80211_node *ni;
+	struct mbuf *m, *mnew;
+	struct urtw_data *data = priv;
+	struct urtw_softc *sc = data->sc;
+	struct ifnet *ifp = sc->sc_ifp;
+	struct ieee80211com *ic = ifp->if_l2com;
+	uint8_t *desc, quality, rate;
+	usbd_status error;
+
+	if (status != USBD_NORMAL_COMPLETION) {
+		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
+			return;
+
+		if (status == USBD_STALLED)
+			usbd_clear_endpoint_stall_async(sc->sc_rxpipe);
+		ifp->if_ierrors++;
+		goto skip;
+	}
+
+	usbd_get_xfer_status(xfer, NULL, NULL, &actlen, NULL);
+	if (actlen < URTW_MIN_RXBUFSZ) {
+		ifp->if_ierrors++;
+		goto skip;
+	}
+
+	/* 4 dword and 4 byte CRC  */
+	len = actlen - (4 * 4);
+	desc = data->buf + len;
+	flen = ((desc[1] & 0x0f) << 8) + (desc[0] & 0xff);
+	if (flen > actlen) {
+		ifp->if_ierrors++;
+		goto skip;
+	}
+
+	rate = (desc[2] & 0xf0) >> 4;
+	quality = desc[4] & 0xff;
+	/* XXX correct?  */
+	rssi = (desc[6] & 0xfe) >> 1;
+	if (!urtw_isbmode(rate)) {
+		rssi = (rssi > 90) ? 90 : ((rssi < 25) ? 25 : rssi);
+		rssi = ((90 - rssi) * 100) / 65;
+	} else {
+		rssi = (rssi > 90) ? 95 : ((rssi < 30) ? 30 : rssi);
+		rssi = ((95 - rssi) * 100) / 65;
+	}
+
+	mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
+	if (mnew == NULL) {
+		ifp->if_ierrors++;
+		goto skip;
+	}
+
+	m = data->m;
+	data->m = mnew;
+	data->buf = mtod(mnew, uint8_t *);
+
+	/* finalize mbuf */
+	m->m_pkthdr.rcvif = ifp;
+	m->m_pkthdr.len = m->m_len = flen - 4;
+
+	if (bpf_peers_present(ifp->if_bpf)) {
+		struct urtw_rx_radiotap_header *tap = &sc->sc_rxtap;
+
+		/* XXX Are variables correct?  */
+		tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq);
+		tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
+		tap->wr_dbm_antsignal = (int8_t)rssi;
+
+		bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m);
+	}
+
+	wh = mtod(m, struct ieee80211_frame *);
+	if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_DATA)
+		sc->sc_currate = (rate > 0) ? rate : sc->sc_currate;
+	ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh);
+	/* XXX correct?  */
+	nf = (quality > 64) ? 0 : ((64 - quality) * 100) / 64;
+	/* send the frame to the 802.11 layer */
+	if (ni != NULL) {
+		(void) ieee80211_input(ni, m, rssi, -nf, 0);
+		/* node is no longer needed */
+		ieee80211_free_node(ni);
+	} else
+		(void) ieee80211_input_all(ic, m, rssi, -nf, 0);
+
+skip:	/* setup a new transfer */
+	usbd_setup_xfer(xfer, sc->sc_rxpipe, data, data->buf, MCLBYTES,
+	    USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, urtw_rxeof);
+	error = usbd_transfer(xfer);
+	if (error != USBD_IN_PROGRESS && error != 0)
+		device_printf(sc->sc_dev, "could not queue Rx transfer\n");
+}
+
+static int
+urtw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
+{
+	struct urtw_vap *rvp = URTW_VAP(vap);
+	struct ieee80211com *ic = vap->iv_ic;
+	struct urtw_softc *sc = ic->ic_ifp->if_softc;
+
+	DPRINTF(sc, URTW_DEBUG_STATE, "%s: %s -> %s\n", __func__,
+	    ieee80211_state_name[vap->iv_state],
+	    ieee80211_state_name[nstate]);
+
+	/* do it in a process context */
+	sc->sc_state = nstate;
+	sc->sc_arg = arg;
+
+	if (nstate == IEEE80211_S_INIT) {
+		rvp->newstate(vap, nstate, arg);
+		return (0);
+	} else {
+		usb_add_task(sc->sc_udev, &sc->sc_task, USB_TASKQ_DRIVER);
+		return (EINPROGRESS);
+	}
+}
+
+static usbd_status
+urtw_8225v2_setgain(struct urtw_softc *sc, int16_t gain)
+{
+	uint8_t *gainp;
+	usbd_status error;
+
+	/* XXX for A?  */
+	gainp = urtw_8225v2_gain_bg;
+	urtw_8187_write_phy_ofdm(sc, 0x0d, gainp[gain * 3]);
+	usbd_delay_ms(sc->sc_udev, 1);
+	urtw_8187_write_phy_ofdm(sc, 0x1b, gainp[gain * 3 + 1]);
+	usbd_delay_ms(sc->sc_udev, 1);
+	urtw_8187_write_phy_ofdm(sc, 0x1d, gainp[gain * 3 + 2]);
+	usbd_delay_ms(sc->sc_udev, 1);
+	urtw_8187_write_phy_ofdm(sc, 0x21, 0x17);
+	usbd_delay_ms(sc->sc_udev, 1);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8225v2_set_txpwrlvl(struct urtw_softc *sc, int chan)
+{
+	int i;
+	uint8_t *cck_pwrtable;
+	uint8_t cck_pwrlvl_max = 15, ofdm_pwrlvl_max = 25, ofdm_pwrlvl_min = 10;
+	uint8_t cck_pwrlvl = sc->sc_txpwr_cck[chan] & 0xff;
+	uint8_t ofdm_pwrlvl = sc->sc_txpwr_ofdm[chan] & 0xff;
+	usbd_status error;
+
+	/* CCK power setting */
+	cck_pwrlvl = (cck_pwrlvl > cck_pwrlvl_max) ? cck_pwrlvl_max : cck_pwrlvl;
+	cck_pwrlvl += sc->sc_txpwr_cck_base;
+	cck_pwrlvl = (cck_pwrlvl > 35) ? 35 : cck_pwrlvl;
+	cck_pwrtable = (chan == 14) ? urtw_8225v2_txpwr_cck_ch14 :
+	    urtw_8225v2_txpwr_cck;
+
+	for (i = 0; i < 8; i++)
+		urtw_8187_write_phy_cck(sc, 0x44 + i, cck_pwrtable[i]);
+
+	urtw_write8_m(sc, URTW_TX_GAIN_CCK,
+	    urtw_8225v2_tx_gain_cck_ofdm[cck_pwrlvl]);
+	usbd_delay_ms(sc->sc_udev, 1);
+
+	/* OFDM power setting */
+	ofdm_pwrlvl = (ofdm_pwrlvl > (ofdm_pwrlvl_max - ofdm_pwrlvl_min)) ?
+		ofdm_pwrlvl_max : ofdm_pwrlvl + ofdm_pwrlvl_min;
+	ofdm_pwrlvl += sc->sc_txpwr_ofdm_base;
+	ofdm_pwrlvl = (ofdm_pwrlvl > 35) ? 35 : ofdm_pwrlvl;
+
+	error = urtw_8185_set_anaparam2(sc, URTW_8225_ANAPARAM2_ON);
+	if (error)
+		goto fail;
+
+	urtw_8187_write_phy_ofdm(sc, 2, 0x42);
+	urtw_8187_write_phy_ofdm(sc, 5, 0x0);
+	urtw_8187_write_phy_ofdm(sc, 6, 0x40);
+	urtw_8187_write_phy_ofdm(sc, 7, 0x0);
+	urtw_8187_write_phy_ofdm(sc, 8, 0x40);
+
+	urtw_write8_m(sc, URTW_TX_GAIN_OFDM,
+	    urtw_8225v2_tx_gain_cck_ofdm[ofdm_pwrlvl]);
+	usbd_delay_ms(sc->sc_udev, 1);
+fail:
+	return (error);
+}
+
+static usbd_status
+urtw_8225v2_rf_init(struct urtw_softc *sc)
+{
+#define N(a)	(sizeof(a) / sizeof((a)[0]))
+	int i;
+	uint16_t data;
+	uint32_t data32;
+	usbd_status error;
+
+	error = urtw_8180_set_anaparam(sc, URTW_8225_ANAPARAM_ON);
+	if (error)
+		goto fail;
+
+	error = urtw_8225_usb_init(sc);
+	if (error)
+		goto fail;
+
+	urtw_write32_m(sc, URTW_RF_TIMING, 0x000a8008);
+	urtw_read16_m(sc, URTW_BRSR, &data);		/* XXX ??? */
+	urtw_write16_m(sc, URTW_BRSR, 0xffff);
+	urtw_write32_m(sc, URTW_RF_PARA, 0x100044);
+
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_CONFIG);
+	if (error)
+		goto fail;
+	urtw_write8_m(sc, URTW_CONFIG3, 0x44);
+	error = urtw_set_mode(sc, URTW_EPROM_CMD_NORMAL);
+	if (error)
+		goto fail;
+
+	error = urtw_8185_rf_pins_enable(sc);
+	if (error)
+		goto fail;
+
+	usbd_delay_ms(sc->sc_udev, 500);
+
+	for (i = 0; i < N(urtw_8225v2_rf_part1); i++) {
+		urtw_8225_write(sc, urtw_8225v2_rf_part1[i].reg,
+		    urtw_8225v2_rf_part1[i].val);
+	}
+	usbd_delay_ms(sc->sc_udev, 50);
+
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_0_MAGIC, URTW_8225_ADDR_0_DATA_MAGIC1);
+
+	for (i = 0; i < 95; i++) {
+		urtw_8225_write(sc, URTW_8225_ADDR_1_MAGIC, (uint8_t)(i + 1));
+		urtw_8225_write(sc, URTW_8225_ADDR_2_MAGIC,
+		    urtw_8225v2_rxgain[i]);
+	}
+
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_3_MAGIC, URTW_8225_ADDR_3_DATA_MAGIC1);
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_5_MAGIC, URTW_8225_ADDR_5_DATA_MAGIC1);
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_0_MAGIC, URTW_8225_ADDR_0_DATA_MAGIC2);
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_2_MAGIC, URTW_8225_ADDR_2_DATA_MAGIC1);
+	usbd_delay_ms(sc->sc_udev, 100);
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_2_MAGIC, URTW_8225_ADDR_2_DATA_MAGIC2);
+	usbd_delay_ms(sc->sc_udev, 100);
+
+	error = urtw_8225_read(sc, URTW_8225_ADDR_6_MAGIC, &data32);
+	if (error != 0)
+		goto fail;
+	if (data32 != URTW_8225_ADDR_6_DATA_MAGIC1)
+		device_printf(sc->sc_dev, "expect 0xe6!! (0x%x)\n", data32);
+	if (!(data32 & URTW_8225_ADDR_6_DATA_MAGIC2)) {
+		urtw_8225_write(sc,
+		    URTW_8225_ADDR_2_MAGIC, URTW_8225_ADDR_2_DATA_MAGIC1);
+		usbd_delay_ms(sc->sc_udev, 100);
+		urtw_8225_write(sc,
+		    URTW_8225_ADDR_2_MAGIC, URTW_8225_ADDR_2_DATA_MAGIC2);
+		usbd_delay_ms(sc->sc_udev, 50);
+		error = urtw_8225_read(sc, URTW_8225_ADDR_6_MAGIC, &data32);
+		if (error != 0)
+			goto fail;
+		if (!(data32 & URTW_8225_ADDR_6_DATA_MAGIC2))
+			device_printf(sc->sc_dev, "RF calibration failed\n");
+	}
+	usbd_delay_ms(sc->sc_udev, 100);
+
+	urtw_8225_write(sc,
+	    URTW_8225_ADDR_0_MAGIC, URTW_8225_ADDR_0_DATA_MAGIC6);
+	for (i = 0; i < 128; i++) {
+		urtw_8187_write_phy_ofdm(sc, 0xb, urtw_8225_agc[i]);
+		urtw_8187_write_phy_ofdm(sc, 0xa, (uint8_t)i + 0x80);
+	}
+
+	for (i = 0; i < N(urtw_8225v2_rf_part2); i++) {
+		urtw_8187_write_phy_ofdm(sc, urtw_8225v2_rf_part2[i].reg,
+		    urtw_8225v2_rf_part2[i].val);
+	}
+
+	error = urtw_8225v2_setgain(sc, 4);
+	if (error)
+		goto fail;
+
+	for (i = 0; i < N(urtw_8225v2_rf_part3); i++) {
+		urtw_8187_write_phy_cck(sc, urtw_8225v2_rf_part3[i].reg,
+		    urtw_8225v2_rf_part3[i].val);
+	}
+
+	urtw_write8_m(sc, URTW_ADDR_MAGIC4, 0x0d);
+
+	error = urtw_8225v2_set_txpwrlvl(sc, 1);
+	if (error)
+		goto fail;
+
+	urtw_8187_write_phy_cck(sc, 0x10, 0x9b);
+	urtw_8187_write_phy_ofdm(sc, 0x26, 0x90);
+
+	/* TX ant A, 0x0 for B */
+	error = urtw_8185_tx_antenna(sc, 0x3);
+	if (error)
+		goto fail;
+	urtw_write32_m(sc, URTW_ADDR_MAGIC5, 0x3dc00002);
+
+	error = urtw_8225_rf_set_chan(sc, 1);
+fail:
+	return (error);
+#undef N
+}
+
+static usbd_status
+urtw_8225v2_rf_set_chan(struct urtw_softc *sc, int chan)
+{
+	struct ieee80211com *ic = sc->sc_ifp->if_l2com;
+	struct ieee80211_channel *c = ic->ic_curchan;
+	usbd_status error;
+
+	error = urtw_8225v2_set_txpwrlvl(sc, chan);
+	if (error)
+		goto fail;
+
+	urtw_8225_write(sc, URTW_8225_ADDR_7_MAGIC, urtw_8225_channel[chan]);
+	usbd_delay_ms(sc->sc_udev, 10);
+
+	urtw_write8_m(sc, URTW_SIFS, 0x22);
+
+	if(sc->sc_state == IEEE80211_S_ASSOC &&
+	    ic->ic_flags & IEEE80211_F_SHSLOT)
+		urtw_write8_m(sc, URTW_SLOT, 0x9);
+	else
+		urtw_write8_m(sc, URTW_SLOT, 0x14);
+
+	if (IEEE80211_IS_CHAN_G(c)) {
+		/* for G */
+		urtw_write8_m(sc, URTW_DIFS, 0x14);
+		urtw_write8_m(sc, URTW_EIFS, 0x5b - 0x14);
+		urtw_write8_m(sc, URTW_CW_VAL, 0x73);
+	} else {
+		/* for B */
+		urtw_write8_m(sc, URTW_DIFS, 0x24);
+		urtw_write8_m(sc, URTW_EIFS, 0x5b - 0x24);
+		urtw_write8_m(sc, URTW_CW_VAL, 0xa5);
+	}
+
+fail:
+	return (error);
+}
+
+static void
+urtw_ctxtask(void *arg)
+{
+	struct urtw_softc *sc = arg;
+	struct ifnet *ifp = sc->sc_ifp;
+	struct ieee80211com *ic = ifp->if_l2com;
+	uint32_t data;
+	usbd_status error;
+
+	switch (sc->sc_ctxarg) {
+	case URTW_SET_CHANNEL:
+		/*
+		 * during changing th channel we need to temporarily be disable 
+		 * TX.
+		 */
+		urtw_read32_m(sc, URTW_TX_CONF, &data);
+		data &= ~URTW_TX_LOOPBACK_MASK;
+		urtw_write32_m(sc, URTW_TX_CONF, data | URTW_TX_LOOPBACK_MAC);
+		error = sc->sc_rf_set_chan(sc,
+		    ieee80211_chan2ieee(ic, ic->ic_curchan));
+		if (error != 0)
+			goto fail;
+		usbd_delay_ms(sc->sc_udev, 10);
+		urtw_write32_m(sc, URTW_TX_CONF, data | URTW_TX_LOOPBACK_NONE);
+		break;
+	default:
+		panic("unknown argument.\n");
+	}
+
+fail:
+	if (error != 0)
+		device_printf(sc->sc_dev, "could not change the channel\n");
+	return;
+}
+
+static void
+urtw_task(void *arg)
+{
+	struct urtw_softc *sc = arg;
+	struct ifnet *ifp = sc->sc_ifp;
+	struct ieee80211com *ic = ifp->if_l2com;
+	struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
+	struct ieee80211_node *ni = vap->iv_bss;
+	struct urtw_vap *uvp = URTW_VAP(vap);
+	usbd_status error = 0;
+
+	switch (sc->sc_state) {
+	case IEEE80211_S_RUN:
+		/* setting bssid.  */
+		urtw_write32_m(sc, URTW_BSSID, ((uint32_t *)ni->ni_bssid)[0]);
+		urtw_write16_m(sc, URTW_BSSID + 4,
+		    ((uint16_t *)ni->ni_bssid)[2]);
+		urtw_update_msr(sc);
+		/* XXX maybe the below would be incorrect.  */
+		urtw_write16_m(sc, URTW_ATIM_WND, 2);
+		urtw_write16_m(sc, URTW_ATIM_TR_ITV, 100);
+		urtw_write16_m(sc, URTW_BEACON_INTERVAL, 0x64);
+		urtw_write16_m(sc, URTW_BEACON_INTERVAL_TIME, 100);
+		error = urtw_led_ctl(sc, URTW_LED_CTL_LINK);
+		if (error != 0)
+			device_printf(sc->sc_dev,
+			    "could not control LED (%d)\n", error);
+		break;
+	default:
+		break;
+	}
+
+fail:
+	if (error != 0)
+		printf("error duing processing RUN state.");
+
+	IEEE80211_LOCK(ic);
+	uvp->newstate(vap, sc->sc_state, sc->sc_arg);
+	if (vap->iv_newstate_cb != NULL)
+		vap->iv_newstate_cb(vap, sc->sc_state, sc->sc_arg);
+	IEEE80211_UNLOCK(ic);
+}
+
+static void
+urtw_watchdog(void *arg)
+{
+	struct urtw_softc *sc = arg;
+	struct ifnet *ifp = sc->sc_ifp;
+
+	if (sc->sc_txtimer > 0) {
+		if (--sc->sc_txtimer == 0) {
+			device_printf(sc->sc_dev, "device timeout\n");
+			ifp->if_oerrors++;
+			return;
+		}
+		callout_reset(&sc->sc_watchdog_ch, hz, urtw_watchdog, sc);
+	}
+}
+
+static device_method_t urtw_methods[] = {
+	DEVMETHOD(device_probe, urtw_match),
+	DEVMETHOD(device_attach, urtw_attach),
+	DEVMETHOD(device_detach, urtw_detach),
+	{ 0, 0 }
+};
+static driver_t urtw_driver = {
+	"urtw",
+	urtw_methods,
+	sizeof(struct urtw_softc)
+};
+static devclass_t urtw_devclass;
+
+DRIVER_MODULE(urtw, uhub, urtw_driver, urtw_devclass, usbd_driver_load, 0);
+MODULE_DEPEND(urtw, wlan, 1, 1, 1);
+MODULE_DEPEND(urtw, usb, 1, 1, 1);
diff --git a/sys/dev/usb/if_urtwreg.h b/sys/dev/usb/if_urtwreg.h
new file mode 100644
index 0000000..7a9baa3
--- /dev/null
+++ b/sys/dev/usb/if_urtwreg.h
@@ -0,0 +1,256 @@
+/*	$FreeBSD$	*/
+
+/*-
+ * Copyright (c) 2008 Weongyo Jeong <weongyo@FreeBSD.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define URTW_CONFIG_NO			1
+#define URTW_IFACE_INDEX		0
+
+/* for 8187  */
+#define URTW_MAC0			0x0000		/* 1 byte  */
+#define URTW_MAC1			0x0001		/* 1 byte  */
+#define URTW_MAC2			0x0002		/* 1 byte  */
+#define URTW_MAC3			0x0003		/* 1 byte  */
+#define URTW_MAC4			0x0004		/* 1 byte  */
+#define URTW_MAC5			0x0005		/* 1 byte  */
+#define URTW_BRSR			0x002c		/* 2 byte  */
+#define URTW_BRSR_MBR_8185		(0x0fff)
+#define	URTW_BSSID			0x002e		/* 6 byte  */
+#define URTW_RESP_RATE			0x0034		/* 1 byte  */
+#define URTW_RESP_MAX_RATE_SHIFT	(4)
+#define URTW_RESP_MIN_RATE_SHIFT	(0)
+#define URTW_EIFS			0x0035		/* 1 byte  */
+#define URTW_INTR_MASK			0x003c		/* 2 byte  */
+#define URTW_CMD			0x0037		/* 1 byte  */
+#define URTW_CMD_TX_ENABLE		(0x4)
+#define URTW_CMD_RX_ENABLE		(0x8)
+#define URTW_CMD_RST			(0x10)
+#define URTW_TX_CONF			0x0040		/* 4 byte  */
+#define URTW_TX_LOOPBACK_SHIFT		(17)
+#define URTW_TX_LOOPBACK_NONE		(0 << URTW_TX_LOOPBACK_SHIFT)
+#define URTW_TX_LOOPBACK_MAC		(1 << URTW_TX_LOOPBACK_SHIFT)
+#define URTW_TX_LOOPBACK_BASEBAND	(2 << URTW_TX_LOOPBACK_SHIFT)
+#define URTW_TX_LOOPBACK_CONTINUE	(3 << URTW_TX_LOOPBACK_SHIFT)
+#define URTW_TX_LOOPBACK_MASK		(0x60000)
+#define URTW_TX_DPRETRY_MASK		(0xff00)
+#define URTW_TX_RTSRETRY_MASK		(0xff)
+#define URTW_TX_DPRETRY_SHIFT		(0)
+#define URTW_TX_RTSRETRY_SHIFT		(8)
+#define URTW_TX_NOCRC			(0x10000)
+#define URTW_TX_MXDMA_MASK		(0xe00000)
+#define URTW_TX_MXDMA_1024		(6 << URTW_TX_MXDMA_SHIFT)
+#define URTW_TX_MXDMA_2048		(7 << URTW_TX_MXDMA_SHIFT)
+#define URTW_TX_MXDMA_SHIFT		(21)
+#define URTW_TX_CWMIN			(1 << 31)
+#define URTW_TX_DISCW			(1 << 20)
+#define URTW_TX_SWPLCPLEN		(1 << 24)
+#define URTW_TX_NOICV			(0x80000)
+#define URTW_RX				0x0044		/* 4 byte  */
+#define URTW_RX_9356SEL			(1 << 6)
+#define URTW_RX_FILTER_MASK			\
+	(URTW_RX_FILTER_ALLMAC | URTW_RX_FILTER_NICMAC | URTW_RX_FILTER_MCAST | \
+	URTW_RX_FILTER_BCAST | URTW_RX_FILTER_CRCERR | URTW_RX_FILTER_ICVERR | \
+	URTW_RX_FILTER_DATA | URTW_RX_FILTER_CTL | URTW_RX_FILTER_MNG |	\
+	(1 << 21) |							\
+	URTW_RX_FILTER_PWR | URTW_RX_CHECK_BSSID)
+#define URTW_RX_FILTER_ALLMAC		(0x00000001)
+#define URTW_RX_FILTER_NICMAC		(0x00000002)
+#define URTW_RX_FILTER_MCAST		(0x00000004)
+#define URTW_RX_FILTER_BCAST		(0x00000008)
+#define URTW_RX_FILTER_CRCERR		(0x00000020)
+#define URTW_RX_FILTER_ICVERR		(0x00001000)
+#define URTW_RX_FILTER_DATA		(0x00040000)
+#define URTW_RX_FILTER_CTL		(0x00080000)
+#define URTW_RX_FILTER_MNG		(0x00100000)
+#define URTW_RX_FILTER_PWR		(0x00400000)
+#define URTW_RX_CHECK_BSSID		(0x00800000)
+#define URTW_RX_FIFO_THRESHOLD_MASK	((1 << 13) | (1 << 14) | (1 << 15))
+#define URTW_RX_FIFO_THRESHOLD_SHIFT	(13)
+#define URTW_RX_FIFO_THRESHOLD_128	(3)
+#define URTW_RX_FIFO_THRESHOLD_256	(4)
+#define URTW_RX_FIFO_THRESHOLD_512	(5)
+#define URTW_RX_FIFO_THRESHOLD_1024	(6)
+#define URTW_RX_FIFO_THRESHOLD_NONE	(7 << URTW_RX_FIFO_THRESHOLD_SHIFT)
+#define URTW_RX_AUTORESETPHY		(1 << URTW_RX_AUTORESETPHY_SHIFT)
+#define URTW_RX_AUTORESETPHY_SHIFT	(28)
+#define URTW_MAX_RX_DMA_MASK		((1<<8) | (1<<9) | (1<<10))
+#define URTW_MAX_RX_DMA_2048		(7 << URTW_MAX_RX_DMA_SHIFT)
+#define URTW_MAX_RX_DMA_1024		(6)
+#define URTW_MAX_RX_DMA_SHIFT		(10)
+#define URTW_RCR_ONLYERLPKT		(1 << 31)
+#define URTW_INT_TIMEOUT		0x0048		/* 4 byte  */
+#define URTW_EPROM_CMD			0x0050		/* 1 byte  */
+#define URTW_EPROM_CMD_NORMAL		(0x0)
+#define URTW_EPROM_CMD_NORMAL_MODE				\
+	(URTW_EPROM_CMD_NORMAL << URTW_EPROM_CMD_SHIFT)
+#define URTW_EPROM_CMD_LOAD		(0x1)
+#define URTW_EPROM_CMD_PROGRAM		(0x2)
+#define URTW_EPROM_CMD_PROGRAM_MODE				\
+	(URTW_EPROM_CMD_PROGRAM << URTW_EPROM_CMD_SHIFT)
+#define URTW_EPROM_CMD_CONFIG		(0x3)
+#define URTW_EPROM_CMD_SHIFT		(6)
+#define URTW_EPROM_CMD_MASK		((1 << 7) | (1 << 6))
+#define URTW_EPROM_READBIT		(0x1)
+#define URTW_EPROM_WRITEBIT		(0x2)
+#define URTW_EPROM_CK			(0x4)
+#define URTW_EPROM_CS			(0x8)
+#define URTW_CONFIG2			0x0053
+#define URTW_ANAPARAM			0x0054		/* 4 byte  */
+#define URTW_8225_ANAPARAM_ON		(0xa0000a59)
+#define URTW_MSR			0x0058		/* 1 byte  */
+#define URTW_MSR_LINK_MASK		((1 << 2) | (1 << 3))
+#define URTW_MSR_LINK_SHIFT		(2)
+#define URTW_MSR_LINK_NONE		(0 << URTW_MSR_LINK_SHIFT)
+#define URTW_MSR_LINK_ADHOC		(1 << URTW_MSR_LINK_SHIFT)
+#define URTW_MSR_LINK_STA		(2 << URTW_MSR_LINK_SHIFT)
+#define URTW_MSR_LINK_HOSTAP		(3 << URTW_MSR_LINK_SHIFT)
+#define URTW_CONFIG3			0x0059		/* 1 byte  */
+#define URTW_CONFIG3_ANAPARAM_WRITE	(0x40)
+#define URTW_CONFIG3_ANAPARAM_W_SHIFT	(6)
+#define	URTW_ADDR_MAGIC4		0x005b		/* 1 byte  */
+#define URTW_PSR			0x005e		/* 1 byte  */
+#define URTW_ANAPARAM2			0x0060		/* 4 byte  */
+#define URTW_8225_ANAPARAM2_ON		(0x860c7312)
+#define	URTW_BEACON_INTERVAL		0x0070		/* 2 byte  */
+#define	URTW_ATIM_WND			0x0072		/* 2 byte  */
+#define	URTW_BEACON_INTERVAL_TIME	0x0074		/* 2 byte  */
+#define	URTW_ATIM_TR_ITV		0x0076		/* 2 byte  */
+#define	URTW_PHY_MAGIC1			0x007c		/* 1 byte  */
+#define	URTW_PHY_MAGIC2			0x007d		/* 1 byte  */
+#define	URTW_PHY_MAGIC3			0x007e		/* 1 byte  */
+#define	URTW_PHY_MAGIC4			0x007f		/* 1 byte  */
+#define URTW_RF_PINS_OUTPUT		0x0080		/* 2 byte  */
+#define	URTW_RF_PINS_OUTPUT_MAGIC1	(0x3a0)
+#define URTW_BB_HOST_BANG_CLK		(1 << 1)
+#define URTW_BB_HOST_BANG_EN		(1 << 2)
+#define URTW_BB_HOST_BANG_RW		(1 << 3)
+#define URTW_RF_PINS_ENABLE		0x0082		/* 2 byte  */
+#define URTW_RF_PINS_SELECT		0x0084		/* 2 byte  */
+#define	URTW_ADDR_MAGIC1		0x0085		/* broken?  */
+#define URTW_RF_PINS_INPUT		0x0086		/* 2 byte  */
+#define	URTW_RF_PINS_MAGIC1		(0xfff3)
+#define	URTW_RF_PINS_MAGIC2		(0xfff0)
+#define	URTW_RF_PINS_MAGIC3		(0x0007)
+#define	URTW_RF_PINS_MAGIC4		(0xf)
+#define	URTW_RF_PINS_MAGIC5		(0x0080)
+#define URTW_RF_PARA			0x0088		/* 4 byte  */
+#define URTW_RF_TIMING			0x008c		/* 4 byte  */
+#define URTW_GP_ENABLE			0x0090		/* 1 byte  */
+#define	URTW_GP_ENABLE_DATA_MAGIC1	(0x1)
+#define URTW_GPIO			0x0091		/* 1 byte  */
+#define	URTW_GPIO_DATA_MAGIC1		(0x1)
+#define	URTW_ADDR_MAGIC5		0x0094		/* 4 byte  */
+#define URTW_TX_AGC_CTL			0x009c		/* 1 byte  */
+#define URTW_TX_AGC_CTL_PERPACKET_GAIN	(0x1)
+#define URTW_TX_AGC_CTL_PERPACKET_ANTSEL	(0x2)
+#define URTW_TX_AGC_CTL_FEEDBACK_ANT	(0x4)
+#define URTW_TX_GAIN_CCK		0x009d		/* 1 byte  */
+#define URTW_TX_GAIN_OFDM		0x009e		/* 1 byte  */
+#define URTW_TX_ANTENNA			0x009f		/* 1 byte  */
+#define URTW_WPA_CONFIG			0x00b0		/* 1 byte  */
+#define URTW_SIFS			0x00b4		/* 1 byte  */
+#define URTW_DIFS			0x00b5		/* 1 byte  */
+#define URTW_SLOT			0x00b6		/* 1 byte  */
+#define URTW_CW_CONF			0x00bc		/* 1 byte  */
+#define URTW_CW_CONF_PERPACKET_RETRY	(0x2)
+#define URTW_CW_CONF_PERPACKET_CW	(0x1)
+#define URTW_CW_VAL			0x00bd		/* 1 byte  */
+#define URTW_RATE_FALLBACK		0x00be		/* 1 byte  */
+#define URTW_TALLY_SEL			0x00fc		/* 1 byte  */
+#define	URTW_ADDR_MAGIC2		0x00fe		/* 2 byte  */
+#define	URTW_ADDR_MAGIC3		0x00ff		/* 1 byte  */
+
+/* for 8225  */
+#define	URTW_8225_ADDR_0_MAGIC		0x0
+#define	URTW_8225_ADDR_0_DATA_MAGIC1	(0x1b7)
+#define	URTW_8225_ADDR_0_DATA_MAGIC2	(0x0b7)
+#define	URTW_8225_ADDR_0_DATA_MAGIC3	(0x127)
+#define	URTW_8225_ADDR_0_DATA_MAGIC4	(0x027)
+#define	URTW_8225_ADDR_0_DATA_MAGIC5	(0x22f)
+#define	URTW_8225_ADDR_0_DATA_MAGIC6	(0x2bf)
+#define	URTW_8225_ADDR_1_MAGIC		0x1
+#define	URTW_8225_ADDR_2_MAGIC		0x2
+#define	URTW_8225_ADDR_2_DATA_MAGIC1	(0xc4d)
+#define	URTW_8225_ADDR_2_DATA_MAGIC2	(0x44d)
+#define	URTW_8225_ADDR_3_MAGIC		0x3
+#define	URTW_8225_ADDR_3_DATA_MAGIC1	(0x2)
+#define	URTW_8225_ADDR_5_MAGIC		0x5
+#define	URTW_8225_ADDR_5_DATA_MAGIC1	(0x4)
+#define	URTW_8225_ADDR_6_MAGIC		0x6
+#define	URTW_8225_ADDR_6_DATA_MAGIC1	(0xe6)
+#define	URTW_8225_ADDR_6_DATA_MAGIC2	(0x80)
+#define	URTW_8225_ADDR_7_MAGIC		0x7
+#define	URTW_8225_ADDR_8_MAGIC		0x8
+#define	URTW_8225_ADDR_8_DATA_MAGIC1	(0x588)
+#define	URTW_8225_ADDR_9_MAGIC		0x9
+#define	URTW_8225_ADDR_9_DATA_MAGIC1	(0x700)
+#define	URTW_8225_ADDR_C_MAGIC		0xc
+#define	URTW_8225_ADDR_C_DATA_MAGIC1	(0x850)
+#define	URTW_8225_ADDR_C_DATA_MAGIC2	(0x050)
+
+/* for EEPROM  */
+#define URTW_EPROM_TXPW_BASE		0x05
+#define URTW_EPROM_RFCHIPID		0x06
+#define URTW_EPROM_RFCHIPID_RTL8225U	(5)
+#define URTW_EPROM_MACADDR		0x07
+#define URTW_EPROM_TXPW0		0x16 
+#define URTW_EPROM_TXPW2		0x1b
+#define URTW_EPROM_TXPW1		0x3d
+#define URTW_EPROM_SWREV		0x3f
+#define URTW_EPROM_CID_MASK		(0xff)
+#define URTW_EPROM_CID_RSVD0		(0x00)
+#define URTW_EPROM_CID_RSVD1		(0xff)
+#define URTW_EPROM_CID_ALPHA0		(0x01)
+#define URTW_EPROM_CID_SERCOMM_PS	(0x02)
+#define URTW_EPROM_CID_HW_LED		(0x03)
+
+/* LED  */
+#define URTW_CID_DEFAULT		0
+#define	URTW_CID_8187_ALPHA0		1
+#define	URTW_CID_8187_SERCOMM_PS	2
+#define	URTW_CID_8187_HW_LED		3
+#define	URTW_SW_LED_MODE0		0
+#define	URTW_SW_LED_MODE1		1
+#define	URTW_SW_LED_MODE2		2
+#define	URTW_SW_LED_MODE3		3
+#define	URTW_HW_LED			4
+#define	URTW_LED_CTL_POWER_ON		0
+#define	URTW_LED_CTL_LINK		2
+#define	URTW_LED_CTL_TX			4
+#define	URTW_LED_PIN_GPIO0		0
+#define	URTW_LED_PIN_LED0		1
+#define	URTW_LED_PIN_LED1		2
+#define	URTW_LED_UNKNOWN		0
+#define	URTW_LED_ON			1
+#define	URTW_LED_OFF			2
+#define	URTW_LED_BLINK_NORMAL		3
+#define	URTW_LED_BLINK_SLOWLY		4
+#define	URTW_LED_POWER_ON_BLINK		5
+#define	URTW_LED_SCAN_BLINK		6
+#define	URTW_LED_NO_LINK_BLINK		7
+#define	URTW_LED_BLINK_CM3		8
+
+/* for extra area  */
+#define	URTW_EPROM_DISABLE		0
+#define	URTW_EPROM_ENABLE		1
+#define URTW_EPROM_DELAY		10
+#define	URTW_8187_GETREGS_REQ		5
+#define	URTW_8187_SETREGS_REQ		5
+#define URTW_8225_RF_MAX_SENS		6
+#define URTW_8225_RF_DEF_SENS		4
+#define URTW_DEFAULT_RTS_RETRY		7
+#define URTW_DEFAULT_TX_RETRY		7
+#define URTW_DEFAULT_RTS_THRESHOLD	2342U
diff --git a/sys/dev/usb/if_urtwvar.h b/sys/dev/usb/if_urtwvar.h
new file mode 100644
index 0000000..77c09ef
--- /dev/null
+++ b/sys/dev/usb/if_urtwvar.h
@@ -0,0 +1,151 @@
+/*	$FreeBSD$	*/
+
+/*-
+ * Copyright (c) 2008 Weongyo Jeong <weongyo@FreeBSD.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* XXX no definition at net80211?  */
+#define URTW_MAX_CHANNELS		15
+
+struct urtw_data {
+	struct urtw_softc	*sc;
+	usbd_xfer_handle	xfer;
+	uint8_t			*buf;
+	struct mbuf		*m;
+	struct ieee80211_node	*ni;		/* NB: tx only */
+};
+
+/* XXX not correct..  */
+#define	URTW_MIN_RXBUFSZ						\
+	(sizeof(struct ieee80211_frame_min))
+
+#define URTW_RX_DATA_LIST_COUNT		1
+#define URTW_TX_DATA_LIST_COUNT		16
+#define URTW_RX_MAXSIZE			0x9c4
+#define URTW_TX_MAXSIZE			0x9c4
+
+struct urtw_rx_radiotap_header {
+	struct ieee80211_radiotap_header wr_ihdr;
+	uint8_t		wr_flags;
+	uint16_t	wr_chan_freq;
+	uint16_t	wr_chan_flags;
+	int8_t		wr_dbm_antsignal;
+} __packed;
+
+#define URTW_RX_RADIOTAP_PRESENT					\
+	((1 << IEEE80211_RADIOTAP_FLAGS) |				\
+	 (1 << IEEE80211_RADIOTAP_CHANNEL) |				\
+	 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL))
+
+struct urtw_tx_radiotap_header {
+	struct ieee80211_radiotap_header wt_ihdr;
+	uint8_t		wt_flags;
+	uint16_t	wt_chan_freq;
+	uint16_t	wt_chan_flags;
+} __packed;
+
+#define URTW_TX_RADIOTAP_PRESENT					\
+	((1 << IEEE80211_RADIOTAP_FLAGS) |				\
+	 (1 << IEEE80211_RADIOTAP_CHANNEL))
+
+struct urtw_vap {
+	struct ieee80211vap		vap;
+	int				(*newstate)(struct ieee80211vap *,
+					    enum ieee80211_state, int);
+};
+#define	URTW_VAP(vap)	((struct urtw_vap *)(vap))
+
+struct urtw_softc {
+	struct ifnet			*sc_ifp;
+	device_t			sc_dev;
+	usbd_device_handle		sc_udev;
+	usbd_interface_handle		sc_iface;
+	struct mtx			sc_mtx;
+
+	int				sc_debug;
+	int				sc_if_flags;
+	int				sc_flags;
+#define	URTW_INIT_ONCE			(1 << 1)
+	struct usb_task			sc_task;
+	struct usb_task			sc_ctxtask;
+	int				sc_ctxarg;
+#define	URTW_SET_CHANNEL		1
+	enum ieee80211_state		sc_state;
+	int				sc_arg;
+	int				(*sc_newstate)(struct ieee80211com *,
+					    enum ieee80211_state, int);
+
+	int				sc_epromtype;
+#define URTW_EEPROM_93C46		0
+#define URTW_EEPROM_93C56		1
+	uint8_t				sc_crcmon;
+	uint8_t				sc_bssid[IEEE80211_ADDR_LEN];
+
+	/* for RF  */
+	usbd_status			(*sc_rf_init)(struct urtw_softc *);
+	usbd_status			(*sc_rf_set_chan)(struct urtw_softc *,
+					    int);
+	usbd_status			(*sc_rf_set_sens)(struct urtw_softc *,
+					    int);
+	uint8_t				sc_rfchip;
+	uint32_t			sc_max_sens;
+	uint32_t			sc_sens;
+	/* for LED  */
+	struct callout			sc_led_ch;
+	struct usb_task			sc_ledtask;
+	uint8_t				sc_psr;
+	uint8_t				sc_strategy;
+#define	URTW_LED_GPIO			1
+	uint8_t				sc_gpio_ledon;
+	uint8_t				sc_gpio_ledinprogress;
+	uint8_t				sc_gpio_ledstate;
+	uint8_t				sc_gpio_ledpin;
+	uint8_t				sc_gpio_blinktime;
+	uint8_t				sc_gpio_blinkstate;
+	/* RX/TX  */
+	usbd_pipe_handle		sc_rxpipe;
+	usbd_pipe_handle		sc_txpipe_low;
+	usbd_pipe_handle		sc_txpipe_normal;
+#define	URTW_PRIORITY_LOW		0
+#define	URTW_PRIORITY_NORMAL		1
+#define URTW_DATA_TIMEOUT		10000		/* 10 sec  */
+	struct urtw_data		sc_rxdata[URTW_RX_DATA_LIST_COUNT];
+	struct urtw_data		sc_txdata[URTW_TX_DATA_LIST_COUNT];
+	uint32_t			sc_tx_low_queued;
+	uint32_t			sc_tx_normal_queued;
+	uint32_t			sc_txidx;
+	uint8_t				sc_rts_retry;
+	uint8_t				sc_tx_retry;
+	uint8_t				sc_preamble_mode;
+#define	URTW_PREAMBLE_MODE_SHORT	1
+#define	URTW_PREAMBLE_MODE_LONG		2
+	struct callout			sc_watchdog_ch;
+	int				sc_txtimer;
+	int				sc_currate;
+	/* TX power  */
+	uint8_t				sc_txpwr_cck[URTW_MAX_CHANNELS];
+	uint8_t				sc_txpwr_cck_base;
+	uint8_t				sc_txpwr_ofdm[URTW_MAX_CHANNELS];
+	uint8_t				sc_txpwr_ofdm_base;
+
+	struct	urtw_rx_radiotap_header	sc_rxtap;
+	int				sc_rxtap_len;
+	struct	urtw_tx_radiotap_header	sc_txtap;
+	int				sc_txtap_len;
+};
+
+#define URTW_LOCK(sc)			mtx_lock(&(sc)->sc_mtx)
+#define URTW_UNLOCK(sc)			mtx_unlock(&(sc)->sc_mtx)
+#define URTW_ASSERT_LOCKED(sc)		mtx_assert(&(sc)->sc_mtx, MA_OWNED)
diff --git a/sys/dev/usb/usbdevs b/sys/dev/usb/usbdevs
index ec42da6..97de812 100644
--- a/sys/dev/usb/usbdevs
+++ b/sys/dev/usb/usbdevs
@@ -1830,6 +1830,7 @@ product NETGEAR FA120		0x1040	USB 2.0 Ethernet
 product NETGEAR WG111V2_2	0x4240	PrismGT USB 2.0 WLAN
 product NETGEAR WG111U		0x4300	WG111U
 product NETGEAR WG111U_NF	0x4301	WG111U (no firmware)
+product NETGEAR WG111V2		0x6a00	WG111V2
 product NETGEAR2 MA101		0x4100	MA101
 product NETGEAR2 MA101B		0x4102	MA101 Rev B
 product NETGEAR3 WG111T		0x4250	WG111T
@@ -2044,6 +2045,7 @@ product RALINK RT2573_2		0x9021	RT2501USB Wireless Adapter
 /* ReakTek products */
 /* Green House and CompUSA OEM this part */
 product REALTEK USBKR100	0x8150	USBKR100 USB Ethernet
+product REALTEK RTL8187		0x8187	RTL8187 Wireless Adapter
 
 /* Ricoh products */
 product RICOH VGPVCC2		0x1830	VGP-VCC2 Camera
diff --git a/sys/modules/urtw/Makefile b/sys/modules/urtw/Makefile
new file mode 100644
index 0000000..3857e4a
--- /dev/null
+++ b/sys/modules/urtw/Makefile
@@ -0,0 +1,9 @@
+# $FreeBSD$
+
+.PATH: ${.CURDIR}/../../dev/usb
+
+KMOD    = if_urtw
+SRCS    = if_urtw.c if_urtwvar.h if_urtwreg.h opt_usb.h device_if.h	\
+	  bus_if.h usbdevs.h
+
+.include <bsd.kmod.mk>