Initial import of ipw, iwi, ral and ural drivers:

ipw  - Intel PRO/Wireless 2100
iwi  - Intel PRO/Wireless 2200BG/2225BG/2915ABG
ral  - Ralink Technology RT2500
ural - Ralink Technology RT2500USB

Approved by:	silby (mentor)

7 files changed, 3868 insertions, 0 deletions

diff --git a/sys/dev/ral/if_ral.c b/sys/dev/ral/if_ral.c
new file mode 100644
index 0000000..c17d86a
--- /dev/null
+++ b/sys/dev/ral/if_ral.c
@@ -0,0 +1,2781 @@
+/*	$FreeBSD$	*/
+
+/*-
+ * Copyright (c) 2005
+ *	Damien Bergamini <damien.bergamini@free.fr>
+ *
+ * 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("$FreeBSD$");
+
+/*-
+ * Ralink Technology RT2500 chipset driver
+ * http://www.ralinktech.com/
+ */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/sockio.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 <machine/bus.h>
+#include <machine/resource.h>
+#include <machine/clock.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>
+
+#include <net80211/ieee80211_var.h>
+#include <net80211/ieee80211_radiotap.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/in_var.h>
+#include <netinet/ip.h>
+#include <netinet/if_ether.h>
+
+#include <dev/ral/if_ralrate.h>
+#include <dev/ral/if_ralreg.h>
+#include <dev/ral/if_ralvar.h>
+
+#ifdef RAL_DEBUG
+#define DPRINTF(x)	do { if (ral_debug > 0) printf x; } while (0)
+#define DPRINTFN(n, x)	do { if (ral_debug >= (n)) printf x; } while (0)
+int ral_debug = 0;
+SYSCTL_INT(_debug, OID_AUTO, ral, CTLFLAG_RW, &ral_debug, 0, "ral debug level");
+#else
+#define DPRINTF(x)
+#define DPRINTFN(n, x)
+#endif
+
+MODULE_DEPEND(ral, wlan, 1, 1, 1);
+
+static void		ral_dma_map_addr(void *, bus_dma_segment_t *, int, int);
+static int		ral_alloc_tx_ring(struct ral_softc *,
+			    struct ral_tx_ring *, int);
+static void		ral_reset_tx_ring(struct ral_softc *,
+			    struct ral_tx_ring *);
+static void		ral_free_tx_ring(struct ral_softc *,
+			    struct ral_tx_ring *);
+static int		ral_alloc_rx_ring(struct ral_softc *,
+			    struct ral_rx_ring *, int);
+static void		ral_reset_rx_ring(struct ral_softc *,
+			    struct ral_rx_ring *);
+static void		ral_free_rx_ring(struct ral_softc *,
+			    struct ral_rx_ring *);
+static struct		ieee80211_node *ral_node_alloc(
+			    struct ieee80211_node_table *);
+static int		ral_media_change(struct ifnet *);
+static void		ral_next_scan(void *);
+static void		ral_iter_func(void *, struct ieee80211_node *);
+static void		ral_update_rssadapt(void *);
+static int		ral_newstate(struct ieee80211com *,
+			    enum ieee80211_state, int);
+static uint16_t		ral_eeprom_read(struct ral_softc *, uint8_t);
+static void		ral_encryption_intr(struct ral_softc *);
+static void		ral_tx_intr(struct ral_softc *);
+static void		ral_prio_intr(struct ral_softc *);
+static void		ral_decryption_intr(struct ral_softc *);
+static void		ral_rx_intr(struct ral_softc *);
+static void		ral_beacon_expire(struct ral_softc *);
+static void		ral_wakeup_expire(struct ral_softc *);
+static void		ral_intr(void *);
+static int		ral_ack_rate(int);
+static uint16_t		ral_txtime(int, int, uint32_t);
+static uint8_t		ral_plcp_signal(int);
+static void		ral_setup_tx_desc(struct ral_softc *,
+			    struct ral_tx_desc *, uint32_t, int, int, int,
+			    bus_addr_t);
+static int		ral_tx_bcn(struct ral_softc *, struct mbuf *,
+			    struct ieee80211_node *);
+static int		ral_tx_mgt(struct ral_softc *, struct mbuf *,
+			    struct ieee80211_node *);
+static struct		mbuf *ral_get_rts(struct ral_softc *,
+			    struct ieee80211_frame *, uint16_t);
+static int		ral_tx_data(struct ral_softc *, struct mbuf *,
+			    struct ieee80211_node *);
+static void		ral_start(struct ifnet *);
+static void		ral_watchdog(struct ifnet *);
+static int		ral_reset(struct ifnet *);
+static int		ral_ioctl(struct ifnet *, u_long, caddr_t);
+static void		ral_bbp_write(struct ral_softc *, uint8_t, uint8_t);
+static uint8_t		ral_bbp_read(struct ral_softc *, uint8_t);
+static void		ral_rf_write(struct ral_softc *, uint8_t, uint32_t);
+static void		ral_set_chan(struct ral_softc *,
+			    struct ieee80211_channel *);
+#if 0
+static void		ral_disable_rf_tune(struct ral_softc *);
+#endif
+static void		ral_enable_tsf_sync(struct ral_softc *);
+static void		ral_update_plcp(struct ral_softc *);
+static void		ral_update_slot(struct ifnet *);
+static void		ral_update_led(struct ral_softc *, int, int);
+static void		ral_set_bssid(struct ral_softc *, uint8_t *);
+static void		ral_set_macaddr(struct ral_softc *, uint8_t *);
+static void		ral_get_macaddr(struct ral_softc *, uint8_t *);
+static void		ral_update_promisc(struct ral_softc *);
+static const char	*ral_get_rf(int);
+static void		ral_read_eeprom(struct ral_softc *);
+static int		ral_bbp_init(struct ral_softc *);
+static void		ral_set_txantenna(struct ral_softc *, int);
+static void		ral_set_rxantenna(struct ral_softc *, int);
+static void		ral_init(void *);
+
+devclass_t ral_devclass;
+
+/*
+ * Supported rates for 802.11a/b/g modes (in 500Kbps unit).
+ */
+static const struct ieee80211_rateset ral_rateset_11a =
+	{ 8, { 12, 18, 24, 36, 48, 72, 96, 108 } };
+
+static const struct ieee80211_rateset ral_rateset_11b =
+	{ 4, { 2, 4, 11, 22 } };
+
+static const struct ieee80211_rateset ral_rateset_11g =
+	{ 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
+
+/*
+ * Default values for MAC registers; values taken from the reference driver.
+ */
+static const struct {
+	uint32_t	reg;
+	uint32_t	val;
+} ral_def_mac[] = {
+	{ RAL_PSCSR0,      0x00020002 },
+	{ RAL_PSCSR1,      0x00000002 },
+	{ RAL_PSCSR2,      0x00020002 },
+	{ RAL_PSCSR3,      0x00000002 },
+	{ RAL_TIMECSR,     0x00003f21 },
+	{ RAL_CSR9,        0x00000780 },
+	{ RAL_CSR11,       0x07041483 },
+	{ RAL_CNT3,        0x00000000 },
+	{ RAL_TXCSR1,      0x07614562 },
+	{ RAL_ARSP_PLCP_0, 0x8c8d8b8a },
+	{ RAL_ACKPCTCSR,   0x7038140a },
+	{ RAL_ARTCSR1,     0x1d21252d },
+	{ RAL_ARTCSR2,     0x1919191d },
+	{ RAL_RXCSR0,      0xffffffff },
+	{ RAL_RXCSR3,      0xb3aab3af },
+	{ RAL_PCICSR,      0x000003b8 },
+	{ RAL_PWRCSR0,     0x3f3b3100 },
+	{ RAL_GPIOCSR,     0x0000ff00 },
+	{ RAL_TESTCSR,     0x000000f0 },
+	{ RAL_PWRCSR1,     0x000001ff },
+	{ RAL_MACCSR0,     0x00213223 },
+	{ RAL_MACCSR1,     0x00235518 },
+	{ RAL_RLPWCSR,     0x00000040 },
+	{ RAL_RALINKCSR,   0x9a009a11 },
+	{ RAL_CSR7,        0xffffffff },
+	{ RAL_BBPCSR1,     0x82188200 },
+	{ RAL_TXACKCSR0,   0x00000020 },
+	{ RAL_SECCSR3,     0x0000e78f }
+};
+
+/*
+ * Default values for BBP registers; values taken from the reference driver.
+ */
+static const struct {
+	uint8_t	reg;
+	uint8_t	val;
+} ral_def_bbp[] = {
+	{  3, 0x02 },
+	{  4, 0x19 },
+	{ 14, 0x1c },
+	{ 15, 0x30 },
+	{ 16, 0xac },
+	{ 17, 0x48 },
+	{ 18, 0x18 },
+	{ 19, 0xff },
+	{ 20, 0x1e },
+	{ 21, 0x08 },
+	{ 22, 0x08 },
+	{ 23, 0x08 },
+	{ 24, 0x80 },
+	{ 25, 0x50 },
+	{ 26, 0x08 },
+	{ 27, 0x23 },
+	{ 30, 0x10 },
+	{ 31, 0x2b },
+	{ 32, 0xb9 },
+	{ 34, 0x12 },
+	{ 35, 0x50 },
+	{ 39, 0xc4 },
+	{ 40, 0x02 },
+	{ 41, 0x60 },
+	{ 53, 0x10 },
+	{ 54, 0x18 },
+	{ 56, 0x08 },
+	{ 57, 0x10 },
+	{ 58, 0x08 },
+	{ 61, 0x60 },
+	{ 62, 0x10 },
+	{ 75, 0xff }
+};
+
+/*
+ * Default values for RF register R2 indexed by channel numbers; values taken
+ * from the reference driver.
+ */
+static const uint32_t ral_rf2522_r2[] = {
+	0x307f6, 0x307fb, 0x30800, 0x30805, 0x3080a, 0x3080f, 0x30814,
+	0x30819, 0x3081e, 0x30823, 0x30828, 0x3082d, 0x30832, 0x3083e
+};
+
+static const uint32_t ral_rf2523_r2[] = {
+	0x00327, 0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d,
+	0x0032e, 0x0032f, 0x00340, 0x00341, 0x00342, 0x00343, 0x00346
+};
+
+static const uint32_t ral_rf2524_r2[] = {
+	0x00327, 0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d,
+	0x0032e, 0x0032f, 0x00340, 0x00341, 0x00342, 0x00343, 0x00346
+};
+
+static const uint32_t ral_rf2525_r2[] = {
+	0x20327, 0x20328, 0x20329, 0x2032a, 0x2032b, 0x2032c, 0x2032d,
+	0x2032e, 0x2032f, 0x20340, 0x20341, 0x20342, 0x20343, 0x20346
+};
+
+static const uint32_t ral_rf2525_hi_r2[] = {
+	0x2032f, 0x20340, 0x20341, 0x20342, 0x20343, 0x20344, 0x20345,
+	0x20346, 0x20347, 0x20348, 0x20349, 0x2034a, 0x2034b, 0x2034e
+};
+
+static const uint32_t ral_rf2525e_r2[] = {
+	0x2044d, 0x2044e, 0x2044f, 0x20460, 0x20461, 0x20462, 0x20463,
+	0x20464, 0x20465, 0x20466, 0x20467, 0x20468, 0x20469, 0x2046b
+};
+
+static const uint32_t ral_rf2526_hi_r2[] = {
+	0x0022a, 0x0022b, 0x0022b, 0x0022c, 0x0022c, 0x0022d, 0x0022d,
+	0x0022e, 0x0022e, 0x0022f, 0x0022d, 0x00240, 0x00240, 0x00241
+};
+
+static const uint32_t ral_rf2526_r2[] = {
+	0x00226, 0x00227, 0x00227, 0x00228, 0x00228, 0x00229, 0x00229,
+	0x0022a, 0x0022a, 0x0022b, 0x0022b, 0x0022c, 0x0022c, 0x0022d
+};
+
+/*
+ * For dual-band RF, RF registers R1 and R4 also depend on channel number;
+ * values taken from the reference driver.
+ */
+static const struct {
+	uint8_t		chan;
+	uint32_t	r1;
+	uint32_t	r2;
+	uint32_t	r4;
+} ral_rf5222[] = {
+	/* channels in the 2.4GHz band */
+	{   1, 0x08808, 0x0044d, 0x00282 },
+	{   2, 0x08808, 0x0044e, 0x00282 },
+	{   3, 0x08808, 0x0044f, 0x00282 },
+	{   4, 0x08808, 0x00460, 0x00282 },
+	{   5, 0x08808, 0x00461, 0x00282 },
+	{   6, 0x08808, 0x00462, 0x00282 },
+	{   7, 0x08808, 0x00463, 0x00282 },
+	{   8, 0x08808, 0x00464, 0x00282 },
+	{   9, 0x08808, 0x00465, 0x00282 },
+	{  10, 0x08808, 0x00466, 0x00282 },
+	{  11, 0x08808, 0x00467, 0x00282 },
+	{  12, 0x08808, 0x00468, 0x00282 },
+	{  13, 0x08808, 0x00469, 0x00282 },
+	{  14, 0x08808, 0x0046b, 0x00286 },
+
+	/* channels in the 5.2GHz band */
+	{  36, 0x08804, 0x06225, 0x00287 },
+	{  40, 0x08804, 0x06226, 0x00287 },
+	{  44, 0x08804, 0x06227, 0x00287 },
+	{  48, 0x08804, 0x06228, 0x00287 },
+	{  52, 0x08804, 0x06229, 0x00287 },
+	{  56, 0x08804, 0x0622a, 0x00287 },
+	{  60, 0x08804, 0x0622b, 0x00287 },
+	{  64, 0x08804, 0x0622c, 0x00287 },
+
+	{ 100, 0x08804, 0x02200, 0x00283 },
+	{ 104, 0x08804, 0x02201, 0x00283 },
+	{ 108, 0x08804, 0x02202, 0x00283 },
+	{ 112, 0x08804, 0x02203, 0x00283 },
+	{ 116, 0x08804, 0x02204, 0x00283 },
+	{ 120, 0x08804, 0x02205, 0x00283 },
+	{ 124, 0x08804, 0x02206, 0x00283 },
+	{ 128, 0x08804, 0x02207, 0x00283 },
+	{ 132, 0x08804, 0x02208, 0x00283 },
+	{ 136, 0x08804, 0x02209, 0x00283 },
+	{ 140, 0x08804, 0x0220a, 0x00283 },
+
+	{ 149, 0x08808, 0x02429, 0x00281 },
+	{ 153, 0x08808, 0x0242b, 0x00281 },
+	{ 157, 0x08808, 0x0242d, 0x00281 },
+	{ 161, 0x08808, 0x0242f, 0x00281 }
+};
+
+int
+ral_attach(device_t dev)
+{
+	struct ral_softc *sc = device_get_softc(dev);
+	struct ifnet *ifp = &sc->sc_arp.ac_if;
+	struct ieee80211com *ic = &sc->sc_ic;
+	int error, i;
+
+	sc->sc_dev = dev;
+
+	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
+	    MTX_DEF | MTX_RECURSE);
+
+	callout_init(&sc->scan_ch, debug_mpsafenet ? CALLOUT_MPSAFE : 0);
+	callout_init(&sc->rssadapt_ch, CALLOUT_MPSAFE);
+
+	/* retrieve RT2560 rev. no */
+	sc->asic_rev = RAL_READ(sc, RAL_CSR0);
+
+	/* retrieve MAC address */
+	ral_get_macaddr(sc, ic->ic_myaddr);
+
+	/* retrieve RF rev. no and various other things from EEPROM */
+	ral_read_eeprom(sc);
+
+	device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n",
+	    sc->asic_rev, ral_get_rf(sc->rf_rev));
+
+	/*
+	 * Allocate Tx and Rx rings.
+	 */
+	if (ral_alloc_tx_ring(sc, &sc->txq, RAL_TX_RING_COUNT) != 0) {
+		device_printf(sc->sc_dev, "could not allocate Tx ring\n");
+		goto fail1;
+	}
+
+	if (ral_alloc_tx_ring(sc, &sc->atimq, RAL_ATIM_RING_COUNT) != 0) {
+		device_printf(sc->sc_dev, "could not allocate ATIM ring\n");
+		goto fail2;
+	}
+
+	if (ral_alloc_tx_ring(sc, &sc->prioq, RAL_PRIO_RING_COUNT) != 0) {
+		device_printf(sc->sc_dev, "could not allocate Prio ring\n");
+		goto fail3;
+	}
+
+	if (ral_alloc_tx_ring(sc, &sc->bcnq, RAL_BEACON_RING_COUNT) != 0) {
+		device_printf(sc->sc_dev, "could not allocate Beacon ring\n");
+		goto fail4;
+	}
+
+	if (ral_alloc_rx_ring(sc, &sc->rxq, RAL_RX_RING_COUNT) != 0) {
+		device_printf(sc->sc_dev, "could not allocate Rx ring\n");
+		goto fail5;
+	}
+
+	ifp->if_softc = sc;
+	if_initname(ifp, device_get_name(dev), device_get_unit(dev));
+	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+	ifp->if_init = ral_init;
+	ifp->if_ioctl = ral_ioctl;
+	ifp->if_start = ral_start;
+	ifp->if_watchdog = ral_watchdog;
+	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
+	ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
+	IFQ_SET_READY(&ifp->if_snd);
+
+	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 */
+	ic->ic_state = IEEE80211_S_INIT;
+
+	/* set device capabilities */
+	ic->ic_caps = IEEE80211_C_MONITOR | IEEE80211_C_IBSS |
+	    IEEE80211_C_HOSTAP | IEEE80211_C_SHPREAMBLE | IEEE80211_C_SHSLOT |
+	    IEEE80211_C_PMGT | IEEE80211_C_TXPMGT | IEEE80211_C_WPA;
+
+	if (sc->rf_rev == RAL_RF_5222) {
+		/* set supported .11a rates */
+		ic->ic_sup_rates[IEEE80211_MODE_11A] = ral_rateset_11a;
+
+		/* set supported .11a channels */
+		for (i = 36; i <= 64; i += 4) {
+			ic->ic_channels[i].ic_freq =
+			    ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
+			ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
+		}
+		for (i = 100; i <= 140; i += 4) {
+			ic->ic_channels[i].ic_freq =
+			    ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
+			ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
+		}
+		for (i = 149; i <= 161; i += 4) {
+			ic->ic_channels[i].ic_freq =
+			    ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ);
+			ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A;
+		}
+	}
+
+	/* set supported .11b and .11g rates */
+	ic->ic_sup_rates[IEEE80211_MODE_11B] = ral_rateset_11b;
+	ic->ic_sup_rates[IEEE80211_MODE_11G] = ral_rateset_11g;
+
+	/* set supported .11b and .11g channels (1 through 14) */
+	for (i = 1; i <= 14; i++) {
+		ic->ic_channels[i].ic_freq =
+		    ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
+		ic->ic_channels[i].ic_flags =
+		    IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM |
+		    IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
+	}
+
+	ieee80211_ifattach(ic);
+	ic->ic_node_alloc = ral_node_alloc;
+	ic->ic_updateslot = ral_update_slot;
+	ic->ic_reset = ral_reset;
+
+	/* override state transition machine */
+	sc->sc_newstate = ic->ic_newstate;
+	ic->ic_newstate = ral_newstate;
+	ieee80211_media_init(ic, ral_media_change, ieee80211_media_status);
+
+	bpfattach2(ifp, DLT_IEEE802_11_RADIO,
+	    sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf);
+
+	sc->sc_rxtap_len = sizeof sc->sc_rxtapu;
+	sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len);
+	sc->sc_rxtap.wr_ihdr.it_present = htole32(RAL_RX_RADIOTAP_PRESENT);
+
+	sc->sc_txtap_len = sizeof sc->sc_txtapu;
+	sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len);
+	sc->sc_txtap.wt_ihdr.it_present = htole32(RAL_TX_RADIOTAP_PRESENT);
+
+	/*
+	 * Add a few sysctl knobs.
+	 */
+	sc->dwelltime = 200;
+
+	SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
+	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
+	    "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)");
+
+	SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
+	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
+	    "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)");
+
+	SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
+	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "dwell",
+	    CTLFLAG_RW, &sc->dwelltime, 0,
+	    "channel dwell time (ms) for AP/station scanning");
+
+	/*
+	 * Hook our interrupt after all initialization is complete.
+	 */
+	error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
+	    ral_intr, sc, &sc->sc_ih);
+	if (error != 0) {
+		device_printf(dev, "could not set up interrupt\n");
+		goto fail6;
+	}
+
+	if (bootverbose)
+		ieee80211_announce(ic);
+
+	return 0;
+
+fail6:	bpfdetach(ifp);
+	ieee80211_ifdetach(ic);
+
+	ral_free_rx_ring(sc, &sc->rxq);
+fail5:	ral_free_tx_ring(sc, &sc->bcnq);
+fail4:	ral_free_tx_ring(sc, &sc->prioq);
+fail3:	ral_free_tx_ring(sc, &sc->atimq);
+fail2:	ral_free_tx_ring(sc, &sc->txq);
+fail1:	mtx_destroy(&sc->sc_mtx);
+
+	return ENXIO;
+}
+
+int
+ral_detach(device_t dev)
+{
+	struct ral_softc *sc = device_get_softc(dev);
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ifnet *ifp = ic->ic_ifp;
+
+	callout_stop(&sc->scan_ch);
+	callout_stop(&sc->rssadapt_ch);
+
+	bpfdetach(ifp);
+	ieee80211_ifdetach(ic);
+
+	ral_free_tx_ring(sc, &sc->txq);
+	ral_free_tx_ring(sc, &sc->atimq);
+	ral_free_tx_ring(sc, &sc->prioq);
+	ral_free_tx_ring(sc, &sc->bcnq);
+	ral_free_rx_ring(sc, &sc->rxq);
+
+	bus_teardown_intr(dev, sc->irq, sc->sc_ih);
+	ral_free(dev);
+
+	mtx_destroy(&sc->sc_mtx);
+
+	return 0;
+}
+
+void
+ral_shutdown(device_t dev)
+{
+	struct ral_softc *sc = device_get_softc(dev);
+
+	ral_stop(sc);
+}
+
+int
+ral_alloc(device_t dev, int rid)
+{
+	struct ral_softc *sc = device_get_softc(dev);
+
+	sc->mem_rid = rid;
+	sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
+	    RF_ACTIVE);
+	if (sc->mem == NULL) {
+		device_printf(dev, "could not allocate memory resource\n");
+		return ENXIO;
+	}
+
+	sc->sc_st = rman_get_bustag(sc->mem);
+	sc->sc_sh = rman_get_bushandle(sc->mem);
+
+	sc->irq_rid = 0;
+	sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
+	    RF_ACTIVE | RF_SHAREABLE);
+	if (sc->irq == NULL) {
+		device_printf(dev, "could not allocate interrupt resource\n");
+		ral_free(dev);
+		return ENXIO;
+	}
+
+	return 0;
+}
+
+void
+ral_free(device_t dev)
+{
+	struct ral_softc *sc = device_get_softc(dev);
+
+	if (sc->irq != NULL) {
+		bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
+		sc->irq = NULL;
+	}
+
+	if (sc->mem != NULL) {
+		bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
+		sc->mem = NULL;
+	}
+}
+
+static void
+ral_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+	if (error != 0)
+		return;
+
+	KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
+
+	*(bus_addr_t *)arg = segs[0].ds_addr;
+}
+
+static int
+ral_alloc_tx_ring(struct ral_softc *sc, struct ral_tx_ring *ring, int count)
+{
+	int i, error;
+
+	ring->count = count;
+	ring->queued = 0;
+	ring->cur = ring->next = 0;
+	ring->cur_encrypt = ring->next_encrypt = 0;
+
+	error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
+	    BUS_SPACE_MAXADDR, NULL, NULL, count * RAL_TX_DESC_SIZE, 1,
+	    count * RAL_TX_DESC_SIZE, 0, NULL, NULL, &ring->desc_dmat);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not create desc DMA tag\n");
+		goto fail;
+	}
+
+	error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
+	    BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not allocate DMA memory\n");
+		goto fail;
+	}
+
+	error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
+	    count * RAL_TX_DESC_SIZE, ral_dma_map_addr, &ring->physaddr, 0);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not load desc DMA map\n");
+		goto fail;
+	}
+
+	ring->data = malloc(count * sizeof (struct ral_tx_data), M_DEVBUF,
+	    M_NOWAIT | M_ZERO);
+	if (ring->data == NULL) {
+		device_printf(sc->sc_dev, "could not allocate soft data\n");
+		error = ENOMEM;
+		goto fail;
+	}
+
+	error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
+	    BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, RAL_MAX_SCATTER, MCLBYTES,
+	    0, NULL, NULL, &ring->data_dmat);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not create data DMA tag\n");
+		goto fail;
+	}
+
+	for (i = 0; i < count; i++) {
+		error = bus_dmamap_create(ring->data_dmat, 0,
+		    &ring->data[i].map);
+		if (error != 0) {
+			device_printf(sc->sc_dev, "could not create DMA map\n");
+			goto fail;
+		}
+	}
+
+	return 0;
+
+fail:	ral_free_tx_ring(sc, ring);
+	return error;
+}
+
+static void
+ral_reset_tx_ring(struct ral_softc *sc, struct ral_tx_ring *ring)
+{
+	struct ral_tx_desc *desc;
+	struct ral_tx_data *data;
+	int i;
+
+	for (i = 0; i < ring->count; i++) {
+		desc = &ring->desc[i];
+		data = &ring->data[i];
+
+		if (data->m != NULL) {
+			bus_dmamap_sync(ring->data_dmat, data->map,
+			    BUS_DMASYNC_POSTWRITE);
+			bus_dmamap_unload(ring->data_dmat, data->map);
+			m_freem(data->m);
+			data->m = NULL;
+		}
+
+		if (data->ni != NULL) {
+			ieee80211_free_node(data->ni);
+			data->ni = NULL;
+		}
+
+		desc->flags = 0;
+	}
+
+	bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
+
+	ring->queued = 0;
+	ring->cur = ring->next = 0;
+	ring->cur_encrypt = ring->next_encrypt = 0;
+}
+
+static void
+ral_free_tx_ring(struct ral_softc *sc, struct ral_tx_ring *ring)
+{
+	struct ral_tx_data *data;
+	int i;
+
+	if (ring->desc != NULL) {
+		bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
+		    BUS_DMASYNC_POSTWRITE);
+		bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
+		bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
+	}
+
+	if (ring->desc_dmat != NULL)
+		bus_dma_tag_destroy(ring->desc_dmat);
+
+	if (ring->data != NULL) {
+		for (i = 0; i < ring->count; i++) {
+			data = &ring->data[i];
+
+			if (data->m != NULL) {
+				bus_dmamap_sync(ring->data_dmat, data->map,
+				    BUS_DMASYNC_POSTWRITE);
+				bus_dmamap_unload(ring->data_dmat, data->map);
+				m_freem(data->m);
+			}
+
+			if (data->ni != NULL)
+				ieee80211_free_node(data->ni);
+
+			if (data->map != NULL)
+				bus_dmamap_destroy(ring->data_dmat, data->map);
+		}
+
+		free(ring->data, M_DEVBUF);
+	}
+
+	if (ring->data_dmat != NULL)
+		bus_dma_tag_destroy(ring->data_dmat);
+}
+
+static int
+ral_alloc_rx_ring(struct ral_softc *sc, struct ral_rx_ring *ring, int count)
+{
+	struct ral_rx_desc *desc;
+	struct ral_rx_data *data;
+	bus_addr_t physaddr;
+	int i, error;
+
+	ring->count = count;
+	ring->cur = ring->next = 0;
+	ring->cur_decrypt = 0;
+
+	error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
+	    BUS_SPACE_MAXADDR, NULL, NULL, count * RAL_RX_DESC_SIZE, 1,
+	    count * RAL_RX_DESC_SIZE, 0, NULL, NULL, &ring->desc_dmat);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not create desc DMA tag\n");
+		goto fail;
+	}
+
+	error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
+	    BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not allocate DMA memory\n");
+		goto fail;
+	}
+
+	error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
+	    count * RAL_RX_DESC_SIZE, ral_dma_map_addr, &ring->physaddr, 0);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not load desc DMA map\n");
+		goto fail;
+	}
+
+	ring->data = malloc(count * sizeof (struct ral_rx_data), M_DEVBUF,
+	    M_NOWAIT | M_ZERO);
+	if (ring->data == NULL) {
+		device_printf(sc->sc_dev, "could not allocate soft data\n");
+		error = ENOMEM;
+		goto fail;
+	}
+
+	/*
+	 * Pre-allocate Rx buffers and populate Rx ring.
+	 */
+	error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
+	    BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
+	    NULL, &ring->data_dmat);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not create data DMA tag\n");
+		goto fail;
+	}
+
+	for (i = 0; i < count; i++) {
+		desc = &sc->rxq.desc[i];
+		data = &sc->rxq.data[i];
+
+		error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
+		if (error != 0) {
+			device_printf(sc->sc_dev, "could not create DMA map\n");
+			goto fail;
+		}
+
+		data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
+		if (data->m == NULL) {
+			device_printf(sc->sc_dev,
+			    "could not allocate rx mbuf\n");
+			error = ENOMEM;
+			goto fail;
+		}
+
+		error = bus_dmamap_load(ring->data_dmat, data->map,
+		    mtod(data->m, void *), MCLBYTES, ral_dma_map_addr,
+		    &physaddr, 0);
+		if (error != 0) {
+			device_printf(sc->sc_dev,
+			    "could not load rx buf DMA map");
+			goto fail;
+		}
+
+		desc->flags = htole32(RAL_RX_BUSY);
+		desc->physaddr = htole32(physaddr);
+	}
+
+	bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
+
+	return 0;
+
+fail:	ral_free_rx_ring(sc, ring);
+	return error;
+}
+
+static void
+ral_reset_rx_ring(struct ral_softc *sc, struct ral_rx_ring *ring)
+{
+	int i;
+
+	for (i = 0; i < ring->count; i++) {
+		ring->desc[i].flags = htole32(RAL_RX_BUSY);
+		ring->data[i].drop = 0;
+	}
+
+	bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE);
+
+	ring->cur = ring->next = 0;
+	ring->cur_decrypt = 0;
+}
+
+static void
+ral_free_rx_ring(struct ral_softc *sc, struct ral_rx_ring *ring)
+{
+	struct ral_rx_data *data;
+	int i;
+
+	if (ring->desc != NULL) {
+		bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
+		    BUS_DMASYNC_POSTWRITE);
+		bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
+		bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
+	}
+
+	if (ring->desc_dmat != NULL)
+		bus_dma_tag_destroy(ring->desc_dmat);
+
+	if (ring->data != NULL) {
+		for (i = 0; i < ring->count; i++) {
+			data = &ring->data[i];
+
+			if (data->m != NULL) {
+				bus_dmamap_sync(ring->data_dmat, data->map,
+				    BUS_DMASYNC_POSTREAD);
+				bus_dmamap_unload(ring->data_dmat, data->map);
+				m_freem(data->m);
+			}
+
+			if (data->map != NULL)
+				bus_dmamap_destroy(ring->data_dmat, data->map);
+		}
+
+		free(ring->data, M_DEVBUF);
+	}
+
+	if (ring->data_dmat != NULL)
+		bus_dma_tag_destroy(ring->data_dmat);
+}
+
+static struct ieee80211_node *
+ral_node_alloc(struct ieee80211_node_table *nt)
+{
+	struct ral_node *rn;
+
+	rn = malloc(sizeof (struct ral_node), M_80211_NODE, M_NOWAIT | M_ZERO);
+
+	return (rn != NULL) ? &rn->ni : NULL;
+}
+
+static int
+ral_media_change(struct ifnet *ifp)
+{
+	int error;
+
+	error = ieee80211_media_change(ifp);
+	if (error != ENETRESET)
+		return error;
+
+	if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
+		ral_init(ifp);
+
+	return 0;
+}
+
+/*
+ * This function is called periodically (every 200ms) during scanning to
+ * switch from one channel to another.
+ */
+static void
+ral_next_scan(void *arg)
+{
+	struct ral_softc *sc = arg;
+	struct ieee80211com *ic = &sc->sc_ic;
+
+	if (ic->ic_state == IEEE80211_S_SCAN)
+		ieee80211_next_scan(ic);
+}
+
+/*
+ * This function is called for each node present in the node station table.
+ */
+static void
+ral_iter_func(void *arg, struct ieee80211_node *ni)
+{
+	struct ral_node *rn = (struct ral_node *)ni;
+
+	ral_rssadapt_updatestats(&rn->rssadapt);
+}
+
+/*
+ * This function is called periodically (every 100ms) in RUN state to update
+ * the rate adaptation statistics.
+ */
+static void
+ral_update_rssadapt(void *arg)
+{
+	struct ral_softc *sc = arg;
+	struct ieee80211com *ic = &sc->sc_ic;
+
+	RAL_LOCK(sc);
+
+	ieee80211_iterate_nodes(&ic->ic_sta, ral_iter_func, arg);
+	callout_reset(&sc->rssadapt_ch, hz / 10, ral_update_rssadapt, sc);
+
+	RAL_UNLOCK(sc);
+}
+
+static int
+ral_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
+{
+	struct ral_softc *sc = ic->ic_ifp->if_softc;
+	struct mbuf *m;
+	enum ieee80211_state ostate;
+	int error = 0;
+
+	ostate = ic->ic_state;
+	callout_stop(&sc->scan_ch);
+
+	switch (nstate) {
+	case IEEE80211_S_INIT:
+		callout_stop(&sc->rssadapt_ch);
+
+		if (ostate == IEEE80211_S_RUN) {
+			/* abort TSF synchronization */
+			RAL_WRITE(sc, RAL_CSR14, 0);
+
+			/* turn association led off */
+			ral_update_led(sc, 0, 0);
+		}
+		break;
+
+	case IEEE80211_S_SCAN:
+		ral_set_chan(sc, ic->ic_bss->ni_chan);
+		callout_reset(&sc->scan_ch, (sc->dwelltime * hz) / 1000,
+		    ral_next_scan, sc);
+		break;
+
+	case IEEE80211_S_AUTH:
+		ral_set_chan(sc, ic->ic_bss->ni_chan);
+		break;
+
+	case IEEE80211_S_ASSOC:
+		ral_set_chan(sc, ic->ic_bss->ni_chan);
+		break;
+
+	case IEEE80211_S_RUN:
+		ral_set_chan(sc, ic->ic_bss->ni_chan);
+
+		if (ic->ic_opmode != IEEE80211_M_MONITOR)
+			ral_set_bssid(sc, ic->ic_bss->ni_bssid);
+
+		if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
+		    ic->ic_opmode == IEEE80211_M_IBSS) {
+			m = ieee80211_beacon_alloc(ic, ic->ic_bss, &sc->sc_bo);
+			if (m == NULL) {
+				device_printf(sc->sc_dev,
+				    "could not allocate beacon\n");
+				error = ENOBUFS;
+				break;
+			}
+
+			ieee80211_ref_node(ic->ic_bss);
+			error = ral_tx_bcn(sc, m, ic->ic_bss);
+			if (error != 0)
+				break;
+		}
+
+		/* turn assocation led on */
+		ral_update_led(sc, 1, 0);
+
+		if (ic->ic_opmode != IEEE80211_M_MONITOR) {
+			callout_reset(&sc->rssadapt_ch, hz / 10,
+			    ral_update_rssadapt, sc);
+
+			ral_enable_tsf_sync(sc);
+		}
+		break;
+	}
+
+	return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg);
+}
+
+/*
+ * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or
+ * 93C66).
+ */
+static uint16_t
+ral_eeprom_read(struct ral_softc *sc, uint8_t addr)
+{
+	uint32_t tmp;
+	uint16_t val;
+	int n;
+
+	/* clock C once before the first command */
+	RAL_EEPROM_CTL(sc, 0);
+
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S);
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S | RAL_EEPROM_C);
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S);
+
+	/* write start bit (1) */
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S | RAL_EEPROM_D);
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S | RAL_EEPROM_D | RAL_EEPROM_C);
+
+	/* write READ opcode (10) */
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S | RAL_EEPROM_D);
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S | RAL_EEPROM_D | RAL_EEPROM_C);
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S);
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S | RAL_EEPROM_C);
+
+	/* write address (A5-A0 or A7-A0) */
+	n = (RAL_READ(sc, RAL_CSR21) & RAL_EEPROM_93C46) ? 5 : 7;
+	for (; n >= 0; n--) {
+		RAL_EEPROM_CTL(sc, RAL_EEPROM_S |
+		    (((addr >> n) & 1) << RAL_EEPROM_SHIFT_D));
+		RAL_EEPROM_CTL(sc, RAL_EEPROM_S |
+		    (((addr >> n) & 1) << RAL_EEPROM_SHIFT_D) | RAL_EEPROM_C);
+	}
+
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S);
+
+	/* read data Q15-Q0 */
+	val = 0;
+	for (n = 15; n >= 0; n--) {
+		RAL_EEPROM_CTL(sc, RAL_EEPROM_S | RAL_EEPROM_C);
+		tmp = RAL_READ(sc, RAL_CSR21);
+		val |= ((tmp & RAL_EEPROM_Q) >> RAL_EEPROM_SHIFT_Q) << n;
+		RAL_EEPROM_CTL(sc, RAL_EEPROM_S);
+	}
+
+	RAL_EEPROM_CTL(sc, 0);
+
+	/* clear Chip Select and clock C */
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_S);
+	RAL_EEPROM_CTL(sc, 0);
+	RAL_EEPROM_CTL(sc, RAL_EEPROM_C);
+
+	return le16toh(val);
+}
+
+/*
+ * Some frames were processed by the hardware cipher engine and are ready for
+ * transmission.
+ */
+static void
+ral_encryption_intr(struct ral_softc *sc)
+{
+	struct ral_tx_desc *desc;
+	int hw;
+
+	/* retrieve last descriptor index processed by cipher engine */
+	hw = (RAL_READ(sc, RAL_SECCSR1) - sc->txq.physaddr) / RAL_TX_DESC_SIZE;
+
+	bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
+	    BUS_DMASYNC_POSTREAD);
+
+	for (; sc->txq.next_encrypt != hw;) {
+		desc = &sc->txq.desc[sc->txq.next_encrypt];
+
+		if ((le32toh(desc->flags) & RAL_TX_BUSY) ||
+		    (le32toh(desc->flags) & RAL_TX_CIPHER_BUSY))
+			break;
+
+		/* for TKIP, swap eiv field to fix a bug in ASIC */
+		if ((le32toh(desc->flags) & RAL_TX_CIPHER_MASK) ==
+		    RAL_TX_CIPHER_TKIP)
+			desc->eiv = bswap32(desc->eiv);
+
+		/* mark the frame ready for transmission */
+		desc->flags |= htole32(RAL_TX_BUSY | RAL_TX_VALID);
+
+		DPRINTFN(15, ("encryption done idx=%u\n",
+		    sc->txq.next_encrypt));
+
+		sc->txq.next_encrypt =
+		    (sc->txq.next_encrypt + 1) % RAL_TX_RING_COUNT;
+	}
+
+	bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
+	    BUS_DMASYNC_PREWRITE);
+
+	/* kick Tx */
+	RAL_WRITE(sc, RAL_TXCSR0, RAL_KICK_TX);
+}
+
+static void
+ral_tx_intr(struct ral_softc *sc)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ifnet *ifp = ic->ic_ifp;
+	struct ral_tx_desc *desc;
+	struct ral_tx_data *data;
+	struct ral_node *rn;
+
+	bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
+	    BUS_DMASYNC_POSTREAD);
+
+	for (;;) {
+		desc = &sc->txq.desc[sc->txq.next];
+		data = &sc->txq.data[sc->txq.next];
+
+		if ((le32toh(desc->flags) & RAL_TX_BUSY) ||
+		    (le32toh(desc->flags) & RAL_TX_CIPHER_BUSY) ||
+		    !(le32toh(desc->flags) & RAL_TX_VALID))
+			break;
+
+		rn = (struct ral_node *)data->ni;
+
+		switch (le32toh(desc->flags) & RAL_TX_RESULT_MASK) {
+		case RAL_TX_SUCCESS:
+			DPRINTFN(10, ("data frame sent successfully\n"));
+			if (data->id.id_node != NULL) {
+				ral_rssadapt_raise_rate(ic, &rn->rssadapt,
+				    &data->id);
+			}
+			ifp->if_opackets++;
+			break;
+
+		case RAL_TX_SUCCESS_RETRY:
+			DPRINTFN(9, ("data frame sent after %u retries\n",
+			    (le32toh(desc->flags) >> 5) & 0x7));
+			ifp->if_opackets++;
+			break;
+
+		case RAL_TX_FAIL_RETRY:
+			DPRINTFN(9, ("sending data frame failed (too much "
+			    "retries)\n"));
+			if (data->id.id_node != NULL) {
+				ral_rssadapt_lower_rate(ic, data->ni,
+				    &rn->rssadapt, &data->id);
+			}
+			ifp->if_oerrors++;
+			break;
+
+		case RAL_TX_FAIL_INVALID:
+		case RAL_TX_FAIL_OTHER:
+		default:
+			device_printf(sc->sc_dev, "sending data frame failed "
+			    "0x%08x\n", le32toh(desc->flags));
+			ifp->if_oerrors++;
+		}
+
+		bus_dmamap_sync(sc->txq.data_dmat, data->map,
+		    BUS_DMASYNC_POSTWRITE);
+		bus_dmamap_unload(sc->txq.data_dmat, data->map);
+		m_freem(data->m);
+		data->m = NULL;
+		ieee80211_free_node(data->ni);
+		data->ni = NULL;
+
+		/* descriptor is no longer valid */
+		desc->flags &= ~htole32(RAL_TX_VALID);
+
+		DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next));
+
+		sc->txq.queued--;
+		sc->txq.next = (sc->txq.next + 1) % RAL_TX_RING_COUNT;
+	}
+
+	bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
+	    BUS_DMASYNC_PREWRITE);
+
+	sc->sc_tx_timer = 0;
+	ifp->if_flags &= ~IFF_OACTIVE;
+	ral_start(ifp);
+}
+
+static void
+ral_prio_intr(struct ral_softc *sc)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ifnet *ifp = ic->ic_ifp;
+	struct ral_tx_desc *desc;
+	struct ral_tx_data *data;
+
+	bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
+	    BUS_DMASYNC_POSTREAD);
+
+	for (;;) {
+		desc = &sc->prioq.desc[sc->prioq.next];
+		data = &sc->prioq.data[sc->prioq.next];
+
+		if ((le32toh(desc->flags) & RAL_TX_BUSY) ||
+		    !(le32toh(desc->flags) & RAL_TX_VALID))
+			break;
+
+		switch (le32toh(desc->flags) & RAL_TX_RESULT_MASK) {
+		case RAL_TX_SUCCESS:
+			DPRINTFN(10, ("mgt frame sent successfully\n"));
+			break;
+
+		case RAL_TX_SUCCESS_RETRY:
+			DPRINTFN(9, ("mgt frame sent after %u retries\n",
+			    (le32toh(desc->flags) >> 5) & 0x7));
+			break;
+
+		case RAL_TX_FAIL_RETRY:
+			DPRINTFN(9, ("sending mgt frame failed (too much "
+			    "retries)\n"));
+			break;
+
+		case RAL_TX_FAIL_INVALID:
+		case RAL_TX_FAIL_OTHER:
+		default:
+			device_printf(sc->sc_dev, "sending mgt frame failed "
+			    "0x%08x\n", le32toh(desc->flags));
+		}
+
+		bus_dmamap_sync(sc->prioq.data_dmat, data->map,
+		    BUS_DMASYNC_POSTWRITE);
+		bus_dmamap_unload(sc->prioq.data_dmat, data->map);
+		m_freem(data->m);
+		data->m = NULL;
+		ieee80211_free_node(data->ni);
+		data->ni = NULL;
+
+		/* descriptor is no longer valid */
+		desc->flags &= ~htole32(RAL_TX_VALID);
+
+		DPRINTFN(15, ("prio done idx=%u\n", sc->prioq.next));
+
+		sc->prioq.queued--;
+		sc->prioq.next = (sc->prioq.next + 1) % RAL_PRIO_RING_COUNT;
+	}
+
+	bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
+	    BUS_DMASYNC_PREWRITE);
+
+	sc->sc_tx_timer = 0;
+	ifp->if_flags &= ~IFF_OACTIVE;
+	ral_start(ifp);
+}
+
+/*
+ * Some frames were processed by the hardware cipher engine and are ready for
+ * transmission to the IEEE802.11 layer.
+ */
+static void
+ral_decryption_intr(struct ral_softc *sc)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ifnet *ifp = ic->ic_ifp;
+	struct ral_rx_desc *desc;
+	struct ral_rx_data *data;
+	bus_addr_t physaddr;
+	struct ieee80211_frame *wh;
+	struct ieee80211_node *ni;
+	struct ral_node *rn;
+	struct mbuf *m;
+	int hw, error;
+
+	/* retrieve last decriptor index processed by cipher engine */
+	hw = (RAL_READ(sc, RAL_SECCSR0) - sc->rxq.physaddr) / RAL_RX_DESC_SIZE;
+
+	bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
+	    BUS_DMASYNC_POSTREAD);
+
+	for (; sc->rxq.cur_decrypt != hw;) {
+		desc = &sc->rxq.desc[sc->rxq.cur_decrypt];
+		data = &sc->rxq.data[sc->rxq.cur_decrypt];
+
+		if ((le32toh(desc->flags) & RAL_RX_BUSY) ||
+		    (le32toh(desc->flags) & RAL_RX_CIPHER_BUSY))
+			break;
+
+		if (data->drop) {
+			ifp->if_ierrors++;
+			goto skip;
+		}
+
+		if ((le32toh(desc->flags) & RAL_RX_CIPHER_MASK) != 0 &&
+		    (le32toh(desc->flags) & RAL_RX_ICV_ERROR)) {
+			ifp->if_ierrors++;
+			goto skip;
+		}
+
+		bus_dmamap_sync(sc->rxq.data_dmat, data->map,
+		    BUS_DMASYNC_POSTREAD);
+		bus_dmamap_unload(sc->rxq.data_dmat, data->map);
+
+		/* finalize mbuf */
+		m = data->m;
+		m->m_pkthdr.rcvif = ifp;
+		m->m_pkthdr.len = m->m_len =
+		    (le32toh(desc->flags) >> 16) & 0xfff;
+
+		if (sc->sc_drvbpf != NULL) {
+			struct ral_rx_radiotap_header *tap = &sc->sc_rxtap;
+			uint32_t tsf_lo, tsf_hi;
+
+			/* get timestamp (low and high 32 bits) */
+			tsf_lo = RAL_READ(sc, RAL_CSR16);
+			tsf_hi = RAL_READ(sc, RAL_CSR17);
+
+			tap->wr_tsf =
+			    htole64(((uint64_t)tsf_hi << 32) | tsf_lo);
+			tap->wr_flags = 0;
+			tap->wr_chan_freq = htole16(ic->ic_ibss_chan->ic_freq);
+			tap->wr_chan_flags =
+			    htole16(ic->ic_ibss_chan->ic_flags);
+			tap->wr_antenna = sc->rx_ant;
+			tap->wr_antsignal = desc->rssi;
+
+			bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m);
+		}
+
+		wh = mtod(m, struct ieee80211_frame *);
+		ni = ieee80211_find_rxnode(ic,
+		    (struct ieee80211_frame_min *)wh);
+
+		/* send the frame to the 802.11 layer */
+		ieee80211_input(ic, m, ni, desc->rssi, 0);
+
+		/* give rssi to the rate adatation algorithm */
+		rn = (struct ral_node *)ni;
+		ral_rssadapt_input(ic, ni, &rn->rssadapt, desc->rssi);
+
+		/* node is no longer needed */
+		ieee80211_free_node(ni);
+
+		data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
+		if (data->m == NULL) {
+			device_printf(sc->sc_dev,
+			    "could not allocate rx mbuf\n");
+			break;
+		}
+
+		error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
+		    mtod(data->m, void *), MCLBYTES, ral_dma_map_addr,
+		    &physaddr, 0);
+		if (error != 0) {
+			device_printf(sc->sc_dev,
+			    "could not load rx buf DMA map\n");
+			m_freem(data->m);
+			data->m = NULL;
+			break;
+		}
+
+		desc->physaddr = htole32(physaddr);
+skip:		desc->flags = htole32(RAL_RX_BUSY);
+
+		DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt));
+
+		sc->rxq.cur_decrypt =
+		    (sc->rxq.cur_decrypt + 1) % RAL_RX_RING_COUNT;
+	}
+
+	bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
+	    BUS_DMASYNC_PREWRITE);
+}
+
+/*
+ * Some frames were received. Pass them to the hardware cipher engine before
+ * sending them to the 802.11 layer.
+ */
+static void
+ral_rx_intr(struct ral_softc *sc)
+{
+	struct ral_rx_desc *desc;
+	struct ral_rx_data *data;
+
+	bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
+	    BUS_DMASYNC_POSTREAD);
+
+	for (;;) {
+		desc = &sc->rxq.desc[sc->rxq.cur];
+		data = &sc->rxq.data[sc->rxq.cur];
+
+		if ((le32toh(desc->flags) & RAL_RX_BUSY) ||
+		    (le32toh(desc->flags) & RAL_RX_CIPHER_BUSY))
+			break;
+
+		data->drop = 0;
+
+		if ((le32toh(desc->flags) & RAL_RX_PHY_ERROR) ||
+		    (le32toh(desc->flags) & RAL_RX_CRC_ERROR)) {
+			/*
+			 * This should not happen since we did not request
+			 * to receive those frames when we filled RXCSR0.
+			 */
+			DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n",
+			    le32toh(desc->flags)));
+			data->drop = 1;
+		}
+
+		if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) {
+			DPRINTFN(5, ("bad length\n"));
+			data->drop = 1;
+		}
+
+		/* mark the frame for decryption */
+		desc->flags |= htole32(RAL_RX_CIPHER_BUSY);
+
+		DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
+
+		sc->rxq.cur = (sc->rxq.cur + 1) % RAL_RX_RING_COUNT;
+	}
+
+	bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map,
+	    BUS_DMASYNC_PREWRITE);
+
+	/* kick decrypt */
+	RAL_WRITE(sc, RAL_SECCSR0, RAL_KICK_DECRYPT);
+}
+
+/*
+ * This function is called periodically in IBSS mode when a new beacon must be
+ * sent out.
+ */
+static void
+ral_beacon_expire(struct ral_softc *sc)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ral_tx_data *data;
+
+	if (ic->ic_opmode != IEEE80211_M_IBSS &&
+	    ic->ic_opmode != IEEE80211_M_HOSTAP)
+		return;
+
+	data = &sc->bcnq.data[sc->bcnq.next];
+
+	bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE);
+	bus_dmamap_unload(sc->bcnq.data_dmat, data->map);
+
+	ieee80211_beacon_update(ic, data->ni, &sc->sc_bo, data->m, 1);
+
+	if (ic->ic_rawbpf != NULL)
+		bpf_mtap(ic->ic_rawbpf, data->m);
+
+	ral_tx_bcn(sc, data->m, data->ni);
+
+	DPRINTFN(15, ("beacon expired\n"));
+
+	sc->bcnq.next = (sc->bcnq.next + 1) % RAL_BEACON_RING_COUNT;
+}
+
+static void
+ral_wakeup_expire(struct ral_softc *sc)
+{
+	DPRINTFN(2, ("wakeup expired\n"));
+}
+
+static void
+ral_intr(void *arg)
+{
+	struct ral_softc *sc = arg;
+	uint32_t r;
+
+	RAL_LOCK(sc);
+
+	/* disable interrupts */
+	RAL_WRITE(sc, RAL_CSR8, 0xffffffff);
+
+	r = RAL_READ(sc, RAL_CSR7);
+	RAL_WRITE(sc, RAL_CSR7, r);
+
+	if (r & RAL_BEACON_EXPIRE)
+		ral_beacon_expire(sc);
+
+	if (r & RAL_WAKEUP_EXPIRE)
+		ral_wakeup_expire(sc);
+
+	if (r & RAL_ENCRYPTION_DONE)
+		ral_encryption_intr(sc);
+
+	if (r & RAL_TX_DONE)
+		ral_tx_intr(sc);
+
+	if (r & RAL_PRIO_DONE)
+		ral_prio_intr(sc);
+
+	if (r & RAL_DECRYPTION_DONE)
+		ral_decryption_intr(sc);
+
+	if (r & RAL_RX_DONE)
+		ral_rx_intr(sc);
+
+	/* re-enable interrupts */
+	RAL_WRITE(sc, RAL_CSR8, RAL_INTR_MASK);
+
+	RAL_UNLOCK(sc);
+}
+
+/* quickly determine if a given rate is CCK or OFDM */
+#define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
+
+#define RAL_ACK_SIZE	14	/* 10 + 4(FCS) */
+#define RAL_CTS_SIZE	14	/* 10 + 4(FCS) */
+#define RAL_SIFS	10
+
+/*
+ * Return the expected ack rate for a frame transmitted at rate `rate'.
+ * XXX: this should depend on the destination node basic rate set.
+ */
+static int
+ral_ack_rate(int rate)
+{
+	switch (rate) {
+	/* CCK rates */
+	case 2:
+		return 2;
+	case 4:
+	case 11:
+	case 22:
+		return 4;
+
+	/* OFDM rates */
+	case 12:
+	case 18:
+		return 12;
+	case 24:
+	case 36:
+		return 24;
+	case 48:
+	case 72:
+	case 96:
+	case 108:
+		return 48;
+	}
+
+	/* default to 1Mbps */
+	return 2;
+}
+
+/*
+ * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'.
+ * The function automatically determines the operating mode depending on the
+ * given rate. `flags' indicates whether short preamble is in use or not.
+ */
+static uint16_t
+ral_txtime(int len, int rate, uint32_t flags)
+{
+	uint16_t txtime;
+	int ceil, dbps;
+
+	if (RAL_RATE_IS_OFDM(rate)) {
+		/*
+		 * OFDM TXTIME calculation.
+		 * From IEEE Std 802.11a-1999, pp. 37.
+		 */
+		dbps = rate * 2; /* data bits per OFDM symbol */
+
+		ceil = (16 + 8 * len + 6) / dbps;
+		if ((16 + 8 * len + 6) % dbps != 0)
+			ceil++;
+
+		txtime = 16 + 4 + 4 * ceil + 6;
+	} else {
+		/*
+		 * High Rate TXTIME calculation.
+		 * From IEEE Std 802.11b-1999, pp. 28.
+		 */
+		ceil = (8 * len * 2) / rate;
+		if ((8 * len * 2) % rate != 0)
+			ceil++;
+
+		if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE))
+			txtime =  72 + 24 + ceil;
+		else
+			txtime = 144 + 48 + ceil;
+	}
+
+	return txtime;
+}
+
+static uint8_t
+ral_plcp_signal(int rate)
+{
+	switch (rate) {
+	/* CCK rates (returned values are device-dependent) */
+	case 2:		return 0x0;
+	case 4:		return 0x1;
+	case 11:	return 0x2;
+	case 22:	return 0x3;
+
+	/* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
+	case 12:	return 0xb;
+	case 18:	return 0xf;
+	case 24:	return 0xa;
+	case 36:	return 0xe;
+	case 48:	return 0x9;
+	case 72:	return 0xd;
+	case 96:	return 0x8;
+	case 108:	return 0xc;
+
+	/* unsupported rates (should not get there) */
+	default:	return 0xff;
+	}
+}
+
+static void
+ral_setup_tx_desc(struct ral_softc *sc, struct ral_tx_desc *desc,
+    uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	uint16_t plcp_length;
+	int remainder;
+
+	desc->flags = htole32(flags);
+	desc->flags |= htole32(len << 16);
+	desc->flags |= encrypt ? htole32(RAL_TX_CIPHER_BUSY) :
+	    htole32(RAL_TX_BUSY | RAL_TX_VALID);
+	if (RAL_RATE_IS_OFDM(rate))
+		desc->flags |= htole32(RAL_TX_OFDM);
+
+	desc->physaddr = htole32(physaddr);
+	desc->wme = htole16(RAL_LOGCWMAX(8) | RAL_LOGCWMIN(3) | RAL_AIFSN(2));
+
+	/*
+	 * Fill PLCP fields.
+	 */
+	desc->plcp_service = 4;
+
+	len += 4; /* account for FCS */
+	if (RAL_RATE_IS_OFDM(rate)) {
+		/*
+		 * PLCP length field (LENGTH).
+		 * From IEEE Std 802.11a-1999, pp. 14.
+		 */
+		plcp_length = len & 0xfff;
+		desc->plcp_length = htole16((plcp_length >> 6) << 8 |
+		    (plcp_length & 0x3f));
+	} else {
+		/*
+		 * Long PLCP LENGTH field.
+		 * From IEEE Std 802.11b-1999, pp. 16.
+		 */
+		plcp_length = (8 * len * 2) / rate;
+		remainder = (8 * len * 2) % rate;
+		if (remainder != 0) {
+			if (rate == 22 && (rate - remainder) / 16 != 0)
+				desc->plcp_service |= RAL_PLCP_LENGEXT;
+			plcp_length++;
+		}
+		desc->plcp_length = htole16(plcp_length);
+	}
+
+	desc->plcp_signal = ral_plcp_signal(rate);
+	if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
+		desc->plcp_signal |= 0x08;
+}
+
+static int
+ral_tx_bcn(struct ral_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ral_tx_desc *desc;
+	struct ral_tx_data *data;
+	bus_dma_segment_t segs[RAL_MAX_SCATTER];
+	int nsegs, rate, error;
+
+	desc = &sc->bcnq.desc[sc->bcnq.cur];
+	data = &sc->bcnq.data[sc->bcnq.cur];
+
+	rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 4;
+
+	error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0,
+	    segs, &nsegs, BUS_DMA_NOWAIT);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
+		    error);
+		m_freem(m0);
+		return error;
+	}
+
+	if (sc->sc_drvbpf != NULL) {
+		struct ral_tx_radiotap_header *tap = &sc->sc_txtap;
+
+		tap->wt_flags = 0;
+		tap->wt_rate = rate;
+		tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq);
+		tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags);
+		tap->wt_antenna = sc->tx_ant;
+
+		bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
+	}
+
+	data->m = m0;
+	data->ni = ni;
+
+	ral_setup_tx_desc(sc, desc, RAL_TX_IFS_NEWBACKOFF | RAL_TX_TIMESTAMP,
+	    m0->m_pkthdr.len, rate, 0, segs->ds_addr);
+
+	DPRINTFN(10, ("sending beacon frame len=%u idx=%u rate=%u\n",
+	    m0->m_pkthdr.len, sc->bcnq.cur, rate));
+
+	bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
+	bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map,
+	    BUS_DMASYNC_PREWRITE);
+
+	sc->bcnq.cur = (sc->bcnq.cur + 1) % RAL_BEACON_RING_COUNT;
+
+	return 0;
+}
+
+static int
+ral_tx_mgt(struct ral_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ral_tx_desc *desc;
+	struct ral_tx_data *data;
+	struct ieee80211_frame *wh;
+	bus_dma_segment_t segs[RAL_MAX_SCATTER];
+	uint16_t dur;
+	uint32_t flags = 0;
+	int nsegs, rate, error;
+
+	desc = &sc->prioq.desc[sc->prioq.cur];
+	data = &sc->prioq.data[sc->prioq.cur];
+
+	rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 4;
+
+	error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0,
+	    segs, &nsegs, 0);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
+		    error);
+		m_freem(m0);
+		return error;
+	}
+
+	if (sc->sc_drvbpf != NULL) {
+		struct ral_tx_radiotap_header *tap = &sc->sc_txtap;
+
+		tap->wt_flags = 0;
+		tap->wt_rate = rate;
+		tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq);
+		tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags);
+		tap->wt_antenna = sc->tx_ant;
+
+		bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
+	}
+
+	data->m = m0;
+	data->ni = ni;
+
+	wh = mtod(m0, struct ieee80211_frame *);
+
+	if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+		flags |= RAL_TX_ACK;
+
+		dur = ral_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) + RAL_SIFS;
+		*(uint16_t *)wh->i_dur = htole16(dur);
+
+		/* tell hardware to add timestamp for probe responses */
+		if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
+		    IEEE80211_FC0_TYPE_MGT &&
+		    (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) ==
+		    IEEE80211_FC0_SUBTYPE_PROBE_RESP)
+			flags |= RAL_TX_TIMESTAMP;
+	}
+
+	ral_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0,
+	    segs->ds_addr);
+
+	bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
+	bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map,
+	    BUS_DMASYNC_PREWRITE);
+
+	DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n",
+	    m0->m_pkthdr.len, sc->prioq.cur, rate));
+
+	/* kick prio */
+	sc->prioq.queued++;
+	sc->prioq.cur = (sc->prioq.cur + 1) % RAL_PRIO_RING_COUNT;
+	RAL_WRITE(sc, RAL_TXCSR0, RAL_KICK_PRIO);
+
+	return 0;
+}
+
+/*
+ * Build a RTS control frame.
+ */
+static struct mbuf *
+ral_get_rts(struct ral_softc *sc, struct ieee80211_frame *wh, uint16_t dur)
+{
+	struct ieee80211_frame_rts *rts;
+	struct mbuf *m;
+
+	MGETHDR(m, M_DONTWAIT, MT_DATA);
+	if (m == NULL) {
+		sc->sc_ic.ic_stats.is_tx_nobuf++;
+		device_printf(sc->sc_dev, "could not allocate RTS frame\n");
+		return NULL;
+	}
+
+	rts = mtod(m, struct ieee80211_frame_rts *);
+
+	rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL |
+	    IEEE80211_FC0_SUBTYPE_RTS;
+	rts->i_fc[1] = IEEE80211_FC1_DIR_NODS;
+	*(uint16_t *)rts->i_dur = htole16(dur);
+	IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1);
+	IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2);
+
+	m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts);
+
+	return m;
+}
+
+static int
+ral_tx_data(struct ral_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ral_tx_desc *desc;
+	struct ral_tx_data *data;
+	struct ral_node *rn;
+	struct ieee80211_rateset *rs;
+	struct ieee80211_frame *wh;
+	struct ieee80211_key *k;
+	struct mbuf *mnew;
+	bus_dma_segment_t segs[RAL_MAX_SCATTER];
+	uint16_t dur;
+	uint32_t flags = 0;
+	int nsegs, rate, error;
+
+	wh = mtod(m0, struct ieee80211_frame *);
+
+	if (ic->ic_fixed_rate != -1) {
+		rs = &ic->ic_sup_rates[ic->ic_curmode];
+		rate = rs->rs_rates[ic->ic_fixed_rate];
+	} else {
+		rs = &ni->ni_rates;
+		rn = (struct ral_node *)ni;
+		ni->ni_txrate = ral_rssadapt_choose(&rn->rssadapt, rs,
+		    wh, m0->m_pkthdr.len, NULL, 0);
+		rate = rs->rs_rates[ni->ni_txrate];
+	}
+	rate &= IEEE80211_RATE_VAL;
+
+	if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
+		k = ieee80211_crypto_encap(ic, ni, m0);
+		if (k == NULL)
+			return ENOBUFS;
+
+		/* packet header may have moved, reset our local pointer */
+		wh = mtod(m0, struct ieee80211_frame *);
+	}
+
+	/*
+	 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange
+	 * for directed frames only when the length of the MPDU is greater
+	 * than the length threshold indicated by [...]" ic_rtsthreshold.
+	 */
+	if (!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
+	    m0->m_pkthdr.len > ic->ic_rtsthreshold) {
+		struct mbuf *m;
+		uint16_t dur;
+		int rtsrate, ackrate;
+
+		rtsrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 4;
+		ackrate = ral_ack_rate(rate);
+
+		dur = ral_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) +
+		      ral_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) +
+		      ral_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) +
+		      3 * RAL_SIFS;
+
+		m = ral_get_rts(sc, wh, dur);
+
+		desc = &sc->txq.desc[sc->txq.cur_encrypt];
+		data = &sc->txq.data[sc->txq.cur_encrypt];
+
+		error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map,
+		    m, segs, &nsegs, 0);
+		if (error != 0) {
+			device_printf(sc->sc_dev,
+			    "could not map mbuf (error %d)\n", error);
+			m_freem(m);
+			m_freem(m0);
+			return error;
+		}
+
+		/* avoid multiple free() of the same node for each fragment */
+		ieee80211_ref_node(ni);
+
+		data->m = m;
+		data->ni = ni;
+
+		/* RTS frames are not taken into account for rssadapt */
+		data->id.id_node = NULL;
+
+		ral_setup_tx_desc(sc, desc, RAL_TX_ACK | RAL_TX_MORE_FRAG,
+		    m->m_pkthdr.len, rtsrate, 1, segs->ds_addr);
+
+		bus_dmamap_sync(sc->txq.data_dmat, data->map,
+		    BUS_DMASYNC_PREWRITE);
+
+		sc->txq.queued++;
+		sc->txq.cur_encrypt =
+		    (sc->txq.cur_encrypt + 1) % RAL_TX_RING_COUNT;
+
+		/*
+		 * IEEE Std 802.11-1999: when an RTS/CTS exchange is used, the
+		 * asynchronous data frame shall be transmitted after the CTS
+		 * frame and a SIFS period.
+		 */
+		flags |= RAL_TX_LONG_RETRY | RAL_TX_IFS_SIFS;
+	}
+
+	data = &sc->txq.data[sc->txq.cur_encrypt];
+	desc = &sc->txq.desc[sc->txq.cur_encrypt];
+
+	mnew = m_defrag(m0, M_DONTWAIT);
+	if (mnew == NULL) {
+		device_printf(sc->sc_dev, "could not defragment mbuf\n");
+		m_freem(m0);
+		return ENOMEM;
+	}
+	m0 = mnew;
+
+	error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0,
+	    segs, &nsegs, 0);
+	if (error != 0) {
+		device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
+		    error);
+		m_freem(m0);
+		return error;
+	}
+
+	if (sc->sc_drvbpf != NULL) {
+		struct ral_tx_radiotap_header *tap = &sc->sc_txtap;
+
+		tap->wt_flags = 0;
+		tap->wt_rate = rate;
+		tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq);
+		tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags);
+		tap->wt_antenna = sc->tx_ant;
+
+		bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0);
+	}
+
+	data->m = m0;
+	data->ni = ni;
+
+	/* remember link conditions for rate adaptation algorithm */
+	if (ic->ic_fixed_rate == -1) {
+		data->id.id_len = m0->m_pkthdr.len;
+		data->id.id_rateidx = ni->ni_txrate;
+		data->id.id_node = ni;
+		data->id.id_rssi = ni->ni_rssi;
+	} else
+		data->id.id_node = NULL;
+
+	if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+		flags |= RAL_TX_ACK;
+
+		dur = ral_txtime(RAL_ACK_SIZE, ral_ack_rate(rate),
+		    ic->ic_flags) + RAL_SIFS;
+		*(uint16_t *)wh->i_dur = htole16(dur);
+	}
+
+	ral_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1,
+	    segs->ds_addr);
+
+	bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE);
+	bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map,
+	    BUS_DMASYNC_PREWRITE);
+
+	DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n",
+	    m0->m_pkthdr.len, sc->txq.cur_encrypt, rate));
+
+	/* kick encrypt */
+	sc->txq.queued++;
+	sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RAL_TX_RING_COUNT;
+	RAL_WRITE(sc, RAL_SECCSR1, RAL_KICK_ENCRYPT);
+
+	return 0;
+}
+
+static void
+ral_start(struct ifnet *ifp)
+{
+	struct ral_softc *sc = ifp->if_softc;
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct mbuf *m0;
+	struct ether_header *eh;
+	struct ieee80211_node *ni;
+
+	RAL_LOCK(sc);
+
+	for (;;) {
+		IF_POLL(&ic->ic_mgtq, m0);
+		if (m0 != NULL) {
+			if (sc->prioq.queued >= RAL_PRIO_RING_COUNT) {
+				ifp->if_flags |= IFF_OACTIVE;
+				break;
+			}
+			IF_DEQUEUE(&ic->ic_mgtq, m0);
+
+			ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif;
+			m0->m_pkthdr.rcvif = NULL;
+
+			if (ic->ic_rawbpf != NULL)
+				bpf_mtap(ic->ic_rawbpf, m0);
+
+			if (ral_tx_mgt(sc, m0, ni) != 0)
+				break;
+
+		} else {
+			if (ic->ic_state != IEEE80211_S_RUN)
+				break;
+			IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
+			if (m0 == NULL)
+				break;
+			if (sc->txq.queued >= RAL_TX_RING_COUNT - 1) {
+				IFQ_DRV_PREPEND(&ifp->if_snd, m0);
+				ifp->if_flags |= IFF_OACTIVE;
+				break;
+			}
+
+			if (m0->m_len < sizeof (struct ether_header) &&
+			    !(m0 = m_pullup(m0, sizeof (struct ether_header))))
+				continue;
+
+			eh = mtod(m0, struct ether_header *);
+			ni = ieee80211_find_txnode(ic, eh->ether_dhost);
+			if (ni == NULL) {
+				m_freem(m0);
+				continue;
+			}
+			BPF_MTAP(ifp, m0);
+
+			m0 = ieee80211_encap(ic, m0, ni);
+			if (m0 == NULL)
+				continue;
+
+			if (ic->ic_rawbpf != NULL)
+				bpf_mtap(ic->ic_rawbpf, m0);
+
+			if (ral_tx_data(sc, m0, ni) != 0) {
+				ieee80211_free_node(ni);
+				ifp->if_oerrors++;
+				break;
+			}
+		}
+
+		sc->sc_tx_timer = 5;
+		ifp->if_timer = 1;
+	}
+
+	RAL_UNLOCK(sc);
+}
+
+static void
+ral_watchdog(struct ifnet *ifp)
+{
+	struct ral_softc *sc = ifp->if_softc;
+	struct ieee80211com *ic = &sc->sc_ic;
+
+	RAL_LOCK(sc);
+
+	ifp->if_timer = 0;
+
+	if (sc->sc_tx_timer > 0) {
+		if (--sc->sc_tx_timer == 0) {
+			device_printf(sc->sc_dev, "device timeout\n");
+			ral_init(sc);
+			ifp->if_oerrors++;
+			RAL_UNLOCK(sc);
+			return;
+		}
+		ifp->if_timer = 1;
+	}
+
+	ieee80211_watchdog(ic);
+
+	RAL_UNLOCK(sc);
+}
+
+/*
+ * This function allows for fast channel switching in monitor mode (used by
+ * net-mgmt/kismet). In IBSS mode, we must explicitly reset the interface to
+ * generate a new beacon frame.
+ */
+static int
+ral_reset(struct ifnet *ifp)
+{
+	struct ral_softc *sc = ifp->if_softc;
+	struct ieee80211com *ic = &sc->sc_ic;
+
+	if (ic->ic_opmode != IEEE80211_M_MONITOR)
+		return ENETRESET;
+
+	ral_set_chan(sc, ic->ic_ibss_chan);
+
+	return 0;
+}
+
+static int
+ral_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
+{
+	struct ral_softc *sc = ifp->if_softc;
+	struct ieee80211com *ic = &sc->sc_ic;
+	int error = 0;
+
+	RAL_LOCK(sc);
+
+	switch (cmd) {
+	case SIOCSIFFLAGS:
+		if (ifp->if_flags & IFF_UP) {
+			if (ifp->if_flags & IFF_RUNNING)
+				ral_update_promisc(sc);
+			else
+				ral_init(sc);
+		} else {
+			if (ifp->if_flags & IFF_RUNNING)
+				ral_stop(sc);
+		}
+		break;
+
+	default:
+		error = ieee80211_ioctl(ic, cmd, data);
+	}
+
+	if (error == ENETRESET) {
+		if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
+		    (IFF_UP | IFF_RUNNING))
+			ral_init(sc);
+		error = 0;
+	}
+
+	RAL_UNLOCK(sc);
+
+	return error;
+}
+
+static void
+ral_bbp_write(struct ral_softc *sc, uint8_t reg, uint8_t val)
+{
+	uint32_t tmp;
+	int ntries;
+
+	for (ntries = 0; ntries < 100; ntries++) {
+		if (!(RAL_READ(sc, RAL_BBPCSR) & RAL_BBP_BUSY))
+			break;
+		DELAY(1);
+	}
+	if (ntries == 100) {
+		device_printf(sc->sc_dev, "could not write to BBP\n");
+		return;
+	}
+
+	tmp = RAL_BBP_WRITE | RAL_BBP_BUSY | reg << 8 | val;
+	RAL_WRITE(sc, RAL_BBPCSR, tmp);
+
+	DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val));
+}
+
+static uint8_t
+ral_bbp_read(struct ral_softc *sc, uint8_t reg)
+{
+	uint32_t val;
+	int ntries;
+
+	val = RAL_BBP_BUSY | reg << 8;
+	RAL_WRITE(sc, RAL_BBPCSR, val);
+
+	for (ntries = 0; ntries < 100; ntries++) {
+		val = RAL_READ(sc, RAL_BBPCSR);
+		if (!(val & RAL_BBP_BUSY))
+			return val & 0xff;
+		DELAY(1);
+	}
+
+	device_printf(sc->sc_dev, "could not read from BBP\n");
+	return 0;
+}
+
+static void
+ral_rf_write(struct ral_softc *sc, uint8_t reg, uint32_t val)
+{
+	uint32_t tmp;
+	int ntries;
+
+	for (ntries = 0; ntries < 100; ntries++) {
+		if (!(RAL_READ(sc, RAL_RFCSR) & RAL_RF_BUSY))
+			break;
+		DELAY(1);
+	}
+	if (ntries == 100) {
+		device_printf(sc->sc_dev, "could not write to RF\n");
+		return;
+	}
+
+	tmp = RAL_RF_BUSY | RAL_RF_20BIT | (val & 0xfffff) << 2 | (reg & 0x3);
+	RAL_WRITE(sc, RAL_RFCSR, tmp);
+
+	/* remember last written value in sc */
+	sc->rf_regs[reg] = val;
+
+	DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff));
+}
+
+static void
+ral_set_chan(struct ral_softc *sc, struct ieee80211_channel *c)
+{
+#define N(a)	(sizeof (a) / sizeof ((a)[0]))
+	struct ieee80211com *ic = &sc->sc_ic;
+	uint8_t power, tmp;
+	u_int i, chan;
+
+	chan = ieee80211_chan2ieee(ic, c);
+	if (chan == 0 || chan == IEEE80211_CHAN_ANY)
+		return;
+
+	if (IEEE80211_IS_CHAN_2GHZ(c))
+		power = min(sc->txpow[chan - 1], 31);
+	else
+		power = 31;
+
+	DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power));
+
+	switch (sc->rf_rev) {
+	case RAL_RF_2522:
+		ral_rf_write(sc, RAL_RF1, 0x00814);
+		ral_rf_write(sc, RAL_RF2, ral_rf2522_r2[chan - 1]);
+		ral_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
+		break;
+
+	case RAL_RF_2523:
+		ral_rf_write(sc, RAL_RF1, 0x08804);
+		ral_rf_write(sc, RAL_RF2, ral_rf2523_r2[chan - 1]);
+		ral_rf_write(sc, RAL_RF3, power << 7 | 0x38044);
+		ral_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
+		break;
+
+	case RAL_RF_2524:
+		ral_rf_write(sc, RAL_RF1, 0x0c808);
+		ral_rf_write(sc, RAL_RF2, ral_rf2524_r2[chan - 1]);
+		ral_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
+		ral_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
+		break;
+
+	case RAL_RF_2525:
+		ral_rf_write(sc, RAL_RF1, 0x08808);
+		ral_rf_write(sc, RAL_RF2, ral_rf2525_hi_r2[chan - 1]);
+		ral_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
+		ral_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
+
+		ral_rf_write(sc, RAL_RF1, 0x08808);
+		ral_rf_write(sc, RAL_RF2, ral_rf2525_r2[chan - 1]);
+		ral_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
+		ral_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286);
+		break;
+
+	case RAL_RF_2525E:
+		ral_rf_write(sc, RAL_RF1, 0x08808);
+		ral_rf_write(sc, RAL_RF2, ral_rf2525e_r2[chan - 1]);
+		ral_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
+		ral_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282);
+		break;
+
+	case RAL_RF_2526:
+		ral_rf_write(sc, RAL_RF2, ral_rf2526_hi_r2[chan - 1]);
+		ral_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
+		ral_rf_write(sc, RAL_RF1, 0x08804);
+
+		ral_rf_write(sc, RAL_RF2, ral_rf2526_r2[chan - 1]);
+		ral_rf_write(sc, RAL_RF3, power << 7 | 0x18044);
+		ral_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381);
+		break;
+
+	/* dual-band RF */
+	case RAL_RF_5222:
+		for (i = 0; i < N(ral_rf5222); i++)
+			if (ral_rf5222[i].chan == chan)
+				break;
+
+		if (i < N(ral_rf5222)) {
+			ral_rf_write(sc, RAL_RF1, ral_rf5222[i].r1);
+			ral_rf_write(sc, RAL_RF2, ral_rf5222[i].r2);
+			ral_rf_write(sc, RAL_RF3, power << 7 | 0x00040);
+			ral_rf_write(sc, RAL_RF4, ral_rf5222[i].r4);
+		}
+		break;
+	}
+
+	if (ic->ic_state != IEEE80211_S_SCAN) {
+		/* set Japan filter bit for channel 14 */
+		tmp = ral_bbp_read(sc, 70);
+
+		tmp &= ~RAL_JAPAN_FILTER;
+		if (chan == 14)
+			tmp |= RAL_JAPAN_FILTER;
+
+		ral_bbp_write(sc, 70, tmp);
+
+		/* clear CRC errors */
+		RAL_READ(sc, RAL_CNT0);
+	}
+#undef N
+}
+
+#if 0
+/*
+ * Disable RF auto-tuning.
+ */
+static void
+ral_disable_rf_tune(struct ral_softc *sc)
+{
+	uint32_t tmp;
+
+	if (sc->rf_rev != RAL_RF_2523) {
+		tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE;
+		ral_rf_write(sc, RAL_RF1, tmp);
+	}
+
+	tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE;
+	ral_rf_write(sc, RAL_RF3, tmp);
+
+	DPRINTFN(2, ("disabling RF autotune\n"));
+}
+#endif
+
+/*
+ * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF
+ * synchronization.
+ */
+static void
+ral_enable_tsf_sync(struct ral_softc *sc)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	uint16_t logcwmin, preload;
+	uint32_t tmp;
+
+	/* first, disable TSF synchronization */
+	RAL_WRITE(sc, RAL_CSR14, 0);
+
+	tmp = 16 * ic->ic_bss->ni_intval;
+	RAL_WRITE(sc, RAL_CSR12, tmp);
+
+	RAL_WRITE(sc, RAL_CSR13, 0);
+
+	logcwmin = 5;
+	preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024;
+	tmp = logcwmin << 16 | preload;
+	RAL_WRITE(sc, RAL_BCNOCSR, tmp);
+
+	/* finally, enable TSF synchronization */
+	tmp = RAL_ENABLE_TSF | RAL_ENABLE_TBCN;
+	if (ic->ic_opmode == IEEE80211_M_STA)
+		tmp |= RAL_ENABLE_TSF_SYNC(1);
+	else
+		tmp |= RAL_ENABLE_TSF_SYNC(2) | RAL_ENABLE_BEACON_GENERATOR;
+	RAL_WRITE(sc, RAL_CSR14, tmp);
+
+	DPRINTF(("enabling TSF synchronization\n"));
+}
+
+static void
+ral_update_plcp(struct ral_softc *sc)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+
+	/* no short preamble for 1Mbps */
+	RAL_WRITE(sc, RAL_PLCP1MCSR, 0x00700400);
+
+	if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) {
+		/* values taken from the reference driver */
+		RAL_WRITE(sc, RAL_PLCP2MCSR,   0x00380401);
+		RAL_WRITE(sc, RAL_PLCP5p5MCSR, 0x00150402);
+		RAL_WRITE(sc, RAL_PLCP11MCSR,  0x000b8403);
+	} else {
+		/* same values as above or'ed 0x8 */
+		RAL_WRITE(sc, RAL_PLCP2MCSR,   0x00380409);
+		RAL_WRITE(sc, RAL_PLCP5p5MCSR, 0x0015040a);
+		RAL_WRITE(sc, RAL_PLCP11MCSR,  0x000b840b);
+	}
+
+	DPRINTF(("updating PLCP for %s preamble\n",
+	    (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"));
+}
+
+/*
+ * This function can be called by ieee80211_set_shortslottime(). Refer to
+ * IEEE Std 802.11-1999 pp. 85 to know how these values are computed.
+ */
+static void
+ral_update_slot(struct ifnet *ifp)
+{
+	struct ral_softc *sc = ifp->if_softc;
+	struct ieee80211com *ic = &sc->sc_ic;
+	uint8_t slottime;
+	uint16_t sifs, pifs, difs, eifs;
+	uint32_t tmp;
+
+	slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20;
+
+	/* update the MAC slot boundaries */
+	sifs = RAL_SIFS;
+	pifs = sifs + slottime;
+	difs = sifs + 2 * slottime;
+	eifs = sifs + ral_txtime(RAL_ACK_SIZE,
+	    (ic->ic_curmode == IEEE80211_MODE_11A) ? 12 : 2, 0) + difs;
+
+	tmp = RAL_READ(sc, RAL_CSR11);
+	tmp = (tmp & ~0x1f00) | slottime << 8;
+	RAL_WRITE(sc, RAL_CSR11, tmp);
+
+	tmp = pifs << 16 | sifs;
+	RAL_WRITE(sc, RAL_CSR18, tmp);
+
+	tmp = eifs << 16 | difs;
+	RAL_WRITE(sc, RAL_CSR19, tmp);
+
+	DPRINTF(("setting slottime to %uus\n", slottime));
+}
+
+static void
+ral_update_led(struct ral_softc *sc, int led1, int led2)
+{
+	uint32_t tmp;
+
+	/* set ON period to 70ms and OFF period to 30ms */
+	tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30;
+	RAL_WRITE(sc, RAL_LEDCSR, tmp);
+}
+
+static void
+ral_set_bssid(struct ral_softc *sc, uint8_t *bssid)
+{
+	uint32_t tmp;
+
+	tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24;
+	RAL_WRITE(sc, RAL_CSR5, tmp);
+
+	tmp = bssid[4] | bssid[5] << 8;
+	RAL_WRITE(sc, RAL_CSR6, tmp);
+
+	DPRINTF(("setting BSSID to %6D\n", bssid, ":"));
+}
+
+static void
+ral_set_macaddr(struct ral_softc *sc, uint8_t *addr)
+{
+	uint32_t tmp;
+
+	tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24;
+	RAL_WRITE(sc, RAL_CSR3, tmp);
+
+	tmp = addr[4] | addr[5] << 8;
+	RAL_WRITE(sc, RAL_CSR4, tmp);
+
+	DPRINTF(("setting MAC address to %6D\n", addr, ":"));
+}
+
+static void
+ral_get_macaddr(struct ral_softc *sc, uint8_t *addr)
+{
+	uint32_t tmp;
+
+	tmp = RAL_READ(sc, RAL_CSR3);
+	addr[0] = tmp & 0xff;
+	addr[1] = (tmp >>  8) & 0xff;
+	addr[2] = (tmp >> 16) & 0xff;
+	addr[3] = (tmp >> 24);
+
+	tmp = RAL_READ(sc, RAL_CSR4);
+	addr[4] = tmp & 0xff;
+	addr[5] = (tmp >> 8) & 0xff;
+}
+
+static void
+ral_update_promisc(struct ral_softc *sc)
+{
+	struct ifnet *ifp = sc->sc_ic.ic_ifp;
+	uint32_t tmp;
+
+	tmp = RAL_READ(sc, RAL_RXCSR0);
+
+	tmp &= ~RAL_DROP_NOT_TO_ME;
+	if (!(ifp->if_flags & IFF_PROMISC))
+		tmp |= RAL_DROP_NOT_TO_ME;
+
+	RAL_WRITE(sc, RAL_RXCSR0, tmp);
+
+	DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ?
+	    "entering" : "leaving"));
+}
+
+static const char *
+ral_get_rf(int rev)
+{
+	switch (rev) {
+	case RAL_RF_2522:	return "RT2522";
+	case RAL_RF_2523:	return "RT2523";
+	case RAL_RF_2524:	return "RT2524";
+	case RAL_RF_2525:	return "RT2525";
+	case RAL_RF_2525E:	return "RT2525e";
+	case RAL_RF_2526:	return "RT2526";
+	case RAL_RF_5222:	return "RT5222";
+	default:		return "unknown";
+	}
+}
+
+static void
+ral_read_eeprom(struct ral_softc *sc)
+{
+	uint16_t val;
+	int i;
+
+	val = ral_eeprom_read(sc, RAL_EEPROM_CONFIG0);
+	sc->rf_rev =   (val >> 11) & 0x7;
+	sc->hw_radio = (val >> 10) & 0x1;
+	sc->led_mode = (val >> 6)  & 0x7;
+	sc->rx_ant =   (val >> 4)  & 0x3;
+	sc->tx_ant =   (val >> 2)  & 0x3;
+	sc->nb_ant =   val & 0x3;
+
+	/* read default values for BBP registers */
+	for (i = 0; i < 16; i++) {
+		val = ral_eeprom_read(sc, RAL_EEPROM_BBP_BASE + i);
+		sc->bbp_prom[i].reg = val >> 8;
+		sc->bbp_prom[i].val = val & 0xff;
+	}
+
+	/* read Tx power for all b/g channels */
+	for (i = 0; i < 14 / 2; i++) {
+		val = ral_eeprom_read(sc, RAL_EEPROM_TXPOWER + i);
+		sc->txpow[i * 2] = val >> 8;
+		sc->txpow[i * 2 + 1] = val & 0xff;
+	}
+}
+
+static int
+ral_bbp_init(struct ral_softc *sc)
+{
+#define N(a)	(sizeof (a) / sizeof ((a)[0]))
+	int i, ntries;
+
+	/* wait for BBP to be ready */
+	for (ntries = 0; ntries < 100; ntries++) {
+		if (ral_bbp_read(sc, RAL_BBP_VERSION) != 0)
+			break;
+		DELAY(1);
+	}
+	if (ntries == 100) {
+		device_printf(sc->sc_dev, "timeout waiting for BBP\n");
+		return EIO;
+	}
+
+	/* initialize BBP registers to default values */
+	for (i = 0; i < N(ral_def_bbp); i++)
+		ral_bbp_write(sc, ral_def_bbp[i].reg, ral_def_bbp[i].val);
+
+#if 0
+	/* initialize BBP registers to values stored in EEPROM */
+	for (i = 0; i < 16; i++) {
+		if (sc->bbp_prom[i].reg == 0xff)
+			continue;
+		ral_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val);
+	}
+#endif
+
+	return 0;
+#undef N
+}
+
+static void
+ral_set_txantenna(struct ral_softc *sc, int antenna)
+{
+	uint32_t tmp;
+	uint8_t tx;
+
+	tx = ral_bbp_read(sc, RAL_BBP_TX) & ~RAL_BBP_ANTMASK;
+	if (antenna == 1)
+		tx |= RAL_BBP_ANTA;
+	else if (antenna == 2)
+		tx |= RAL_BBP_ANTB;
+	else
+		tx |= RAL_BBP_DIVERSITY;
+
+	/* need to force I/Q flip for RF 2525e, 2526 and 5222 */
+	if (sc->rf_rev == RAL_RF_2525E || sc->rf_rev == RAL_RF_2526 ||
+	    sc->rf_rev == RAL_RF_5222)
+		tx |= RAL_BBP_FLIPIQ;
+
+	ral_bbp_write(sc, RAL_BBP_TX, tx);
+
+	/* update values for CCK and OFDM in BBPCSR1 */
+	tmp = RAL_READ(sc, RAL_BBPCSR1) & ~0x00070007;
+	tmp |= (tx & 0x7) << 16 | (tx & 0x7);
+	RAL_WRITE(sc, RAL_BBPCSR1, tmp);
+}
+
+static void
+ral_set_rxantenna(struct ral_softc *sc, int antenna)
+{
+	uint8_t rx;
+
+	rx = ral_bbp_read(sc, RAL_BBP_RX) & ~RAL_BBP_ANTMASK;
+	if (antenna == 1)
+		rx |= RAL_BBP_ANTA;
+	else if (antenna == 2)
+		rx |= RAL_BBP_ANTB;
+	else
+		rx |= RAL_BBP_DIVERSITY;
+
+	/* need to force no I/Q flip for RF 2525e and 2526 */
+	if (sc->rf_rev == RAL_RF_2525E || sc->rf_rev == RAL_RF_2526)
+		rx &= ~RAL_BBP_FLIPIQ;
+
+	ral_bbp_write(sc, RAL_BBP_RX, rx);
+}
+
+static void
+ral_init(void *priv)
+{
+#define N(a)	(sizeof (a) / sizeof ((a)[0]))
+	struct ral_softc *sc = priv;
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ifnet *ifp = ic->ic_ifp;
+	uint32_t tmp;
+	int i;
+
+	ral_stop(sc);
+
+	/* setup tx rings */
+	tmp = RAL_PRIO_RING_COUNT << 24 |
+	      RAL_ATIM_RING_COUNT << 16 |
+	      RAL_TX_RING_COUNT   <<  8 |
+	      RAL_TX_DESC_SIZE;
+
+	/* rings _must_ be initialized in this _exact_ order! */
+	RAL_WRITE(sc, RAL_TXCSR2, tmp);
+	RAL_WRITE(sc, RAL_TXCSR3, sc->txq.physaddr);
+	RAL_WRITE(sc, RAL_TXCSR5, sc->prioq.physaddr);
+	RAL_WRITE(sc, RAL_TXCSR4, sc->atimq.physaddr);
+	RAL_WRITE(sc, RAL_TXCSR6, sc->bcnq.physaddr);
+
+	/* setup rx ring */
+	tmp = RAL_RX_RING_COUNT << 8 | RAL_RX_DESC_SIZE;
+
+	RAL_WRITE(sc, RAL_RXCSR1, tmp);
+	RAL_WRITE(sc, RAL_RXCSR2, sc->rxq.physaddr);
+
+	/* initialize MAC registers to default values */
+	for (i = 0; i < N(ral_def_mac); i++)
+		RAL_WRITE(sc, ral_def_mac[i].reg, ral_def_mac[i].val);
+
+	IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp));
+	ral_set_macaddr(sc, ic->ic_myaddr);
+
+	/* set supported basic rates (1, 2, 6, 12, 24) */
+	RAL_WRITE(sc, RAL_ARSP_PLCP_1, 0x153);
+
+	ral_set_txantenna(sc, sc->tx_ant);
+	ral_set_rxantenna(sc, sc->rx_ant);
+	ral_update_slot(ifp);
+	ral_update_plcp(sc);
+	ral_update_led(sc, 0, 0);
+
+	RAL_WRITE(sc, RAL_CSR1, RAL_RESET_ASIC);
+	RAL_WRITE(sc, RAL_CSR1, RAL_HOST_READY);
+
+	if (ral_bbp_init(sc) != 0) {
+		ral_stop(sc);
+		return;
+	}
+
+	/* set default BSS channel */
+	ic->ic_bss->ni_chan = ic->ic_ibss_chan;
+	ral_set_chan(sc, ic->ic_bss->ni_chan);
+
+	/* kick Rx */
+	tmp = RAL_DROP_PHY_ERROR | RAL_DROP_CRC_ERROR;
+	if (ic->ic_opmode != IEEE80211_M_MONITOR) {
+		tmp |= RAL_DROP_CTL | RAL_DROP_VERSION_ERROR;
+		if (ic->ic_opmode != IEEE80211_M_HOSTAP)
+			tmp |= RAL_DROP_TODS;
+		if (!(ifp->if_flags & IFF_PROMISC))
+			tmp |= RAL_DROP_NOT_TO_ME;
+	}
+	RAL_WRITE(sc, RAL_RXCSR0, tmp);
+
+	/* clear old FCS and Rx FIFO errors */
+	RAL_READ(sc, RAL_CNT0);
+	RAL_READ(sc, RAL_CNT4);
+
+	/* clear any pending interrupts */
+	RAL_WRITE(sc, RAL_CSR7, 0xffffffff);
+
+	/* enable interrupts */
+	RAL_WRITE(sc, RAL_CSR8, RAL_INTR_MASK);
+
+	ifp->if_flags &= ~IFF_OACTIVE;
+	ifp->if_flags |= IFF_RUNNING;
+
+	if (ic->ic_opmode == IEEE80211_M_MONITOR)
+		ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
+	else
+		ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
+#undef N
+}
+
+void
+ral_stop(void *priv)
+{
+	struct ral_softc *sc = priv;
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ifnet *ifp = ic->ic_ifp;
+
+	ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
+
+	sc->sc_tx_timer = 0;
+	ifp->if_timer = 0;
+	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
+
+	/* abort Tx */
+	RAL_WRITE(sc, RAL_TXCSR0, RAL_ABORT_TX);
+
+	/* disable Rx */
+	RAL_WRITE(sc, RAL_RXCSR0, RAL_DISABLE_RX);
+
+	/* reset ASIC (imply reset BBP) */
+	RAL_WRITE(sc, RAL_CSR1, RAL_RESET_ASIC);
+	RAL_WRITE(sc, RAL_CSR1, 0);
+
+	/* disable interrupts */
+	RAL_WRITE(sc, RAL_CSR8, 0xffffffff);
+
+	/* reset Tx and Rx rings */
+	ral_reset_tx_ring(sc, &sc->txq);
+	ral_reset_tx_ring(sc, &sc->atimq);
+	ral_reset_tx_ring(sc, &sc->prioq);
+	ral_reset_tx_ring(sc, &sc->bcnq);
+	ral_reset_rx_ring(sc, &sc->rxq);
+}
diff --git a/sys/dev/ral/if_ral_pccard.c b/sys/dev/ral/if_ral_pccard.c
new file mode 100644
index 0000000..9a7205d
--- /dev/null
+++ b/sys/dev/ral/if_ral_pccard.c
@@ -0,0 +1,141 @@
+/*	$FreeBSD$	*/
+
+/*-
+ * Copyright (c) 2005
+ *	Damien Bergamini <damien.bergamini@free.fr>
+ *
+ * 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("$FreeBSD$");
+
+/*
+ * CardBus front-end for the Ralink RT2500 driver.
+ */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/sockio.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 <machine/bus.h>
+#include <machine/resource.h>
+#include <sys/rman.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>
+
+#include <net80211/ieee80211_var.h>
+#include <net80211/ieee80211_radiotap.h>
+
+#include <dev/pccard/pccardvar.h>
+#include <dev/pccard/pccard_cis.h>
+
+#include <dev/ral/if_ralrate.h>
+#include <dev/ral/if_ralreg.h>
+#include <dev/ral/if_ralvar.h>
+
+#include "card_if.h"
+#include "pccarddevs.h"
+
+MODULE_DEPEND(ral, pccard, 1, 1, 1);
+MODULE_DEPEND(ral, wlan, 1, 1, 1);
+
+static const struct pccard_product ral_pccard_products[] = {
+	PCMCIA_CARD(RALINK, RT2560, 0),
+
+	{ NULL }
+};
+
+static int ral_pccard_match(device_t);
+static int ral_pccard_probe(device_t);
+static int ral_pccard_attach(device_t);
+
+static device_method_t ral_pccard_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		pccard_compat_probe),
+	DEVMETHOD(device_attach,	pccard_compat_attach),
+	DEVMETHOD(device_detach,	ral_detach),
+	DEVMETHOD(device_shutdown,	ral_shutdown),
+
+	/* Card interface */
+	DEVMETHOD(card_compat_match,	ral_pccard_match),
+	DEVMETHOD(card_compat_probe,	ral_pccard_probe),
+	DEVMETHOD(card_compat_attach,	ral_pccard_attach),
+
+	{ 0, 0 }
+};
+
+static driver_t ral_pccard_driver = {
+	"ral",
+	ral_pccard_methods,
+	sizeof (struct ral_softc)
+};
+
+DRIVER_MODULE(ral, pccard, ral_pccard_driver, ral_devclass, 0, 0);
+
+static int
+ral_pccard_match(device_t dev)
+{
+	const struct pccard_product *pp;
+
+	if ((pp = pccard_product_lookup(dev, ral_pccard_products,
+	    sizeof (struct pccard_product), NULL)) != NULL) {
+		if (pp->pp_name != NULL)
+			device_set_desc(dev, pp->pp_name);
+		return 0;
+	}
+	return ENXIO;
+}
+
+static int
+ral_pccard_probe(device_t dev)
+{
+	int error;
+
+	error = ral_alloc(dev, 0);
+	if (error != 0)
+		return error;
+
+	ral_free(dev);
+
+	return 0;
+}
+
+static int
+ral_pccard_attach(device_t dev)
+{
+	int error;
+
+	error = ral_alloc(dev, 0);
+	if (error != 0)
+		return error;
+
+	error = ral_attach(dev);
+	if (error != 0)
+		ral_free(dev);
+
+	return error;
+}
diff --git a/sys/dev/ral/if_ral_pci.c b/sys/dev/ral/if_ral_pci.c
new file mode 100644
index 0000000..3c1b7b1
--- /dev/null
+++ b/sys/dev/ral/if_ral_pci.c
@@ -0,0 +1,168 @@
+/*	$FreeBSD$	*/
+
+/*-
+ * Copyright (c) 2005
+ *	Damien Bergamini <damien.bergamini@free.fr>
+ *
+ * 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("$FreeBSD$");
+
+/*
+ * PCI front-end for the Ralink RT2500 driver.
+ */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/sockio.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 <machine/bus.h>
+#include <machine/resource.h>
+#include <machine/clock.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>
+
+#include <net80211/ieee80211_var.h>
+#include <net80211/ieee80211_radiotap.h>
+
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+
+#include <dev/ral/if_ralrate.h>
+#include <dev/ral/if_ralreg.h>
+#include <dev/ral/if_ralvar.h>
+
+MODULE_DEPEND(ral, pci, 1, 1, 1);
+MODULE_DEPEND(ral, wlan, 1, 1, 1);
+
+struct ral_pci_ident {
+	uint16_t	vendor;
+	uint16_t	device;
+	const char	*name;
+};
+
+static const struct ral_pci_ident ral_pci_ids[] = {
+	{ 0x1814, 0x0201, "Ralink Technology RT2500" },
+
+	{ 0, 0, NULL }
+};
+
+static int ral_pci_probe(device_t);
+static int ral_pci_attach(device_t);
+static int ral_pci_suspend(device_t);
+static int ral_pci_resume(device_t);
+
+static device_method_t ral_pci_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		ral_pci_probe),
+	DEVMETHOD(device_attach,	ral_pci_attach),
+	DEVMETHOD(device_detach,	ral_detach),
+	DEVMETHOD(device_suspend,	ral_pci_suspend),
+	DEVMETHOD(device_resume,	ral_pci_resume),
+
+	{ 0, 0 }
+};
+
+static driver_t ral_pci_driver = {
+	"ral",
+	ral_pci_methods,
+	sizeof (struct ral_softc)
+};
+
+DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, 0, 0);
+DRIVER_MODULE(ral, cardbus, ral_pci_driver, ral_devclass, 0, 0);
+
+static int
+ral_pci_probe(device_t dev)
+{
+	const struct ral_pci_ident *ident;
+
+	for (ident = ral_pci_ids; ident->name != NULL; ident++) {
+		if (pci_get_vendor(dev) == ident->vendor &&
+		    pci_get_device(dev) == ident->device) {
+			device_set_desc(dev, ident->name);
+			return 0;
+		}
+	}
+	return ENXIO;
+}
+
+/* Base Address Register */
+#define RAL_PCI_BAR0	0x10
+
+static int
+ral_pci_attach(device_t dev)
+{
+	int error;
+
+	if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
+		device_printf(dev, "chip is in D%d power mode "
+		    "-- setting to D0\n", pci_get_powerstate(dev));
+		pci_set_powerstate(dev, PCI_POWERSTATE_D0);
+	}
+
+	/* enable bus-mastering */
+	pci_enable_busmaster(dev);
+
+	error = ral_alloc(dev, RAL_PCI_BAR0);
+	if (error != 0)
+		return error;
+
+	error = ral_attach(dev);
+	if (error != 0)
+		ral_free(dev);
+
+	return error;
+}
+
+static int
+ral_pci_suspend(device_t dev)
+{
+	struct ral_softc *sc = device_get_softc(dev);
+
+	ral_stop(sc);
+
+	return 0;
+}
+
+static int
+ral_pci_resume(device_t dev)
+{
+	struct ral_softc *sc = device_get_softc(dev);
+	struct ifnet *ifp = sc->sc_ic.ic_ifp;
+
+	if (ifp->if_flags & IFF_UP) {
+		ifp->if_init(ifp->if_softc);
+		if (ifp->if_flags & IFF_RUNNING)
+			ifp->if_start(ifp);
+	}
+
+	return 0;
+}
diff --git a/sys/dev/ral/if_ralrate.c b/sys/dev/ral/if_ralrate.c
new file mode 100644
index 0000000..b8922ba
--- /dev/null
+++ b/sys/dev/ral/if_ralrate.c
@@ -0,0 +1,192 @@
+/*	$FreeBSD$	*/
+/* $NetBSD: ieee80211_rssadapt.c,v 1.9 2005/02/26 22:45:09 perry Exp $ */
+/*-
+ * Copyright (c) 2003, 2004 David Young.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ * 3. The name of David Young may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL David
+ * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/sockio.h>
+#include <sys/mbuf.h>
+#include <sys/kernel.h>
+#include <sys/socket.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>
+
+#include <net80211/ieee80211_var.h>
+
+#include <dev/ral/if_ralrate.h>
+
+#ifdef interpolate
+#undef interpolate
+#endif
+#define interpolate(parm, old, new) ((parm##_old * (old) + \
+                                     (parm##_denom - parm##_old) * (new)) / \
+				    parm##_denom)
+
+static struct ral_rssadapt_expavgctl master_expavgctl = {
+	rc_decay_denom : 16,
+	rc_decay_old : 15,
+	rc_thresh_denom : 8,
+	rc_thresh_old : 4,
+	rc_avgrssi_denom : 8,
+	rc_avgrssi_old : 4
+};
+
+int
+ral_rssadapt_choose(struct ral_rssadapt *ra, struct ieee80211_rateset *rs,
+    struct ieee80211_frame *wh, u_int len, const char *dvname, int do_not_adapt)
+{
+	u_int16_t (*thrs)[IEEE80211_RATE_SIZE];
+	int flags = 0, i, rateidx = 0, thridx, top;
+
+	if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
+		flags |= IEEE80211_RATE_BASIC;
+
+	for (i = 0, top = RAL_RSSADAPT_BKT0;
+	     i < RAL_RSSADAPT_BKTS;
+	     i++, top <<= RAL_RSSADAPT_BKTPOWER) {
+		thridx = i;
+		if (len <= top)
+			break;
+	}
+
+	thrs = &ra->ra_rate_thresh[thridx];
+
+	i = rs->rs_nrates;
+	while (--i >= 0) {
+		rateidx = i;
+		if ((rs->rs_rates[i] & flags) != flags)
+			continue;
+		if (do_not_adapt)
+			break;
+		if ((*thrs)[i] < ra->ra_avg_rssi)
+			break;
+	}
+
+	return rateidx;
+}
+
+void
+ral_rssadapt_updatestats(struct ral_rssadapt *ra)
+{
+	long interval;
+
+	ra->ra_pktrate =
+	    (ra->ra_pktrate + 10 * (ra->ra_nfail + ra->ra_nok)) / 2;
+	ra->ra_nfail = ra->ra_nok = 0;
+
+	/* a node is eligible for its rate to be raised every 1/10 to 10
+	 * seconds, more eligible in proportion to recent packet rates.
+	 */
+	interval = MAX(100000, 10000000 / MAX(1, 10 * ra->ra_pktrate));
+	ra->ra_raise_interval.tv_sec = interval / (1000 * 1000);
+	ra->ra_raise_interval.tv_usec = interval % (1000 * 1000);
+}
+
+void
+ral_rssadapt_input(struct ieee80211com *ic, struct ieee80211_node *ni,
+    struct ral_rssadapt *ra, int rssi)
+{
+	ra->ra_avg_rssi = interpolate(master_expavgctl.rc_avgrssi,
+	                              ra->ra_avg_rssi, (rssi << 8));
+}
+
+/*
+ * Adapt the data rate to suit the conditions.  When a transmitted
+ * packet is dropped after RAL_RSSADAPT_RETRY_LIMIT retransmissions,
+ * raise the RSS threshold for transmitting packets of similar length at
+ * the same data rate.
+ */
+void
+ral_rssadapt_lower_rate(struct ieee80211com *ic, struct ieee80211_node *ni,
+    struct ral_rssadapt *ra, struct ral_rssdesc *id)
+{
+	struct ieee80211_rateset *rs = &ni->ni_rates;
+	u_int16_t last_thr;
+	u_int i, thridx, top;
+
+	ra->ra_nfail++;
+
+	if (id->id_rateidx >= rs->rs_nrates)
+		return;
+
+	for (i = 0, top = RAL_RSSADAPT_BKT0;
+	     i < RAL_RSSADAPT_BKTS;
+	     i++, top <<= RAL_RSSADAPT_BKTPOWER) {
+		thridx = i;
+		if (id->id_len <= top)
+			break;
+	}
+
+	last_thr = ra->ra_rate_thresh[thridx][id->id_rateidx];
+	ra->ra_rate_thresh[thridx][id->id_rateidx] =
+	    interpolate(master_expavgctl.rc_thresh, last_thr,
+	                (id->id_rssi << 8));
+}
+
+void
+ral_rssadapt_raise_rate(struct ieee80211com *ic, struct ral_rssadapt *ra,
+    struct ral_rssdesc *id)
+{
+	u_int16_t (*thrs)[IEEE80211_RATE_SIZE], newthr, oldthr;
+	struct ieee80211_node *ni = id->id_node;
+	struct ieee80211_rateset *rs = &ni->ni_rates;
+	int i, rate, top;
+
+	ra->ra_nok++;
+
+	if (!ratecheck(&ra->ra_last_raise, &ra->ra_raise_interval))
+		return;
+
+	for (i = 0, top = RAL_RSSADAPT_BKT0;
+	     i < RAL_RSSADAPT_BKTS;
+	     i++, top <<= RAL_RSSADAPT_BKTPOWER) {
+		thrs = &ra->ra_rate_thresh[i];
+		if (id->id_len <= top)
+			break;
+	}
+
+	if (id->id_rateidx + 1 < rs->rs_nrates &&
+	    (*thrs)[id->id_rateidx + 1] > (*thrs)[id->id_rateidx]) {
+		rate = (rs->rs_rates[id->id_rateidx + 1] & IEEE80211_RATE_VAL);
+
+		oldthr = (*thrs)[id->id_rateidx + 1];
+		if ((*thrs)[id->id_rateidx] == 0)
+			newthr = ra->ra_avg_rssi;
+		else
+			newthr = (*thrs)[id->id_rateidx];
+		(*thrs)[id->id_rateidx + 1] =
+		    interpolate(master_expavgctl.rc_decay, oldthr, newthr);
+	}
+}
diff --git a/sys/dev/ral/if_ralrate.h b/sys/dev/ral/if_ralrate.h
new file mode 100644
index 0000000..50eee44
--- /dev/null
+++ b/sys/dev/ral/if_ralrate.h
@@ -0,0 +1,98 @@
+/*	$FreeBSD$	*/
+/* $NetBSD: ieee80211_rssadapt.h,v 1.4 2005/02/26 22:45:09 perry Exp $ */
+/*-
+ * Copyright (c) 2003, 2004 David Young.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ * 3. The name of David Young may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL David
+ * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ */
+
+/* Data-rate adaptation loosely based on "Link Adaptation Strategy
+ * for IEEE 802.11 WLAN via Received Signal Strength Measurement"
+ * by Javier del Prado Pavon and Sunghyun Choi.
+ */
+
+/* Buckets for frames 0-128 bytes long, 129-1024, 1025-maximum. */
+#define	RAL_RSSADAPT_BKTS		3
+#define RAL_RSSADAPT_BKT0		128
+#define	RAL_RSSADAPT_BKTPOWER	3	/* 2**_BKTPOWER */
+
+#define	ral_rssadapt_thresh_new \
+    (ral_rssadapt_thresh_denom - ral_rssadapt_thresh_old)
+#define	ral_rssadapt_decay_new \
+    (ral_rssadapt_decay_denom - ral_rssadapt_decay_old)
+#define	ral_rssadapt_avgrssi_new \
+    (ral_rssadapt_avgrssi_denom - ral_rssadapt_avgrssi_old)
+
+struct ral_rssadapt_expavgctl {
+	/* RSS threshold decay. */
+	u_int rc_decay_denom;
+	u_int rc_decay_old;
+	/* RSS threshold update. */
+	u_int rc_thresh_denom;
+	u_int rc_thresh_old;
+	/* RSS average update. */
+	u_int rc_avgrssi_denom;
+	u_int rc_avgrssi_old;
+};
+
+struct ral_rssadapt {
+	/* exponential average RSSI << 8 */
+	u_int16_t		ra_avg_rssi;
+	/* Tx failures in this update interval */
+	u_int32_t		ra_nfail;
+	/* Tx successes in this update interval */
+	u_int32_t		ra_nok;
+	/* exponential average packets/second */
+	u_int32_t		ra_pktrate;
+	/* RSSI threshold for each Tx rate */
+	u_int16_t		ra_rate_thresh[RAL_RSSADAPT_BKTS]
+					      [IEEE80211_RATE_SIZE];
+	struct timeval		ra_last_raise;
+	struct timeval		ra_raise_interval;
+};
+
+/* Properties of a Tx packet, for link adaptation. */
+struct ral_rssdesc {
+	u_int			 id_len;	/* Tx packet length */
+	u_int			 id_rateidx;	/* index into ni->ni_rates */
+	struct ieee80211_node	*id_node;	/* destination STA MAC */
+	u_int8_t		 id_rssi;	/* destination STA avg RSS @
+						 * Tx time
+						 */
+};
+
+void	ral_rssadapt_updatestats(struct ral_rssadapt *);
+void	ral_rssadapt_input(struct ieee80211com *, struct ieee80211_node *,
+	    struct ral_rssadapt *, int);
+void	ral_rssadapt_lower_rate(struct ieee80211com *,
+	    struct ieee80211_node *, struct ral_rssadapt *,
+	    struct ral_rssdesc *);
+void	ral_rssadapt_raise_rate(struct ieee80211com *,
+	    struct ral_rssadapt *, struct ral_rssdesc *);
+int	ral_rssadapt_choose(struct ral_rssadapt *,
+	    struct ieee80211_rateset *, struct ieee80211_frame *, u_int,
+	    const char *, int);
diff --git a/sys/dev/ral/if_ralreg.h b/sys/dev/ral/if_ralreg.h
new file mode 100644
index 0000000..bccd0db
--- /dev/null
+++ b/sys/dev/ral/if_ralreg.h
@@ -0,0 +1,313 @@
+/*	$FreeBSD$	*/
+
+/*-
+ * Copyright (c) 2005
+ *	Damien Bergamini <damien.bergamini@free.fr>
+ *
+ * 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 RAL_TX_RING_COUNT	48
+#define RAL_ATIM_RING_COUNT	4
+#define RAL_PRIO_RING_COUNT	16
+#define RAL_BEACON_RING_COUNT	1
+#define RAL_RX_RING_COUNT	32
+
+#define RAL_TX_DESC_SIZE	(sizeof (struct ral_tx_desc))
+#define RAL_RX_DESC_SIZE	(sizeof (struct ral_rx_desc))
+
+#define RAL_MAX_SCATTER	1
+
+/*
+ * Control and status registers.
+ */
+#define RAL_CSR0	0x0000	/* ASIC version number */
+#define RAL_CSR1	0x0004	/* System control */
+#define RAL_CSR3	0x000c	/* STA MAC address 0 */
+#define RAL_CSR4	0x0010	/* STA MAC address 1 */
+#define RAL_CSR5	0x0014	/* BSSID 0 */
+#define RAL_CSR6	0x0018	/* BSSID 1 */
+#define RAL_CSR7	0x001c	/* Interrupt source */
+#define RAL_CSR8	0x0020	/* Interrupt mask */
+#define RAL_CSR9	0x0024	/* Maximum frame length */
+#define RAL_SECCSR0	0x0028	/* WEP control */
+#define RAL_CSR11	0x002c	/* Back-off control */
+#define RAL_CSR12	0x0030	/* Synchronization configuration 0 */
+#define RAL_CSR13	0x0034	/* Synchronization configuration 1 */
+#define RAL_CSR14	0x0038	/* Synchronization control */
+#define RAL_CSR15	0x003c	/* Synchronization status */
+#define RAL_CSR16	0x0040	/* TSF timer 0 */
+#define RAL_CSR17	0x0044	/* TSF timer 1 */
+#define RAL_CSR18	0x0048	/* IFS timer 0 */
+#define RAL_CSR19	0x004c	/* IFS timer 1 */
+#define RAL_CSR20	0x0050	/* WAKEUP timer */
+#define RAL_CSR21	0x0054	/* EEPROM control */
+#define RAL_CSR22	0x0058	/* CFP control */
+#define RAL_TXCSR0	0x0060	/* TX control */
+#define RAL_TXCSR1	0x0064	/* TX configuration */
+#define RAL_TXCSR2	0x0068	/* TX descriptor configuration */
+#define RAL_TXCSR3	0x006c	/* TX ring base address */
+#define RAL_TXCSR4	0x0070	/* TX ATIM ring base address */
+#define RAL_TXCSR5	0x0074	/* TX PRIO ring base address */
+#define RAL_TXCSR6	0x0078	/* Beacon base address */
+#define RAL_TXCSR7	0x007c	/* AutoResponder control */
+#define RAL_RXCSR0	0x0080	/* RX control */
+#define RAL_RXCSR1	0x0084	/* RX descriptor configuration */
+#define RAL_RXCSR2	0x0088	/* RX ring base address */
+#define RAL_PCICSR	0x008c	/* PCI control */
+#define RAL_RXCSR3	0x0090	/* BBP ID 0 */
+#define RAL_TXCSR9	0x0094	/* OFDM TX BBP */
+#define RAL_ARSP_PLCP_0	0x0098	/* Auto Responder PLCP address */
+#define RAL_ARSP_PLCP_1	0x009c	/* Auto Responder PLCP Basic Rate bit mask */
+#define RAL_CNT0	0x00a0	/* FCS error counter */
+#define RAL_CNT1	0x00ac	/* PLCP error counter */
+#define RAL_CNT2	0x00b0	/* Long error counter */
+#define RAL_CNT3	0x00b8	/* CCA false alarm counter */
+#define RAL_CNT4	0x00bc	/* RX FIFO Overflow counter */
+#define RAL_CNT5	0x00c0	/* Tx FIFO Underrun counter */
+#define RAL_PWRCSR0	0x00c4	/* Power mode configuration */
+#define RAL_PSCSR0	0x00c8	/* Power state transition time */
+#define RAL_PSCSR1	0x00cc	/* Power state transition time */
+#define RAL_PSCSR2	0x00d0	/* Power state transition time */
+#define RAL_PSCSR3	0x00d4	/* Power state transition time */
+#define RAL_PWRCSR1	0x00d8	/* Manual power control/status */
+#define RAL_TIMECSR	0x00dc	/* Timer control */
+#define RAL_MACCSR0	0x00e0	/* MAC configuration */
+#define RAL_MACCSR1	0x00e4	/* MAC configuration */
+#define RAL_RALINKCSR	0x00e8	/* Ralink RX auto-reset BBCR */
+#define RAL_BCNCSR	0x00ec	/* Beacon interval control */
+#define RAL_BBPCSR	0x00f0	/* BBP serial control */
+#define RAL_RFCSR	0x00f4	/* RF serial control */
+#define RAL_LEDCSR	0x00f8	/* LED control */
+#define RAL_SECCSR3	0x00fc	/* XXX not documented */
+#define RAL_DMACSR0	0x0100	/* Current RX ring address */
+#define RAL_DMACSR1	0x0104	/* Current Tx ring address */
+#define RAL_DMACSR2	0x0104	/* Current Priority ring address */
+#define RAL_DMACSR3	0x0104	/* Current ATIM ring address */
+#define RAL_TXACKCSR0	0x0110	/* XXX not documented */
+#define RAL_GPIOCSR	0x0120	/* */
+#define RAL_BBBPPCSR	0x0124	/* BBP Pin Control */
+#define RAL_FIFOCSR0	0x0128	/* TX FIFO pointer */
+#define RAL_FIFOCSR1	0x012c	/* RX FIFO pointer */
+#define RAL_BCNOCSR	0x0130	/* Beacon time offset */
+#define RAL_RLPWCSR	0x0134	/* RX_PE Low Width */
+#define RAL_TESTCSR	0x0138	/* Test Mode Select */
+#define RAL_PLCP1MCSR	0x013c	/* Signal/Service/Length of ACK/CTS @1M */
+#define RAL_PLCP2MCSR	0x0140	/* Signal/Service/Length of ACK/CTS @2M */
+#define RAL_PLCP5p5MCSR	0x0144	/* Signal/Service/Length of ACK/CTS @5.5M */
+#define RAL_PLCP11MCSR	0x0148	/* Signal/Service/Length of ACK/CTS @11M */
+#define RAL_ACKPCTCSR	0x014c	/* ACK/CTS padload consume time */
+#define RAL_ARTCSR1	0x0150	/* ACK/CTS padload consume time */
+#define RAL_ARTCSR2	0x0154	/* ACK/CTS padload consume time */
+#define RAL_SECCSR1	0x0158	/* WEP control */
+#define RAL_BBPCSR1	0x015c	/* BBP TX Configuration */
+
+
+/* possible flags for register RXCSR0 */
+#define RAL_DISABLE_RX		(1 << 0)
+#define RAL_DROP_CRC_ERROR	(1 << 1)
+#define RAL_DROP_PHY_ERROR	(1 << 2)
+#define RAL_DROP_CTL		(1 << 3)
+#define RAL_DROP_NOT_TO_ME	(1 << 4)
+#define RAL_DROP_TODS		(1 << 5)
+#define RAL_DROP_VERSION_ERROR	(1 << 6)
+
+/* possible flags for register CSR1 */
+#define RAL_RESET_ASIC	(1 << 0)
+#define RAL_RESET_BBP	(1 << 1)
+#define RAL_HOST_READY	(1 << 2)
+
+/* possible flags for register CSR14 */
+#define RAL_ENABLE_TSF			(1 << 0)
+#define RAL_ENABLE_TSF_SYNC(x)		(((x) & 0x3) << 1)
+#define RAL_ENABLE_TBCN			(1 << 3)
+#define RAL_ENABLE_BEACON_GENERATOR	(1 << 6)
+
+/* possible flags for register CSR21 */
+#define RAL_EEPROM_C		(1 << 1)
+#define RAL_EEPROM_S		(1 << 2)
+#define RAL_EEPROM_D		(1 << 3)
+#define RAL_EEPROM_Q		(1 << 4)
+#define RAL_EEPROM_93C46	(1 << 5)
+
+#define RAL_EEPROM_SHIFT_D	3
+#define RAL_EEPROM_SHIFT_Q	4
+
+/* possible flags for register TXCSR0 */
+#define RAL_KICK_TX	(1 << 0)
+#define RAL_KICK_ATIM	(1 << 1)
+#define RAL_KICK_PRIO	(1 << 2)
+#define RAL_ABORT_TX	(1 << 3)
+
+/* possible flags for register SECCSR0 */
+#define RAL_KICK_DECRYPT	(1 << 0)
+
+/* possible flags for register SECCSR1 */
+#define RAL_KICK_ENCRYPT	(1 << 0)
+
+/* possible flags for register CSR7 */
+#define RAL_BEACON_EXPIRE	0x00000001
+#define RAL_WAKEUP_EXPIRE	0x00000002
+#define RAL_ATIM_EXPIRE		0x00000004
+#define RAL_TX_DONE		0x00000008
+#define RAL_ATIM_DONE		0x00000010
+#define RAL_PRIO_DONE		0x00000020
+#define RAL_RX_DONE		0x00000040
+#define RAL_DECRYPTION_DONE	0x00000080
+#define RAL_ENCRYPTION_DONE	0x00000100
+
+#define RAL_INTR_MASK							\
+	(~(RAL_BEACON_EXPIRE | RAL_WAKEUP_EXPIRE | RAL_TX_DONE |	\
+	   RAL_PRIO_DONE | RAL_RX_DONE | RAL_DECRYPTION_DONE |		\
+	   RAL_ENCRYPTION_DONE))
+
+/* Tx descriptor */
+struct ral_tx_desc {
+	uint32_t	flags;
+#define RAL_TX_BUSY		(1 << 0)
+#define RAL_TX_VALID		(1 << 1)
+
+#define RAL_TX_RESULT_MASK	0x0000001c
+#define RAL_TX_SUCCESS		(0 << 2)
+#define RAL_TX_SUCCESS_RETRY	(1 << 2)
+#define RAL_TX_FAIL_RETRY	(2 << 2)
+#define RAL_TX_FAIL_INVALID	(3 << 2)
+#define RAL_TX_FAIL_OTHER	(4 << 2)
+
+#define RAL_TX_MORE_FRAG	(1 << 8)
+#define RAL_TX_ACK		(1 << 9)
+#define RAL_TX_TIMESTAMP	(1 << 10)
+#define RAL_TX_OFDM		(1 << 11)
+#define RAL_TX_CIPHER_BUSY	(1 << 12)
+
+#define RAL_TX_IFS_MASK		0x00006000
+#define RAL_TX_IFS_BACKOFF	(0 << 13)
+#define RAL_TX_IFS_SIFS		(1 << 13)
+#define RAL_TX_IFS_NEWBACKOFF	(2 << 13)
+#define RAL_TX_IFS_NONE		(3 << 13)
+
+#define RAL_TX_LONG_RETRY	(1 << 15)
+
+#define RAL_TX_CIPHER_MASK	0xe0000000
+#define RAL_TX_CIPHER_NONE	(0 << 29)
+#define RAL_TX_CIPHER_WEP40	(1 << 29)
+#define RAL_TX_CIPHER_WEP104	(2 << 29)
+#define RAL_TX_CIPHER_TKIP	(3 << 29)
+#define RAL_TX_CIPHER_AES	(4 << 29)
+
+	uint32_t	physaddr;
+	uint16_t	wme;
+#define RAL_LOGCWMAX(x)		(((x) & 0xf) << 12)
+#define RAL_LOGCWMIN(x)		(((x) & 0xf) << 8)
+#define RAL_AIFSN(x)		(((x) & 0x3) << 6)
+#define RAL_IVOFFSET(x)		(((x) & 0x3f))
+
+	uint16_t	reserved1;
+	uint8_t		plcp_signal;
+	uint8_t		plcp_service;
+#define RAL_PLCP_LENGEXT	0x80
+
+	uint16_t	plcp_length;
+	uint32_t	iv;
+	uint32_t	eiv;
+	uint8_t		key[IEEE80211_KEYBUF_SIZE];
+	uint32_t	reserved2[2];
+} __packed;
+
+/* Rx descriptor */
+struct ral_rx_desc {
+	uint32_t	flags;
+#define RAL_RX_BUSY		(1 << 0)
+#define RAL_RX_CRC_ERROR	(1 << 5)
+#define RAL_RX_PHY_ERROR	(1 << 7)
+#define RAL_RX_CIPHER_BUSY	(1 << 8)
+#define RAL_RX_ICV_ERROR	(1 << 9)
+
+#define RAL_RX_CIPHER_MASK	0xe0000000
+#define RAL_RX_CIPHER_NONE	(0 << 29)
+#define RAL_RX_CIPHER_WEP40	(1 << 29)
+#define RAL_RX_CIPHER_WEP104	(2 << 29)
+#define RAL_RX_CIPHER_TKIP	(3 << 29)
+#define RAL_RX_CIPHER_AES	(4 << 29)
+
+	uint32_t	physaddr;
+	uint8_t		rate;
+	uint8_t		rssi;
+	uint8_t		ta[IEEE80211_ADDR_LEN];
+	uint32_t	iv;
+	uint32_t	eiv;
+	uint8_t		key[IEEE80211_KEYBUF_SIZE];
+	uint32_t	reserved[2];
+} __packed;
+
+#define RAL_RF1	0
+#define RAL_RF2	2
+#define RAL_RF3	1
+#define RAL_RF4	3
+
+#define RAL_RF1_AUTOTUNE	0x08000
+#define RAL_RF3_AUTOTUNE	0x00040
+
+#define RAL_BBP_BUSY	(1 << 15)
+#define RAL_BBP_WRITE	(1 << 16)
+#define RAL_RF_20BIT	(20 << 24)
+#define RAL_RF_BUSY	(1 << 31)
+
+#define RAL_RF_2522	0x00
+#define RAL_RF_2523	0x01
+#define RAL_RF_2524	0x02
+#define RAL_RF_2525	0x03
+#define RAL_RF_2525E	0x04
+#define RAL_RF_2526	0x05
+/* dual-band RF */
+#define RAL_RF_5222	0x10
+
+#define RAL_BBP_VERSION	0
+#define RAL_BBP_TX	2
+#define RAL_BBP_RX	14
+
+#define RAL_BBP_ANTA		0x00
+#define RAL_BBP_DIVERSITY	0x01
+#define RAL_BBP_ANTB		0x02
+#define RAL_BBP_ANTMASK		0x03
+#define RAL_BBP_FLIPIQ		0x04
+
+#define RAL_LED_MODE_DEFAULT		0
+#define RAL_LED_MODE_TXRX_ACTIVITY	1
+#define RAL_LED_MODE_SINGLE		2
+#define RAL_LED_MODE_ASUS		3
+
+#define RAL_JAPAN_FILTER	0x8
+
+#define RAL_EEPROM_DELAY	1	/* minimum hold time (microsecond) */
+
+#define RAL_EEPROM_CONFIG0	16
+#define RAL_EEPROM_BBP_BASE	19
+#define RAL_EEPROM_TXPOWER	35
+
+/*
+ * control and status registers access macros
+ */
+#define RAL_READ(sc, reg)						\
+	bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (reg))
+
+#define RAL_WRITE(sc, reg, val)						\
+	bus_space_write_4((sc)->sc_st, (sc)->sc_sh, (reg), (val))
+
+/*
+ * EEPROM access macro
+ */
+#define RAL_EEPROM_CTL(sc, val) do {					\
+	RAL_WRITE((sc), RAL_CSR21, (val));				\
+	DELAY(RAL_EEPROM_DELAY);					\
+} while (/* CONSTCOND */0)
diff --git a/sys/dev/ral/if_ralvar.h b/sys/dev/ral/if_ralvar.h
new file mode 100644
index 0000000..c05a8b4
--- /dev/null
+++ b/sys/dev/ral/if_ralvar.h
@@ -0,0 +1,175 @@
+/*	$FreeBSD$	*/
+
+/*-
+ * Copyright (c) 2005
+ *	Damien Bergamini <damien.bergamini@free.fr>
+ *
+ * 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.
+ */
+
+struct ral_rx_radiotap_header {
+	struct ieee80211_radiotap_header wr_ihdr;
+	uint64_t	wr_tsf;
+	uint8_t		wr_flags;
+	uint16_t	wr_chan_freq;
+	uint16_t	wr_chan_flags;
+	uint8_t		wr_antenna;
+	uint8_t		wr_antsignal;
+};
+
+#define RAL_RX_RADIOTAP_PRESENT						\
+	((1 << IEEE80211_RADIOTAP_TSFT) |				\
+	 (1 << IEEE80211_RADIOTAP_FLAGS) |				\
+	 (1 << IEEE80211_RADIOTAP_CHANNEL) |				\
+	 (1 << IEEE80211_RADIOTAP_ANTENNA) |				\
+	 (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL))
+
+struct ral_tx_radiotap_header {
+	struct ieee80211_radiotap_header wt_ihdr;
+	uint8_t		wt_flags;
+	uint8_t		wt_rate;
+	uint16_t	wt_chan_freq;
+	uint16_t	wt_chan_flags;
+	uint8_t		wt_antenna;
+};
+
+#define RAL_TX_RADIOTAP_PRESENT						\
+	((1 << IEEE80211_RADIOTAP_FLAGS) |				\
+	 (1 << IEEE80211_RADIOTAP_RATE) |				\
+	 (1 << IEEE80211_RADIOTAP_CHANNEL) |				\
+	 (1 << IEEE80211_RADIOTAP_ANTENNA))
+
+struct ral_tx_data {
+	bus_dmamap_t			map;
+	struct mbuf			*m;
+	struct ieee80211_node		*ni;
+	struct ral_rssdesc		id;
+};
+
+struct ral_tx_ring {
+	bus_dma_tag_t		desc_dmat;
+	bus_dma_tag_t		data_dmat;
+	bus_dmamap_t		desc_map;
+	bus_addr_t		physaddr;
+	struct ral_tx_desc	*desc;
+	struct ral_tx_data	*data;
+	int			count;
+	int			queued;
+	int			cur;
+	int			next;
+	int			cur_encrypt;
+	int			next_encrypt;
+};
+
+struct ral_rx_data {
+	bus_dmamap_t	map;
+	struct mbuf	*m;
+	int		drop;
+};
+
+struct ral_rx_ring {
+	bus_dma_tag_t		desc_dmat;
+	bus_dma_tag_t		data_dmat;
+	bus_dmamap_t		desc_map;
+	bus_addr_t		physaddr;
+	struct ral_rx_desc	*desc;
+	struct ral_rx_data	*data;
+	int			count;
+	int			cur;
+	int			next;
+	int			cur_decrypt;
+};
+
+struct ral_node {
+	struct ieee80211_node	ni;
+	struct ral_rssadapt	rssadapt;
+};
+
+struct ral_softc {
+	struct arpcom			sc_arp;
+	struct ieee80211com		sc_ic;
+	int				(*sc_newstate)(struct ieee80211com *,
+					    enum ieee80211_state, int);
+	device_t			sc_dev;
+
+	struct mtx			sc_mtx;
+
+	struct callout			scan_ch;
+	struct callout			rssadapt_ch;
+
+	int				irq_rid;
+	int				mem_rid;
+	struct resource			*irq;
+	struct resource			*mem;
+	bus_space_tag_t			sc_st;
+	bus_space_handle_t		sc_sh;
+	void				*sc_ih;
+
+	int				sc_tx_timer;
+
+	uint32_t			asic_rev;
+	uint32_t			eeprom_rev;
+	uint8_t				rf_rev;
+
+	struct ral_tx_ring		txq;
+	struct ral_tx_ring		prioq;
+	struct ral_tx_ring		atimq;
+	struct ral_tx_ring		bcnq;
+	struct ral_rx_ring		rxq;
+
+	struct ieee80211_beacon_offsets	sc_bo;
+
+	uint32_t			rf_regs[4];
+	uint8_t				txpow[14];
+
+	struct {
+		uint8_t		reg;
+		uint8_t		val;
+	}				bbp_prom[16];
+
+	int				led_mode;
+	int				hw_radio;
+	int				rx_ant;
+	int				tx_ant;
+	int				nb_ant;
+
+	int				dwelltime;
+
+	struct bpf_if			*sc_drvbpf;
+
+	union {
+		struct ral_rx_radiotap_header th;
+		uint8_t	pad[64];
+	}				sc_rxtapu;
+#define sc_rxtap	sc_rxtapu.th
+	int				sc_rxtap_len;
+
+	union {
+		struct ral_tx_radiotap_header th;
+		uint8_t	pad[64];
+	}				sc_txtapu;
+#define sc_txtap	sc_txtapu.th
+	int				sc_txtap_len;
+};
+
+extern devclass_t ral_devclass;
+
+int	ral_attach(device_t);
+int	ral_detach(device_t);
+void	ral_shutdown(device_t);
+int	ral_alloc(device_t, int);
+void	ral_free(device_t);
+void	ral_stop(void *);
+
+#define RAL_LOCK(sc)	mtx_lock(&(sc)->sc_mtx)
+#define RAL_UNLOCK(sc)	mtx_unlock(&(sc)->sc_mtx)