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if_atu.c revision 1.24.6.4
      1 /*	$NetBSD: if_atu.c,v 1.24.6.4 2007/06/18 13:38:14 itohy Exp $ */
      2 /*	$OpenBSD: if_atu.c,v 1.48 2004/12/30 01:53:21 dlg Exp $ */
      3 /*
      4  * Copyright (c) 2003, 2004
      5  *	Daan Vreeken <Danovitsch (at) Vitsch.net>.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Daan Vreeken.
     18  * 4. Neither the name of the author nor the names of any co-contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY Daan Vreeken AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL Daan Vreeken OR THE VOICES IN HIS HEAD
     26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     32  * THE POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 /*
     36  * Atmel AT76c503 / AT76c503a / AT76c505 / AT76c505a  USB WLAN driver
     37  * version 0.5 - 2004-08-03
     38  *
     39  * Originally written by Daan Vreeken <Danovitsch @ Vitsch . net>
     40  *  http://vitsch.net/bsd/atuwi
     41  *
     42  * Contributed to by :
     43  *  Chris Whitehouse, Alistair Phillips, Peter Pilka, Martijn van Buul,
     44  *  Suihong Liang, Arjan van Leeuwen, Stuart Walsh
     45  *
     46  * Ported to OpenBSD by Theo de Raadt and David Gwynne.
     47  * Ported to NetBSD by Jesse Off
     48  */
     49 
     50 #include <sys/cdefs.h>
     51 __KERNEL_RCSID(0, "$NetBSD: if_atu.c,v 1.24.6.4 2007/06/18 13:38:14 itohy Exp $");
     52 
     53 #include "bpfilter.h"
     54 
     55 #include <sys/param.h>
     56 #include <sys/sockio.h>
     57 #include <sys/mbuf.h>
     58 #include <sys/kernel.h>
     59 #include <sys/socket.h>
     60 #include <sys/systm.h>
     61 #include <sys/malloc.h>
     62 #include <sys/kthread.h>
     63 #include <sys/queue.h>
     64 #include <sys/device.h>
     65 
     66 #include <machine/bus.h>
     67 
     68 #include <dev/usb/usb.h>
     69 #include <dev/usb/usbdi.h>
     70 #include <dev/usb/usbdi_util.h>
     71 #include <dev/usb/usbdivar.h>
     72 
     73 #include <dev/usb/usbdevs.h>
     74 #include <dev/usb/usb_ethersubr.h>
     75 
     76 #include <dev/microcode/atmel/atmel_intersil_fw.h>
     77 #include <dev/microcode/atmel/atmel_rfmd2958-smc_fw.h>
     78 #include <dev/microcode/atmel/atmel_rfmd2958_fw.h>
     79 #include <dev/microcode/atmel/atmel_rfmd_fw.h>
     80 
     81 #if NBPFILTER > 0
     82 #include <net/bpf.h>
     83 #include <net/bpfdesc.h>
     84 #endif
     85 
     86 #include <net/if.h>
     87 #include <net/if_dl.h>
     88 #include <net/if_media.h>
     89 #include <net/if_ether.h>
     90 
     91 #ifdef INET
     92 #include <netinet/in.h>
     93 #include <netinet/if_ether.h>
     94 #endif
     95 
     96 #include <net80211/ieee80211_var.h>
     97 #include <net80211/ieee80211_radiotap.h>
     98 
     99 #ifdef USB_DEBUG
    100 #define ATU_DEBUG
    101 #endif
    102 
    103 #include <dev/usb/if_atureg.h>
    104 
    105 #ifdef ATU_DEBUG
    106 #define DPRINTF(x)	do { if (atudebug) printf x; } while (0)
    107 #define DPRINTFN(n,x)	do { if (atudebug>(n)) printf x; } while (0)
    108 int atudebug = 1;
    109 #else
    110 #define DPRINTF(x)
    111 #define DPRINTFN(n,x)
    112 #endif
    113 
    114 /*
    115  * Various supported device vendors/products/radio type.
    116  */
    117 struct atu_type atu_devs[] = {
    118 	{ USB_VENDOR_ATMEL,	USB_PRODUCT_ATMEL_BW002,
    119 	  RadioRFMD,		ATU_NO_QUIRK },
    120 	{ USB_VENDOR_BELKIN,	USB_PRODUCT_BELKIN_F5D6050,
    121 	  RadioRFMD,		ATU_NO_QUIRK },
    122 	{ USB_VENDOR_ATMEL,	USB_PRODUCT_ATMEL_AT76C503A,
    123 	  RadioIntersil,	ATU_NO_QUIRK },
    124 	{ USB_VENDOR_LEXAR,	USB_PRODUCT_LEXAR_2662WAR,
    125 	  RadioRFMD,		ATU_NO_QUIRK },
    126 	/* Belkin F5D6050 */
    127 	{ USB_VENDOR_SMC3,	USB_PRODUCT_SMC3_2662WUSB,
    128 	  RadioRFMD,		ATU_NO_QUIRK },
    129 	{ USB_VENDOR_LINKSYS2,	USB_PRODUCT_LINKSYS2_WUSB11,
    130 	  RadioRFMD,		ATU_NO_QUIRK },
    131 	{ USB_VENDOR_LINKSYS3,	USB_PRODUCT_LINKSYS3_WUSB11V28,
    132 	  RadioRFMD2958,	ATU_NO_QUIRK },
    133 	{ USB_VENDOR_NETGEAR2,	USB_PRODUCT_NETGEAR2_MA101B,
    134 	  RadioRFMD,		ATU_NO_QUIRK },
    135 	{ USB_VENDOR_ACERP,	USB_PRODUCT_ACERP_AWL400,
    136 	  RadioRFMD,		ATU_NO_QUIRK },
    137 	{ USB_VENDOR_ATMEL,	USB_PRODUCT_ATMEL_WL1130,
    138 	  RadioRFMD2958,	ATU_NO_QUIRK },
    139 	{ USB_VENDOR_LINKSYS3,	USB_PRODUCT_LINKSYS3_WUSB11V28,
    140 	  RadioRFMD2958,	ATU_NO_QUIRK },
    141 	{ USB_VENDOR_AINCOMM,	USB_PRODUCT_AINCOMM_AWU2000B,
    142 	  RadioRFMD2958,	ATU_NO_QUIRK },
    143 	/* SMC2662 V.4 */
    144 	{ USB_VENDOR_ATMEL,	USB_PRODUCT_ATMEL_AT76C505A,
    145 	  RadioRFMD2958_SMC,	ATU_QUIRK_NO_REMAP | ATU_QUIRK_FW_DELAY },
    146 	{ USB_VENDOR_ACERP,	USB_PRODUCT_ACERP_AWL300,
    147 	  RadioIntersil,	ATU_NO_QUIRK },
    148 	{ USB_VENDOR_OQO,	USB_PRODUCT_OQO_WIFI01,
    149 	  RadioRFMD2958_SMC,	ATU_QUIRK_NO_REMAP | ATU_QUIRK_FW_DELAY },
    150 	{ USB_VENDOR_SMC3,	USB_PRODUCT_SMC3_2662WV1,
    151 	  RadioIntersil,	ATU_NO_QUIRK },
    152 };
    153 
    154 struct atu_radfirm {
    155 	enum	atu_radio_type atur_type;
    156 	unsigned char	*atur_internal;
    157 	size_t		atur_internal_sz;
    158 	unsigned char	*atur_external;
    159 	size_t		atur_external_sz;
    160 } atu_radfirm[] = {
    161 	{ RadioRFMD,
    162 	  atmel_fw_rfmd_int,		sizeof(atmel_fw_rfmd_int),
    163 	  atmel_fw_rfmd_ext,		sizeof(atmel_fw_rfmd_ext) },
    164 	{ RadioRFMD2958,
    165 	  atmel_fw_rfmd2958_int,	sizeof(atmel_fw_rfmd2958_int),
    166 	  atmel_fw_rfmd2958_ext,	sizeof(atmel_fw_rfmd2958_ext) },
    167 	{ RadioRFMD2958_SMC,
    168 	  atmel_fw_rfmd2958_smc_int,	sizeof(atmel_fw_rfmd2958_smc_int),
    169 	  atmel_fw_rfmd2958_smc_ext,	sizeof(atmel_fw_rfmd2958_smc_ext) },
    170 	{ RadioIntersil,
    171 	  atmel_fw_intersil_int,	sizeof(atmel_fw_intersil_int),
    172 	  atmel_fw_intersil_ext,	sizeof(atmel_fw_intersil_ext) }
    173 };
    174 
    175 void	atu_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
    176 void	atu_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
    177 void	atu_start(struct ifnet *);
    178 int	atu_ioctl(struct ifnet *, u_long, usb_ioctlarg_t);
    179 int	atu_init(struct ifnet *);
    180 void	atu_stop(struct ifnet *, int);
    181 void	atu_watchdog(struct ifnet *);
    182 usbd_status atu_usb_request(struct atu_softc *sc, u_int8_t type,
    183 	    u_int8_t request, u_int16_t value, u_int16_t index,
    184 	    u_int16_t length, u_int8_t *data);
    185 int	atu_send_command(struct atu_softc *sc, u_int8_t *command, int size);
    186 int	atu_get_cmd_status(struct atu_softc *sc, u_int8_t cmd,
    187 	    u_int8_t *status);
    188 int	atu_wait_completion(struct atu_softc *sc, u_int8_t cmd,
    189 	    u_int8_t *status);
    190 int	atu_send_mib(struct atu_softc *sc, u_int8_t type,
    191 	    u_int8_t size, u_int8_t index, void *data);
    192 int	atu_get_mib(struct atu_softc *sc, u_int8_t type,
    193 	    u_int8_t size, u_int8_t index, u_int8_t *buf);
    194 #if 0
    195 int	atu_start_ibss(struct atu_softc *sc);
    196 #endif
    197 int	atu_start_scan(struct atu_softc *sc);
    198 int	atu_switch_radio(struct atu_softc *sc, int state);
    199 int	atu_initial_config(struct atu_softc *sc);
    200 int	atu_join(struct atu_softc *sc, struct ieee80211_node *node);
    201 int8_t	atu_get_dfu_state(struct atu_softc *sc);
    202 u_int8_t atu_get_opmode(struct atu_softc *sc, u_int8_t *mode);
    203 void	atu_internal_firmware(struct device *);
    204 void	atu_external_firmware(struct device *);
    205 int	atu_get_card_config(struct atu_softc *sc);
    206 int	atu_media_change(struct ifnet *ifp);
    207 void	atu_media_status(struct ifnet *ifp, struct ifmediareq *req);
    208 
    209 #ifdef ATU_DEBUG
    210 void	atu_debug_print(struct atu_softc *sc);
    211 #endif
    212 
    213 void atu_task(void *);
    214 int atu_newstate(struct ieee80211com *, enum ieee80211_state, int);
    215 int atu_tx_start(struct atu_softc *, struct ieee80211_node *,
    216     struct ue_chain *, struct mbuf *);
    217 void atu_complete_attach(struct atu_softc *);
    218 u_int8_t atu_calculate_padding(int);
    219 
    220 USB_DECLARE_DRIVER(atu);
    221 
    222 usbd_status
    223 atu_usb_request(struct atu_softc *sc, u_int8_t type,
    224     u_int8_t request, u_int16_t value, u_int16_t index, u_int16_t length,
    225     u_int8_t *data)
    226 {
    227 	usb_device_request_t	req;
    228 	usbd_xfer_handle	xfer;
    229 	usbd_status		err;
    230 	int			total_len = 0, s;
    231 
    232 	req.bmRequestType = type;
    233 	req.bRequest = request;
    234 	USETW(req.wValue, value);
    235 	USETW(req.wIndex, index);
    236 	USETW(req.wLength, length);
    237 
    238 #ifdef ATU_DEBUG
    239 	if (atudebug) {
    240 		DPRINTFN(20, ("%s: req=%02x val=%02x ind=%02x "
    241 		    "len=%02x\n", USBDEVNAME(sc->atu_dev), request,
    242 		    value, index, length));
    243 	}
    244 #endif /* ATU_DEBUG */
    245 
    246 	s = splnet();
    247 
    248 	xfer = usbd_alloc_default_xfer(sc->atu_udev);
    249 	usbd_setup_default_xfer(xfer, sc->atu_udev, 0, 500000, &req, data,
    250 	    length, USBD_SHORT_XFER_OK, 0);
    251 
    252 	err = usbd_sync_transfer(xfer);
    253 
    254 	usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
    255 
    256 #ifdef ATU_DEBUG
    257 	if (atudebug) {
    258 		if (type & UT_READ) {
    259 			DPRINTFN(20, ("%s: transfered 0x%x bytes in\n",
    260 			    USBDEVNAME(sc->atu_dev), total_len));
    261 		} else {
    262 			if (total_len != length)
    263 				DPRINTF(("%s: wrote only %x bytes\n",
    264 				    USBDEVNAME(sc->atu_dev), total_len));
    265 		}
    266 	}
    267 #endif /* ATU_DEBUG */
    268 
    269 	usbd_free_xfer(xfer);
    270 
    271 	splx(s);
    272 	return(err);
    273 }
    274 
    275 int
    276 atu_send_command(struct atu_softc *sc, u_int8_t *command, int size)
    277 {
    278 	return atu_usb_request(sc, UT_WRITE_VENDOR_DEVICE, 0x0e, 0x0000,
    279 	    0x0000, size, command);
    280 }
    281 
    282 int
    283 atu_get_cmd_status(struct atu_softc *sc, u_int8_t cmd, u_int8_t *status)
    284 {
    285 	/*
    286 	 * all other drivers (including Windoze) request 40 bytes of status
    287 	 * and get a short-xfer of just 6 bytes. we can save 34 bytes of
    288 	 * buffer if we just request those 6 bytes in the first place :)
    289 	 */
    290 	/*
    291 	return atu_usb_request(sc, UT_READ_VENDOR_INTERFACE, 0x22, cmd,
    292 	    0x0000, 40, status);
    293 	*/
    294 	return atu_usb_request(sc, UT_READ_VENDOR_INTERFACE, 0x22, cmd,
    295 	    0x0000, 6, status);
    296 }
    297 
    298 int
    299 atu_wait_completion(struct atu_softc *sc, u_int8_t cmd, u_int8_t *status)
    300 {
    301 	int			idle_count = 0, err;
    302 	u_int8_t		statusreq[6];
    303 
    304 	DPRINTFN(15, ("%s: wait-completion: cmd=%02x\n",
    305 	    USBDEVNAME(sc->atu_dev), cmd));
    306 
    307 	while (1) {
    308 		err = atu_get_cmd_status(sc, cmd, statusreq);
    309 		if (err)
    310 			return err;
    311 
    312 #ifdef ATU_DEBUG
    313 		if (atudebug) {
    314 			DPRINTFN(20, ("%s: status=%s cmd=%02x\n",
    315 			    USBDEVNAME(sc->atu_dev),
    316 			ether_sprintf(statusreq), cmd));
    317 		}
    318 #endif /* ATU_DEBUG */
    319 
    320 		/*
    321 		 * during normal operations waiting on STATUS_IDLE
    322 		 * will never happen more than once
    323 		 */
    324 		if ((statusreq[5] == STATUS_IDLE) && (idle_count++ > 20)) {
    325 			DPRINTF(("%s: idle_count > 20!\n",
    326 			    USBDEVNAME(sc->atu_dev)));
    327 			return 0;
    328 		}
    329 
    330 		if ((statusreq[5] != STATUS_IN_PROGRESS) &&
    331 		    (statusreq[5] != STATUS_IDLE)) {
    332 			if (status != NULL)
    333 				*status = statusreq[5];
    334 			return 0;
    335 		}
    336 		usbd_delay_ms(sc->atu_udev, 25);
    337 	}
    338 }
    339 
    340 int
    341 atu_send_mib(struct atu_softc *sc, u_int8_t type, u_int8_t size,
    342     u_int8_t index, void *data)
    343 {
    344 	int				err;
    345 	struct atu_cmd_set_mib		request;
    346 
    347 	/*
    348 	 * We don't construct a MIB packet first and then memcpy it into an
    349 	 * Atmel-command-packet, we just construct it the right way at once :)
    350 	 */
    351 
    352 	memset(&request, 0, sizeof(request));
    353 
    354 	request.AtCmd = CMD_SET_MIB;
    355 	USETW(request.AtSize, size + 4);
    356 
    357 	request.MIBType = type;
    358 	request.MIBSize = size;
    359 	request.MIBIndex = index;
    360 	request.MIBReserved = 0;
    361 
    362 	/*
    363 	 * For 1 and 2 byte requests we assume a direct value,
    364 	 * everything bigger than 2 bytes we assume a pointer to the data
    365 	 */
    366 	switch (size) {
    367 	case 0:
    368 		break;
    369 	case 1:
    370 		request.data[0]=(long)data & 0x000000ff;
    371 		break;
    372 	case 2:
    373 		request.data[0]=(long)data & 0x000000ff;
    374 		request.data[1]=(long)data >> 8;
    375 		break;
    376 	default:
    377 		memcpy(request.data, data, size);
    378 		break;
    379 	}
    380 
    381 	err = atu_usb_request(sc, UT_WRITE_VENDOR_DEVICE, 0x0e, 0x0000,
    382 	    0x0000, size+8, (uByte *)&request);
    383 	if (err)
    384 		return (err);
    385 
    386 	DPRINTFN(15, ("%s: sendmib : waitcompletion...\n",
    387 	    USBDEVNAME(sc->atu_dev)));
    388 	return atu_wait_completion(sc, CMD_SET_MIB, NULL);
    389 }
    390 
    391 int
    392 atu_get_mib(struct atu_softc *sc, u_int8_t type, u_int8_t size,
    393     u_int8_t index, u_int8_t *buf)
    394 {
    395 
    396 	/* linux/at76c503.c - 478 */
    397 	return atu_usb_request(sc, UT_READ_VENDOR_INTERFACE, 0x033,
    398 	    type << 8, index, size, buf);
    399 }
    400 
    401 #if 0
    402 int
    403 atu_start_ibss(struct atu_softc *sc)
    404 {
    405 	struct ieee80211com		*ic = &sc->sc_ic;
    406 	int				err;
    407 	struct atu_cmd_start_ibss	Request;
    408 
    409 	Request.Cmd = CMD_START_IBSS;
    410 	Request.Reserved = 0;
    411 	Request.Size = sizeof(Request) - 4;
    412 
    413 	memset(Request.BSSID, 0x00, sizeof(Request.BSSID));
    414 	memset(Request.SSID, 0x00, sizeof(Request.SSID));
    415 	memcpy(Request.SSID, ic->ic_des_ssid, ic->ic_des_ssidlen);
    416 	Request.SSIDSize = ic->ic_des_ssidlen;
    417 	if (sc->atu_desired_channel != IEEE80211_CHAN_ANY)
    418 		Request.Channel = (u_int8_t)sc->atu_desired_channel;
    419 	else
    420 		Request.Channel = ATU_DEFAULT_CHANNEL;
    421 	Request.BSSType = AD_HOC_MODE;
    422 	memset(Request.Res, 0x00, sizeof(Request.Res));
    423 
    424 	/* Write config to adapter */
    425 	err = atu_send_command(sc, (u_int8_t *)&Request, sizeof(Request));
    426 	if (err) {
    427 		DPRINTF(("%s: start ibss failed!\n",
    428 		    USBDEVNAME(sc->atu_dev)));
    429 		return err;
    430 	}
    431 
    432 	/* Wait for the adapter to do it's thing */
    433 	err = atu_wait_completion(sc, CMD_START_IBSS, NULL);
    434 	if (err) {
    435 		DPRINTF(("%s: error waiting for start_ibss\n",
    436 		    USBDEVNAME(sc->atu_dev)));
    437 		return err;
    438 	}
    439 
    440 	/* Get the current BSSID */
    441 	err = atu_get_mib(sc, MIB_MAC_MGMT__CURRENT_BSSID, sc->atu_bssid);
    442 	if (err) {
    443 		DPRINTF(("%s: could not get BSSID!\n",
    444 		    USBDEVNAME(sc->atu_dev)));
    445 		return err;
    446 	}
    447 
    448 	DPRINTF(("%s: started a new IBSS (BSSID=%s)\n",
    449 	    USBDEVNAME(sc->atu_dev), ether_sprintf(sc->atu_bssid)));
    450 	return 0;
    451 }
    452 #endif
    453 
    454 int
    455 atu_start_scan(struct atu_softc *sc)
    456 {
    457 	struct ieee80211com		*ic = &sc->sc_ic;
    458 	struct atu_cmd_do_scan		Scan;
    459 	usbd_status			err;
    460 	int				Cnt;
    461 
    462 	memset(&Scan, 0, sizeof(Scan));
    463 
    464 	Scan.Cmd = CMD_START_SCAN;
    465 	Scan.Reserved = 0;
    466 	USETW(Scan.Size, sizeof(Scan) - 4);
    467 
    468 	/* use the broadcast BSSID (in active scan) */
    469 	for (Cnt=0; Cnt<6; Cnt++)
    470 		Scan.BSSID[Cnt] = 0xff;
    471 
    472 	memset(Scan.SSID, 0x00, sizeof(Scan.SSID));
    473 	memcpy(Scan.SSID, ic->ic_des_essid, ic->ic_des_esslen);
    474 	Scan.SSID_Len = ic->ic_des_esslen;
    475 
    476 	/* default values for scan */
    477 	Scan.ScanType = ATU_SCAN_ACTIVE;
    478 	if (sc->atu_desired_channel != IEEE80211_CHAN_ANY)
    479 		Scan.Channel = (u_int8_t)sc->atu_desired_channel;
    480 	else
    481 		Scan.Channel = sc->atu_channel;
    482 
    483 	ic->ic_curchan = &ic->ic_channels[Scan.Channel];
    484 
    485 	/* we like scans to be quick :) */
    486 	/* the time we wait before sending probe's */
    487 	USETW(Scan.ProbeDelay, 0);
    488 	/* the time we stay on one channel */
    489 	USETW(Scan.MinChannelTime, 100);
    490 	USETW(Scan.MaxChannelTime, 200);
    491 	/* wether or not we scan all channels */
    492 	Scan.InternationalScan = 0xc1;
    493 
    494 #ifdef ATU_DEBUG
    495 	if (atudebug) {
    496 		DPRINTFN(20, ("%s: scan cmd len=%02lx\n",
    497 		    USBDEVNAME(sc->atu_dev), (unsigned long)sizeof(Scan)));
    498 	}
    499 #endif /* ATU_DEBUG */
    500 
    501 	/* Write config to adapter */
    502 	err = atu_send_command(sc, (u_int8_t *)&Scan, sizeof(Scan));
    503 	if (err)
    504 		return err;
    505 
    506 	/*
    507 	 * We don't wait for the command to finish... the mgmt-thread will do
    508 	 * that for us
    509 	 */
    510 	/*
    511 	err = atu_wait_completion(sc, CMD_START_SCAN, NULL);
    512 	if (err)
    513 		return err;
    514 	*/
    515 	return 0;
    516 }
    517 
    518 int
    519 atu_switch_radio(struct atu_softc *sc, int state)
    520 {
    521 	usbd_status		err;
    522 	struct atu_cmd		CmdRadio;
    523 
    524 	if (sc->atu_radio == RadioIntersil) {
    525 		/*
    526 		 * Intersil doesn't seem to need/support switching the radio
    527 		 * on/off
    528 		 */
    529 		return 0;
    530 	}
    531 
    532 	memset(&CmdRadio, 0, sizeof(CmdRadio));
    533 	CmdRadio.Cmd = CMD_RADIO_ON;
    534 
    535 	if (sc->atu_radio_on != state) {
    536 		if (state == 0)
    537 			CmdRadio.Cmd = CMD_RADIO_OFF;
    538 
    539 		err = atu_send_command(sc, (u_int8_t *)&CmdRadio,
    540 		    sizeof(CmdRadio));
    541 		if (err)
    542 			return err;
    543 
    544 		err = atu_wait_completion(sc, CmdRadio.Cmd, NULL);
    545 		if (err)
    546 			return err;
    547 
    548 		DPRINTFN(10, ("%s: radio turned %s\n",
    549 		    USBDEVNAME(sc->atu_dev), state ? "on" : "off"));
    550 		sc->atu_radio_on = state;
    551 	}
    552 	return 0;
    553 }
    554 
    555 int
    556 atu_initial_config(struct atu_softc *sc)
    557 {
    558 	struct ieee80211com		*ic = &sc->sc_ic;
    559 	u_int32_t			i;
    560 	usbd_status			err;
    561 /*	u_int8_t			rates[4] = {0x82, 0x84, 0x8B, 0x96};*/
    562 	u_int8_t			rates[4] = {0x82, 0x04, 0x0B, 0x16};
    563 	struct atu_cmd_card_config	cmd;
    564 	u_int8_t			reg_domain;
    565 
    566 	DPRINTFN(10, ("%s: sending mac-addr\n", USBDEVNAME(sc->atu_dev)));
    567 	err = atu_send_mib(sc, MIB_MAC_ADDR__ADDR, ic->ic_myaddr);
    568 	if (err) {
    569 		DPRINTF(("%s: error setting mac-addr\n",
    570 		    USBDEVNAME(sc->atu_dev)));
    571 		return err;
    572 	}
    573 
    574 	/*
    575 	DPRINTF(("%s: sending reg-domain\n", USBDEVNAME(sc->atu_dev)));
    576 	err = atu_send_mib(sc, MIB_PHY__REG_DOMAIN, NR(0x30));
    577 	if (err) {
    578 		DPRINTF(("%s: error setting mac-addr\n",
    579 		    USBDEVNAME(sc->atu_dev)));
    580 		return err;
    581 	}
    582 	*/
    583 
    584 	memset(&cmd, 0, sizeof(cmd));
    585 	cmd.Cmd = CMD_STARTUP;
    586 	cmd.Reserved = 0;
    587 	USETW(cmd.Size, sizeof(cmd) - 4);
    588 
    589 	if (sc->atu_desired_channel != IEEE80211_CHAN_ANY)
    590 		cmd.Channel = (u_int8_t)sc->atu_desired_channel;
    591 	else
    592 		cmd.Channel = sc->atu_channel;
    593 	cmd.AutoRateFallback = 1;
    594 	memcpy(cmd.BasicRateSet, rates, 4);
    595 
    596 	/* ShortRetryLimit should be 7 according to 802.11 spec */
    597 	cmd.ShortRetryLimit = 7;
    598 	USETW(cmd.RTS_Threshold, 2347);
    599 	USETW(cmd.FragThreshold, 2346);
    600 
    601 	/* Doesn't seem to work, but we'll set it to 1 anyway */
    602 	cmd.PromiscuousMode = 1;
    603 
    604 	/* this goes into the beacon we transmit */
    605 	if (ic->ic_flags & IEEE80211_F_PRIVACY)
    606 		cmd.PrivacyInvoked = 1;
    607 	else
    608 		cmd.PrivacyInvoked = 0;
    609 
    610 	cmd.ExcludeUnencrypted = 0;
    611 
    612 	if (ic->ic_flags & IEEE80211_F_PRIVACY) {
    613 		switch (ic->ic_nw_keys[ic->ic_def_txkey].wk_keylen) {
    614 		case 5:
    615 			cmd.EncryptionType = ATU_WEP_40BITS;
    616 			break;
    617 		case 13:
    618 			cmd.EncryptionType = ATU_WEP_104BITS;
    619 			break;
    620 		default:
    621 			cmd.EncryptionType = ATU_WEP_OFF;
    622 			break;
    623 		}
    624 
    625 
    626 		cmd.WEP_DefaultKeyID = ic->ic_def_txkey;
    627 		for (i = 0; i < IEEE80211_WEP_NKID; i++) {
    628 			memcpy(cmd.WEP_DefaultKey[i], ic->ic_nw_keys[i].wk_key,
    629 			    ic->ic_nw_keys[i].wk_keylen);
    630 		}
    631 	}
    632 
    633 	/* Setting the SSID here doesn't seem to do anything */
    634 	memset(cmd.SSID, 0x00, sizeof(cmd.SSID));
    635 	memcpy(cmd.SSID, ic->ic_des_essid, ic->ic_des_esslen);
    636 	cmd.SSID_Len = ic->ic_des_esslen;
    637 
    638 	cmd.ShortPreamble = 0;
    639 	USETW(cmd.BeaconPeriod, 100);
    640 	/* cmd.BeaconPeriod = 65535; */
    641 
    642 	/*
    643 	 * TODO:
    644 	 * read reg domain MIB_PHY @ 0x17 (1 byte), (reply = 0x30)
    645 	 * we should do something usefull with this info. right now it's just
    646 	 * ignored
    647 	 */
    648 	err = atu_get_mib(sc, MIB_PHY__REG_DOMAIN, &reg_domain);
    649 	if (err) {
    650 		DPRINTF(("%s: could not get regdomain!\n",
    651 		    USBDEVNAME(sc->atu_dev)));
    652 	} else {
    653 		DPRINTF(("%s: in reg domain 0x%x according to the "
    654 		    "adapter\n", USBDEVNAME(sc->atu_dev), reg_domain));
    655 	}
    656 
    657 #ifdef ATU_DEBUG
    658 	if (atudebug) {
    659 		DPRINTFN(20, ("%s: configlen=%02lx\n", USBDEVNAME(sc->atu_dev),
    660 		    (unsigned long)sizeof(cmd)));
    661 	}
    662 #endif /* ATU_DEBUG */
    663 
    664 	/* Windoze : driver says exclude-unencrypted=1 & encr-type=1 */
    665 
    666 	err = atu_send_command(sc, (u_int8_t *)&cmd, sizeof(cmd));
    667 	if (err)
    668 		return err;
    669 	err = atu_wait_completion(sc, CMD_STARTUP, NULL);
    670 	if (err)
    671 		return err;
    672 
    673 	/* Turn on radio now */
    674 	err = atu_switch_radio(sc, 1);
    675 	if (err)
    676 		return err;
    677 
    678 	/* preamble type = short */
    679 	err = atu_send_mib(sc, MIB_LOCAL__PREAMBLE, NR(PREAMBLE_SHORT));
    680 	if (err)
    681 		return err;
    682 
    683 	/* frag = 1536 */
    684 	err = atu_send_mib(sc, MIB_MAC__FRAG, NR(2346));
    685 	if (err)
    686 		return err;
    687 
    688 	/* rts = 1536 */
    689 	err = atu_send_mib(sc, MIB_MAC__RTS, NR(2347));
    690 	if (err)
    691 		return err;
    692 
    693 	/* auto rate fallback = 1 */
    694 	err = atu_send_mib(sc, MIB_LOCAL__AUTO_RATE_FALLBACK, NR(1));
    695 	if (err)
    696 		return err;
    697 
    698 	/* power mode = full on, no power saving */
    699 	err = atu_send_mib(sc, MIB_MAC_MGMT__POWER_MODE,
    700 	    NR(POWER_MODE_ACTIVE));
    701 	if (err)
    702 		return err;
    703 
    704 	DPRINTFN(10, ("%s: completed initial config\n",
    705 	   USBDEVNAME(sc->atu_dev)));
    706 	return 0;
    707 }
    708 
    709 int
    710 atu_join(struct atu_softc *sc, struct ieee80211_node *node)
    711 {
    712 	struct atu_cmd_join		join;
    713 	u_int8_t			status = 0;	/* XXX: GCC */
    714 	usbd_status			err;
    715 
    716 	memset(&join, 0, sizeof(join));
    717 
    718 	join.Cmd = CMD_JOIN;
    719 	join.Reserved = 0x00;
    720 	USETW(join.Size, sizeof(join) - 4);
    721 
    722 	DPRINTFN(15, ("%s: pre-join sc->atu_bssid=%s\n",
    723 	    USBDEVNAME(sc->atu_dev), ether_sprintf(sc->atu_bssid)));
    724 	DPRINTFN(15, ("%s: mode=%d\n", USBDEVNAME(sc->atu_dev),
    725 	    sc->atu_mode));
    726 	memcpy(join.bssid, node->ni_bssid, IEEE80211_ADDR_LEN);
    727 	memset(join.essid, 0x00, 32);
    728 	memcpy(join.essid, node->ni_essid, node->ni_esslen);
    729 	join.essid_size = node->ni_esslen;
    730 	if (node->ni_capinfo & IEEE80211_CAPINFO_IBSS)
    731 		join.bss_type = AD_HOC_MODE;
    732 	else
    733 		join.bss_type = INFRASTRUCTURE_MODE;
    734 	join.channel = ieee80211_chan2ieee(&sc->sc_ic, node->ni_chan);
    735 
    736 	USETW(join.timeout, ATU_JOIN_TIMEOUT);
    737 	join.reserved = 0x00;
    738 
    739 	DPRINTFN(10, ("%s: trying to join BSSID=%s\n",
    740 	    USBDEVNAME(sc->atu_dev), ether_sprintf(join.bssid)));
    741 	err = atu_send_command(sc, (u_int8_t *)&join, sizeof(join));
    742 	if (err) {
    743 		DPRINTF(("%s: ERROR trying to join IBSS\n",
    744 		    USBDEVNAME(sc->atu_dev)));
    745 		return err;
    746 	}
    747 	err = atu_wait_completion(sc, CMD_JOIN, &status);
    748 	if (err) {
    749 		DPRINTF(("%s: error joining BSS!\n",
    750 		    USBDEVNAME(sc->atu_dev)));
    751 		return err;
    752 	}
    753 	if (status != STATUS_COMPLETE) {
    754 		DPRINTF(("%s: error joining... [status=%02x]\n",
    755 		    USBDEVNAME(sc->atu_dev), status));
    756 		return status;
    757 	} else {
    758 		DPRINTFN(10, ("%s: joined BSS\n", USBDEVNAME(sc->atu_dev)));
    759 	}
    760 	return err;
    761 }
    762 
    763 /*
    764  * Get the state of the DFU unit
    765  */
    766 int8_t
    767 atu_get_dfu_state(struct atu_softc *sc)
    768 {
    769 	u_int8_t	state;
    770 
    771 	if (atu_usb_request(sc, DFU_GETSTATE, 0, 0, 1, &state))
    772 		return -1;
    773 	return state;
    774 }
    775 
    776 /*
    777  * Get MAC opmode
    778  */
    779 u_int8_t
    780 atu_get_opmode(struct atu_softc *sc, u_int8_t *mode)
    781 {
    782 
    783 	return atu_usb_request(sc, UT_READ_VENDOR_INTERFACE, 0x33, 0x0001,
    784 	    0x0000, 1, mode);
    785 }
    786 
    787 /*
    788  * Upload the internal firmware into the device
    789  */
    790 void
    791 atu_internal_firmware(struct device *arg)
    792 {
    793 	struct atu_softc *sc = (struct atu_softc *)arg;
    794 	u_char	state, *ptr = NULL, *firm = NULL, status[6];
    795 	int block_size, block = 0, err, i;
    796 	size_t	bytes_left = 0;
    797 
    798 	/*
    799 	 * Uploading firmware is done with the DFU (Device Firmware Upgrade)
    800 	 * interface. See "Universal Serial Bus - Device Class Specification
    801 	 * for Device Firmware Upgrade" pdf for details of the protocol.
    802 	 * Maybe this could be moved to a separate 'firmware driver' once more
    803 	 * device drivers need it... For now we'll just do it here.
    804 	 *
    805 	 * Just for your information, the Atmel's DFU descriptor looks like
    806 	 * this:
    807 	 *
    808 	 * 07		size
    809 	 * 21		type
    810 	 * 01		capabilities : only firmware download, need reset
    811 	 *		  after download
    812 	 * 13 05	detach timeout : max 1299ms between DFU_DETACH and
    813 	 *		  reset
    814 	 * 00 04	max bytes of firmware per transaction : 1024
    815 	 */
    816 
    817 	/* Choose the right firmware for the device */
    818 	for (i = 0; i < sizeof(atu_radfirm)/sizeof(atu_radfirm[0]); i++)
    819 		if (sc->atu_radio == atu_radfirm[i].atur_type) {
    820 			firm = atu_radfirm[i].atur_internal;
    821 			bytes_left = atu_radfirm[i].atur_internal_sz;
    822 		}
    823 
    824 	if (firm == NULL) {
    825 		printf("%s: no firmware found\n", USBDEVNAME(sc->atu_dev));
    826 		return;
    827 	}
    828 
    829 	ptr = firm;
    830 	state = atu_get_dfu_state(sc);
    831 
    832 	while (block >= 0 && state > 0) {
    833 		switch (state) {
    834 		case DFUState_DnLoadSync:
    835 			/* get DFU status */
    836 			err = atu_usb_request(sc, DFU_GETSTATUS, 0, 0 , 6,
    837 			    status);
    838 			if (err) {
    839 				DPRINTF(("%s: dfu_getstatus failed!\n",
    840 				    USBDEVNAME(sc->atu_dev)));
    841 				return;
    842 			}
    843 			/* success means state => DnLoadIdle */
    844 			state = DFUState_DnLoadIdle;
    845 			continue;
    846 			break;
    847 
    848 		case DFUState_DFUIdle:
    849 		case DFUState_DnLoadIdle:
    850 			if (bytes_left>=DFU_MaxBlockSize)
    851 				block_size = DFU_MaxBlockSize;
    852 			else
    853 				block_size = bytes_left;
    854 			DPRINTFN(15, ("%s: firmware block %d\n",
    855 			    USBDEVNAME(sc->atu_dev), block));
    856 
    857 			err = atu_usb_request(sc, DFU_DNLOAD, block++, 0,
    858 			    block_size, ptr);
    859 			if (err) {
    860 				DPRINTF(("%s: dfu_dnload failed\n",
    861 				    USBDEVNAME(sc->atu_dev)));
    862 				return;
    863 			}
    864 
    865 			ptr += block_size;
    866 			bytes_left -= block_size;
    867 			if (block_size == 0)
    868 				block = -1;
    869 			break;
    870 
    871 		default:
    872 			usbd_delay_ms(sc->atu_udev, 100);
    873 			DPRINTFN(20, ("%s: sleeping for a while\n",
    874 			    USBDEVNAME(sc->atu_dev)));
    875 			break;
    876 		}
    877 
    878 		state = atu_get_dfu_state(sc);
    879 	}
    880 
    881 	if (state != DFUState_ManifestSync) {
    882 		DPRINTF(("%s: state != manifestsync... eek!\n",
    883 		    USBDEVNAME(sc->atu_dev)));
    884 	}
    885 
    886 	err = atu_usb_request(sc, DFU_GETSTATUS, 0, 0, 6, status);
    887 	if (err) {
    888 		DPRINTF(("%s: dfu_getstatus failed!\n",
    889 		    USBDEVNAME(sc->atu_dev)));
    890 		return;
    891 	}
    892 
    893 	DPRINTFN(15, ("%s: sending remap\n", USBDEVNAME(sc->atu_dev)));
    894 	err = atu_usb_request(sc, DFU_REMAP, 0, 0, 0, NULL);
    895 	if ((err) && (! sc->atu_quirk & ATU_QUIRK_NO_REMAP)) {
    896 		DPRINTF(("%s: remap failed!\n", USBDEVNAME(sc->atu_dev)));
    897 		return;
    898 	}
    899 
    900 	/* after a lot of trying and measuring I found out the device needs
    901 	 * about 56 miliseconds after sending the remap command before
    902 	 * it's ready to communicate again. So we'll wait just a little bit
    903 	 * longer than that to be sure...
    904 	 */
    905 	usbd_delay_ms(sc->atu_udev, 56+100);
    906 
    907 	printf("%s: reattaching after firmware upload\n",
    908 	    USBDEVNAME(sc->atu_dev));
    909 	usb_needs_reattach(sc->atu_udev);
    910 }
    911 
    912 void
    913 atu_external_firmware(struct device *arg)
    914 {
    915 	struct atu_softc *sc = (struct atu_softc *)arg;
    916 	u_char	*ptr = NULL, *firm = NULL;
    917 	int	block_size, block = 0, err, i;
    918 	size_t	bytes_left = 0;
    919 
    920 	for (i = 0; i < sizeof(atu_radfirm)/sizeof(atu_radfirm[0]); i++)
    921 		if (sc->atu_radio == atu_radfirm[i].atur_type) {
    922 			firm = atu_radfirm[i].atur_external;
    923 			bytes_left = atu_radfirm[i].atur_external_sz;
    924 		}
    925 
    926 	if (firm == NULL) {
    927 		printf("%s: no firmware found\n", USBDEVNAME(sc->atu_dev));
    928 		return;
    929 	}
    930 	ptr = firm;
    931 
    932 	while (bytes_left) {
    933 		if (bytes_left > 1024)
    934 			block_size = 1024;
    935 		else
    936 			block_size = bytes_left;
    937 
    938 		DPRINTFN(15, ("%s: block:%d size:%d\n",
    939 		    USBDEVNAME(sc->atu_dev), block, block_size));
    940 		err = atu_usb_request(sc, UT_WRITE_VENDOR_DEVICE, 0x0e,
    941 		    0x0802, block, block_size, ptr);
    942 		if (err) {
    943 			DPRINTF(("%s: could not load external firmware "
    944 			    "block\n", USBDEVNAME(sc->atu_dev)));
    945 			return;
    946 		}
    947 
    948 		ptr += block_size;
    949 		block++;
    950 		bytes_left -= block_size;
    951 	}
    952 
    953 	err = atu_usb_request(sc, UT_WRITE_VENDOR_DEVICE, 0x0e, 0x0802,
    954 	    block, 0, NULL);
    955 	if (err) {
    956 		DPRINTF(("%s: could not load last zero-length firmware "
    957 		    "block\n", USBDEVNAME(sc->atu_dev)));
    958 		return;
    959 	}
    960 
    961 	/*
    962 	 * The SMC2662w V.4 seems to require some time to do it's thing with
    963 	 * the external firmware... 20 ms isn't enough, but 21 ms works 100
    964 	 * times out of 100 tries. We'll wait a bit longer just to be sure
    965 	 */
    966 	if (sc->atu_quirk & ATU_QUIRK_FW_DELAY)
    967 		usbd_delay_ms(sc->atu_udev, 21 + 100);
    968 
    969 	DPRINTFN(10, ("%s: external firmware upload done\n",
    970 	    USBDEVNAME(sc->atu_dev)));
    971 	/* complete configuration after the firmwares have been uploaded */
    972 	atu_complete_attach(sc);
    973 }
    974 
    975 int
    976 atu_get_card_config(struct atu_softc *sc)
    977 {
    978 	struct ieee80211com		*ic = &sc->sc_ic;
    979 	struct atu_rfmd_conf		rfmd_conf;
    980 	struct atu_intersil_conf	intersil_conf;
    981 	int				err;
    982 
    983 	switch (sc->atu_radio) {
    984 
    985 	case RadioRFMD:
    986 	case RadioRFMD2958:
    987 	case RadioRFMD2958_SMC:
    988 		err = atu_usb_request(sc, UT_READ_VENDOR_INTERFACE, 0x33,
    989 		    0x0a02, 0x0000, sizeof(rfmd_conf),
    990 		    (u_int8_t *)&rfmd_conf);
    991 		if (err) {
    992 			DPRINTF(("%s: could not get rfmd config!\n",
    993 			    USBDEVNAME(sc->atu_dev)));
    994 			return err;
    995 		}
    996 		memcpy(ic->ic_myaddr, rfmd_conf.MACAddr, IEEE80211_ADDR_LEN);
    997 		break;
    998 
    999 	case RadioIntersil:
   1000 		err = atu_usb_request(sc, UT_READ_VENDOR_INTERFACE, 0x33,
   1001 		    0x0902, 0x0000, sizeof(intersil_conf),
   1002 		    (u_int8_t *)&intersil_conf);
   1003 		if (err) {
   1004 			DPRINTF(("%s: could not get intersil config!\n",
   1005 			    USBDEVNAME(sc->atu_dev)));
   1006 			return err;
   1007 		}
   1008 		memcpy(ic->ic_myaddr, intersil_conf.MACAddr,
   1009 		    IEEE80211_ADDR_LEN);
   1010 		break;
   1011 	}
   1012 	return 0;
   1013 }
   1014 
   1015 /*
   1016  * Probe for an AT76c503 chip.
   1017  */
   1018 USB_MATCH(atu)
   1019 {
   1020 	USB_MATCH_START(atu, uaa);
   1021 	int			i;
   1022 
   1023 #ifndef USB_USE_IFATTACH
   1024 	if (!uaa->iface)
   1025 		return(UMATCH_NONE);
   1026 #endif /* USB_USE_IFATTACH */
   1027 
   1028 	for (i = 0; i < sizeof(atu_devs)/sizeof(atu_devs[0]); i++) {
   1029 		struct atu_type *t = &atu_devs[i];
   1030 
   1031 		if (uaa->vendor == t->atu_vid &&
   1032 		    uaa->product == t->atu_pid) {
   1033 			return(UMATCH_VENDOR_PRODUCT);
   1034 		}
   1035 	}
   1036 	return(UMATCH_NONE);
   1037 }
   1038 
   1039 int
   1040 atu_media_change(struct ifnet *ifp)
   1041 {
   1042 	struct atu_softc	*sc = ifp->if_softc;
   1043 	struct ieee80211com	*ic = &sc->sc_ic;
   1044 	int			err, s;
   1045 
   1046 	DPRINTFN(10, ("%s: atu_media_change\n", USBDEVNAME(sc->atu_dev)));
   1047 
   1048 	err = ieee80211_media_change(ifp);
   1049 	if (err == ENETRESET) {
   1050 		if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) ==
   1051 		    (IFF_RUNNING|IFF_UP)) {
   1052 			s = splnet();
   1053 			ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
   1054 			atu_initial_config(sc);
   1055 			ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
   1056 			splx(s);
   1057 		}
   1058 		err = 0;
   1059 	}
   1060 
   1061 	return (err);
   1062 }
   1063 
   1064 void
   1065 atu_media_status(struct ifnet *ifp, struct ifmediareq *req)
   1066 {
   1067 #ifdef ATU_DEBUG
   1068 	struct atu_softc	*sc = ifp->if_softc;
   1069 #endif /* ATU_DEBUG */
   1070 
   1071 	DPRINTFN(10, ("%s: atu_media_status\n", USBDEVNAME(sc->atu_dev)));
   1072 
   1073 	ieee80211_media_status(ifp, req);
   1074 }
   1075 
   1076 void
   1077 atu_task(void *arg)
   1078 {
   1079 	struct atu_softc	*sc = (struct atu_softc *)arg;
   1080 	struct ieee80211com	*ic = &sc->sc_ic;
   1081 	usbd_status		err;
   1082 	int			s;
   1083 
   1084 	DPRINTFN(10, ("%s: atu_task\n", USBDEVNAME(sc->atu_dev)));
   1085 
   1086 	if (sc->sc_state != ATU_S_OK)
   1087 		return;
   1088 
   1089 	switch (sc->sc_cmd) {
   1090 	case ATU_C_SCAN:
   1091 
   1092 		err = atu_start_scan(sc);
   1093 		if (err) {
   1094 			DPRINTFN(1, ("%s: atu_task: couldn't start scan!\n",
   1095 			    USBDEVNAME(sc->atu_dev)));
   1096 			return;
   1097 		}
   1098 
   1099 		err = atu_wait_completion(sc, CMD_START_SCAN, NULL);
   1100 		if (err) {
   1101 			DPRINTF(("%s: atu_task: error waiting for scan\n",
   1102 			    USBDEVNAME(sc->atu_dev)));
   1103 			return;
   1104 		}
   1105 
   1106 		DPRINTF(("%s: ==========================> END OF SCAN!\n",
   1107 		    USBDEVNAME(sc->atu_dev)));
   1108 
   1109 		s = splnet();
   1110 		ieee80211_next_scan(ic);
   1111 		splx(s);
   1112 
   1113 		DPRINTF(("%s: ----------------------======> END OF SCAN2!\n",
   1114 		    USBDEVNAME(sc->atu_dev)));
   1115 		break;
   1116 
   1117 	case ATU_C_JOIN:
   1118 		atu_join(sc, ic->ic_bss);
   1119 	}
   1120 }
   1121 
   1122 int
   1123 atu_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
   1124 {
   1125 	struct ifnet		*ifp = ic->ic_ifp;
   1126 	struct atu_softc	*sc = ifp->if_softc;
   1127 	enum ieee80211_state	ostate = ic->ic_state;
   1128 
   1129 	DPRINTFN(10, ("%s: atu_newstate: %s -> %s\n", USBDEVNAME(sc->atu_dev),
   1130 	    ieee80211_state_name[ostate], ieee80211_state_name[nstate]));
   1131 
   1132 	switch (nstate) {
   1133 	case IEEE80211_S_SCAN:
   1134 		memcpy(ic->ic_chan_scan, ic->ic_chan_active,
   1135 		    sizeof(ic->ic_chan_active));
   1136 		ieee80211_node_table_reset(&ic->ic_scan);
   1137 
   1138 		/* tell the event thread that we want a scan */
   1139 		sc->sc_cmd = ATU_C_SCAN;
   1140 		usb_add_task(sc->atu_udev, &sc->sc_task, USB_TASKQ_DRIVER);
   1141 
   1142 		/* handle this ourselves */
   1143 		ic->ic_state = nstate;
   1144 		return (0);
   1145 
   1146 	case IEEE80211_S_AUTH:
   1147 	case IEEE80211_S_RUN:
   1148 		if (ostate == IEEE80211_S_SCAN) {
   1149 			sc->sc_cmd = ATU_C_JOIN;
   1150 			usb_add_task(sc->atu_udev, &sc->sc_task,
   1151 			    USB_TASKQ_DRIVER);
   1152 		}
   1153 		break;
   1154 	default:
   1155 		/* nothing to do */
   1156 		break;
   1157 	}
   1158 
   1159 	return (*sc->sc_newstate)(ic, nstate, arg);
   1160 }
   1161 
   1162 /*
   1163  * Attach the interface. Allocate softc structures, do
   1164  * setup and ethernet/BPF attach.
   1165  */
   1166 USB_ATTACH(atu)
   1167 {
   1168 	USB_ATTACH_START(atu, sc, uaa);
   1169 	char				*devinfop;
   1170 	usbd_status			err;
   1171 	usbd_device_handle		dev = uaa->device;
   1172 	u_int8_t			mode, channel;
   1173 	int i;
   1174 
   1175 	sc->sc_state = ATU_S_UNCONFIG;
   1176 
   1177 	devinfop = usbd_devinfo_alloc(dev, 0);
   1178 	USB_ATTACH_SETUP;
   1179 	printf("%s: %s\n", USBDEVNAME(sc->atu_dev), devinfop);
   1180 	usbd_devinfo_free(devinfop);
   1181 
   1182 	err = usbd_set_config_no(dev, ATU_CONFIG_NO, 1);
   1183 	if (err) {
   1184 		printf("%s: setting config no failed\n",
   1185 		    USBDEVNAME(sc->atu_dev));
   1186 		USB_ATTACH_ERROR_RETURN;
   1187 	}
   1188 
   1189 	err = usbd_device2interface_handle(dev, ATU_IFACE_IDX, &sc->atu_iface);
   1190 	if (err) {
   1191 		printf("%s: getting interface handle failed\n",
   1192 		    USBDEVNAME(sc->atu_dev));
   1193 		USB_ATTACH_ERROR_RETURN;
   1194 	}
   1195 
   1196 	sc->atu_unit = device_unit(self);
   1197 	sc->atu_udev = dev;
   1198 
   1199 	/*
   1200 	 * look up the radio_type for the device
   1201 	 * basically does the same as USB_MATCH
   1202 	 */
   1203 	for (i = 0; i < sizeof(atu_devs)/sizeof(atu_devs[0]); i++) {
   1204 		struct atu_type *t = &atu_devs[i];
   1205 
   1206 		if (uaa->vendor == t->atu_vid &&
   1207 		    uaa->product == t->atu_pid) {
   1208 			sc->atu_radio = t->atu_radio;
   1209 			sc->atu_quirk = t->atu_quirk;
   1210 		}
   1211 	}
   1212 
   1213 	/*
   1214 	 * Check in the interface descriptor if we're in DFU mode
   1215 	 * If we're in DFU mode, we upload the external firmware
   1216 	 * If we're not, the PC must have rebooted without power-cycling
   1217 	 * the device.. I've tried this out, a reboot only requeres the
   1218 	 * external firmware to be reloaded :)
   1219 	 *
   1220 	 * Hmm. The at76c505a doesn't report a DFU descriptor when it's
   1221 	 * in DFU mode... Let's just try to get the opmode
   1222 	 */
   1223 	err = atu_get_opmode(sc, &mode);
   1224 	DPRINTFN(20, ("%s: opmode: %d\n", USBDEVNAME(sc->atu_dev), mode));
   1225 	if (err || (mode != MODE_NETCARD && mode != MODE_NOFLASHNETCARD)) {
   1226 		DPRINTF(("%s: starting internal firmware download\n",
   1227 		    USBDEVNAME(sc->atu_dev)));
   1228 
   1229 		atu_internal_firmware((struct device *)sc);
   1230 		/*
   1231 		 * atu_internal_firmware will cause a reset of the device
   1232 		 * so we don't want to do any more configuration after this
   1233 		 * point.
   1234 		 */
   1235 		USB_ATTACH_SUCCESS_RETURN;
   1236 	}
   1237 
   1238 #ifndef USB_USE_IFATTACH
   1239 	uaa->iface = sc->atu_iface;
   1240 #endif /* USB_USE_IFATTACH */
   1241 
   1242 	if (mode != MODE_NETCARD) {
   1243 		DPRINTFN(15, ("%s: device needs external firmware\n",
   1244 		    USBDEVNAME(sc->atu_dev)));
   1245 
   1246 		if (mode != MODE_NOFLASHNETCARD) {
   1247 			DPRINTF(("%s: unexpected opmode=%d\n",
   1248 			    USBDEVNAME(sc->atu_dev), mode));
   1249 		}
   1250 
   1251 		/*
   1252 		 * There is no difference in opmode before and after external
   1253 		 * firmware upload with the SMC2662 V.4 . So instead we'll try
   1254 		 * to read the channel number. If we succeed, external
   1255 		 * firmwaremust have been already uploaded...
   1256 		 */
   1257 		if (sc->atu_radio != RadioIntersil) {
   1258 			err = atu_get_mib(sc, MIB_PHY__CHANNEL, &channel);
   1259 			if (!err) {
   1260 				DPRINTF(("%s: external firmware has already"
   1261 				    " been downloaded\n",
   1262 				    USBDEVNAME(sc->atu_dev)));
   1263 				atu_complete_attach(sc);
   1264 				USB_ATTACH_SUCCESS_RETURN;
   1265 			}
   1266 		}
   1267 
   1268 		atu_external_firmware((struct device *)sc);
   1269 
   1270 		/*
   1271 		 * atu_external_firmware will call atu_complete_attach after
   1272 		 * it's finished so we can just return.
   1273 		 */
   1274 	} else {
   1275 		/* all the firmwares are in place, so complete the attach */
   1276 		atu_complete_attach(sc);
   1277 	}
   1278 
   1279 	USB_ATTACH_SUCCESS_RETURN;
   1280 }
   1281 
   1282 void
   1283 atu_complete_attach(struct atu_softc *sc)
   1284 {
   1285 	struct ieee80211com		*ic = &sc->sc_ic;
   1286 	struct ifnet			*ifp = &sc->sc_if;
   1287 	usb_interface_descriptor_t	*id;
   1288 	usb_endpoint_descriptor_t	*ed;
   1289 	usbd_status			err;
   1290 	int				i;
   1291 #ifdef ATU_DEBUG
   1292 	struct atu_fw			fw;
   1293 #endif
   1294 
   1295 	id = usbd_get_interface_descriptor(sc->atu_iface);
   1296 
   1297 	/* Find endpoints. */
   1298 	for (i = 0; i < id->bNumEndpoints; i++) {
   1299 		ed = usbd_interface2endpoint_descriptor(sc->atu_iface, i);
   1300 		if (!ed) {
   1301 			DPRINTF(("%s: num_endp:%d\n", USBDEVNAME(sc->atu_dev),
   1302 			    sc->atu_iface->idesc->bNumEndpoints));
   1303 			DPRINTF(("%s: couldn't get ep %d\n",
   1304 			    USBDEVNAME(sc->atu_dev), i));
   1305 			return;
   1306 		}
   1307 		if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
   1308 		    UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
   1309 			sc->atu_ed[ATU_ENDPT_RX] = ed->bEndpointAddress;
   1310 		} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
   1311 			   UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
   1312 			sc->atu_ed[ATU_ENDPT_TX] = ed->bEndpointAddress;
   1313 		}
   1314 	}
   1315 
   1316 	/* read device config & get MAC address */
   1317 	err = atu_get_card_config(sc);
   1318 	if (err) {
   1319 		printf("\n%s: could not get card cfg!\n",
   1320 		    USBDEVNAME(sc->atu_dev));
   1321 		return;
   1322 	}
   1323 
   1324 #ifdef ATU_DEBUG
   1325 	/* DEBUG : try to get firmware version */
   1326 	err = atu_get_mib(sc, MIB_FW_VERSION, sizeof(fw), 0,
   1327 	    (u_int8_t *)&fw);
   1328 	if (!err) {
   1329 		DPRINTFN(15, ("%s: firmware: maj:%d min:%d patch:%d "
   1330 		    "build:%d\n", USBDEVNAME(sc->atu_dev), fw.major, fw.minor,
   1331 		    fw.patch, fw.build));
   1332 	} else {
   1333 		DPRINTF(("%s: get firmware version failed\n",
   1334 		    USBDEVNAME(sc->atu_dev)));
   1335 	}
   1336 #endif /* ATU_DEBUG */
   1337 
   1338 	/* Show the world our MAC address */
   1339 	printf("%s: MAC address %s\n", USBDEVNAME(sc->atu_dev),
   1340 	    ether_sprintf(ic->ic_myaddr));
   1341 
   1342 	sc->atu_cdata.atu_tx_inuse = 0;
   1343 	sc->atu_encrypt = ATU_WEP_OFF;
   1344 	sc->atu_wepkeylen = ATU_WEP_104BITS;
   1345 	sc->atu_wepkey = 0;
   1346 
   1347 	bzero(sc->atu_bssid, ETHER_ADDR_LEN);
   1348 	sc->atu_channel = ATU_DEFAULT_CHANNEL;
   1349 	sc->atu_desired_channel = IEEE80211_CHAN_ANY;
   1350 	sc->atu_mode = INFRASTRUCTURE_MODE;
   1351 
   1352 	ic->ic_ifp = ifp;
   1353 	ic->ic_phytype = IEEE80211_T_DS;
   1354 	ic->ic_opmode = IEEE80211_M_STA;
   1355 	ic->ic_state = IEEE80211_S_INIT;
   1356 #ifdef FIXME
   1357 	ic->ic_caps = IEEE80211_C_IBSS | IEEE80211_C_WEP | IEEE80211_C_SCANALL;
   1358 #else
   1359 	ic->ic_caps = IEEE80211_C_IBSS | IEEE80211_C_WEP;
   1360 #endif
   1361 
   1362 	i = 0;
   1363 	ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[i++] = 2;
   1364 	ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[i++] = 4;
   1365 	ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[i++] = 11;
   1366 	ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[i++] = 22;
   1367 	ic->ic_sup_rates[IEEE80211_MODE_11B].rs_nrates = i;
   1368 
   1369 	for (i = 1; i <= 14; i++) {
   1370 		ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B |
   1371 		    IEEE80211_CHAN_PASSIVE;
   1372 		ic->ic_channels[i].ic_freq = ieee80211_ieee2mhz(i,
   1373 		    ic->ic_channels[i].ic_flags);
   1374 	}
   1375 
   1376 	ic->ic_ibss_chan = &ic->ic_channels[0];
   1377 
   1378 	ifp->if_softc = sc;
   1379 	memcpy(ifp->if_xname, USBDEVNAME(sc->atu_dev), IFNAMSIZ);
   1380 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
   1381 	ifp->if_init = atu_init;
   1382 	ifp->if_stop = atu_stop;
   1383 	ifp->if_start = atu_start;
   1384 	ifp->if_ioctl = atu_ioctl;
   1385 	ifp->if_watchdog = atu_watchdog;
   1386 	ifp->if_mtu = ATU_DEFAULT_MTU;
   1387 	IFQ_SET_READY(&ifp->if_snd);
   1388 
   1389 	/* Call MI attach routine. */
   1390 	if_attach(ifp);
   1391 	ieee80211_ifattach(ic);
   1392 
   1393 	sc->sc_newstate = ic->ic_newstate;
   1394 	ic->ic_newstate = atu_newstate;
   1395 
   1396 	/* setup ifmedia interface */
   1397 	ieee80211_media_init(ic, atu_media_change, atu_media_status);
   1398 
   1399 	usb_init_task(&sc->sc_task, atu_task, sc);
   1400 
   1401 	sc->sc_state = ATU_S_OK;
   1402 }
   1403 
   1404 USB_DETACH(atu)
   1405 {
   1406 	USB_DETACH_START(atu, sc);
   1407 	struct ifnet		*ifp = &sc->sc_if;
   1408 
   1409 	DPRINTFN(10, ("%s: atu_detach state=%d\n", USBDEVNAME(sc->atu_dev),
   1410 	    sc->sc_state));
   1411 
   1412 	if (sc->sc_state != ATU_S_UNCONFIG) {
   1413 		atu_stop(ifp, 1);
   1414 
   1415 		ieee80211_ifdetach(&sc->sc_ic);
   1416 		if_detach(ifp);
   1417 	}
   1418 
   1419 	return(0);
   1420 }
   1421 
   1422 int
   1423 atu_activate(device_ptr_t self, enum devact act)
   1424 {
   1425 	struct atu_softc *sc = (struct atu_softc *)self;
   1426 
   1427 	switch (act) {
   1428 	case DVACT_ACTIVATE:
   1429 		return (EOPNOTSUPP);
   1430 		break;
   1431 	case DVACT_DEACTIVATE:
   1432 		if (sc->sc_state != ATU_S_UNCONFIG) {
   1433 			if_deactivate(&sc->atu_ec.ec_if);
   1434 			sc->sc_state = ATU_S_DEAD;
   1435 		}
   1436 		break;
   1437 	}
   1438 	return (0);
   1439 }
   1440 
   1441 /*
   1442  * A frame has been uploaded: pass the resulting mbuf chain up to
   1443  * the higher level protocols.
   1444  */
   1445 void
   1446 atu_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
   1447 {
   1448 	struct ue_chain		*c = priv;
   1449 	struct atu_softc	*sc = (void *)c->ue_dev;
   1450 	struct ieee80211com	*ic = &sc->sc_ic;
   1451 	struct ifnet		*ifp = &sc->sc_if;
   1452 	struct atu_rx_hdr	*h;
   1453 	struct ieee80211_frame_min	*wh;
   1454 	struct ieee80211_node	*ni;
   1455 	struct mbuf		*m;
   1456 	u_int32_t		len;
   1457 	int			s;
   1458 	int			rssi;
   1459 	u_int32_t		rx_time;
   1460 
   1461 	DPRINTFN(25, ("%s: atu_rxeof\n", USBDEVNAME(sc->atu_dev)));
   1462 
   1463 	if (sc->sc_state != ATU_S_OK)
   1464 		return;
   1465 
   1466 	usbd_unmap_buffer(xfer);
   1467 
   1468 	if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) != (IFF_RUNNING|IFF_UP))
   1469 		goto done;
   1470 
   1471 	if (status != USBD_NORMAL_COMPLETION) {
   1472 		DPRINTF(("%s: status != USBD_NORMAL_COMPLETION\n",
   1473 		    USBDEVNAME(sc->atu_dev)));
   1474 		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
   1475 			return;
   1476 		}
   1477 #if 0
   1478 		if (status == USBD_IOERROR) {
   1479 			DPRINTF(("%s: rx: EEK! lost device?\n",
   1480 			    USBDEVNAME(sc->atu_dev)));
   1481 
   1482 			/*
   1483 			 * My experience with USBD_IOERROR is that trying to
   1484 			 * restart the transfer will always fail and we'll
   1485 			 * keep on looping restarting transfers untill someone
   1486 			 * pulls the plug of the device.
   1487 			 * So we don't restart the transfer, but just let it
   1488 			 * die... If someone knows of a situation where we can
   1489 			 * recover from USBD_IOERROR, let me know.
   1490 			 */
   1491 			splx(s);
   1492 			return;
   1493 		}
   1494 #endif /* 0 */
   1495 
   1496 		if (usbd_ratecheck(&sc->atu_rx_notice)) {
   1497 			DPRINTF(("%s: usb error on rx: %s\n",
   1498 			    USBDEVNAME(sc->atu_dev), usbd_errstr(status)));
   1499 		}
   1500 		if (status == USBD_STALLED)
   1501 			usbd_clear_endpoint_stall_async(
   1502 			    sc->atu_ep[ATU_ENDPT_RX]);
   1503 		goto done;
   1504 	}
   1505 
   1506 	usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL);
   1507 
   1508 	if (len <= 1) {
   1509 		DPRINTF(("%s: atu_rxeof: too short\n",
   1510 		    USBDEVNAME(sc->atu_dev)));
   1511 		goto done;
   1512 	}
   1513 
   1514 	m = c->ue_mbuf;
   1515 
   1516 	/*
   1517 	 * Allocate new mbuf cluster for the next transfer.
   1518 	 * If that failed, discard current packet and recycle the mbuf.
   1519 	 */
   1520 	if ((c->ue_mbuf = usb_ether_newbuf(NULL)) == NULL) {
   1521 		printf("%s: no memory for rx list -- packet dropped!\n",
   1522 		    USBDEVNAME(sc->atu_dev));
   1523 		ifp->if_ierrors++;
   1524 		c->ue_mbuf = usb_ether_newbuf(m);
   1525 		goto done;
   1526 	}
   1527 
   1528 	h = mtod(m, struct atu_rx_hdr *);
   1529 	len = UGETW(h->length) + ATU_RX_HDRLEN - 4; /* XXX magic number */
   1530 	rssi = h->rssi;
   1531 	rx_time = UGETDW(h->rx_time);
   1532 
   1533 	m->m_pkthdr.rcvif = ifp;
   1534 	m->m_pkthdr.len = m->m_len = len;
   1535 	m_adj(m, ATU_RX_HDRLEN);	/* strip header */
   1536 
   1537 	wh = mtod(m, struct ieee80211_frame_min *);
   1538 	ni = ieee80211_find_rxnode(ic, wh);
   1539 
   1540 	ifp->if_ipackets++;
   1541 
   1542 	s = splnet();
   1543 
   1544 	if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
   1545 		/*
   1546 		 * WEP is decrypted by hardware. Clear WEP bit
   1547 		 * header for ieee80211_input().
   1548 		 */
   1549 		wh->i_fc[1] &= ~IEEE80211_FC1_WEP;
   1550 	}
   1551 
   1552 	ieee80211_input(ic, m, ni, rssi, rx_time);
   1553 
   1554 	ieee80211_free_node(ni);
   1555 	splx(s);
   1556 done:
   1557 	/* Setup new transfer. */
   1558 	(void)usbd_map_buffer_mbuf(c->ue_xfer, c->ue_mbuf);
   1559 	usbd_setup_xfer(c->ue_xfer, sc->atu_ep[ATU_ENDPT_RX], c, NULL /* XXX buf */,
   1560 	    ATU_RX_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT,
   1561 		atu_rxeof);
   1562 	usbd_transfer(c->ue_xfer);
   1563 }
   1564 
   1565 /*
   1566  * A frame was downloaded to the chip. It's safe for us to clean up
   1567  * the list buffers.
   1568  */
   1569 void
   1570 atu_txeof(usbd_xfer_handle xfer, usbd_private_handle priv,
   1571     usbd_status status)
   1572 {
   1573 	struct ue_chain		*c = priv;
   1574 	struct atu_softc	*sc = (void *)c->ue_dev;
   1575 	struct ifnet		*ifp = &sc->sc_if;
   1576 	usbd_status		err;
   1577 	int			s;
   1578 
   1579 	DPRINTFN(25, ("%s: atu_txeof status=%d\n", USBDEVNAME(sc->atu_dev),
   1580 	    status));
   1581 
   1582 	if (c->ue_mbuf) {
   1583 		usbd_unmap_buffer(xfer);
   1584 		m_freem(c->ue_mbuf);
   1585 		c->ue_mbuf = NULL;
   1586 	}
   1587 
   1588 	if (status != USBD_NORMAL_COMPLETION) {
   1589 		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
   1590 			return;
   1591 
   1592 		DPRINTF(("%s: usb error on tx: %s\n", USBDEVNAME(sc->atu_dev),
   1593 		    usbd_errstr(status)));
   1594 		if (status == USBD_STALLED)
   1595 			usbd_clear_endpoint_stall_async(sc->atu_ep[ATU_ENDPT_TX]);
   1596 		return;
   1597 	}
   1598 
   1599 	usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &err);
   1600 
   1601 	if (err)
   1602 		ifp->if_oerrors++;
   1603 	else
   1604 		ifp->if_opackets++;
   1605 
   1606 	s = splnet();
   1607 	SLIST_INSERT_HEAD(&sc->atu_cdata.atu_tx_free, c, ue_next);
   1608 	sc->atu_cdata.atu_tx_inuse--;
   1609 	if (sc->atu_cdata.atu_tx_inuse == 0)
   1610 		ifp->if_timer = 0;
   1611 	ifp->if_flags &= ~IFF_OACTIVE;
   1612 	splx(s);
   1613 
   1614 	atu_start(ifp);
   1615 }
   1616 
   1617 u_int8_t
   1618 atu_calculate_padding(int size)
   1619 {
   1620 	size %= 64;
   1621 
   1622 	if (size < 50)
   1623 		return (50 - size);
   1624 	if (size >=61)
   1625 		return (64 + 50 - size);
   1626 	return (0);
   1627 }
   1628 
   1629 int
   1630 atu_tx_start(struct atu_softc *sc, struct ieee80211_node *ni,
   1631     struct ue_chain *c, struct mbuf *m)
   1632 {
   1633 	int			len;
   1634 	struct atu_tx_hdr	*h;
   1635 	usbd_status		err;
   1636 	u_int8_t		pad;
   1637 	int			ret;
   1638 
   1639 	DPRINTFN(25, ("%s: atu_tx_start\n", USBDEVNAME(sc->atu_dev)));
   1640 
   1641 	/* Don't try to send when we're shutting down the driver */
   1642 	if (sc->sc_state != ATU_S_OK) {
   1643 		m_freem(m);
   1644 		return(EIO);
   1645 	}
   1646 
   1647 	len = m->m_pkthdr.len;
   1648 
   1649 	/* Prepend atmel headers */
   1650 	M_PREPEND(m, ATU_TX_HDRLEN, M_DONTWAIT);
   1651 	if (m != NULL)
   1652 		m = m_pullup(m, ATU_TX_HDRLEN);	/* just in case */
   1653 	if (m == NULL) {
   1654 		sc->sc_if.if_oerrors++;
   1655 		return (ENOBUFS);
   1656 	}
   1657 
   1658 	h = mtod(m, struct atu_tx_hdr *);
   1659 	memset(h, 0, ATU_TX_HDRLEN);
   1660 	USETW(h->length, len);
   1661 	h->tx_rate = 4; /* XXX rate = auto */
   1662 	len += ATU_TX_HDRLEN;
   1663 
   1664 	pad = atu_calculate_padding(len);
   1665 	len += pad;
   1666 	h->padding = pad;
   1667 
   1668 	if (pad > 0) {
   1669 		m_copyback(m, len - 1, 1, "");	/* expand mbuf chain */
   1670 		if (m->m_pkthdr.len != len) {
   1671 			m_freem(m);
   1672 			return (ENOBUFS);
   1673 		}
   1674 	}
   1675 
   1676 	ret = usb_ether_map_tx_buffer_mbuf(c, m);
   1677 	if (ret) {
   1678 		m_freem(m);
   1679 		return (ret);
   1680 	}
   1681 
   1682 	usbd_setup_xfer(c->ue_xfer, sc->atu_ep[ATU_ENDPT_TX],
   1683 	    c, NULL /* XXX buf */, len, USBD_NO_COPY, ATU_TX_TIMEOUT,
   1684 	    atu_txeof);
   1685 
   1686 	/* Let's get this thing into the air! */
   1687 	err = usbd_transfer(c->ue_xfer);
   1688 	if (err != USBD_IN_PROGRESS) {
   1689 		DPRINTFN(25, ("%s: atu_tx_start, err=%d",
   1690 		    USBDEVNAME(sc->atu_dev), err));
   1691 		c->ue_mbuf = NULL;
   1692 		m_freem(m);
   1693 		return(EIO);
   1694 	}
   1695 
   1696 	return (0);
   1697 }
   1698 
   1699 void
   1700 atu_start(struct ifnet *ifp)
   1701 {
   1702 	struct atu_softc	*sc = ifp->if_softc;
   1703 	struct ieee80211com	*ic = &sc->sc_ic;
   1704 	struct atu_cdata	*cd = &sc->atu_cdata;
   1705 	struct ieee80211_node	*ni;
   1706 	struct ue_chain		*c;
   1707 	struct mbuf		*m = NULL;
   1708 	int			s;
   1709 
   1710 	DPRINTFN(25, ("%s: atu_start: enter\n", USBDEVNAME(sc->atu_dev)));
   1711 
   1712 	if ((ifp->if_flags & IFF_RUNNING) == 0) {
   1713 		return;
   1714 	}
   1715 	if (ifp->if_flags & IFF_OACTIVE) {
   1716 		DPRINTFN(30, ("%s: atu_start: IFF_OACTIVE\n",
   1717 		    USBDEVNAME(sc->atu_dev)));
   1718 		return;
   1719 	}
   1720 
   1721 	for (;;) {
   1722 		/* grab a TX buffer */
   1723 		s = splnet();
   1724 		c = SLIST_FIRST(&cd->atu_tx_free);
   1725 		if (c != NULL) {
   1726 			SLIST_REMOVE_HEAD(&cd->atu_tx_free, ue_next);
   1727 			cd->atu_tx_inuse++;
   1728 			if (cd->atu_tx_inuse == ATU_TX_LIST_CNT)
   1729 				ifp->if_flags |= IFF_OACTIVE;
   1730 		}
   1731 		splx(s);
   1732 		if (c == NULL) {
   1733 			DPRINTFN(10, ("%s: out of tx xfers\n",
   1734 			    USBDEVNAME(sc->atu_dev)));
   1735 			ifp->if_flags |= IFF_OACTIVE;
   1736 			break;
   1737 		}
   1738 
   1739 		/*
   1740 		 * Poll the management queue for frames, it has priority over
   1741 		 * normal data frames.
   1742 		 */
   1743 		IF_DEQUEUE(&ic->ic_mgtq, m);
   1744 		if (m == NULL) {
   1745 			DPRINTFN(10, ("%s: atu_start: data packet\n",
   1746 			    USBDEVNAME(sc->atu_dev)));
   1747 			if (ic->ic_state != IEEE80211_S_RUN) {
   1748 				DPRINTFN(25, ("%s: no data till running\n",
   1749 				    USBDEVNAME(sc->atu_dev)));
   1750 				/* put the xfer back on the list */
   1751 				s = splnet();
   1752 				SLIST_INSERT_HEAD(&cd->atu_tx_free, c,
   1753 				    ue_next);
   1754 				cd->atu_tx_inuse--;
   1755 				splx(s);
   1756 				break;
   1757 			}
   1758 
   1759 			IFQ_DEQUEUE(&ifp->if_snd, m);
   1760 			if (m == NULL) {
   1761 				DPRINTFN(25, ("%s: nothing to send\n",
   1762 				    USBDEVNAME(sc->atu_dev)));
   1763 				s = splnet();
   1764 				SLIST_INSERT_HEAD(&cd->atu_tx_free, c,
   1765 				    ue_next);
   1766 				cd->atu_tx_inuse--;
   1767 				splx(s);
   1768 				break;
   1769 			}
   1770 #if NBPFILTER > 0
   1771 			if (ifp->if_bpf)
   1772 				bpf_mtap(ifp->if_bpf, m);
   1773 #endif
   1774 			ni = ieee80211_find_txnode(ic,
   1775 			    mtod(m, struct ether_header *)->ether_dhost);
   1776 			if (ni == NULL) {
   1777 				m_freem(m);
   1778 				goto bad;
   1779 			}
   1780 			m = ieee80211_encap(ic, m, ni);
   1781 			if (m == NULL)
   1782 				goto bad;
   1783 		} else {
   1784 			DPRINTFN(25, ("%s: atu_start: mgmt packet\n",
   1785 			    USBDEVNAME(sc->atu_dev)));
   1786 
   1787 			/*
   1788 			 * Hack!  The referenced node pointer is in the
   1789 			 * rcvif field of the packet header.  This is
   1790 			 * placed there by ieee80211_mgmt_output because
   1791 			 * we need to hold the reference with the frame
   1792 			 * and there's no other way (other than packet
   1793 			 * tags which we consider too expensive to use)
   1794 			 * to pass it along.
   1795 			 */
   1796 			ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
   1797 			m->m_pkthdr.rcvif = NULL;
   1798 
   1799 			/* sc->sc_stats.ast_tx_mgmt++; */
   1800 		}
   1801 
   1802 #if NBPFILTER > 0
   1803 		if (ic->ic_rawbpf)
   1804 			bpf_mtap(ic->ic_rawbpf, m);
   1805 #endif
   1806 
   1807 		if (atu_tx_start(sc, ni, c, m)) {
   1808 bad:
   1809 			s = splnet();
   1810 			SLIST_INSERT_HEAD(&cd->atu_tx_free, c,
   1811 			    ue_next);
   1812 			cd->atu_tx_inuse--;
   1813 			splx(s);
   1814 			/* ifp_if_oerrors++; */
   1815 			if (ni != NULL)
   1816 				ieee80211_free_node(ni);
   1817 			continue;
   1818 		}
   1819 		ifp->if_timer = 5;
   1820 	}
   1821 }
   1822 
   1823 int
   1824 atu_init(struct ifnet *ifp)
   1825 {
   1826 	struct atu_softc	*sc = ifp->if_softc;
   1827 	struct ieee80211com	*ic = &sc->sc_ic;
   1828 	struct ue_chain		*c;
   1829 	usbd_status		err;
   1830 	int			i, s;
   1831 
   1832 	s = splnet();
   1833 
   1834 	DPRINTFN(10, ("%s: atu_init\n", USBDEVNAME(sc->atu_dev)));
   1835 
   1836 	if (ifp->if_flags & IFF_RUNNING) {
   1837 		splx(s);
   1838 		return(0);
   1839 	}
   1840 
   1841 	/* Open RX and TX pipes. */
   1842 	err = usbd_open_pipe(sc->atu_iface, sc->atu_ed[ATU_ENDPT_RX],
   1843 	    USBD_EXCLUSIVE_USE, &sc->atu_ep[ATU_ENDPT_RX]);
   1844 	if (err) {
   1845 		DPRINTF(("%s: open rx pipe failed: %s\n",
   1846 		    USBDEVNAME(sc->atu_dev), usbd_errstr(err)));
   1847 		splx(s);
   1848 		return(EIO);
   1849 	}
   1850 
   1851 	err = usbd_open_pipe(sc->atu_iface, sc->atu_ed[ATU_ENDPT_TX],
   1852 	    USBD_EXCLUSIVE_USE, &sc->atu_ep[ATU_ENDPT_TX]);
   1853 	if (err) {
   1854 		DPRINTF(("%s: open tx pipe failed: %s\n",
   1855 		    USBDEVNAME(sc->atu_dev), usbd_errstr(err)));
   1856 		splx(s);
   1857 		return(EIO);
   1858 	}
   1859 
   1860 	/* Init TX ring */
   1861 	if ((i = usb_ether_tx_list_init(USBDEV(sc->atu_dev),
   1862 	    sc->atu_cdata.atu_tx_chain, ATU_TX_LIST_CNT,
   1863 	    sc->atu_udev, sc->atu_ep[ATU_ENDPT_TX],
   1864 	    &sc->atu_cdata.atu_tx_free))) {
   1865 		printf("%s: tx list init failed\n", USBDEVNAME(sc->atu_dev));
   1866 		splx(s);
   1867 		return (i);
   1868 	}
   1869 
   1870 	/* Init RX ring */
   1871 	if ((i = usb_ether_rx_list_init(USBDEV(sc->atu_dev),
   1872 	    sc->atu_cdata.atu_rx_chain, ATU_RX_LIST_CNT,
   1873 	    sc->atu_udev, sc->atu_ep[ATU_ENDPT_RX]))) {
   1874 		printf("%s: rx list init failed\n", USBDEVNAME(sc->atu_dev));
   1875 		splx(s);
   1876 		return (i);
   1877 	}
   1878 
   1879 	/* Load the multicast filter. */
   1880 	/*atu_setmulti(sc); */
   1881 
   1882 	/* Start up the receive pipe. */
   1883 	for (i = 0; i < ATU_RX_LIST_CNT; i++) {
   1884 		c = &sc->atu_cdata.atu_rx_chain[i];
   1885 
   1886 		(void)usbd_map_buffer_mbuf(c->ue_xfer, c->ue_mbuf);
   1887 		usbd_setup_xfer(c->ue_xfer, sc->atu_ep[ATU_ENDPT_RX], c,
   1888 		    NULL /* XXX unused */, ATU_RX_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY,
   1889 		    USBD_NO_TIMEOUT, atu_rxeof);
   1890 		usbd_transfer(c->ue_xfer);
   1891 	}
   1892 
   1893 	DPRINTFN(10, ("%s: starting up using MAC=%s\n",
   1894 	    USBDEVNAME(sc->atu_dev), ether_sprintf(ic->ic_myaddr)));
   1895 
   1896 	/* Do initial setup */
   1897 	err = atu_initial_config(sc);
   1898 	if (err) {
   1899 		DPRINTF(("%s: initial config failed!\n",
   1900 		    USBDEVNAME(sc->atu_dev)));
   1901 		splx(s);
   1902 		return(EIO);
   1903 	}
   1904 	DPRINTFN(10, ("%s: initialised transceiver\n",
   1905 	    USBDEVNAME(sc->atu_dev)));
   1906 
   1907 	/* sc->atu_rxfilt = ATU_RXFILT_UNICAST|ATU_RXFILT_BROADCAST; */
   1908 
   1909 	/* If we want promiscuous mode, set the allframes bit. */
   1910 	/*
   1911 	if (ifp->if_flags & IFF_PROMISC)
   1912 		sc->atu_rxfilt |= ATU_RXFILT_PROMISC;
   1913 	*/
   1914 
   1915 	ifp->if_flags |= IFF_RUNNING;
   1916 	ifp->if_flags &= ~IFF_OACTIVE;
   1917 	splx(s);
   1918 
   1919 	/* XXX the following HAS to be replaced */
   1920 	s = splnet();
   1921 	err = ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
   1922 	if (err) {
   1923 		DPRINTFN(1, ("%s: atu_init: error calling "
   1924 		    "ieee80211_net_state", USBDEVNAME(sc->atu_dev)));
   1925 	}
   1926 	splx(s);
   1927 
   1928 	return 0;
   1929 }
   1930 
   1931 #ifdef ATU_DEBUG
   1932 void
   1933 atu_debug_print(struct atu_softc *sc)
   1934 {
   1935 	usbd_status		err;
   1936 	u_int8_t		tmp[32];
   1937 
   1938 	/* DEBUG */
   1939 	if ((err = atu_get_mib(sc, MIB_MAC_MGMT__CURRENT_BSSID, tmp)))
   1940 		return;
   1941 	DPRINTF(("%s: DEBUG: current BSSID=%s\n", USBDEVNAME(sc->atu_dev),
   1942 	    ether_sprintf(tmp)));
   1943 
   1944 	if ((err = atu_get_mib(sc, MIB_MAC_MGMT__BEACON_PERIOD, tmp)))
   1945 		return;
   1946 	DPRINTF(("%s: DEBUG: beacon period=%d\n", USBDEVNAME(sc->atu_dev),
   1947 	    tmp[0]));
   1948 
   1949 	if ((err = atu_get_mib(sc, MIB_MAC_WEP__PRIVACY_INVOKED, tmp)))
   1950 		return;
   1951 	DPRINTF(("%s: DEBUG: privacy invoked=%d\n", USBDEVNAME(sc->atu_dev),
   1952 	    tmp[0]));
   1953 
   1954 	if ((err = atu_get_mib(sc, MIB_MAC_WEP__ENCR_LEVEL, tmp)))
   1955 		return;
   1956 	DPRINTF(("%s: DEBUG: encr_level=%d\n", USBDEVNAME(sc->atu_dev),
   1957 	    tmp[0]));
   1958 
   1959 	if ((err = atu_get_mib(sc, MIB_MAC_WEP__ICV_ERROR_COUNT, tmp)))
   1960 		return;
   1961 	DPRINTF(("%s: DEBUG: icv error count=%d\n", USBDEVNAME(sc->atu_dev),
   1962 	    *(short *)tmp));
   1963 
   1964 	if ((err = atu_get_mib(sc, MIB_MAC_WEP__EXCLUDED_COUNT, tmp)))
   1965 		return;
   1966 	DPRINTF(("%s: DEBUG: wep excluded count=%d\n",
   1967 	    USBDEVNAME(sc->atu_dev), *(short *)tmp));
   1968 
   1969 	if ((err = atu_get_mib(sc, MIB_MAC_MGMT__POWER_MODE, tmp)))
   1970 		return;
   1971 	DPRINTF(("%s: DEBUG: power mode=%d\n", USBDEVNAME(sc->atu_dev),
   1972 	    tmp[0]));
   1973 
   1974 	if ((err = atu_get_mib(sc, MIB_PHY__CHANNEL, tmp)))
   1975 		return;
   1976 	DPRINTF(("%s: DEBUG: channel=%d\n", USBDEVNAME(sc->atu_dev), tmp[0]));
   1977 
   1978 	if ((err = atu_get_mib(sc, MIB_PHY__REG_DOMAIN, tmp)))
   1979 		return;
   1980 	DPRINTF(("%s: DEBUG: reg domain=%d\n", USBDEVNAME(sc->atu_dev),
   1981 	    tmp[0]));
   1982 
   1983 	if ((err = atu_get_mib(sc, MIB_LOCAL__SSID_SIZE, tmp)))
   1984 		return;
   1985 	DPRINTF(("%s: DEBUG: ssid size=%d\n", USBDEVNAME(sc->atu_dev),
   1986 	    tmp[0]));
   1987 
   1988 	if ((err = atu_get_mib(sc, MIB_LOCAL__BEACON_ENABLE, tmp)))
   1989 		return;
   1990 	DPRINTF(("%s: DEBUG: beacon enable=%d\n", USBDEVNAME(sc->atu_dev),
   1991 	    tmp[0]));
   1992 
   1993 	if ((err = atu_get_mib(sc, MIB_LOCAL__AUTO_RATE_FALLBACK, tmp)))
   1994 		return;
   1995 	DPRINTF(("%s: DEBUG: auto rate fallback=%d\n",
   1996 	    USBDEVNAME(sc->atu_dev), tmp[0]));
   1997 
   1998 	if ((err = atu_get_mib(sc, MIB_MAC_ADDR__ADDR, tmp)))
   1999 		return;
   2000 	DPRINTF(("%s: DEBUG: mac addr=%s\n", USBDEVNAME(sc->atu_dev),
   2001 	    ether_sprintf(tmp)));
   2002 
   2003 	if ((err = atu_get_mib(sc, MIB_MAC__DESIRED_SSID, tmp)))
   2004 		return;
   2005 	DPRINTF(("%s: DEBUG: desired ssid=%s\n", USBDEVNAME(sc->atu_dev),
   2006 	    tmp));
   2007 
   2008 	if ((err = atu_get_mib(sc, MIB_MAC_MGMT__CURRENT_ESSID, tmp)))
   2009 		return;
   2010 	DPRINTF(("%s: DEBUG: current ESSID=%s\n", USBDEVNAME(sc->atu_dev),
   2011 	    tmp));
   2012 }
   2013 #endif /* ATU_DEBUG */
   2014 
   2015 int
   2016 atu_ioctl(struct ifnet *ifp, u_long command, usb_ioctlarg_t data)
   2017 {
   2018 	struct atu_softc	*sc = ifp->if_softc;
   2019 	struct ifreq		*ifr = (struct ifreq *)data;
   2020 	struct ieee80211com	*ic = &sc->sc_ic;
   2021 	int			err = 0, s;
   2022 
   2023 	s = splnet();
   2024 	switch (command) {
   2025 	case SIOCSIFMEDIA:
   2026 	case SIOCGIFMEDIA:
   2027 		err = ifmedia_ioctl(ifp, ifr, &ic->ic_media, command);
   2028 		break;
   2029 
   2030 	default:
   2031 		DPRINTFN(15, ("%s: ieee80211_ioctl (%lu)\n",
   2032 		    USBDEVNAME(sc->atu_dev), command));
   2033 		err = ieee80211_ioctl(ic, command, data);
   2034 		break;
   2035 	}
   2036 
   2037 	if (err == ENETRESET) {
   2038 		if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) ==
   2039 		    (IFF_RUNNING|IFF_UP)) {
   2040 			DPRINTF(("%s: atu_ioctl(): netreset %lu\n",
   2041 			    USBDEVNAME(sc->atu_dev), command));
   2042 			ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
   2043 			atu_initial_config(sc);
   2044 			ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
   2045 		}
   2046 		err = 0;
   2047 	}
   2048 
   2049 	splx(s);
   2050 	return (err);
   2051 }
   2052 
   2053 void
   2054 atu_watchdog(struct ifnet *ifp)
   2055 {
   2056 	struct atu_softc	*sc = ifp->if_softc;
   2057 	struct ue_chain		*c;
   2058 	usbd_status		stat;
   2059 	int			cnt, s;
   2060 
   2061 	DPRINTF(("%s: atu_watchdog\n", USBDEVNAME(sc->atu_dev)));
   2062 
   2063 	ifp->if_timer = 0;
   2064 
   2065 	if (sc->sc_state != ATU_S_OK || (ifp->if_flags & IFF_RUNNING) == 0)
   2066 		return;
   2067 
   2068 	sc = ifp->if_softc;
   2069 	s = splnet();
   2070 	ifp->if_oerrors++;
   2071 	DPRINTF(("%s: watchdog timeout\n", USBDEVNAME(sc->atu_dev)));
   2072 
   2073 	/*
   2074 	 * TODO:
   2075 	 * we should change this since we have multiple TX tranfers...
   2076 	 */
   2077 	for (cnt = 0; cnt < ATU_TX_LIST_CNT; cnt++) {
   2078 		c = &sc->atu_cdata.atu_tx_chain[cnt];
   2079 		if (c->ue_mbuf) {
   2080 			usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL,
   2081 			    &stat);
   2082 			atu_txeof(c->ue_xfer, c, stat);
   2083 		}
   2084 	}
   2085 
   2086 	if (!IFQ_IS_EMPTY(&ifp->if_snd))
   2087 		atu_start(ifp);
   2088 	splx(s);
   2089 
   2090 	ieee80211_watchdog(&sc->sc_ic);
   2091 }
   2092 
   2093 /*
   2094  * Stop the adapter and free any mbufs allocated to the
   2095  * RX and TX lists.
   2096  */
   2097 void
   2098 atu_stop(struct ifnet *ifp, int disable)
   2099 {
   2100 	struct atu_softc	*sc = ifp->if_softc;
   2101 	struct ieee80211com	*ic = &sc->sc_ic;
   2102 	struct atu_cdata	*cd;
   2103 	usbd_status		err;
   2104 	int s;
   2105 
   2106 	s = splnet();
   2107 	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
   2108 	ifp->if_timer = 0;
   2109 
   2110 	usb_rem_task(sc->atu_udev, &sc->sc_task);
   2111 	ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
   2112 
   2113 	/* Stop transfers. */
   2114 	if (sc->atu_ep[ATU_ENDPT_RX] != NULL) {
   2115 		err = usbd_abort_pipe(sc->atu_ep[ATU_ENDPT_RX]);
   2116 		if (err) {
   2117 			DPRINTF(("%s: abort rx pipe failed: %s\n",
   2118 			    USBDEVNAME(sc->atu_dev), usbd_errstr(err)));
   2119 		}
   2120 	}
   2121 
   2122 	if (sc->atu_ep[ATU_ENDPT_TX] != NULL) {
   2123 		err = usbd_abort_pipe(sc->atu_ep[ATU_ENDPT_TX]);
   2124 		if (err) {
   2125 			DPRINTF(("%s: abort tx pipe failed: %s\n",
   2126 			    USBDEVNAME(sc->atu_dev), usbd_errstr(err)));
   2127 		}
   2128 	}
   2129 
   2130 	/* Free RX/TX/MGMT list resources. */
   2131 	cd = &sc->atu_cdata;
   2132 	usb_ether_rx_list_free(cd->atu_rx_chain, ATU_RX_LIST_CNT);
   2133 	usb_ether_tx_list_free(cd->atu_tx_chain, ATU_TX_LIST_CNT);
   2134 
   2135 	/* Close pipes. */
   2136 	if (sc->atu_ep[ATU_ENDPT_RX] != NULL) {
   2137 		err = usbd_close_pipe(sc->atu_ep[ATU_ENDPT_RX]);
   2138 		if (err) {
   2139 			DPRINTF(("%s: close rx pipe failed: %s\n",
   2140 			    USBDEVNAME(sc->atu_dev), usbd_errstr(err)));
   2141 		}
   2142 		sc->atu_ep[ATU_ENDPT_RX] = NULL;
   2143 	}
   2144 
   2145 	if (sc->atu_ep[ATU_ENDPT_TX] != NULL) {
   2146 		err = usbd_close_pipe(sc->atu_ep[ATU_ENDPT_TX]);
   2147 		if (err) {
   2148 			DPRINTF(("%s: close tx pipe failed: %s\n",
   2149 			    USBDEVNAME(sc->atu_dev), usbd_errstr(err)));
   2150 		}
   2151 		sc->atu_ep[ATU_ENDPT_TX] = NULL;
   2152 	}
   2153 
   2154 	/* Let's be nice and turn off the radio before we leave */
   2155 	atu_switch_radio(sc, 0);
   2156 
   2157 	splx(s);
   2158 }
   2159