drivers/staging/wlan-ng/prism2usb.c - linux - Git at Google

 #include "hfa384x_usb.c"
 #include "prism2mgmt.c"
 #include "prism2mib.c"
 #include "prism2sta.c"
 #include "prism2fw.c"

 #define PRISM_DEV(vid, pid, name)		\
 	{ USB_DEVICE(vid, pid),			\
 	.driver_info = (unsigned long)name }

 static struct usb_device_id usb_prism_tbl[] = {
 	PRISM_DEV(0x04bb, 0x0922, "IOData AirPort WN-B11/USBS"),
 	PRISM_DEV(0x07aa, 0x0012, "Corega Wireless LAN USB Stick-11"),
 	PRISM_DEV(0x09aa, 0x3642, "Prism2.x 11Mbps WLAN USB Adapter"),
 	PRISM_DEV(0x1668, 0x0408, "Actiontec Prism2.5 11Mbps WLAN USB Adapter"),
 	PRISM_DEV(0x1668, 0x0421, "Actiontec Prism2.5 11Mbps WLAN USB Adapter"),
 	PRISM_DEV(0x1915, 0x2236, "Linksys WUSB11v3.0 11Mbps WLAN USB Adapter"),
 	PRISM_DEV(0x066b, 0x2212, "Linksys WUSB11v2.5 11Mbps WLAN USB Adapter"),
 	PRISM_DEV(0x066b, 0x2213, "Linksys WUSB12v1.1 11Mbps WLAN USB Adapter"),
 	PRISM_DEV(0x0411, 0x0016, "Melco WLI-USB-S11 11Mbps WLAN Adapter"),
 	PRISM_DEV(0x08de, 0x7a01, "PRISM25 IEEE 802.11 Mini USB Adapter"),
 	PRISM_DEV(0x8086, 0x1111, "Intel PRO/Wireless 2011B LAN USB Adapter"),
 	PRISM_DEV(0x0d8e, 0x7a01, "PRISM25 IEEE 802.11 Mini USB Adapter"),
 	PRISM_DEV(0x045e, 0x006e, "Microsoft MN510 Wireless USB Adapter"),
 	PRISM_DEV(0x0967, 0x0204, "Acer Warplink USB Adapter"),
 	PRISM_DEV(0x0cde, 0x0002, "Z-Com 725/726 Prism2.5 USB/USB Integrated"),
 	PRISM_DEV(0x0cde, 0x0005, "Z-Com Xl735 Wireless 802.11b USB Adapter"),
 	PRISM_DEV(0x413c, 0x8100, "Dell TrueMobile 1180 Wireless USB Adapter"),
 	PRISM_DEV(0x0b3b, 0x1601, "ALLNET 0193 11Mbps WLAN USB Adapter"),
 	PRISM_DEV(0x0b3b, 0x1602, "ZyXEL ZyAIR B200 Wireless USB Adapter"),
 	PRISM_DEV(0x0baf, 0x00eb, "USRobotics USR1120 Wireless USB Adapter"),
 	PRISM_DEV(0x0411, 0x0027, "Melco WLI-USB-KS11G 11Mbps WLAN Adapter"),
 	PRISM_DEV(0x04f1, 0x3009, "JVC MP-XP7250 Builtin USB WLAN Adapter"),
 	PRISM_DEV(0x0846, 0x4110, "NetGear MA111"),
 	PRISM_DEV(0x03f3, 0x0020, "Adaptec AWN-8020 USB WLAN Adapter"),
 	PRISM_DEV(0x2821, 0x3300, "ASUS-WL140 Wireless USB Adapter"),
 	PRISM_DEV(0x2001, 0x3700, "DWL-122 Wireless USB Adapter"),
 	PRISM_DEV(0x2001, 0x3702, "DWL-120 Rev F Wireless USB Adapter"),
 	PRISM_DEV(0x50c2, 0x4013, "Averatec USB WLAN Adapter"),
 	PRISM_DEV(0x2c02, 0x14ea, "Planex GW-US11H WLAN USB Adapter"),
 	PRISM_DEV(0x124a, 0x168b, "Airvast PRISM3 WLAN USB Adapter"),
 	PRISM_DEV(0x083a, 0x3503, "T-Sinus 111 USB WLAN Adapter"),
 	PRISM_DEV(0x2821, 0x3300, "Hawking HighDB USB Adapter"),
 	PRISM_DEV(0x0411, 0x0044, "Melco WLI-USB-KB11 11Mbps WLAN Adapter"),
 	PRISM_DEV(0x1668, 0x6106, "ROPEX FreeLan 802.11b USB Adapter"),
 	PRISM_DEV(0x124a, 0x4017, "Pheenet WL-503IA 802.11b USB Adapter"),
 	PRISM_DEV(0x0bb2, 0x0302, "Ambit Microsystems Corp."),
 	PRISM_DEV(0x9016, 0x182d, "Sitecom WL-022 802.11b USB Adapter"),
 	PRISM_DEV(0x0543, 0x0f01,
 		"ViewSonic Airsync USB Adapter 11Mbps (Prism2.5)"),
 	PRISM_DEV(0x067c, 0x1022,
 		"Siemens SpeedStream 1022 11Mbps WLAN USB Adapter"),
 	PRISM_DEV(0x049f, 0x0033,
 		"Compaq/Intel W100 PRO/Wireless 11Mbps multiport WLAN Adapter"),
 	{ } /* terminator */
 };
 MODULE_DEVICE_TABLE(usb, usb_prism_tbl);

 static int prism2sta_probe_usb(struct usb_interface *interface,
 			       const struct usb_device_id *id)
 {
 	struct usb_device *dev;

 	wlandevice_t *wlandev = NULL;
 	hfa384x_t *hw = NULL;
 	int result = 0;

 	dev = interface_to_usbdev(interface);
 	wlandev = create_wlan();
 	if (wlandev == NULL) {
 		dev_err(&interface->dev, "Memory allocation failure.\n");
 		result = -EIO;
 		goto failed;
 	}
 	hw = wlandev->priv;

 	if (wlan_setup(wlandev, &(interface->dev)) != 0) {
 		dev_err(&interface->dev, "wlan_setup() failed.\n");
 		result = -EIO;
 		goto failed;
 	}

 	/* Initialize the hw data */
 	hfa384x_create(hw, dev);
 	hw->wlandev = wlandev;

 	/* Register the wlandev, this gets us a name and registers the
 	 * linux netdevice.
 	 */
 	SET_NETDEV_DEV(wlandev->netdev, &(interface->dev));

 	/* Do a chip-level reset on the MAC */
 	if (prism2_doreset) {
 		result = hfa384x_corereset(hw,
 					   prism2_reset_holdtime,
 					   prism2_reset_settletime, 0);
 		if (result != 0) {
 			result = -EIO;
 			dev_err(&interface->dev,
 				"hfa384x_corereset() failed.\n");
 			goto failed_reset;
 		}
 	}

 	usb_get_dev(dev);

 	wlandev->msdstate = WLAN_MSD_HWPRESENT;

 	/* Try and load firmware, then enable card before we register */
 	prism2_fwtry(dev, wlandev);
 	prism2sta_ifstate(wlandev, P80211ENUM_ifstate_enable);

 	if (register_wlandev(wlandev) != 0) {
 		dev_err(&interface->dev, "register_wlandev() failed.\n");
 		result = -EIO;
 		goto failed_register;
 	}

 	goto done;

 failed_register:
 	usb_put_dev(dev);
 failed_reset:
 	wlan_unsetup(wlandev);
 failed:
 	kfree(wlandev);
 	kfree(hw);
 	wlandev = NULL;

 done:
 	usb_set_intfdata(interface, wlandev);
 	return result;
 }

 static void prism2sta_disconnect_usb(struct usb_interface *interface)
 {
 	wlandevice_t *wlandev;

 	wlandev = (wlandevice_t *)usb_get_intfdata(interface);
 	if (wlandev != NULL) {
 		LIST_HEAD(cleanlist);
 		struct list_head *entry;
 		struct list_head *temp;
 		unsigned long flags;

 		hfa384x_t *hw = wlandev->priv;

 		if (!hw)
 			goto exit;

 		spin_lock_irqsave(&hw->ctlxq.lock, flags);

 		p80211netdev_hwremoved(wlandev);
 		list_splice_init(&hw->ctlxq.reapable, &cleanlist);
 		list_splice_init(&hw->ctlxq.completing, &cleanlist);
 		list_splice_init(&hw->ctlxq.pending, &cleanlist);
 		list_splice_init(&hw->ctlxq.active, &cleanlist);

 		spin_unlock_irqrestore(&hw->ctlxq.lock, flags);

 		/* There's no hardware to shutdown, but the driver
 		 * might have some tasks or tasklets that must be
 		 * stopped before we can tear everything down.
 		 */
 		prism2sta_ifstate(wlandev, P80211ENUM_ifstate_disable);

 		del_singleshot_timer_sync(&hw->throttle);
 		del_singleshot_timer_sync(&hw->reqtimer);
 		del_singleshot_timer_sync(&hw->resptimer);

 		/* Unlink all the URBs. This "removes the wheels"
 		 * from the entire CTLX handling mechanism.
 		 */
 		usb_kill_urb(&hw->rx_urb);
 		usb_kill_urb(&hw->tx_urb);
 		usb_kill_urb(&hw->ctlx_urb);

 		tasklet_kill(&hw->completion_bh);
 		tasklet_kill(&hw->reaper_bh);

 		flush_scheduled_work();

 		/* Now we complete any outstanding commands
 		 * and tell everyone who is waiting for their
 		 * responses that we have shut down.
 		 */
 		list_for_each(entry, &cleanlist) {
 			hfa384x_usbctlx_t *ctlx;

 			ctlx = list_entry(entry, hfa384x_usbctlx_t, list);
 			complete(&ctlx->done);
 		}

 		/* Give any outstanding synchronous commands
 		 * a chance to complete. All they need to do
 		 * is "wake up", so that's easy.
 		 * (I'd like a better way to do this, really.)
 		 */
 		msleep(100);

 		/* Now delete the CTLXs, because no-one else can now. */
 		list_for_each_safe(entry, temp, &cleanlist) {
 			hfa384x_usbctlx_t *ctlx;

 			ctlx = list_entry(entry, hfa384x_usbctlx_t, list);
 			kfree(ctlx);
 		}

 		/* Unhook the wlandev */
 		unregister_wlandev(wlandev);
 		wlan_unsetup(wlandev);

 		usb_put_dev(hw->usb);

 		hfa384x_destroy(hw);
 		kfree(hw);

 		kfree(wlandev);
 	}

 exit:
 	usb_set_intfdata(interface, NULL);
 }

 #ifdef CONFIG_PM
 static int prism2sta_suspend(struct usb_interface *interface,
 				pm_message_t message)
 {
 	hfa384x_t *hw = NULL;
 	wlandevice_t *wlandev;

 	wlandev = (wlandevice_t *)usb_get_intfdata(interface);
 	if (!wlandev)
 		return -ENODEV;

 	hw = wlandev->priv;
 	if (!hw)
 		return -ENODEV;

 	prism2sta_ifstate(wlandev, P80211ENUM_ifstate_disable);

 	usb_kill_urb(&hw->rx_urb);
 	usb_kill_urb(&hw->tx_urb);
 	usb_kill_urb(&hw->ctlx_urb);

 	return 0;
 }

 static int prism2sta_resume(struct usb_interface *interface)
 {
 	int result = 0;
 	hfa384x_t *hw = NULL;
 	wlandevice_t *wlandev;

 	wlandev = (wlandevice_t *)usb_get_intfdata(interface);
 	if (!wlandev)
 		return -ENODEV;

 	hw = wlandev->priv;
 	if (!hw)
 		return -ENODEV;

 	/* Do a chip-level reset on the MAC */
 	if (prism2_doreset) {
 		result = hfa384x_corereset(hw,
 					   prism2_reset_holdtime,
 					   prism2_reset_settletime, 0);
 		if (result != 0) {
 			unregister_wlandev(wlandev);
 			hfa384x_destroy(hw);
 			dev_err(&interface->dev, "hfa384x_corereset() failed.\n");
 			kfree(wlandev);
 			kfree(hw);
 			wlandev = NULL;
 			return -ENODEV;
 		}
 	}

 	prism2sta_ifstate(wlandev, P80211ENUM_ifstate_enable);

 	return 0;
 }
 #else
 #define prism2sta_suspend NULL
 #define prism2sta_resume NULL
 #endif /* CONFIG_PM */

 static struct usb_driver prism2_usb_driver = {
 	.name = "prism2_usb",
 	.probe = prism2sta_probe_usb,
 	.disconnect = prism2sta_disconnect_usb,
 	.id_table = usb_prism_tbl,
 	.suspend = prism2sta_suspend,
 	.resume = prism2sta_resume,
 	.reset_resume = prism2sta_resume,
 	/* fops, minor? */
 };

 module_usb_driver(prism2_usb_driver);
	#include "hfa384x_usb.c"
	#include "prism2mgmt.c"
	#include "prism2mib.c"
	#include "prism2sta.c"
	#include "prism2fw.c"

	#define PRISM_DEV(vid, pid, name) \
	{ USB_DEVICE(vid, pid), \
	.driver_info = (unsigned long)name }

	static struct usb_device_id usb_prism_tbl[] = {
	PRISM_DEV(0x04bb, 0x0922, "IOData AirPort WN-B11/USBS"),
	PRISM_DEV(0x07aa, 0x0012, "Corega Wireless LAN USB Stick-11"),
	PRISM_DEV(0x09aa, 0x3642, "Prism2.x 11Mbps WLAN USB Adapter"),
	PRISM_DEV(0x1668, 0x0408, "Actiontec Prism2.5 11Mbps WLAN USB Adapter"),
	PRISM_DEV(0x1668, 0x0421, "Actiontec Prism2.5 11Mbps WLAN USB Adapter"),
	PRISM_DEV(0x1915, 0x2236, "Linksys WUSB11v3.0 11Mbps WLAN USB Adapter"),
	PRISM_DEV(0x066b, 0x2212, "Linksys WUSB11v2.5 11Mbps WLAN USB Adapter"),
	PRISM_DEV(0x066b, 0x2213, "Linksys WUSB12v1.1 11Mbps WLAN USB Adapter"),
	PRISM_DEV(0x0411, 0x0016, "Melco WLI-USB-S11 11Mbps WLAN Adapter"),
	PRISM_DEV(0x08de, 0x7a01, "PRISM25 IEEE 802.11 Mini USB Adapter"),
	PRISM_DEV(0x8086, 0x1111, "Intel PRO/Wireless 2011B LAN USB Adapter"),
	PRISM_DEV(0x0d8e, 0x7a01, "PRISM25 IEEE 802.11 Mini USB Adapter"),
	PRISM_DEV(0x045e, 0x006e, "Microsoft MN510 Wireless USB Adapter"),
	PRISM_DEV(0x0967, 0x0204, "Acer Warplink USB Adapter"),
	PRISM_DEV(0x0cde, 0x0002, "Z-Com 725/726 Prism2.5 USB/USB Integrated"),
	PRISM_DEV(0x0cde, 0x0005, "Z-Com Xl735 Wireless 802.11b USB Adapter"),
	PRISM_DEV(0x413c, 0x8100, "Dell TrueMobile 1180 Wireless USB Adapter"),
	PRISM_DEV(0x0b3b, 0x1601, "ALLNET 0193 11Mbps WLAN USB Adapter"),
	PRISM_DEV(0x0b3b, 0x1602, "ZyXEL ZyAIR B200 Wireless USB Adapter"),
	PRISM_DEV(0x0baf, 0x00eb, "USRobotics USR1120 Wireless USB Adapter"),
	PRISM_DEV(0x0411, 0x0027, "Melco WLI-USB-KS11G 11Mbps WLAN Adapter"),
	PRISM_DEV(0x04f1, 0x3009, "JVC MP-XP7250 Builtin USB WLAN Adapter"),
	PRISM_DEV(0x0846, 0x4110, "NetGear MA111"),
	PRISM_DEV(0x03f3, 0x0020, "Adaptec AWN-8020 USB WLAN Adapter"),
	PRISM_DEV(0x2821, 0x3300, "ASUS-WL140 Wireless USB Adapter"),
	PRISM_DEV(0x2001, 0x3700, "DWL-122 Wireless USB Adapter"),
	PRISM_DEV(0x2001, 0x3702, "DWL-120 Rev F Wireless USB Adapter"),
	PRISM_DEV(0x50c2, 0x4013, "Averatec USB WLAN Adapter"),
	PRISM_DEV(0x2c02, 0x14ea, "Planex GW-US11H WLAN USB Adapter"),
	PRISM_DEV(0x124a, 0x168b, "Airvast PRISM3 WLAN USB Adapter"),
	PRISM_DEV(0x083a, 0x3503, "T-Sinus 111 USB WLAN Adapter"),
	PRISM_DEV(0x2821, 0x3300, "Hawking HighDB USB Adapter"),
	PRISM_DEV(0x0411, 0x0044, "Melco WLI-USB-KB11 11Mbps WLAN Adapter"),
	PRISM_DEV(0x1668, 0x6106, "ROPEX FreeLan 802.11b USB Adapter"),
	PRISM_DEV(0x124a, 0x4017, "Pheenet WL-503IA 802.11b USB Adapter"),
	PRISM_DEV(0x0bb2, 0x0302, "Ambit Microsystems Corp."),
	PRISM_DEV(0x9016, 0x182d, "Sitecom WL-022 802.11b USB Adapter"),
	PRISM_DEV(0x0543, 0x0f01,
	"ViewSonic Airsync USB Adapter 11Mbps (Prism2.5)"),
	PRISM_DEV(0x067c, 0x1022,
	"Siemens SpeedStream 1022 11Mbps WLAN USB Adapter"),
	PRISM_DEV(0x049f, 0x0033,
	"Compaq/Intel W100 PRO/Wireless 11Mbps multiport WLAN Adapter"),
	{ } /* terminator */
	};
	MODULE_DEVICE_TABLE(usb, usb_prism_tbl);

	static int prism2sta_probe_usb(struct usb_interface *interface,
	const struct usb_device_id *id)
	{
	struct usb_device *dev;

	wlandevice_t *wlandev = NULL;
	hfa384x_t *hw = NULL;
	int result = 0;

	dev = interface_to_usbdev(interface);
	wlandev = create_wlan();
	if (wlandev == NULL) {
	dev_err(&interface->dev, "Memory allocation failure.\n");
	result = -EIO;
	goto failed;
	}
	hw = wlandev->priv;

	if (wlan_setup(wlandev, &(interface->dev)) != 0) {
	dev_err(&interface->dev, "wlan_setup() failed.\n");
	result = -EIO;
	goto failed;
	}

	/* Initialize the hw data */
	hfa384x_create(hw, dev);
	hw->wlandev = wlandev;

	/* Register the wlandev, this gets us a name and registers the
	* linux netdevice.
	*/
	SET_NETDEV_DEV(wlandev->netdev, &(interface->dev));

	/* Do a chip-level reset on the MAC */
	if (prism2_doreset) {
	result = hfa384x_corereset(hw,
	prism2_reset_holdtime,
	prism2_reset_settletime, 0);
	if (result != 0) {
	result = -EIO;
	dev_err(&interface->dev,
	"hfa384x_corereset() failed.\n");
	goto failed_reset;
	}
	}

	usb_get_dev(dev);

	wlandev->msdstate = WLAN_MSD_HWPRESENT;

	/* Try and load firmware, then enable card before we register */
	prism2_fwtry(dev, wlandev);
	prism2sta_ifstate(wlandev, P80211ENUM_ifstate_enable);

	if (register_wlandev(wlandev) != 0) {
	dev_err(&interface->dev, "register_wlandev() failed.\n");
	result = -EIO;
	goto failed_register;
	}

	goto done;

	failed_register:
	usb_put_dev(dev);
	failed_reset:
	wlan_unsetup(wlandev);
	failed:
	kfree(wlandev);
	kfree(hw);
	wlandev = NULL;

	done:
	usb_set_intfdata(interface, wlandev);
	return result;
	}

	static void prism2sta_disconnect_usb(struct usb_interface *interface)
	{
	wlandevice_t *wlandev;

	wlandev = (wlandevice_t *)usb_get_intfdata(interface);
	if (wlandev != NULL) {
	LIST_HEAD(cleanlist);
	struct list_head *entry;
	struct list_head *temp;
	unsigned long flags;

	hfa384x_t *hw = wlandev->priv;

	if (!hw)
	goto exit;

	spin_lock_irqsave(&hw->ctlxq.lock, flags);

	p80211netdev_hwremoved(wlandev);
	list_splice_init(&hw->ctlxq.reapable, &cleanlist);
	list_splice_init(&hw->ctlxq.completing, &cleanlist);
	list_splice_init(&hw->ctlxq.pending, &cleanlist);
	list_splice_init(&hw->ctlxq.active, &cleanlist);

	spin_unlock_irqrestore(&hw->ctlxq.lock, flags);

	/* There's no hardware to shutdown, but the driver
	* might have some tasks or tasklets that must be
	* stopped before we can tear everything down.
	*/
	prism2sta_ifstate(wlandev, P80211ENUM_ifstate_disable);

	del_singleshot_timer_sync(&hw->throttle);
	del_singleshot_timer_sync(&hw->reqtimer);
	del_singleshot_timer_sync(&hw->resptimer);

	/* Unlink all the URBs. This "removes the wheels"
	* from the entire CTLX handling mechanism.
	*/
	usb_kill_urb(&hw->rx_urb);
	usb_kill_urb(&hw->tx_urb);
	usb_kill_urb(&hw->ctlx_urb);

	tasklet_kill(&hw->completion_bh);
	tasklet_kill(&hw->reaper_bh);

	flush_scheduled_work();

	/* Now we complete any outstanding commands
	* and tell everyone who is waiting for their
	* responses that we have shut down.
	*/
	list_for_each(entry, &cleanlist) {
	hfa384x_usbctlx_t *ctlx;

	ctlx = list_entry(entry, hfa384x_usbctlx_t, list);
	complete(&ctlx->done);
	}

	/* Give any outstanding synchronous commands
	* a chance to complete. All they need to do
	* is "wake up", so that's easy.
	* (I'd like a better way to do this, really.)
	*/
	msleep(100);

	/* Now delete the CTLXs, because no-one else can now. */
	list_for_each_safe(entry, temp, &cleanlist) {
	hfa384x_usbctlx_t *ctlx;

	ctlx = list_entry(entry, hfa384x_usbctlx_t, list);
	kfree(ctlx);
	}

	/* Unhook the wlandev */
	unregister_wlandev(wlandev);
	wlan_unsetup(wlandev);

	usb_put_dev(hw->usb);

	hfa384x_destroy(hw);
	kfree(hw);

	kfree(wlandev);
	}

	exit:
	usb_set_intfdata(interface, NULL);
	}

	#ifdef CONFIG_PM
	static int prism2sta_suspend(struct usb_interface *interface,
	pm_message_t message)
	{
	hfa384x_t *hw = NULL;
	wlandevice_t *wlandev;

	wlandev = (wlandevice_t *)usb_get_intfdata(interface);
	if (!wlandev)
	return -ENODEV;

	hw = wlandev->priv;
	if (!hw)
	return -ENODEV;

	prism2sta_ifstate(wlandev, P80211ENUM_ifstate_disable);

	usb_kill_urb(&hw->rx_urb);
	usb_kill_urb(&hw->tx_urb);
	usb_kill_urb(&hw->ctlx_urb);

	return 0;
	}

	static int prism2sta_resume(struct usb_interface *interface)
	{
	int result = 0;
	hfa384x_t *hw = NULL;
	wlandevice_t *wlandev;

	wlandev = (wlandevice_t *)usb_get_intfdata(interface);
	if (!wlandev)
	return -ENODEV;

	hw = wlandev->priv;
	if (!hw)
	return -ENODEV;

	/* Do a chip-level reset on the MAC */
	if (prism2_doreset) {
	result = hfa384x_corereset(hw,
	prism2_reset_holdtime,
	prism2_reset_settletime, 0);
	if (result != 0) {
	unregister_wlandev(wlandev);
	hfa384x_destroy(hw);
	dev_err(&interface->dev, "hfa384x_corereset() failed.\n");
	kfree(wlandev);
	kfree(hw);
	wlandev = NULL;
	return -ENODEV;
	}
	}

	prism2sta_ifstate(wlandev, P80211ENUM_ifstate_enable);

	return 0;
	}
	#else
	#define prism2sta_suspend NULL
	#define prism2sta_resume NULL
	#endif /* CONFIG_PM */

	static struct usb_driver prism2_usb_driver = {
	.name = "prism2_usb",
	.probe = prism2sta_probe_usb,
	.disconnect = prism2sta_disconnect_usb,
	.id_table = usb_prism_tbl,
	.suspend = prism2sta_suspend,
	.resume = prism2sta_resume,
	.reset_resume = prism2sta_resume,
	/* fops, minor? */
	};

	module_usb_driver(prism2_usb_driver);