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staging: ozwpan: Added driver entry code

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This series of patches adds the Ozmo USB over WiFi driver to the
driver staging directory. This is a driver for a virtual USB HCD
and uses an L2 network protocol to talk to the device.
This patch adds the driver entry code and a README file with more
details.

Signed-off-by: Chris Kelly <ckelly@ozmodevices.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chris Kelly 2012-02-20 21:11:17 +00:00 committed by Greg Kroah-Hartman
parent 3e809144ef
commit 62450bca86
3 changed files with 113 additions and 0 deletions
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25
drivers/staging/ozwpan/README Normal file
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OZWPAN USB Host Controller Driver
---------------------------------
This driver is a USB HCD driver that does not have an associated a physical
device but instead uses Wi-Fi to communicate with the wireless peripheral.
The USB requests are converted into a layer 2 network protocol and transmitted
on the network using an ethertype (0x892e) regestered to Ozmo Device Inc.
This driver is compatible with existing wireless devices that use Ozmo Devices
technology.
To operate the driver must be bound to a suitable network interface. This can
be done when the module is loaded (specifying the name of the network interface
as a paramter - e.g. 'insmod ozwpan g_net_dev=go0') or can be bound after
loading using an ioctl call. See the ozappif.h file and the ioctls
OZ_IOCTL_ADD_BINDING and OZ_IOCTL_REMOVE_BINDING.
The devices connect to the host use Wi-Fi Direct so a network card that supports
Wi-Fi direct is required. A recent version (0.8.x or later) version of the
wpa_supplicant can be used to setup the network interface to create a persistent
autonomous group (for older pre-WFD peripherals) or put in a listen state to
allow group negotiation to occur for more recent devices that support WFD.
The protocol used over the network does not directly mimic the USB bus
transactions as this would be rather busy and inefficient. Instead the chapter 9
requests are converted into a request/response pair of messages. (See
ozprotocol.h for data structures used in the protocol).

28
drivers/staging/ozwpan/ozconfig.h Normal file
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/* -----------------------------------------------------------------------------
* Copyright (c) 2011 Ozmo Inc
* Released under the GNU General Public License Version 2 (GPLv2).
* ---------------------------------------------------------------------------*/
#ifndef _OZCONFIG_H
#define _OZCONFIG_H
/* #define WANT_DEBUG_KMALLOC */
/* #define WANT_TRACE */
#ifdef WANT_TRACE
#define WANT_VERBOSE_TRACE
#endif /* #ifdef WANT_TRACE */
/* #define WANT_URB_PARANOIA */
/* #define WANT_PRE_2_6_39 */
#define WANT_EVENT_TRACE
/* These defines determine what verbose trace is displayed. */
#ifdef WANT_VERBOSE_TRACE
/* #define WANT_TRACE_STREAM */
/* #define WANT_TRACE_URB */
/* #define WANT_TRACE_CTRL_DETAIL */
#define WANT_TRACE_HUB
/* #define WANT_TRACE_RX_FRAMES */
/* #define WANT_TRACE_TX_FRAMES */
#endif /* WANT_VERBOSE_TRACE */
#endif /* _OZCONFIG_H */

60
drivers/staging/ozwpan/ozmain.c Normal file
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/* -----------------------------------------------------------------------------
* Copyright (c) 2011 Ozmo Inc
* Released under the GNU General Public License Version 2 (GPLv2).
* -----------------------------------------------------------------------------
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/timer.h>
#include <linux/sched.h>
#include <linux/netdevice.h>
#include <linux/errno.h>
#include <linux/ieee80211.h>
#include "ozconfig.h"
#include "ozpd.h"
#include "ozproto.h"
#include "ozcdev.h"
#include "ozalloc.h"
#include "oztrace.h"
#include "ozevent.h"
/*------------------------------------------------------------------------------
* The name of the 802.11 mac device. Empty string is the default value but a
* value can be supplied as a parameter to the module. An empty string means
* bind to nothing. '*' means bind to all netcards - this includes non-802.11
* netcards. Bindings can be added later using an IOCTL.
*/
char *g_net_dev = "";
/*------------------------------------------------------------------------------
* Context: process
*/
static int __init ozwpan_init(void)
{
oz_event_init();
oz_cdev_register();
oz_protocol_init(g_net_dev);
oz_app_enable(OZ_APPID_USB, 1);
oz_apps_init();
return 0;
}
/*------------------------------------------------------------------------------
* Context: process
*/
static void __exit ozwpan_exit(void)
{
oz_protocol_term();
oz_apps_term();
oz_cdev_deregister();
oz_trace_leaks();
oz_event_term();
}
/*------------------------------------------------------------------------------
*/
module_param(g_net_dev, charp, S_IRUGO);
module_init(ozwpan_init);
module_exit(ozwpan_exit);
MODULE_AUTHOR("Chris Kelly");
MODULE_DESCRIPTION("Ozmo Devices USB over WiFi hcd driver");
MODULE_VERSION("1.0.8");
MODULE_LICENSE("GPL");