path: root/drivers/net/usb/pegasus.c

/*
 *  Copyright (c) 1999-2013 Petko Manolov (petkan@nucleusys.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *	ChangeLog:
 *		....	Most of the time spent on reading sources & docs.
 *		v0.2.x	First official release for the Linux kernel.
 *		v0.3.0	Beutified and structured, some bugs fixed.
 *		v0.3.x	URBifying bulk requests and bugfixing. First relatively
 *			stable release. Still can touch device's registers only
 *			from top-halves.
 *		v0.4.0	Control messages remained unurbified are now URBs.
 *			Now we can touch the HW at any time.
 *		v0.4.9	Control urbs again use process context to wait. Argh...
 *			Some long standing bugs (enable_net_traffic) fixed.
 *			Also nasty trick about resubmiting control urb from
 *			interrupt context used. Please let me know how it
 *			behaves. Pegasus II support added since this version.
 *			TODO: suppressing HCD warnings spewage on disconnect.
 *		v0.4.13	Ethernet address is now set at probe(), not at open()
 *			time as this seems to break dhcpd.
 *		v0.5.0	branch to 2.5.x kernels
 *		v0.5.1	ethtool support added
 *		v0.5.5	rx socket buffers are in a pool and the their allocation
 *			is out of the interrupt routine.
 *		...
 *		v0.9.3	simplified [get|set]_register(s), async update registers
 *			logic revisited, receive skb_pool removed.
 */

#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/module.h>
#include <asm/byteorder.h>
#include <asm/uaccess.h>
#include "pegasus.h"

/*
 * Version Information
 */
#define DRIVER_VERSION "v0.9.3 (2013/04/25)"
#define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>"
#define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"

static const char driver_name[] = "pegasus";

#undef	PEGASUS_WRITE_EEPROM
#define	BMSR_MEDIA	(BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \
			BMSR_100FULL | BMSR_ANEGCAPABLE)

static bool loopback;
static bool mii_mode;
static char *devid;

static struct usb_eth_dev usb_dev_id[] = {
#define	PEGASUS_DEV(pn, vid, pid, flags)	\
	{.name = pn, .vendor = vid, .device = pid, .private = flags},
#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
	PEGASUS_DEV(pn, vid, pid, flags)
#include "pegasus.h"
#undef	PEGASUS_DEV
#undef	PEGASUS_DEV_CLASS
	{NULL, 0, 0, 0},
	{NULL, 0, 0, 0}
};

static struct usb_device_id pegasus_ids[] = {
#define	PEGASUS_DEV(pn, vid, pid, flags) \
	{.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid},
/*
 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product
 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to
 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one
 * case anyway, seeing as the pegasus is for "Wired" adaptors.
 */
#define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \
	{.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \
	.idVendor = vid, .idProduct = pid, .bDeviceClass = dclass},
#include "pegasus.h"
#undef	PEGASUS_DEV
#undef	PEGASUS_DEV_CLASS
	{},
	{}
};

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
module_param(loopback, bool, 0);
module_param(mii_mode, bool, 0);
module_param(devid, charp, 0);
MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)");
MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0");
MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'");

/* use ethtool to change the level for any given device */
static int msg_level = -1;
module_param(msg_level, int, 0);
MODULE_PARM_DESC(msg_level, "Override default message level");

MODULE_DEVICE_TABLE(usb, pegasus_ids);
static const struct net_device_ops pegasus_netdev_ops;

/*****/

static void