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

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  Copyright (c) 1999-2021 Petko Manolov (petkan@nucleusys.com)
 *
 */

#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 <linux/uaccess.h>
#include "pegasus.h"

/*
 * Version Information
 */
#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)
#define CARRIER_CHECK_DELAY (2 * HZ)

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 async_ctrl_callback(struct urb *urb)
{
	struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
	int status = urb->status;

	if (status < 0)
		dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
	kfree(req);
	usb_free_urb(urb);
}

static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *<