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

/****************************************************************
 *
 *     kaweth.c - driver for KL5KUSB101 based USB->Ethernet
 *
 *     (c) 2000 Interlan Communications
 *     (c) 2000 Stephane Alnet
 *     (C) 2001 Brad Hards
 *     (C) 2002 Oliver Neukum
 *
 *     Original author: The Zapman <zapman@interlan.net>
 *     Inspired by, and much credit goes to Michael Rothwell
 *     <rothwell@interlan.net> for the test equipment, help, and patience
 *     Based off of (and with thanks to) Petko Manolov's pegaus.c driver.
 *     Also many thanks to Joel Silverman and Ed Surprenant at Kawasaki
 *     for providing the firmware and driver resources.
 *
 *     This program is free software; you can redistribute it and/or
 *     modify it under the terms of the GNU General Public License as
 *     published by the Free Software Foundation; either version 2, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program; if not, write to the Free Software Foundation,
 *     Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 ****************************************************************/

/* TODO:
 * Fix in_interrupt() problem
 * Develop test procedures for USB net interfaces
 * Run test procedures
 * Fix bugs from previous two steps
 * Snoop other OSs for any tricks we're not doing
 * SMP locking
 * Reduce arbitrary timeouts
 * Smart multicast support
 * Temporary MAC change support
 * Tunable SOFs parameter - ioctl()?
 * Ethernet stats collection
 * Code formatting improvements
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/usb.h>
#include <linux/types.h>
#include <linux/ethtool.h>
#include <linux/dma-mapping.h>
#include <linux/wait.h>
#include <asm/uaccess.h>
#include <asm/semaphore.h>
#include <asm/byteorder.h>

#undef DEBUG

#include "kawethfw.h"

#define KAWETH_MTU			1514
#define KAWETH_BUF_SIZE			1664
#define KAWETH_TX_TIMEOUT		(5 * HZ)
#define KAWETH_SCRATCH_SIZE		32
#define KAWETH_FIRMWARE_BUF_SIZE	4096
#define KAWETH_CONTROL_TIMEOUT		(30 * HZ)

#define KAWETH_STATUS_BROKEN		0x0000001
#define KAWETH_STATUS_CLOSING		0x0000002
#define KAWETH_STATUS_SUSPENDING	0x0000004

#define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING)

#define KAWETH_PACKET_FILTER_PROMISCUOUS	0x01
#define KAWETH_PACKET_FILTER_ALL_MULTICAST	0x02
#define KAWETH_PACKET_FILTER_DIRECTED		0x04
#define KAWETH_PACKET_FILTER_BROADCAST		0x08
#define KAWETH_PACKET_FILTER_MULTICAST		0x10

/* Table 7 */
#define KAWETH_COMMAND_GET_ETHERNET_DESC	0x00
#define KAWETH_COMMAND_MULTICAST_FILTERS        0x01
#define KAWETH_COMMAND_SET_PACKET_FILTER	0x02
#define KAWETH_COMMAND_STATISTICS               0x03
#define KAWETH_COMMAND_SET_TEMP_MAC     	0x06
#define KAWETH_COMMAND_GET_TEMP_MAC             0x07
#define KAWETH_COMMAND_SET_URB_SIZE		0x08
#define KAWETH_COMMAND_SET_SOFS_WAIT		0x09
#define KAWETH_COMMAND_SCAN			0xFF

#define KAWETH_SOFS_TO_WAIT			0x05

#define INTBUFFERSIZE				4

#define STATE_OFFSET				0
#define STATE_MASK				0x40
#define	STATE_SHIFT				5

#define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED)


MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>");
MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
MODULE_LICENSE("GPL");

static const char driver_name[] = "kaweth";

static int kaweth_probe(
		struct usb_interface *intf,
		const struct usb_device_id *id	/* from id_table */
	);
static void kaweth_disconnect(struct usb_interface *intf);
static int kaweth_internal_control_msg(struct usb_device *usb_dev,
				       unsigned int pipe,
				       struct usb_ctrlrequest *cmd, void *data,
				       int len, int timeout);
static int kaweth_suspend(struct usb_interface *intf, pm_message_t message);
static int kaweth_resume(struct usb_interface *