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f4d340cf86
This "obvious" one-liner is needed to recognize Zaurus SL 6000; it just checks two GUIDs not just one. OSDL bugids #4512 and #4545 seem to be duplicates of this report. From: Gerald Skerbitz <gsker@tcfreenet.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
4243 lines
113 KiB
C
4243 lines
113 KiB
C
/*
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* USB Networking Links
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* Copyright (C) 2000-2005 by David Brownell <dbrownell@users.sourceforge.net>
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* Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
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* Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
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* Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
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* Copyright (c) 2002-2003 TiVo Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
|
||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* This is a generic "USB networking" framework that works with several
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* kinds of full and high speed networking devices:
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*
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* + USB host-to-host "network cables", used for IP-over-USB links.
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* These are often used for Laplink style connectivity products.
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* - AnchorChip 2720
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* - Belkin, eTEK (interops with Win32 drivers)
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* - GeneSys GL620USB-A
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* - NetChip 1080 (interoperates with NetChip Win32 drivers)
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* - Prolific PL-2301/2302 (replaces "plusb" driver)
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* - KC Technology KC2190
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*
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* + Smart USB devices can support such links directly, using Internet
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* standard protocols instead of proprietary host-to-device links.
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* - Linux PDAs like iPaq, Yopy, and Zaurus
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* - The BLOB boot loader (for diskless booting)
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* - Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers
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* - Devices using EPSON's sample USB firmware
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* - CDC-Ethernet class devices, such as many cable modems
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*
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* + Adapters to networks such as Ethernet.
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* - AX8817X based USB 2.0 products
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*
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* Links to these devices can be bridged using Linux Ethernet bridging.
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* With minor exceptions, these all use similar USB framing for network
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* traffic, but need different protocols for control traffic.
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*
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* USB devices can implement their side of this protocol at the cost
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* of two bulk endpoints; it's not restricted to "cable" applications.
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* See the SA1110, Zaurus, or EPSON device/client support in this driver;
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* slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or
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* "g_ether" (in the Linux "gadget" framework) implement that behavior
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* within devices.
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*
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*
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* CHANGELOG:
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*
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* 13-sep-2000 experimental, new
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* 10-oct-2000 usb_device_id table created.
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* 28-oct-2000 misc fixes; mostly, discard more TTL-mangled rx packets.
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* 01-nov-2000 usb_device_id table and probing api update by
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* Adam J. Richter <adam@yggdrasil.com>.
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* 18-dec-2000 (db) tx watchdog, "net1080" renaming to "usbnet", device_info
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* and prolific support, isolate net1080-specific bits, cleanup.
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* fix unlink_urbs oops in D3 PM resume code path.
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*
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* 02-feb-2001 (db) fix tx skb sharing, packet length, match_flags, ...
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* 08-feb-2001 stubbed in "linuxdev", maybe the SA-1100 folk can use it;
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* AnchorChips 2720 support (from spec) for testing;
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* fix bit-ordering problem with ethernet multicast addr
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* 19-feb-2001 Support for clearing halt conditions. SA1100 UDC support
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* updates. Oleg Drokin (green@iXcelerator.com)
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* 25-mar-2001 More SA-1100 updates, including workaround for ip problem
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* expecting cleared skb->cb and framing change to match latest
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* handhelds.org version (Oleg). Enable device IDs from the
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* Win32 Belkin driver; other cleanups (db).
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* 16-jul-2001 Bugfixes for uhci oops-on-unplug, Belkin support, various
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* cleanups for problems not yet seen in the field. (db)
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* 17-oct-2001 Handle "Advance USBNET" product, like Belkin/eTEK devices,
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* from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>;
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* rx unlinks somehow weren't async; minor cleanup.
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* 03-nov-2001 Merged GeneSys driver; original code from Jiun-Jie Huang
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* <huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec
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* <utx@penguin.cz>. Made framing options (NetChip/GeneSys)
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* tie mostly to (sub)driver info. Workaround some PL-2302
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* chips that seem to reject SET_INTERFACE requests.
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*
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* 06-apr-2002 Added ethtool support, based on a patch from Brad Hards.
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* Level of diagnostics is more configurable; they use device
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* location (usb_device->devpath) instead of address (2.5).
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* For tx_fixup, memflags can't be NOIO.
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* 07-may-2002 Generalize/cleanup keventd support, handling rx stalls (mostly
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* for USB 2.0 TTs) and memory shortages (potential) too. (db)
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* Use "locally assigned" IEEE802 address space. (Brad Hards)
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* 18-oct-2002 Support for Zaurus (Pavel Machek), related cleanup (db).
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* 14-dec-2002 Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix,
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* cleanups and stubbed PXA-250 support (db), fix for framing
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* issues on Z, net1080, and gl620a (Toby Milne)
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*
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* 31-mar-2003 Use endpoint descriptors: high speed support, simpler sa1100
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* vs pxa25x, and CDC Ethernet. Throttle down log floods on
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* disconnect; other cleanups. (db) Flush net1080 fifos
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* after several sequential framing errors. (Johannes Erdfelt)
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* 22-aug-2003 AX8817X support (Dave Hollis).
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* 14-jun-2004 Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan
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* (Neil Bortnak)
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* 03-nov-2004 Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell)
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*
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* 01-feb-2005 AX88772 support (Phil Chang & Dave Hollis)
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*-------------------------------------------------------------------------*/
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// #define DEBUG // error path messages, extra info
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// #define VERBOSE // more; success messages
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#include <linux/config.h>
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#ifdef CONFIG_USB_DEBUG
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# define DEBUG
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#endif
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#include <linux/module.h>
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#include <linux/kmod.h>
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#include <linux/sched.h>
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#include <linux/init.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/random.h>
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#include <linux/ethtool.h>
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#include <linux/workqueue.h>
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#include <linux/mii.h>
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#include <asm/uaccess.h>
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#include <asm/unaligned.h>
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#include <linux/usb.h>
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#include <asm/io.h>
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#include <asm/scatterlist.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#define DRIVER_VERSION "03-Nov-2004"
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/*-------------------------------------------------------------------------*/
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/*
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* Nineteen USB 1.1 max size bulk transactions per frame (ms), max.
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* Several dozen bytes of IPv4 data can fit in two such transactions.
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* One maximum size Ethernet packet takes twenty four of them.
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* For high speed, each frame comfortably fits almost 36 max size
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* Ethernet packets (so queues should be bigger).
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*/
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#define RX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
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#define TX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
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// packets are always ethernet inside
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// ... except they can be bigger (limit of 64K with NetChip framing)
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#define MIN_PACKET sizeof(struct ethhdr)
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#define MAX_PACKET 32768
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// reawaken network queue this soon after stopping; else watchdog barks
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#define TX_TIMEOUT_JIFFIES (5*HZ)
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// throttle rx/tx briefly after some faults, so khubd might disconnect()
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// us (it polls at HZ/4 usually) before we report too many false errors.
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#define THROTTLE_JIFFIES (HZ/8)
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// for vendor-specific control operations
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#define CONTROL_TIMEOUT_MS 500
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// between wakeups
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#define UNLINK_TIMEOUT_MS 3
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/*-------------------------------------------------------------------------*/
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// randomly generated ethernet address
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static u8 node_id [ETH_ALEN];
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// state we keep for each device we handle
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struct usbnet {
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// housekeeping
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struct usb_device *udev;
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struct driver_info *driver_info;
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wait_queue_head_t *wait;
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// i/o info: pipes etc
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unsigned in, out;
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struct usb_host_endpoint *status;
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unsigned maxpacket;
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struct timer_list delay;
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// protocol/interface state
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struct net_device *net;
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struct net_device_stats stats;
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int msg_enable;
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unsigned long data [5];
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struct mii_if_info mii;
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// various kinds of pending driver work
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struct sk_buff_head rxq;
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struct sk_buff_head txq;
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struct sk_buff_head done;
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struct urb *interrupt;
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struct tasklet_struct bh;
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struct work_struct kevent;
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unsigned long flags;
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# define EVENT_TX_HALT 0
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# define EVENT_RX_HALT 1
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# define EVENT_RX_MEMORY 2
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# define EVENT_STS_SPLIT 3
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# define EVENT_LINK_RESET 4
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};
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// device-specific info used by the driver
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struct driver_info {
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char *description;
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int flags;
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/* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
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#define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
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#define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
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#define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
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#define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
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#define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
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#define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
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#define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
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/* init device ... can sleep, or cause probe() failure */
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int (*bind)(struct usbnet *, struct usb_interface *);
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/* cleanup device ... can sleep, but can't fail */
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void (*unbind)(struct usbnet *, struct usb_interface *);
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/* reset device ... can sleep */
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int (*reset)(struct usbnet *);
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/* see if peer is connected ... can sleep */
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int (*check_connect)(struct usbnet *);
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/* for status polling */
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void (*status)(struct usbnet *, struct urb *);
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/* link reset handling, called from defer_kevent */
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int (*link_reset)(struct usbnet *);
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/* fixup rx packet (strip framing) */
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int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
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/* fixup tx packet (add framing) */
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struct sk_buff *(*tx_fixup)(struct usbnet *dev,
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struct sk_buff *skb, int flags);
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// FIXME -- also an interrupt mechanism
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// useful for at least PL2301/2302 and GL620USB-A
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// and CDC use them to report 'is it connected' changes
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/* for new devices, use the descriptor-reading code instead */
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int in; /* rx endpoint */
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int out; /* tx endpoint */
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unsigned long data; /* Misc driver specific data */
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};
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// we record the state for each of our queued skbs
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enum skb_state {
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illegal = 0,
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tx_start, tx_done,
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rx_start, rx_done, rx_cleanup
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};
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struct skb_data { // skb->cb is one of these
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struct urb *urb;
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struct usbnet *dev;
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enum skb_state state;
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size_t length;
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};
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static const char driver_name [] = "usbnet";
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/* use ethtool to change the level for any given device */
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static int msg_level = -1;
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module_param (msg_level, int, 0);
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MODULE_PARM_DESC (msg_level, "Override default message level");
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#ifdef DEBUG
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#define devdbg(usbnet, fmt, arg...) \
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printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
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#else
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#define devdbg(usbnet, fmt, arg...) do {} while(0)
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#endif
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#define deverr(usbnet, fmt, arg...) \
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printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
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#define devwarn(usbnet, fmt, arg...) \
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printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
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#define devinfo(usbnet, fmt, arg...) \
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printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
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/*-------------------------------------------------------------------------*/
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static void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
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static u32 usbnet_get_link (struct net_device *);
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static u32 usbnet_get_msglevel (struct net_device *);
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static void usbnet_set_msglevel (struct net_device *, u32);
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static void defer_kevent (struct usbnet *, int);
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/* mostly for PDA style devices, which are always connected if present */
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static int always_connected (struct usbnet *dev)
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{
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return 0;
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}
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/* handles CDC Ethernet and many other network "bulk data" interfaces */
|
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static int
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get_endpoints (struct usbnet *dev, struct usb_interface *intf)
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{
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int tmp;
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struct usb_host_interface *alt = NULL;
|
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struct usb_host_endpoint *in = NULL, *out = NULL;
|
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struct usb_host_endpoint *status = NULL;
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for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
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unsigned ep;
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in = out = status = NULL;
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alt = intf->altsetting + tmp;
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/* take the first altsetting with in-bulk + out-bulk;
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* remember any status endpoint, just in case;
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* ignore other endpoints and altsetttings.
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*/
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for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
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struct usb_host_endpoint *e;
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int intr = 0;
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e = alt->endpoint + ep;
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switch (e->desc.bmAttributes) {
|
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case USB_ENDPOINT_XFER_INT:
|
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if (!(e->desc.bEndpointAddress & USB_DIR_IN))
|
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continue;
|
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intr = 1;
|
||
/* FALLTHROUGH */
|
||
case USB_ENDPOINT_XFER_BULK:
|
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break;
|
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default:
|
||
continue;
|
||
}
|
||
if (e->desc.bEndpointAddress & USB_DIR_IN) {
|
||
if (!intr && !in)
|
||
in = e;
|
||
else if (intr && !status)
|
||
status = e;
|
||
} else {
|
||
if (!out)
|
||
out = e;
|
||
}
|
||
}
|
||
if (in && out)
|
||
break;
|
||
}
|
||
if (!alt || !in || !out)
|
||
return -EINVAL;
|
||
|
||
if (alt->desc.bAlternateSetting != 0
|
||
|| !(dev->driver_info->flags & FLAG_NO_SETINT)) {
|
||
tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber,
|
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alt->desc.bAlternateSetting);
|
||
if (tmp < 0)
|
||
return tmp;
|
||
}
|
||
|
||
dev->in = usb_rcvbulkpipe (dev->udev,
|
||
in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
|
||
dev->out = usb_sndbulkpipe (dev->udev,
|
||
out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
|
||
dev->status = status;
|
||
return 0;
|
||
}
|
||
|
||
static void intr_complete (struct urb *urb, struct pt_regs *regs);
|
||
|
||
static int init_status (struct usbnet *dev, struct usb_interface *intf)
|
||
{
|
||
char *buf = NULL;
|
||
unsigned pipe = 0;
|
||
unsigned maxp;
|
||
unsigned period;
|
||
|
||
if (!dev->driver_info->status)
|
||
return 0;
|
||
|
||
pipe = usb_rcvintpipe (dev->udev,
|
||
dev->status->desc.bEndpointAddress
|
||
& USB_ENDPOINT_NUMBER_MASK);
|
||
maxp = usb_maxpacket (dev->udev, pipe, 0);
|
||
|
||
/* avoid 1 msec chatter: min 8 msec poll rate */
|
||
period = max ((int) dev->status->desc.bInterval,
|
||
(dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3);
|
||
|
||
buf = kmalloc (maxp, SLAB_KERNEL);
|
||
if (buf) {
|
||
dev->interrupt = usb_alloc_urb (0, SLAB_KERNEL);
|
||
if (!dev->interrupt) {
|
||
kfree (buf);
|
||
return -ENOMEM;
|
||
} else {
|
||
usb_fill_int_urb(dev->interrupt, dev->udev, pipe,
|
||
buf, maxp, intr_complete, dev, period);
|
||
dev_dbg(&intf->dev,
|
||
"status ep%din, %d bytes period %d\n",
|
||
usb_pipeendpoint(pipe), maxp, period);
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static void skb_return (struct usbnet *dev, struct sk_buff *skb)
|
||
{
|
||
int status;
|
||
|
||
skb->dev = dev->net;
|
||
skb->protocol = eth_type_trans (skb, dev->net);
|
||
dev->stats.rx_packets++;
|
||
dev->stats.rx_bytes += skb->len;
|
||
|
||
if (netif_msg_rx_status (dev))
|
||
devdbg (dev, "< rx, len %zu, type 0x%x",
|
||
skb->len + sizeof (struct ethhdr), skb->protocol);
|
||
memset (skb->cb, 0, sizeof (struct skb_data));
|
||
status = netif_rx (skb);
|
||
if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev))
|
||
devdbg (dev, "netif_rx status %d", status);
|
||
}
|
||
|
||
|
||
#ifdef CONFIG_USB_ALI_M5632
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* ALi M5632 driver ... does high speed
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
static const struct driver_info ali_m5632_info = {
|
||
.description = "ALi M5632",
|
||
};
|
||
|
||
|
||
#endif
|
||
|
||
|
||
#ifdef CONFIG_USB_AN2720
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* AnchorChips 2720 driver ... http://www.cypress.com
|
||
*
|
||
* This doesn't seem to have a way to detect whether the peer is
|
||
* connected, or need any reset handshaking. It's got pretty big
|
||
* internal buffers (handles most of a frame's worth of data).
|
||
* Chip data sheets don't describe any vendor control messages.
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
static const struct driver_info an2720_info = {
|
||
.description = "AnchorChips/Cypress 2720",
|
||
// no reset available!
|
||
// no check_connect available!
|
||
|
||
.in = 2, .out = 2, // direction distinguishes these
|
||
};
|
||
|
||
#endif /* CONFIG_USB_AN2720 */
|
||
|
||
|
||
#ifdef CONFIG_USB_AX8817X
|
||
/* ASIX AX8817X based USB 2.0 Ethernet Devices */
|
||
|
||
#define HAVE_HARDWARE
|
||
#define NEED_MII
|
||
|
||
#include <linux/crc32.h>
|
||
|
||
#define AX_CMD_SET_SW_MII 0x06
|
||
#define AX_CMD_READ_MII_REG 0x07
|
||
#define AX_CMD_WRITE_MII_REG 0x08
|
||
#define AX_CMD_SET_HW_MII 0x0a
|
||
#define AX_CMD_READ_EEPROM 0x0b
|
||
#define AX_CMD_WRITE_EEPROM 0x0c
|
||
#define AX_CMD_WRITE_ENABLE 0x0d
|
||
#define AX_CMD_WRITE_DISABLE 0x0e
|
||
#define AX_CMD_WRITE_RX_CTL 0x10
|
||
#define AX_CMD_READ_IPG012 0x11
|
||
#define AX_CMD_WRITE_IPG0 0x12
|
||
#define AX_CMD_WRITE_IPG1 0x13
|
||
#define AX_CMD_WRITE_IPG2 0x14
|
||
#define AX_CMD_WRITE_MULTI_FILTER 0x16
|
||
#define AX_CMD_READ_NODE_ID 0x17
|
||
#define AX_CMD_READ_PHY_ID 0x19
|
||
#define AX_CMD_READ_MEDIUM_STATUS 0x1a
|
||
#define AX_CMD_WRITE_MEDIUM_MODE 0x1b
|
||
#define AX_CMD_READ_MONITOR_MODE 0x1c
|
||
#define AX_CMD_WRITE_MONITOR_MODE 0x1d
|
||
#define AX_CMD_WRITE_GPIOS 0x1f
|
||
#define AX_CMD_SW_RESET 0x20
|
||
#define AX_CMD_SW_PHY_STATUS 0x21
|
||
#define AX_CMD_SW_PHY_SELECT 0x22
|
||
#define AX88772_CMD_READ_NODE_ID 0x13
|
||
|
||
#define AX_MONITOR_MODE 0x01
|
||
#define AX_MONITOR_LINK 0x02
|
||
#define AX_MONITOR_MAGIC 0x04
|
||
#define AX_MONITOR_HSFS 0x10
|
||
|
||
/* AX88172 Medium Status Register values */
|
||
#define AX_MEDIUM_FULL_DUPLEX 0x02
|
||
#define AX_MEDIUM_TX_ABORT_ALLOW 0x04
|
||
#define AX_MEDIUM_FLOW_CONTROL_EN 0x10
|
||
|
||
#define AX_MCAST_FILTER_SIZE 8
|
||
#define AX_MAX_MCAST 64
|
||
|
||
#define AX_EEPROM_LEN 0x40
|
||
|
||
#define AX_SWRESET_CLEAR 0x00
|
||
#define AX_SWRESET_RR 0x01
|
||
#define AX_SWRESET_RT 0x02
|
||
#define AX_SWRESET_PRTE 0x04
|
||
#define AX_SWRESET_PRL 0x08
|
||
#define AX_SWRESET_BZ 0x10
|
||
#define AX_SWRESET_IPRL 0x20
|
||
#define AX_SWRESET_IPPD 0x40
|
||
|
||
#define AX88772_IPG0_DEFAULT 0x15
|
||
#define AX88772_IPG1_DEFAULT 0x0c
|
||
#define AX88772_IPG2_DEFAULT 0x12
|
||
|
||
#define AX88772_MEDIUM_FULL_DUPLEX 0x0002
|
||
#define AX88772_MEDIUM_RESERVED 0x0004
|
||
#define AX88772_MEDIUM_RX_FC_ENABLE 0x0010
|
||
#define AX88772_MEDIUM_TX_FC_ENABLE 0x0020
|
||
#define AX88772_MEDIUM_PAUSE_FORMAT 0x0080
|
||
#define AX88772_MEDIUM_RX_ENABLE 0x0100
|
||
#define AX88772_MEDIUM_100MB 0x0200
|
||
#define AX88772_MEDIUM_DEFAULT \
|
||
(AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \
|
||
AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \
|
||
AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE )
|
||
|
||
#define AX_EEPROM_MAGIC 0xdeadbeef
|
||
|
||
/* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
|
||
struct ax8817x_data {
|
||
u8 multi_filter[AX_MCAST_FILTER_SIZE];
|
||
};
|
||
|
||
struct ax88172_int_data {
|
||
u16 res1;
|
||
u8 link;
|
||
u16 res2;
|
||
u8 status;
|
||
u16 res3;
|
||
} __attribute__ ((packed));
|
||
|
||
static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
|
||
u16 size, void *data)
|
||
{
|
||
return usb_control_msg(
|
||
dev->udev,
|
||
usb_rcvctrlpipe(dev->udev, 0),
|
||
cmd,
|
||
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
||
value,
|
||
index,
|
||
data,
|
||
size,
|
||
CONTROL_TIMEOUT_MS);
|
||
}
|
||
|
||
static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
|
||
u16 size, void *data)
|
||
{
|
||
return usb_control_msg(
|
||
dev->udev,
|
||
usb_sndctrlpipe(dev->udev, 0),
|
||
cmd,
|
||
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
||
value,
|
||
index,
|
||
data,
|
||
size,
|
||
CONTROL_TIMEOUT_MS);
|
||
}
|
||
|
||
static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
|
||
{
|
||
struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
|
||
|
||
if (urb->status < 0)
|
||
printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
|
||
urb->status);
|
||
|
||
kfree(req);
|
||
usb_free_urb(urb);
|
||
}
|
||
|
||
static void ax8817x_status(struct usbnet *dev, struct urb *urb)
|
||
{
|
||
struct ax88172_int_data *event;
|
||
int link;
|
||
|
||
if (urb->actual_length < 8)
|
||
return;
|
||
|
||
event = urb->transfer_buffer;
|
||
link = event->link & 0x01;
|
||
if (netif_carrier_ok(dev->net) != link) {
|
||
if (link) {
|
||
netif_carrier_on(dev->net);
|
||
defer_kevent (dev, EVENT_LINK_RESET );
|
||
} else
|
||
netif_carrier_off(dev->net);
|
||
devdbg(dev, "ax8817x - Link Status is: %d", link);
|
||
}
|
||
}
|
||
|
||
static void ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
|
||
u16 size, void *data)
|
||
{
|
||
struct usb_ctrlrequest *req;
|
||
int status;
|
||
struct urb *urb;
|
||
|
||
if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
|
||
devdbg(dev, "Error allocating URB in write_cmd_async!");
|
||
return;
|
||
}
|
||
|
||
if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
|
||
deverr(dev, "Failed to allocate memory for control request");
|
||
usb_free_urb(urb);
|
||
return;
|
||
}
|
||
|
||
req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
|
||
req->bRequest = cmd;
|
||
req->wValue = cpu_to_le16(value);
|
||
req->wIndex = cpu_to_le16(index);
|
||
req->wLength = cpu_to_le16(size);
|
||
|
||
usb_fill_control_urb(urb, dev->udev,
|
||
usb_sndctrlpipe(dev->udev, 0),
|
||
(void *)req, data, size,
|
||
ax8817x_async_cmd_callback, req);
|
||
|
||
if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
|
||
deverr(dev, "Error submitting the control message: status=%d", status);
|
||
kfree(req);
|
||
usb_free_urb(urb);
|
||
}
|
||
}
|
||
|
||
static void ax8817x_set_multicast(struct net_device *net)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
|
||
u8 rx_ctl = 0x8c;
|
||
|
||
if (net->flags & IFF_PROMISC) {
|
||
rx_ctl |= 0x01;
|
||
} else if (net->flags & IFF_ALLMULTI
|
||
|| net->mc_count > AX_MAX_MCAST) {
|
||
rx_ctl |= 0x02;
|
||
} else if (net->mc_count == 0) {
|
||
/* just broadcast and directed */
|
||
} else {
|
||
/* We use the 20 byte dev->data
|
||
* for our 8 byte filter buffer
|
||
* to avoid allocating memory that
|
||
* is tricky to free later */
|
||
struct dev_mc_list *mc_list = net->mc_list;
|
||
u32 crc_bits;
|
||
int i;
|
||
|
||
memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
|
||
|
||
/* Build the multicast hash filter. */
|
||
for (i = 0; i < net->mc_count; i++) {
|
||
crc_bits =
|
||
ether_crc(ETH_ALEN,
|
||
mc_list->dmi_addr) >> 26;
|
||
data->multi_filter[crc_bits >> 3] |=
|
||
1 << (crc_bits & 7);
|
||
mc_list = mc_list->next;
|
||
}
|
||
|
||
ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
|
||
AX_MCAST_FILTER_SIZE, data->multi_filter);
|
||
|
||
rx_ctl |= 0x10;
|
||
}
|
||
|
||
ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
|
||
}
|
||
|
||
static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
|
||
{
|
||
struct usbnet *dev = netdev_priv(netdev);
|
||
u16 res;
|
||
u8 buf[1];
|
||
|
||
ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
|
||
ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
|
||
ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
|
||
|
||
return res & 0xffff;
|
||
}
|
||
|
||
static void ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
|
||
{
|
||
struct usbnet *dev = netdev_priv(netdev);
|
||
u16 res = val;
|
||
u8 buf[1];
|
||
|
||
ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
|
||
ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
|
||
ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
|
||
}
|
||
|
||
static int ax88172_link_reset(struct usbnet *dev)
|
||
{
|
||
u16 lpa;
|
||
u8 mode;
|
||
|
||
mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN;
|
||
lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA);
|
||
if (lpa & LPA_DUPLEX)
|
||
mode |= AX_MEDIUM_FULL_DUPLEX;
|
||
ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
u8 opt;
|
||
|
||
if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
|
||
wolinfo->supported = 0;
|
||
wolinfo->wolopts = 0;
|
||
return;
|
||
}
|
||
wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
|
||
wolinfo->wolopts = 0;
|
||
if (opt & AX_MONITOR_MODE) {
|
||
if (opt & AX_MONITOR_LINK)
|
||
wolinfo->wolopts |= WAKE_PHY;
|
||
if (opt & AX_MONITOR_MAGIC)
|
||
wolinfo->wolopts |= WAKE_MAGIC;
|
||
}
|
||
}
|
||
|
||
static int ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
u8 opt = 0;
|
||
u8 buf[1];
|
||
|
||
if (wolinfo->wolopts & WAKE_PHY)
|
||
opt |= AX_MONITOR_LINK;
|
||
if (wolinfo->wolopts & WAKE_MAGIC)
|
||
opt |= AX_MONITOR_MAGIC;
|
||
if (opt != 0)
|
||
opt |= AX_MONITOR_MODE;
|
||
|
||
if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
|
||
opt, 0, 0, &buf) < 0)
|
||
return -EINVAL;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int ax8817x_get_eeprom_len(struct net_device *net)
|
||
{
|
||
return AX_EEPROM_LEN;
|
||
}
|
||
|
||
static int ax8817x_get_eeprom(struct net_device *net,
|
||
struct ethtool_eeprom *eeprom, u8 *data)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
u16 *ebuf = (u16 *)data;
|
||
int i;
|
||
|
||
/* Crude hack to ensure that we don't overwrite memory
|
||
* if an odd length is supplied
|
||
*/
|
||
if (eeprom->len % 2)
|
||
return -EINVAL;
|
||
|
||
eeprom->magic = AX_EEPROM_MAGIC;
|
||
|
||
/* ax8817x returns 2 bytes from eeprom on read */
|
||
for (i=0; i < eeprom->len / 2; i++) {
|
||
if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
|
||
eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
|
||
return -EINVAL;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static void ax8817x_get_drvinfo (struct net_device *net,
|
||
struct ethtool_drvinfo *info)
|
||
{
|
||
/* Inherit standard device info */
|
||
usbnet_get_drvinfo(net, info);
|
||
info->eedump_len = 0x3e;
|
||
}
|
||
|
||
static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
return mii_ethtool_gset(&dev->mii,cmd);
|
||
}
|
||
|
||
static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
return mii_ethtool_sset(&dev->mii,cmd);
|
||
}
|
||
|
||
/* We need to override some ethtool_ops so we require our
|
||
own structure so we don't interfere with other usbnet
|
||
devices that may be connected at the same time. */
|
||
static struct ethtool_ops ax8817x_ethtool_ops = {
|
||
.get_drvinfo = ax8817x_get_drvinfo,
|
||
.get_link = ethtool_op_get_link,
|
||
.get_msglevel = usbnet_get_msglevel,
|
||
.set_msglevel = usbnet_set_msglevel,
|
||
.get_wol = ax8817x_get_wol,
|
||
.set_wol = ax8817x_set_wol,
|
||
.get_eeprom_len = ax8817x_get_eeprom_len,
|
||
.get_eeprom = ax8817x_get_eeprom,
|
||
.get_settings = ax8817x_get_settings,
|
||
.set_settings = ax8817x_set_settings,
|
||
};
|
||
|
||
static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
|
||
{
|
||
int ret = 0;
|
||
void *buf;
|
||
int i;
|
||
unsigned long gpio_bits = dev->driver_info->data;
|
||
|
||
get_endpoints(dev,intf);
|
||
|
||
buf = kmalloc(ETH_ALEN, GFP_KERNEL);
|
||
if(!buf) {
|
||
ret = -ENOMEM;
|
||
goto out1;
|
||
}
|
||
|
||
/* Toggle the GPIOs in a manufacturer/model specific way */
|
||
for (i = 2; i >= 0; i--) {
|
||
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
|
||
(gpio_bits >> (i * 8)) & 0xff, 0, 0,
|
||
buf)) < 0)
|
||
goto out2;
|
||
msleep(5);
|
||
}
|
||
|
||
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0, buf)) < 0) {
|
||
dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
/* Get the MAC address */
|
||
memset(buf, 0, ETH_ALEN);
|
||
if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) < 0) {
|
||
dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
|
||
goto out2;
|
||
}
|
||
memcpy(dev->net->dev_addr, buf, ETH_ALEN);
|
||
|
||
/* Get the PHY id */
|
||
if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
|
||
dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
|
||
goto out2;
|
||
} else if (ret < 2) {
|
||
/* this should always return 2 bytes */
|
||
dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret);
|
||
ret = -EIO;
|
||
goto out2;
|
||
}
|
||
|
||
/* Initialize MII structure */
|
||
dev->mii.dev = dev->net;
|
||
dev->mii.mdio_read = ax8817x_mdio_read;
|
||
dev->mii.mdio_write = ax8817x_mdio_write;
|
||
dev->mii.phy_id_mask = 0x3f;
|
||
dev->mii.reg_num_mask = 0x1f;
|
||
dev->mii.phy_id = *((u8 *)buf + 1);
|
||
|
||
dev->net->set_multicast_list = ax8817x_set_multicast;
|
||
dev->net->ethtool_ops = &ax8817x_ethtool_ops;
|
||
|
||
ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
|
||
ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
|
||
ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
|
||
mii_nway_restart(&dev->mii);
|
||
|
||
return 0;
|
||
out2:
|
||
kfree(buf);
|
||
out1:
|
||
return ret;
|
||
}
|
||
|
||
static struct ethtool_ops ax88772_ethtool_ops = {
|
||
.get_drvinfo = ax8817x_get_drvinfo,
|
||
.get_link = ethtool_op_get_link,
|
||
.get_msglevel = usbnet_get_msglevel,
|
||
.set_msglevel = usbnet_set_msglevel,
|
||
.get_wol = ax8817x_get_wol,
|
||
.set_wol = ax8817x_set_wol,
|
||
.get_eeprom_len = ax8817x_get_eeprom_len,
|
||
.get_eeprom = ax8817x_get_eeprom,
|
||
.get_settings = ax8817x_get_settings,
|
||
.set_settings = ax8817x_set_settings,
|
||
};
|
||
|
||
static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
|
||
{
|
||
int ret;
|
||
void *buf;
|
||
|
||
get_endpoints(dev,intf);
|
||
|
||
buf = kmalloc(6, GFP_KERNEL);
|
||
if(!buf) {
|
||
dbg ("Cannot allocate memory for buffer");
|
||
ret = -ENOMEM;
|
||
goto out1;
|
||
}
|
||
|
||
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
|
||
0x00B0, 0, 0, buf)) < 0)
|
||
goto out2;
|
||
|
||
msleep(5);
|
||
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0, buf)) < 0) {
|
||
dbg("Select PHY #1 failed: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
if ((ret =
|
||
ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0, buf)) < 0) {
|
||
dbg("Failed to power down internal PHY: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
msleep(150);
|
||
if ((ret =
|
||
ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0, buf)) < 0) {
|
||
dbg("Failed to perform software reset: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
msleep(150);
|
||
if ((ret =
|
||
ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
|
||
dbg("Failed to set Internal/External PHY reset control: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
msleep(150);
|
||
if ((ret =
|
||
ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0,
|
||
buf)) < 0) {
|
||
dbg("Failed to reset RX_CTL: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
/* Get the MAC address */
|
||
memset(buf, 0, ETH_ALEN);
|
||
if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf)) < 0) {
|
||
dbg("Failed to read MAC address: %d", ret);
|
||
goto out2;
|
||
}
|
||
memcpy(dev->net->dev_addr, buf, ETH_ALEN);
|
||
|
||
if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) < 0) {
|
||
dbg("Enabling software MII failed: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
if (((ret =
|
||
ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) < 0)
|
||
|| (*((u16 *)buf) != 0x003b)) {
|
||
dbg("Read PHY register 2 must be 0x3b00: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
/* Initialize MII structure */
|
||
dev->mii.dev = dev->net;
|
||
dev->mii.mdio_read = ax8817x_mdio_read;
|
||
dev->mii.mdio_write = ax8817x_mdio_write;
|
||
dev->mii.phy_id_mask = 0xff;
|
||
dev->mii.reg_num_mask = 0xff;
|
||
|
||
/* Get the PHY id */
|
||
if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
|
||
dbg("Error reading PHY ID: %02x", ret);
|
||
goto out2;
|
||
} else if (ret < 2) {
|
||
/* this should always return 2 bytes */
|
||
dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
|
||
ret);
|
||
ret = -EIO;
|
||
goto out2;
|
||
}
|
||
dev->mii.phy_id = *((u8 *)buf + 1);
|
||
|
||
if ((ret =
|
||
ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0, buf)) < 0) {
|
||
dbg("Set external PHY reset pin level: %d", ret);
|
||
goto out2;
|
||
}
|
||
msleep(150);
|
||
if ((ret =
|
||
ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
|
||
dbg("Set Internal/External PHY reset control: %d", ret);
|
||
goto out2;
|
||
}
|
||
msleep(150);
|
||
|
||
|
||
dev->net->set_multicast_list = ax8817x_set_multicast;
|
||
dev->net->ethtool_ops = &ax88772_ethtool_ops;
|
||
|
||
ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
|
||
ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
|
||
ADVERTISE_ALL | ADVERTISE_CSMA);
|
||
mii_nway_restart(&dev->mii);
|
||
|
||
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) {
|
||
dbg("Write medium mode register: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
|
||
dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
|
||
goto out2;
|
||
}
|
||
if ((ret =
|
||
ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
|
||
dbg("Failed to set hardware MII: %02x", ret);
|
||
goto out2;
|
||
}
|
||
|
||
/* Set RX_CTL to default values with 2k buffer, and enable cactus */
|
||
if ((ret =
|
||
ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
|
||
buf)) < 0) {
|
||
dbg("Reset RX_CTL failed: %d", ret);
|
||
goto out2;
|
||
}
|
||
|
||
kfree(buf);
|
||
|
||
return 0;
|
||
|
||
out2:
|
||
kfree(buf);
|
||
out1:
|
||
return ret;
|
||
}
|
||
|
||
static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
|
||
{
|
||
u32 *header;
|
||
char *packet;
|
||
struct sk_buff *ax_skb;
|
||
u16 size;
|
||
|
||
header = (u32 *) skb->data;
|
||
le32_to_cpus(header);
|
||
packet = (char *)(header + 1);
|
||
|
||
skb_pull(skb, 4);
|
||
|
||
while (skb->len > 0) {
|
||
if ((short)(*header & 0x0000ffff) !=
|
||
~((short)((*header & 0xffff0000) >> 16))) {
|
||
devdbg(dev,"header length data is error");
|
||
}
|
||
/* get the packet length */
|
||
size = (u16) (*header & 0x0000ffff);
|
||
|
||
if ((skb->len) - ((size + 1) & 0xfffe) == 0)
|
||
return 2;
|
||
if (size > ETH_FRAME_LEN) {
|
||
devdbg(dev,"invalid rx length %d", size);
|
||
return 0;
|
||
}
|
||
ax_skb = skb_clone(skb, GFP_ATOMIC);
|
||
if (ax_skb) {
|
||
ax_skb->len = size;
|
||
ax_skb->data = packet;
|
||
ax_skb->tail = packet + size;
|
||
skb_return(dev, ax_skb);
|
||
} else {
|
||
return 0;
|
||
}
|
||
|
||
skb_pull(skb, (size + 1) & 0xfffe);
|
||
|
||
if (skb->len == 0)
|
||
break;
|
||
|
||
header = (u32 *) skb->data;
|
||
le32_to_cpus(header);
|
||
packet = (char *)(header + 1);
|
||
skb_pull(skb, 4);
|
||
}
|
||
|
||
if (skb->len < 0) {
|
||
devdbg(dev,"invalid rx length %d", skb->len);
|
||
return 0;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
|
||
int flags)
|
||
{
|
||
int padlen;
|
||
int headroom = skb_headroom(skb);
|
||
int tailroom = skb_tailroom(skb);
|
||
u32 *packet_len;
|
||
u32 *padbytes_ptr;
|
||
|
||
padlen = ((skb->len + 4) % 512) ? 0 : 4;
|
||
|
||
if ((!skb_cloned(skb))
|
||
&& ((headroom + tailroom) >= (4 + padlen))) {
|
||
if ((headroom < 4) || (tailroom < padlen)) {
|
||
skb->data = memmove(skb->head + 4, skb->data, skb->len);
|
||
skb->tail = skb->data + skb->len;
|
||
}
|
||
} else {
|
||
struct sk_buff *skb2;
|
||
skb2 = skb_copy_expand(skb, 4, padlen, flags);
|
||
dev_kfree_skb_any(skb);
|
||
skb = skb2;
|
||
if (!skb)
|
||
return NULL;
|
||
}
|
||
|
||
packet_len = (u32 *) skb_push(skb, 4);
|
||
|
||
packet_len = (u32 *) skb->data;
|
||
*packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
|
||
|
||
if ((skb->len % 512) == 0) {
|
||
padbytes_ptr = (u32 *) skb->tail;
|
||
*padbytes_ptr = 0xffff0000;
|
||
skb_put(skb, padlen);
|
||
}
|
||
return skb;
|
||
}
|
||
|
||
static int ax88772_link_reset(struct usbnet *dev)
|
||
{
|
||
u16 lpa;
|
||
u16 mode;
|
||
|
||
mode = AX88772_MEDIUM_DEFAULT;
|
||
lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA);
|
||
|
||
if ((lpa & LPA_DUPLEX) == 0)
|
||
mode &= ~AX88772_MEDIUM_FULL_DUPLEX;
|
||
if ((lpa & LPA_100) == 0)
|
||
mode &= ~AX88772_MEDIUM_100MB;
|
||
ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static const struct driver_info ax8817x_info = {
|
||
.description = "ASIX AX8817x USB 2.0 Ethernet",
|
||
.bind = ax8817x_bind,
|
||
.status = ax8817x_status,
|
||
.link_reset = ax88172_link_reset,
|
||
.reset = ax88172_link_reset,
|
||
.flags = FLAG_ETHER,
|
||
.data = 0x00130103,
|
||
};
|
||
|
||
static const struct driver_info dlink_dub_e100_info = {
|
||
.description = "DLink DUB-E100 USB Ethernet",
|
||
.bind = ax8817x_bind,
|
||
.status = ax8817x_status,
|
||
.link_reset = ax88172_link_reset,
|
||
.reset = ax88172_link_reset,
|
||
.flags = FLAG_ETHER,
|
||
.data = 0x009f9d9f,
|
||
};
|
||
|
||
static const struct driver_info netgear_fa120_info = {
|
||
.description = "Netgear FA-120 USB Ethernet",
|
||
.bind = ax8817x_bind,
|
||
.status = ax8817x_status,
|
||
.link_reset = ax88172_link_reset,
|
||
.reset = ax88172_link_reset,
|
||
.flags = FLAG_ETHER,
|
||
.data = 0x00130103,
|
||
};
|
||
|
||
static const struct driver_info hawking_uf200_info = {
|
||
.description = "Hawking UF200 USB Ethernet",
|
||
.bind = ax8817x_bind,
|
||
.status = ax8817x_status,
|
||
.link_reset = ax88172_link_reset,
|
||
.reset = ax88172_link_reset,
|
||
.flags = FLAG_ETHER,
|
||
.data = 0x001f1d1f,
|
||
};
|
||
|
||
static const struct driver_info ax88772_info = {
|
||
.description = "ASIX AX88772 USB 2.0 Ethernet",
|
||
.bind = ax88772_bind,
|
||
.status = ax8817x_status,
|
||
.link_reset = ax88772_link_reset,
|
||
.reset = ax88772_link_reset,
|
||
.flags = FLAG_ETHER | FLAG_FRAMING_AX,
|
||
.rx_fixup = ax88772_rx_fixup,
|
||
.tx_fixup = ax88772_tx_fixup,
|
||
.data = 0x00130103,
|
||
};
|
||
|
||
#endif /* CONFIG_USB_AX8817X */
|
||
|
||
|
||
|
||
#ifdef CONFIG_USB_BELKIN
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* Belkin F5U104 ... two NetChip 2280 devices + Atmel microcontroller
|
||
*
|
||
* ... also two eTEK designs, including one sold as "Advance USBNET"
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
static const struct driver_info belkin_info = {
|
||
.description = "Belkin, eTEK, or compatible",
|
||
};
|
||
|
||
#endif /* CONFIG_USB_BELKIN */
|
||
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* Communications Device Class declarations.
|
||
* Used by CDC Ethernet, and some CDC variants
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
#ifdef CONFIG_USB_CDCETHER
|
||
#define NEED_GENERIC_CDC
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_ZAURUS
|
||
/* Ethernet variant uses funky framing, broken ethernet addressing */
|
||
#define NEED_GENERIC_CDC
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_RNDIS
|
||
/* ACM variant uses even funkier framing, complex control RPC scheme */
|
||
#define NEED_GENERIC_CDC
|
||
#endif
|
||
|
||
|
||
#ifdef NEED_GENERIC_CDC
|
||
|
||
#include <linux/usb_cdc.h>
|
||
|
||
struct cdc_state {
|
||
struct usb_cdc_header_desc *header;
|
||
struct usb_cdc_union_desc *u;
|
||
struct usb_cdc_ether_desc *ether;
|
||
struct usb_interface *control;
|
||
struct usb_interface *data;
|
||
};
|
||
|
||
static struct usb_driver usbnet_driver;
|
||
|
||
/*
|
||
* probes control interface, claims data interface, collects the bulk
|
||
* endpoints, activates data interface (if needed), maybe sets MTU.
|
||
* all pure cdc, except for certain firmware workarounds.
|
||
*/
|
||
static int generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf)
|
||
{
|
||
u8 *buf = intf->cur_altsetting->extra;
|
||
int len = intf->cur_altsetting->extralen;
|
||
struct usb_interface_descriptor *d;
|
||
struct cdc_state *info = (void *) &dev->data;
|
||
int status;
|
||
int rndis;
|
||
|
||
if (sizeof dev->data < sizeof *info)
|
||
return -EDOM;
|
||
|
||
/* expect strict spec conformance for the descriptors, but
|
||
* cope with firmware which stores them in the wrong place
|
||
*/
|
||
if (len == 0 && dev->udev->actconfig->extralen) {
|
||
/* Motorola SB4100 (and others: Brad Hards says it's
|
||
* from a Broadcom design) put CDC descriptors here
|
||
*/
|
||
buf = dev->udev->actconfig->extra;
|
||
len = dev->udev->actconfig->extralen;
|
||
if (len)
|
||
dev_dbg (&intf->dev,
|
||
"CDC descriptors on config\n");
|
||
}
|
||
|
||
/* this assumes that if there's a non-RNDIS vendor variant
|
||
* of cdc-acm, it'll fail RNDIS requests cleanly.
|
||
*/
|
||
rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff);
|
||
|
||
memset (info, 0, sizeof *info);
|
||
info->control = intf;
|
||
while (len > 3) {
|
||
if (buf [1] != USB_DT_CS_INTERFACE)
|
||
goto next_desc;
|
||
|
||
/* use bDescriptorSubType to identify the CDC descriptors.
|
||
* We expect devices with CDC header and union descriptors.
|
||
* For CDC Ethernet we need the ethernet descriptor.
|
||
* For RNDIS, ignore two (pointless) CDC modem descriptors
|
||
* in favor of a complicated OID-based RPC scheme doing what
|
||
* CDC Ethernet achieves with a simple descriptor.
|
||
*/
|
||
switch (buf [2]) {
|
||
case USB_CDC_HEADER_TYPE:
|
||
if (info->header) {
|
||
dev_dbg (&intf->dev, "extra CDC header\n");
|
||
goto bad_desc;
|
||
}
|
||
info->header = (void *) buf;
|
||
if (info->header->bLength != sizeof *info->header) {
|
||
dev_dbg (&intf->dev, "CDC header len %u\n",
|
||
info->header->bLength);
|
||
goto bad_desc;
|
||
}
|
||
break;
|
||
case USB_CDC_UNION_TYPE:
|
||
if (info->u) {
|
||
dev_dbg (&intf->dev, "extra CDC union\n");
|
||
goto bad_desc;
|
||
}
|
||
info->u = (void *) buf;
|
||
if (info->u->bLength != sizeof *info->u) {
|
||
dev_dbg (&intf->dev, "CDC union len %u\n",
|
||
info->u->bLength);
|
||
goto bad_desc;
|
||
}
|
||
|
||
/* we need a master/control interface (what we're
|
||
* probed with) and a slave/data interface; union
|
||
* descriptors sort this all out.
|
||
*/
|
||
info->control = usb_ifnum_to_if(dev->udev,
|
||
info->u->bMasterInterface0);
|
||
info->data = usb_ifnum_to_if(dev->udev,
|
||
info->u->bSlaveInterface0);
|
||
if (!info->control || !info->data) {
|
||
dev_dbg (&intf->dev,
|
||
"master #%u/%p slave #%u/%p\n",
|
||
info->u->bMasterInterface0,
|
||
info->control,
|
||
info->u->bSlaveInterface0,
|
||
info->data);
|
||
goto bad_desc;
|
||
}
|
||
if (info->control != intf) {
|
||
dev_dbg (&intf->dev, "bogus CDC Union\n");
|
||
/* Ambit USB Cable Modem (and maybe others)
|
||
* interchanges master and slave interface.
|
||
*/
|
||
if (info->data == intf) {
|
||
info->data = info->control;
|
||
info->control = intf;
|
||
} else
|
||
goto bad_desc;
|
||
}
|
||
|
||
/* a data interface altsetting does the real i/o */
|
||
d = &info->data->cur_altsetting->desc;
|
||
if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
|
||
dev_dbg (&intf->dev, "slave class %u\n",
|
||
d->bInterfaceClass);
|
||
goto bad_desc;
|
||
}
|
||
break;
|
||
case USB_CDC_ETHERNET_TYPE:
|
||
if (info->ether) {
|
||
dev_dbg (&intf->dev, "extra CDC ether\n");
|
||
goto bad_desc;
|
||
}
|
||
info->ether = (void *) buf;
|
||
if (info->ether->bLength != sizeof *info->ether) {
|
||
dev_dbg (&intf->dev, "CDC ether len %u\n",
|
||
info->u->bLength);
|
||
goto bad_desc;
|
||
}
|
||
dev->net->mtu = le16_to_cpup (
|
||
&info->ether->wMaxSegmentSize)
|
||
- ETH_HLEN;
|
||
/* because of Zaurus, we may be ignoring the host
|
||
* side link address we were given.
|
||
*/
|
||
break;
|
||
}
|
||
next_desc:
|
||
len -= buf [0]; /* bLength */
|
||
buf += buf [0];
|
||
}
|
||
|
||
if (!info->header || !info->u || (!rndis && !info->ether)) {
|
||
dev_dbg (&intf->dev, "missing cdc %s%s%sdescriptor\n",
|
||
info->header ? "" : "header ",
|
||
info->u ? "" : "union ",
|
||
info->ether ? "" : "ether ");
|
||
goto bad_desc;
|
||
}
|
||
|
||
/* claim data interface and set it up ... with side effects.
|
||
* network traffic can't flow until an altsetting is enabled.
|
||
*/
|
||
status = usb_driver_claim_interface (&usbnet_driver, info->data, dev);
|
||
if (status < 0)
|
||
return status;
|
||
status = get_endpoints (dev, info->data);
|
||
if (status < 0) {
|
||
/* ensure immediate exit from usbnet_disconnect */
|
||
usb_set_intfdata(info->data, NULL);
|
||
usb_driver_release_interface (&usbnet_driver, info->data);
|
||
return status;
|
||
}
|
||
|
||
/* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
|
||
dev->status = NULL;
|
||
if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
|
||
struct usb_endpoint_descriptor *desc;
|
||
|
||
dev->status = &info->control->cur_altsetting->endpoint [0];
|
||
desc = &dev->status->desc;
|
||
if (desc->bmAttributes != USB_ENDPOINT_XFER_INT
|
||
|| !(desc->bEndpointAddress & USB_DIR_IN)
|
||
|| (le16_to_cpu(desc->wMaxPacketSize)
|
||
< sizeof (struct usb_cdc_notification))
|
||
|| !desc->bInterval) {
|
||
dev_dbg (&intf->dev, "bad notification endpoint\n");
|
||
dev->status = NULL;
|
||
}
|
||
}
|
||
if (rndis && !dev->status) {
|
||
dev_dbg (&intf->dev, "missing RNDIS status endpoint\n");
|
||
usb_set_intfdata(info->data, NULL);
|
||
usb_driver_release_interface (&usbnet_driver, info->data);
|
||
return -ENODEV;
|
||
}
|
||
return 0;
|
||
|
||
bad_desc:
|
||
dev_info (&dev->udev->dev, "bad CDC descriptors\n");
|
||
return -ENODEV;
|
||
}
|
||
|
||
static void cdc_unbind (struct usbnet *dev, struct usb_interface *intf)
|
||
{
|
||
struct cdc_state *info = (void *) &dev->data;
|
||
|
||
/* disconnect master --> disconnect slave */
|
||
if (intf == info->control && info->data) {
|
||
/* ensure immediate exit from usbnet_disconnect */
|
||
usb_set_intfdata(info->data, NULL);
|
||
usb_driver_release_interface (&usbnet_driver, info->data);
|
||
info->data = NULL;
|
||
}
|
||
|
||
/* and vice versa (just in case) */
|
||
else if (intf == info->data && info->control) {
|
||
/* ensure immediate exit from usbnet_disconnect */
|
||
usb_set_intfdata(info->control, NULL);
|
||
usb_driver_release_interface (&usbnet_driver, info->control);
|
||
info->control = NULL;
|
||
}
|
||
}
|
||
|
||
#endif /* NEED_GENERIC_CDC */
|
||
|
||
|
||
#ifdef CONFIG_USB_CDCETHER
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* Communications Device Class, Ethernet Control model
|
||
*
|
||
* Takes two interfaces. The DATA interface is inactive till an altsetting
|
||
* is selected. Configuration data includes class descriptors.
|
||
*
|
||
* This should interop with whatever the 2.4 "CDCEther.c" driver
|
||
* (by Brad Hards) talked with.
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
#include <linux/ctype.h>
|
||
|
||
|
||
static void dumpspeed (struct usbnet *dev, __le32 *speeds)
|
||
{
|
||
if (netif_msg_timer (dev))
|
||
devinfo (dev, "link speeds: %u kbps up, %u kbps down",
|
||
__le32_to_cpu(speeds[0]) / 1000,
|
||
__le32_to_cpu(speeds[1]) / 1000);
|
||
}
|
||
|
||
static void cdc_status (struct usbnet *dev, struct urb *urb)
|
||
{
|
||
struct usb_cdc_notification *event;
|
||
|
||
if (urb->actual_length < sizeof *event)
|
||
return;
|
||
|
||
/* SPEED_CHANGE can get split into two 8-byte packets */
|
||
if (test_and_clear_bit (EVENT_STS_SPLIT, &dev->flags)) {
|
||
dumpspeed (dev, (__le32 *) urb->transfer_buffer);
|
||
return;
|
||
}
|
||
|
||
event = urb->transfer_buffer;
|
||
switch (event->bNotificationType) {
|
||
case USB_CDC_NOTIFY_NETWORK_CONNECTION:
|
||
if (netif_msg_timer (dev))
|
||
devdbg (dev, "CDC: carrier %s",
|
||
event->wValue ? "on" : "off");
|
||
if (event->wValue)
|
||
netif_carrier_on(dev->net);
|
||
else
|
||
netif_carrier_off(dev->net);
|
||
break;
|
||
case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */
|
||
if (netif_msg_timer (dev))
|
||
devdbg (dev, "CDC: speed change (len %d)",
|
||
urb->actual_length);
|
||
if (urb->actual_length != (sizeof *event + 8))
|
||
set_bit (EVENT_STS_SPLIT, &dev->flags);
|
||
else
|
||
dumpspeed (dev, (__le32 *) &event[1]);
|
||
break;
|
||
// case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: /* RNDIS; or unsolicited */
|
||
default:
|
||
deverr (dev, "CDC: unexpected notification %02x!",
|
||
event->bNotificationType);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static u8 nibble (unsigned char c)
|
||
{
|
||
if (likely (isdigit (c)))
|
||
return c - '0';
|
||
c = toupper (c);
|
||
if (likely (isxdigit (c)))
|
||
return 10 + c - 'A';
|
||
return 0;
|
||
}
|
||
|
||
static inline int
|
||
get_ethernet_addr (struct usbnet *dev, struct usb_cdc_ether_desc *e)
|
||
{
|
||
int tmp, i;
|
||
unsigned char buf [13];
|
||
|
||
tmp = usb_string (dev->udev, e->iMACAddress, buf, sizeof buf);
|
||
if (tmp != 12) {
|
||
dev_dbg (&dev->udev->dev,
|
||
"bad MAC string %d fetch, %d\n", e->iMACAddress, tmp);
|
||
if (tmp >= 0)
|
||
tmp = -EINVAL;
|
||
return tmp;
|
||
}
|
||
for (i = tmp = 0; i < 6; i++, tmp += 2)
|
||
dev->net->dev_addr [i] =
|
||
(nibble (buf [tmp]) << 4) + nibble (buf [tmp + 1]);
|
||
return 0;
|
||
}
|
||
|
||
static int cdc_bind (struct usbnet *dev, struct usb_interface *intf)
|
||
{
|
||
int status;
|
||
struct cdc_state *info = (void *) &dev->data;
|
||
|
||
status = generic_cdc_bind (dev, intf);
|
||
if (status < 0)
|
||
return status;
|
||
|
||
status = get_ethernet_addr (dev, info->ether);
|
||
if (status < 0) {
|
||
usb_set_intfdata(info->data, NULL);
|
||
usb_driver_release_interface (&usbnet_driver, info->data);
|
||
return status;
|
||
}
|
||
|
||
/* FIXME cdc-ether has some multicast code too, though it complains
|
||
* in routine cases. info->ether describes the multicast support.
|
||
*/
|
||
return 0;
|
||
}
|
||
|
||
static const struct driver_info cdc_info = {
|
||
.description = "CDC Ethernet Device",
|
||
.flags = FLAG_ETHER,
|
||
// .check_connect = cdc_check_connect,
|
||
.bind = cdc_bind,
|
||
.unbind = cdc_unbind,
|
||
.status = cdc_status,
|
||
};
|
||
|
||
#endif /* CONFIG_USB_CDCETHER */
|
||
|
||
|
||
|
||
#ifdef CONFIG_USB_EPSON2888
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* EPSON USB clients
|
||
*
|
||
* This is the same idea as Linux PDAs (below) except the firmware in the
|
||
* device might not be Tux-powered. Epson provides reference firmware that
|
||
* implements this interface. Product developers can reuse or modify that
|
||
* code, such as by using their own product and vendor codes.
|
||
*
|
||
* Support was from Juro Bystricky <bystricky.juro@erd.epson.com>
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
static const struct driver_info epson2888_info = {
|
||
.description = "Epson USB Device",
|
||
.check_connect = always_connected,
|
||
|
||
.in = 4, .out = 3,
|
||
};
|
||
|
||
#endif /* CONFIG_USB_EPSON2888 */
|
||
|
||
|
||
#ifdef CONFIG_USB_GENESYS
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* GeneSys GL620USB-A (www.genesyslogic.com.tw)
|
||
*
|
||
* ... should partially interop with the Win32 driver for this hardware
|
||
* The GeneSys docs imply there's some NDIS issue motivating this framing.
|
||
*
|
||
* Some info from GeneSys:
|
||
* - GL620USB-A is full duplex; GL620USB is only half duplex for bulk.
|
||
* (Some cables, like the BAFO-100c, use the half duplex version.)
|
||
* - For the full duplex model, the low bit of the version code says
|
||
* which side is which ("left/right").
|
||
* - For the half duplex type, a control/interrupt handshake settles
|
||
* the transfer direction. (That's disabled here, partially coded.)
|
||
* A control URB would block until other side writes an interrupt.
|
||
*
|
||
* Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw>
|
||
* and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>.
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
// control msg write command
|
||
#define GENELINK_CONNECT_WRITE 0xF0
|
||
// interrupt pipe index
|
||
#define GENELINK_INTERRUPT_PIPE 0x03
|
||
// interrupt read buffer size
|
||
#define INTERRUPT_BUFSIZE 0x08
|
||
// interrupt pipe interval value
|
||
#define GENELINK_INTERRUPT_INTERVAL 0x10
|
||
// max transmit packet number per transmit
|
||
#define GL_MAX_TRANSMIT_PACKETS 32
|
||
// max packet length
|
||
#define GL_MAX_PACKET_LEN 1514
|
||
// max receive buffer size
|
||
#define GL_RCV_BUF_SIZE \
|
||
(((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4)
|
||
|
||
struct gl_packet {
|
||
u32 packet_length;
|
||
char packet_data [1];
|
||
};
|
||
|
||
struct gl_header {
|
||
u32 packet_count;
|
||
struct gl_packet packets;
|
||
};
|
||
|
||
#ifdef GENELINK_ACK
|
||
|
||
// FIXME: this code is incomplete, not debugged; it doesn't
|
||
// handle interrupts correctly. interrupts should be generic
|
||
// code like all other device I/O, anyway.
|
||
|
||
struct gl_priv {
|
||
struct urb *irq_urb;
|
||
char irq_buf [INTERRUPT_BUFSIZE];
|
||
};
|
||
|
||
static inline int gl_control_write (struct usbnet *dev, u8 request, u16 value)
|
||
{
|
||
int retval;
|
||
|
||
retval = usb_control_msg (dev->udev,
|
||
usb_sndctrlpipe (dev->udev, 0),
|
||
request,
|
||
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
|
||
value,
|
||
0, // index
|
||
0, // data buffer
|
||
0, // size
|
||
CONTROL_TIMEOUT_MS);
|
||
return retval;
|
||
}
|
||
|
||
static void gl_interrupt_complete (struct urb *urb, struct pt_regs *regs)
|
||
{
|
||
int status = urb->status;
|
||
|
||
switch (status) {
|
||
case 0:
|
||
/* success */
|
||
break;
|
||
case -ECONNRESET:
|
||
case -ENOENT:
|
||
case -ESHUTDOWN:
|
||
/* this urb is terminated, clean up */
|
||
dbg("%s - urb shutting down with status: %d",
|
||
__FUNCTION__, status);
|
||
return;
|
||
default:
|
||
dbg("%s - nonzero urb status received: %d",
|
||
__FUNCTION__, urb->status);
|
||
}
|
||
|
||
status = usb_submit_urb (urb, GFP_ATOMIC);
|
||
if (status)
|
||
err ("%s - usb_submit_urb failed with result %d",
|
||
__FUNCTION__, status);
|
||
}
|
||
|
||
static int gl_interrupt_read (struct usbnet *dev)
|
||
{
|
||
struct gl_priv *priv = dev->priv_data;
|
||
int retval;
|
||
|
||
// issue usb interrupt read
|
||
if (priv && priv->irq_urb) {
|
||
// submit urb
|
||
if ((retval = usb_submit_urb (priv->irq_urb, GFP_KERNEL)) != 0)
|
||
dbg ("gl_interrupt_read: submit fail - %X...", retval);
|
||
else
|
||
dbg ("gl_interrupt_read: submit success...");
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
// check whether another side is connected
|
||
static int genelink_check_connect (struct usbnet *dev)
|
||
{
|
||
int retval;
|
||
|
||
dbg ("genelink_check_connect...");
|
||
|
||
// detect whether another side is connected
|
||
if ((retval = gl_control_write (dev, GENELINK_CONNECT_WRITE, 0)) != 0) {
|
||
dbg ("%s: genelink_check_connect write fail - %X",
|
||
dev->net->name, retval);
|
||
return retval;
|
||
}
|
||
|
||
// usb interrupt read to ack another side
|
||
if ((retval = gl_interrupt_read (dev)) != 0) {
|
||
dbg ("%s: genelink_check_connect read fail - %X",
|
||
dev->net->name, retval);
|
||
return retval;
|
||
}
|
||
|
||
dbg ("%s: genelink_check_connect read success", dev->net->name);
|
||
return 0;
|
||
}
|
||
|
||
// allocate and initialize the private data for genelink
|
||
static int genelink_init (struct usbnet *dev)
|
||
{
|
||
struct gl_priv *priv;
|
||
|
||
// allocate the private data structure
|
||
if ((priv = kmalloc (sizeof *priv, GFP_KERNEL)) == 0) {
|
||
dbg ("%s: cannot allocate private data per device",
|
||
dev->net->name);
|
||
return -ENOMEM;
|
||
}
|
||
|
||
// allocate irq urb
|
||
if ((priv->irq_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
|
||
dbg ("%s: cannot allocate private irq urb per device",
|
||
dev->net->name);
|
||
kfree (priv);
|
||
return -ENOMEM;
|
||
}
|
||
|
||
// fill irq urb
|
||
usb_fill_int_urb (priv->irq_urb, dev->udev,
|
||
usb_rcvintpipe (dev->udev, GENELINK_INTERRUPT_PIPE),
|
||
priv->irq_buf, INTERRUPT_BUFSIZE,
|
||
gl_interrupt_complete, 0,
|
||
GENELINK_INTERRUPT_INTERVAL);
|
||
|
||
// set private data pointer
|
||
dev->priv_data = priv;
|
||
|
||
return 0;
|
||
}
|
||
|
||
// release the private data
|
||
static int genelink_free (struct usbnet *dev)
|
||
{
|
||
struct gl_priv *priv = dev->priv_data;
|
||
|
||
if (!priv)
|
||
return 0;
|
||
|
||
// FIXME: can't cancel here; it's synchronous, and
|
||
// should have happened earlier in any case (interrupt
|
||
// handling needs to be generic)
|
||
|
||
// cancel irq urb first
|
||
usb_kill_urb (priv->irq_urb);
|
||
|
||
// free irq urb
|
||
usb_free_urb (priv->irq_urb);
|
||
|
||
// free the private data structure
|
||
kfree (priv);
|
||
|
||
return 0;
|
||
}
|
||
|
||
#endif
|
||
|
||
static int genelink_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
|
||
{
|
||
struct gl_header *header;
|
||
struct gl_packet *packet;
|
||
struct sk_buff *gl_skb;
|
||
u32 size;
|
||
|
||
header = (struct gl_header *) skb->data;
|
||
|
||
// get the packet count of the received skb
|
||
le32_to_cpus (&header->packet_count);
|
||
if ((header->packet_count > GL_MAX_TRANSMIT_PACKETS)
|
||
|| (header->packet_count < 0)) {
|
||
dbg ("genelink: invalid received packet count %d",
|
||
header->packet_count);
|
||
return 0;
|
||
}
|
||
|
||
// set the current packet pointer to the first packet
|
||
packet = &header->packets;
|
||
|
||
// decrement the length for the packet count size 4 bytes
|
||
skb_pull (skb, 4);
|
||
|
||
while (header->packet_count > 1) {
|
||
// get the packet length
|
||
size = packet->packet_length;
|
||
|
||
// this may be a broken packet
|
||
if (size > GL_MAX_PACKET_LEN) {
|
||
dbg ("genelink: invalid rx length %d", size);
|
||
return 0;
|
||
}
|
||
|
||
// allocate the skb for the individual packet
|
||
gl_skb = alloc_skb (size, GFP_ATOMIC);
|
||
if (gl_skb) {
|
||
|
||
// copy the packet data to the new skb
|
||
memcpy(skb_put(gl_skb, size), packet->packet_data, size);
|
||
skb_return (dev, skb);
|
||
}
|
||
|
||
// advance to the next packet
|
||
packet = (struct gl_packet *)
|
||
&packet->packet_data [size];
|
||
header->packet_count--;
|
||
|
||
// shift the data pointer to the next gl_packet
|
||
skb_pull (skb, size + 4);
|
||
}
|
||
|
||
// skip the packet length field 4 bytes
|
||
skb_pull (skb, 4);
|
||
|
||
if (skb->len > GL_MAX_PACKET_LEN) {
|
||
dbg ("genelink: invalid rx length %d", skb->len);
|
||
return 0;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
static struct sk_buff *
|
||
genelink_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
|
||
{
|
||
int padlen;
|
||
int length = skb->len;
|
||
int headroom = skb_headroom (skb);
|
||
int tailroom = skb_tailroom (skb);
|
||
u32 *packet_count;
|
||
u32 *packet_len;
|
||
|
||
// FIXME: magic numbers, bleech
|
||
padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1;
|
||
|
||
if ((!skb_cloned (skb))
|
||
&& ((headroom + tailroom) >= (padlen + (4 + 4*1)))) {
|
||
if ((headroom < (4 + 4*1)) || (tailroom < padlen)) {
|
||
skb->data = memmove (skb->head + (4 + 4*1),
|
||
skb->data, skb->len);
|
||
skb->tail = skb->data + skb->len;
|
||
}
|
||
} else {
|
||
struct sk_buff *skb2;
|
||
skb2 = skb_copy_expand (skb, (4 + 4*1) , padlen, flags);
|
||
dev_kfree_skb_any (skb);
|
||
skb = skb2;
|
||
if (!skb)
|
||
return NULL;
|
||
}
|
||
|
||
// attach the packet count to the header
|
||
packet_count = (u32 *) skb_push (skb, (4 + 4*1));
|
||
packet_len = packet_count + 1;
|
||
|
||
// FIXME little endian?
|
||
*packet_count = 1;
|
||
*packet_len = length;
|
||
|
||
// add padding byte
|
||
if ((skb->len % dev->maxpacket) == 0)
|
||
skb_put (skb, 1);
|
||
|
||
return skb;
|
||
}
|
||
|
||
static const struct driver_info genelink_info = {
|
||
.description = "Genesys GeneLink",
|
||
.flags = FLAG_FRAMING_GL | FLAG_NO_SETINT,
|
||
.rx_fixup = genelink_rx_fixup,
|
||
.tx_fixup = genelink_tx_fixup,
|
||
|
||
.in = 1, .out = 2,
|
||
|
||
#ifdef GENELINK_ACK
|
||
.check_connect =genelink_check_connect,
|
||
#endif
|
||
};
|
||
|
||
#endif /* CONFIG_USB_GENESYS */
|
||
|
||
|
||
|
||
#ifdef CONFIG_USB_NET1080
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* Netchip 1080 driver ... http://www.netchip.com
|
||
* Used in LapLink cables
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
#define dev_packet_id data[0]
|
||
#define frame_errors data[1]
|
||
|
||
/*
|
||
* NetChip framing of ethernet packets, supporting additional error
|
||
* checks for links that may drop bulk packets from inside messages.
|
||
* Odd USB length == always short read for last usb packet.
|
||
* - nc_header
|
||
* - Ethernet header (14 bytes)
|
||
* - payload
|
||
* - (optional padding byte, if needed so length becomes odd)
|
||
* - nc_trailer
|
||
*
|
||
* This framing is to be avoided for non-NetChip devices.
|
||
*/
|
||
|
||
struct nc_header { // packed:
|
||
__le16 hdr_len; // sizeof nc_header (LE, all)
|
||
__le16 packet_len; // payload size (including ethhdr)
|
||
__le16 packet_id; // detects dropped packets
|
||
#define MIN_HEADER 6
|
||
|
||
// all else is optional, and must start with:
|
||
// u16 vendorId; // from usb-if
|
||
// u16 productId;
|
||
} __attribute__((__packed__));
|
||
|
||
#define PAD_BYTE ((unsigned char)0xAC)
|
||
|
||
struct nc_trailer {
|
||
__le16 packet_id;
|
||
} __attribute__((__packed__));
|
||
|
||
// packets may use FLAG_FRAMING_NC and optional pad
|
||
#define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
|
||
+ sizeof (struct ethhdr) \
|
||
+ (mtu) \
|
||
+ 1 \
|
||
+ sizeof (struct nc_trailer))
|
||
|
||
#define MIN_FRAMED FRAMED_SIZE(0)
|
||
|
||
|
||
/*
|
||
* Zero means no timeout; else, how long a 64 byte bulk packet may be queued
|
||
* before the hardware drops it. If that's done, the driver will need to
|
||
* frame network packets to guard against the dropped USB packets. The win32
|
||
* driver sets this for both sides of the link.
|
||
*/
|
||
#define NC_READ_TTL_MS ((u8)255) // ms
|
||
|
||
/*
|
||
* We ignore most registers and EEPROM contents.
|
||
*/
|
||
#define REG_USBCTL ((u8)0x04)
|
||
#define REG_TTL ((u8)0x10)
|
||
#define REG_STATUS ((u8)0x11)
|
||
|
||
/*
|
||
* Vendor specific requests to read/write data
|
||
*/
|
||
#define REQUEST_REGISTER ((u8)0x10)
|
||
#define REQUEST_EEPROM ((u8)0x11)
|
||
|
||
static int
|
||
nc_vendor_read (struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr)
|
||
{
|
||
int status = usb_control_msg (dev->udev,
|
||
usb_rcvctrlpipe (dev->udev, 0),
|
||
req,
|
||
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
||
0, regnum,
|
||
retval_ptr, sizeof *retval_ptr,
|
||
CONTROL_TIMEOUT_MS);
|
||
if (status > 0)
|
||
status = 0;
|
||
if (!status)
|
||
le16_to_cpus (retval_ptr);
|
||
return status;
|
||
}
|
||
|
||
static inline int
|
||
nc_register_read (struct usbnet *dev, u8 regnum, u16 *retval_ptr)
|
||
{
|
||
return nc_vendor_read (dev, REQUEST_REGISTER, regnum, retval_ptr);
|
||
}
|
||
|
||
// no retval ... can become async, usable in_interrupt()
|
||
static void
|
||
nc_vendor_write (struct usbnet *dev, u8 req, u8 regnum, u16 value)
|
||
{
|
||
usb_control_msg (dev->udev,
|
||
usb_sndctrlpipe (dev->udev, 0),
|
||
req,
|
||
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
||
value, regnum,
|
||
NULL, 0, // data is in setup packet
|
||
CONTROL_TIMEOUT_MS);
|
||
}
|
||
|
||
static inline void
|
||
nc_register_write (struct usbnet *dev, u8 regnum, u16 value)
|
||
{
|
||
nc_vendor_write (dev, REQUEST_REGISTER, regnum, value);
|
||
}
|
||
|
||
|
||
#if 0
|
||
static void nc_dump_registers (struct usbnet *dev)
|
||
{
|
||
u8 reg;
|
||
u16 *vp = kmalloc (sizeof (u16));
|
||
|
||
if (!vp) {
|
||
dbg ("no memory?");
|
||
return;
|
||
}
|
||
|
||
dbg ("%s registers:", dev->net->name);
|
||
for (reg = 0; reg < 0x20; reg++) {
|
||
int retval;
|
||
|
||
// reading some registers is trouble
|
||
if (reg >= 0x08 && reg <= 0xf)
|
||
continue;
|
||
if (reg >= 0x12 && reg <= 0x1e)
|
||
continue;
|
||
|
||
retval = nc_register_read (dev, reg, vp);
|
||
if (retval < 0)
|
||
dbg ("%s reg [0x%x] ==> error %d",
|
||
dev->net->name, reg, retval);
|
||
else
|
||
dbg ("%s reg [0x%x] = 0x%x",
|
||
dev->net->name, reg, *vp);
|
||
}
|
||
kfree (vp);
|
||
}
|
||
#endif
|
||
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
/*
|
||
* Control register
|
||
*/
|
||
|
||
#define USBCTL_WRITABLE_MASK 0x1f0f
|
||
// bits 15-13 reserved, r/o
|
||
#define USBCTL_ENABLE_LANG (1 << 12)
|
||
#define USBCTL_ENABLE_MFGR (1 << 11)
|
||
#define USBCTL_ENABLE_PROD (1 << 10)
|
||
#define USBCTL_ENABLE_SERIAL (1 << 9)
|
||
#define USBCTL_ENABLE_DEFAULTS (1 << 8)
|
||
// bits 7-4 reserved, r/o
|
||
#define USBCTL_FLUSH_OTHER (1 << 3)
|
||
#define USBCTL_FLUSH_THIS (1 << 2)
|
||
#define USBCTL_DISCONN_OTHER (1 << 1)
|
||
#define USBCTL_DISCONN_THIS (1 << 0)
|
||
|
||
static inline void nc_dump_usbctl (struct usbnet *dev, u16 usbctl)
|
||
{
|
||
if (!netif_msg_link (dev))
|
||
return;
|
||
devdbg (dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
|
||
" this%s%s;"
|
||
" other%s%s; r/o 0x%x",
|
||
dev->udev->bus->bus_name, dev->udev->devpath,
|
||
usbctl,
|
||
(usbctl & USBCTL_ENABLE_LANG) ? " lang" : "",
|
||
(usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "",
|
||
(usbctl & USBCTL_ENABLE_PROD) ? " prod" : "",
|
||
(usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "",
|
||
(usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "",
|
||
|
||
(usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "",
|
||
(usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "",
|
||
(usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "",
|
||
(usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "",
|
||
usbctl & ~USBCTL_WRITABLE_MASK
|
||
);
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
/*
|
||
* Status register
|
||
*/
|
||
|
||
#define STATUS_PORT_A (1 << 15)
|
||
|
||
#define STATUS_CONN_OTHER (1 << 14)
|
||
#define STATUS_SUSPEND_OTHER (1 << 13)
|
||
#define STATUS_MAILBOX_OTHER (1 << 12)
|
||
#define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03)
|
||
|
||
#define STATUS_CONN_THIS (1 << 6)
|
||
#define STATUS_SUSPEND_THIS (1 << 5)
|
||
#define STATUS_MAILBOX_THIS (1 << 4)
|
||
#define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03)
|
||
|
||
#define STATUS_UNSPEC_MASK 0x0c8c
|
||
#define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK))
|
||
|
||
|
||
static inline void nc_dump_status (struct usbnet *dev, u16 status)
|
||
{
|
||
if (!netif_msg_link (dev))
|
||
return;
|
||
devdbg (dev, "net1080 %s-%s status 0x%x:"
|
||
" this (%c) PKT=%d%s%s%s;"
|
||
" other PKT=%d%s%s%s; unspec 0x%x",
|
||
dev->udev->bus->bus_name, dev->udev->devpath,
|
||
status,
|
||
|
||
// XXX the packet counts don't seem right
|
||
// (1 at reset, not 0); maybe UNSPEC too
|
||
|
||
(status & STATUS_PORT_A) ? 'A' : 'B',
|
||
STATUS_PACKETS_THIS (status),
|
||
(status & STATUS_CONN_THIS) ? " CON" : "",
|
||
(status & STATUS_SUSPEND_THIS) ? " SUS" : "",
|
||
(status & STATUS_MAILBOX_THIS) ? " MBOX" : "",
|
||
|
||
STATUS_PACKETS_OTHER (status),
|
||
(status & STATUS_CONN_OTHER) ? " CON" : "",
|
||
(status & STATUS_SUSPEND_OTHER) ? " SUS" : "",
|
||
(status & STATUS_MAILBOX_OTHER) ? " MBOX" : "",
|
||
|
||
status & STATUS_UNSPEC_MASK
|
||
);
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
/*
|
||
* TTL register
|
||
*/
|
||
|
||
#define TTL_THIS(ttl) (0x00ff & ttl)
|
||
#define TTL_OTHER(ttl) (0x00ff & (ttl >> 8))
|
||
#define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this))))
|
||
|
||
static inline void nc_dump_ttl (struct usbnet *dev, u16 ttl)
|
||
{
|
||
if (netif_msg_link (dev))
|
||
devdbg (dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
|
||
dev->udev->bus->bus_name, dev->udev->devpath,
|
||
ttl, TTL_THIS (ttl), TTL_OTHER (ttl));
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static int net1080_reset (struct usbnet *dev)
|
||
{
|
||
u16 usbctl, status, ttl;
|
||
u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
|
||
int retval;
|
||
|
||
if (!vp)
|
||
return -ENOMEM;
|
||
|
||
// nc_dump_registers (dev);
|
||
|
||
if ((retval = nc_register_read (dev, REG_STATUS, vp)) < 0) {
|
||
dbg ("can't read %s-%s status: %d",
|
||
dev->udev->bus->bus_name, dev->udev->devpath, retval);
|
||
goto done;
|
||
}
|
||
status = *vp;
|
||
nc_dump_status (dev, status);
|
||
|
||
if ((retval = nc_register_read (dev, REG_USBCTL, vp)) < 0) {
|
||
dbg ("can't read USBCTL, %d", retval);
|
||
goto done;
|
||
}
|
||
usbctl = *vp;
|
||
nc_dump_usbctl (dev, usbctl);
|
||
|
||
nc_register_write (dev, REG_USBCTL,
|
||
USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER);
|
||
|
||
if ((retval = nc_register_read (dev, REG_TTL, vp)) < 0) {
|
||
dbg ("can't read TTL, %d", retval);
|
||
goto done;
|
||
}
|
||
ttl = *vp;
|
||
// nc_dump_ttl (dev, ttl);
|
||
|
||
nc_register_write (dev, REG_TTL,
|
||
MK_TTL (NC_READ_TTL_MS, TTL_OTHER (ttl)) );
|
||
dbg ("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS);
|
||
|
||
if (netif_msg_link (dev))
|
||
devinfo (dev, "port %c, peer %sconnected",
|
||
(status & STATUS_PORT_A) ? 'A' : 'B',
|
||
(status & STATUS_CONN_OTHER) ? "" : "dis"
|
||
);
|
||
retval = 0;
|
||
|
||
done:
|
||
kfree (vp);
|
||
return retval;
|
||
}
|
||
|
||
static int net1080_check_connect (struct usbnet *dev)
|
||
{
|
||
int retval;
|
||
u16 status;
|
||
u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
|
||
|
||
if (!vp)
|
||
return -ENOMEM;
|
||
retval = nc_register_read (dev, REG_STATUS, vp);
|
||
status = *vp;
|
||
kfree (vp);
|
||
if (retval != 0) {
|
||
dbg ("%s net1080_check_conn read - %d", dev->net->name, retval);
|
||
return retval;
|
||
}
|
||
if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER)
|
||
return -ENOLINK;
|
||
return 0;
|
||
}
|
||
|
||
static void nc_flush_complete (struct urb *urb, struct pt_regs *regs)
|
||
{
|
||
kfree (urb->context);
|
||
usb_free_urb(urb);
|
||
}
|
||
|
||
static void nc_ensure_sync (struct usbnet *dev)
|
||
{
|
||
dev->frame_errors++;
|
||
if (dev->frame_errors > 5) {
|
||
struct urb *urb;
|
||
struct usb_ctrlrequest *req;
|
||
int status;
|
||
|
||
/* Send a flush */
|
||
urb = usb_alloc_urb (0, SLAB_ATOMIC);
|
||
if (!urb)
|
||
return;
|
||
|
||
req = kmalloc (sizeof *req, GFP_ATOMIC);
|
||
if (!req) {
|
||
usb_free_urb (urb);
|
||
return;
|
||
}
|
||
|
||
req->bRequestType = USB_DIR_OUT
|
||
| USB_TYPE_VENDOR
|
||
| USB_RECIP_DEVICE;
|
||
req->bRequest = REQUEST_REGISTER;
|
||
req->wValue = cpu_to_le16 (USBCTL_FLUSH_THIS
|
||
| USBCTL_FLUSH_OTHER);
|
||
req->wIndex = cpu_to_le16 (REG_USBCTL);
|
||
req->wLength = cpu_to_le16 (0);
|
||
|
||
/* queue an async control request, we don't need
|
||
* to do anything when it finishes except clean up.
|
||
*/
|
||
usb_fill_control_urb (urb, dev->udev,
|
||
usb_sndctrlpipe (dev->udev, 0),
|
||
(unsigned char *) req,
|
||
NULL, 0,
|
||
nc_flush_complete, req);
|
||
status = usb_submit_urb (urb, GFP_ATOMIC);
|
||
if (status) {
|
||
kfree (req);
|
||
usb_free_urb (urb);
|
||
return;
|
||
}
|
||
|
||
if (netif_msg_rx_err (dev))
|
||
devdbg (dev, "flush net1080; too many framing errors");
|
||
dev->frame_errors = 0;
|
||
}
|
||
}
|
||
|
||
static int net1080_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
|
||
{
|
||
struct nc_header *header;
|
||
struct nc_trailer *trailer;
|
||
u16 hdr_len, packet_len;
|
||
|
||
if (!(skb->len & 0x01)
|
||
|| MIN_FRAMED > skb->len
|
||
|| skb->len > FRAMED_SIZE (dev->net->mtu)) {
|
||
dev->stats.rx_frame_errors++;
|
||
dbg ("rx framesize %d range %d..%d mtu %d", skb->len,
|
||
(int)MIN_FRAMED, (int)FRAMED_SIZE (dev->net->mtu),
|
||
dev->net->mtu);
|
||
nc_ensure_sync (dev);
|
||
return 0;
|
||
}
|
||
|
||
header = (struct nc_header *) skb->data;
|
||
hdr_len = le16_to_cpup (&header->hdr_len);
|
||
packet_len = le16_to_cpup (&header->packet_len);
|
||
if (FRAMED_SIZE (packet_len) > MAX_PACKET) {
|
||
dev->stats.rx_frame_errors++;
|
||
dbg ("packet too big, %d", packet_len);
|
||
nc_ensure_sync (dev);
|
||
return 0;
|
||
} else if (hdr_len < MIN_HEADER) {
|
||
dev->stats.rx_frame_errors++;
|
||
dbg ("header too short, %d", hdr_len);
|
||
nc_ensure_sync (dev);
|
||
return 0;
|
||
} else if (hdr_len > MIN_HEADER) {
|
||
// out of band data for us?
|
||
dbg ("header OOB, %d bytes", hdr_len - MIN_HEADER);
|
||
nc_ensure_sync (dev);
|
||
// switch (vendor/product ids) { ... }
|
||
}
|
||
skb_pull (skb, hdr_len);
|
||
|
||
trailer = (struct nc_trailer *)
|
||
(skb->data + skb->len - sizeof *trailer);
|
||
skb_trim (skb, skb->len - sizeof *trailer);
|
||
|
||
if ((packet_len & 0x01) == 0) {
|
||
if (skb->data [packet_len] != PAD_BYTE) {
|
||
dev->stats.rx_frame_errors++;
|
||
dbg ("bad pad");
|
||
return 0;
|
||
}
|
||
skb_trim (skb, skb->len - 1);
|
||
}
|
||
if (skb->len != packet_len) {
|
||
dev->stats.rx_frame_errors++;
|
||
dbg ("bad packet len %d (expected %d)",
|
||
skb->len, packet_len);
|
||
nc_ensure_sync (dev);
|
||
return 0;
|
||
}
|
||
if (header->packet_id != get_unaligned (&trailer->packet_id)) {
|
||
dev->stats.rx_fifo_errors++;
|
||
dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
|
||
le16_to_cpu (header->packet_id),
|
||
le16_to_cpu (trailer->packet_id));
|
||
return 0;
|
||
}
|
||
#if 0
|
||
devdbg (dev, "frame <rx h %d p %d id %d", header->hdr_len,
|
||
header->packet_len, header->packet_id);
|
||
#endif
|
||
dev->frame_errors = 0;
|
||
return 1;
|
||
}
|
||
|
||
static struct sk_buff *
|
||
net1080_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
|
||
{
|
||
int padlen;
|
||
struct sk_buff *skb2;
|
||
|
||
padlen = ((skb->len + sizeof (struct nc_header)
|
||
+ sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
|
||
if (!skb_cloned (skb)) {
|
||
int headroom = skb_headroom (skb);
|
||
int tailroom = skb_tailroom (skb);
|
||
|
||
if ((padlen + sizeof (struct nc_trailer)) <= tailroom
|
||
&& sizeof (struct nc_header) <= headroom)
|
||
/* There's enough head and tail room */
|
||
return skb;
|
||
|
||
if ((sizeof (struct nc_header) + padlen
|
||
+ sizeof (struct nc_trailer)) <
|
||
(headroom + tailroom)) {
|
||
/* There's enough total room, so just readjust */
|
||
skb->data = memmove (skb->head
|
||
+ sizeof (struct nc_header),
|
||
skb->data, skb->len);
|
||
skb->tail = skb->data + skb->len;
|
||
return skb;
|
||
}
|
||
}
|
||
|
||
/* Create a new skb to use with the correct size */
|
||
skb2 = skb_copy_expand (skb,
|
||
sizeof (struct nc_header),
|
||
sizeof (struct nc_trailer) + padlen,
|
||
flags);
|
||
dev_kfree_skb_any (skb);
|
||
return skb2;
|
||
}
|
||
|
||
static const struct driver_info net1080_info = {
|
||
.description = "NetChip TurboCONNECT",
|
||
.flags = FLAG_FRAMING_NC,
|
||
.reset = net1080_reset,
|
||
.check_connect =net1080_check_connect,
|
||
.rx_fixup = net1080_rx_fixup,
|
||
.tx_fixup = net1080_tx_fixup,
|
||
};
|
||
|
||
#endif /* CONFIG_USB_NET1080 */
|
||
|
||
|
||
|
||
#ifdef CONFIG_USB_PL2301
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com
|
||
*
|
||
* The protocol and handshaking used here should be bug-compatible
|
||
* with the Linux 2.2 "plusb" driver, by Deti Fliegl.
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
/*
|
||
* Bits 0-4 can be used for software handshaking; they're set from
|
||
* one end, cleared from the other, "read" with the interrupt byte.
|
||
*/
|
||
#define PL_S_EN (1<<7) /* (feature only) suspend enable */
|
||
/* reserved bit -- rx ready (6) ? */
|
||
#define PL_TX_READY (1<<5) /* (interrupt only) transmit ready */
|
||
#define PL_RESET_OUT (1<<4) /* reset output pipe */
|
||
#define PL_RESET_IN (1<<3) /* reset input pipe */
|
||
#define PL_TX_C (1<<2) /* transmission complete */
|
||
#define PL_TX_REQ (1<<1) /* transmission received */
|
||
#define PL_PEER_E (1<<0) /* peer exists */
|
||
|
||
static inline int
|
||
pl_vendor_req (struct usbnet *dev, u8 req, u8 val, u8 index)
|
||
{
|
||
return usb_control_msg (dev->udev,
|
||
usb_rcvctrlpipe (dev->udev, 0),
|
||
req,
|
||
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
||
val, index,
|
||
NULL, 0,
|
||
CONTROL_TIMEOUT_MS);
|
||
}
|
||
|
||
static inline int
|
||
pl_clear_QuickLink_features (struct usbnet *dev, int val)
|
||
{
|
||
return pl_vendor_req (dev, 1, (u8) val, 0);
|
||
}
|
||
|
||
static inline int
|
||
pl_set_QuickLink_features (struct usbnet *dev, int val)
|
||
{
|
||
return pl_vendor_req (dev, 3, (u8) val, 0);
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static int pl_reset (struct usbnet *dev)
|
||
{
|
||
/* some units seem to need this reset, others reject it utterly.
|
||
* FIXME be more like "naplink" or windows drivers.
|
||
*/
|
||
(void) pl_set_QuickLink_features (dev,
|
||
PL_S_EN|PL_RESET_OUT|PL_RESET_IN|PL_PEER_E);
|
||
return 0;
|
||
}
|
||
|
||
static const struct driver_info prolific_info = {
|
||
.description = "Prolific PL-2301/PL-2302",
|
||
.flags = FLAG_NO_SETINT,
|
||
/* some PL-2302 versions seem to fail usb_set_interface() */
|
||
.reset = pl_reset,
|
||
};
|
||
|
||
#endif /* CONFIG_USB_PL2301 */
|
||
|
||
|
||
#ifdef CONFIG_USB_KC2190
|
||
#define HAVE_HARDWARE
|
||
static const struct driver_info kc2190_info = {
|
||
.description = "KC Technology KC-190",
|
||
};
|
||
#endif /* CONFIG_USB_KC2190 */
|
||
|
||
|
||
#ifdef CONFIG_USB_ARMLINUX
|
||
#define HAVE_HARDWARE
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* Intel's SA-1100 chip integrates basic USB support, and is used
|
||
* in PDAs like some iPaqs, the Yopy, some Zaurus models, and more.
|
||
* When they run Linux, arch/arm/mach-sa1100/usb-eth.c may be used to
|
||
* network using minimal USB framing data.
|
||
*
|
||
* This describes the driver currently in standard ARM Linux kernels.
|
||
* The Zaurus uses a different driver (see later).
|
||
*
|
||
* PXA25x and PXA210 use XScale cores (ARM v5TE) with better USB support
|
||
* and different USB endpoint numbering than the SA1100 devices. The
|
||
* mach-pxa/usb-eth.c driver re-uses the device ids from mach-sa1100
|
||
* so we rely on the endpoint descriptors.
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
static const struct driver_info linuxdev_info = {
|
||
.description = "Linux Device",
|
||
.check_connect = always_connected,
|
||
};
|
||
|
||
static const struct driver_info yopy_info = {
|
||
.description = "Yopy",
|
||
.check_connect = always_connected,
|
||
};
|
||
|
||
static const struct driver_info blob_info = {
|
||
.description = "Boot Loader OBject",
|
||
.check_connect = always_connected,
|
||
};
|
||
|
||
#endif /* CONFIG_USB_ARMLINUX */
|
||
|
||
|
||
#ifdef CONFIG_USB_ZAURUS
|
||
#define HAVE_HARDWARE
|
||
|
||
#include <linux/crc32.h>
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* Zaurus is also a SA-1110 based PDA, but one using a different driver
|
||
* (and framing) for its USB slave/gadget controller than the case above.
|
||
*
|
||
* For the current version of that driver, the main way that framing is
|
||
* nonstandard (also from perspective of the CDC ethernet model!) is a
|
||
* crc32, added to help detect when some sa1100 usb-to-memory DMA errata
|
||
* haven't been fully worked around. Also, all Zaurii use the same
|
||
* default Ethernet address.
|
||
*
|
||
* PXA based models use the same framing, and also can't implement
|
||
* set_interface properly.
|
||
*
|
||
* All known Zaurii lie about their standards conformance. Most lie by
|
||
* saying they support CDC Ethernet. Some lie and say they support CDC
|
||
* MDLM (as if for access to cell phone modems). Someone, please beat
|
||
* on Sharp (and other such vendors) for a while with a cluestick.
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
static struct sk_buff *
|
||
zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
|
||
{
|
||
int padlen;
|
||
struct sk_buff *skb2;
|
||
|
||
padlen = 2;
|
||
if (!skb_cloned (skb)) {
|
||
int tailroom = skb_tailroom (skb);
|
||
if ((padlen + 4) <= tailroom)
|
||
goto done;
|
||
}
|
||
skb2 = skb_copy_expand (skb, 0, 4 + padlen, flags);
|
||
dev_kfree_skb_any (skb);
|
||
skb = skb2;
|
||
if (skb) {
|
||
u32 fcs;
|
||
done:
|
||
fcs = crc32_le (~0, skb->data, skb->len);
|
||
fcs = ~fcs;
|
||
|
||
*skb_put (skb, 1) = fcs & 0xff;
|
||
*skb_put (skb, 1) = (fcs>> 8) & 0xff;
|
||
*skb_put (skb, 1) = (fcs>>16) & 0xff;
|
||
*skb_put (skb, 1) = (fcs>>24) & 0xff;
|
||
}
|
||
return skb;
|
||
}
|
||
|
||
static const struct driver_info zaurus_sl5x00_info = {
|
||
.description = "Sharp Zaurus SL-5x00",
|
||
.flags = FLAG_FRAMING_Z,
|
||
.check_connect = always_connected,
|
||
.bind = generic_cdc_bind,
|
||
.unbind = cdc_unbind,
|
||
.tx_fixup = zaurus_tx_fixup,
|
||
};
|
||
#define ZAURUS_STRONGARM_INFO ((unsigned long)&zaurus_sl5x00_info)
|
||
|
||
static const struct driver_info zaurus_pxa_info = {
|
||
.description = "Sharp Zaurus, PXA-2xx based",
|
||
.flags = FLAG_FRAMING_Z,
|
||
.check_connect = always_connected,
|
||
.bind = generic_cdc_bind,
|
||
.unbind = cdc_unbind,
|
||
.tx_fixup = zaurus_tx_fixup,
|
||
};
|
||
#define ZAURUS_PXA_INFO ((unsigned long)&zaurus_pxa_info)
|
||
|
||
static const struct driver_info olympus_mxl_info = {
|
||
.description = "Olympus R1000",
|
||
.flags = FLAG_FRAMING_Z,
|
||
.check_connect = always_connected,
|
||
.bind = generic_cdc_bind,
|
||
.unbind = cdc_unbind,
|
||
.tx_fixup = zaurus_tx_fixup,
|
||
};
|
||
#define OLYMPUS_MXL_INFO ((unsigned long)&olympus_mxl_info)
|
||
|
||
|
||
/* Some more recent products using Lineo/Belcarra code will wrongly claim
|
||
* CDC MDLM conformance. They aren't conformant: data endpoints live
|
||
* in the control interface, there's no data interface, and it's not used
|
||
* to talk to a cell phone radio. But at least we can detect these two
|
||
* pseudo-classes, rather than growing this product list with entries for
|
||
* each new nonconformant product (sigh).
|
||
*/
|
||
static const u8 safe_guid[16] = {
|
||
0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6,
|
||
0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f,
|
||
};
|
||
static const u8 blan_guid[16] = {
|
||
0x74, 0xf0, 0x3d, 0xbd, 0x1e, 0xc1, 0x44, 0x70,
|
||
0xa3, 0x67, 0x71, 0x34, 0xc9, 0xf5, 0x54, 0x37,
|
||
};
|
||
|
||
static int blan_mdlm_bind (struct usbnet *dev, struct usb_interface *intf)
|
||
{
|
||
u8 *buf = intf->cur_altsetting->extra;
|
||
int len = intf->cur_altsetting->extralen;
|
||
struct usb_cdc_mdlm_desc *desc = NULL;
|
||
struct usb_cdc_mdlm_detail_desc *detail = NULL;
|
||
|
||
while (len > 3) {
|
||
if (buf [1] != USB_DT_CS_INTERFACE)
|
||
goto next_desc;
|
||
|
||
/* use bDescriptorSubType, and just verify that we get a
|
||
* "BLAN" (or "SAFE") descriptor.
|
||
*/
|
||
switch (buf [2]) {
|
||
case USB_CDC_MDLM_TYPE:
|
||
if (desc) {
|
||
dev_dbg (&intf->dev, "extra MDLM\n");
|
||
goto bad_desc;
|
||
}
|
||
desc = (void *) buf;
|
||
if (desc->bLength != sizeof *desc) {
|
||
dev_dbg (&intf->dev, "MDLM len %u\n",
|
||
desc->bLength);
|
||
goto bad_desc;
|
||
}
|
||
/* expect bcdVersion 1.0, ignore */
|
||
if (memcmp(&desc->bGUID, blan_guid, 16)
|
||
&& memcmp(&desc->bGUID, safe_guid, 16) ) {
|
||
/* hey, this one might _really_ be MDLM! */
|
||
dev_dbg (&intf->dev, "MDLM guid\n");
|
||
goto bad_desc;
|
||
}
|
||
break;
|
||
case USB_CDC_MDLM_DETAIL_TYPE:
|
||
if (detail) {
|
||
dev_dbg (&intf->dev, "extra MDLM detail\n");
|
||
goto bad_desc;
|
||
}
|
||
detail = (void *) buf;
|
||
switch (detail->bGuidDescriptorType) {
|
||
case 0: /* "SAFE" */
|
||
if (detail->bLength != (sizeof *detail + 2))
|
||
goto bad_detail;
|
||
break;
|
||
case 1: /* "BLAN" */
|
||
if (detail->bLength != (sizeof *detail + 3))
|
||
goto bad_detail;
|
||
break;
|
||
default:
|
||
goto bad_detail;
|
||
}
|
||
|
||
/* assuming we either noticed BLAN already, or will
|
||
* find it soon, there are some data bytes here:
|
||
* - bmNetworkCapabilities (unused)
|
||
* - bmDataCapabilities (bits, see below)
|
||
* - bPad (ignored, for PADAFTER -- BLAN-only)
|
||
* bits are:
|
||
* - 0x01 -- Zaurus framing (add CRC)
|
||
* - 0x02 -- PADBEFORE (CRC includes some padding)
|
||
* - 0x04 -- PADAFTER (some padding after CRC)
|
||
* - 0x08 -- "fermat" packet mangling (for hw bugs)
|
||
* the PADBEFORE appears not to matter; we interop
|
||
* with devices that use it and those that don't.
|
||
*/
|
||
if ((detail->bDetailData[1] & ~02) != 0x01) {
|
||
/* bmDataCapabilites == 0 would be fine too,
|
||
* but framing is minidriver-coupled for now.
|
||
*/
|
||
bad_detail:
|
||
dev_dbg (&intf->dev,
|
||
"bad MDLM detail, %d %d %d\n",
|
||
detail->bLength,
|
||
detail->bDetailData[0],
|
||
detail->bDetailData[2]);
|
||
goto bad_desc;
|
||
}
|
||
break;
|
||
}
|
||
next_desc:
|
||
len -= buf [0]; /* bLength */
|
||
buf += buf [0];
|
||
}
|
||
|
||
if (!desc || !detail) {
|
||
dev_dbg (&intf->dev, "missing cdc mdlm %s%sdescriptor\n",
|
||
desc ? "" : "func ",
|
||
detail ? "" : "detail ");
|
||
goto bad_desc;
|
||
}
|
||
|
||
/* There's probably a CDC Ethernet descriptor there, but we can't
|
||
* rely on the Ethernet address it provides since not all vendors
|
||
* bother to make it unique. Likewise there's no point in tracking
|
||
* of the CDC event notifications.
|
||
*/
|
||
return get_endpoints (dev, intf);
|
||
|
||
bad_desc:
|
||
dev_info (&dev->udev->dev, "unsupported MDLM descriptors\n");
|
||
return -ENODEV;
|
||
}
|
||
|
||
static const struct driver_info bogus_mdlm_info = {
|
||
.description = "pseudo-MDLM (BLAN) device",
|
||
.flags = FLAG_FRAMING_Z,
|
||
.check_connect = always_connected,
|
||
.tx_fixup = zaurus_tx_fixup,
|
||
.bind = blan_mdlm_bind,
|
||
};
|
||
|
||
#else
|
||
|
||
/* blacklist all those devices */
|
||
#define ZAURUS_STRONGARM_INFO 0
|
||
#define ZAURUS_PXA_INFO 0
|
||
#define OLYMPUS_MXL_INFO 0
|
||
|
||
#endif
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* Network Device Driver (peer link to "Host Device", from USB host)
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
static int usbnet_change_mtu (struct net_device *net, int new_mtu)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
if (new_mtu <= MIN_PACKET || new_mtu > MAX_PACKET)
|
||
return -EINVAL;
|
||
#ifdef CONFIG_USB_NET1080
|
||
if (((dev->driver_info->flags) & FLAG_FRAMING_NC)) {
|
||
if (FRAMED_SIZE (new_mtu) > MAX_PACKET)
|
||
return -EINVAL;
|
||
}
|
||
#endif
|
||
#ifdef CONFIG_USB_GENESYS
|
||
if (((dev->driver_info->flags) & FLAG_FRAMING_GL)
|
||
&& new_mtu > GL_MAX_PACKET_LEN)
|
||
return -EINVAL;
|
||
#endif
|
||
// no second zero-length packet read wanted after mtu-sized packets
|
||
if (((new_mtu + sizeof (struct ethhdr)) % dev->maxpacket) == 0)
|
||
return -EDOM;
|
||
net->mtu = new_mtu;
|
||
return 0;
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static struct net_device_stats *usbnet_get_stats (struct net_device *net)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
return &dev->stats;
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
/* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from
|
||
* completion callbacks. 2.5 should have fixed those bugs...
|
||
*/
|
||
|
||
static void defer_bh (struct usbnet *dev, struct sk_buff *skb)
|
||
{
|
||
struct sk_buff_head *list = skb->list;
|
||
unsigned long flags;
|
||
|
||
spin_lock_irqsave (&list->lock, flags);
|
||
__skb_unlink (skb, list);
|
||
spin_unlock (&list->lock);
|
||
spin_lock (&dev->done.lock);
|
||
__skb_queue_tail (&dev->done, skb);
|
||
if (dev->done.qlen == 1)
|
||
tasklet_schedule (&dev->bh);
|
||
spin_unlock_irqrestore (&dev->done.lock, flags);
|
||
}
|
||
|
||
/* some work can't be done in tasklets, so we use keventd
|
||
*
|
||
* NOTE: annoying asymmetry: if it's active, schedule_work() fails,
|
||
* but tasklet_schedule() doesn't. hope the failure is rare.
|
||
*/
|
||
static void defer_kevent (struct usbnet *dev, int work)
|
||
{
|
||
set_bit (work, &dev->flags);
|
||
if (!schedule_work (&dev->kevent))
|
||
deverr (dev, "kevent %d may have been dropped", work);
|
||
else
|
||
devdbg (dev, "kevent %d scheduled", work);
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static void rx_complete (struct urb *urb, struct pt_regs *regs);
|
||
|
||
static void rx_submit (struct usbnet *dev, struct urb *urb, int flags)
|
||
{
|
||
struct sk_buff *skb;
|
||
struct skb_data *entry;
|
||
int retval = 0;
|
||
unsigned long lockflags;
|
||
size_t size;
|
||
|
||
#ifdef CONFIG_USB_NET1080
|
||
if (dev->driver_info->flags & FLAG_FRAMING_NC)
|
||
size = FRAMED_SIZE (dev->net->mtu);
|
||
else
|
||
#endif
|
||
#ifdef CONFIG_USB_GENESYS
|
||
if (dev->driver_info->flags & FLAG_FRAMING_GL)
|
||
size = GL_RCV_BUF_SIZE;
|
||
else
|
||
#endif
|
||
#ifdef CONFIG_USB_ZAURUS
|
||
if (dev->driver_info->flags & FLAG_FRAMING_Z)
|
||
size = 6 + (sizeof (struct ethhdr) + dev->net->mtu);
|
||
else
|
||
#endif
|
||
#ifdef CONFIG_USB_RNDIS
|
||
if (dev->driver_info->flags & FLAG_FRAMING_RN)
|
||
size = RNDIS_MAX_TRANSFER;
|
||
else
|
||
#endif
|
||
#ifdef CONFIG_USB_AX8817X
|
||
if (dev->driver_info->flags & FLAG_FRAMING_AX)
|
||
size = 2048;
|
||
else
|
||
#endif
|
||
size = (sizeof (struct ethhdr) + dev->net->mtu);
|
||
|
||
if ((skb = alloc_skb (size + NET_IP_ALIGN, flags)) == NULL) {
|
||
if (netif_msg_rx_err (dev))
|
||
devdbg (dev, "no rx skb");
|
||
defer_kevent (dev, EVENT_RX_MEMORY);
|
||
usb_free_urb (urb);
|
||
return;
|
||
}
|
||
skb_reserve (skb, NET_IP_ALIGN);
|
||
|
||
entry = (struct skb_data *) skb->cb;
|
||
entry->urb = urb;
|
||
entry->dev = dev;
|
||
entry->state = rx_start;
|
||
entry->length = 0;
|
||
|
||
usb_fill_bulk_urb (urb, dev->udev, dev->in,
|
||
skb->data, size, rx_complete, skb);
|
||
urb->transfer_flags |= URB_ASYNC_UNLINK;
|
||
|
||
spin_lock_irqsave (&dev->rxq.lock, lockflags);
|
||
|
||
if (netif_running (dev->net)
|
||
&& netif_device_present (dev->net)
|
||
&& !test_bit (EVENT_RX_HALT, &dev->flags)) {
|
||
switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){
|
||
case -EPIPE:
|
||
defer_kevent (dev, EVENT_RX_HALT);
|
||
break;
|
||
case -ENOMEM:
|
||
defer_kevent (dev, EVENT_RX_MEMORY);
|
||
break;
|
||
case -ENODEV:
|
||
if (netif_msg_ifdown (dev))
|
||
devdbg (dev, "device gone");
|
||
netif_device_detach (dev->net);
|
||
break;
|
||
default:
|
||
if (netif_msg_rx_err (dev))
|
||
devdbg (dev, "rx submit, %d", retval);
|
||
tasklet_schedule (&dev->bh);
|
||
break;
|
||
case 0:
|
||
__skb_queue_tail (&dev->rxq, skb);
|
||
}
|
||
} else {
|
||
if (netif_msg_ifdown (dev))
|
||
devdbg (dev, "rx: stopped");
|
||
retval = -ENOLINK;
|
||
}
|
||
spin_unlock_irqrestore (&dev->rxq.lock, lockflags);
|
||
if (retval) {
|
||
dev_kfree_skb_any (skb);
|
||
usb_free_urb (urb);
|
||
}
|
||
}
|
||
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static inline void rx_process (struct usbnet *dev, struct sk_buff *skb)
|
||
{
|
||
if (dev->driver_info->rx_fixup
|
||
&& !dev->driver_info->rx_fixup (dev, skb))
|
||
goto error;
|
||
// else network stack removes extra byte if we forced a short packet
|
||
|
||
if (skb->len)
|
||
skb_return (dev, skb);
|
||
else {
|
||
if (netif_msg_rx_err (dev))
|
||
devdbg (dev, "drop");
|
||
error:
|
||
dev->stats.rx_errors++;
|
||
skb_queue_tail (&dev->done, skb);
|
||
}
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static void rx_complete (struct urb *urb, struct pt_regs *regs)
|
||
{
|
||
struct sk_buff *skb = (struct sk_buff *) urb->context;
|
||
struct skb_data *entry = (struct skb_data *) skb->cb;
|
||
struct usbnet *dev = entry->dev;
|
||
int urb_status = urb->status;
|
||
|
||
skb_put (skb, urb->actual_length);
|
||
entry->state = rx_done;
|
||
entry->urb = NULL;
|
||
|
||
switch (urb_status) {
|
||
// success
|
||
case 0:
|
||
if (MIN_PACKET > skb->len || skb->len > MAX_PACKET) {
|
||
entry->state = rx_cleanup;
|
||
dev->stats.rx_errors++;
|
||
dev->stats.rx_length_errors++;
|
||
if (netif_msg_rx_err (dev))
|
||
devdbg (dev, "rx length %d", skb->len);
|
||
}
|
||
break;
|
||
|
||
// stalls need manual reset. this is rare ... except that
|
||
// when going through USB 2.0 TTs, unplug appears this way.
|
||
// we avoid the highspeed version of the ETIMEOUT/EILSEQ
|
||
// storm, recovering as needed.
|
||
case -EPIPE:
|
||
dev->stats.rx_errors++;
|
||
defer_kevent (dev, EVENT_RX_HALT);
|
||
// FALLTHROUGH
|
||
|
||
// software-driven interface shutdown
|
||
case -ECONNRESET: // async unlink
|
||
case -ESHUTDOWN: // hardware gone
|
||
if (netif_msg_ifdown (dev))
|
||
devdbg (dev, "rx shutdown, code %d", urb_status);
|
||
goto block;
|
||
|
||
// we get controller i/o faults during khubd disconnect() delays.
|
||
// throttle down resubmits, to avoid log floods; just temporarily,
|
||
// so we still recover when the fault isn't a khubd delay.
|
||
case -EPROTO: // ehci
|
||
case -ETIMEDOUT: // ohci
|
||
case -EILSEQ: // uhci
|
||
dev->stats.rx_errors++;
|
||
if (!timer_pending (&dev->delay)) {
|
||
mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES);
|
||
if (netif_msg_link (dev))
|
||
devdbg (dev, "rx throttle %d", urb_status);
|
||
}
|
||
block:
|
||
entry->state = rx_cleanup;
|
||
entry->urb = urb;
|
||
urb = NULL;
|
||
break;
|
||
|
||
// data overrun ... flush fifo?
|
||
case -EOVERFLOW:
|
||
dev->stats.rx_over_errors++;
|
||
// FALLTHROUGH
|
||
|
||
default:
|
||
entry->state = rx_cleanup;
|
||
dev->stats.rx_errors++;
|
||
if (netif_msg_rx_err (dev))
|
||
devdbg (dev, "rx status %d", urb_status);
|
||
break;
|
||
}
|
||
|
||
defer_bh (dev, skb);
|
||
|
||
if (urb) {
|
||
if (netif_running (dev->net)
|
||
&& !test_bit (EVENT_RX_HALT, &dev->flags)) {
|
||
rx_submit (dev, urb, GFP_ATOMIC);
|
||
return;
|
||
}
|
||
usb_free_urb (urb);
|
||
}
|
||
if (netif_msg_rx_err (dev))
|
||
devdbg (dev, "no read resubmitted");
|
||
}
|
||
|
||
static void intr_complete (struct urb *urb, struct pt_regs *regs)
|
||
{
|
||
struct usbnet *dev = urb->context;
|
||
int status = urb->status;
|
||
|
||
switch (status) {
|
||
/* success */
|
||
case 0:
|
||
dev->driver_info->status(dev, urb);
|
||
break;
|
||
|
||
/* software-driven interface shutdown */
|
||
case -ENOENT: // urb killed
|
||
case -ESHUTDOWN: // hardware gone
|
||
if (netif_msg_ifdown (dev))
|
||
devdbg (dev, "intr shutdown, code %d", status);
|
||
return;
|
||
|
||
/* NOTE: not throttling like RX/TX, since this endpoint
|
||
* already polls infrequently
|
||
*/
|
||
default:
|
||
devdbg (dev, "intr status %d", status);
|
||
break;
|
||
}
|
||
|
||
if (!netif_running (dev->net))
|
||
return;
|
||
|
||
memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
|
||
status = usb_submit_urb (urb, GFP_ATOMIC);
|
||
if (status != 0 && netif_msg_timer (dev))
|
||
deverr(dev, "intr resubmit --> %d", status);
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
// unlink pending rx/tx; completion handlers do all other cleanup
|
||
|
||
static int unlink_urbs (struct usbnet *dev, struct sk_buff_head *q)
|
||
{
|
||
unsigned long flags;
|
||
struct sk_buff *skb, *skbnext;
|
||
int count = 0;
|
||
|
||
spin_lock_irqsave (&q->lock, flags);
|
||
for (skb = q->next; skb != (struct sk_buff *) q; skb = skbnext) {
|
||
struct skb_data *entry;
|
||
struct urb *urb;
|
||
int retval;
|
||
|
||
entry = (struct skb_data *) skb->cb;
|
||
urb = entry->urb;
|
||
skbnext = skb->next;
|
||
|
||
// during some PM-driven resume scenarios,
|
||
// these (async) unlinks complete immediately
|
||
retval = usb_unlink_urb (urb);
|
||
if (retval != -EINPROGRESS && retval != 0)
|
||
devdbg (dev, "unlink urb err, %d", retval);
|
||
else
|
||
count++;
|
||
}
|
||
spin_unlock_irqrestore (&q->lock, flags);
|
||
return count;
|
||
}
|
||
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
// precondition: never called in_interrupt
|
||
|
||
static int usbnet_stop (struct net_device *net)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
int temp;
|
||
DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup);
|
||
DECLARE_WAITQUEUE (wait, current);
|
||
|
||
netif_stop_queue (net);
|
||
|
||
if (netif_msg_ifdown (dev))
|
||
devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
|
||
dev->stats.rx_packets, dev->stats.tx_packets,
|
||
dev->stats.rx_errors, dev->stats.tx_errors
|
||
);
|
||
|
||
// ensure there are no more active urbs
|
||
add_wait_queue (&unlink_wakeup, &wait);
|
||
dev->wait = &unlink_wakeup;
|
||
temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq);
|
||
|
||
// maybe wait for deletions to finish.
|
||
while (skb_queue_len (&dev->rxq)
|
||
&& skb_queue_len (&dev->txq)
|
||
&& skb_queue_len (&dev->done)) {
|
||
msleep(UNLINK_TIMEOUT_MS);
|
||
if (netif_msg_ifdown (dev))
|
||
devdbg (dev, "waited for %d urb completions", temp);
|
||
}
|
||
dev->wait = NULL;
|
||
remove_wait_queue (&unlink_wakeup, &wait);
|
||
|
||
usb_kill_urb(dev->interrupt);
|
||
|
||
/* deferred work (task, timer, softirq) must also stop.
|
||
* can't flush_scheduled_work() until we drop rtnl (later),
|
||
* else workers could deadlock; so make workers a NOP.
|
||
*/
|
||
dev->flags = 0;
|
||
del_timer_sync (&dev->delay);
|
||
tasklet_kill (&dev->bh);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
// posts reads, and enables write queuing
|
||
|
||
// precondition: never called in_interrupt
|
||
|
||
static int usbnet_open (struct net_device *net)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
int retval = 0;
|
||
struct driver_info *info = dev->driver_info;
|
||
|
||
// put into "known safe" state
|
||
if (info->reset && (retval = info->reset (dev)) < 0) {
|
||
if (netif_msg_ifup (dev))
|
||
devinfo (dev,
|
||
"open reset fail (%d) usbnet usb-%s-%s, %s",
|
||
retval,
|
||
dev->udev->bus->bus_name, dev->udev->devpath,
|
||
info->description);
|
||
goto done;
|
||
}
|
||
|
||
// insist peer be connected
|
||
if (info->check_connect && (retval = info->check_connect (dev)) < 0) {
|
||
if (netif_msg_ifup (dev))
|
||
devdbg (dev, "can't open; %d", retval);
|
||
goto done;
|
||
}
|
||
|
||
/* start any status interrupt transfer */
|
||
if (dev->interrupt) {
|
||
retval = usb_submit_urb (dev->interrupt, GFP_KERNEL);
|
||
if (retval < 0) {
|
||
if (netif_msg_ifup (dev))
|
||
deverr (dev, "intr submit %d", retval);
|
||
goto done;
|
||
}
|
||
}
|
||
|
||
netif_start_queue (net);
|
||
if (netif_msg_ifup (dev)) {
|
||
char *framing;
|
||
|
||
if (dev->driver_info->flags & FLAG_FRAMING_NC)
|
||
framing = "NetChip";
|
||
else if (dev->driver_info->flags & FLAG_FRAMING_GL)
|
||
framing = "GeneSys";
|
||
else if (dev->driver_info->flags & FLAG_FRAMING_Z)
|
||
framing = "Zaurus";
|
||
else if (dev->driver_info->flags & FLAG_FRAMING_RN)
|
||
framing = "RNDIS";
|
||
else if (dev->driver_info->flags & FLAG_FRAMING_AX)
|
||
framing = "ASIX";
|
||
else
|
||
framing = "simple";
|
||
|
||
devinfo (dev, "open: enable queueing "
|
||
"(rx %d, tx %d) mtu %d %s framing",
|
||
RX_QLEN (dev), TX_QLEN (dev), dev->net->mtu,
|
||
framing);
|
||
}
|
||
|
||
// delay posting reads until we're fully open
|
||
tasklet_schedule (&dev->bh);
|
||
done:
|
||
return retval;
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
strncpy (info->driver, driver_name, sizeof info->driver);
|
||
strncpy (info->version, DRIVER_VERSION, sizeof info->version);
|
||
strncpy (info->fw_version, dev->driver_info->description,
|
||
sizeof info->fw_version);
|
||
usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info);
|
||
}
|
||
|
||
static u32 usbnet_get_link (struct net_device *net)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
/* If a check_connect is defined, return it's results */
|
||
if (dev->driver_info->check_connect)
|
||
return dev->driver_info->check_connect (dev) == 0;
|
||
|
||
/* Otherwise, we're up to avoid breaking scripts */
|
||
return 1;
|
||
}
|
||
|
||
static u32 usbnet_get_msglevel (struct net_device *net)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
return dev->msg_enable;
|
||
}
|
||
|
||
static void usbnet_set_msglevel (struct net_device *net, u32 level)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
dev->msg_enable = level;
|
||
}
|
||
|
||
static int usbnet_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
|
||
{
|
||
#ifdef NEED_MII
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
if (dev->mii.mdio_read != NULL && dev->mii.mdio_write != NULL)
|
||
return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
|
||
}
|
||
#endif
|
||
return -EOPNOTSUPP;
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
/* work that cannot be done in interrupt context uses keventd.
|
||
*
|
||
* NOTE: with 2.5 we could do more of this using completion callbacks,
|
||
* especially now that control transfers can be queued.
|
||
*/
|
||
static void
|
||
kevent (void *data)
|
||
{
|
||
struct usbnet *dev = data;
|
||
int status;
|
||
|
||
/* usb_clear_halt() needs a thread context */
|
||
if (test_bit (EVENT_TX_HALT, &dev->flags)) {
|
||
unlink_urbs (dev, &dev->txq);
|
||
status = usb_clear_halt (dev->udev, dev->out);
|
||
if (status < 0 && status != -EPIPE) {
|
||
if (netif_msg_tx_err (dev))
|
||
deverr (dev, "can't clear tx halt, status %d",
|
||
status);
|
||
} else {
|
||
clear_bit (EVENT_TX_HALT, &dev->flags);
|
||
netif_wake_queue (dev->net);
|
||
}
|
||
}
|
||
if (test_bit (EVENT_RX_HALT, &dev->flags)) {
|
||
unlink_urbs (dev, &dev->rxq);
|
||
status = usb_clear_halt (dev->udev, dev->in);
|
||
if (status < 0 && status != -EPIPE) {
|
||
if (netif_msg_rx_err (dev))
|
||
deverr (dev, "can't clear rx halt, status %d",
|
||
status);
|
||
} else {
|
||
clear_bit (EVENT_RX_HALT, &dev->flags);
|
||
tasklet_schedule (&dev->bh);
|
||
}
|
||
}
|
||
|
||
/* tasklet could resubmit itself forever if memory is tight */
|
||
if (test_bit (EVENT_RX_MEMORY, &dev->flags)) {
|
||
struct urb *urb = NULL;
|
||
|
||
if (netif_running (dev->net))
|
||
urb = usb_alloc_urb (0, GFP_KERNEL);
|
||
else
|
||
clear_bit (EVENT_RX_MEMORY, &dev->flags);
|
||
if (urb != NULL) {
|
||
clear_bit (EVENT_RX_MEMORY, &dev->flags);
|
||
rx_submit (dev, urb, GFP_KERNEL);
|
||
tasklet_schedule (&dev->bh);
|
||
}
|
||
}
|
||
|
||
if (test_bit (EVENT_LINK_RESET, &dev->flags)) {
|
||
struct driver_info *info = dev->driver_info;
|
||
int retval = 0;
|
||
|
||
clear_bit (EVENT_LINK_RESET, &dev->flags);
|
||
if(info->link_reset && (retval = info->link_reset(dev)) < 0) {
|
||
devinfo(dev, "link reset failed (%d) usbnet usb-%s-%s, %s",
|
||
retval,
|
||
dev->udev->bus->bus_name, dev->udev->devpath,
|
||
info->description);
|
||
}
|
||
}
|
||
|
||
if (dev->flags)
|
||
devdbg (dev, "kevent done, flags = 0x%lx",
|
||
dev->flags);
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static void tx_complete (struct urb *urb, struct pt_regs *regs)
|
||
{
|
||
struct sk_buff *skb = (struct sk_buff *) urb->context;
|
||
struct skb_data *entry = (struct skb_data *) skb->cb;
|
||
struct usbnet *dev = entry->dev;
|
||
|
||
if (urb->status == 0) {
|
||
dev->stats.tx_packets++;
|
||
dev->stats.tx_bytes += entry->length;
|
||
} else {
|
||
dev->stats.tx_errors++;
|
||
|
||
switch (urb->status) {
|
||
case -EPIPE:
|
||
defer_kevent (dev, EVENT_TX_HALT);
|
||
break;
|
||
|
||
/* software-driven interface shutdown */
|
||
case -ECONNRESET: // async unlink
|
||
case -ESHUTDOWN: // hardware gone
|
||
break;
|
||
|
||
// like rx, tx gets controller i/o faults during khubd delays
|
||
// and so it uses the same throttling mechanism.
|
||
case -EPROTO: // ehci
|
||
case -ETIMEDOUT: // ohci
|
||
case -EILSEQ: // uhci
|
||
if (!timer_pending (&dev->delay)) {
|
||
mod_timer (&dev->delay,
|
||
jiffies + THROTTLE_JIFFIES);
|
||
if (netif_msg_link (dev))
|
||
devdbg (dev, "tx throttle %d",
|
||
urb->status);
|
||
}
|
||
netif_stop_queue (dev->net);
|
||
break;
|
||
default:
|
||
if (netif_msg_tx_err (dev))
|
||
devdbg (dev, "tx err %d", entry->urb->status);
|
||
break;
|
||
}
|
||
}
|
||
|
||
urb->dev = NULL;
|
||
entry->state = tx_done;
|
||
defer_bh (dev, skb);
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static void usbnet_tx_timeout (struct net_device *net)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
|
||
unlink_urbs (dev, &dev->txq);
|
||
tasklet_schedule (&dev->bh);
|
||
|
||
// FIXME: device recovery -- reset?
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
|
||
{
|
||
struct usbnet *dev = netdev_priv(net);
|
||
int length;
|
||
int retval = NET_XMIT_SUCCESS;
|
||
struct urb *urb = NULL;
|
||
struct skb_data *entry;
|
||
struct driver_info *info = dev->driver_info;
|
||
unsigned long flags;
|
||
#ifdef CONFIG_USB_NET1080
|
||
struct nc_header *header = NULL;
|
||
struct nc_trailer *trailer = NULL;
|
||
#endif /* CONFIG_USB_NET1080 */
|
||
|
||
// some devices want funky USB-level framing, for
|
||
// win32 driver (usually) and/or hardware quirks
|
||
if (info->tx_fixup) {
|
||
skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
|
||
if (!skb) {
|
||
if (netif_msg_tx_err (dev))
|
||
devdbg (dev, "can't tx_fixup skb");
|
||
goto drop;
|
||
}
|
||
}
|
||
length = skb->len;
|
||
|
||
if (!(urb = usb_alloc_urb (0, GFP_ATOMIC))) {
|
||
if (netif_msg_tx_err (dev))
|
||
devdbg (dev, "no urb");
|
||
goto drop;
|
||
}
|
||
|
||
entry = (struct skb_data *) skb->cb;
|
||
entry->urb = urb;
|
||
entry->dev = dev;
|
||
entry->state = tx_start;
|
||
entry->length = length;
|
||
|
||
// FIXME: reorganize a bit, so that fixup() fills out NetChip
|
||
// framing too. (Packet ID update needs the spinlock...)
|
||
// [ BETTER: we already own net->xmit_lock, that's enough ]
|
||
|
||
#ifdef CONFIG_USB_NET1080
|
||
if (info->flags & FLAG_FRAMING_NC) {
|
||
header = (struct nc_header *) skb_push (skb, sizeof *header);
|
||
header->hdr_len = cpu_to_le16 (sizeof (*header));
|
||
header->packet_len = cpu_to_le16 (length);
|
||
if (!((skb->len + sizeof *trailer) & 0x01))
|
||
*skb_put (skb, 1) = PAD_BYTE;
|
||
trailer = (struct nc_trailer *) skb_put (skb, sizeof *trailer);
|
||
}
|
||
#endif /* CONFIG_USB_NET1080 */
|
||
|
||
usb_fill_bulk_urb (urb, dev->udev, dev->out,
|
||
skb->data, skb->len, tx_complete, skb);
|
||
urb->transfer_flags |= URB_ASYNC_UNLINK;
|
||
|
||
/* don't assume the hardware handles USB_ZERO_PACKET
|
||
* NOTE: strictly conforming cdc-ether devices should expect
|
||
* the ZLP here, but ignore the one-byte packet.
|
||
*
|
||
* FIXME zero that byte, if it doesn't require a new skb.
|
||
*/
|
||
if ((length % dev->maxpacket) == 0)
|
||
urb->transfer_buffer_length++;
|
||
|
||
spin_lock_irqsave (&dev->txq.lock, flags);
|
||
|
||
#ifdef CONFIG_USB_NET1080
|
||
if (info->flags & FLAG_FRAMING_NC) {
|
||
header->packet_id = cpu_to_le16 ((u16)dev->dev_packet_id++);
|
||
put_unaligned (header->packet_id, &trailer->packet_id);
|
||
#if 0
|
||
devdbg (dev, "frame >tx h %d p %d id %d",
|
||
header->hdr_len, header->packet_len,
|
||
header->packet_id);
|
||
#endif
|
||
}
|
||
#endif /* CONFIG_USB_NET1080 */
|
||
|
||
switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) {
|
||
case -EPIPE:
|
||
netif_stop_queue (net);
|
||
defer_kevent (dev, EVENT_TX_HALT);
|
||
break;
|
||
default:
|
||
if (netif_msg_tx_err (dev))
|
||
devdbg (dev, "tx: submit urb err %d", retval);
|
||
break;
|
||
case 0:
|
||
net->trans_start = jiffies;
|
||
__skb_queue_tail (&dev->txq, skb);
|
||
if (dev->txq.qlen >= TX_QLEN (dev))
|
||
netif_stop_queue (net);
|
||
}
|
||
spin_unlock_irqrestore (&dev->txq.lock, flags);
|
||
|
||
if (retval) {
|
||
if (netif_msg_tx_err (dev))
|
||
devdbg (dev, "drop, code %d", retval);
|
||
drop:
|
||
retval = NET_XMIT_SUCCESS;
|
||
dev->stats.tx_dropped++;
|
||
if (skb)
|
||
dev_kfree_skb_any (skb);
|
||
usb_free_urb (urb);
|
||
} else if (netif_msg_tx_queued (dev)) {
|
||
devdbg (dev, "> tx, len %d, type 0x%x",
|
||
length, skb->protocol);
|
||
}
|
||
return retval;
|
||
}
|
||
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
// tasklet (work deferred from completions, in_irq) or timer
|
||
|
||
static void usbnet_bh (unsigned long param)
|
||
{
|
||
struct usbnet *dev = (struct usbnet *) param;
|
||
struct sk_buff *skb;
|
||
struct skb_data *entry;
|
||
|
||
while ((skb = skb_dequeue (&dev->done))) {
|
||
entry = (struct skb_data *) skb->cb;
|
||
switch (entry->state) {
|
||
case rx_done:
|
||
entry->state = rx_cleanup;
|
||
rx_process (dev, skb);
|
||
continue;
|
||
case tx_done:
|
||
case rx_cleanup:
|
||
usb_free_urb (entry->urb);
|
||
dev_kfree_skb (skb);
|
||
continue;
|
||
default:
|
||
devdbg (dev, "bogus skb state %d", entry->state);
|
||
}
|
||
}
|
||
|
||
// waiting for all pending urbs to complete?
|
||
if (dev->wait) {
|
||
if ((dev->txq.qlen + dev->rxq.qlen + dev->done.qlen) == 0) {
|
||
wake_up (dev->wait);
|
||
}
|
||
|
||
// or are we maybe short a few urbs?
|
||
} else if (netif_running (dev->net)
|
||
&& netif_device_present (dev->net)
|
||
&& !timer_pending (&dev->delay)
|
||
&& !test_bit (EVENT_RX_HALT, &dev->flags)) {
|
||
int temp = dev->rxq.qlen;
|
||
int qlen = RX_QLEN (dev);
|
||
|
||
if (temp < qlen) {
|
||
struct urb *urb;
|
||
int i;
|
||
|
||
// don't refill the queue all at once
|
||
for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) {
|
||
urb = usb_alloc_urb (0, GFP_ATOMIC);
|
||
if (urb != NULL)
|
||
rx_submit (dev, urb, GFP_ATOMIC);
|
||
}
|
||
if (temp != dev->rxq.qlen && netif_msg_link (dev))
|
||
devdbg (dev, "rxqlen %d --> %d",
|
||
temp, dev->rxq.qlen);
|
||
if (dev->rxq.qlen < qlen)
|
||
tasklet_schedule (&dev->bh);
|
||
}
|
||
if (dev->txq.qlen < TX_QLEN (dev))
|
||
netif_wake_queue (dev->net);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/*-------------------------------------------------------------------------
|
||
*
|
||
* USB Device Driver support
|
||
*
|
||
*-------------------------------------------------------------------------*/
|
||
|
||
// precondition: never called in_interrupt
|
||
|
||
static void usbnet_disconnect (struct usb_interface *intf)
|
||
{
|
||
struct usbnet *dev;
|
||
struct usb_device *xdev;
|
||
struct net_device *net;
|
||
|
||
dev = usb_get_intfdata(intf);
|
||
usb_set_intfdata(intf, NULL);
|
||
if (!dev)
|
||
return;
|
||
|
||
xdev = interface_to_usbdev (intf);
|
||
|
||
if (netif_msg_probe (dev))
|
||
devinfo (dev, "unregister usbnet usb-%s-%s, %s",
|
||
xdev->bus->bus_name, xdev->devpath,
|
||
dev->driver_info->description);
|
||
|
||
net = dev->net;
|
||
unregister_netdev (net);
|
||
|
||
/* we don't hold rtnl here ... */
|
||
flush_scheduled_work ();
|
||
|
||
if (dev->driver_info->unbind)
|
||
dev->driver_info->unbind (dev, intf);
|
||
|
||
free_netdev(net);
|
||
usb_put_dev (xdev);
|
||
}
|
||
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static struct ethtool_ops usbnet_ethtool_ops;
|
||
|
||
// precondition: never called in_interrupt
|
||
|
||
static int
|
||
usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
|
||
{
|
||
struct usbnet *dev;
|
||
struct net_device *net;
|
||
struct usb_host_interface *interface;
|
||
struct driver_info *info;
|
||
struct usb_device *xdev;
|
||
int status;
|
||
|
||
info = (struct driver_info *) prod->driver_info;
|
||
if (!info) {
|
||
dev_dbg (&udev->dev, "blacklisted by %s\n", driver_name);
|
||
return -ENODEV;
|
||
}
|
||
xdev = interface_to_usbdev (udev);
|
||
interface = udev->cur_altsetting;
|
||
|
||
usb_get_dev (xdev);
|
||
|
||
status = -ENOMEM;
|
||
|
||
// set up our own records
|
||
net = alloc_etherdev(sizeof(*dev));
|
||
if (!net) {
|
||
dbg ("can't kmalloc dev");
|
||
goto out;
|
||
}
|
||
|
||
dev = netdev_priv(net);
|
||
dev->udev = xdev;
|
||
dev->driver_info = info;
|
||
dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
|
||
| NETIF_MSG_PROBE | NETIF_MSG_LINK);
|
||
skb_queue_head_init (&dev->rxq);
|
||
skb_queue_head_init (&dev->txq);
|
||
skb_queue_head_init (&dev->done);
|
||
dev->bh.func = usbnet_bh;
|
||
dev->bh.data = (unsigned long) dev;
|
||
INIT_WORK (&dev->kevent, kevent, dev);
|
||
dev->delay.function = usbnet_bh;
|
||
dev->delay.data = (unsigned long) dev;
|
||
init_timer (&dev->delay);
|
||
|
||
SET_MODULE_OWNER (net);
|
||
dev->net = net;
|
||
strcpy (net->name, "usb%d");
|
||
memcpy (net->dev_addr, node_id, sizeof node_id);
|
||
|
||
#if 0
|
||
// dma_supported() is deeply broken on almost all architectures
|
||
// possible with some EHCI controllers
|
||
if (dma_supported (&udev->dev, DMA_64BIT_MASK))
|
||
net->features |= NETIF_F_HIGHDMA;
|
||
#endif
|
||
|
||
net->change_mtu = usbnet_change_mtu;
|
||
net->get_stats = usbnet_get_stats;
|
||
net->hard_start_xmit = usbnet_start_xmit;
|
||
net->open = usbnet_open;
|
||
net->stop = usbnet_stop;
|
||
net->watchdog_timeo = TX_TIMEOUT_JIFFIES;
|
||
net->tx_timeout = usbnet_tx_timeout;
|
||
net->do_ioctl = usbnet_ioctl;
|
||
net->ethtool_ops = &usbnet_ethtool_ops;
|
||
|
||
// allow device-specific bind/init procedures
|
||
// NOTE net->name still not usable ...
|
||
if (info->bind) {
|
||
status = info->bind (dev, udev);
|
||
// heuristic: "usb%d" for links we know are two-host,
|
||
// else "eth%d" when there's reasonable doubt. userspace
|
||
// can rename the link if it knows better.
|
||
if ((dev->driver_info->flags & FLAG_ETHER) != 0
|
||
&& (net->dev_addr [0] & 0x02) == 0)
|
||
strcpy (net->name, "eth%d");
|
||
} else if (!info->in || info->out)
|
||
status = get_endpoints (dev, udev);
|
||
else {
|
||
dev->in = usb_rcvbulkpipe (xdev, info->in);
|
||
dev->out = usb_sndbulkpipe (xdev, info->out);
|
||
if (!(info->flags & FLAG_NO_SETINT))
|
||
status = usb_set_interface (xdev,
|
||
interface->desc.bInterfaceNumber,
|
||
interface->desc.bAlternateSetting);
|
||
else
|
||
status = 0;
|
||
|
||
}
|
||
|
||
if (status == 0 && dev->status)
|
||
status = init_status (dev, udev);
|
||
if (status < 0)
|
||
goto out1;
|
||
|
||
dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
|
||
|
||
SET_NETDEV_DEV(net, &udev->dev);
|
||
status = register_netdev (net);
|
||
if (status)
|
||
goto out3;
|
||
if (netif_msg_probe (dev))
|
||
devinfo (dev, "register usbnet at usb-%s-%s, %s, "
|
||
"%02x:%02x:%02x:%02x:%02x:%02x",
|
||
xdev->bus->bus_name, xdev->devpath,
|
||
dev->driver_info->description,
|
||
net->dev_addr [0], net->dev_addr [1],
|
||
net->dev_addr [2], net->dev_addr [3],
|
||
net->dev_addr [4], net->dev_addr [5]);
|
||
|
||
// ok, it's ready to go.
|
||
usb_set_intfdata (udev, dev);
|
||
|
||
// start as if the link is up
|
||
netif_device_attach (net);
|
||
|
||
return 0;
|
||
|
||
out3:
|
||
if (info->unbind)
|
||
info->unbind (dev, udev);
|
||
out1:
|
||
free_netdev(net);
|
||
out:
|
||
usb_put_dev(xdev);
|
||
return status;
|
||
}
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
#ifdef CONFIG_PM
|
||
|
||
static int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
|
||
{
|
||
struct usbnet *dev = usb_get_intfdata(intf);
|
||
|
||
/* accelerate emptying of the rx and queues, to avoid
|
||
* having everything error out.
|
||
*/
|
||
netif_device_detach (dev->net);
|
||
(void) unlink_urbs (dev, &dev->rxq);
|
||
(void) unlink_urbs (dev, &dev->txq);
|
||
intf->dev.power.power_state = PMSG_SUSPEND;
|
||
return 0;
|
||
}
|
||
|
||
static int usbnet_resume (struct usb_interface *intf)
|
||
{
|
||
struct usbnet *dev = usb_get_intfdata(intf);
|
||
|
||
intf->dev.power.power_state = PMSG_ON;
|
||
netif_device_attach (dev->net);
|
||
tasklet_schedule (&dev->bh);
|
||
return 0;
|
||
}
|
||
|
||
#else /* !CONFIG_PM */
|
||
|
||
#define usbnet_suspend NULL
|
||
#define usbnet_resume NULL
|
||
|
||
#endif /* CONFIG_PM */
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
#ifndef HAVE_HARDWARE
|
||
#error You need to configure some hardware for this driver
|
||
#endif
|
||
|
||
/*
|
||
* chip vendor names won't normally be on the cables, and
|
||
* may not be on the device.
|
||
*/
|
||
|
||
static const struct usb_device_id products [] = {
|
||
|
||
#ifdef CONFIG_USB_ALI_M5632
|
||
{
|
||
USB_DEVICE (0x0402, 0x5632), // ALi defaults
|
||
.driver_info = (unsigned long) &ali_m5632_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_AN2720
|
||
{
|
||
USB_DEVICE (0x0547, 0x2720), // AnchorChips defaults
|
||
.driver_info = (unsigned long) &an2720_info,
|
||
}, {
|
||
USB_DEVICE (0x0547, 0x2727), // Xircom PGUNET
|
||
.driver_info = (unsigned long) &an2720_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_BELKIN
|
||
{
|
||
USB_DEVICE (0x050d, 0x0004), // Belkin
|
||
.driver_info = (unsigned long) &belkin_info,
|
||
}, {
|
||
USB_DEVICE (0x056c, 0x8100), // eTEK
|
||
.driver_info = (unsigned long) &belkin_info,
|
||
}, {
|
||
USB_DEVICE (0x0525, 0x9901), // Advance USBNET (eTEK)
|
||
.driver_info = (unsigned long) &belkin_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_AX8817X
|
||
{
|
||
// Linksys USB200M
|
||
USB_DEVICE (0x077b, 0x2226),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// Netgear FA120
|
||
USB_DEVICE (0x0846, 0x1040),
|
||
.driver_info = (unsigned long) &netgear_fa120_info,
|
||
}, {
|
||
// DLink DUB-E100
|
||
USB_DEVICE (0x2001, 0x1a00),
|
||
.driver_info = (unsigned long) &dlink_dub_e100_info,
|
||
}, {
|
||
// Intellinet, ST Lab USB Ethernet
|
||
USB_DEVICE (0x0b95, 0x1720),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// Hawking UF200, TrendNet TU2-ET100
|
||
USB_DEVICE (0x07b8, 0x420a),
|
||
.driver_info = (unsigned long) &hawking_uf200_info,
|
||
}, {
|
||
// Billionton Systems, USB2AR
|
||
USB_DEVICE (0x08dd, 0x90ff),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// ATEN UC210T
|
||
USB_DEVICE (0x0557, 0x2009),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// Buffalo LUA-U2-KTX
|
||
USB_DEVICE (0x0411, 0x003d),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
|
||
USB_DEVICE (0x6189, 0x182d),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// corega FEther USB2-TX
|
||
USB_DEVICE (0x07aa, 0x0017),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// Surecom EP-1427X-2
|
||
USB_DEVICE (0x1189, 0x0893),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// goodway corp usb gwusb2e
|
||
USB_DEVICE (0x1631, 0x6200),
|
||
.driver_info = (unsigned long) &ax8817x_info,
|
||
}, {
|
||
// ASIX AX88772 10/100
|
||
USB_DEVICE (0x0b95, 0x7720),
|
||
.driver_info = (unsigned long) &ax88772_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_EPSON2888
|
||
{
|
||
USB_DEVICE (0x0525, 0x2888), // EPSON USB client
|
||
.driver_info = (unsigned long) &epson2888_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_GENESYS
|
||
{
|
||
USB_DEVICE (0x05e3, 0x0502), // GL620USB-A
|
||
.driver_info = (unsigned long) &genelink_info,
|
||
},
|
||
/* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB
|
||
* that's half duplex, not currently supported
|
||
*/
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_NET1080
|
||
{
|
||
USB_DEVICE (0x0525, 0x1080), // NetChip ref design
|
||
.driver_info = (unsigned long) &net1080_info,
|
||
}, {
|
||
USB_DEVICE (0x06D0, 0x0622), // Laplink Gold
|
||
.driver_info = (unsigned long) &net1080_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_PL2301
|
||
{
|
||
USB_DEVICE (0x067b, 0x0000), // PL-2301
|
||
.driver_info = (unsigned long) &prolific_info,
|
||
}, {
|
||
USB_DEVICE (0x067b, 0x0001), // PL-2302
|
||
.driver_info = (unsigned long) &prolific_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_KC2190
|
||
{
|
||
USB_DEVICE (0x050f, 0x0190), // KC-190
|
||
.driver_info = (unsigned long) &kc2190_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_RNDIS
|
||
{
|
||
/* RNDIS is MSFT's un-official variant of CDC ACM */
|
||
USB_INTERFACE_INFO (USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
|
||
.driver_info = (unsigned long) &rndis_info,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_ARMLINUX
|
||
/*
|
||
* SA-1100 using standard ARM Linux kernels, or compatible.
|
||
* Often used when talking to Linux PDAs (iPaq, Yopy, etc).
|
||
* The sa-1100 "usb-eth" driver handles the basic framing.
|
||
*
|
||
* PXA25x or PXA210 ... these use a "usb-eth" driver much like
|
||
* the sa1100 one, but hardware uses different endpoint numbers.
|
||
*
|
||
* Or the Linux "Ethernet" gadget on hardware that can't talk
|
||
* CDC Ethernet (e.g., no altsettings), in either of two modes:
|
||
* - acting just like the old "usb-eth" firmware, though
|
||
* the implementation is different
|
||
* - supporting RNDIS as the first/default configuration for
|
||
* MS-Windows interop; Linux needs to use the other config
|
||
*/
|
||
{
|
||
// 1183 = 0x049F, both used as hex values?
|
||
// Compaq "Itsy" vendor/product id
|
||
USB_DEVICE (0x049F, 0x505A), // usb-eth, or compatible
|
||
.driver_info = (unsigned long) &linuxdev_info,
|
||
}, {
|
||
USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy"
|
||
.driver_info = (unsigned long) &yopy_info,
|
||
}, {
|
||
USB_DEVICE (0x8086, 0x07d3), // "blob" bootloader
|
||
.driver_info = (unsigned long) &blob_info,
|
||
}, {
|
||
// Linux Ethernet/RNDIS gadget on pxa210/25x/26x
|
||
// e.g. Gumstix, current OpenZaurus, ...
|
||
USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203),
|
||
.driver_info = (unsigned long) &linuxdev_info,
|
||
},
|
||
#endif
|
||
|
||
#if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER)
|
||
/*
|
||
* SA-1100 based Sharp Zaurus ("collie"), or compatible.
|
||
* Same idea as above, but different framing.
|
||
*
|
||
* PXA-2xx based models are also lying-about-cdc.
|
||
* Some models don't even tell the same lies ...
|
||
*
|
||
* NOTE: OpenZaurus versions with 2.6 kernels won't use these entries,
|
||
* unlike the older ones with 2.4 "embedix" kernels.
|
||
*
|
||
* NOTE: These entries do double-duty, serving as blacklist entries
|
||
* whenever Zaurus support isn't enabled, but CDC Ethernet is.
|
||
*/
|
||
#define ZAURUS_MASTER_INTERFACE \
|
||
.bInterfaceClass = USB_CLASS_COMM, \
|
||
.bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
|
||
.bInterfaceProtocol = USB_CDC_PROTO_NONE
|
||
{
|
||
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
|
||
| USB_DEVICE_ID_MATCH_DEVICE,
|
||
.idVendor = 0x04DD,
|
||
.idProduct = 0x8004,
|
||
ZAURUS_MASTER_INTERFACE,
|
||
.driver_info = ZAURUS_STRONGARM_INFO,
|
||
}, {
|
||
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
|
||
| USB_DEVICE_ID_MATCH_DEVICE,
|
||
.idVendor = 0x04DD,
|
||
.idProduct = 0x8005, /* A-300 */
|
||
ZAURUS_MASTER_INTERFACE,
|
||
.driver_info = ZAURUS_PXA_INFO,
|
||
}, {
|
||
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
|
||
| USB_DEVICE_ID_MATCH_DEVICE,
|
||
.idVendor = 0x04DD,
|
||
.idProduct = 0x8006, /* B-500/SL-5600 */
|
||
ZAURUS_MASTER_INTERFACE,
|
||
.driver_info = ZAURUS_PXA_INFO,
|
||
}, {
|
||
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
|
||
| USB_DEVICE_ID_MATCH_DEVICE,
|
||
.idVendor = 0x04DD,
|
||
.idProduct = 0x8007, /* C-700 */
|
||
ZAURUS_MASTER_INTERFACE,
|
||
.driver_info = ZAURUS_PXA_INFO,
|
||
}, {
|
||
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
|
||
| USB_DEVICE_ID_MATCH_DEVICE,
|
||
.idVendor = 0x04DD,
|
||
.idProduct = 0x9031, /* C-750 C-760 */
|
||
ZAURUS_MASTER_INTERFACE,
|
||
.driver_info = ZAURUS_PXA_INFO,
|
||
}, {
|
||
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
|
||
| USB_DEVICE_ID_MATCH_DEVICE,
|
||
.idVendor = 0x04DD,
|
||
.idProduct = 0x9032, /* SL-6000 */
|
||
ZAURUS_MASTER_INTERFACE,
|
||
.driver_info = ZAURUS_PXA_INFO,
|
||
}, {
|
||
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
|
||
| USB_DEVICE_ID_MATCH_DEVICE,
|
||
.idVendor = 0x04DD,
|
||
/* reported with some C860 units */
|
||
.idProduct = 0x9050, /* C-860 */
|
||
ZAURUS_MASTER_INTERFACE,
|
||
.driver_info = ZAURUS_PXA_INFO,
|
||
},
|
||
|
||
#ifdef CONFIG_USB_ZAURUS
|
||
/* At least some (reports vary) PXA units have very different lies
|
||
* about their standards support: they claim to be cell phones with
|
||
* direct access to their radios. (They don't conform to CDC MDLM.)
|
||
*/
|
||
{
|
||
USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
|
||
USB_CDC_PROTO_NONE),
|
||
.driver_info = (unsigned long) &bogus_mdlm_info,
|
||
},
|
||
#endif
|
||
|
||
/* Olympus has some models with a Zaurus-compatible option.
|
||
* R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
|
||
*/
|
||
{
|
||
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
|
||
| USB_DEVICE_ID_MATCH_DEVICE,
|
||
.idVendor = 0x07B4,
|
||
.idProduct = 0x0F02, /* R-1000 */
|
||
ZAURUS_MASTER_INTERFACE,
|
||
.driver_info = OLYMPUS_MXL_INFO,
|
||
},
|
||
#endif
|
||
|
||
#ifdef CONFIG_USB_CDCETHER
|
||
{
|
||
/* CDC Ether uses two interfaces, not necessarily consecutive.
|
||
* We match the main interface, ignoring the optional device
|
||
* class so we could handle devices that aren't exclusively
|
||
* CDC ether.
|
||
*
|
||
* NOTE: this match must come AFTER entries working around
|
||
* bugs/quirks in a given product (like Zaurus, above).
|
||
*/
|
||
USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
|
||
USB_CDC_PROTO_NONE),
|
||
.driver_info = (unsigned long) &cdc_info,
|
||
},
|
||
#endif
|
||
|
||
{ }, // END
|
||
};
|
||
MODULE_DEVICE_TABLE (usb, products);
|
||
|
||
static struct usb_driver usbnet_driver = {
|
||
.owner = THIS_MODULE,
|
||
.name = driver_name,
|
||
.id_table = products,
|
||
.probe = usbnet_probe,
|
||
.disconnect = usbnet_disconnect,
|
||
.suspend = usbnet_suspend,
|
||
.resume = usbnet_resume,
|
||
};
|
||
|
||
/* Default ethtool_ops assigned. Devices can override in their bind() routine */
|
||
static struct ethtool_ops usbnet_ethtool_ops = {
|
||
.get_drvinfo = usbnet_get_drvinfo,
|
||
.get_link = usbnet_get_link,
|
||
.get_msglevel = usbnet_get_msglevel,
|
||
.set_msglevel = usbnet_set_msglevel,
|
||
};
|
||
|
||
/*-------------------------------------------------------------------------*/
|
||
|
||
static int __init usbnet_init (void)
|
||
{
|
||
// compiler should optimize these out
|
||
BUG_ON (sizeof (((struct sk_buff *)0)->cb)
|
||
< sizeof (struct skb_data));
|
||
#ifdef CONFIG_USB_CDCETHER
|
||
BUG_ON ((sizeof (((struct usbnet *)0)->data)
|
||
< sizeof (struct cdc_state)));
|
||
#endif
|
||
|
||
random_ether_addr(node_id);
|
||
|
||
return usb_register(&usbnet_driver);
|
||
}
|
||
module_init (usbnet_init);
|
||
|
||
static void __exit usbnet_exit (void)
|
||
{
|
||
usb_deregister (&usbnet_driver);
|
||
}
|
||
module_exit (usbnet_exit);
|
||
|
||
MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>");
|
||
MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)");
|
||
MODULE_LICENSE ("GPL");
|