[PATCH] USB: usbnet (9/9) module for pl2301/2302 cables (090ffa9d) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/usb/net/Kconfig

+10 −15

Original line number	Diff line number	Diff line
		@@ -125,20 +125,6 @@ config USB_USBNET
		To compile this driver as a module, choose M here: the
		module will be called usbnet.

		comment "USB Host-to-Host Cables"
		depends on USB_USBNET

		config USB_PL2301
		boolean "Prolific PL-2301/2302 based cables"
		default y
		# handshake/init/reset problems, from original 'plusb' driver
		depends on USB_USBNET && EXPERIMENTAL
		help
		Choose this option if you're using a host-to-host cable
		with one of these chips.

		comment "Drivers built using the usbnet core"

		config USB_NET_AX8817X
		tristate "ASIX AX88xxx Based USB 2.0 Ethernet Adapters"
		depends on USB_USBNET && NET_ETHERNET
		@@ -212,6 +198,15 @@ config USB_NET_NET1080
		on this design: one NetChip 1080 chip and supporting logic,
		optionally with LEDs that indicate traffic

		config USB_NET_PLUSB
		tristate "Prolific PL-2301/2302 based cables"
		# if the handshake/init/reset problems, from original 'plusb',
		# are ever resolved ... then remove "experimental"
		depends on USB_USBNET && EXPERIMENTAL
		help
		Choose this option if you're using a host-to-host cable
		with one of these chips.

		config USB_NET_RNDIS_HOST
		tristate "Host for RNDIS devices (EXPERIMENTAL)"
		depends on USB_USBNET && EXPERIMENTAL

drivers/usb/net/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -10,6 +10,7 @@ obj-$(CONFIG_USB_NET_AX8817X) += asix.o
		obj-$(CONFIG_USB_NET_CDCETHER) += cdc_ether.o
		obj-$(CONFIG_USB_NET_GL620A) += gl620a.o
		obj-$(CONFIG_USB_NET_NET1080) += net1080.o
		obj-$(CONFIG_USB_NET_PLUSB) += plusb.o
		obj-$(CONFIG_USB_NET_RNDIS_HOST) += rndis_host.o
		obj-$(CONFIG_USB_NET_CDC_SUBSET) += cdc_subset.o
		obj-$(CONFIG_USB_NET_ZAURUS) += zaurus.o

drivers/usb/net/plusb.c

0 → 100644

+156 −0

Original line number	Diff line number	Diff line
		/*
		* PL-2301/2302 USB host-to-host link cables
		* Copyright (C) 2000-2005 by David Brownell
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/

		// #define DEBUG // error path messages, extra info
		// #define VERBOSE // more; success messages

		#include <linux/config.h>
		#ifdef CONFIG_USB_DEBUG
		# define DEBUG
		#endif
		#include <linux/module.h>
		#include <linux/sched.h>
		#include <linux/init.h>
		#include <linux/netdevice.h>
		#include <linux/etherdevice.h>
		#include <linux/ethtool.h>
		#include <linux/workqueue.h>
		#include <linux/mii.h>
		#include <linux/usb.h>

		#include "usbnet.h"


		/*
		* 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.
		*
		* HEADS UP: this handshaking isn't all that robust. This driver
		* gets confused easily if you unplug one end of the cable then
		* try to connect it again; you'll need to restart both ends. The
		* "naplink" software (used by some PlayStation/2 deveopers) does
		* the handshaking much better! Also, sometimes this hardware
		* seems to get wedged under load. Prolific docs are weak, and
		* don't identify differences between PL2301 and PL2302, much less
		* anything to explain the different PL2302 versions observed.
		*/

		/*
		* 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,
		USB_CTRL_GET_TIMEOUT);
		}

		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,
		};


		/-------------------------------------------------------------------------/

		/*
		* Proilific's name won't normally be on the cables, and
		* may not be on the device.
		*/

		static const struct usb_device_id products [] = {

		{
		USB_DEVICE(0x067b, 0x0000), // PL-2301
		.driver_info = (unsigned long) &prolific_info,
		}, {
		USB_DEVICE(0x067b, 0x0001), // PL-2302
		.driver_info = (unsigned long) &prolific_info,
		},

		{ }, // END
		};
		MODULE_DEVICE_TABLE(usb, products);

		static struct usb_driver plusb_driver = {
		.owner = THIS_MODULE,
		.name = "plusb",
		.id_table = products,
		.probe = usbnet_probe,
		.disconnect = usbnet_disconnect,
		.suspend = usbnet_suspend,
		.resume = usbnet_resume,
		};

		static int __init plusb_init(void)
		{
		return usb_register(&plusb_driver);
		}
		module_init(plusb_init);

		static void __exit plusb_exit(void)
		{
		usb_deregister(&plusb_driver);
		}
		module_exit(plusb_exit);

		MODULE_AUTHOR("David Brownell");
		MODULE_DESCRIPTION("Prolific PL-2301/2302 USB Host to Host Link Driver");
		MODULE_LICENSE("GPL");

drivers/usb/net/usbnet.c

+12 −202

Original line number	Diff line number	Diff line
		/*
		* USB Networking Links
		* USB Network driver infrastructure
		* Copyright (C) 2000-2005 by David Brownell
		* Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
		*
		@@ -20,96 +20,15 @@

		/*
		* This is a generic "USB networking" framework that works with several
		* kinds of full and high speed networking devices:
		* kinds of full and high speed networking devices: host-to-host cables,
		* smart usb peripherals, and actual Ethernet adapters.
		*
		* + USB host-to-host "network cables", used for IP-over-USB links.
		* These are often used for Laplink style connectivity products.
		* - AnchorChip 2720
		* - Belkin, eTEK (interops with Win32 drivers)
		* - GeneSys GL620USB-A
		* - NetChip 1080 (interoperates with NetChip Win32 drivers)
		* - Prolific PL-2301/2302 (replaces "plusb" driver)
		* - KC Technology KC2190
		*
		* + Smart USB devices can support such links directly, using Internet
		* standard protocols instead of proprietary host-to-device links.
		* - Linux PDAs like iPaq, Yopy, and Zaurus
		* - The BLOB boot loader (for diskless booting)
		* - Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers
		* - Devices using EPSON's sample USB firmware
		* - CDC-Ethernet class devices, such as many cable modems
		*
		* + Adapters to networks such as Ethernet.
		* - AX8817X based USB 2.0 products
		*
		* Links to these devices can be bridged using Linux Ethernet bridging.
		* With minor exceptions, these all use similar USB framing for network
		* traffic, but need different protocols for control traffic.
		*
		* USB devices can implement their side of this protocol at the cost
		* of two bulk endpoints; it's not restricted to "cable" applications.
		* See the SA1110, Zaurus, or EPSON device/client support in this driver;
		* slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or
		* "g_ether" (in the Linux "gadget" framework) implement that behavior
		* within devices.
		*
		*
		* CHANGELOG:
		*
		* 13-sep-2000 experimental, new
		* 10-oct-2000 usb_device_id table created.
		* 28-oct-2000 misc fixes; mostly, discard more TTL-mangled rx packets.
		* 01-nov-2000 usb_device_id table and probing api update by
		* Adam J. Richter <adam@yggdrasil.com>.
		* 18-dec-2000 (db) tx watchdog, "net1080" renaming to "usbnet", device_info
		* and prolific support, isolate net1080-specific bits, cleanup.
		* fix unlink_urbs oops in D3 PM resume code path.
		*
		* 02-feb-2001 (db) fix tx skb sharing, packet length, match_flags, ...
		* 08-feb-2001 stubbed in "linuxdev", maybe the SA-1100 folk can use it;
		* AnchorChips 2720 support (from spec) for testing;
		* fix bit-ordering problem with ethernet multicast addr
		* 19-feb-2001 Support for clearing halt conditions. SA1100 UDC support
		* updates. Oleg Drokin (green@iXcelerator.com)
		* 25-mar-2001 More SA-1100 updates, including workaround for ip problem
		* expecting cleared skb->cb and framing change to match latest
		* handhelds.org version (Oleg). Enable device IDs from the
		* Win32 Belkin driver; other cleanups (db).
		* 16-jul-2001 Bugfixes for uhci oops-on-unplug, Belkin support, various
		* cleanups for problems not yet seen in the field. (db)
		* 17-oct-2001 Handle "Advance USBNET" product, like Belkin/eTEK devices,
		* from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>;
		* rx unlinks somehow weren't async; minor cleanup.
		* 03-nov-2001 Merged GeneSys driver; original code from Jiun-Jie Huang
		* <huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec
		* <utx@penguin.cz>. Made framing options (NetChip/GeneSys)
		* tie mostly to (sub)driver info. Workaround some PL-2302
		* chips that seem to reject SET_INTERFACE requests.
		*
		* 06-apr-2002 Added ethtool support, based on a patch from Brad Hards.
		* Level of diagnostics is more configurable; they use device
		* location (usb_device->devpath) instead of address (2.5).
		* For tx_fixup, memflags can't be NOIO.
		* 07-may-2002 Generalize/cleanup keventd support, handling rx stalls (mostly
		* for USB 2.0 TTs) and memory shortages (potential) too. (db)
		* Use "locally assigned" IEEE802 address space. (Brad Hards)
		* 18-oct-2002 Support for Zaurus (Pavel Machek), related cleanup (db).
		* 14-dec-2002 Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix,
		* cleanups and stubbed PXA-250 support (db), fix for framing
		* issues on Z, net1080, and gl620a (Toby Milne)
		*
		* 31-mar-2003 Use endpoint descriptors: high speed support, simpler sa1100
		* vs pxa25x, and CDC Ethernet. Throttle down log floods on
		* disconnect; other cleanups. (db) Flush net1080 fifos
		* after several sequential framing errors. (Johannes Erdfelt)
		* 22-aug-2003 AX8817X support (Dave Hollis).
		*
		* 14-jun-2004 Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan
		* (Neil Bortnak)
		* 03-nov-2004 Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell)
		*
		* 01-feb-2005 AX88772 support (Phil Chang & Dave Hollis)
		-------------------------------------------------------------------------/
		* These devices usually differ in terms of control protocols (if they
		* even have one!) and sometimes they define new framing to wrap or batch
		* Ethernet packets. Otherwise, they talk to USB pretty much the same,
		* so interface (un)binding, endpoint I/O queues, fault handling, and other
		* issues can usefully be addressed by this framework.
		*/

		// #define DEBUG // error path messages, extra info
		// #define VERBOSE // more; success messages
		@@ -301,77 +220,6 @@ void usbnet_skb_return (struct usbnet dev, struct sk_buff skb)
		}
		EXPORT_SYMBOL_GPL(usbnet_skb_return);


		#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,
		USB_CTRL_GET_TIMEOUT);
		}

		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 */


		/*-------------------------------------------------------------------------
		*
		@@ -1354,62 +1202,24 @@ int usbnet_resume (struct usb_interface *intf)
		EXPORT_SYMBOL_GPL(usbnet_resume);


		/-------------------------------------------------------------------------/

		#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_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
		{ }, // 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,
		};

		/-------------------------------------------------------------------------/

		static int __init usbnet_init(void)
		{
		// compiler should optimize these out
		/* compiler should optimize this out */
		BUG_ON (sizeof (((struct sk_buff *)0)->cb)
		< sizeof (struct skb_data));

		random_ether_addr(node_id);

		return usb_register(&usbnet_driver);
		return 0;
		}
		module_init(usbnet_init);

		static void __exit usbnet_exit(void)
		{
		usb_deregister(&usbnet_driver);
		}
		module_exit(usbnet_exit);

		MODULE_AUTHOR("David Brownell");
		MODULE_DESCRIPTION("USB Host-to-Host Link Drivers (numerous vendors)");
		MODULE_DESCRIPTION("USB network driver framework");
		MODULE_LICENSE("GPL");