diff options
| -rw-r--r-- | drivers/usb/net/Kconfig | 25 | ||||
| -rw-r--r-- | drivers/usb/net/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/net/plusb.c | 156 | ||||
| -rw-r--r-- | drivers/usb/net/usbnet.c | 214 |
4 files changed, 179 insertions, 217 deletions
diff --git a/drivers/usb/net/Kconfig b/drivers/usb/net/Kconfig index 5f3ae1e..8c010bb 100644 --- a/drivers/usb/net/Kconfig +++ b/drivers/usb/net/Kconfig @@ -99,7 +99,7 @@ config USB_USBNET with "minidrivers" built around a common network driver core that supports deep queues for efficient transfers. (This gives better performance with small packets and at high speeds). - + The USB host runs "usbnet", and the other end of the link might be: - Another USB host, when using USB "network" or "data transfer" @@ -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 diff --git a/drivers/usb/net/Makefile b/drivers/usb/net/Makefile index cb789c3d..222c049 100644 --- a/drivers/usb/net/Makefile +++ b/drivers/usb/net/Makefile @@ -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 diff --git a/drivers/usb/net/plusb.c b/drivers/usb/net/plusb.c new file mode 100644 index 0000000..74c2b35 --- /dev/null +++ b/drivers/usb/net/plusb.c @@ -0,0 +1,156 @@ +/* + * 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"); diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c index 6c78a42..6c46091 100644 --- a/drivers/usb/net/usbnet.c +++ b/drivers/usb/net/usbnet.c @@ -1,5 +1,5 @@ /* - * 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 @@ -302,77 +221,6 @@ 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 */ - - /*------------------------------------------------------------------------- * * Network Device Driver (peer link to "Host Device", from USB host) @@ -1356,60 +1204,22 @@ 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"); |