[PATCH] USB: usbnet (9/9) module for pl2301/2302 cables
This wraps up the conversion of the "usbnet" driver structure, by
moving the Prolific PL-2201/2302 minidriver to a module of its own.
It also includes some minor cleanups to the remaining "usbnet" file,
notably removing that long changelog at the top.
Minor historical note: Linux 2.2 first called the driver for
this hardware "plusb".
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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 @@
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 @@
/*-------------------------------------------------------------------------*/
-#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");