3 * Copyright (C) 2000-2003 by David Brownell <dbrownell@users.sourceforge.net>
4 * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
5 * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
6 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
7 * Copyright (c) 2002-2003 TiVo Inc.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 * This is a generic "USB networking" framework that works with several
26 * kinds of full and high speed networking devices:
28 * + USB host-to-host "network cables", used for IP-over-USB links.
29 * These are often used for Laplink style connectivity products.
31 * - Belkin, eTEK (interops with Win32 drivers)
32 * - GeneSys GL620USB-A
33 * - NetChip 1080 (interoperates with NetChip Win32 drivers)
34 * - Prolific PL-2301/2302 (replaces "plusb" driver)
35 * - KC Technology KC2190
37 * + Smart USB devices can support such links directly, using Internet
38 * standard protocols instead of proprietary host-to-device links.
39 * - Linux PDAs like iPaq, Yopy, and Zaurus
40 * - The BLOB boot loader (for diskless booting)
41 * - Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers
42 * - Devices using EPSON's sample USB firmware
43 * - CDC-Ethernet class devices, such as many cable modems
45 * + Adapters to networks such as Ethernet.
46 * - AX8817X based USB 2.0 products
48 * Links to these devices can be bridged using Linux Ethernet bridging.
49 * With minor exceptions, these all use similar USB framing for network
50 * traffic, but need different protocols for control traffic.
52 * USB devices can implement their side of this protocol at the cost
53 * of two bulk endpoints; it's not restricted to "cable" applications.
54 * See the SA1110, Zaurus, or EPSON device/client support in this driver;
55 * slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or
56 * "g_ether" (in the Linux "gadget" framework) implement that behavior
62 * 13-sep-2000 experimental, new
63 * 10-oct-2000 usb_device_id table created.
64 * 28-oct-2000 misc fixes; mostly, discard more TTL-mangled rx packets.
65 * 01-nov-2000 usb_device_id table and probing api update by
66 * Adam J. Richter <adam@yggdrasil.com>.
67 * 18-dec-2000 (db) tx watchdog, "net1080" renaming to "usbnet", device_info
68 * and prolific support, isolate net1080-specific bits, cleanup.
69 * fix unlink_urbs oops in D3 PM resume code path.
71 * 02-feb-2001 (db) fix tx skb sharing, packet length, match_flags, ...
72 * 08-feb-2001 stubbed in "linuxdev", maybe the SA-1100 folk can use it;
73 * AnchorChips 2720 support (from spec) for testing;
74 * fix bit-ordering problem with ethernet multicast addr
75 * 19-feb-2001 Support for clearing halt conditions. SA1100 UDC support
76 * updates. Oleg Drokin (green@iXcelerator.com)
77 * 25-mar-2001 More SA-1100 updates, including workaround for ip problem
78 * expecting cleared skb->cb and framing change to match latest
79 * handhelds.org version (Oleg). Enable device IDs from the
80 * Win32 Belkin driver; other cleanups (db).
81 * 16-jul-2001 Bugfixes for uhci oops-on-unplug, Belkin support, various
82 * cleanups for problems not yet seen in the field. (db)
83 * 17-oct-2001 Handle "Advance USBNET" product, like Belkin/eTEK devices,
84 * from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>;
85 * rx unlinks somehow weren't async; minor cleanup.
86 * 03-nov-2001 Merged GeneSys driver; original code from Jiun-Jie Huang
87 * <huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec
88 * <utx@penguin.cz>. Made framing options (NetChip/GeneSys)
89 * tie mostly to (sub)driver info. Workaround some PL-2302
90 * chips that seem to reject SET_INTERFACE requests.
92 * 06-apr-2002 Added ethtool support, based on a patch from Brad Hards.
93 * Level of diagnostics is more configurable; they use device
94 * location (usb_device->devpath) instead of address (2.5).
95 * For tx_fixup, memflags can't be NOIO.
96 * 07-may-2002 Generalize/cleanup keventd support, handling rx stalls (mostly
97 * for USB 2.0 TTs) and memory shortages (potential) too. (db)
98 * Use "locally assigned" IEEE802 address space. (Brad Hards)
99 * 18-oct-2002 Support for Zaurus (Pavel Machek), related cleanup (db).
100 * 14-dec-2002 Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix,
101 * cleanups and stubbed PXA-250 support (db), fix for framing
102 * issues on Z, net1080, and gl620a (Toby Milne)
104 * 31-mar-2003 Use endpoint descriptors: high speed support, simpler sa1100
105 * vs pxa25x, and CDC Ethernet. Throttle down log floods on
106 * disconnect; other cleanups. (db) Flush net1080 fifos
107 * after several sequential framing errors. (Johannes Erdfelt)
108 * 22-aug-2003 AX8817X support (Dave Hollis).
109 * 14-jun-2004 Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan
111 * 03-nov-2004 Trivial patch for KC2190 (KC-190) chip. (Jonathan McDowell)
113 * 01-feb-2005 AX88772 support (Phil Chang & Dave Hollis)
114 *-------------------------------------------------------------------------*/
116 // #define DEBUG // error path messages, extra info
117 // #define VERBOSE // more; success messages
119 #include <linux/config.h>
120 #ifdef CONFIG_USB_DEBUG
123 #include <linux/module.h>
124 #include <linux/kmod.h>
125 #include <linux/sched.h>
126 #include <linux/init.h>
127 #include <linux/netdevice.h>
128 #include <linux/etherdevice.h>
129 #include <linux/random.h>
130 #include <linux/ethtool.h>
131 #include <linux/workqueue.h>
132 #include <linux/mii.h>
133 #include <asm/uaccess.h>
134 #include <asm/unaligned.h>
135 #include <linux/usb.h>
137 #include <asm/scatterlist.h>
138 #include <linux/mm.h>
139 #include <linux/dma-mapping.h>
141 #define DRIVER_VERSION "03-Nov-2004"
144 /*-------------------------------------------------------------------------*/
147 * Nineteen USB 1.1 max size bulk transactions per frame (ms), max.
148 * Several dozen bytes of IPv4 data can fit in two such transactions.
149 * One maximum size Ethernet packet takes twenty four of them.
150 * For high speed, each frame comfortably fits almost 36 max size
151 * Ethernet packets (so queues should be bigger).
153 #define RX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
154 #define TX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
156 // packets are always ethernet inside
157 // ... except they can be bigger (limit of 64K with NetChip framing)
158 #define MIN_PACKET sizeof(struct ethhdr)
159 #define MAX_PACKET 32768
161 // reawaken network queue this soon after stopping; else watchdog barks
162 #define TX_TIMEOUT_JIFFIES (5*HZ)
164 // throttle rx/tx briefly after some faults, so khubd might disconnect()
165 // us (it polls at HZ/4 usually) before we report too many false errors.
166 #define THROTTLE_JIFFIES (HZ/8)
168 // for vendor-specific control operations
169 #define CONTROL_TIMEOUT_MS 500
172 #define UNLINK_TIMEOUT_MS 3
174 /*-------------------------------------------------------------------------*/
176 // randomly generated ethernet address
177 static u8 node_id [ETH_ALEN];
179 // state we keep for each device we handle
182 struct usb_device *udev;
183 struct driver_info *driver_info;
184 wait_queue_head_t *wait;
186 // i/o info: pipes etc
188 struct usb_host_endpoint *status;
190 struct timer_list delay;
192 // protocol/interface state
193 struct net_device *net;
194 struct net_device_stats stats;
196 unsigned long data [5];
198 struct mii_if_info mii;
200 // various kinds of pending driver work
201 struct sk_buff_head rxq;
202 struct sk_buff_head txq;
203 struct sk_buff_head done;
204 struct urb *interrupt;
205 struct tasklet_struct bh;
207 struct work_struct kevent;
209 # define EVENT_TX_HALT 0
210 # define EVENT_RX_HALT 1
211 # define EVENT_RX_MEMORY 2
212 # define EVENT_STS_SPLIT 3
215 // device-specific info used by the driver
220 /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
221 #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
222 #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
223 #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
224 #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
226 #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
227 #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
229 #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
231 /* init device ... can sleep, or cause probe() failure */
232 int (*bind)(struct usbnet *, struct usb_interface *);
234 /* cleanup device ... can sleep, but can't fail */
235 void (*unbind)(struct usbnet *, struct usb_interface *);
237 /* reset device ... can sleep */
238 int (*reset)(struct usbnet *);
240 /* see if peer is connected ... can sleep */
241 int (*check_connect)(struct usbnet *);
243 /* for status polling */
244 void (*status)(struct usbnet *, struct urb *);
246 /* fixup rx packet (strip framing) */
247 int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
249 /* fixup tx packet (add framing) */
250 struct sk_buff *(*tx_fixup)(struct usbnet *dev,
251 struct sk_buff *skb, int flags);
253 // FIXME -- also an interrupt mechanism
254 // useful for at least PL2301/2302 and GL620USB-A
255 // and CDC use them to report 'is it connected' changes
257 /* for new devices, use the descriptor-reading code instead */
258 int in; /* rx endpoint */
259 int out; /* tx endpoint */
261 unsigned long data; /* Misc driver specific data */
264 // we record the state for each of our queued skbs
268 rx_start, rx_done, rx_cleanup
271 struct skb_data { // skb->cb is one of these
274 enum skb_state state;
278 static const char driver_name [] = "usbnet";
280 /* use ethtool to change the level for any given device */
281 static int msg_level = -1;
282 module_param (msg_level, int, 0);
283 MODULE_PARM_DESC (msg_level, "Override default message level");
287 #define devdbg(usbnet, fmt, arg...) \
288 printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
290 #define devdbg(usbnet, fmt, arg...) do {} while(0)
293 #define deverr(usbnet, fmt, arg...) \
294 printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
295 #define devwarn(usbnet, fmt, arg...) \
296 printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
298 #define devinfo(usbnet, fmt, arg...) \
299 printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
301 /*-------------------------------------------------------------------------*/
303 static void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
304 static u32 usbnet_get_link (struct net_device *);
305 static u32 usbnet_get_msglevel (struct net_device *);
306 static void usbnet_set_msglevel (struct net_device *, u32);
308 /* mostly for PDA style devices, which are always connected if present */
309 static int always_connected (struct usbnet *dev)
314 /* handles CDC Ethernet and many other network "bulk data" interfaces */
316 get_endpoints (struct usbnet *dev, struct usb_interface *intf)
319 struct usb_host_interface *alt = NULL;
320 struct usb_host_endpoint *in = NULL, *out = NULL;
321 struct usb_host_endpoint *status = NULL;
323 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
326 in = out = status = NULL;
327 alt = intf->altsetting + tmp;
329 /* take the first altsetting with in-bulk + out-bulk;
330 * remember any status endpoint, just in case;
331 * ignore other endpoints and altsetttings.
333 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
334 struct usb_host_endpoint *e;
337 e = alt->endpoint + ep;
338 switch (e->desc.bmAttributes) {
339 case USB_ENDPOINT_XFER_INT:
340 if (!(e->desc.bEndpointAddress & USB_DIR_IN))
344 case USB_ENDPOINT_XFER_BULK:
349 if (e->desc.bEndpointAddress & USB_DIR_IN) {
352 else if (intr && !status)
362 if (!alt || !in || !out)
365 if (alt->desc.bAlternateSetting != 0
366 || !(dev->driver_info->flags & FLAG_NO_SETINT)) {
367 tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber,
368 alt->desc.bAlternateSetting);
373 dev->in = usb_rcvbulkpipe (dev->udev,
374 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
375 dev->out = usb_sndbulkpipe (dev->udev,
376 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
377 dev->status = status;
381 static void intr_complete (struct urb *urb, struct pt_regs *regs);
383 static int init_status (struct usbnet *dev, struct usb_interface *intf)
390 if (!dev->driver_info->status)
393 pipe = usb_rcvintpipe (dev->udev,
394 dev->status->desc.bEndpointAddress
395 & USB_ENDPOINT_NUMBER_MASK);
396 maxp = usb_maxpacket (dev->udev, pipe, 0);
398 /* avoid 1 msec chatter: min 8 msec poll rate */
399 period = max ((int) dev->status->desc.bInterval,
400 (dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3);
402 buf = kmalloc (maxp, SLAB_KERNEL);
404 dev->interrupt = usb_alloc_urb (0, SLAB_KERNEL);
405 if (!dev->interrupt) {
409 usb_fill_int_urb(dev->interrupt, dev->udev, pipe,
410 buf, maxp, intr_complete, dev, period);
412 "status ep%din, %d bytes period %d\n",
413 usb_pipeendpoint(pipe), maxp, period);
419 static void skb_return (struct usbnet *dev, struct sk_buff *skb)
424 skb->protocol = eth_type_trans (skb, dev->net);
425 dev->stats.rx_packets++;
426 dev->stats.rx_bytes += skb->len;
428 if (netif_msg_rx_status (dev))
429 devdbg (dev, "< rx, len %d, type 0x%x",
430 skb->len + sizeof (struct ethhdr), skb->protocol);
431 memset (skb->cb, 0, sizeof (struct skb_data));
432 status = netif_rx (skb);
433 if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev))
434 devdbg (dev, "netif_rx status %d", status);
438 #ifdef CONFIG_USB_ALI_M5632
439 #define HAVE_HARDWARE
441 /*-------------------------------------------------------------------------
443 * ALi M5632 driver ... does high speed
445 *-------------------------------------------------------------------------*/
447 static const struct driver_info ali_m5632_info = {
448 .description = "ALi M5632",
455 #ifdef CONFIG_USB_AN2720
456 #define HAVE_HARDWARE
458 /*-------------------------------------------------------------------------
460 * AnchorChips 2720 driver ... http://www.cypress.com
462 * This doesn't seem to have a way to detect whether the peer is
463 * connected, or need any reset handshaking. It's got pretty big
464 * internal buffers (handles most of a frame's worth of data).
465 * Chip data sheets don't describe any vendor control messages.
467 *-------------------------------------------------------------------------*/
469 static const struct driver_info an2720_info = {
470 .description = "AnchorChips/Cypress 2720",
471 // no reset available!
472 // no check_connect available!
474 .in = 2, .out = 2, // direction distinguishes these
477 #endif /* CONFIG_USB_AN2720 */
480 #ifdef CONFIG_USB_AX8817X
481 /* ASIX AX8817X based USB 2.0 Ethernet Devices */
483 #define HAVE_HARDWARE
486 #include <linux/crc32.h>
488 #define AX_CMD_SET_SW_MII 0x06
489 #define AX_CMD_READ_MII_REG 0x07
490 #define AX_CMD_WRITE_MII_REG 0x08
491 #define AX_CMD_SET_HW_MII 0x0a
492 #define AX_CMD_READ_EEPROM 0x0b
493 #define AX_CMD_WRITE_EEPROM 0x0c
494 #define AX_CMD_WRITE_ENABLE 0x0d
495 #define AX_CMD_WRITE_DISABLE 0x0e
496 #define AX_CMD_WRITE_RX_CTL 0x10
497 #define AX_CMD_READ_IPG012 0x11
498 #define AX_CMD_WRITE_IPG0 0x12
499 #define AX_CMD_WRITE_IPG1 0x13
500 #define AX_CMD_WRITE_IPG2 0x14
501 #define AX_CMD_WRITE_MULTI_FILTER 0x16
502 #define AX_CMD_READ_NODE_ID 0x17
503 #define AX_CMD_READ_PHY_ID 0x19
504 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b
505 #define AX_CMD_READ_MONITOR_MODE 0x1c
506 #define AX_CMD_WRITE_MONITOR_MODE 0x1d
507 #define AX_CMD_WRITE_GPIOS 0x1f
508 #define AX_CMD_SW_RESET 0x20
509 #define AX_CMD_SW_PHY_STATUS 0x21
510 #define AX_CMD_SW_PHY_SELECT 0x22
511 #define AX88772_CMD_READ_NODE_ID 0x13
513 #define AX_MONITOR_MODE 0x01
514 #define AX_MONITOR_LINK 0x02
515 #define AX_MONITOR_MAGIC 0x04
516 #define AX_MONITOR_HSFS 0x10
518 #define AX_MCAST_FILTER_SIZE 8
519 #define AX_MAX_MCAST 64
521 #define AX_INTERRUPT_BUFSIZE 8
523 #define AX_EEPROM_LEN 0x40
525 #define AX_SWRESET_CLEAR 0x00
526 #define AX_SWRESET_RR 0x01
527 #define AX_SWRESET_RT 0x02
528 #define AX_SWRESET_PRTE 0x04
529 #define AX_SWRESET_PRL 0x08
530 #define AX_SWRESET_BZ 0x10
531 #define AX_SWRESET_IPRL 0x20
532 #define AX_SWRESET_IPPD 0x40
534 #define AX88772_IPG0_DEFAULT 0x15
535 #define AX88772_IPG1_DEFAULT 0x0c
536 #define AX88772_IPG2_DEFAULT 0x12
538 #define AX_EEPROM_MAGIC 0xdeadbeef
540 /* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
541 struct ax8817x_data {
542 u8 multi_filter[AX_MCAST_FILTER_SIZE];
547 static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
548 u16 size, void *data)
550 return usb_control_msg(
552 usb_rcvctrlpipe(dev->udev, 0),
554 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
562 static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
563 u16 size, void *data)
565 return usb_control_msg(
567 usb_sndctrlpipe(dev->udev, 0),
569 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
577 static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
579 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
582 printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
589 static void ax8817x_interrupt_complete(struct urb *urb, struct pt_regs *regs)
591 struct usbnet *dev = (struct usbnet *)urb->context;
592 struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
595 if (urb->status < 0) {
596 devdbg(dev,"ax8817x_interrupt_complete() failed with %d",
599 link = data->int_buf[2] & 0x01;
600 if (netif_carrier_ok(dev->net) != link) {
602 netif_carrier_on(dev->net);
604 netif_carrier_off(dev->net);
605 devdbg(dev, "ax8817x - Link Status is: %d", link);
607 usb_submit_urb(data->int_urb, GFP_ATOMIC);
611 static void ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
612 u16 size, void *data)
614 struct usb_ctrlrequest *req;
618 if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
619 devdbg(dev, "Error allocating URB in write_cmd_async!");
623 if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
624 deverr(dev, "Failed to allocate memory for control request");
629 req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
631 req->wValue = cpu_to_le16(value);
632 req->wIndex = cpu_to_le16(index);
633 req->wLength = cpu_to_le16(size);
635 usb_fill_control_urb(urb, dev->udev,
636 usb_sndctrlpipe(dev->udev, 0),
637 (void *)req, data, size,
638 ax8817x_async_cmd_callback, req);
640 if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
641 deverr(dev, "Error submitting the control message: status=%d", status);
647 static void ax8817x_set_multicast(struct net_device *net)
649 struct usbnet *dev = netdev_priv(net);
650 struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
653 if (net->flags & IFF_PROMISC) {
655 } else if (net->flags & IFF_ALLMULTI
656 || net->mc_count > AX_MAX_MCAST) {
658 } else if (net->mc_count == 0) {
659 /* just broadcast and directed */
661 /* We use the 20 byte dev->data
662 * for our 8 byte filter buffer
663 * to avoid allocating memory that
664 * is tricky to free later */
665 struct dev_mc_list *mc_list = net->mc_list;
669 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
671 /* Build the multicast hash filter. */
672 for (i = 0; i < net->mc_count; i++) {
675 mc_list->dmi_addr) >> 26;
676 data->multi_filter[crc_bits >> 3] |=
678 mc_list = mc_list->next;
681 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
682 AX_MCAST_FILTER_SIZE, data->multi_filter);
687 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
690 static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
692 struct usbnet *dev = netdev_priv(netdev);
696 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
697 ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
698 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
703 static void ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
705 struct usbnet *dev = netdev_priv(netdev);
709 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
710 ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
711 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
714 static void ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
716 struct usbnet *dev = netdev_priv(net);
719 if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
720 wolinfo->supported = 0;
721 wolinfo->wolopts = 0;
724 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
725 wolinfo->wolopts = 0;
726 if (opt & AX_MONITOR_MODE) {
727 if (opt & AX_MONITOR_LINK)
728 wolinfo->wolopts |= WAKE_PHY;
729 if (opt & AX_MONITOR_MAGIC)
730 wolinfo->wolopts |= WAKE_MAGIC;
734 static int ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
736 struct usbnet *dev = netdev_priv(net);
740 if (wolinfo->wolopts & WAKE_PHY)
741 opt |= AX_MONITOR_LINK;
742 if (wolinfo->wolopts & WAKE_MAGIC)
743 opt |= AX_MONITOR_MAGIC;
745 opt |= AX_MONITOR_MODE;
747 if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
748 opt, 0, 0, &buf) < 0)
754 static int ax8817x_get_eeprom_len(struct net_device *net)
756 return AX_EEPROM_LEN;
759 static int ax8817x_get_eeprom(struct net_device *net,
760 struct ethtool_eeprom *eeprom, u8 *data)
762 struct usbnet *dev = netdev_priv(net);
763 u16 *ebuf = (u16 *)data;
766 /* Crude hack to ensure that we don't overwrite memory
767 * if an odd length is supplied
772 eeprom->magic = AX_EEPROM_MAGIC;
774 /* ax8817x returns 2 bytes from eeprom on read */
775 for (i=0; i < eeprom->len / 2; i++) {
776 if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
777 eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
783 static void ax8817x_get_drvinfo (struct net_device *net,
784 struct ethtool_drvinfo *info)
786 /* Inherit standard device info */
787 usbnet_get_drvinfo(net, info);
788 info->eedump_len = 0x3e;
791 static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
793 struct usbnet *dev = netdev_priv(net);
795 return mii_ethtool_gset(&dev->mii,cmd);
798 static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
800 struct usbnet *dev = netdev_priv(net);
802 return mii_ethtool_sset(&dev->mii,cmd);
805 /* We need to override some ethtool_ops so we require our
806 own structure so we don't interfere with other usbnet
807 devices that may be connected at the same time. */
808 static struct ethtool_ops ax8817x_ethtool_ops = {
809 .get_drvinfo = ax8817x_get_drvinfo,
810 .get_link = ethtool_op_get_link,
811 .get_msglevel = usbnet_get_msglevel,
812 .set_msglevel = usbnet_set_msglevel,
813 .get_wol = ax8817x_get_wol,
814 .set_wol = ax8817x_set_wol,
815 .get_eeprom_len = ax8817x_get_eeprom_len,
816 .get_eeprom = ax8817x_get_eeprom,
817 .get_settings = ax8817x_get_settings,
818 .set_settings = ax8817x_set_settings,
821 static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
826 unsigned long gpio_bits = dev->driver_info->data;
827 struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
829 get_endpoints(dev,intf);
831 if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == NULL) {
832 dbg ("%s: cannot allocate interrupt URB",
838 if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
839 dbg ("%s: cannot allocate memory for interrupt buffer",
844 memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
846 usb_fill_int_urb (data->int_urb, dev->udev,
847 usb_rcvintpipe (dev->udev, 1),
848 data->int_buf, AX_INTERRUPT_BUFSIZE,
849 ax8817x_interrupt_complete, dev,
850 dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
852 buf = kmalloc(ETH_ALEN, GFP_KERNEL);
858 /* Toggle the GPIOs in a manufacturer/model specific way */
859 for (i = 2; i >= 0; i--) {
860 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
861 (gpio_bits >> (i * 8)) & 0xff, 0, 0,
867 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0, buf)) < 0) {
868 dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
872 /* Get the MAC address */
873 memset(buf, 0, ETH_ALEN);
874 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) < 0) {
875 dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
878 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
881 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
882 dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
884 } else if (ret < 2) {
885 /* this should always return 2 bytes */
886 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret);
891 /* Initialize MII structure */
892 dev->mii.dev = dev->net;
893 dev->mii.mdio_read = ax8817x_mdio_read;
894 dev->mii.mdio_write = ax8817x_mdio_write;
895 dev->mii.phy_id_mask = 0x3f;
896 dev->mii.reg_num_mask = 0x1f;
897 dev->mii.phy_id = *((u8 *)buf + 1);
899 dev->net->set_multicast_list = ax8817x_set_multicast;
900 dev->net->ethtool_ops = &ax8817x_ethtool_ops;
902 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
903 cpu_to_le16(BMCR_RESET));
904 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
905 cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA | 0x0400));
906 mii_nway_restart(&dev->mii);
908 if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
909 dbg("Failed to submit interrupt URB: %02x", ret);
917 kfree(data->int_buf);
919 usb_free_urb(data->int_urb);
923 static void ax8817x_unbind(struct usbnet *dev, struct usb_interface *intf)
925 struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
927 usb_kill_urb(data->int_urb);
928 usb_free_urb(data->int_urb);
929 kfree(data->int_buf);
932 static struct ethtool_ops ax88772_ethtool_ops = {
933 .get_drvinfo = ax8817x_get_drvinfo,
934 .get_link = ethtool_op_get_link,
935 .get_msglevel = usbnet_get_msglevel,
936 .set_msglevel = usbnet_set_msglevel,
937 .get_wol = ax8817x_get_wol,
938 .set_wol = ax8817x_set_wol,
939 .get_eeprom_len = ax8817x_get_eeprom_len,
940 .get_eeprom = ax8817x_get_eeprom,
941 .get_settings = ax8817x_get_settings,
942 .set_settings = ax8817x_set_settings,
945 static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
949 struct ax8817x_data *data = (struct ax8817x_data *)dev->data;
951 get_endpoints(dev,intf);
953 if ((data->int_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
954 dbg ("Cannot allocate interrupt URB");
959 if ((data->int_buf = kmalloc(AX_INTERRUPT_BUFSIZE, GFP_KERNEL)) == NULL) {
960 dbg ("Cannot allocate memory for interrupt buffer");
964 memset(data->int_buf, 0, AX_INTERRUPT_BUFSIZE);
966 usb_fill_int_urb (data->int_urb, dev->udev,
967 usb_rcvintpipe (dev->udev, 1),
968 data->int_buf, AX_INTERRUPT_BUFSIZE,
969 ax8817x_interrupt_complete, dev,
970 dev->udev->speed == USB_SPEED_HIGH ? 8 : 100);
972 buf = kmalloc(6, GFP_KERNEL);
974 dbg ("Cannot allocate memory for buffer");
979 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
980 0x00B0, 0, 0, buf)) < 0)
984 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0, buf)) < 0) {
985 dbg("Select PHY #1 failed: %d", ret);
990 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0, buf)) < 0) {
991 dbg("Failed to power down internal PHY: %d", ret);
997 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0, buf)) < 0) {
998 dbg("Failed to perform software reset: %d", ret);
1004 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
1005 dbg("Failed to set Internal/External PHY reset control: %d", ret);
1011 ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0,
1013 dbg("Failed to reset RX_CTL: %d", ret);
1017 /* Get the MAC address */
1018 memset(buf, 0, ETH_ALEN);
1019 if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf)) < 0) {
1020 dbg("Failed to read MAC address: %d", ret);
1023 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
1025 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) < 0) {
1026 dbg("Enabling software MII failed: %d", ret);
1031 ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) < 0)
1032 || (*((u16 *)buf) != 0x003b)) {
1033 dbg("Read PHY register 2 must be 0x3b00: %d", ret);
1037 /* Initialize MII structure */
1038 dev->mii.dev = dev->net;
1039 dev->mii.mdio_read = ax8817x_mdio_read;
1040 dev->mii.mdio_write = ax8817x_mdio_write;
1041 dev->mii.phy_id_mask = 0xff;
1042 dev->mii.reg_num_mask = 0xff;
1044 /* Get the PHY id */
1045 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
1046 dbg("Error reading PHY ID: %02x", ret);
1048 } else if (ret < 2) {
1049 /* this should always return 2 bytes */
1050 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
1055 dev->mii.phy_id = *((u8 *)buf + 1);
1058 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0, buf)) < 0) {
1059 dbg("Set external PHY reset pin level: %d", ret);
1064 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
1065 dbg("Set Internal/External PHY reset control: %d", ret);
1071 dev->net->set_multicast_list = ax8817x_set_multicast;
1072 dev->net->ethtool_ops = &ax88772_ethtool_ops;
1074 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
1075 cpu_to_le16(BMCR_RESET));
1076 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
1077 cpu_to_le16(ADVERTISE_ALL | ADVERTISE_CSMA));
1078 mii_nway_restart(&dev->mii);
1080 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, 0x0336, 0, 0, buf)) < 0) {
1081 dbg("Write medium mode register: %d", ret);
1085 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
1086 dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
1090 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
1091 dbg("Failed to set hardware MII: %02x", ret);
1095 /* Set RX_CTL to default values with 2k buffer, and enable cactus */
1097 ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
1099 dbg("Reset RX_CTL failed: %d", ret);
1103 if((ret = usb_submit_urb(data->int_urb, GFP_KERNEL)) < 0) {
1104 dbg("Failed to submit interrupt URB: %02x", ret);
1115 kfree(data->int_buf);
1117 usb_free_urb(data->int_urb);
1122 static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1126 struct sk_buff *ax_skb;
1129 header = (u32 *) skb->data;
1130 le32_to_cpus(header);
1131 packet = (char *)(header + 1);
1135 while (skb->len > 0) {
1136 if ((short)(*header & 0x0000ffff) !=
1137 ~((short)((*header & 0xffff0000) >> 16))) {
1138 devdbg(dev,"header length data is error");
1140 /* get the packet length */
1141 size = (u16) (*header & 0x0000ffff);
1143 if ((skb->len) - ((size + 1) & 0xfffe) == 0)
1145 if (size > ETH_FRAME_LEN) {
1146 devdbg(dev,"invalid rx length %d", size);
1149 ax_skb = skb_clone(skb, GFP_ATOMIC);
1152 ax_skb->data = packet;
1153 ax_skb->tail = packet + size;
1154 skb_return(dev, ax_skb);
1159 skb_pull(skb, (size + 1) & 0xfffe);
1164 header = (u32 *) skb->data;
1165 le32_to_cpus(header);
1166 packet = (char *)(header + 1);
1171 devdbg(dev,"invalid rx length %d", skb->len);
1177 static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
1181 int headroom = skb_headroom(skb);
1182 int tailroom = skb_tailroom(skb);
1186 padlen = ((skb->len + 4) % 512) ? 0 : 4;
1188 if ((!skb_cloned(skb))
1189 && ((headroom + tailroom) >= (4 + padlen))) {
1190 if ((headroom < 4) || (tailroom < padlen)) {
1191 skb->data = memmove(skb->head + 4, skb->data, skb->len);
1192 skb->tail = skb->data + skb->len;
1195 struct sk_buff *skb2;
1196 skb2 = skb_copy_expand(skb, 4, padlen, flags);
1197 dev_kfree_skb_any(skb);
1203 packet_len = (u32 *) skb_push(skb, 4);
1205 packet_len = (u32 *) skb->data;
1206 *packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
1208 if ((skb->len % 512) == 0) {
1209 padbytes_ptr = (u32 *) skb->tail;
1210 *padbytes_ptr = 0xffff0000;
1211 skb_put(skb, padlen);
1216 static const struct driver_info ax8817x_info = {
1217 .description = "ASIX AX8817x USB 2.0 Ethernet",
1218 .bind = ax8817x_bind,
1219 .unbind = ax8817x_unbind,
1220 .flags = FLAG_ETHER,
1224 static const struct driver_info dlink_dub_e100_info = {
1225 .description = "DLink DUB-E100 USB Ethernet",
1226 .bind = ax8817x_bind,
1227 .unbind = ax8817x_unbind,
1228 .flags = FLAG_ETHER,
1232 static const struct driver_info netgear_fa120_info = {
1233 .description = "Netgear FA-120 USB Ethernet",
1234 .bind = ax8817x_bind,
1235 .unbind = ax8817x_unbind,
1236 .flags = FLAG_ETHER,
1240 static const struct driver_info hawking_uf200_info = {
1241 .description = "Hawking UF200 USB Ethernet",
1242 .bind = ax8817x_bind,
1243 .unbind = ax8817x_unbind,
1244 .flags = FLAG_ETHER,
1248 static const struct driver_info ax88772_info = {
1249 .description = "ASIX AX88772 USB 2.0 Ethernet",
1250 .bind = ax88772_bind,
1251 .unbind = ax8817x_unbind,
1252 .flags = FLAG_ETHER | FLAG_FRAMING_AX,
1253 .rx_fixup = ax88772_rx_fixup,
1254 .tx_fixup = ax88772_tx_fixup,
1258 #endif /* CONFIG_USB_AX8817X */
1262 #ifdef CONFIG_USB_BELKIN
1263 #define HAVE_HARDWARE
1265 /*-------------------------------------------------------------------------
1267 * Belkin F5U104 ... two NetChip 2280 devices + Atmel microcontroller
1269 * ... also two eTEK designs, including one sold as "Advance USBNET"
1271 *-------------------------------------------------------------------------*/
1273 static const struct driver_info belkin_info = {
1274 .description = "Belkin, eTEK, or compatible",
1277 #endif /* CONFIG_USB_BELKIN */
1281 /*-------------------------------------------------------------------------
1283 * Communications Device Class declarations.
1284 * Used by CDC Ethernet, and some CDC variants
1286 *-------------------------------------------------------------------------*/
1288 #ifdef CONFIG_USB_CDCETHER
1289 #define NEED_GENERIC_CDC
1292 #ifdef CONFIG_USB_ZAURUS
1293 /* Ethernet variant uses funky framing, broken ethernet addressing */
1294 #define NEED_GENERIC_CDC
1297 #ifdef CONFIG_USB_RNDIS
1298 /* ACM variant uses even funkier framing, complex control RPC scheme */
1299 #define NEED_GENERIC_CDC
1303 #ifdef NEED_GENERIC_CDC
1305 #include <linux/usb_cdc.h>
1308 struct usb_cdc_header_desc *header;
1309 struct usb_cdc_union_desc *u;
1310 struct usb_cdc_ether_desc *ether;
1311 struct usb_interface *control;
1312 struct usb_interface *data;
1315 static struct usb_driver usbnet_driver;
1318 * probes control interface, claims data interface, collects the bulk
1319 * endpoints, activates data interface (if needed), maybe sets MTU.
1320 * all pure cdc, except for certain firmware workarounds.
1322 static int generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf)
1324 u8 *buf = intf->cur_altsetting->extra;
1325 int len = intf->cur_altsetting->extralen;
1326 struct usb_interface_descriptor *d;
1327 struct cdc_state *info = (void *) &dev->data;
1331 if (sizeof dev->data < sizeof *info)
1334 /* expect strict spec conformance for the descriptors, but
1335 * cope with firmware which stores them in the wrong place
1337 if (len == 0 && dev->udev->actconfig->extralen) {
1338 /* Motorola SB4100 (and others: Brad Hards says it's
1339 * from a Broadcom design) put CDC descriptors here
1341 buf = dev->udev->actconfig->extra;
1342 len = dev->udev->actconfig->extralen;
1344 dev_dbg (&intf->dev,
1345 "CDC descriptors on config\n");
1348 /* this assumes that if there's a non-RNDIS vendor variant
1349 * of cdc-acm, it'll fail RNDIS requests cleanly.
1351 rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff);
1353 memset (info, 0, sizeof *info);
1354 info->control = intf;
1356 if (buf [1] != USB_DT_CS_INTERFACE)
1359 /* use bDescriptorSubType to identify the CDC descriptors.
1360 * We expect devices with CDC header and union descriptors.
1361 * For CDC Ethernet we need the ethernet descriptor.
1362 * For RNDIS, ignore two (pointless) CDC modem descriptors
1363 * in favor of a complicated OID-based RPC scheme doing what
1364 * CDC Ethernet achieves with a simple descriptor.
1367 case USB_CDC_HEADER_TYPE:
1369 dev_dbg (&intf->dev, "extra CDC header\n");
1372 info->header = (void *) buf;
1373 if (info->header->bLength != sizeof *info->header) {
1374 dev_dbg (&intf->dev, "CDC header len %u\n",
1375 info->header->bLength);
1379 case USB_CDC_UNION_TYPE:
1381 dev_dbg (&intf->dev, "extra CDC union\n");
1384 info->u = (void *) buf;
1385 if (info->u->bLength != sizeof *info->u) {
1386 dev_dbg (&intf->dev, "CDC union len %u\n",
1391 /* we need a master/control interface (what we're
1392 * probed with) and a slave/data interface; union
1393 * descriptors sort this all out.
1395 info->control = usb_ifnum_to_if(dev->udev,
1396 info->u->bMasterInterface0);
1397 info->data = usb_ifnum_to_if(dev->udev,
1398 info->u->bSlaveInterface0);
1399 if (!info->control || !info->data) {
1400 dev_dbg (&intf->dev,
1401 "master #%u/%p slave #%u/%p\n",
1402 info->u->bMasterInterface0,
1404 info->u->bSlaveInterface0,
1408 if (info->control != intf) {
1409 dev_dbg (&intf->dev, "bogus CDC Union\n");
1410 /* Ambit USB Cable Modem (and maybe others)
1411 * interchanges master and slave interface.
1413 if (info->data == intf) {
1414 info->data = info->control;
1415 info->control = intf;
1420 /* a data interface altsetting does the real i/o */
1421 d = &info->data->cur_altsetting->desc;
1422 if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
1423 dev_dbg (&intf->dev, "slave class %u\n",
1424 d->bInterfaceClass);
1428 case USB_CDC_ETHERNET_TYPE:
1430 dev_dbg (&intf->dev, "extra CDC ether\n");
1433 info->ether = (void *) buf;
1434 if (info->ether->bLength != sizeof *info->ether) {
1435 dev_dbg (&intf->dev, "CDC ether len %u\n",
1439 dev->net->mtu = le16_to_cpup (
1440 &info->ether->wMaxSegmentSize)
1442 /* because of Zaurus, we may be ignoring the host
1443 * side link address we were given.
1448 len -= buf [0]; /* bLength */
1452 if (!info->header || !info->u || (!rndis && !info->ether)) {
1453 dev_dbg (&intf->dev, "missing cdc %s%s%sdescriptor\n",
1454 info->header ? "" : "header ",
1455 info->u ? "" : "union ",
1456 info->ether ? "" : "ether ");
1460 /* claim data interface and set it up ... with side effects.
1461 * network traffic can't flow until an altsetting is enabled.
1463 status = usb_driver_claim_interface (&usbnet_driver, info->data, dev);
1466 status = get_endpoints (dev, info->data);
1468 /* ensure immediate exit from usbnet_disconnect */
1469 usb_set_intfdata(info->data, NULL);
1470 usb_driver_release_interface (&usbnet_driver, info->data);
1474 /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
1476 if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
1477 struct usb_endpoint_descriptor *desc;
1479 dev->status = &info->control->cur_altsetting->endpoint [0];
1480 desc = &dev->status->desc;
1481 if (desc->bmAttributes != USB_ENDPOINT_XFER_INT
1482 || !(desc->bEndpointAddress & USB_DIR_IN)
1483 || (le16_to_cpu(desc->wMaxPacketSize)
1484 < sizeof (struct usb_cdc_notification))
1485 || !desc->bInterval) {
1486 dev_dbg (&intf->dev, "bad notification endpoint\n");
1490 if (rndis && !dev->status) {
1491 dev_dbg (&intf->dev, "missing RNDIS status endpoint\n");
1492 usb_set_intfdata(info->data, NULL);
1493 usb_driver_release_interface (&usbnet_driver, info->data);
1499 dev_info (&dev->udev->dev, "bad CDC descriptors\n");
1503 static void cdc_unbind (struct usbnet *dev, struct usb_interface *intf)
1505 struct cdc_state *info = (void *) &dev->data;
1507 /* disconnect master --> disconnect slave */
1508 if (intf == info->control && info->data) {
1509 /* ensure immediate exit from usbnet_disconnect */
1510 usb_set_intfdata(info->data, NULL);
1511 usb_driver_release_interface (&usbnet_driver, info->data);
1515 /* and vice versa (just in case) */
1516 else if (intf == info->data && info->control) {
1517 /* ensure immediate exit from usbnet_disconnect */
1518 usb_set_intfdata(info->control, NULL);
1519 usb_driver_release_interface (&usbnet_driver, info->control);
1520 info->control = NULL;
1525 static void dumpspeed (struct usbnet *dev, __le32 *speeds)
1527 if (netif_msg_timer (dev))
1528 devinfo (dev, "link speeds: %u kbps up, %u kbps down",
1529 __le32_to_cpu(speeds[0]) / 1000,
1530 __le32_to_cpu(speeds[1]) / 1000);
1533 static void cdc_status (struct usbnet *dev, struct urb *urb)
1535 struct usb_cdc_notification *event;
1537 if (urb->actual_length < sizeof *event)
1540 /* SPEED_CHANGE can get split into two 8-byte packets */
1541 if (test_and_clear_bit (EVENT_STS_SPLIT, &dev->flags)) {
1542 dumpspeed (dev, (__le32 *) urb->transfer_buffer);
1546 event = urb->transfer_buffer;
1547 switch (event->bNotificationType) {
1548 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
1549 if (netif_msg_timer (dev))
1550 devdbg (dev, "CDC: carrier %s",
1551 event->wValue ? "on" : "off");
1553 netif_carrier_on(dev->net);
1555 netif_carrier_off(dev->net);
1557 case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */
1558 if (netif_msg_timer (dev))
1559 devdbg (dev, "CDC: speed change (len %d)",
1560 urb->actual_length);
1561 if (urb->actual_length != (sizeof *event + 8))
1562 set_bit (EVENT_STS_SPLIT, &dev->flags);
1564 dumpspeed (dev, (__le32 *) &event[1]);
1566 // case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: /* RNDIS; or unsolicited */
1568 deverr (dev, "CDC: unexpected notification %02x!",
1569 event->bNotificationType);
1574 #endif /* NEED_GENERIC_CDC */
1577 #ifdef CONFIG_USB_CDCETHER
1578 #define HAVE_HARDWARE
1580 /*-------------------------------------------------------------------------
1582 * Communications Device Class, Ethernet Control model
1584 * Takes two interfaces. The DATA interface is inactive till an altsetting
1585 * is selected. Configuration data includes class descriptors.
1587 * This should interop with whatever the 2.4 "CDCEther.c" driver
1588 * (by Brad Hards) talked with.
1590 *-------------------------------------------------------------------------*/
1592 #include <linux/ctype.h>
1594 static u8 nibble (unsigned char c)
1596 if (likely (isdigit (c)))
1599 if (likely (isxdigit (c)))
1600 return 10 + c - 'A';
1605 get_ethernet_addr (struct usbnet *dev, struct usb_cdc_ether_desc *e)
1608 unsigned char buf [13];
1610 tmp = usb_string (dev->udev, e->iMACAddress, buf, sizeof buf);
1612 dev_dbg (&dev->udev->dev,
1613 "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp);
1618 for (i = tmp = 0; i < 6; i++, tmp += 2)
1619 dev->net->dev_addr [i] =
1620 (nibble (buf [tmp]) << 4) + nibble (buf [tmp + 1]);
1624 static int cdc_bind (struct usbnet *dev, struct usb_interface *intf)
1627 struct cdc_state *info = (void *) &dev->data;
1629 status = generic_cdc_bind (dev, intf);
1633 status = get_ethernet_addr (dev, info->ether);
1635 usb_set_intfdata(info->data, NULL);
1636 usb_driver_release_interface (&usbnet_driver, info->data);
1640 /* FIXME cdc-ether has some multicast code too, though it complains
1641 * in routine cases. info->ether describes the multicast support.
1646 static const struct driver_info cdc_info = {
1647 .description = "CDC Ethernet Device",
1648 .flags = FLAG_ETHER,
1649 // .check_connect = cdc_check_connect,
1651 .unbind = cdc_unbind,
1652 .status = cdc_status,
1655 #endif /* CONFIG_USB_CDCETHER */
1659 #ifdef CONFIG_USB_EPSON2888
1660 #define HAVE_HARDWARE
1662 /*-------------------------------------------------------------------------
1666 * This is the same idea as Linux PDAs (below) except the firmware in the
1667 * device might not be Tux-powered. Epson provides reference firmware that
1668 * implements this interface. Product developers can reuse or modify that
1669 * code, such as by using their own product and vendor codes.
1671 * Support was from Juro Bystricky <bystricky.juro@erd.epson.com>
1673 *-------------------------------------------------------------------------*/
1675 static const struct driver_info epson2888_info = {
1676 .description = "Epson USB Device",
1677 .check_connect = always_connected,
1682 #endif /* CONFIG_USB_EPSON2888 */
1685 #ifdef CONFIG_USB_GENESYS
1686 #define HAVE_HARDWARE
1688 /*-------------------------------------------------------------------------
1690 * GeneSys GL620USB-A (www.genesyslogic.com.tw)
1692 * ... should partially interop with the Win32 driver for this hardware
1693 * The GeneSys docs imply there's some NDIS issue motivating this framing.
1695 * Some info from GeneSys:
1696 * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk.
1697 * (Some cables, like the BAFO-100c, use the half duplex version.)
1698 * - For the full duplex model, the low bit of the version code says
1699 * which side is which ("left/right").
1700 * - For the half duplex type, a control/interrupt handshake settles
1701 * the transfer direction. (That's disabled here, partially coded.)
1702 * A control URB would block until other side writes an interrupt.
1704 * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw>
1705 * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>.
1707 *-------------------------------------------------------------------------*/
1709 // control msg write command
1710 #define GENELINK_CONNECT_WRITE 0xF0
1711 // interrupt pipe index
1712 #define GENELINK_INTERRUPT_PIPE 0x03
1713 // interrupt read buffer size
1714 #define INTERRUPT_BUFSIZE 0x08
1715 // interrupt pipe interval value
1716 #define GENELINK_INTERRUPT_INTERVAL 0x10
1717 // max transmit packet number per transmit
1718 #define GL_MAX_TRANSMIT_PACKETS 32
1719 // max packet length
1720 #define GL_MAX_PACKET_LEN 1514
1721 // max receive buffer size
1722 #define GL_RCV_BUF_SIZE \
1723 (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4)
1727 char packet_data [1];
1732 struct gl_packet packets;
1737 // FIXME: this code is incomplete, not debugged; it doesn't
1738 // handle interrupts correctly. interrupts should be generic
1739 // code like all other device I/O, anyway.
1742 struct urb *irq_urb;
1743 char irq_buf [INTERRUPT_BUFSIZE];
1746 static inline int gl_control_write (struct usbnet *dev, u8 request, u16 value)
1750 retval = usb_control_msg (dev->udev,
1751 usb_sndctrlpipe (dev->udev, 0),
1753 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
1758 CONTROL_TIMEOUT_MS);
1762 static void gl_interrupt_complete (struct urb *urb, struct pt_regs *regs)
1764 int status = urb->status;
1773 /* this urb is terminated, clean up */
1774 dbg("%s - urb shutting down with status: %d",
1775 __FUNCTION__, status);
1778 dbg("%s - nonzero urb status received: %d",
1779 __FUNCTION__, urb->status);
1782 status = usb_submit_urb (urb, GFP_ATOMIC);
1784 err ("%s - usb_submit_urb failed with result %d",
1785 __FUNCTION__, status);
1788 static int gl_interrupt_read (struct usbnet *dev)
1790 struct gl_priv *priv = dev->priv_data;
1793 // issue usb interrupt read
1794 if (priv && priv->irq_urb) {
1796 if ((retval = usb_submit_urb (priv->irq_urb, GFP_KERNEL)) != 0)
1797 dbg ("gl_interrupt_read: submit fail - %X...", retval);
1799 dbg ("gl_interrupt_read: submit success...");
1805 // check whether another side is connected
1806 static int genelink_check_connect (struct usbnet *dev)
1810 dbg ("genelink_check_connect...");
1812 // detect whether another side is connected
1813 if ((retval = gl_control_write (dev, GENELINK_CONNECT_WRITE, 0)) != 0) {
1814 dbg ("%s: genelink_check_connect write fail - %X",
1815 dev->net->name, retval);
1819 // usb interrupt read to ack another side
1820 if ((retval = gl_interrupt_read (dev)) != 0) {
1821 dbg ("%s: genelink_check_connect read fail - %X",
1822 dev->net->name, retval);
1826 dbg ("%s: genelink_check_connect read success", dev->net->name);
1830 // allocate and initialize the private data for genelink
1831 static int genelink_init (struct usbnet *dev)
1833 struct gl_priv *priv;
1835 // allocate the private data structure
1836 if ((priv = kmalloc (sizeof *priv, GFP_KERNEL)) == 0) {
1837 dbg ("%s: cannot allocate private data per device",
1843 if ((priv->irq_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
1844 dbg ("%s: cannot allocate private irq urb per device",
1851 usb_fill_int_urb (priv->irq_urb, dev->udev,
1852 usb_rcvintpipe (dev->udev, GENELINK_INTERRUPT_PIPE),
1853 priv->irq_buf, INTERRUPT_BUFSIZE,
1854 gl_interrupt_complete, 0,
1855 GENELINK_INTERRUPT_INTERVAL);
1857 // set private data pointer
1858 dev->priv_data = priv;
1863 // release the private data
1864 static int genelink_free (struct usbnet *dev)
1866 struct gl_priv *priv = dev->priv_data;
1871 // FIXME: can't cancel here; it's synchronous, and
1872 // should have happened earlier in any case (interrupt
1873 // handling needs to be generic)
1875 // cancel irq urb first
1876 usb_kill_urb (priv->irq_urb);
1879 usb_free_urb (priv->irq_urb);
1881 // free the private data structure
1889 static int genelink_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
1891 struct gl_header *header;
1892 struct gl_packet *packet;
1893 struct sk_buff *gl_skb;
1896 header = (struct gl_header *) skb->data;
1898 // get the packet count of the received skb
1899 le32_to_cpus (&header->packet_count);
1900 if ((header->packet_count > GL_MAX_TRANSMIT_PACKETS)
1901 || (header->packet_count < 0)) {
1902 dbg ("genelink: invalid received packet count %d",
1903 header->packet_count);
1907 // set the current packet pointer to the first packet
1908 packet = &header->packets;
1910 // decrement the length for the packet count size 4 bytes
1913 while (header->packet_count > 1) {
1914 // get the packet length
1915 size = packet->packet_length;
1917 // this may be a broken packet
1918 if (size > GL_MAX_PACKET_LEN) {
1919 dbg ("genelink: invalid rx length %d", size);
1923 // allocate the skb for the individual packet
1924 gl_skb = alloc_skb (size, GFP_ATOMIC);
1927 // copy the packet data to the new skb
1928 memcpy(skb_put(gl_skb, size), packet->packet_data, size);
1929 skb_return (dev, skb);
1932 // advance to the next packet
1933 packet = (struct gl_packet *)
1934 &packet->packet_data [size];
1935 header->packet_count--;
1937 // shift the data pointer to the next gl_packet
1938 skb_pull (skb, size + 4);
1941 // skip the packet length field 4 bytes
1944 if (skb->len > GL_MAX_PACKET_LEN) {
1945 dbg ("genelink: invalid rx length %d", skb->len);
1951 static struct sk_buff *
1952 genelink_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
1955 int length = skb->len;
1956 int headroom = skb_headroom (skb);
1957 int tailroom = skb_tailroom (skb);
1961 // FIXME: magic numbers, bleech
1962 padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1;
1964 if ((!skb_cloned (skb))
1965 && ((headroom + tailroom) >= (padlen + (4 + 4*1)))) {
1966 if ((headroom < (4 + 4*1)) || (tailroom < padlen)) {
1967 skb->data = memmove (skb->head + (4 + 4*1),
1968 skb->data, skb->len);
1969 skb->tail = skb->data + skb->len;
1972 struct sk_buff *skb2;
1973 skb2 = skb_copy_expand (skb, (4 + 4*1) , padlen, flags);
1974 dev_kfree_skb_any (skb);
1980 // attach the packet count to the header
1981 packet_count = (u32 *) skb_push (skb, (4 + 4*1));
1982 packet_len = packet_count + 1;
1984 // FIXME little endian?
1986 *packet_len = length;
1989 if ((skb->len % dev->maxpacket) == 0)
1995 static const struct driver_info genelink_info = {
1996 .description = "Genesys GeneLink",
1997 .flags = FLAG_FRAMING_GL | FLAG_NO_SETINT,
1998 .rx_fixup = genelink_rx_fixup,
1999 .tx_fixup = genelink_tx_fixup,
2004 .check_connect =genelink_check_connect,
2008 #endif /* CONFIG_USB_GENESYS */
2012 #ifdef CONFIG_USB_NET1080
2013 #define HAVE_HARDWARE
2015 /*-------------------------------------------------------------------------
2017 * Netchip 1080 driver ... http://www.netchip.com
2018 * Used in LapLink cables
2020 *-------------------------------------------------------------------------*/
2022 #define dev_packet_id data[0]
2023 #define frame_errors data[1]
2026 * NetChip framing of ethernet packets, supporting additional error
2027 * checks for links that may drop bulk packets from inside messages.
2028 * Odd USB length == always short read for last usb packet.
2030 * - Ethernet header (14 bytes)
2032 * - (optional padding byte, if needed so length becomes odd)
2035 * This framing is to be avoided for non-NetChip devices.
2038 struct nc_header { // packed:
2039 __le16 hdr_len; // sizeof nc_header (LE, all)
2040 __le16 packet_len; // payload size (including ethhdr)
2041 __le16 packet_id; // detects dropped packets
2042 #define MIN_HEADER 6
2044 // all else is optional, and must start with:
2045 // u16 vendorId; // from usb-if
2047 } __attribute__((__packed__));
2049 #define PAD_BYTE ((unsigned char)0xAC)
2053 } __attribute__((__packed__));
2055 // packets may use FLAG_FRAMING_NC and optional pad
2056 #define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
2057 + sizeof (struct ethhdr) \
2060 + sizeof (struct nc_trailer))
2062 #define MIN_FRAMED FRAMED_SIZE(0)
2066 * Zero means no timeout; else, how long a 64 byte bulk packet may be queued
2067 * before the hardware drops it. If that's done, the driver will need to
2068 * frame network packets to guard against the dropped USB packets. The win32
2069 * driver sets this for both sides of the link.
2071 #define NC_READ_TTL_MS ((u8)255) // ms
2074 * We ignore most registers and EEPROM contents.
2076 #define REG_USBCTL ((u8)0x04)
2077 #define REG_TTL ((u8)0x10)
2078 #define REG_STATUS ((u8)0x11)
2081 * Vendor specific requests to read/write data
2083 #define REQUEST_REGISTER ((u8)0x10)
2084 #define REQUEST_EEPROM ((u8)0x11)
2087 nc_vendor_read (struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr)
2089 int status = usb_control_msg (dev->udev,
2090 usb_rcvctrlpipe (dev->udev, 0),
2092 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2094 retval_ptr, sizeof *retval_ptr,
2095 CONTROL_TIMEOUT_MS);
2099 le16_to_cpus (retval_ptr);
2104 nc_register_read (struct usbnet *dev, u8 regnum, u16 *retval_ptr)
2106 return nc_vendor_read (dev, REQUEST_REGISTER, regnum, retval_ptr);
2109 // no retval ... can become async, usable in_interrupt()
2111 nc_vendor_write (struct usbnet *dev, u8 req, u8 regnum, u16 value)
2113 usb_control_msg (dev->udev,
2114 usb_sndctrlpipe (dev->udev, 0),
2116 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2118 NULL, 0, // data is in setup packet
2119 CONTROL_TIMEOUT_MS);
2123 nc_register_write (struct usbnet *dev, u8 regnum, u16 value)
2125 nc_vendor_write (dev, REQUEST_REGISTER, regnum, value);
2130 static void nc_dump_registers (struct usbnet *dev)
2133 u16 *vp = kmalloc (sizeof (u16));
2140 dbg ("%s registers:", dev->net->name);
2141 for (reg = 0; reg < 0x20; reg++) {
2144 // reading some registers is trouble
2145 if (reg >= 0x08 && reg <= 0xf)
2147 if (reg >= 0x12 && reg <= 0x1e)
2150 retval = nc_register_read (dev, reg, vp);
2152 dbg ("%s reg [0x%x] ==> error %d",
2153 dev->net->name, reg, retval);
2155 dbg ("%s reg [0x%x] = 0x%x",
2156 dev->net->name, reg, *vp);
2163 /*-------------------------------------------------------------------------*/
2169 #define USBCTL_WRITABLE_MASK 0x1f0f
2170 // bits 15-13 reserved, r/o
2171 #define USBCTL_ENABLE_LANG (1 << 12)
2172 #define USBCTL_ENABLE_MFGR (1 << 11)
2173 #define USBCTL_ENABLE_PROD (1 << 10)
2174 #define USBCTL_ENABLE_SERIAL (1 << 9)
2175 #define USBCTL_ENABLE_DEFAULTS (1 << 8)
2176 // bits 7-4 reserved, r/o
2177 #define USBCTL_FLUSH_OTHER (1 << 3)
2178 #define USBCTL_FLUSH_THIS (1 << 2)
2179 #define USBCTL_DISCONN_OTHER (1 << 1)
2180 #define USBCTL_DISCONN_THIS (1 << 0)
2182 static inline void nc_dump_usbctl (struct usbnet *dev, u16 usbctl)
2184 if (!netif_msg_link (dev))
2186 devdbg (dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
2188 " other%s%s; r/o 0x%x",
2189 dev->udev->bus->bus_name, dev->udev->devpath,
2191 (usbctl & USBCTL_ENABLE_LANG) ? " lang" : "",
2192 (usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "",
2193 (usbctl & USBCTL_ENABLE_PROD) ? " prod" : "",
2194 (usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "",
2195 (usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "",
2197 (usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "",
2198 (usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "",
2199 (usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "",
2200 (usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "",
2201 usbctl & ~USBCTL_WRITABLE_MASK
2205 /*-------------------------------------------------------------------------*/
2211 #define STATUS_PORT_A (1 << 15)
2213 #define STATUS_CONN_OTHER (1 << 14)
2214 #define STATUS_SUSPEND_OTHER (1 << 13)
2215 #define STATUS_MAILBOX_OTHER (1 << 12)
2216 #define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03)
2218 #define STATUS_CONN_THIS (1 << 6)
2219 #define STATUS_SUSPEND_THIS (1 << 5)
2220 #define STATUS_MAILBOX_THIS (1 << 4)
2221 #define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03)
2223 #define STATUS_UNSPEC_MASK 0x0c8c
2224 #define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK))
2227 static inline void nc_dump_status (struct usbnet *dev, u16 status)
2229 if (!netif_msg_link (dev))
2231 devdbg (dev, "net1080 %s-%s status 0x%x:"
2232 " this (%c) PKT=%d%s%s%s;"
2233 " other PKT=%d%s%s%s; unspec 0x%x",
2234 dev->udev->bus->bus_name, dev->udev->devpath,
2237 // XXX the packet counts don't seem right
2238 // (1 at reset, not 0); maybe UNSPEC too
2240 (status & STATUS_PORT_A) ? 'A' : 'B',
2241 STATUS_PACKETS_THIS (status),
2242 (status & STATUS_CONN_THIS) ? " CON" : "",
2243 (status & STATUS_SUSPEND_THIS) ? " SUS" : "",
2244 (status & STATUS_MAILBOX_THIS) ? " MBOX" : "",
2246 STATUS_PACKETS_OTHER (status),
2247 (status & STATUS_CONN_OTHER) ? " CON" : "",
2248 (status & STATUS_SUSPEND_OTHER) ? " SUS" : "",
2249 (status & STATUS_MAILBOX_OTHER) ? " MBOX" : "",
2251 status & STATUS_UNSPEC_MASK
2255 /*-------------------------------------------------------------------------*/
2261 #define TTL_THIS(ttl) (0x00ff & ttl)
2262 #define TTL_OTHER(ttl) (0x00ff & (ttl >> 8))
2263 #define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this))))
2265 static inline void nc_dump_ttl (struct usbnet *dev, u16 ttl)
2267 if (netif_msg_link (dev))
2268 devdbg (dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
2269 dev->udev->bus->bus_name, dev->udev->devpath,
2270 ttl, TTL_THIS (ttl), TTL_OTHER (ttl));
2273 /*-------------------------------------------------------------------------*/
2275 static int net1080_reset (struct usbnet *dev)
2277 u16 usbctl, status, ttl;
2278 u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
2284 // nc_dump_registers (dev);
2286 if ((retval = nc_register_read (dev, REG_STATUS, vp)) < 0) {
2287 dbg ("can't read %s-%s status: %d",
2288 dev->udev->bus->bus_name, dev->udev->devpath, retval);
2292 nc_dump_status (dev, status);
2294 if ((retval = nc_register_read (dev, REG_USBCTL, vp)) < 0) {
2295 dbg ("can't read USBCTL, %d", retval);
2299 nc_dump_usbctl (dev, usbctl);
2301 nc_register_write (dev, REG_USBCTL,
2302 USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER);
2304 if ((retval = nc_register_read (dev, REG_TTL, vp)) < 0) {
2305 dbg ("can't read TTL, %d", retval);
2309 // nc_dump_ttl (dev, ttl);
2311 nc_register_write (dev, REG_TTL,
2312 MK_TTL (NC_READ_TTL_MS, TTL_OTHER (ttl)) );
2313 dbg ("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS);
2315 if (netif_msg_link (dev))
2316 devinfo (dev, "port %c, peer %sconnected",
2317 (status & STATUS_PORT_A) ? 'A' : 'B',
2318 (status & STATUS_CONN_OTHER) ? "" : "dis"
2327 static int net1080_check_connect (struct usbnet *dev)
2331 u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
2335 retval = nc_register_read (dev, REG_STATUS, vp);
2339 dbg ("%s net1080_check_conn read - %d", dev->net->name, retval);
2342 if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER)
2347 static void nc_flush_complete (struct urb *urb, struct pt_regs *regs)
2349 kfree (urb->context);
2353 static void nc_ensure_sync (struct usbnet *dev)
2355 dev->frame_errors++;
2356 if (dev->frame_errors > 5) {
2358 struct usb_ctrlrequest *req;
2362 urb = usb_alloc_urb (0, SLAB_ATOMIC);
2366 req = kmalloc (sizeof *req, GFP_ATOMIC);
2372 req->bRequestType = USB_DIR_OUT
2375 req->bRequest = REQUEST_REGISTER;
2376 req->wValue = cpu_to_le16 (USBCTL_FLUSH_THIS
2377 | USBCTL_FLUSH_OTHER);
2378 req->wIndex = cpu_to_le16 (REG_USBCTL);
2379 req->wLength = cpu_to_le16 (0);
2381 /* queue an async control request, we don't need
2382 * to do anything when it finishes except clean up.
2384 usb_fill_control_urb (urb, dev->udev,
2385 usb_sndctrlpipe (dev->udev, 0),
2386 (unsigned char *) req,
2388 nc_flush_complete, req);
2389 status = usb_submit_urb (urb, GFP_ATOMIC);
2396 if (netif_msg_rx_err (dev))
2397 devdbg (dev, "flush net1080; too many framing errors");
2398 dev->frame_errors = 0;
2402 static int net1080_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
2404 struct nc_header *header;
2405 struct nc_trailer *trailer;
2406 u16 hdr_len, packet_len;
2408 if (!(skb->len & 0x01)
2409 || MIN_FRAMED > skb->len
2410 || skb->len > FRAMED_SIZE (dev->net->mtu)) {
2411 dev->stats.rx_frame_errors++;
2412 dbg ("rx framesize %d range %d..%d mtu %d", skb->len,
2413 (int)MIN_FRAMED, (int)FRAMED_SIZE (dev->net->mtu),
2415 nc_ensure_sync (dev);
2419 header = (struct nc_header *) skb->data;
2420 hdr_len = le16_to_cpup (&header->hdr_len);
2421 packet_len = le16_to_cpup (&header->packet_len);
2422 if (FRAMED_SIZE (packet_len) > MAX_PACKET) {
2423 dev->stats.rx_frame_errors++;
2424 dbg ("packet too big, %d", packet_len);
2425 nc_ensure_sync (dev);
2427 } else if (hdr_len < MIN_HEADER) {
2428 dev->stats.rx_frame_errors++;
2429 dbg ("header too short, %d", hdr_len);
2430 nc_ensure_sync (dev);
2432 } else if (hdr_len > MIN_HEADER) {
2433 // out of band data for us?
2434 dbg ("header OOB, %d bytes", hdr_len - MIN_HEADER);
2435 nc_ensure_sync (dev);
2436 // switch (vendor/product ids) { ... }
2438 skb_pull (skb, hdr_len);
2440 trailer = (struct nc_trailer *)
2441 (skb->data + skb->len - sizeof *trailer);
2442 skb_trim (skb, skb->len - sizeof *trailer);
2444 if ((packet_len & 0x01) == 0) {
2445 if (skb->data [packet_len] != PAD_BYTE) {
2446 dev->stats.rx_frame_errors++;
2450 skb_trim (skb, skb->len - 1);
2452 if (skb->len != packet_len) {
2453 dev->stats.rx_frame_errors++;
2454 dbg ("bad packet len %d (expected %d)",
2455 skb->len, packet_len);
2456 nc_ensure_sync (dev);
2459 if (header->packet_id != get_unaligned (&trailer->packet_id)) {
2460 dev->stats.rx_fifo_errors++;
2461 dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
2462 le16_to_cpu (header->packet_id),
2463 le16_to_cpu (trailer->packet_id));
2467 devdbg (dev, "frame <rx h %d p %d id %d", header->hdr_len,
2468 header->packet_len, header->packet_id);
2470 dev->frame_errors = 0;
2474 static struct sk_buff *
2475 net1080_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
2478 struct sk_buff *skb2;
2480 padlen = ((skb->len + sizeof (struct nc_header)
2481 + sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
2482 if (!skb_cloned (skb)) {
2483 int headroom = skb_headroom (skb);
2484 int tailroom = skb_tailroom (skb);
2486 if ((padlen + sizeof (struct nc_trailer)) <= tailroom
2487 && sizeof (struct nc_header) <= headroom)
2488 /* There's enough head and tail room */
2491 if ((sizeof (struct nc_header) + padlen
2492 + sizeof (struct nc_trailer)) <
2493 (headroom + tailroom)) {
2494 /* There's enough total room, so just readjust */
2495 skb->data = memmove (skb->head
2496 + sizeof (struct nc_header),
2497 skb->data, skb->len);
2498 skb->tail = skb->data + skb->len;
2503 /* Create a new skb to use with the correct size */
2504 skb2 = skb_copy_expand (skb,
2505 sizeof (struct nc_header),
2506 sizeof (struct nc_trailer) + padlen,
2508 dev_kfree_skb_any (skb);
2512 static const struct driver_info net1080_info = {
2513 .description = "NetChip TurboCONNECT",
2514 .flags = FLAG_FRAMING_NC,
2515 .reset = net1080_reset,
2516 .check_connect =net1080_check_connect,
2517 .rx_fixup = net1080_rx_fixup,
2518 .tx_fixup = net1080_tx_fixup,
2521 #endif /* CONFIG_USB_NET1080 */
2525 #ifdef CONFIG_USB_PL2301
2526 #define HAVE_HARDWARE
2528 /*-------------------------------------------------------------------------
2530 * Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com
2532 * The protocol and handshaking used here should be bug-compatible
2533 * with the Linux 2.2 "plusb" driver, by Deti Fliegl.
2535 *-------------------------------------------------------------------------*/
2538 * Bits 0-4 can be used for software handshaking; they're set from
2539 * one end, cleared from the other, "read" with the interrupt byte.
2541 #define PL_S_EN (1<<7) /* (feature only) suspend enable */
2542 /* reserved bit -- rx ready (6) ? */
2543 #define PL_TX_READY (1<<5) /* (interrupt only) transmit ready */
2544 #define PL_RESET_OUT (1<<4) /* reset output pipe */
2545 #define PL_RESET_IN (1<<3) /* reset input pipe */
2546 #define PL_TX_C (1<<2) /* transmission complete */
2547 #define PL_TX_REQ (1<<1) /* transmission received */
2548 #define PL_PEER_E (1<<0) /* peer exists */
2551 pl_vendor_req (struct usbnet *dev, u8 req, u8 val, u8 index)
2553 return usb_control_msg (dev->udev,
2554 usb_rcvctrlpipe (dev->udev, 0),
2556 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2559 CONTROL_TIMEOUT_MS);
2563 pl_clear_QuickLink_features (struct usbnet *dev, int val)
2565 return pl_vendor_req (dev, 1, (u8) val, 0);
2569 pl_set_QuickLink_features (struct usbnet *dev, int val)
2571 return pl_vendor_req (dev, 3, (u8) val, 0);
2574 /*-------------------------------------------------------------------------*/
2576 static int pl_reset (struct usbnet *dev)
2578 /* some units seem to need this reset, others reject it utterly.
2579 * FIXME be more like "naplink" or windows drivers.
2581 (void) pl_set_QuickLink_features (dev,
2582 PL_S_EN|PL_RESET_OUT|PL_RESET_IN|PL_PEER_E);
2586 static const struct driver_info prolific_info = {
2587 .description = "Prolific PL-2301/PL-2302",
2588 .flags = FLAG_NO_SETINT,
2589 /* some PL-2302 versions seem to fail usb_set_interface() */
2593 #endif /* CONFIG_USB_PL2301 */
2596 #ifdef CONFIG_USB_KC2190
2597 #define HAVE_HARDWARE
2598 static const struct driver_info kc2190_info = {
2599 .description = "KC Technology KC-190",
2601 #endif /* CONFIG_USB_KC2190 */
2604 #ifdef CONFIG_USB_ARMLINUX
2605 #define HAVE_HARDWARE
2607 /*-------------------------------------------------------------------------
2609 * Intel's SA-1100 chip integrates basic USB support, and is used
2610 * in PDAs like some iPaqs, the Yopy, some Zaurus models, and more.
2611 * When they run Linux, arch/arm/mach-sa1100/usb-eth.c may be used to
2612 * network using minimal USB framing data.
2614 * This describes the driver currently in standard ARM Linux kernels.
2615 * The Zaurus uses a different driver (see later).
2617 * PXA25x and PXA210 use XScale cores (ARM v5TE) with better USB support
2618 * and different USB endpoint numbering than the SA1100 devices. The
2619 * mach-pxa/usb-eth.c driver re-uses the device ids from mach-sa1100
2620 * so we rely on the endpoint descriptors.
2622 *-------------------------------------------------------------------------*/
2624 static const struct driver_info linuxdev_info = {
2625 .description = "Linux Device",
2626 .check_connect = always_connected,
2629 static const struct driver_info yopy_info = {
2630 .description = "Yopy",
2631 .check_connect = always_connected,
2634 static const struct driver_info blob_info = {
2635 .description = "Boot Loader OBject",
2636 .check_connect = always_connected,
2639 #endif /* CONFIG_USB_ARMLINUX */
2642 #ifdef CONFIG_USB_ZAURUS
2643 #define HAVE_HARDWARE
2645 #include <linux/crc32.h>
2647 /*-------------------------------------------------------------------------
2649 * Zaurus is also a SA-1110 based PDA, but one using a different driver
2650 * (and framing) for its USB slave/gadget controller than the case above.
2652 * For the current version of that driver, the main way that framing is
2653 * nonstandard (also from perspective of the CDC ethernet model!) is a
2654 * crc32, added to help detect when some sa1100 usb-to-memory DMA errata
2655 * haven't been fully worked around. Also, all Zaurii use the same
2656 * default Ethernet address.
2658 * PXA based models use the same framing, and also can't implement
2659 * set_interface properly.
2661 * All known Zaurii lie about their standards conformance. Most lie by
2662 * saying they support CDC Ethernet. Some lie and say they support CDC
2663 * MDLM (as if for access to cell phone modems). Someone, please beat
2664 * on Sharp for a while with a cluestick.
2666 *-------------------------------------------------------------------------*/
2668 static struct sk_buff *
2669 zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
2672 struct sk_buff *skb2;
2675 if (!skb_cloned (skb)) {
2676 int tailroom = skb_tailroom (skb);
2677 if ((padlen + 4) <= tailroom)
2680 skb2 = skb_copy_expand (skb, 0, 4 + padlen, flags);
2681 dev_kfree_skb_any (skb);
2686 fcs = crc32_le (~0, skb->data, skb->len);
2689 *skb_put (skb, 1) = fcs & 0xff;
2690 *skb_put (skb, 1) = (fcs>> 8) & 0xff;
2691 *skb_put (skb, 1) = (fcs>>16) & 0xff;
2692 *skb_put (skb, 1) = (fcs>>24) & 0xff;
2697 static const struct driver_info zaurus_sl5x00_info = {
2698 .description = "Sharp Zaurus SL-5x00",
2699 .flags = FLAG_FRAMING_Z,
2700 .check_connect = always_connected,
2701 .bind = generic_cdc_bind,
2702 .unbind = cdc_unbind,
2703 .tx_fixup = zaurus_tx_fixup,
2705 #define ZAURUS_STRONGARM_INFO ((unsigned long)&zaurus_sl5x00_info)
2707 static const struct driver_info zaurus_pxa_info = {
2708 .description = "Sharp Zaurus, PXA-2xx based",
2709 .flags = FLAG_FRAMING_Z,
2710 .check_connect = always_connected,
2711 .bind = generic_cdc_bind,
2712 .unbind = cdc_unbind,
2713 .tx_fixup = zaurus_tx_fixup,
2715 #define ZAURUS_PXA_INFO ((unsigned long)&zaurus_pxa_info)
2717 static const struct driver_info zaurus_pxa_mdlm_info = {
2718 .description = "Sharp Zaurus, PXA-255 based",
2719 .flags = FLAG_FRAMING_Z,
2720 .check_connect = always_connected,
2721 .tx_fixup = zaurus_tx_fixup,
2724 static const struct driver_info olympus_mxl_info = {
2725 .description = "Olympus R1000",
2726 .flags = FLAG_FRAMING_Z,
2727 .check_connect = always_connected,
2728 .bind = generic_cdc_bind,
2729 .unbind = cdc_unbind,
2730 .tx_fixup = zaurus_tx_fixup,
2732 #define OLYMPUS_MXL_INFO ((unsigned long)&olympus_mxl_info)
2736 /* blacklist all those devices */
2737 #define ZAURUS_STRONGARM_INFO 0
2738 #define ZAURUS_PXA_INFO 0
2739 #define OLYMPUS_MXL_INFO 0
2744 /*-------------------------------------------------------------------------
2746 * Network Device Driver (peer link to "Host Device", from USB host)
2748 *-------------------------------------------------------------------------*/
2750 static int usbnet_change_mtu (struct net_device *net, int new_mtu)
2752 struct usbnet *dev = netdev_priv(net);
2754 if (new_mtu <= MIN_PACKET || new_mtu > MAX_PACKET)
2756 #ifdef CONFIG_USB_NET1080
2757 if (((dev->driver_info->flags) & FLAG_FRAMING_NC)) {
2758 if (FRAMED_SIZE (new_mtu) > MAX_PACKET)
2762 #ifdef CONFIG_USB_GENESYS
2763 if (((dev->driver_info->flags) & FLAG_FRAMING_GL)
2764 && new_mtu > GL_MAX_PACKET_LEN)
2767 // no second zero-length packet read wanted after mtu-sized packets
2768 if (((new_mtu + sizeof (struct ethhdr)) % dev->maxpacket) == 0)
2774 /*-------------------------------------------------------------------------*/
2776 static struct net_device_stats *usbnet_get_stats (struct net_device *net)
2778 struct usbnet *dev = netdev_priv(net);
2782 /*-------------------------------------------------------------------------*/
2784 /* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from
2785 * completion callbacks. 2.5 should have fixed those bugs...
2788 static void defer_bh (struct usbnet *dev, struct sk_buff *skb)
2790 struct sk_buff_head *list = skb->list;
2791 unsigned long flags;
2793 spin_lock_irqsave (&list->lock, flags);
2794 __skb_unlink (skb, list);
2795 spin_unlock (&list->lock);
2796 spin_lock (&dev->done.lock);
2797 __skb_queue_tail (&dev->done, skb);
2798 if (dev->done.qlen == 1)
2799 tasklet_schedule (&dev->bh);
2800 spin_unlock_irqrestore (&dev->done.lock, flags);
2803 /* some work can't be done in tasklets, so we use keventd
2805 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
2806 * but tasklet_schedule() doesn't. hope the failure is rare.
2808 static void defer_kevent (struct usbnet *dev, int work)
2810 set_bit (work, &dev->flags);
2811 if (!schedule_work (&dev->kevent))
2812 deverr (dev, "kevent %d may have been dropped", work);
2814 devdbg (dev, "kevent %d scheduled", work);
2817 /*-------------------------------------------------------------------------*/
2819 static void rx_complete (struct urb *urb, struct pt_regs *regs);
2821 static void rx_submit (struct usbnet *dev, struct urb *urb, int flags)
2823 struct sk_buff *skb;
2824 struct skb_data *entry;
2826 unsigned long lockflags;
2829 #ifdef CONFIG_USB_NET1080
2830 if (dev->driver_info->flags & FLAG_FRAMING_NC)
2831 size = FRAMED_SIZE (dev->net->mtu);
2834 #ifdef CONFIG_USB_GENESYS
2835 if (dev->driver_info->flags & FLAG_FRAMING_GL)
2836 size = GL_RCV_BUF_SIZE;
2839 #ifdef CONFIG_USB_ZAURUS
2840 if (dev->driver_info->flags & FLAG_FRAMING_Z)
2841 size = 6 + (sizeof (struct ethhdr) + dev->net->mtu);
2844 #ifdef CONFIG_USB_RNDIS
2845 if (dev->driver_info->flags & FLAG_FRAMING_RN)
2846 size = RNDIS_MAX_TRANSFER;
2849 #ifdef CONFIG_USB_AX8817X
2850 if (dev->driver_info->flags & FLAG_FRAMING_AX)
2854 size = (sizeof (struct ethhdr) + dev->net->mtu);
2856 if ((skb = alloc_skb (size + NET_IP_ALIGN, flags)) == NULL) {
2857 if (netif_msg_rx_err (dev))
2858 devdbg (dev, "no rx skb");
2859 defer_kevent (dev, EVENT_RX_MEMORY);
2863 skb_reserve (skb, NET_IP_ALIGN);
2865 entry = (struct skb_data *) skb->cb;
2868 entry->state = rx_start;
2871 usb_fill_bulk_urb (urb, dev->udev, dev->in,
2872 skb->data, size, rx_complete, skb);
2873 urb->transfer_flags |= URB_ASYNC_UNLINK;
2875 spin_lock_irqsave (&dev->rxq.lock, lockflags);
2877 if (netif_running (dev->net)
2878 && netif_device_present (dev->net)
2879 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
2880 switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){
2882 defer_kevent (dev, EVENT_RX_HALT);
2885 defer_kevent (dev, EVENT_RX_MEMORY);
2888 if (netif_msg_ifdown (dev))
2889 devdbg (dev, "device gone");
2890 netif_device_detach (dev->net);
2893 if (netif_msg_rx_err (dev))
2894 devdbg (dev, "rx submit, %d", retval);
2895 tasklet_schedule (&dev->bh);
2898 __skb_queue_tail (&dev->rxq, skb);
2901 if (netif_msg_ifdown (dev))
2902 devdbg (dev, "rx: stopped");
2905 spin_unlock_irqrestore (&dev->rxq.lock, lockflags);
2907 dev_kfree_skb_any (skb);
2913 /*-------------------------------------------------------------------------*/
2915 static inline void rx_process (struct usbnet *dev, struct sk_buff *skb)
2917 if (dev->driver_info->rx_fixup
2918 && !dev->driver_info->rx_fixup (dev, skb))
2920 // else network stack removes extra byte if we forced a short packet
2923 skb_return (dev, skb);
2925 if (netif_msg_rx_err (dev))
2926 devdbg (dev, "drop");
2928 dev->stats.rx_errors++;
2929 skb_queue_tail (&dev->done, skb);
2933 /*-------------------------------------------------------------------------*/
2935 static void rx_complete (struct urb *urb, struct pt_regs *regs)
2937 struct sk_buff *skb = (struct sk_buff *) urb->context;
2938 struct skb_data *entry = (struct skb_data *) skb->cb;
2939 struct usbnet *dev = entry->dev;
2940 int urb_status = urb->status;
2942 skb_put (skb, urb->actual_length);
2943 entry->state = rx_done;
2946 switch (urb_status) {
2949 if (MIN_PACKET > skb->len || skb->len > MAX_PACKET) {
2950 entry->state = rx_cleanup;
2951 dev->stats.rx_errors++;
2952 dev->stats.rx_length_errors++;
2953 if (netif_msg_rx_err (dev))
2954 devdbg (dev, "rx length %d", skb->len);
2958 // stalls need manual reset. this is rare ... except that
2959 // when going through USB 2.0 TTs, unplug appears this way.
2960 // we avoid the highspeed version of the ETIMEOUT/EILSEQ
2961 // storm, recovering as needed.
2963 dev->stats.rx_errors++;
2964 defer_kevent (dev, EVENT_RX_HALT);
2967 // software-driven interface shutdown
2968 case -ECONNRESET: // async unlink
2969 case -ESHUTDOWN: // hardware gone
2970 if (netif_msg_ifdown (dev))
2971 devdbg (dev, "rx shutdown, code %d", urb_status);
2974 // we get controller i/o faults during khubd disconnect() delays.
2975 // throttle down resubmits, to avoid log floods; just temporarily,
2976 // so we still recover when the fault isn't a khubd delay.
2977 case -EPROTO: // ehci
2978 case -ETIMEDOUT: // ohci
2979 case -EILSEQ: // uhci
2980 dev->stats.rx_errors++;
2981 if (!timer_pending (&dev->delay)) {
2982 mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES);
2983 if (netif_msg_link (dev))
2984 devdbg (dev, "rx throttle %d", urb_status);
2987 entry->state = rx_cleanup;
2992 // data overrun ... flush fifo?
2994 dev->stats.rx_over_errors++;
2998 entry->state = rx_cleanup;
2999 dev->stats.rx_errors++;
3000 if (netif_msg_rx_err (dev))
3001 devdbg (dev, "rx status %d", urb_status);
3005 defer_bh (dev, skb);
3008 if (netif_running (dev->net)
3009 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
3010 rx_submit (dev, urb, GFP_ATOMIC);
3015 if (netif_msg_rx_err (dev))
3016 devdbg (dev, "no read resubmitted");
3019 static void intr_complete (struct urb *urb, struct pt_regs *regs)
3021 struct usbnet *dev = urb->context;
3022 int status = urb->status;
3027 dev->driver_info->status(dev, urb);
3030 /* software-driven interface shutdown */
3031 case -ENOENT: // urb killed
3032 case -ESHUTDOWN: // hardware gone
3033 if (netif_msg_ifdown (dev))
3034 devdbg (dev, "intr shutdown, code %d", status);
3037 /* NOTE: not throttling like RX/TX, since this endpoint
3038 * already polls infrequently
3041 devdbg (dev, "intr status %d", status);
3045 if (!netif_running (dev->net))
3048 memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
3049 status = usb_submit_urb (urb, GFP_ATOMIC);
3050 if (status != 0 && netif_msg_timer (dev))
3051 deverr(dev, "intr resubmit --> %d", status);
3054 /*-------------------------------------------------------------------------*/
3056 // unlink pending rx/tx; completion handlers do all other cleanup
3058 static int unlink_urbs (struct usbnet *dev, struct sk_buff_head *q)
3060 unsigned long flags;
3061 struct sk_buff *skb, *skbnext;
3064 spin_lock_irqsave (&q->lock, flags);
3065 for (skb = q->next; skb != (struct sk_buff *) q; skb = skbnext) {
3066 struct skb_data *entry;
3070 entry = (struct skb_data *) skb->cb;
3072 skbnext = skb->next;
3074 // during some PM-driven resume scenarios,
3075 // these (async) unlinks complete immediately
3076 retval = usb_unlink_urb (urb);
3077 if (retval != -EINPROGRESS && retval != 0)
3078 devdbg (dev, "unlink urb err, %d", retval);
3082 spin_unlock_irqrestore (&q->lock, flags);
3087 /*-------------------------------------------------------------------------*/
3089 // precondition: never called in_interrupt
3091 static int usbnet_stop (struct net_device *net)
3093 struct usbnet *dev = netdev_priv(net);
3095 DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup);
3096 DECLARE_WAITQUEUE (wait, current);
3098 netif_stop_queue (net);
3100 if (netif_msg_ifdown (dev))
3101 devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
3102 dev->stats.rx_packets, dev->stats.tx_packets,
3103 dev->stats.rx_errors, dev->stats.tx_errors
3106 // ensure there are no more active urbs
3107 add_wait_queue (&unlink_wakeup, &wait);
3108 dev->wait = &unlink_wakeup;
3109 temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq);
3111 // maybe wait for deletions to finish.
3112 while (skb_queue_len (&dev->rxq)
3113 && skb_queue_len (&dev->txq)
3114 && skb_queue_len (&dev->done)) {
3115 msleep(UNLINK_TIMEOUT_MS);
3116 if (netif_msg_ifdown (dev))
3117 devdbg (dev, "waited for %d urb completions", temp);
3120 remove_wait_queue (&unlink_wakeup, &wait);
3122 usb_kill_urb(dev->interrupt);
3124 /* deferred work (task, timer, softirq) must also stop.
3125 * can't flush_scheduled_work() until we drop rtnl (later),
3126 * else workers could deadlock; so make workers a NOP.
3129 del_timer_sync (&dev->delay);
3130 tasklet_kill (&dev->bh);
3135 /*-------------------------------------------------------------------------*/
3137 // posts reads, and enables write queuing
3139 // precondition: never called in_interrupt
3141 static int usbnet_open (struct net_device *net)
3143 struct usbnet *dev = netdev_priv(net);
3145 struct driver_info *info = dev->driver_info;
3147 // put into "known safe" state
3148 if (info->reset && (retval = info->reset (dev)) < 0) {
3149 if (netif_msg_ifup (dev))
3151 "open reset fail (%d) usbnet usb-%s-%s, %s",
3153 dev->udev->bus->bus_name, dev->udev->devpath,
3158 // insist peer be connected
3159 if (info->check_connect && (retval = info->check_connect (dev)) < 0) {
3160 if (netif_msg_ifup (dev))
3161 devdbg (dev, "can't open; %d", retval);
3165 /* start any status interrupt transfer */
3166 if (dev->interrupt) {
3167 retval = usb_submit_urb (dev->interrupt, GFP_KERNEL);
3169 if (netif_msg_ifup (dev))
3170 deverr (dev, "intr submit %d", retval);
3175 netif_start_queue (net);
3176 if (netif_msg_ifup (dev)) {
3179 if (dev->driver_info->flags & FLAG_FRAMING_NC)
3180 framing = "NetChip";
3181 else if (dev->driver_info->flags & FLAG_FRAMING_GL)
3182 framing = "GeneSys";
3183 else if (dev->driver_info->flags & FLAG_FRAMING_Z)
3185 else if (dev->driver_info->flags & FLAG_FRAMING_RN)
3187 else if (dev->driver_info->flags & FLAG_FRAMING_AX)
3192 devinfo (dev, "open: enable queueing "
3193 "(rx %d, tx %d) mtu %d %s framing",
3194 RX_QLEN (dev), TX_QLEN (dev), dev->net->mtu,
3198 // delay posting reads until we're fully open
3199 tasklet_schedule (&dev->bh);
3204 /*-------------------------------------------------------------------------*/
3206 static void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
3208 struct usbnet *dev = netdev_priv(net);
3210 strncpy (info->driver, driver_name, sizeof info->driver);
3211 strncpy (info->version, DRIVER_VERSION, sizeof info->version);
3212 strncpy (info->fw_version, dev->driver_info->description,
3213 sizeof info->fw_version);
3214 usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info);
3217 static u32 usbnet_get_link (struct net_device *net)
3219 struct usbnet *dev = netdev_priv(net);
3221 /* If a check_connect is defined, return it's results */
3222 if (dev->driver_info->check_connect)
3223 return dev->driver_info->check_connect (dev) == 0;
3225 /* Otherwise, we're up to avoid breaking scripts */
3229 static u32 usbnet_get_msglevel (struct net_device *net)
3231 struct usbnet *dev = netdev_priv(net);
3233 return dev->msg_enable;
3236 static void usbnet_set_msglevel (struct net_device *net, u32 level)
3238 struct usbnet *dev = netdev_priv(net);
3240 dev->msg_enable = level;
3243 static int usbnet_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
3247 struct usbnet *dev = netdev_priv(net);
3249 if (dev->mii.mdio_read != NULL && dev->mii.mdio_write != NULL)
3250 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
3256 /*-------------------------------------------------------------------------*/
3258 /* work that cannot be done in interrupt context uses keventd.
3260 * NOTE: with 2.5 we could do more of this using completion callbacks,
3261 * especially now that control transfers can be queued.
3266 struct usbnet *dev = data;
3269 /* usb_clear_halt() needs a thread context */
3270 if (test_bit (EVENT_TX_HALT, &dev->flags)) {
3271 unlink_urbs (dev, &dev->txq);
3272 status = usb_clear_halt (dev->udev, dev->out);
3273 if (status < 0 && status != -EPIPE) {
3274 if (netif_msg_tx_err (dev))
3275 deverr (dev, "can't clear tx halt, status %d",
3278 clear_bit (EVENT_TX_HALT, &dev->flags);
3279 netif_wake_queue (dev->net);
3282 if (test_bit (EVENT_RX_HALT, &dev->flags)) {
3283 unlink_urbs (dev, &dev->rxq);
3284 status = usb_clear_halt (dev->udev, dev->in);
3285 if (status < 0 && status != -EPIPE) {
3286 if (netif_msg_rx_err (dev))
3287 deverr (dev, "can't clear rx halt, status %d",
3290 clear_bit (EVENT_RX_HALT, &dev->flags);
3291 tasklet_schedule (&dev->bh);
3295 /* tasklet could resubmit itself forever if memory is tight */
3296 if (test_bit (EVENT_RX_MEMORY, &dev->flags)) {
3297 struct urb *urb = NULL;
3299 if (netif_running (dev->net))
3300 urb = usb_alloc_urb (0, GFP_KERNEL);
3302 clear_bit (EVENT_RX_MEMORY, &dev->flags);
3304 clear_bit (EVENT_RX_MEMORY, &dev->flags);
3305 rx_submit (dev, urb, GFP_KERNEL);
3306 tasklet_schedule (&dev->bh);
3311 devdbg (dev, "kevent done, flags = 0x%lx",
3315 /*-------------------------------------------------------------------------*/
3317 static void tx_complete (struct urb *urb, struct pt_regs *regs)
3319 struct sk_buff *skb = (struct sk_buff *) urb->context;
3320 struct skb_data *entry = (struct skb_data *) skb->cb;
3321 struct usbnet *dev = entry->dev;
3323 if (urb->status == 0) {
3324 dev->stats.tx_packets++;
3325 dev->stats.tx_bytes += entry->length;
3327 dev->stats.tx_errors++;
3329 switch (urb->status) {
3331 defer_kevent (dev, EVENT_TX_HALT);
3334 /* software-driven interface shutdown */
3335 case -ECONNRESET: // async unlink
3336 case -ESHUTDOWN: // hardware gone
3339 // like rx, tx gets controller i/o faults during khubd delays
3340 // and so it uses the same throttling mechanism.
3341 case -EPROTO: // ehci
3342 case -ETIMEDOUT: // ohci
3343 case -EILSEQ: // uhci
3344 if (!timer_pending (&dev->delay)) {
3345 mod_timer (&dev->delay,
3346 jiffies + THROTTLE_JIFFIES);
3347 if (netif_msg_link (dev))
3348 devdbg (dev, "tx throttle %d",
3351 netif_stop_queue (dev->net);
3354 if (netif_msg_tx_err (dev))
3355 devdbg (dev, "tx err %d", entry->urb->status);
3361 entry->state = tx_done;
3362 defer_bh (dev, skb);
3365 /*-------------------------------------------------------------------------*/
3367 static void usbnet_tx_timeout (struct net_device *net)
3369 struct usbnet *dev = netdev_priv(net);
3371 unlink_urbs (dev, &dev->txq);
3372 tasklet_schedule (&dev->bh);
3374 // FIXME: device recovery -- reset?
3377 /*-------------------------------------------------------------------------*/
3379 static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
3381 struct usbnet *dev = netdev_priv(net);
3383 int retval = NET_XMIT_SUCCESS;
3384 struct urb *urb = NULL;
3385 struct skb_data *entry;
3386 struct driver_info *info = dev->driver_info;
3387 unsigned long flags;
3388 #ifdef CONFIG_USB_NET1080
3389 struct nc_header *header = NULL;
3390 struct nc_trailer *trailer = NULL;
3391 #endif /* CONFIG_USB_NET1080 */
3393 // some devices want funky USB-level framing, for
3394 // win32 driver (usually) and/or hardware quirks
3395 if (info->tx_fixup) {
3396 skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
3398 if (netif_msg_tx_err (dev))
3399 devdbg (dev, "can't tx_fixup skb");
3405 if (!(urb = usb_alloc_urb (0, GFP_ATOMIC))) {
3406 if (netif_msg_tx_err (dev))
3407 devdbg (dev, "no urb");
3411 entry = (struct skb_data *) skb->cb;
3414 entry->state = tx_start;
3415 entry->length = length;
3417 // FIXME: reorganize a bit, so that fixup() fills out NetChip
3418 // framing too. (Packet ID update needs the spinlock...)
3419 // [ BETTER: we already own net->xmit_lock, that's enough ]
3421 #ifdef CONFIG_USB_NET1080
3422 if (info->flags & FLAG_FRAMING_NC) {
3423 header = (struct nc_header *) skb_push (skb, sizeof *header);
3424 header->hdr_len = cpu_to_le16 (sizeof (*header));
3425 header->packet_len = cpu_to_le16 (length);
3426 if (!((skb->len + sizeof *trailer) & 0x01))
3427 *skb_put (skb, 1) = PAD_BYTE;
3428 trailer = (struct nc_trailer *) skb_put (skb, sizeof *trailer);
3430 #endif /* CONFIG_USB_NET1080 */
3432 usb_fill_bulk_urb (urb, dev->udev, dev->out,
3433 skb->data, skb->len, tx_complete, skb);
3434 urb->transfer_flags |= URB_ASYNC_UNLINK;
3436 /* don't assume the hardware handles USB_ZERO_PACKET
3437 * NOTE: strictly conforming cdc-ether devices should expect
3438 * the ZLP here, but ignore the one-byte packet.
3440 * FIXME zero that byte, if it doesn't require a new skb.
3442 if ((length % dev->maxpacket) == 0)
3443 urb->transfer_buffer_length++;
3445 spin_lock_irqsave (&dev->txq.lock, flags);
3447 #ifdef CONFIG_USB_NET1080
3448 if (info->flags & FLAG_FRAMING_NC) {
3449 header->packet_id = cpu_to_le16 ((u16)dev->dev_packet_id++);
3450 put_unaligned (header->packet_id, &trailer->packet_id);
3452 devdbg (dev, "frame >tx h %d p %d id %d",
3453 header->hdr_len, header->packet_len,
3457 #endif /* CONFIG_USB_NET1080 */
3459 switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) {
3461 netif_stop_queue (net);
3462 defer_kevent (dev, EVENT_TX_HALT);
3465 if (netif_msg_tx_err (dev))
3466 devdbg (dev, "tx: submit urb err %d", retval);
3469 net->trans_start = jiffies;
3470 __skb_queue_tail (&dev->txq, skb);
3471 if (dev->txq.qlen >= TX_QLEN (dev))
3472 netif_stop_queue (net);
3474 spin_unlock_irqrestore (&dev->txq.lock, flags);
3477 if (netif_msg_tx_err (dev))
3478 devdbg (dev, "drop, code %d", retval);
3480 retval = NET_XMIT_SUCCESS;
3481 dev->stats.tx_dropped++;
3483 dev_kfree_skb_any (skb);
3485 } else if (netif_msg_tx_queued (dev)) {
3486 devdbg (dev, "> tx, len %d, type 0x%x",
3487 length, skb->protocol);
3493 /*-------------------------------------------------------------------------*/
3495 // tasklet (work deferred from completions, in_irq) or timer
3497 static void usbnet_bh (unsigned long param)
3499 struct usbnet *dev = (struct usbnet *) param;
3500 struct sk_buff *skb;
3501 struct skb_data *entry;
3503 while ((skb = skb_dequeue (&dev->done))) {
3504 entry = (struct skb_data *) skb->cb;
3505 switch (entry->state) {
3507 entry->state = rx_cleanup;
3508 rx_process (dev, skb);
3512 usb_free_urb (entry->urb);
3513 dev_kfree_skb (skb);
3516 devdbg (dev, "bogus skb state %d", entry->state);
3520 // waiting for all pending urbs to complete?
3522 if ((dev->txq.qlen + dev->rxq.qlen + dev->done.qlen) == 0) {
3523 wake_up (dev->wait);
3526 // or are we maybe short a few urbs?
3527 } else if (netif_running (dev->net)
3528 && netif_device_present (dev->net)
3529 && !timer_pending (&dev->delay)
3530 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
3531 int temp = dev->rxq.qlen;
3532 int qlen = RX_QLEN (dev);
3538 // don't refill the queue all at once
3539 for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) {
3540 urb = usb_alloc_urb (0, GFP_ATOMIC);
3542 rx_submit (dev, urb, GFP_ATOMIC);
3544 if (temp != dev->rxq.qlen && netif_msg_link (dev))
3545 devdbg (dev, "rxqlen %d --> %d",
3546 temp, dev->rxq.qlen);
3547 if (dev->rxq.qlen < qlen)
3548 tasklet_schedule (&dev->bh);
3550 if (dev->txq.qlen < TX_QLEN (dev))
3551 netif_wake_queue (dev->net);
3557 /*-------------------------------------------------------------------------
3559 * USB Device Driver support
3561 *-------------------------------------------------------------------------*/
3563 // precondition: never called in_interrupt
3565 static void usbnet_disconnect (struct usb_interface *intf)
3568 struct usb_device *xdev;
3569 struct net_device *net;
3571 dev = usb_get_intfdata(intf);
3572 usb_set_intfdata(intf, NULL);
3576 xdev = interface_to_usbdev (intf);
3578 if (netif_msg_probe (dev))
3579 devinfo (dev, "unregister usbnet usb-%s-%s, %s",
3580 xdev->bus->bus_name, xdev->devpath,
3581 dev->driver_info->description);
3584 unregister_netdev (net);
3586 /* we don't hold rtnl here ... */
3587 flush_scheduled_work ();
3589 if (dev->driver_info->unbind)
3590 dev->driver_info->unbind (dev, intf);
3597 /*-------------------------------------------------------------------------*/
3599 static struct ethtool_ops usbnet_ethtool_ops;
3601 // precondition: never called in_interrupt
3604 usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
3607 struct net_device *net;
3608 struct usb_host_interface *interface;
3609 struct driver_info *info;
3610 struct usb_device *xdev;
3613 info = (struct driver_info *) prod->driver_info;
3615 dev_dbg (&udev->dev, "blacklisted by %s\n", driver_name);
3618 xdev = interface_to_usbdev (udev);
3619 interface = udev->cur_altsetting;
3625 // set up our own records
3626 net = alloc_etherdev(sizeof(*dev));
3628 dbg ("can't kmalloc dev");
3632 dev = netdev_priv(net);
3634 dev->driver_info = info;
3635 dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
3636 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
3637 skb_queue_head_init (&dev->rxq);
3638 skb_queue_head_init (&dev->txq);
3639 skb_queue_head_init (&dev->done);
3640 dev->bh.func = usbnet_bh;
3641 dev->bh.data = (unsigned long) dev;
3642 INIT_WORK (&dev->kevent, kevent, dev);
3643 dev->delay.function = usbnet_bh;
3644 dev->delay.data = (unsigned long) dev;
3645 init_timer (&dev->delay);
3647 SET_MODULE_OWNER (net);
3649 strcpy (net->name, "usb%d");
3650 memcpy (net->dev_addr, node_id, sizeof node_id);
3653 // dma_supported() is deeply broken on almost all architectures
3654 // possible with some EHCI controllers
3655 if (dma_supported (&udev->dev, DMA_64BIT_MASK))
3656 net->features |= NETIF_F_HIGHDMA;
3659 net->change_mtu = usbnet_change_mtu;
3660 net->get_stats = usbnet_get_stats;
3661 net->hard_start_xmit = usbnet_start_xmit;
3662 net->open = usbnet_open;
3663 net->stop = usbnet_stop;
3664 net->watchdog_timeo = TX_TIMEOUT_JIFFIES;
3665 net->tx_timeout = usbnet_tx_timeout;
3666 net->do_ioctl = usbnet_ioctl;
3667 net->ethtool_ops = &usbnet_ethtool_ops;
3669 // allow device-specific bind/init procedures
3670 // NOTE net->name still not usable ...
3672 status = info->bind (dev, udev);
3673 // heuristic: "usb%d" for links we know are two-host,
3674 // else "eth%d" when there's reasonable doubt. userspace
3675 // can rename the link if it knows better.
3676 if ((dev->driver_info->flags & FLAG_ETHER) != 0
3677 && (net->dev_addr [0] & 0x02) == 0)
3678 strcpy (net->name, "eth%d");
3679 } else if (!info->in || info->out)
3680 status = get_endpoints (dev, udev);
3682 dev->in = usb_rcvbulkpipe (xdev, info->in);
3683 dev->out = usb_sndbulkpipe (xdev, info->out);
3684 if (!(info->flags & FLAG_NO_SETINT))
3685 status = usb_set_interface (xdev,
3686 interface->desc.bInterfaceNumber,
3687 interface->desc.bAlternateSetting);
3693 if (status == 0 && dev->status)
3694 status = init_status (dev, udev);
3698 dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
3700 SET_NETDEV_DEV(net, &udev->dev);
3701 status = register_netdev (net);
3704 if (netif_msg_probe (dev))
3705 devinfo (dev, "register usbnet at usb-%s-%s, %s, "
3706 "%02x:%02x:%02x:%02x:%02x:%02x",
3707 xdev->bus->bus_name, xdev->devpath,
3708 dev->driver_info->description,
3709 net->dev_addr [0], net->dev_addr [1],
3710 net->dev_addr [2], net->dev_addr [3],
3711 net->dev_addr [4], net->dev_addr [5]);
3713 // ok, it's ready to go.
3714 usb_set_intfdata (udev, dev);
3716 // start as if the link is up
3717 netif_device_attach (net);
3723 info->unbind (dev, udev);
3731 /*-------------------------------------------------------------------------*/
3735 static int usbnet_suspend (struct usb_interface *intf, u32 state)
3737 struct usbnet *dev = usb_get_intfdata(intf);
3739 netif_device_detach (dev->net);
3743 static int usbnet_resume (struct usb_interface *intf)
3745 struct usbnet *dev = usb_get_intfdata(intf);
3747 netif_device_attach (dev->net);
3751 #else /* !CONFIG_PM */
3753 #define usbnet_suspend NULL
3754 #define usbnet_resume NULL
3756 #endif /* CONFIG_PM */
3758 /*-------------------------------------------------------------------------*/
3760 #ifndef HAVE_HARDWARE
3761 #error You need to configure some hardware for this driver
3765 * chip vendor names won't normally be on the cables, and
3766 * may not be on the device.
3769 static const struct usb_device_id products [] = {
3771 #ifdef CONFIG_USB_ALI_M5632
3773 USB_DEVICE (0x0402, 0x5632), // ALi defaults
3774 .driver_info = (unsigned long) &ali_m5632_info,
3778 #ifdef CONFIG_USB_AN2720
3780 USB_DEVICE (0x0547, 0x2720), // AnchorChips defaults
3781 .driver_info = (unsigned long) &an2720_info,
3783 USB_DEVICE (0x0547, 0x2727), // Xircom PGUNET
3784 .driver_info = (unsigned long) &an2720_info,
3788 #ifdef CONFIG_USB_BELKIN
3790 USB_DEVICE (0x050d, 0x0004), // Belkin
3791 .driver_info = (unsigned long) &belkin_info,
3793 USB_DEVICE (0x056c, 0x8100), // eTEK
3794 .driver_info = (unsigned long) &belkin_info,
3796 USB_DEVICE (0x0525, 0x9901), // Advance USBNET (eTEK)
3797 .driver_info = (unsigned long) &belkin_info,
3801 #ifdef CONFIG_USB_AX8817X
3804 USB_DEVICE (0x077b, 0x2226),
3805 .driver_info = (unsigned long) &ax8817x_info,
3808 USB_DEVICE (0x0846, 0x1040),
3809 .driver_info = (unsigned long) &netgear_fa120_info,
3812 USB_DEVICE (0x2001, 0x1a00),
3813 .driver_info = (unsigned long) &dlink_dub_e100_info,
3815 // Intellinet, ST Lab USB Ethernet
3816 USB_DEVICE (0x0b95, 0x1720),
3817 .driver_info = (unsigned long) &ax8817x_info,
3819 // Hawking UF200, TrendNet TU2-ET100
3820 USB_DEVICE (0x07b8, 0x420a),
3821 .driver_info = (unsigned long) &hawking_uf200_info,
3823 // Billionton Systems, USB2AR
3824 USB_DEVICE (0x08dd, 0x90ff),
3825 .driver_info = (unsigned long) &ax8817x_info,
3828 USB_DEVICE (0x0557, 0x2009),
3829 .driver_info = (unsigned long) &ax8817x_info,
3831 // Buffalo LUA-U2-KTX
3832 USB_DEVICE (0x0411, 0x003d),
3833 .driver_info = (unsigned long) &ax8817x_info,
3835 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
3836 USB_DEVICE (0x6189, 0x182d),
3837 .driver_info = (unsigned long) &ax8817x_info,
3839 // corega FEther USB2-TX
3840 USB_DEVICE (0x07aa, 0x0017),
3841 .driver_info = (unsigned long) &ax8817x_info,
3843 // Surecom EP-1427X-2
3844 USB_DEVICE (0x1189, 0x0893),
3845 .driver_info = (unsigned long) &ax8817x_info,
3847 // goodway corp usb gwusb2e
3848 USB_DEVICE (0x1631, 0x6200),
3849 .driver_info = (unsigned long) &ax8817x_info,
3851 // ASIX AX88772 10/100
3852 USB_DEVICE (0x0b95, 0x7720),
3853 .driver_info = (unsigned long) &ax88772_info,
3857 #ifdef CONFIG_USB_EPSON2888
3859 USB_DEVICE (0x0525, 0x2888), // EPSON USB client
3860 .driver_info = (unsigned long) &epson2888_info,
3864 #ifdef CONFIG_USB_GENESYS
3866 USB_DEVICE (0x05e3, 0x0502), // GL620USB-A
3867 .driver_info = (unsigned long) &genelink_info,
3869 /* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB
3870 * that's half duplex, not currently supported
3874 #ifdef CONFIG_USB_NET1080
3876 USB_DEVICE (0x0525, 0x1080), // NetChip ref design
3877 .driver_info = (unsigned long) &net1080_info,
3879 USB_DEVICE (0x06D0, 0x0622), // Laplink Gold
3880 .driver_info = (unsigned long) &net1080_info,
3884 #ifdef CONFIG_USB_PL2301
3886 USB_DEVICE (0x067b, 0x0000), // PL-2301
3887 .driver_info = (unsigned long) &prolific_info,
3889 USB_DEVICE (0x067b, 0x0001), // PL-2302
3890 .driver_info = (unsigned long) &prolific_info,
3894 #ifdef CONFIG_USB_KC2190
3896 USB_DEVICE (0x050f, 0x0190), // KC-190
3897 .driver_info = (unsigned long) &kc2190_info,
3901 #ifdef CONFIG_USB_RNDIS
3903 /* RNDIS is MSFT's un-official variant of CDC ACM */
3904 USB_INTERFACE_INFO (USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3905 .driver_info = (unsigned long) &rndis_info,
3909 #ifdef CONFIG_USB_ARMLINUX
3911 * SA-1100 using standard ARM Linux kernels, or compatible.
3912 * Often used when talking to Linux PDAs (iPaq, Yopy, etc).
3913 * The sa-1100 "usb-eth" driver handles the basic framing.
3915 * PXA25x or PXA210 ... these use a "usb-eth" driver much like
3916 * the sa1100 one, but hardware uses different endpoint numbers.
3918 * Or the Linux "Ethernet" gadget on hardware that can't talk
3919 * CDC Ethernet (e.g., no altsettings), in either of two modes:
3920 * - acting just like the old "usb-eth" firmware, though
3921 * the implementation is different
3922 * - supporting RNDIS as the first/default configuration for
3923 * MS-Windows interop; Linux needs to use the other config
3926 // 1183 = 0x049F, both used as hex values?
3927 // Compaq "Itsy" vendor/product id
3928 USB_DEVICE (0x049F, 0x505A), // usb-eth, or compatible
3929 .driver_info = (unsigned long) &linuxdev_info,
3931 USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy"
3932 .driver_info = (unsigned long) &yopy_info,
3934 USB_DEVICE (0x8086, 0x07d3), // "blob" bootloader
3935 .driver_info = (unsigned long) &blob_info,
3937 // Linux Ethernet/RNDIS gadget on pxa210/25x/26x
3938 // e.g. Gumstix, current OpenZaurus, ...
3939 USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203),
3940 .driver_info = (unsigned long) &linuxdev_info,
3944 #if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER)
3946 * SA-1100 based Sharp Zaurus ("collie"), or compatible.
3947 * Same idea as above, but different framing.
3949 * PXA-2xx based models are also lying-about-cdc.
3950 * Some models don't even tell the same lies ...
3952 * NOTE: OpenZaurus versions with 2.6 kernels won't use these entries,
3953 * unlike the older ones with 2.4 "embedix" kernels.
3955 * NOTE: These entries do double-duty, serving as blacklist entries
3956 * whenever Zaurus support isn't enabled, but CDC Ethernet is.
3958 #define ZAURUS_MASTER_INTERFACE \
3959 .bInterfaceClass = USB_CLASS_COMM, \
3960 .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
3961 .bInterfaceProtocol = USB_CDC_PROTO_NONE
3963 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3964 | USB_DEVICE_ID_MATCH_DEVICE,
3966 .idProduct = 0x8004,
3967 ZAURUS_MASTER_INTERFACE,
3968 .driver_info = ZAURUS_STRONGARM_INFO,
3970 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3971 | USB_DEVICE_ID_MATCH_DEVICE,
3973 .idProduct = 0x8005, /* A-300 */
3974 ZAURUS_MASTER_INTERFACE,
3975 .driver_info = ZAURUS_PXA_INFO,
3977 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3978 | USB_DEVICE_ID_MATCH_DEVICE,
3980 .idProduct = 0x8006, /* B-500/SL-5600 */
3981 ZAURUS_MASTER_INTERFACE,
3982 .driver_info = ZAURUS_PXA_INFO,
3984 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3985 | USB_DEVICE_ID_MATCH_DEVICE,
3987 .idProduct = 0x8007, /* C-700 */
3988 ZAURUS_MASTER_INTERFACE,
3989 .driver_info = ZAURUS_PXA_INFO,
3991 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3992 | USB_DEVICE_ID_MATCH_DEVICE,
3994 .idProduct = 0x9031, /* C-750 C-760 */
3995 ZAURUS_MASTER_INTERFACE,
3996 .driver_info = ZAURUS_PXA_INFO,
3998 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3999 | USB_DEVICE_ID_MATCH_DEVICE,
4001 .idProduct = 0x9032, /* SL-6000 */
4002 ZAURUS_MASTER_INTERFACE,
4003 .driver_info = ZAURUS_PXA_INFO,
4005 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4006 | USB_DEVICE_ID_MATCH_DEVICE,
4008 /* reported with some C860 units */
4009 .idProduct = 0x9050, /* C-860 */
4010 ZAURUS_MASTER_INTERFACE,
4011 .driver_info = ZAURUS_PXA_INFO,
4012 #ifdef CONFIG_USB_ZAURUS
4013 /* at least some (reports vary) C-860 units have very different
4014 * lies about their standards support.
4017 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4018 | USB_DEVICE_ID_MATCH_DEVICE,
4020 /* reported with some C860 units */
4021 .idProduct = 0x9031, /* C-860 */
4022 .bInterfaceClass = USB_CLASS_COMM,
4023 .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM,
4024 .bInterfaceProtocol = USB_CDC_PROTO_NONE,
4025 .driver_info = (unsigned long) &zaurus_pxa_mdlm_info,
4029 /* Olympus has some models with a Zaurus-compatible option.
4030 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
4033 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4034 | USB_DEVICE_ID_MATCH_DEVICE,
4036 .idProduct = 0x0F02, /* R-1000 */
4037 ZAURUS_MASTER_INTERFACE,
4038 .driver_info = OLYMPUS_MXL_INFO,
4042 #ifdef CONFIG_USB_CDCETHER
4044 /* CDC Ether uses two interfaces, not necessarily consecutive.
4045 * We match the main interface, ignoring the optional device
4046 * class so we could handle devices that aren't exclusively
4049 * NOTE: this match must come AFTER entries working around
4050 * bugs/quirks in a given product (like Zaurus, above).
4052 USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
4053 USB_CDC_PROTO_NONE),
4054 .driver_info = (unsigned long) &cdc_info,
4060 MODULE_DEVICE_TABLE (usb, products);
4062 static struct usb_driver usbnet_driver = {
4063 .owner = THIS_MODULE,
4064 .name = driver_name,
4065 .id_table = products,
4066 .probe = usbnet_probe,
4067 .disconnect = usbnet_disconnect,
4068 .suspend = usbnet_suspend,
4069 .resume = usbnet_resume,
4072 /* Default ethtool_ops assigned. Devices can override in their bind() routine */
4073 static struct ethtool_ops usbnet_ethtool_ops = {
4074 .get_drvinfo = usbnet_get_drvinfo,
4075 .get_link = usbnet_get_link,
4076 .get_msglevel = usbnet_get_msglevel,
4077 .set_msglevel = usbnet_set_msglevel,
4080 /*-------------------------------------------------------------------------*/
4082 static int __init usbnet_init (void)
4084 // compiler should optimize these out
4085 BUG_ON (sizeof (((struct sk_buff *)0)->cb)
4086 < sizeof (struct skb_data));
4087 #ifdef CONFIG_USB_CDCETHER
4088 BUG_ON ((sizeof (((struct usbnet *)0)->data)
4089 < sizeof (struct cdc_state)));
4092 random_ether_addr(node_id);
4094 return usb_register(&usbnet_driver);
4096 module_init (usbnet_init);
4098 static void __exit usbnet_exit (void)
4100 usb_deregister (&usbnet_driver);
4102 module_exit (usbnet_exit);
4104 MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>");
4105 MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)");
4106 MODULE_LICENSE ("GPL");
projects / linux-2.6 / blob