3 * Copyright (C) 2000-2005 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
213 # define EVENT_LINK_RESET 4
216 // device-specific info used by the driver
221 /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
222 #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
223 #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
224 #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
225 #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
227 #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
228 #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
230 #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
232 /* init device ... can sleep, or cause probe() failure */
233 int (*bind)(struct usbnet *, struct usb_interface *);
235 /* cleanup device ... can sleep, but can't fail */
236 void (*unbind)(struct usbnet *, struct usb_interface *);
238 /* reset device ... can sleep */
239 int (*reset)(struct usbnet *);
241 /* see if peer is connected ... can sleep */
242 int (*check_connect)(struct usbnet *);
244 /* for status polling */
245 void (*status)(struct usbnet *, struct urb *);
247 /* link reset handling, called from defer_kevent */
248 int (*link_reset)(struct usbnet *);
250 /* fixup rx packet (strip framing) */
251 int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
253 /* fixup tx packet (add framing) */
254 struct sk_buff *(*tx_fixup)(struct usbnet *dev,
255 struct sk_buff *skb, int flags);
257 // FIXME -- also an interrupt mechanism
258 // useful for at least PL2301/2302 and GL620USB-A
259 // and CDC use them to report 'is it connected' changes
261 /* for new devices, use the descriptor-reading code instead */
262 int in; /* rx endpoint */
263 int out; /* tx endpoint */
265 unsigned long data; /* Misc driver specific data */
268 // we record the state for each of our queued skbs
272 rx_start, rx_done, rx_cleanup
275 struct skb_data { // skb->cb is one of these
278 enum skb_state state;
282 static const char driver_name [] = "usbnet";
284 /* use ethtool to change the level for any given device */
285 static int msg_level = -1;
286 module_param (msg_level, int, 0);
287 MODULE_PARM_DESC (msg_level, "Override default message level");
291 #define devdbg(usbnet, fmt, arg...) \
292 printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
294 #define devdbg(usbnet, fmt, arg...) do {} while(0)
297 #define deverr(usbnet, fmt, arg...) \
298 printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
299 #define devwarn(usbnet, fmt, arg...) \
300 printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
302 #define devinfo(usbnet, fmt, arg...) \
303 printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
305 /*-------------------------------------------------------------------------*/
307 static void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
308 static u32 usbnet_get_link (struct net_device *);
309 static u32 usbnet_get_msglevel (struct net_device *);
310 static void usbnet_set_msglevel (struct net_device *, u32);
311 static void defer_kevent (struct usbnet *, int);
313 /* mostly for PDA style devices, which are always connected if present */
314 static int always_connected (struct usbnet *dev)
319 /* handles CDC Ethernet and many other network "bulk data" interfaces */
321 get_endpoints (struct usbnet *dev, struct usb_interface *intf)
324 struct usb_host_interface *alt = NULL;
325 struct usb_host_endpoint *in = NULL, *out = NULL;
326 struct usb_host_endpoint *status = NULL;
328 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
331 in = out = status = NULL;
332 alt = intf->altsetting + tmp;
334 /* take the first altsetting with in-bulk + out-bulk;
335 * remember any status endpoint, just in case;
336 * ignore other endpoints and altsetttings.
338 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
339 struct usb_host_endpoint *e;
342 e = alt->endpoint + ep;
343 switch (e->desc.bmAttributes) {
344 case USB_ENDPOINT_XFER_INT:
345 if (!(e->desc.bEndpointAddress & USB_DIR_IN))
349 case USB_ENDPOINT_XFER_BULK:
354 if (e->desc.bEndpointAddress & USB_DIR_IN) {
357 else if (intr && !status)
367 if (!alt || !in || !out)
370 if (alt->desc.bAlternateSetting != 0
371 || !(dev->driver_info->flags & FLAG_NO_SETINT)) {
372 tmp = usb_set_interface (dev->udev, alt->desc.bInterfaceNumber,
373 alt->desc.bAlternateSetting);
378 dev->in = usb_rcvbulkpipe (dev->udev,
379 in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
380 dev->out = usb_sndbulkpipe (dev->udev,
381 out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
382 dev->status = status;
386 static void intr_complete (struct urb *urb, struct pt_regs *regs);
388 static int init_status (struct usbnet *dev, struct usb_interface *intf)
395 if (!dev->driver_info->status)
398 pipe = usb_rcvintpipe (dev->udev,
399 dev->status->desc.bEndpointAddress
400 & USB_ENDPOINT_NUMBER_MASK);
401 maxp = usb_maxpacket (dev->udev, pipe, 0);
403 /* avoid 1 msec chatter: min 8 msec poll rate */
404 period = max ((int) dev->status->desc.bInterval,
405 (dev->udev->speed == USB_SPEED_HIGH) ? 7 : 3);
407 buf = kmalloc (maxp, SLAB_KERNEL);
409 dev->interrupt = usb_alloc_urb (0, SLAB_KERNEL);
410 if (!dev->interrupt) {
414 usb_fill_int_urb(dev->interrupt, dev->udev, pipe,
415 buf, maxp, intr_complete, dev, period);
417 "status ep%din, %d bytes period %d\n",
418 usb_pipeendpoint(pipe), maxp, period);
424 static void skb_return (struct usbnet *dev, struct sk_buff *skb)
429 skb->protocol = eth_type_trans (skb, dev->net);
430 dev->stats.rx_packets++;
431 dev->stats.rx_bytes += skb->len;
433 if (netif_msg_rx_status (dev))
434 devdbg (dev, "< rx, len %zu, type 0x%x",
435 skb->len + sizeof (struct ethhdr), skb->protocol);
436 memset (skb->cb, 0, sizeof (struct skb_data));
437 status = netif_rx (skb);
438 if (status != NET_RX_SUCCESS && netif_msg_rx_err (dev))
439 devdbg (dev, "netif_rx status %d", status);
443 #ifdef CONFIG_USB_ALI_M5632
444 #define HAVE_HARDWARE
446 /*-------------------------------------------------------------------------
448 * ALi M5632 driver ... does high speed
450 *-------------------------------------------------------------------------*/
452 static const struct driver_info ali_m5632_info = {
453 .description = "ALi M5632",
460 #ifdef CONFIG_USB_AN2720
461 #define HAVE_HARDWARE
463 /*-------------------------------------------------------------------------
465 * AnchorChips 2720 driver ... http://www.cypress.com
467 * This doesn't seem to have a way to detect whether the peer is
468 * connected, or need any reset handshaking. It's got pretty big
469 * internal buffers (handles most of a frame's worth of data).
470 * Chip data sheets don't describe any vendor control messages.
472 *-------------------------------------------------------------------------*/
474 static const struct driver_info an2720_info = {
475 .description = "AnchorChips/Cypress 2720",
476 // no reset available!
477 // no check_connect available!
479 .in = 2, .out = 2, // direction distinguishes these
482 #endif /* CONFIG_USB_AN2720 */
485 #ifdef CONFIG_USB_AX8817X
486 /* ASIX AX8817X based USB 2.0 Ethernet Devices */
488 #define HAVE_HARDWARE
491 #include <linux/crc32.h>
493 #define AX_CMD_SET_SW_MII 0x06
494 #define AX_CMD_READ_MII_REG 0x07
495 #define AX_CMD_WRITE_MII_REG 0x08
496 #define AX_CMD_SET_HW_MII 0x0a
497 #define AX_CMD_READ_EEPROM 0x0b
498 #define AX_CMD_WRITE_EEPROM 0x0c
499 #define AX_CMD_WRITE_ENABLE 0x0d
500 #define AX_CMD_WRITE_DISABLE 0x0e
501 #define AX_CMD_WRITE_RX_CTL 0x10
502 #define AX_CMD_READ_IPG012 0x11
503 #define AX_CMD_WRITE_IPG0 0x12
504 #define AX_CMD_WRITE_IPG1 0x13
505 #define AX_CMD_WRITE_IPG2 0x14
506 #define AX_CMD_WRITE_MULTI_FILTER 0x16
507 #define AX_CMD_READ_NODE_ID 0x17
508 #define AX_CMD_READ_PHY_ID 0x19
509 #define AX_CMD_READ_MEDIUM_STATUS 0x1a
510 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b
511 #define AX_CMD_READ_MONITOR_MODE 0x1c
512 #define AX_CMD_WRITE_MONITOR_MODE 0x1d
513 #define AX_CMD_WRITE_GPIOS 0x1f
514 #define AX_CMD_SW_RESET 0x20
515 #define AX_CMD_SW_PHY_STATUS 0x21
516 #define AX_CMD_SW_PHY_SELECT 0x22
517 #define AX88772_CMD_READ_NODE_ID 0x13
519 #define AX_MONITOR_MODE 0x01
520 #define AX_MONITOR_LINK 0x02
521 #define AX_MONITOR_MAGIC 0x04
522 #define AX_MONITOR_HSFS 0x10
524 /* AX88172 Medium Status Register values */
525 #define AX_MEDIUM_FULL_DUPLEX 0x02
526 #define AX_MEDIUM_TX_ABORT_ALLOW 0x04
527 #define AX_MEDIUM_FLOW_CONTROL_EN 0x10
529 #define AX_MCAST_FILTER_SIZE 8
530 #define AX_MAX_MCAST 64
532 #define AX_EEPROM_LEN 0x40
534 #define AX_SWRESET_CLEAR 0x00
535 #define AX_SWRESET_RR 0x01
536 #define AX_SWRESET_RT 0x02
537 #define AX_SWRESET_PRTE 0x04
538 #define AX_SWRESET_PRL 0x08
539 #define AX_SWRESET_BZ 0x10
540 #define AX_SWRESET_IPRL 0x20
541 #define AX_SWRESET_IPPD 0x40
543 #define AX88772_IPG0_DEFAULT 0x15
544 #define AX88772_IPG1_DEFAULT 0x0c
545 #define AX88772_IPG2_DEFAULT 0x12
547 #define AX88772_MEDIUM_FULL_DUPLEX 0x0002
548 #define AX88772_MEDIUM_RESERVED 0x0004
549 #define AX88772_MEDIUM_RX_FC_ENABLE 0x0010
550 #define AX88772_MEDIUM_TX_FC_ENABLE 0x0020
551 #define AX88772_MEDIUM_PAUSE_FORMAT 0x0080
552 #define AX88772_MEDIUM_RX_ENABLE 0x0100
553 #define AX88772_MEDIUM_100MB 0x0200
554 #define AX88772_MEDIUM_DEFAULT \
555 (AX88772_MEDIUM_FULL_DUPLEX | AX88772_MEDIUM_RX_FC_ENABLE | \
556 AX88772_MEDIUM_TX_FC_ENABLE | AX88772_MEDIUM_100MB | \
557 AX88772_MEDIUM_RESERVED | AX88772_MEDIUM_RX_ENABLE )
559 #define AX_EEPROM_MAGIC 0xdeadbeef
561 /* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
562 struct ax8817x_data {
563 u8 multi_filter[AX_MCAST_FILTER_SIZE];
566 struct ax88172_int_data {
572 } __attribute__ ((packed));
574 static int ax8817x_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
575 u16 size, void *data)
577 return usb_control_msg(
579 usb_rcvctrlpipe(dev->udev, 0),
581 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
589 static int ax8817x_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
590 u16 size, void *data)
592 return usb_control_msg(
594 usb_sndctrlpipe(dev->udev, 0),
596 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
604 static void ax8817x_async_cmd_callback(struct urb *urb, struct pt_regs *regs)
606 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
609 printk(KERN_DEBUG "ax8817x_async_cmd_callback() failed with %d",
616 static void ax8817x_status(struct usbnet *dev, struct urb *urb)
618 struct ax88172_int_data *event;
621 if (urb->actual_length < 8)
624 event = urb->transfer_buffer;
625 link = event->link & 0x01;
626 if (netif_carrier_ok(dev->net) != link) {
628 netif_carrier_on(dev->net);
629 defer_kevent (dev, EVENT_LINK_RESET );
631 netif_carrier_off(dev->net);
632 devdbg(dev, "ax8817x - Link Status is: %d", link);
636 static void ax8817x_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
637 u16 size, void *data)
639 struct usb_ctrlrequest *req;
643 if ((urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
644 devdbg(dev, "Error allocating URB in write_cmd_async!");
648 if ((req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC)) == NULL) {
649 deverr(dev, "Failed to allocate memory for control request");
654 req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
656 req->wValue = cpu_to_le16(value);
657 req->wIndex = cpu_to_le16(index);
658 req->wLength = cpu_to_le16(size);
660 usb_fill_control_urb(urb, dev->udev,
661 usb_sndctrlpipe(dev->udev, 0),
662 (void *)req, data, size,
663 ax8817x_async_cmd_callback, req);
665 if((status = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
666 deverr(dev, "Error submitting the control message: status=%d", status);
672 static void ax8817x_set_multicast(struct net_device *net)
674 struct usbnet *dev = netdev_priv(net);
675 struct ax8817x_data *data = (struct ax8817x_data *)&dev->data;
678 if (net->flags & IFF_PROMISC) {
680 } else if (net->flags & IFF_ALLMULTI
681 || net->mc_count > AX_MAX_MCAST) {
683 } else if (net->mc_count == 0) {
684 /* just broadcast and directed */
686 /* We use the 20 byte dev->data
687 * for our 8 byte filter buffer
688 * to avoid allocating memory that
689 * is tricky to free later */
690 struct dev_mc_list *mc_list = net->mc_list;
694 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
696 /* Build the multicast hash filter. */
697 for (i = 0; i < net->mc_count; i++) {
700 mc_list->dmi_addr) >> 26;
701 data->multi_filter[crc_bits >> 3] |=
703 mc_list = mc_list->next;
706 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
707 AX_MCAST_FILTER_SIZE, data->multi_filter);
712 ax8817x_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
715 static int ax8817x_mdio_read(struct net_device *netdev, int phy_id, int loc)
717 struct usbnet *dev = netdev_priv(netdev);
721 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
722 ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
723 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
728 static void ax8817x_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
730 struct usbnet *dev = netdev_priv(netdev);
734 ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, &buf);
735 ax8817x_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, (u16 *)&res);
736 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf);
739 static int ax88172_link_reset(struct usbnet *dev)
744 mode = AX_MEDIUM_TX_ABORT_ALLOW | AX_MEDIUM_FLOW_CONTROL_EN;
745 lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA);
746 if (lpa & LPA_DUPLEX)
747 mode |= AX_MEDIUM_FULL_DUPLEX;
748 ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
753 static void ax8817x_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
755 struct usbnet *dev = netdev_priv(net);
758 if (ax8817x_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
759 wolinfo->supported = 0;
760 wolinfo->wolopts = 0;
763 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
764 wolinfo->wolopts = 0;
765 if (opt & AX_MONITOR_MODE) {
766 if (opt & AX_MONITOR_LINK)
767 wolinfo->wolopts |= WAKE_PHY;
768 if (opt & AX_MONITOR_MAGIC)
769 wolinfo->wolopts |= WAKE_MAGIC;
773 static int ax8817x_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
775 struct usbnet *dev = netdev_priv(net);
779 if (wolinfo->wolopts & WAKE_PHY)
780 opt |= AX_MONITOR_LINK;
781 if (wolinfo->wolopts & WAKE_MAGIC)
782 opt |= AX_MONITOR_MAGIC;
784 opt |= AX_MONITOR_MODE;
786 if (ax8817x_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
787 opt, 0, 0, &buf) < 0)
793 static int ax8817x_get_eeprom_len(struct net_device *net)
795 return AX_EEPROM_LEN;
798 static int ax8817x_get_eeprom(struct net_device *net,
799 struct ethtool_eeprom *eeprom, u8 *data)
801 struct usbnet *dev = netdev_priv(net);
802 u16 *ebuf = (u16 *)data;
805 /* Crude hack to ensure that we don't overwrite memory
806 * if an odd length is supplied
811 eeprom->magic = AX_EEPROM_MAGIC;
813 /* ax8817x returns 2 bytes from eeprom on read */
814 for (i=0; i < eeprom->len / 2; i++) {
815 if (ax8817x_read_cmd(dev, AX_CMD_READ_EEPROM,
816 eeprom->offset + i, 0, 2, &ebuf[i]) < 0)
822 static void ax8817x_get_drvinfo (struct net_device *net,
823 struct ethtool_drvinfo *info)
825 /* Inherit standard device info */
826 usbnet_get_drvinfo(net, info);
827 info->eedump_len = 0x3e;
830 static int ax8817x_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
832 struct usbnet *dev = netdev_priv(net);
834 return mii_ethtool_gset(&dev->mii,cmd);
837 static int ax8817x_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
839 struct usbnet *dev = netdev_priv(net);
841 return mii_ethtool_sset(&dev->mii,cmd);
844 /* We need to override some ethtool_ops so we require our
845 own structure so we don't interfere with other usbnet
846 devices that may be connected at the same time. */
847 static struct ethtool_ops ax8817x_ethtool_ops = {
848 .get_drvinfo = ax8817x_get_drvinfo,
849 .get_link = ethtool_op_get_link,
850 .get_msglevel = usbnet_get_msglevel,
851 .set_msglevel = usbnet_set_msglevel,
852 .get_wol = ax8817x_get_wol,
853 .set_wol = ax8817x_set_wol,
854 .get_eeprom_len = ax8817x_get_eeprom_len,
855 .get_eeprom = ax8817x_get_eeprom,
856 .get_settings = ax8817x_get_settings,
857 .set_settings = ax8817x_set_settings,
860 static int ax8817x_bind(struct usbnet *dev, struct usb_interface *intf)
865 unsigned long gpio_bits = dev->driver_info->data;
867 get_endpoints(dev,intf);
869 buf = kmalloc(ETH_ALEN, GFP_KERNEL);
875 /* Toggle the GPIOs in a manufacturer/model specific way */
876 for (i = 2; i >= 0; i--) {
877 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
878 (gpio_bits >> (i * 8)) & 0xff, 0, 0,
884 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x80, 0, 0, buf)) < 0) {
885 dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret);
889 /* Get the MAC address */
890 memset(buf, 0, ETH_ALEN);
891 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, 6, buf)) < 0) {
892 dbg("read AX_CMD_READ_NODE_ID failed: %d", ret);
895 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
898 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
899 dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret);
901 } else if (ret < 2) {
902 /* this should always return 2 bytes */
903 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret);
908 /* Initialize MII structure */
909 dev->mii.dev = dev->net;
910 dev->mii.mdio_read = ax8817x_mdio_read;
911 dev->mii.mdio_write = ax8817x_mdio_write;
912 dev->mii.phy_id_mask = 0x3f;
913 dev->mii.reg_num_mask = 0x1f;
914 dev->mii.phy_id = *((u8 *)buf + 1);
916 dev->net->set_multicast_list = ax8817x_set_multicast;
917 dev->net->ethtool_ops = &ax8817x_ethtool_ops;
919 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
920 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
921 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
922 mii_nway_restart(&dev->mii);
931 static struct ethtool_ops ax88772_ethtool_ops = {
932 .get_drvinfo = ax8817x_get_drvinfo,
933 .get_link = ethtool_op_get_link,
934 .get_msglevel = usbnet_get_msglevel,
935 .set_msglevel = usbnet_set_msglevel,
936 .get_wol = ax8817x_get_wol,
937 .set_wol = ax8817x_set_wol,
938 .get_eeprom_len = ax8817x_get_eeprom_len,
939 .get_eeprom = ax8817x_get_eeprom,
940 .get_settings = ax8817x_get_settings,
941 .set_settings = ax8817x_set_settings,
944 static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
949 get_endpoints(dev,intf);
951 buf = kmalloc(6, GFP_KERNEL);
953 dbg ("Cannot allocate memory for buffer");
958 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_GPIOS,
959 0x00B0, 0, 0, buf)) < 0)
963 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SW_PHY_SELECT, 0x0001, 0, 0, buf)) < 0) {
964 dbg("Select PHY #1 failed: %d", ret);
969 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPPD, 0, 0, buf)) < 0) {
970 dbg("Failed to power down internal PHY: %d", ret);
976 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_CLEAR, 0, 0, buf)) < 0) {
977 dbg("Failed to perform software reset: %d", ret);
983 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
984 dbg("Failed to set Internal/External PHY reset control: %d", ret);
990 ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0000, 0, 0,
992 dbg("Failed to reset RX_CTL: %d", ret);
996 /* Get the MAC address */
997 memset(buf, 0, ETH_ALEN);
998 if ((ret = ax8817x_read_cmd(dev, AX88772_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf)) < 0) {
999 dbg("Failed to read MAC address: %d", ret);
1002 memcpy(dev->net->dev_addr, buf, ETH_ALEN);
1004 if ((ret = ax8817x_write_cmd(dev, AX_CMD_SET_SW_MII, 0, 0, 0, buf)) < 0) {
1005 dbg("Enabling software MII failed: %d", ret);
1010 ax8817x_read_cmd(dev, AX_CMD_READ_MII_REG, 0x0010, 2, 2, buf)) < 0)
1011 || (*((u16 *)buf) != 0x003b)) {
1012 dbg("Read PHY register 2 must be 0x3b00: %d", ret);
1016 /* Initialize MII structure */
1017 dev->mii.dev = dev->net;
1018 dev->mii.mdio_read = ax8817x_mdio_read;
1019 dev->mii.mdio_write = ax8817x_mdio_write;
1020 dev->mii.phy_id_mask = 0xff;
1021 dev->mii.reg_num_mask = 0xff;
1023 /* Get the PHY id */
1024 if ((ret = ax8817x_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf)) < 0) {
1025 dbg("Error reading PHY ID: %02x", ret);
1027 } else if (ret < 2) {
1028 /* this should always return 2 bytes */
1029 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x",
1034 dev->mii.phy_id = *((u8 *)buf + 1);
1037 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_PRL, 0, 0, buf)) < 0) {
1038 dbg("Set external PHY reset pin level: %d", ret);
1043 ax8817x_write_cmd(dev, AX_CMD_SW_RESET, AX_SWRESET_IPRL | AX_SWRESET_PRL, 0, 0, buf)) < 0) {
1044 dbg("Set Internal/External PHY reset control: %d", ret);
1050 dev->net->set_multicast_list = ax8817x_set_multicast;
1051 dev->net->ethtool_ops = &ax88772_ethtool_ops;
1053 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
1054 ax8817x_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
1055 ADVERTISE_ALL | ADVERTISE_CSMA);
1056 mii_nway_restart(&dev->mii);
1058 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, AX88772_MEDIUM_DEFAULT, 0, 0, buf)) < 0) {
1059 dbg("Write medium mode register: %d", ret);
1063 if ((ret = ax8817x_write_cmd(dev, AX_CMD_WRITE_IPG0, AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,AX88772_IPG2_DEFAULT, 0, buf)) < 0) {
1064 dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
1068 ax8817x_write_cmd(dev, AX_CMD_SET_HW_MII, 0, 0, 0, &buf)) < 0) {
1069 dbg("Failed to set hardware MII: %02x", ret);
1073 /* Set RX_CTL to default values with 2k buffer, and enable cactus */
1075 ax8817x_write_cmd(dev, AX_CMD_WRITE_RX_CTL, 0x0088, 0, 0,
1077 dbg("Reset RX_CTL failed: %d", ret);
1091 static int ax88772_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
1095 struct sk_buff *ax_skb;
1098 header = (u32 *) skb->data;
1099 le32_to_cpus(header);
1100 packet = (char *)(header + 1);
1104 while (skb->len > 0) {
1105 if ((short)(*header & 0x0000ffff) !=
1106 ~((short)((*header & 0xffff0000) >> 16))) {
1107 devdbg(dev,"header length data is error");
1109 /* get the packet length */
1110 size = (u16) (*header & 0x0000ffff);
1112 if ((skb->len) - ((size + 1) & 0xfffe) == 0)
1114 if (size > ETH_FRAME_LEN) {
1115 devdbg(dev,"invalid rx length %d", size);
1118 ax_skb = skb_clone(skb, GFP_ATOMIC);
1121 ax_skb->data = packet;
1122 ax_skb->tail = packet + size;
1123 skb_return(dev, ax_skb);
1128 skb_pull(skb, (size + 1) & 0xfffe);
1133 header = (u32 *) skb->data;
1134 le32_to_cpus(header);
1135 packet = (char *)(header + 1);
1140 devdbg(dev,"invalid rx length %d", skb->len);
1146 static struct sk_buff *ax88772_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
1150 int headroom = skb_headroom(skb);
1151 int tailroom = skb_tailroom(skb);
1155 padlen = ((skb->len + 4) % 512) ? 0 : 4;
1157 if ((!skb_cloned(skb))
1158 && ((headroom + tailroom) >= (4 + padlen))) {
1159 if ((headroom < 4) || (tailroom < padlen)) {
1160 skb->data = memmove(skb->head + 4, skb->data, skb->len);
1161 skb->tail = skb->data + skb->len;
1164 struct sk_buff *skb2;
1165 skb2 = skb_copy_expand(skb, 4, padlen, flags);
1166 dev_kfree_skb_any(skb);
1172 packet_len = (u32 *) skb_push(skb, 4);
1174 packet_len = (u32 *) skb->data;
1175 *packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
1177 if ((skb->len % 512) == 0) {
1178 padbytes_ptr = (u32 *) skb->tail;
1179 *padbytes_ptr = 0xffff0000;
1180 skb_put(skb, padlen);
1185 static int ax88772_link_reset(struct usbnet *dev)
1190 mode = AX88772_MEDIUM_DEFAULT;
1191 lpa = ax8817x_mdio_read(dev->net, dev->mii.phy_id, MII_LPA);
1193 if ((lpa & LPA_DUPLEX) == 0)
1194 mode &= ~AX88772_MEDIUM_FULL_DUPLEX;
1195 if ((lpa & LPA_100) == 0)
1196 mode &= ~AX88772_MEDIUM_100MB;
1197 ax8817x_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
1202 static const struct driver_info ax8817x_info = {
1203 .description = "ASIX AX8817x USB 2.0 Ethernet",
1204 .bind = ax8817x_bind,
1205 .status = ax8817x_status,
1206 .link_reset = ax88172_link_reset,
1207 .reset = ax88172_link_reset,
1208 .flags = FLAG_ETHER,
1212 static const struct driver_info dlink_dub_e100_info = {
1213 .description = "DLink DUB-E100 USB Ethernet",
1214 .bind = ax8817x_bind,
1215 .status = ax8817x_status,
1216 .link_reset = ax88172_link_reset,
1217 .reset = ax88172_link_reset,
1218 .flags = FLAG_ETHER,
1222 static const struct driver_info netgear_fa120_info = {
1223 .description = "Netgear FA-120 USB Ethernet",
1224 .bind = ax8817x_bind,
1225 .status = ax8817x_status,
1226 .link_reset = ax88172_link_reset,
1227 .reset = ax88172_link_reset,
1228 .flags = FLAG_ETHER,
1232 static const struct driver_info hawking_uf200_info = {
1233 .description = "Hawking UF200 USB Ethernet",
1234 .bind = ax8817x_bind,
1235 .status = ax8817x_status,
1236 .link_reset = ax88172_link_reset,
1237 .reset = ax88172_link_reset,
1238 .flags = FLAG_ETHER,
1242 static const struct driver_info ax88772_info = {
1243 .description = "ASIX AX88772 USB 2.0 Ethernet",
1244 .bind = ax88772_bind,
1245 .status = ax8817x_status,
1246 .link_reset = ax88772_link_reset,
1247 .reset = ax88772_link_reset,
1248 .flags = FLAG_ETHER | FLAG_FRAMING_AX,
1249 .rx_fixup = ax88772_rx_fixup,
1250 .tx_fixup = ax88772_tx_fixup,
1254 #endif /* CONFIG_USB_AX8817X */
1258 #ifdef CONFIG_USB_BELKIN
1259 #define HAVE_HARDWARE
1261 /*-------------------------------------------------------------------------
1263 * Belkin F5U104 ... two NetChip 2280 devices + Atmel microcontroller
1265 * ... also two eTEK designs, including one sold as "Advance USBNET"
1267 *-------------------------------------------------------------------------*/
1269 static const struct driver_info belkin_info = {
1270 .description = "Belkin, eTEK, or compatible",
1273 #endif /* CONFIG_USB_BELKIN */
1277 /*-------------------------------------------------------------------------
1279 * Communications Device Class declarations.
1280 * Used by CDC Ethernet, and some CDC variants
1282 *-------------------------------------------------------------------------*/
1284 #ifdef CONFIG_USB_CDCETHER
1285 #define NEED_GENERIC_CDC
1288 #ifdef CONFIG_USB_ZAURUS
1289 /* Ethernet variant uses funky framing, broken ethernet addressing */
1290 #define NEED_GENERIC_CDC
1293 #ifdef CONFIG_USB_RNDIS
1294 /* ACM variant uses even funkier framing, complex control RPC scheme */
1295 #define NEED_GENERIC_CDC
1299 #ifdef NEED_GENERIC_CDC
1301 #include <linux/usb_cdc.h>
1304 struct usb_cdc_header_desc *header;
1305 struct usb_cdc_union_desc *u;
1306 struct usb_cdc_ether_desc *ether;
1307 struct usb_interface *control;
1308 struct usb_interface *data;
1311 static struct usb_driver usbnet_driver;
1314 * probes control interface, claims data interface, collects the bulk
1315 * endpoints, activates data interface (if needed), maybe sets MTU.
1316 * all pure cdc, except for certain firmware workarounds.
1318 static int generic_cdc_bind (struct usbnet *dev, struct usb_interface *intf)
1320 u8 *buf = intf->cur_altsetting->extra;
1321 int len = intf->cur_altsetting->extralen;
1322 struct usb_interface_descriptor *d;
1323 struct cdc_state *info = (void *) &dev->data;
1327 if (sizeof dev->data < sizeof *info)
1330 /* expect strict spec conformance for the descriptors, but
1331 * cope with firmware which stores them in the wrong place
1333 if (len == 0 && dev->udev->actconfig->extralen) {
1334 /* Motorola SB4100 (and others: Brad Hards says it's
1335 * from a Broadcom design) put CDC descriptors here
1337 buf = dev->udev->actconfig->extra;
1338 len = dev->udev->actconfig->extralen;
1340 dev_dbg (&intf->dev,
1341 "CDC descriptors on config\n");
1344 /* this assumes that if there's a non-RNDIS vendor variant
1345 * of cdc-acm, it'll fail RNDIS requests cleanly.
1347 rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff);
1349 memset (info, 0, sizeof *info);
1350 info->control = intf;
1352 if (buf [1] != USB_DT_CS_INTERFACE)
1355 /* use bDescriptorSubType to identify the CDC descriptors.
1356 * We expect devices with CDC header and union descriptors.
1357 * For CDC Ethernet we need the ethernet descriptor.
1358 * For RNDIS, ignore two (pointless) CDC modem descriptors
1359 * in favor of a complicated OID-based RPC scheme doing what
1360 * CDC Ethernet achieves with a simple descriptor.
1363 case USB_CDC_HEADER_TYPE:
1365 dev_dbg (&intf->dev, "extra CDC header\n");
1368 info->header = (void *) buf;
1369 if (info->header->bLength != sizeof *info->header) {
1370 dev_dbg (&intf->dev, "CDC header len %u\n",
1371 info->header->bLength);
1375 case USB_CDC_UNION_TYPE:
1377 dev_dbg (&intf->dev, "extra CDC union\n");
1380 info->u = (void *) buf;
1381 if (info->u->bLength != sizeof *info->u) {
1382 dev_dbg (&intf->dev, "CDC union len %u\n",
1387 /* we need a master/control interface (what we're
1388 * probed with) and a slave/data interface; union
1389 * descriptors sort this all out.
1391 info->control = usb_ifnum_to_if(dev->udev,
1392 info->u->bMasterInterface0);
1393 info->data = usb_ifnum_to_if(dev->udev,
1394 info->u->bSlaveInterface0);
1395 if (!info->control || !info->data) {
1396 dev_dbg (&intf->dev,
1397 "master #%u/%p slave #%u/%p\n",
1398 info->u->bMasterInterface0,
1400 info->u->bSlaveInterface0,
1404 if (info->control != intf) {
1405 dev_dbg (&intf->dev, "bogus CDC Union\n");
1406 /* Ambit USB Cable Modem (and maybe others)
1407 * interchanges master and slave interface.
1409 if (info->data == intf) {
1410 info->data = info->control;
1411 info->control = intf;
1416 /* a data interface altsetting does the real i/o */
1417 d = &info->data->cur_altsetting->desc;
1418 if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
1419 dev_dbg (&intf->dev, "slave class %u\n",
1420 d->bInterfaceClass);
1424 case USB_CDC_ETHERNET_TYPE:
1426 dev_dbg (&intf->dev, "extra CDC ether\n");
1429 info->ether = (void *) buf;
1430 if (info->ether->bLength != sizeof *info->ether) {
1431 dev_dbg (&intf->dev, "CDC ether len %u\n",
1435 dev->net->mtu = le16_to_cpup (
1436 &info->ether->wMaxSegmentSize)
1438 /* because of Zaurus, we may be ignoring the host
1439 * side link address we were given.
1444 len -= buf [0]; /* bLength */
1448 if (!info->header || !info->u || (!rndis && !info->ether)) {
1449 dev_dbg (&intf->dev, "missing cdc %s%s%sdescriptor\n",
1450 info->header ? "" : "header ",
1451 info->u ? "" : "union ",
1452 info->ether ? "" : "ether ");
1456 /* claim data interface and set it up ... with side effects.
1457 * network traffic can't flow until an altsetting is enabled.
1459 status = usb_driver_claim_interface (&usbnet_driver, info->data, dev);
1462 status = get_endpoints (dev, info->data);
1464 /* ensure immediate exit from usbnet_disconnect */
1465 usb_set_intfdata(info->data, NULL);
1466 usb_driver_release_interface (&usbnet_driver, info->data);
1470 /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
1472 if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
1473 struct usb_endpoint_descriptor *desc;
1475 dev->status = &info->control->cur_altsetting->endpoint [0];
1476 desc = &dev->status->desc;
1477 if (desc->bmAttributes != USB_ENDPOINT_XFER_INT
1478 || !(desc->bEndpointAddress & USB_DIR_IN)
1479 || (le16_to_cpu(desc->wMaxPacketSize)
1480 < sizeof (struct usb_cdc_notification))
1481 || !desc->bInterval) {
1482 dev_dbg (&intf->dev, "bad notification endpoint\n");
1486 if (rndis && !dev->status) {
1487 dev_dbg (&intf->dev, "missing RNDIS status endpoint\n");
1488 usb_set_intfdata(info->data, NULL);
1489 usb_driver_release_interface (&usbnet_driver, info->data);
1495 dev_info (&dev->udev->dev, "bad CDC descriptors\n");
1499 static void cdc_unbind (struct usbnet *dev, struct usb_interface *intf)
1501 struct cdc_state *info = (void *) &dev->data;
1503 /* disconnect master --> disconnect slave */
1504 if (intf == info->control && info->data) {
1505 /* ensure immediate exit from usbnet_disconnect */
1506 usb_set_intfdata(info->data, NULL);
1507 usb_driver_release_interface (&usbnet_driver, info->data);
1511 /* and vice versa (just in case) */
1512 else if (intf == info->data && info->control) {
1513 /* ensure immediate exit from usbnet_disconnect */
1514 usb_set_intfdata(info->control, NULL);
1515 usb_driver_release_interface (&usbnet_driver, info->control);
1516 info->control = NULL;
1521 static void dumpspeed (struct usbnet *dev, __le32 *speeds)
1523 if (netif_msg_timer (dev))
1524 devinfo (dev, "link speeds: %u kbps up, %u kbps down",
1525 __le32_to_cpu(speeds[0]) / 1000,
1526 __le32_to_cpu(speeds[1]) / 1000);
1529 static void cdc_status (struct usbnet *dev, struct urb *urb)
1531 struct usb_cdc_notification *event;
1533 if (urb->actual_length < sizeof *event)
1536 /* SPEED_CHANGE can get split into two 8-byte packets */
1537 if (test_and_clear_bit (EVENT_STS_SPLIT, &dev->flags)) {
1538 dumpspeed (dev, (__le32 *) urb->transfer_buffer);
1542 event = urb->transfer_buffer;
1543 switch (event->bNotificationType) {
1544 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
1545 if (netif_msg_timer (dev))
1546 devdbg (dev, "CDC: carrier %s",
1547 event->wValue ? "on" : "off");
1549 netif_carrier_on(dev->net);
1551 netif_carrier_off(dev->net);
1553 case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */
1554 if (netif_msg_timer (dev))
1555 devdbg (dev, "CDC: speed change (len %d)",
1556 urb->actual_length);
1557 if (urb->actual_length != (sizeof *event + 8))
1558 set_bit (EVENT_STS_SPLIT, &dev->flags);
1560 dumpspeed (dev, (__le32 *) &event[1]);
1562 // case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: /* RNDIS; or unsolicited */
1564 deverr (dev, "CDC: unexpected notification %02x!",
1565 event->bNotificationType);
1570 #endif /* NEED_GENERIC_CDC */
1573 #ifdef CONFIG_USB_CDCETHER
1574 #define HAVE_HARDWARE
1576 /*-------------------------------------------------------------------------
1578 * Communications Device Class, Ethernet Control model
1580 * Takes two interfaces. The DATA interface is inactive till an altsetting
1581 * is selected. Configuration data includes class descriptors.
1583 * This should interop with whatever the 2.4 "CDCEther.c" driver
1584 * (by Brad Hards) talked with.
1586 *-------------------------------------------------------------------------*/
1588 #include <linux/ctype.h>
1590 static u8 nibble (unsigned char c)
1592 if (likely (isdigit (c)))
1595 if (likely (isxdigit (c)))
1596 return 10 + c - 'A';
1601 get_ethernet_addr (struct usbnet *dev, struct usb_cdc_ether_desc *e)
1604 unsigned char buf [13];
1606 tmp = usb_string (dev->udev, e->iMACAddress, buf, sizeof buf);
1608 dev_dbg (&dev->udev->dev,
1609 "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp);
1614 for (i = tmp = 0; i < 6; i++, tmp += 2)
1615 dev->net->dev_addr [i] =
1616 (nibble (buf [tmp]) << 4) + nibble (buf [tmp + 1]);
1620 static int cdc_bind (struct usbnet *dev, struct usb_interface *intf)
1623 struct cdc_state *info = (void *) &dev->data;
1625 status = generic_cdc_bind (dev, intf);
1629 status = get_ethernet_addr (dev, info->ether);
1631 usb_set_intfdata(info->data, NULL);
1632 usb_driver_release_interface (&usbnet_driver, info->data);
1636 /* FIXME cdc-ether has some multicast code too, though it complains
1637 * in routine cases. info->ether describes the multicast support.
1642 static const struct driver_info cdc_info = {
1643 .description = "CDC Ethernet Device",
1644 .flags = FLAG_ETHER,
1645 // .check_connect = cdc_check_connect,
1647 .unbind = cdc_unbind,
1648 .status = cdc_status,
1651 #endif /* CONFIG_USB_CDCETHER */
1655 #ifdef CONFIG_USB_EPSON2888
1656 #define HAVE_HARDWARE
1658 /*-------------------------------------------------------------------------
1662 * This is the same idea as Linux PDAs (below) except the firmware in the
1663 * device might not be Tux-powered. Epson provides reference firmware that
1664 * implements this interface. Product developers can reuse or modify that
1665 * code, such as by using their own product and vendor codes.
1667 * Support was from Juro Bystricky <bystricky.juro@erd.epson.com>
1669 *-------------------------------------------------------------------------*/
1671 static const struct driver_info epson2888_info = {
1672 .description = "Epson USB Device",
1673 .check_connect = always_connected,
1678 #endif /* CONFIG_USB_EPSON2888 */
1681 #ifdef CONFIG_USB_GENESYS
1682 #define HAVE_HARDWARE
1684 /*-------------------------------------------------------------------------
1686 * GeneSys GL620USB-A (www.genesyslogic.com.tw)
1688 * ... should partially interop with the Win32 driver for this hardware
1689 * The GeneSys docs imply there's some NDIS issue motivating this framing.
1691 * Some info from GeneSys:
1692 * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk.
1693 * (Some cables, like the BAFO-100c, use the half duplex version.)
1694 * - For the full duplex model, the low bit of the version code says
1695 * which side is which ("left/right").
1696 * - For the half duplex type, a control/interrupt handshake settles
1697 * the transfer direction. (That's disabled here, partially coded.)
1698 * A control URB would block until other side writes an interrupt.
1700 * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw>
1701 * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>.
1703 *-------------------------------------------------------------------------*/
1705 // control msg write command
1706 #define GENELINK_CONNECT_WRITE 0xF0
1707 // interrupt pipe index
1708 #define GENELINK_INTERRUPT_PIPE 0x03
1709 // interrupt read buffer size
1710 #define INTERRUPT_BUFSIZE 0x08
1711 // interrupt pipe interval value
1712 #define GENELINK_INTERRUPT_INTERVAL 0x10
1713 // max transmit packet number per transmit
1714 #define GL_MAX_TRANSMIT_PACKETS 32
1715 // max packet length
1716 #define GL_MAX_PACKET_LEN 1514
1717 // max receive buffer size
1718 #define GL_RCV_BUF_SIZE \
1719 (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4)
1723 char packet_data [1];
1728 struct gl_packet packets;
1733 // FIXME: this code is incomplete, not debugged; it doesn't
1734 // handle interrupts correctly. interrupts should be generic
1735 // code like all other device I/O, anyway.
1738 struct urb *irq_urb;
1739 char irq_buf [INTERRUPT_BUFSIZE];
1742 static inline int gl_control_write (struct usbnet *dev, u8 request, u16 value)
1746 retval = usb_control_msg (dev->udev,
1747 usb_sndctrlpipe (dev->udev, 0),
1749 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
1754 CONTROL_TIMEOUT_MS);
1758 static void gl_interrupt_complete (struct urb *urb, struct pt_regs *regs)
1760 int status = urb->status;
1769 /* this urb is terminated, clean up */
1770 dbg("%s - urb shutting down with status: %d",
1771 __FUNCTION__, status);
1774 dbg("%s - nonzero urb status received: %d",
1775 __FUNCTION__, urb->status);
1778 status = usb_submit_urb (urb, GFP_ATOMIC);
1780 err ("%s - usb_submit_urb failed with result %d",
1781 __FUNCTION__, status);
1784 static int gl_interrupt_read (struct usbnet *dev)
1786 struct gl_priv *priv = dev->priv_data;
1789 // issue usb interrupt read
1790 if (priv && priv->irq_urb) {
1792 if ((retval = usb_submit_urb (priv->irq_urb, GFP_KERNEL)) != 0)
1793 dbg ("gl_interrupt_read: submit fail - %X...", retval);
1795 dbg ("gl_interrupt_read: submit success...");
1801 // check whether another side is connected
1802 static int genelink_check_connect (struct usbnet *dev)
1806 dbg ("genelink_check_connect...");
1808 // detect whether another side is connected
1809 if ((retval = gl_control_write (dev, GENELINK_CONNECT_WRITE, 0)) != 0) {
1810 dbg ("%s: genelink_check_connect write fail - %X",
1811 dev->net->name, retval);
1815 // usb interrupt read to ack another side
1816 if ((retval = gl_interrupt_read (dev)) != 0) {
1817 dbg ("%s: genelink_check_connect read fail - %X",
1818 dev->net->name, retval);
1822 dbg ("%s: genelink_check_connect read success", dev->net->name);
1826 // allocate and initialize the private data for genelink
1827 static int genelink_init (struct usbnet *dev)
1829 struct gl_priv *priv;
1831 // allocate the private data structure
1832 if ((priv = kmalloc (sizeof *priv, GFP_KERNEL)) == 0) {
1833 dbg ("%s: cannot allocate private data per device",
1839 if ((priv->irq_urb = usb_alloc_urb (0, GFP_KERNEL)) == 0) {
1840 dbg ("%s: cannot allocate private irq urb per device",
1847 usb_fill_int_urb (priv->irq_urb, dev->udev,
1848 usb_rcvintpipe (dev->udev, GENELINK_INTERRUPT_PIPE),
1849 priv->irq_buf, INTERRUPT_BUFSIZE,
1850 gl_interrupt_complete, 0,
1851 GENELINK_INTERRUPT_INTERVAL);
1853 // set private data pointer
1854 dev->priv_data = priv;
1859 // release the private data
1860 static int genelink_free (struct usbnet *dev)
1862 struct gl_priv *priv = dev->priv_data;
1867 // FIXME: can't cancel here; it's synchronous, and
1868 // should have happened earlier in any case (interrupt
1869 // handling needs to be generic)
1871 // cancel irq urb first
1872 usb_kill_urb (priv->irq_urb);
1875 usb_free_urb (priv->irq_urb);
1877 // free the private data structure
1885 static int genelink_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
1887 struct gl_header *header;
1888 struct gl_packet *packet;
1889 struct sk_buff *gl_skb;
1892 header = (struct gl_header *) skb->data;
1894 // get the packet count of the received skb
1895 le32_to_cpus (&header->packet_count);
1896 if ((header->packet_count > GL_MAX_TRANSMIT_PACKETS)
1897 || (header->packet_count < 0)) {
1898 dbg ("genelink: invalid received packet count %d",
1899 header->packet_count);
1903 // set the current packet pointer to the first packet
1904 packet = &header->packets;
1906 // decrement the length for the packet count size 4 bytes
1909 while (header->packet_count > 1) {
1910 // get the packet length
1911 size = packet->packet_length;
1913 // this may be a broken packet
1914 if (size > GL_MAX_PACKET_LEN) {
1915 dbg ("genelink: invalid rx length %d", size);
1919 // allocate the skb for the individual packet
1920 gl_skb = alloc_skb (size, GFP_ATOMIC);
1923 // copy the packet data to the new skb
1924 memcpy(skb_put(gl_skb, size), packet->packet_data, size);
1925 skb_return (dev, skb);
1928 // advance to the next packet
1929 packet = (struct gl_packet *)
1930 &packet->packet_data [size];
1931 header->packet_count--;
1933 // shift the data pointer to the next gl_packet
1934 skb_pull (skb, size + 4);
1937 // skip the packet length field 4 bytes
1940 if (skb->len > GL_MAX_PACKET_LEN) {
1941 dbg ("genelink: invalid rx length %d", skb->len);
1947 static struct sk_buff *
1948 genelink_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
1951 int length = skb->len;
1952 int headroom = skb_headroom (skb);
1953 int tailroom = skb_tailroom (skb);
1957 // FIXME: magic numbers, bleech
1958 padlen = ((skb->len + (4 + 4*1)) % 64) ? 0 : 1;
1960 if ((!skb_cloned (skb))
1961 && ((headroom + tailroom) >= (padlen + (4 + 4*1)))) {
1962 if ((headroom < (4 + 4*1)) || (tailroom < padlen)) {
1963 skb->data = memmove (skb->head + (4 + 4*1),
1964 skb->data, skb->len);
1965 skb->tail = skb->data + skb->len;
1968 struct sk_buff *skb2;
1969 skb2 = skb_copy_expand (skb, (4 + 4*1) , padlen, flags);
1970 dev_kfree_skb_any (skb);
1976 // attach the packet count to the header
1977 packet_count = (u32 *) skb_push (skb, (4 + 4*1));
1978 packet_len = packet_count + 1;
1980 // FIXME little endian?
1982 *packet_len = length;
1985 if ((skb->len % dev->maxpacket) == 0)
1991 static const struct driver_info genelink_info = {
1992 .description = "Genesys GeneLink",
1993 .flags = FLAG_FRAMING_GL | FLAG_NO_SETINT,
1994 .rx_fixup = genelink_rx_fixup,
1995 .tx_fixup = genelink_tx_fixup,
2000 .check_connect =genelink_check_connect,
2004 #endif /* CONFIG_USB_GENESYS */
2008 #ifdef CONFIG_USB_NET1080
2009 #define HAVE_HARDWARE
2011 /*-------------------------------------------------------------------------
2013 * Netchip 1080 driver ... http://www.netchip.com
2014 * Used in LapLink cables
2016 *-------------------------------------------------------------------------*/
2018 #define dev_packet_id data[0]
2019 #define frame_errors data[1]
2022 * NetChip framing of ethernet packets, supporting additional error
2023 * checks for links that may drop bulk packets from inside messages.
2024 * Odd USB length == always short read for last usb packet.
2026 * - Ethernet header (14 bytes)
2028 * - (optional padding byte, if needed so length becomes odd)
2031 * This framing is to be avoided for non-NetChip devices.
2034 struct nc_header { // packed:
2035 __le16 hdr_len; // sizeof nc_header (LE, all)
2036 __le16 packet_len; // payload size (including ethhdr)
2037 __le16 packet_id; // detects dropped packets
2038 #define MIN_HEADER 6
2040 // all else is optional, and must start with:
2041 // u16 vendorId; // from usb-if
2043 } __attribute__((__packed__));
2045 #define PAD_BYTE ((unsigned char)0xAC)
2049 } __attribute__((__packed__));
2051 // packets may use FLAG_FRAMING_NC and optional pad
2052 #define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
2053 + sizeof (struct ethhdr) \
2056 + sizeof (struct nc_trailer))
2058 #define MIN_FRAMED FRAMED_SIZE(0)
2062 * Zero means no timeout; else, how long a 64 byte bulk packet may be queued
2063 * before the hardware drops it. If that's done, the driver will need to
2064 * frame network packets to guard against the dropped USB packets. The win32
2065 * driver sets this for both sides of the link.
2067 #define NC_READ_TTL_MS ((u8)255) // ms
2070 * We ignore most registers and EEPROM contents.
2072 #define REG_USBCTL ((u8)0x04)
2073 #define REG_TTL ((u8)0x10)
2074 #define REG_STATUS ((u8)0x11)
2077 * Vendor specific requests to read/write data
2079 #define REQUEST_REGISTER ((u8)0x10)
2080 #define REQUEST_EEPROM ((u8)0x11)
2083 nc_vendor_read (struct usbnet *dev, u8 req, u8 regnum, u16 *retval_ptr)
2085 int status = usb_control_msg (dev->udev,
2086 usb_rcvctrlpipe (dev->udev, 0),
2088 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2090 retval_ptr, sizeof *retval_ptr,
2091 CONTROL_TIMEOUT_MS);
2095 le16_to_cpus (retval_ptr);
2100 nc_register_read (struct usbnet *dev, u8 regnum, u16 *retval_ptr)
2102 return nc_vendor_read (dev, REQUEST_REGISTER, regnum, retval_ptr);
2105 // no retval ... can become async, usable in_interrupt()
2107 nc_vendor_write (struct usbnet *dev, u8 req, u8 regnum, u16 value)
2109 usb_control_msg (dev->udev,
2110 usb_sndctrlpipe (dev->udev, 0),
2112 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2114 NULL, 0, // data is in setup packet
2115 CONTROL_TIMEOUT_MS);
2119 nc_register_write (struct usbnet *dev, u8 regnum, u16 value)
2121 nc_vendor_write (dev, REQUEST_REGISTER, regnum, value);
2126 static void nc_dump_registers (struct usbnet *dev)
2129 u16 *vp = kmalloc (sizeof (u16));
2136 dbg ("%s registers:", dev->net->name);
2137 for (reg = 0; reg < 0x20; reg++) {
2140 // reading some registers is trouble
2141 if (reg >= 0x08 && reg <= 0xf)
2143 if (reg >= 0x12 && reg <= 0x1e)
2146 retval = nc_register_read (dev, reg, vp);
2148 dbg ("%s reg [0x%x] ==> error %d",
2149 dev->net->name, reg, retval);
2151 dbg ("%s reg [0x%x] = 0x%x",
2152 dev->net->name, reg, *vp);
2159 /*-------------------------------------------------------------------------*/
2165 #define USBCTL_WRITABLE_MASK 0x1f0f
2166 // bits 15-13 reserved, r/o
2167 #define USBCTL_ENABLE_LANG (1 << 12)
2168 #define USBCTL_ENABLE_MFGR (1 << 11)
2169 #define USBCTL_ENABLE_PROD (1 << 10)
2170 #define USBCTL_ENABLE_SERIAL (1 << 9)
2171 #define USBCTL_ENABLE_DEFAULTS (1 << 8)
2172 // bits 7-4 reserved, r/o
2173 #define USBCTL_FLUSH_OTHER (1 << 3)
2174 #define USBCTL_FLUSH_THIS (1 << 2)
2175 #define USBCTL_DISCONN_OTHER (1 << 1)
2176 #define USBCTL_DISCONN_THIS (1 << 0)
2178 static inline void nc_dump_usbctl (struct usbnet *dev, u16 usbctl)
2180 if (!netif_msg_link (dev))
2182 devdbg (dev, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
2184 " other%s%s; r/o 0x%x",
2185 dev->udev->bus->bus_name, dev->udev->devpath,
2187 (usbctl & USBCTL_ENABLE_LANG) ? " lang" : "",
2188 (usbctl & USBCTL_ENABLE_MFGR) ? " mfgr" : "",
2189 (usbctl & USBCTL_ENABLE_PROD) ? " prod" : "",
2190 (usbctl & USBCTL_ENABLE_SERIAL) ? " serial" : "",
2191 (usbctl & USBCTL_ENABLE_DEFAULTS) ? " defaults" : "",
2193 (usbctl & USBCTL_FLUSH_OTHER) ? " FLUSH" : "",
2194 (usbctl & USBCTL_DISCONN_OTHER) ? " DIS" : "",
2195 (usbctl & USBCTL_FLUSH_THIS) ? " FLUSH" : "",
2196 (usbctl & USBCTL_DISCONN_THIS) ? " DIS" : "",
2197 usbctl & ~USBCTL_WRITABLE_MASK
2201 /*-------------------------------------------------------------------------*/
2207 #define STATUS_PORT_A (1 << 15)
2209 #define STATUS_CONN_OTHER (1 << 14)
2210 #define STATUS_SUSPEND_OTHER (1 << 13)
2211 #define STATUS_MAILBOX_OTHER (1 << 12)
2212 #define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03)
2214 #define STATUS_CONN_THIS (1 << 6)
2215 #define STATUS_SUSPEND_THIS (1 << 5)
2216 #define STATUS_MAILBOX_THIS (1 << 4)
2217 #define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03)
2219 #define STATUS_UNSPEC_MASK 0x0c8c
2220 #define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK))
2223 static inline void nc_dump_status (struct usbnet *dev, u16 status)
2225 if (!netif_msg_link (dev))
2227 devdbg (dev, "net1080 %s-%s status 0x%x:"
2228 " this (%c) PKT=%d%s%s%s;"
2229 " other PKT=%d%s%s%s; unspec 0x%x",
2230 dev->udev->bus->bus_name, dev->udev->devpath,
2233 // XXX the packet counts don't seem right
2234 // (1 at reset, not 0); maybe UNSPEC too
2236 (status & STATUS_PORT_A) ? 'A' : 'B',
2237 STATUS_PACKETS_THIS (status),
2238 (status & STATUS_CONN_THIS) ? " CON" : "",
2239 (status & STATUS_SUSPEND_THIS) ? " SUS" : "",
2240 (status & STATUS_MAILBOX_THIS) ? " MBOX" : "",
2242 STATUS_PACKETS_OTHER (status),
2243 (status & STATUS_CONN_OTHER) ? " CON" : "",
2244 (status & STATUS_SUSPEND_OTHER) ? " SUS" : "",
2245 (status & STATUS_MAILBOX_OTHER) ? " MBOX" : "",
2247 status & STATUS_UNSPEC_MASK
2251 /*-------------------------------------------------------------------------*/
2257 #define TTL_THIS(ttl) (0x00ff & ttl)
2258 #define TTL_OTHER(ttl) (0x00ff & (ttl >> 8))
2259 #define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this))))
2261 static inline void nc_dump_ttl (struct usbnet *dev, u16 ttl)
2263 if (netif_msg_link (dev))
2264 devdbg (dev, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
2265 dev->udev->bus->bus_name, dev->udev->devpath,
2266 ttl, TTL_THIS (ttl), TTL_OTHER (ttl));
2269 /*-------------------------------------------------------------------------*/
2271 static int net1080_reset (struct usbnet *dev)
2273 u16 usbctl, status, ttl;
2274 u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
2280 // nc_dump_registers (dev);
2282 if ((retval = nc_register_read (dev, REG_STATUS, vp)) < 0) {
2283 dbg ("can't read %s-%s status: %d",
2284 dev->udev->bus->bus_name, dev->udev->devpath, retval);
2288 nc_dump_status (dev, status);
2290 if ((retval = nc_register_read (dev, REG_USBCTL, vp)) < 0) {
2291 dbg ("can't read USBCTL, %d", retval);
2295 nc_dump_usbctl (dev, usbctl);
2297 nc_register_write (dev, REG_USBCTL,
2298 USBCTL_FLUSH_THIS | USBCTL_FLUSH_OTHER);
2300 if ((retval = nc_register_read (dev, REG_TTL, vp)) < 0) {
2301 dbg ("can't read TTL, %d", retval);
2305 // nc_dump_ttl (dev, ttl);
2307 nc_register_write (dev, REG_TTL,
2308 MK_TTL (NC_READ_TTL_MS, TTL_OTHER (ttl)) );
2309 dbg ("%s: assigned TTL, %d ms", dev->net->name, NC_READ_TTL_MS);
2311 if (netif_msg_link (dev))
2312 devinfo (dev, "port %c, peer %sconnected",
2313 (status & STATUS_PORT_A) ? 'A' : 'B',
2314 (status & STATUS_CONN_OTHER) ? "" : "dis"
2323 static int net1080_check_connect (struct usbnet *dev)
2327 u16 *vp = kmalloc (sizeof (u16), GFP_KERNEL);
2331 retval = nc_register_read (dev, REG_STATUS, vp);
2335 dbg ("%s net1080_check_conn read - %d", dev->net->name, retval);
2338 if ((status & STATUS_CONN_OTHER) != STATUS_CONN_OTHER)
2343 static void nc_flush_complete (struct urb *urb, struct pt_regs *regs)
2345 kfree (urb->context);
2349 static void nc_ensure_sync (struct usbnet *dev)
2351 dev->frame_errors++;
2352 if (dev->frame_errors > 5) {
2354 struct usb_ctrlrequest *req;
2358 urb = usb_alloc_urb (0, SLAB_ATOMIC);
2362 req = kmalloc (sizeof *req, GFP_ATOMIC);
2368 req->bRequestType = USB_DIR_OUT
2371 req->bRequest = REQUEST_REGISTER;
2372 req->wValue = cpu_to_le16 (USBCTL_FLUSH_THIS
2373 | USBCTL_FLUSH_OTHER);
2374 req->wIndex = cpu_to_le16 (REG_USBCTL);
2375 req->wLength = cpu_to_le16 (0);
2377 /* queue an async control request, we don't need
2378 * to do anything when it finishes except clean up.
2380 usb_fill_control_urb (urb, dev->udev,
2381 usb_sndctrlpipe (dev->udev, 0),
2382 (unsigned char *) req,
2384 nc_flush_complete, req);
2385 status = usb_submit_urb (urb, GFP_ATOMIC);
2392 if (netif_msg_rx_err (dev))
2393 devdbg (dev, "flush net1080; too many framing errors");
2394 dev->frame_errors = 0;
2398 static int net1080_rx_fixup (struct usbnet *dev, struct sk_buff *skb)
2400 struct nc_header *header;
2401 struct nc_trailer *trailer;
2402 u16 hdr_len, packet_len;
2404 if (!(skb->len & 0x01)
2405 || MIN_FRAMED > skb->len
2406 || skb->len > FRAMED_SIZE (dev->net->mtu)) {
2407 dev->stats.rx_frame_errors++;
2408 dbg ("rx framesize %d range %d..%d mtu %d", skb->len,
2409 (int)MIN_FRAMED, (int)FRAMED_SIZE (dev->net->mtu),
2411 nc_ensure_sync (dev);
2415 header = (struct nc_header *) skb->data;
2416 hdr_len = le16_to_cpup (&header->hdr_len);
2417 packet_len = le16_to_cpup (&header->packet_len);
2418 if (FRAMED_SIZE (packet_len) > MAX_PACKET) {
2419 dev->stats.rx_frame_errors++;
2420 dbg ("packet too big, %d", packet_len);
2421 nc_ensure_sync (dev);
2423 } else if (hdr_len < MIN_HEADER) {
2424 dev->stats.rx_frame_errors++;
2425 dbg ("header too short, %d", hdr_len);
2426 nc_ensure_sync (dev);
2428 } else if (hdr_len > MIN_HEADER) {
2429 // out of band data for us?
2430 dbg ("header OOB, %d bytes", hdr_len - MIN_HEADER);
2431 nc_ensure_sync (dev);
2432 // switch (vendor/product ids) { ... }
2434 skb_pull (skb, hdr_len);
2436 trailer = (struct nc_trailer *)
2437 (skb->data + skb->len - sizeof *trailer);
2438 skb_trim (skb, skb->len - sizeof *trailer);
2440 if ((packet_len & 0x01) == 0) {
2441 if (skb->data [packet_len] != PAD_BYTE) {
2442 dev->stats.rx_frame_errors++;
2446 skb_trim (skb, skb->len - 1);
2448 if (skb->len != packet_len) {
2449 dev->stats.rx_frame_errors++;
2450 dbg ("bad packet len %d (expected %d)",
2451 skb->len, packet_len);
2452 nc_ensure_sync (dev);
2455 if (header->packet_id != get_unaligned (&trailer->packet_id)) {
2456 dev->stats.rx_fifo_errors++;
2457 dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
2458 le16_to_cpu (header->packet_id),
2459 le16_to_cpu (trailer->packet_id));
2463 devdbg (dev, "frame <rx h %d p %d id %d", header->hdr_len,
2464 header->packet_len, header->packet_id);
2466 dev->frame_errors = 0;
2470 static struct sk_buff *
2471 net1080_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
2474 struct sk_buff *skb2;
2476 padlen = ((skb->len + sizeof (struct nc_header)
2477 + sizeof (struct nc_trailer)) & 0x01) ? 0 : 1;
2478 if (!skb_cloned (skb)) {
2479 int headroom = skb_headroom (skb);
2480 int tailroom = skb_tailroom (skb);
2482 if ((padlen + sizeof (struct nc_trailer)) <= tailroom
2483 && sizeof (struct nc_header) <= headroom)
2484 /* There's enough head and tail room */
2487 if ((sizeof (struct nc_header) + padlen
2488 + sizeof (struct nc_trailer)) <
2489 (headroom + tailroom)) {
2490 /* There's enough total room, so just readjust */
2491 skb->data = memmove (skb->head
2492 + sizeof (struct nc_header),
2493 skb->data, skb->len);
2494 skb->tail = skb->data + skb->len;
2499 /* Create a new skb to use with the correct size */
2500 skb2 = skb_copy_expand (skb,
2501 sizeof (struct nc_header),
2502 sizeof (struct nc_trailer) + padlen,
2504 dev_kfree_skb_any (skb);
2508 static const struct driver_info net1080_info = {
2509 .description = "NetChip TurboCONNECT",
2510 .flags = FLAG_FRAMING_NC,
2511 .reset = net1080_reset,
2512 .check_connect =net1080_check_connect,
2513 .rx_fixup = net1080_rx_fixup,
2514 .tx_fixup = net1080_tx_fixup,
2517 #endif /* CONFIG_USB_NET1080 */
2521 #ifdef CONFIG_USB_PL2301
2522 #define HAVE_HARDWARE
2524 /*-------------------------------------------------------------------------
2526 * Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com
2528 * The protocol and handshaking used here should be bug-compatible
2529 * with the Linux 2.2 "plusb" driver, by Deti Fliegl.
2531 *-------------------------------------------------------------------------*/
2534 * Bits 0-4 can be used for software handshaking; they're set from
2535 * one end, cleared from the other, "read" with the interrupt byte.
2537 #define PL_S_EN (1<<7) /* (feature only) suspend enable */
2538 /* reserved bit -- rx ready (6) ? */
2539 #define PL_TX_READY (1<<5) /* (interrupt only) transmit ready */
2540 #define PL_RESET_OUT (1<<4) /* reset output pipe */
2541 #define PL_RESET_IN (1<<3) /* reset input pipe */
2542 #define PL_TX_C (1<<2) /* transmission complete */
2543 #define PL_TX_REQ (1<<1) /* transmission received */
2544 #define PL_PEER_E (1<<0) /* peer exists */
2547 pl_vendor_req (struct usbnet *dev, u8 req, u8 val, u8 index)
2549 return usb_control_msg (dev->udev,
2550 usb_rcvctrlpipe (dev->udev, 0),
2552 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2555 CONTROL_TIMEOUT_MS);
2559 pl_clear_QuickLink_features (struct usbnet *dev, int val)
2561 return pl_vendor_req (dev, 1, (u8) val, 0);
2565 pl_set_QuickLink_features (struct usbnet *dev, int val)
2567 return pl_vendor_req (dev, 3, (u8) val, 0);
2570 /*-------------------------------------------------------------------------*/
2572 static int pl_reset (struct usbnet *dev)
2574 /* some units seem to need this reset, others reject it utterly.
2575 * FIXME be more like "naplink" or windows drivers.
2577 (void) pl_set_QuickLink_features (dev,
2578 PL_S_EN|PL_RESET_OUT|PL_RESET_IN|PL_PEER_E);
2582 static const struct driver_info prolific_info = {
2583 .description = "Prolific PL-2301/PL-2302",
2584 .flags = FLAG_NO_SETINT,
2585 /* some PL-2302 versions seem to fail usb_set_interface() */
2589 #endif /* CONFIG_USB_PL2301 */
2592 #ifdef CONFIG_USB_KC2190
2593 #define HAVE_HARDWARE
2594 static const struct driver_info kc2190_info = {
2595 .description = "KC Technology KC-190",
2597 #endif /* CONFIG_USB_KC2190 */
2600 #ifdef CONFIG_USB_ARMLINUX
2601 #define HAVE_HARDWARE
2603 /*-------------------------------------------------------------------------
2605 * Intel's SA-1100 chip integrates basic USB support, and is used
2606 * in PDAs like some iPaqs, the Yopy, some Zaurus models, and more.
2607 * When they run Linux, arch/arm/mach-sa1100/usb-eth.c may be used to
2608 * network using minimal USB framing data.
2610 * This describes the driver currently in standard ARM Linux kernels.
2611 * The Zaurus uses a different driver (see later).
2613 * PXA25x and PXA210 use XScale cores (ARM v5TE) with better USB support
2614 * and different USB endpoint numbering than the SA1100 devices. The
2615 * mach-pxa/usb-eth.c driver re-uses the device ids from mach-sa1100
2616 * so we rely on the endpoint descriptors.
2618 *-------------------------------------------------------------------------*/
2620 static const struct driver_info linuxdev_info = {
2621 .description = "Linux Device",
2622 .check_connect = always_connected,
2625 static const struct driver_info yopy_info = {
2626 .description = "Yopy",
2627 .check_connect = always_connected,
2630 static const struct driver_info blob_info = {
2631 .description = "Boot Loader OBject",
2632 .check_connect = always_connected,
2635 #endif /* CONFIG_USB_ARMLINUX */
2638 #ifdef CONFIG_USB_ZAURUS
2639 #define HAVE_HARDWARE
2641 #include <linux/crc32.h>
2643 /*-------------------------------------------------------------------------
2645 * Zaurus is also a SA-1110 based PDA, but one using a different driver
2646 * (and framing) for its USB slave/gadget controller than the case above.
2648 * For the current version of that driver, the main way that framing is
2649 * nonstandard (also from perspective of the CDC ethernet model!) is a
2650 * crc32, added to help detect when some sa1100 usb-to-memory DMA errata
2651 * haven't been fully worked around. Also, all Zaurii use the same
2652 * default Ethernet address.
2654 * PXA based models use the same framing, and also can't implement
2655 * set_interface properly.
2657 * All known Zaurii lie about their standards conformance. Most lie by
2658 * saying they support CDC Ethernet. Some lie and say they support CDC
2659 * MDLM (as if for access to cell phone modems). Someone, please beat
2660 * on Sharp (and other such vendors) for a while with a cluestick.
2662 *-------------------------------------------------------------------------*/
2664 static struct sk_buff *
2665 zaurus_tx_fixup (struct usbnet *dev, struct sk_buff *skb, int flags)
2668 struct sk_buff *skb2;
2671 if (!skb_cloned (skb)) {
2672 int tailroom = skb_tailroom (skb);
2673 if ((padlen + 4) <= tailroom)
2676 skb2 = skb_copy_expand (skb, 0, 4 + padlen, flags);
2677 dev_kfree_skb_any (skb);
2682 fcs = crc32_le (~0, skb->data, skb->len);
2685 *skb_put (skb, 1) = fcs & 0xff;
2686 *skb_put (skb, 1) = (fcs>> 8) & 0xff;
2687 *skb_put (skb, 1) = (fcs>>16) & 0xff;
2688 *skb_put (skb, 1) = (fcs>>24) & 0xff;
2693 static const struct driver_info zaurus_sl5x00_info = {
2694 .description = "Sharp Zaurus SL-5x00",
2695 .flags = FLAG_FRAMING_Z,
2696 .check_connect = always_connected,
2697 .bind = generic_cdc_bind,
2698 .unbind = cdc_unbind,
2699 .tx_fixup = zaurus_tx_fixup,
2701 #define ZAURUS_STRONGARM_INFO ((unsigned long)&zaurus_sl5x00_info)
2703 static const struct driver_info zaurus_pxa_info = {
2704 .description = "Sharp Zaurus, PXA-2xx based",
2705 .flags = FLAG_FRAMING_Z,
2706 .check_connect = always_connected,
2707 .bind = generic_cdc_bind,
2708 .unbind = cdc_unbind,
2709 .tx_fixup = zaurus_tx_fixup,
2711 #define ZAURUS_PXA_INFO ((unsigned long)&zaurus_pxa_info)
2713 static const struct driver_info olympus_mxl_info = {
2714 .description = "Olympus R1000",
2715 .flags = FLAG_FRAMING_Z,
2716 .check_connect = always_connected,
2717 .bind = generic_cdc_bind,
2718 .unbind = cdc_unbind,
2719 .tx_fixup = zaurus_tx_fixup,
2721 #define OLYMPUS_MXL_INFO ((unsigned long)&olympus_mxl_info)
2724 /* Some more recent products using Lineo/Belcarra code will wrongly claim
2725 * CDC MDLM conformance. They aren't conformant: data endpoints live
2726 * in the control interface, there's no data interface, and it's not used
2727 * to talk to a cell phone radio. But at least we can detect these two
2728 * pseudo-classes, rather than growing this product list with entries for
2729 * each new nonconformant product (sigh).
2731 static const u8 safe_guid[16] = {
2732 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6,
2733 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f,
2735 static const u8 blan_guid[16] = {
2736 0x74, 0xf0, 0x3d, 0xbd, 0x1e, 0xc1, 0x44, 0x70,
2737 0xa3, 0x67, 0x71, 0x34, 0xc9, 0xf5, 0x54, 0x37,
2740 static int blan_mdlm_bind (struct usbnet *dev, struct usb_interface *intf)
2742 u8 *buf = intf->cur_altsetting->extra;
2743 int len = intf->cur_altsetting->extralen;
2744 struct usb_cdc_mdlm_desc *desc = NULL;
2745 struct usb_cdc_mdlm_detail_desc *detail = NULL;
2748 if (buf [1] != USB_DT_CS_INTERFACE)
2751 /* use bDescriptorSubType, and just verify that we get a
2752 * "BLAN" (or "SAFE") descriptor.
2755 case USB_CDC_MDLM_TYPE:
2757 dev_dbg (&intf->dev, "extra MDLM\n");
2760 desc = (void *) buf;
2761 if (desc->bLength != sizeof *desc) {
2762 dev_dbg (&intf->dev, "MDLM len %u\n",
2766 /* expect bcdVersion 1.0, ignore */
2767 if (memcmp(&desc->bGUID, blan_guid, 16)
2768 || memcmp(&desc->bGUID, blan_guid, 16) ) {
2769 /* hey, this one might _really_ be MDLM! */
2770 dev_dbg (&intf->dev, "MDLM guid\n");
2774 case USB_CDC_MDLM_DETAIL_TYPE:
2776 dev_dbg (&intf->dev, "extra MDLM detail\n");
2779 detail = (void *) buf;
2780 switch (detail->bGuidDescriptorType) {
2781 case 0: /* "SAFE" */
2782 if (detail->bLength != (sizeof *detail + 2))
2785 case 1: /* "BLAN" */
2786 if (detail->bLength != (sizeof *detail + 3))
2793 /* assuming we either noticed BLAN already, or will
2794 * find it soon, there are some data bytes here:
2795 * - bmNetworkCapabilities (unused)
2796 * - bmDataCapabilities (bits, see below)
2797 * - bPad (ignored, for PADAFTER -- BLAN-only)
2799 * - 0x01 -- Zaurus framing (add CRC)
2800 * - 0x02 -- PADBEFORE
2801 * - 0x04 -- PADAFTER
2802 * - 0x08 -- "fermat" packet mangling (for hw bugs)
2804 if (detail->bDetailData[1] != 0x01) {
2805 /* bmDataCapabilites == 0 would be fine too,
2806 * but framing is minidriver-coupled for now.
2809 dev_dbg (&intf->dev,
2810 "bad MDLM detail, %d %d %d\n",
2812 detail->bDetailData[0],
2813 detail->bDetailData[2]);
2819 len -= buf [0]; /* bLength */
2823 if (!desc || !detail) {
2824 dev_dbg (&intf->dev, "missing cdc mdlm %s%sdescriptor\n",
2825 desc ? "" : "func ",
2826 detail ? "" : "detail ");
2830 /* There's probably a CDC Ethernet descriptor there, but we can't
2831 * rely on the Ethernet address it provides since not all vendors
2832 * bother to make it unique. Likewise there's no point in tracking
2833 * of the CDC event notifications.
2835 return get_endpoints (dev, intf);
2838 dev_info (&dev->udev->dev, "unsupported MDLM descriptors\n");
2842 static const struct driver_info bogus_mdlm_info = {
2843 .description = "pseudo-MDLM (BLAN) device",
2844 .flags = FLAG_FRAMING_Z,
2845 .check_connect = always_connected,
2846 .tx_fixup = zaurus_tx_fixup,
2847 .bind = blan_mdlm_bind,
2852 /* blacklist all those devices */
2853 #define ZAURUS_STRONGARM_INFO 0
2854 #define ZAURUS_PXA_INFO 0
2855 #define OLYMPUS_MXL_INFO 0
2860 /*-------------------------------------------------------------------------
2862 * Network Device Driver (peer link to "Host Device", from USB host)
2864 *-------------------------------------------------------------------------*/
2866 static int usbnet_change_mtu (struct net_device *net, int new_mtu)
2868 struct usbnet *dev = netdev_priv(net);
2870 if (new_mtu <= MIN_PACKET || new_mtu > MAX_PACKET)
2872 #ifdef CONFIG_USB_NET1080
2873 if (((dev->driver_info->flags) & FLAG_FRAMING_NC)) {
2874 if (FRAMED_SIZE (new_mtu) > MAX_PACKET)
2878 #ifdef CONFIG_USB_GENESYS
2879 if (((dev->driver_info->flags) & FLAG_FRAMING_GL)
2880 && new_mtu > GL_MAX_PACKET_LEN)
2883 // no second zero-length packet read wanted after mtu-sized packets
2884 if (((new_mtu + sizeof (struct ethhdr)) % dev->maxpacket) == 0)
2890 /*-------------------------------------------------------------------------*/
2892 static struct net_device_stats *usbnet_get_stats (struct net_device *net)
2894 struct usbnet *dev = netdev_priv(net);
2898 /*-------------------------------------------------------------------------*/
2900 /* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from
2901 * completion callbacks. 2.5 should have fixed those bugs...
2904 static void defer_bh (struct usbnet *dev, struct sk_buff *skb)
2906 struct sk_buff_head *list = skb->list;
2907 unsigned long flags;
2909 spin_lock_irqsave (&list->lock, flags);
2910 __skb_unlink (skb, list);
2911 spin_unlock (&list->lock);
2912 spin_lock (&dev->done.lock);
2913 __skb_queue_tail (&dev->done, skb);
2914 if (dev->done.qlen == 1)
2915 tasklet_schedule (&dev->bh);
2916 spin_unlock_irqrestore (&dev->done.lock, flags);
2919 /* some work can't be done in tasklets, so we use keventd
2921 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
2922 * but tasklet_schedule() doesn't. hope the failure is rare.
2924 static void defer_kevent (struct usbnet *dev, int work)
2926 set_bit (work, &dev->flags);
2927 if (!schedule_work (&dev->kevent))
2928 deverr (dev, "kevent %d may have been dropped", work);
2930 devdbg (dev, "kevent %d scheduled", work);
2933 /*-------------------------------------------------------------------------*/
2935 static void rx_complete (struct urb *urb, struct pt_regs *regs);
2937 static void rx_submit (struct usbnet *dev, struct urb *urb, int flags)
2939 struct sk_buff *skb;
2940 struct skb_data *entry;
2942 unsigned long lockflags;
2945 #ifdef CONFIG_USB_NET1080
2946 if (dev->driver_info->flags & FLAG_FRAMING_NC)
2947 size = FRAMED_SIZE (dev->net->mtu);
2950 #ifdef CONFIG_USB_GENESYS
2951 if (dev->driver_info->flags & FLAG_FRAMING_GL)
2952 size = GL_RCV_BUF_SIZE;
2955 #ifdef CONFIG_USB_ZAURUS
2956 if (dev->driver_info->flags & FLAG_FRAMING_Z)
2957 size = 6 + (sizeof (struct ethhdr) + dev->net->mtu);
2960 #ifdef CONFIG_USB_RNDIS
2961 if (dev->driver_info->flags & FLAG_FRAMING_RN)
2962 size = RNDIS_MAX_TRANSFER;
2965 #ifdef CONFIG_USB_AX8817X
2966 if (dev->driver_info->flags & FLAG_FRAMING_AX)
2970 size = (sizeof (struct ethhdr) + dev->net->mtu);
2972 if ((skb = alloc_skb (size + NET_IP_ALIGN, flags)) == NULL) {
2973 if (netif_msg_rx_err (dev))
2974 devdbg (dev, "no rx skb");
2975 defer_kevent (dev, EVENT_RX_MEMORY);
2979 skb_reserve (skb, NET_IP_ALIGN);
2981 entry = (struct skb_data *) skb->cb;
2984 entry->state = rx_start;
2987 usb_fill_bulk_urb (urb, dev->udev, dev->in,
2988 skb->data, size, rx_complete, skb);
2989 urb->transfer_flags |= URB_ASYNC_UNLINK;
2991 spin_lock_irqsave (&dev->rxq.lock, lockflags);
2993 if (netif_running (dev->net)
2994 && netif_device_present (dev->net)
2995 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
2996 switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){
2998 defer_kevent (dev, EVENT_RX_HALT);
3001 defer_kevent (dev, EVENT_RX_MEMORY);
3004 if (netif_msg_ifdown (dev))
3005 devdbg (dev, "device gone");
3006 netif_device_detach (dev->net);
3009 if (netif_msg_rx_err (dev))
3010 devdbg (dev, "rx submit, %d", retval);
3011 tasklet_schedule (&dev->bh);
3014 __skb_queue_tail (&dev->rxq, skb);
3017 if (netif_msg_ifdown (dev))
3018 devdbg (dev, "rx: stopped");
3021 spin_unlock_irqrestore (&dev->rxq.lock, lockflags);
3023 dev_kfree_skb_any (skb);
3029 /*-------------------------------------------------------------------------*/
3031 static inline void rx_process (struct usbnet *dev, struct sk_buff *skb)
3033 if (dev->driver_info->rx_fixup
3034 && !dev->driver_info->rx_fixup (dev, skb))
3036 // else network stack removes extra byte if we forced a short packet
3039 skb_return (dev, skb);
3041 if (netif_msg_rx_err (dev))
3042 devdbg (dev, "drop");
3044 dev->stats.rx_errors++;
3045 skb_queue_tail (&dev->done, skb);
3049 /*-------------------------------------------------------------------------*/
3051 static void rx_complete (struct urb *urb, struct pt_regs *regs)
3053 struct sk_buff *skb = (struct sk_buff *) urb->context;
3054 struct skb_data *entry = (struct skb_data *) skb->cb;
3055 struct usbnet *dev = entry->dev;
3056 int urb_status = urb->status;
3058 skb_put (skb, urb->actual_length);
3059 entry->state = rx_done;
3062 switch (urb_status) {
3065 if (MIN_PACKET > skb->len || skb->len > MAX_PACKET) {
3066 entry->state = rx_cleanup;
3067 dev->stats.rx_errors++;
3068 dev->stats.rx_length_errors++;
3069 if (netif_msg_rx_err (dev))
3070 devdbg (dev, "rx length %d", skb->len);
3074 // stalls need manual reset. this is rare ... except that
3075 // when going through USB 2.0 TTs, unplug appears this way.
3076 // we avoid the highspeed version of the ETIMEOUT/EILSEQ
3077 // storm, recovering as needed.
3079 dev->stats.rx_errors++;
3080 defer_kevent (dev, EVENT_RX_HALT);
3083 // software-driven interface shutdown
3084 case -ECONNRESET: // async unlink
3085 case -ESHUTDOWN: // hardware gone
3086 if (netif_msg_ifdown (dev))
3087 devdbg (dev, "rx shutdown, code %d", urb_status);
3090 // we get controller i/o faults during khubd disconnect() delays.
3091 // throttle down resubmits, to avoid log floods; just temporarily,
3092 // so we still recover when the fault isn't a khubd delay.
3093 case -EPROTO: // ehci
3094 case -ETIMEDOUT: // ohci
3095 case -EILSEQ: // uhci
3096 dev->stats.rx_errors++;
3097 if (!timer_pending (&dev->delay)) {
3098 mod_timer (&dev->delay, jiffies + THROTTLE_JIFFIES);
3099 if (netif_msg_link (dev))
3100 devdbg (dev, "rx throttle %d", urb_status);
3103 entry->state = rx_cleanup;
3108 // data overrun ... flush fifo?
3110 dev->stats.rx_over_errors++;
3114 entry->state = rx_cleanup;
3115 dev->stats.rx_errors++;
3116 if (netif_msg_rx_err (dev))
3117 devdbg (dev, "rx status %d", urb_status);
3121 defer_bh (dev, skb);
3124 if (netif_running (dev->net)
3125 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
3126 rx_submit (dev, urb, GFP_ATOMIC);
3131 if (netif_msg_rx_err (dev))
3132 devdbg (dev, "no read resubmitted");
3135 static void intr_complete (struct urb *urb, struct pt_regs *regs)
3137 struct usbnet *dev = urb->context;
3138 int status = urb->status;
3143 dev->driver_info->status(dev, urb);
3146 /* software-driven interface shutdown */
3147 case -ENOENT: // urb killed
3148 case -ESHUTDOWN: // hardware gone
3149 if (netif_msg_ifdown (dev))
3150 devdbg (dev, "intr shutdown, code %d", status);
3153 /* NOTE: not throttling like RX/TX, since this endpoint
3154 * already polls infrequently
3157 devdbg (dev, "intr status %d", status);
3161 if (!netif_running (dev->net))
3164 memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
3165 status = usb_submit_urb (urb, GFP_ATOMIC);
3166 if (status != 0 && netif_msg_timer (dev))
3167 deverr(dev, "intr resubmit --> %d", status);
3170 /*-------------------------------------------------------------------------*/
3172 // unlink pending rx/tx; completion handlers do all other cleanup
3174 static int unlink_urbs (struct usbnet *dev, struct sk_buff_head *q)
3176 unsigned long flags;
3177 struct sk_buff *skb, *skbnext;
3180 spin_lock_irqsave (&q->lock, flags);
3181 for (skb = q->next; skb != (struct sk_buff *) q; skb = skbnext) {
3182 struct skb_data *entry;
3186 entry = (struct skb_data *) skb->cb;
3188 skbnext = skb->next;
3190 // during some PM-driven resume scenarios,
3191 // these (async) unlinks complete immediately
3192 retval = usb_unlink_urb (urb);
3193 if (retval != -EINPROGRESS && retval != 0)
3194 devdbg (dev, "unlink urb err, %d", retval);
3198 spin_unlock_irqrestore (&q->lock, flags);
3203 /*-------------------------------------------------------------------------*/
3205 // precondition: never called in_interrupt
3207 static int usbnet_stop (struct net_device *net)
3209 struct usbnet *dev = netdev_priv(net);
3211 DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup);
3212 DECLARE_WAITQUEUE (wait, current);
3214 netif_stop_queue (net);
3216 if (netif_msg_ifdown (dev))
3217 devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
3218 dev->stats.rx_packets, dev->stats.tx_packets,
3219 dev->stats.rx_errors, dev->stats.tx_errors
3222 // ensure there are no more active urbs
3223 add_wait_queue (&unlink_wakeup, &wait);
3224 dev->wait = &unlink_wakeup;
3225 temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq);
3227 // maybe wait for deletions to finish.
3228 while (skb_queue_len (&dev->rxq)
3229 && skb_queue_len (&dev->txq)
3230 && skb_queue_len (&dev->done)) {
3231 msleep(UNLINK_TIMEOUT_MS);
3232 if (netif_msg_ifdown (dev))
3233 devdbg (dev, "waited for %d urb completions", temp);
3236 remove_wait_queue (&unlink_wakeup, &wait);
3238 usb_kill_urb(dev->interrupt);
3240 /* deferred work (task, timer, softirq) must also stop.
3241 * can't flush_scheduled_work() until we drop rtnl (later),
3242 * else workers could deadlock; so make workers a NOP.
3245 del_timer_sync (&dev->delay);
3246 tasklet_kill (&dev->bh);
3251 /*-------------------------------------------------------------------------*/
3253 // posts reads, and enables write queuing
3255 // precondition: never called in_interrupt
3257 static int usbnet_open (struct net_device *net)
3259 struct usbnet *dev = netdev_priv(net);
3261 struct driver_info *info = dev->driver_info;
3263 // put into "known safe" state
3264 if (info->reset && (retval = info->reset (dev)) < 0) {
3265 if (netif_msg_ifup (dev))
3267 "open reset fail (%d) usbnet usb-%s-%s, %s",
3269 dev->udev->bus->bus_name, dev->udev->devpath,
3274 // insist peer be connected
3275 if (info->check_connect && (retval = info->check_connect (dev)) < 0) {
3276 if (netif_msg_ifup (dev))
3277 devdbg (dev, "can't open; %d", retval);
3281 /* start any status interrupt transfer */
3282 if (dev->interrupt) {
3283 retval = usb_submit_urb (dev->interrupt, GFP_KERNEL);
3285 if (netif_msg_ifup (dev))
3286 deverr (dev, "intr submit %d", retval);
3291 netif_start_queue (net);
3292 if (netif_msg_ifup (dev)) {
3295 if (dev->driver_info->flags & FLAG_FRAMING_NC)
3296 framing = "NetChip";
3297 else if (dev->driver_info->flags & FLAG_FRAMING_GL)
3298 framing = "GeneSys";
3299 else if (dev->driver_info->flags & FLAG_FRAMING_Z)
3301 else if (dev->driver_info->flags & FLAG_FRAMING_RN)
3303 else if (dev->driver_info->flags & FLAG_FRAMING_AX)
3308 devinfo (dev, "open: enable queueing "
3309 "(rx %d, tx %d) mtu %d %s framing",
3310 RX_QLEN (dev), TX_QLEN (dev), dev->net->mtu,
3314 // delay posting reads until we're fully open
3315 tasklet_schedule (&dev->bh);
3320 /*-------------------------------------------------------------------------*/
3322 static void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
3324 struct usbnet *dev = netdev_priv(net);
3326 strncpy (info->driver, driver_name, sizeof info->driver);
3327 strncpy (info->version, DRIVER_VERSION, sizeof info->version);
3328 strncpy (info->fw_version, dev->driver_info->description,
3329 sizeof info->fw_version);
3330 usb_make_path (dev->udev, info->bus_info, sizeof info->bus_info);
3333 static u32 usbnet_get_link (struct net_device *net)
3335 struct usbnet *dev = netdev_priv(net);
3337 /* If a check_connect is defined, return it's results */
3338 if (dev->driver_info->check_connect)
3339 return dev->driver_info->check_connect (dev) == 0;
3341 /* Otherwise, we're up to avoid breaking scripts */
3345 static u32 usbnet_get_msglevel (struct net_device *net)
3347 struct usbnet *dev = netdev_priv(net);
3349 return dev->msg_enable;
3352 static void usbnet_set_msglevel (struct net_device *net, u32 level)
3354 struct usbnet *dev = netdev_priv(net);
3356 dev->msg_enable = level;
3359 static int usbnet_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
3363 struct usbnet *dev = netdev_priv(net);
3365 if (dev->mii.mdio_read != NULL && dev->mii.mdio_write != NULL)
3366 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
3372 /*-------------------------------------------------------------------------*/
3374 /* work that cannot be done in interrupt context uses keventd.
3376 * NOTE: with 2.5 we could do more of this using completion callbacks,
3377 * especially now that control transfers can be queued.
3382 struct usbnet *dev = data;
3385 /* usb_clear_halt() needs a thread context */
3386 if (test_bit (EVENT_TX_HALT, &dev->flags)) {
3387 unlink_urbs (dev, &dev->txq);
3388 status = usb_clear_halt (dev->udev, dev->out);
3389 if (status < 0 && status != -EPIPE) {
3390 if (netif_msg_tx_err (dev))
3391 deverr (dev, "can't clear tx halt, status %d",
3394 clear_bit (EVENT_TX_HALT, &dev->flags);
3395 netif_wake_queue (dev->net);
3398 if (test_bit (EVENT_RX_HALT, &dev->flags)) {
3399 unlink_urbs (dev, &dev->rxq);
3400 status = usb_clear_halt (dev->udev, dev->in);
3401 if (status < 0 && status != -EPIPE) {
3402 if (netif_msg_rx_err (dev))
3403 deverr (dev, "can't clear rx halt, status %d",
3406 clear_bit (EVENT_RX_HALT, &dev->flags);
3407 tasklet_schedule (&dev->bh);
3411 /* tasklet could resubmit itself forever if memory is tight */
3412 if (test_bit (EVENT_RX_MEMORY, &dev->flags)) {
3413 struct urb *urb = NULL;
3415 if (netif_running (dev->net))
3416 urb = usb_alloc_urb (0, GFP_KERNEL);
3418 clear_bit (EVENT_RX_MEMORY, &dev->flags);
3420 clear_bit (EVENT_RX_MEMORY, &dev->flags);
3421 rx_submit (dev, urb, GFP_KERNEL);
3422 tasklet_schedule (&dev->bh);
3426 if (test_bit (EVENT_LINK_RESET, &dev->flags)) {
3427 struct driver_info *info = dev->driver_info;
3430 clear_bit (EVENT_LINK_RESET, &dev->flags);
3431 if(info->link_reset && (retval = info->link_reset(dev)) < 0) {
3432 devinfo(dev, "link reset failed (%d) usbnet usb-%s-%s, %s",
3434 dev->udev->bus->bus_name, dev->udev->devpath,
3440 devdbg (dev, "kevent done, flags = 0x%lx",
3444 /*-------------------------------------------------------------------------*/
3446 static void tx_complete (struct urb *urb, struct pt_regs *regs)
3448 struct sk_buff *skb = (struct sk_buff *) urb->context;
3449 struct skb_data *entry = (struct skb_data *) skb->cb;
3450 struct usbnet *dev = entry->dev;
3452 if (urb->status == 0) {
3453 dev->stats.tx_packets++;
3454 dev->stats.tx_bytes += entry->length;
3456 dev->stats.tx_errors++;
3458 switch (urb->status) {
3460 defer_kevent (dev, EVENT_TX_HALT);
3463 /* software-driven interface shutdown */
3464 case -ECONNRESET: // async unlink
3465 case -ESHUTDOWN: // hardware gone
3468 // like rx, tx gets controller i/o faults during khubd delays
3469 // and so it uses the same throttling mechanism.
3470 case -EPROTO: // ehci
3471 case -ETIMEDOUT: // ohci
3472 case -EILSEQ: // uhci
3473 if (!timer_pending (&dev->delay)) {
3474 mod_timer (&dev->delay,
3475 jiffies + THROTTLE_JIFFIES);
3476 if (netif_msg_link (dev))
3477 devdbg (dev, "tx throttle %d",
3480 netif_stop_queue (dev->net);
3483 if (netif_msg_tx_err (dev))
3484 devdbg (dev, "tx err %d", entry->urb->status);
3490 entry->state = tx_done;
3491 defer_bh (dev, skb);
3494 /*-------------------------------------------------------------------------*/
3496 static void usbnet_tx_timeout (struct net_device *net)
3498 struct usbnet *dev = netdev_priv(net);
3500 unlink_urbs (dev, &dev->txq);
3501 tasklet_schedule (&dev->bh);
3503 // FIXME: device recovery -- reset?
3506 /*-------------------------------------------------------------------------*/
3508 static int usbnet_start_xmit (struct sk_buff *skb, struct net_device *net)
3510 struct usbnet *dev = netdev_priv(net);
3512 int retval = NET_XMIT_SUCCESS;
3513 struct urb *urb = NULL;
3514 struct skb_data *entry;
3515 struct driver_info *info = dev->driver_info;
3516 unsigned long flags;
3517 #ifdef CONFIG_USB_NET1080
3518 struct nc_header *header = NULL;
3519 struct nc_trailer *trailer = NULL;
3520 #endif /* CONFIG_USB_NET1080 */
3522 // some devices want funky USB-level framing, for
3523 // win32 driver (usually) and/or hardware quirks
3524 if (info->tx_fixup) {
3525 skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
3527 if (netif_msg_tx_err (dev))
3528 devdbg (dev, "can't tx_fixup skb");
3534 if (!(urb = usb_alloc_urb (0, GFP_ATOMIC))) {
3535 if (netif_msg_tx_err (dev))
3536 devdbg (dev, "no urb");
3540 entry = (struct skb_data *) skb->cb;
3543 entry->state = tx_start;
3544 entry->length = length;
3546 // FIXME: reorganize a bit, so that fixup() fills out NetChip
3547 // framing too. (Packet ID update needs the spinlock...)
3548 // [ BETTER: we already own net->xmit_lock, that's enough ]
3550 #ifdef CONFIG_USB_NET1080
3551 if (info->flags & FLAG_FRAMING_NC) {
3552 header = (struct nc_header *) skb_push (skb, sizeof *header);
3553 header->hdr_len = cpu_to_le16 (sizeof (*header));
3554 header->packet_len = cpu_to_le16 (length);
3555 if (!((skb->len + sizeof *trailer) & 0x01))
3556 *skb_put (skb, 1) = PAD_BYTE;
3557 trailer = (struct nc_trailer *) skb_put (skb, sizeof *trailer);
3559 #endif /* CONFIG_USB_NET1080 */
3561 usb_fill_bulk_urb (urb, dev->udev, dev->out,
3562 skb->data, skb->len, tx_complete, skb);
3563 urb->transfer_flags |= URB_ASYNC_UNLINK;
3565 /* don't assume the hardware handles USB_ZERO_PACKET
3566 * NOTE: strictly conforming cdc-ether devices should expect
3567 * the ZLP here, but ignore the one-byte packet.
3569 * FIXME zero that byte, if it doesn't require a new skb.
3571 if ((length % dev->maxpacket) == 0)
3572 urb->transfer_buffer_length++;
3574 spin_lock_irqsave (&dev->txq.lock, flags);
3576 #ifdef CONFIG_USB_NET1080
3577 if (info->flags & FLAG_FRAMING_NC) {
3578 header->packet_id = cpu_to_le16 ((u16)dev->dev_packet_id++);
3579 put_unaligned (header->packet_id, &trailer->packet_id);
3581 devdbg (dev, "frame >tx h %d p %d id %d",
3582 header->hdr_len, header->packet_len,
3586 #endif /* CONFIG_USB_NET1080 */
3588 switch ((retval = usb_submit_urb (urb, GFP_ATOMIC))) {
3590 netif_stop_queue (net);
3591 defer_kevent (dev, EVENT_TX_HALT);
3594 if (netif_msg_tx_err (dev))
3595 devdbg (dev, "tx: submit urb err %d", retval);
3598 net->trans_start = jiffies;
3599 __skb_queue_tail (&dev->txq, skb);
3600 if (dev->txq.qlen >= TX_QLEN (dev))
3601 netif_stop_queue (net);
3603 spin_unlock_irqrestore (&dev->txq.lock, flags);
3606 if (netif_msg_tx_err (dev))
3607 devdbg (dev, "drop, code %d", retval);
3609 retval = NET_XMIT_SUCCESS;
3610 dev->stats.tx_dropped++;
3612 dev_kfree_skb_any (skb);
3614 } else if (netif_msg_tx_queued (dev)) {
3615 devdbg (dev, "> tx, len %d, type 0x%x",
3616 length, skb->protocol);
3622 /*-------------------------------------------------------------------------*/
3624 // tasklet (work deferred from completions, in_irq) or timer
3626 static void usbnet_bh (unsigned long param)
3628 struct usbnet *dev = (struct usbnet *) param;
3629 struct sk_buff *skb;
3630 struct skb_data *entry;
3632 while ((skb = skb_dequeue (&dev->done))) {
3633 entry = (struct skb_data *) skb->cb;
3634 switch (entry->state) {
3636 entry->state = rx_cleanup;
3637 rx_process (dev, skb);
3641 usb_free_urb (entry->urb);
3642 dev_kfree_skb (skb);
3645 devdbg (dev, "bogus skb state %d", entry->state);
3649 // waiting for all pending urbs to complete?
3651 if ((dev->txq.qlen + dev->rxq.qlen + dev->done.qlen) == 0) {
3652 wake_up (dev->wait);
3655 // or are we maybe short a few urbs?
3656 } else if (netif_running (dev->net)
3657 && netif_device_present (dev->net)
3658 && !timer_pending (&dev->delay)
3659 && !test_bit (EVENT_RX_HALT, &dev->flags)) {
3660 int temp = dev->rxq.qlen;
3661 int qlen = RX_QLEN (dev);
3667 // don't refill the queue all at once
3668 for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) {
3669 urb = usb_alloc_urb (0, GFP_ATOMIC);
3671 rx_submit (dev, urb, GFP_ATOMIC);
3673 if (temp != dev->rxq.qlen && netif_msg_link (dev))
3674 devdbg (dev, "rxqlen %d --> %d",
3675 temp, dev->rxq.qlen);
3676 if (dev->rxq.qlen < qlen)
3677 tasklet_schedule (&dev->bh);
3679 if (dev->txq.qlen < TX_QLEN (dev))
3680 netif_wake_queue (dev->net);
3686 /*-------------------------------------------------------------------------
3688 * USB Device Driver support
3690 *-------------------------------------------------------------------------*/
3692 // precondition: never called in_interrupt
3694 static void usbnet_disconnect (struct usb_interface *intf)
3697 struct usb_device *xdev;
3698 struct net_device *net;
3700 dev = usb_get_intfdata(intf);
3701 usb_set_intfdata(intf, NULL);
3705 xdev = interface_to_usbdev (intf);
3707 if (netif_msg_probe (dev))
3708 devinfo (dev, "unregister usbnet usb-%s-%s, %s",
3709 xdev->bus->bus_name, xdev->devpath,
3710 dev->driver_info->description);
3713 unregister_netdev (net);
3715 /* we don't hold rtnl here ... */
3716 flush_scheduled_work ();
3718 if (dev->driver_info->unbind)
3719 dev->driver_info->unbind (dev, intf);
3726 /*-------------------------------------------------------------------------*/
3728 static struct ethtool_ops usbnet_ethtool_ops;
3730 // precondition: never called in_interrupt
3733 usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
3736 struct net_device *net;
3737 struct usb_host_interface *interface;
3738 struct driver_info *info;
3739 struct usb_device *xdev;
3742 info = (struct driver_info *) prod->driver_info;
3744 dev_dbg (&udev->dev, "blacklisted by %s\n", driver_name);
3747 xdev = interface_to_usbdev (udev);
3748 interface = udev->cur_altsetting;
3754 // set up our own records
3755 net = alloc_etherdev(sizeof(*dev));
3757 dbg ("can't kmalloc dev");
3761 dev = netdev_priv(net);
3763 dev->driver_info = info;
3764 dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
3765 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
3766 skb_queue_head_init (&dev->rxq);
3767 skb_queue_head_init (&dev->txq);
3768 skb_queue_head_init (&dev->done);
3769 dev->bh.func = usbnet_bh;
3770 dev->bh.data = (unsigned long) dev;
3771 INIT_WORK (&dev->kevent, kevent, dev);
3772 dev->delay.function = usbnet_bh;
3773 dev->delay.data = (unsigned long) dev;
3774 init_timer (&dev->delay);
3776 SET_MODULE_OWNER (net);
3778 strcpy (net->name, "usb%d");
3779 memcpy (net->dev_addr, node_id, sizeof node_id);
3782 // dma_supported() is deeply broken on almost all architectures
3783 // possible with some EHCI controllers
3784 if (dma_supported (&udev->dev, DMA_64BIT_MASK))
3785 net->features |= NETIF_F_HIGHDMA;
3788 net->change_mtu = usbnet_change_mtu;
3789 net->get_stats = usbnet_get_stats;
3790 net->hard_start_xmit = usbnet_start_xmit;
3791 net->open = usbnet_open;
3792 net->stop = usbnet_stop;
3793 net->watchdog_timeo = TX_TIMEOUT_JIFFIES;
3794 net->tx_timeout = usbnet_tx_timeout;
3795 net->do_ioctl = usbnet_ioctl;
3796 net->ethtool_ops = &usbnet_ethtool_ops;
3798 // allow device-specific bind/init procedures
3799 // NOTE net->name still not usable ...
3801 status = info->bind (dev, udev);
3802 // heuristic: "usb%d" for links we know are two-host,
3803 // else "eth%d" when there's reasonable doubt. userspace
3804 // can rename the link if it knows better.
3805 if ((dev->driver_info->flags & FLAG_ETHER) != 0
3806 && (net->dev_addr [0] & 0x02) == 0)
3807 strcpy (net->name, "eth%d");
3808 } else if (!info->in || info->out)
3809 status = get_endpoints (dev, udev);
3811 dev->in = usb_rcvbulkpipe (xdev, info->in);
3812 dev->out = usb_sndbulkpipe (xdev, info->out);
3813 if (!(info->flags & FLAG_NO_SETINT))
3814 status = usb_set_interface (xdev,
3815 interface->desc.bInterfaceNumber,
3816 interface->desc.bAlternateSetting);
3822 if (status == 0 && dev->status)
3823 status = init_status (dev, udev);
3827 dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
3829 SET_NETDEV_DEV(net, &udev->dev);
3830 status = register_netdev (net);
3833 if (netif_msg_probe (dev))
3834 devinfo (dev, "register usbnet at usb-%s-%s, %s, "
3835 "%02x:%02x:%02x:%02x:%02x:%02x",
3836 xdev->bus->bus_name, xdev->devpath,
3837 dev->driver_info->description,
3838 net->dev_addr [0], net->dev_addr [1],
3839 net->dev_addr [2], net->dev_addr [3],
3840 net->dev_addr [4], net->dev_addr [5]);
3842 // ok, it's ready to go.
3843 usb_set_intfdata (udev, dev);
3845 // start as if the link is up
3846 netif_device_attach (net);
3852 info->unbind (dev, udev);
3860 /*-------------------------------------------------------------------------*/
3864 static int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
3866 struct usbnet *dev = usb_get_intfdata(intf);
3868 /* accelerate emptying of the rx and queues, to avoid
3869 * having everything error out.
3871 netif_device_detach (dev->net);
3872 (void) unlink_urbs (dev, &dev->rxq);
3873 (void) unlink_urbs (dev, &dev->txq);
3874 intf->dev.power.power_state = PMSG_SUSPEND;
3878 static int usbnet_resume (struct usb_interface *intf)
3880 struct usbnet *dev = usb_get_intfdata(intf);
3882 intf->dev.power.power_state = PMSG_ON;
3883 netif_device_attach (dev->net);
3884 tasklet_schedule (&dev->bh);
3888 #else /* !CONFIG_PM */
3890 #define usbnet_suspend NULL
3891 #define usbnet_resume NULL
3893 #endif /* CONFIG_PM */
3895 /*-------------------------------------------------------------------------*/
3897 #ifndef HAVE_HARDWARE
3898 #error You need to configure some hardware for this driver
3902 * chip vendor names won't normally be on the cables, and
3903 * may not be on the device.
3906 static const struct usb_device_id products [] = {
3908 #ifdef CONFIG_USB_ALI_M5632
3910 USB_DEVICE (0x0402, 0x5632), // ALi defaults
3911 .driver_info = (unsigned long) &ali_m5632_info,
3915 #ifdef CONFIG_USB_AN2720
3917 USB_DEVICE (0x0547, 0x2720), // AnchorChips defaults
3918 .driver_info = (unsigned long) &an2720_info,
3920 USB_DEVICE (0x0547, 0x2727), // Xircom PGUNET
3921 .driver_info = (unsigned long) &an2720_info,
3925 #ifdef CONFIG_USB_BELKIN
3927 USB_DEVICE (0x050d, 0x0004), // Belkin
3928 .driver_info = (unsigned long) &belkin_info,
3930 USB_DEVICE (0x056c, 0x8100), // eTEK
3931 .driver_info = (unsigned long) &belkin_info,
3933 USB_DEVICE (0x0525, 0x9901), // Advance USBNET (eTEK)
3934 .driver_info = (unsigned long) &belkin_info,
3938 #ifdef CONFIG_USB_AX8817X
3941 USB_DEVICE (0x077b, 0x2226),
3942 .driver_info = (unsigned long) &ax8817x_info,
3945 USB_DEVICE (0x0846, 0x1040),
3946 .driver_info = (unsigned long) &netgear_fa120_info,
3949 USB_DEVICE (0x2001, 0x1a00),
3950 .driver_info = (unsigned long) &dlink_dub_e100_info,
3952 // Intellinet, ST Lab USB Ethernet
3953 USB_DEVICE (0x0b95, 0x1720),
3954 .driver_info = (unsigned long) &ax8817x_info,
3956 // Hawking UF200, TrendNet TU2-ET100
3957 USB_DEVICE (0x07b8, 0x420a),
3958 .driver_info = (unsigned long) &hawking_uf200_info,
3960 // Billionton Systems, USB2AR
3961 USB_DEVICE (0x08dd, 0x90ff),
3962 .driver_info = (unsigned long) &ax8817x_info,
3965 USB_DEVICE (0x0557, 0x2009),
3966 .driver_info = (unsigned long) &ax8817x_info,
3968 // Buffalo LUA-U2-KTX
3969 USB_DEVICE (0x0411, 0x003d),
3970 .driver_info = (unsigned long) &ax8817x_info,
3972 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
3973 USB_DEVICE (0x6189, 0x182d),
3974 .driver_info = (unsigned long) &ax8817x_info,
3976 // corega FEther USB2-TX
3977 USB_DEVICE (0x07aa, 0x0017),
3978 .driver_info = (unsigned long) &ax8817x_info,
3980 // Surecom EP-1427X-2
3981 USB_DEVICE (0x1189, 0x0893),
3982 .driver_info = (unsigned long) &ax8817x_info,
3984 // goodway corp usb gwusb2e
3985 USB_DEVICE (0x1631, 0x6200),
3986 .driver_info = (unsigned long) &ax8817x_info,
3988 // ASIX AX88772 10/100
3989 USB_DEVICE (0x0b95, 0x7720),
3990 .driver_info = (unsigned long) &ax88772_info,
3994 #ifdef CONFIG_USB_EPSON2888
3996 USB_DEVICE (0x0525, 0x2888), // EPSON USB client
3997 .driver_info = (unsigned long) &epson2888_info,
4001 #ifdef CONFIG_USB_GENESYS
4003 USB_DEVICE (0x05e3, 0x0502), // GL620USB-A
4004 .driver_info = (unsigned long) &genelink_info,
4006 /* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB
4007 * that's half duplex, not currently supported
4011 #ifdef CONFIG_USB_NET1080
4013 USB_DEVICE (0x0525, 0x1080), // NetChip ref design
4014 .driver_info = (unsigned long) &net1080_info,
4016 USB_DEVICE (0x06D0, 0x0622), // Laplink Gold
4017 .driver_info = (unsigned long) &net1080_info,
4021 #ifdef CONFIG_USB_PL2301
4023 USB_DEVICE (0x067b, 0x0000), // PL-2301
4024 .driver_info = (unsigned long) &prolific_info,
4026 USB_DEVICE (0x067b, 0x0001), // PL-2302
4027 .driver_info = (unsigned long) &prolific_info,
4031 #ifdef CONFIG_USB_KC2190
4033 USB_DEVICE (0x050f, 0x0190), // KC-190
4034 .driver_info = (unsigned long) &kc2190_info,
4038 #ifdef CONFIG_USB_RNDIS
4040 /* RNDIS is MSFT's un-official variant of CDC ACM */
4041 USB_INTERFACE_INFO (USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
4042 .driver_info = (unsigned long) &rndis_info,
4046 #ifdef CONFIG_USB_ARMLINUX
4048 * SA-1100 using standard ARM Linux kernels, or compatible.
4049 * Often used when talking to Linux PDAs (iPaq, Yopy, etc).
4050 * The sa-1100 "usb-eth" driver handles the basic framing.
4052 * PXA25x or PXA210 ... these use a "usb-eth" driver much like
4053 * the sa1100 one, but hardware uses different endpoint numbers.
4055 * Or the Linux "Ethernet" gadget on hardware that can't talk
4056 * CDC Ethernet (e.g., no altsettings), in either of two modes:
4057 * - acting just like the old "usb-eth" firmware, though
4058 * the implementation is different
4059 * - supporting RNDIS as the first/default configuration for
4060 * MS-Windows interop; Linux needs to use the other config
4063 // 1183 = 0x049F, both used as hex values?
4064 // Compaq "Itsy" vendor/product id
4065 USB_DEVICE (0x049F, 0x505A), // usb-eth, or compatible
4066 .driver_info = (unsigned long) &linuxdev_info,
4068 USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy"
4069 .driver_info = (unsigned long) &yopy_info,
4071 USB_DEVICE (0x8086, 0x07d3), // "blob" bootloader
4072 .driver_info = (unsigned long) &blob_info,
4074 // Linux Ethernet/RNDIS gadget on pxa210/25x/26x
4075 // e.g. Gumstix, current OpenZaurus, ...
4076 USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203),
4077 .driver_info = (unsigned long) &linuxdev_info,
4081 #if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER)
4083 * SA-1100 based Sharp Zaurus ("collie"), or compatible.
4084 * Same idea as above, but different framing.
4086 * PXA-2xx based models are also lying-about-cdc.
4087 * Some models don't even tell the same lies ...
4089 * NOTE: OpenZaurus versions with 2.6 kernels won't use these entries,
4090 * unlike the older ones with 2.4 "embedix" kernels.
4092 * NOTE: These entries do double-duty, serving as blacklist entries
4093 * whenever Zaurus support isn't enabled, but CDC Ethernet is.
4095 #define ZAURUS_MASTER_INTERFACE \
4096 .bInterfaceClass = USB_CLASS_COMM, \
4097 .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
4098 .bInterfaceProtocol = USB_CDC_PROTO_NONE
4100 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4101 | USB_DEVICE_ID_MATCH_DEVICE,
4103 .idProduct = 0x8004,
4104 ZAURUS_MASTER_INTERFACE,
4105 .driver_info = ZAURUS_STRONGARM_INFO,
4107 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4108 | USB_DEVICE_ID_MATCH_DEVICE,
4110 .idProduct = 0x8005, /* A-300 */
4111 ZAURUS_MASTER_INTERFACE,
4112 .driver_info = ZAURUS_PXA_INFO,
4114 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4115 | USB_DEVICE_ID_MATCH_DEVICE,
4117 .idProduct = 0x8006, /* B-500/SL-5600 */
4118 ZAURUS_MASTER_INTERFACE,
4119 .driver_info = ZAURUS_PXA_INFO,
4121 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4122 | USB_DEVICE_ID_MATCH_DEVICE,
4124 .idProduct = 0x8007, /* C-700 */
4125 ZAURUS_MASTER_INTERFACE,
4126 .driver_info = ZAURUS_PXA_INFO,
4128 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4129 | USB_DEVICE_ID_MATCH_DEVICE,
4131 .idProduct = 0x9031, /* C-750 C-760 */
4132 ZAURUS_MASTER_INTERFACE,
4133 .driver_info = ZAURUS_PXA_INFO,
4135 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4136 | USB_DEVICE_ID_MATCH_DEVICE,
4138 .idProduct = 0x9032, /* SL-6000 */
4139 ZAURUS_MASTER_INTERFACE,
4140 .driver_info = ZAURUS_PXA_INFO,
4142 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4143 | USB_DEVICE_ID_MATCH_DEVICE,
4145 /* reported with some C860 units */
4146 .idProduct = 0x9050, /* C-860 */
4147 ZAURUS_MASTER_INTERFACE,
4148 .driver_info = ZAURUS_PXA_INFO,
4151 #ifdef CONFIG_USB_ZAURUS
4152 /* At least some (reports vary) PXA units have very different lies
4153 * about their standards support: they claim to be cell phones with
4154 * direct access to their radios. (They don't conform to CDC MDLM.)
4157 USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
4158 USB_CDC_PROTO_NONE),
4159 .driver_info = (unsigned long) &bogus_mdlm_info,
4163 /* Olympus has some models with a Zaurus-compatible option.
4164 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
4167 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
4168 | USB_DEVICE_ID_MATCH_DEVICE,
4170 .idProduct = 0x0F02, /* R-1000 */
4171 ZAURUS_MASTER_INTERFACE,
4172 .driver_info = OLYMPUS_MXL_INFO,
4176 #ifdef CONFIG_USB_CDCETHER
4178 /* CDC Ether uses two interfaces, not necessarily consecutive.
4179 * We match the main interface, ignoring the optional device
4180 * class so we could handle devices that aren't exclusively
4183 * NOTE: this match must come AFTER entries working around
4184 * bugs/quirks in a given product (like Zaurus, above).
4186 USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
4187 USB_CDC_PROTO_NONE),
4188 .driver_info = (unsigned long) &cdc_info,
4194 MODULE_DEVICE_TABLE (usb, products);
4196 static struct usb_driver usbnet_driver = {
4197 .owner = THIS_MODULE,
4198 .name = driver_name,
4199 .id_table = products,
4200 .probe = usbnet_probe,
4201 .disconnect = usbnet_disconnect,
4202 .suspend = usbnet_suspend,
4203 .resume = usbnet_resume,
4206 /* Default ethtool_ops assigned. Devices can override in their bind() routine */
4207 static struct ethtool_ops usbnet_ethtool_ops = {
4208 .get_drvinfo = usbnet_get_drvinfo,
4209 .get_link = usbnet_get_link,
4210 .get_msglevel = usbnet_get_msglevel,
4211 .set_msglevel = usbnet_set_msglevel,
4214 /*-------------------------------------------------------------------------*/
4216 static int __init usbnet_init (void)
4218 // compiler should optimize these out
4219 BUG_ON (sizeof (((struct sk_buff *)0)->cb)
4220 < sizeof (struct skb_data));
4221 #ifdef CONFIG_USB_CDCETHER
4222 BUG_ON ((sizeof (((struct usbnet *)0)->data)
4223 < sizeof (struct cdc_state)));
4226 random_ether_addr(node_id);
4228 return usb_register(&usbnet_driver);
4230 module_init (usbnet_init);
4232 static void __exit usbnet_exit (void)
4234 usb_deregister (&usbnet_driver);
4236 module_exit (usbnet_exit);
4238 MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>");
4239 MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)");
4240 MODULE_LICENSE ("GPL");