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
, unsigned 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",
1432 info
->ether
->bLength
);
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
;
1520 #endif /* NEED_GENERIC_CDC */
1523 #ifdef CONFIG_USB_CDCETHER
1524 #define HAVE_HARDWARE
1526 /*-------------------------------------------------------------------------
1528 * Communications Device Class, Ethernet Control model
1530 * Takes two interfaces. The DATA interface is inactive till an altsetting
1531 * is selected. Configuration data includes class descriptors.
1533 * This should interop with whatever the 2.4 "CDCEther.c" driver
1534 * (by Brad Hards) talked with.
1536 *-------------------------------------------------------------------------*/
1538 #include <linux/ctype.h>
1541 static void dumpspeed (struct usbnet
*dev
, __le32
*speeds
)
1543 if (netif_msg_timer (dev
))
1544 devinfo (dev
, "link speeds: %u kbps up, %u kbps down",
1545 __le32_to_cpu(speeds
[0]) / 1000,
1546 __le32_to_cpu(speeds
[1]) / 1000);
1549 static void cdc_status (struct usbnet
*dev
, struct urb
*urb
)
1551 struct usb_cdc_notification
*event
;
1553 if (urb
->actual_length
< sizeof *event
)
1556 /* SPEED_CHANGE can get split into two 8-byte packets */
1557 if (test_and_clear_bit (EVENT_STS_SPLIT
, &dev
->flags
)) {
1558 dumpspeed (dev
, (__le32
*) urb
->transfer_buffer
);
1562 event
= urb
->transfer_buffer
;
1563 switch (event
->bNotificationType
) {
1564 case USB_CDC_NOTIFY_NETWORK_CONNECTION
:
1565 if (netif_msg_timer (dev
))
1566 devdbg (dev
, "CDC: carrier %s",
1567 event
->wValue
? "on" : "off");
1569 netif_carrier_on(dev
->net
);
1571 netif_carrier_off(dev
->net
);
1573 case USB_CDC_NOTIFY_SPEED_CHANGE
: /* tx/rx rates */
1574 if (netif_msg_timer (dev
))
1575 devdbg (dev
, "CDC: speed change (len %d)",
1576 urb
->actual_length
);
1577 if (urb
->actual_length
!= (sizeof *event
+ 8))
1578 set_bit (EVENT_STS_SPLIT
, &dev
->flags
);
1580 dumpspeed (dev
, (__le32
*) &event
[1]);
1582 // case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: /* RNDIS; or unsolicited */
1584 deverr (dev
, "CDC: unexpected notification %02x!",
1585 event
->bNotificationType
);
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
, gl_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
, unsigned 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
, unsigned 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
, unsigned 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
, safe_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 (CRC includes some padding)
2801 * - 0x04 -- PADAFTER (some padding after CRC)
2802 * - 0x08 -- "fermat" packet mangling (for hw bugs)
2803 * the PADBEFORE appears not to matter; we interop
2804 * with devices that use it and those that don't.
2806 if ((detail
->bDetailData
[1] & ~02) != 0x01) {
2807 /* bmDataCapabilites == 0 would be fine too,
2808 * but framing is minidriver-coupled for now.
2811 dev_dbg (&intf
->dev
,
2812 "bad MDLM detail, %d %d %d\n",
2814 detail
->bDetailData
[0],
2815 detail
->bDetailData
[2]);
2821 len
-= buf
[0]; /* bLength */
2825 if (!desc
|| !detail
) {
2826 dev_dbg (&intf
->dev
, "missing cdc mdlm %s%sdescriptor\n",
2827 desc
? "" : "func ",
2828 detail
? "" : "detail ");
2832 /* There's probably a CDC Ethernet descriptor there, but we can't
2833 * rely on the Ethernet address it provides since not all vendors
2834 * bother to make it unique. Likewise there's no point in tracking
2835 * of the CDC event notifications.
2837 return get_endpoints (dev
, intf
);
2840 dev_info (&dev
->udev
->dev
, "unsupported MDLM descriptors\n");
2844 static const struct driver_info bogus_mdlm_info
= {
2845 .description
= "pseudo-MDLM (BLAN) device",
2846 .flags
= FLAG_FRAMING_Z
,
2847 .check_connect
= always_connected
,
2848 .tx_fixup
= zaurus_tx_fixup
,
2849 .bind
= blan_mdlm_bind
,
2854 /* blacklist all those devices */
2855 #define ZAURUS_STRONGARM_INFO 0
2856 #define ZAURUS_PXA_INFO 0
2857 #define OLYMPUS_MXL_INFO 0
2862 /*-------------------------------------------------------------------------
2864 * Network Device Driver (peer link to "Host Device", from USB host)
2866 *-------------------------------------------------------------------------*/
2868 static int usbnet_change_mtu (struct net_device
*net
, int new_mtu
)
2870 struct usbnet
*dev
= netdev_priv(net
);
2872 if (new_mtu
<= MIN_PACKET
|| new_mtu
> MAX_PACKET
)
2874 #ifdef CONFIG_USB_NET1080
2875 if (((dev
->driver_info
->flags
) & FLAG_FRAMING_NC
)) {
2876 if (FRAMED_SIZE (new_mtu
) > MAX_PACKET
)
2880 #ifdef CONFIG_USB_GENESYS
2881 if (((dev
->driver_info
->flags
) & FLAG_FRAMING_GL
)
2882 && new_mtu
> GL_MAX_PACKET_LEN
)
2885 // no second zero-length packet read wanted after mtu-sized packets
2886 if (((new_mtu
+ sizeof (struct ethhdr
)) % dev
->maxpacket
) == 0)
2892 /*-------------------------------------------------------------------------*/
2894 static struct net_device_stats
*usbnet_get_stats (struct net_device
*net
)
2896 struct usbnet
*dev
= netdev_priv(net
);
2900 /*-------------------------------------------------------------------------*/
2902 /* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from
2903 * completion callbacks. 2.5 should have fixed those bugs...
2906 static void defer_bh(struct usbnet
*dev
, struct sk_buff
*skb
, struct sk_buff_head
*list
)
2908 unsigned long flags
;
2910 spin_lock_irqsave(&list
->lock
, flags
);
2911 __skb_unlink(skb
, list
);
2912 spin_unlock(&list
->lock
);
2913 spin_lock(&dev
->done
.lock
);
2914 __skb_queue_tail(&dev
->done
, skb
);
2915 if (dev
->done
.qlen
== 1)
2916 tasklet_schedule(&dev
->bh
);
2917 spin_unlock_irqrestore(&dev
->done
.lock
, flags
);
2920 /* some work can't be done in tasklets, so we use keventd
2922 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
2923 * but tasklet_schedule() doesn't. hope the failure is rare.
2925 static void defer_kevent (struct usbnet
*dev
, int work
)
2927 set_bit (work
, &dev
->flags
);
2928 if (!schedule_work (&dev
->kevent
))
2929 deverr (dev
, "kevent %d may have been dropped", work
);
2931 devdbg (dev
, "kevent %d scheduled", work
);
2934 /*-------------------------------------------------------------------------*/
2936 static void rx_complete (struct urb
*urb
, struct pt_regs
*regs
);
2938 static void rx_submit (struct usbnet
*dev
, struct urb
*urb
, unsigned flags
)
2940 struct sk_buff
*skb
;
2941 struct skb_data
*entry
;
2943 unsigned long lockflags
;
2946 #ifdef CONFIG_USB_NET1080
2947 if (dev
->driver_info
->flags
& FLAG_FRAMING_NC
)
2948 size
= FRAMED_SIZE (dev
->net
->mtu
);
2951 #ifdef CONFIG_USB_GENESYS
2952 if (dev
->driver_info
->flags
& FLAG_FRAMING_GL
)
2953 size
= GL_RCV_BUF_SIZE
;
2956 #ifdef CONFIG_USB_ZAURUS
2957 if (dev
->driver_info
->flags
& FLAG_FRAMING_Z
)
2958 size
= 6 + (sizeof (struct ethhdr
) + dev
->net
->mtu
);
2961 #ifdef CONFIG_USB_RNDIS
2962 if (dev
->driver_info
->flags
& FLAG_FRAMING_RN
)
2963 size
= RNDIS_MAX_TRANSFER
;
2966 #ifdef CONFIG_USB_AX8817X
2967 if (dev
->driver_info
->flags
& FLAG_FRAMING_AX
)
2971 size
= (sizeof (struct ethhdr
) + dev
->net
->mtu
);
2973 if ((skb
= alloc_skb (size
+ NET_IP_ALIGN
, flags
)) == NULL
) {
2974 if (netif_msg_rx_err (dev
))
2975 devdbg (dev
, "no rx skb");
2976 defer_kevent (dev
, EVENT_RX_MEMORY
);
2980 skb_reserve (skb
, NET_IP_ALIGN
);
2982 entry
= (struct skb_data
*) skb
->cb
;
2985 entry
->state
= rx_start
;
2988 usb_fill_bulk_urb (urb
, dev
->udev
, dev
->in
,
2989 skb
->data
, size
, rx_complete
, skb
);
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
, &dev
->rxq
);
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_empty(&dev
->rxq
) &&
3229 !skb_queue_empty(&dev
->txq
) &&
3230 !skb_queue_empty(&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
, &dev
->txq
);
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
);
3564 /* don't assume the hardware handles USB_ZERO_PACKET
3565 * NOTE: strictly conforming cdc-ether devices should expect
3566 * the ZLP here, but ignore the one-byte packet.
3568 * FIXME zero that byte, if it doesn't require a new skb.
3570 if ((length
% dev
->maxpacket
) == 0)
3571 urb
->transfer_buffer_length
++;
3573 spin_lock_irqsave (&dev
->txq
.lock
, flags
);
3575 #ifdef CONFIG_USB_NET1080
3576 if (info
->flags
& FLAG_FRAMING_NC
) {
3577 header
->packet_id
= cpu_to_le16 ((u16
)dev
->dev_packet_id
++);
3578 put_unaligned (header
->packet_id
, &trailer
->packet_id
);
3580 devdbg (dev
, "frame >tx h %d p %d id %d",
3581 header
->hdr_len
, header
->packet_len
,
3585 #endif /* CONFIG_USB_NET1080 */
3587 switch ((retval
= usb_submit_urb (urb
, GFP_ATOMIC
))) {
3589 netif_stop_queue (net
);
3590 defer_kevent (dev
, EVENT_TX_HALT
);
3593 if (netif_msg_tx_err (dev
))
3594 devdbg (dev
, "tx: submit urb err %d", retval
);
3597 net
->trans_start
= jiffies
;
3598 __skb_queue_tail (&dev
->txq
, skb
);
3599 if (dev
->txq
.qlen
>= TX_QLEN (dev
))
3600 netif_stop_queue (net
);
3602 spin_unlock_irqrestore (&dev
->txq
.lock
, flags
);
3605 if (netif_msg_tx_err (dev
))
3606 devdbg (dev
, "drop, code %d", retval
);
3608 retval
= NET_XMIT_SUCCESS
;
3609 dev
->stats
.tx_dropped
++;
3611 dev_kfree_skb_any (skb
);
3613 } else if (netif_msg_tx_queued (dev
)) {
3614 devdbg (dev
, "> tx, len %d, type 0x%x",
3615 length
, skb
->protocol
);
3621 /*-------------------------------------------------------------------------*/
3623 // tasklet (work deferred from completions, in_irq) or timer
3625 static void usbnet_bh (unsigned long param
)
3627 struct usbnet
*dev
= (struct usbnet
*) param
;
3628 struct sk_buff
*skb
;
3629 struct skb_data
*entry
;
3631 while ((skb
= skb_dequeue (&dev
->done
))) {
3632 entry
= (struct skb_data
*) skb
->cb
;
3633 switch (entry
->state
) {
3635 entry
->state
= rx_cleanup
;
3636 rx_process (dev
, skb
);
3640 usb_free_urb (entry
->urb
);
3641 dev_kfree_skb (skb
);
3644 devdbg (dev
, "bogus skb state %d", entry
->state
);
3648 // waiting for all pending urbs to complete?
3650 if ((dev
->txq
.qlen
+ dev
->rxq
.qlen
+ dev
->done
.qlen
) == 0) {
3651 wake_up (dev
->wait
);
3654 // or are we maybe short a few urbs?
3655 } else if (netif_running (dev
->net
)
3656 && netif_device_present (dev
->net
)
3657 && !timer_pending (&dev
->delay
)
3658 && !test_bit (EVENT_RX_HALT
, &dev
->flags
)) {
3659 int temp
= dev
->rxq
.qlen
;
3660 int qlen
= RX_QLEN (dev
);
3666 // don't refill the queue all at once
3667 for (i
= 0; i
< 10 && dev
->rxq
.qlen
< qlen
; i
++) {
3668 urb
= usb_alloc_urb (0, GFP_ATOMIC
);
3670 rx_submit (dev
, urb
, GFP_ATOMIC
);
3672 if (temp
!= dev
->rxq
.qlen
&& netif_msg_link (dev
))
3673 devdbg (dev
, "rxqlen %d --> %d",
3674 temp
, dev
->rxq
.qlen
);
3675 if (dev
->rxq
.qlen
< qlen
)
3676 tasklet_schedule (&dev
->bh
);
3678 if (dev
->txq
.qlen
< TX_QLEN (dev
))
3679 netif_wake_queue (dev
->net
);
3685 /*-------------------------------------------------------------------------
3687 * USB Device Driver support
3689 *-------------------------------------------------------------------------*/
3691 // precondition: never called in_interrupt
3693 static void usbnet_disconnect (struct usb_interface
*intf
)
3696 struct usb_device
*xdev
;
3697 struct net_device
*net
;
3699 dev
= usb_get_intfdata(intf
);
3700 usb_set_intfdata(intf
, NULL
);
3704 xdev
= interface_to_usbdev (intf
);
3706 if (netif_msg_probe (dev
))
3707 devinfo (dev
, "unregister usbnet usb-%s-%s, %s",
3708 xdev
->bus
->bus_name
, xdev
->devpath
,
3709 dev
->driver_info
->description
);
3712 unregister_netdev (net
);
3714 /* we don't hold rtnl here ... */
3715 flush_scheduled_work ();
3717 if (dev
->driver_info
->unbind
)
3718 dev
->driver_info
->unbind (dev
, intf
);
3725 /*-------------------------------------------------------------------------*/
3727 static struct ethtool_ops usbnet_ethtool_ops
;
3729 // precondition: never called in_interrupt
3732 usbnet_probe (struct usb_interface
*udev
, const struct usb_device_id
*prod
)
3735 struct net_device
*net
;
3736 struct usb_host_interface
*interface
;
3737 struct driver_info
*info
;
3738 struct usb_device
*xdev
;
3741 info
= (struct driver_info
*) prod
->driver_info
;
3743 dev_dbg (&udev
->dev
, "blacklisted by %s\n", driver_name
);
3746 xdev
= interface_to_usbdev (udev
);
3747 interface
= udev
->cur_altsetting
;
3753 // set up our own records
3754 net
= alloc_etherdev(sizeof(*dev
));
3756 dbg ("can't kmalloc dev");
3760 dev
= netdev_priv(net
);
3762 dev
->driver_info
= info
;
3763 dev
->msg_enable
= netif_msg_init (msg_level
, NETIF_MSG_DRV
3764 | NETIF_MSG_PROBE
| NETIF_MSG_LINK
);
3765 skb_queue_head_init (&dev
->rxq
);
3766 skb_queue_head_init (&dev
->txq
);
3767 skb_queue_head_init (&dev
->done
);
3768 dev
->bh
.func
= usbnet_bh
;
3769 dev
->bh
.data
= (unsigned long) dev
;
3770 INIT_WORK (&dev
->kevent
, kevent
, dev
);
3771 dev
->delay
.function
= usbnet_bh
;
3772 dev
->delay
.data
= (unsigned long) dev
;
3773 init_timer (&dev
->delay
);
3775 SET_MODULE_OWNER (net
);
3777 strcpy (net
->name
, "usb%d");
3778 memcpy (net
->dev_addr
, node_id
, sizeof node_id
);
3781 // dma_supported() is deeply broken on almost all architectures
3782 // possible with some EHCI controllers
3783 if (dma_supported (&udev
->dev
, DMA_64BIT_MASK
))
3784 net
->features
|= NETIF_F_HIGHDMA
;
3787 net
->change_mtu
= usbnet_change_mtu
;
3788 net
->get_stats
= usbnet_get_stats
;
3789 net
->hard_start_xmit
= usbnet_start_xmit
;
3790 net
->open
= usbnet_open
;
3791 net
->stop
= usbnet_stop
;
3792 net
->watchdog_timeo
= TX_TIMEOUT_JIFFIES
;
3793 net
->tx_timeout
= usbnet_tx_timeout
;
3794 net
->do_ioctl
= usbnet_ioctl
;
3795 net
->ethtool_ops
= &usbnet_ethtool_ops
;
3797 // allow device-specific bind/init procedures
3798 // NOTE net->name still not usable ...
3800 status
= info
->bind (dev
, udev
);
3801 // heuristic: "usb%d" for links we know are two-host,
3802 // else "eth%d" when there's reasonable doubt. userspace
3803 // can rename the link if it knows better.
3804 if ((dev
->driver_info
->flags
& FLAG_ETHER
) != 0
3805 && (net
->dev_addr
[0] & 0x02) == 0)
3806 strcpy (net
->name
, "eth%d");
3807 } else if (!info
->in
|| info
->out
)
3808 status
= get_endpoints (dev
, udev
);
3810 dev
->in
= usb_rcvbulkpipe (xdev
, info
->in
);
3811 dev
->out
= usb_sndbulkpipe (xdev
, info
->out
);
3812 if (!(info
->flags
& FLAG_NO_SETINT
))
3813 status
= usb_set_interface (xdev
,
3814 interface
->desc
.bInterfaceNumber
,
3815 interface
->desc
.bAlternateSetting
);
3821 if (status
== 0 && dev
->status
)
3822 status
= init_status (dev
, udev
);
3826 dev
->maxpacket
= usb_maxpacket (dev
->udev
, dev
->out
, 1);
3828 SET_NETDEV_DEV(net
, &udev
->dev
);
3829 status
= register_netdev (net
);
3832 if (netif_msg_probe (dev
))
3833 devinfo (dev
, "register usbnet at usb-%s-%s, %s, "
3834 "%02x:%02x:%02x:%02x:%02x:%02x",
3835 xdev
->bus
->bus_name
, xdev
->devpath
,
3836 dev
->driver_info
->description
,
3837 net
->dev_addr
[0], net
->dev_addr
[1],
3838 net
->dev_addr
[2], net
->dev_addr
[3],
3839 net
->dev_addr
[4], net
->dev_addr
[5]);
3841 // ok, it's ready to go.
3842 usb_set_intfdata (udev
, dev
);
3844 // start as if the link is up
3845 netif_device_attach (net
);
3851 info
->unbind (dev
, udev
);
3859 /*-------------------------------------------------------------------------*/
3863 static int usbnet_suspend (struct usb_interface
*intf
, pm_message_t message
)
3865 struct usbnet
*dev
= usb_get_intfdata(intf
);
3867 /* accelerate emptying of the rx and queues, to avoid
3868 * having everything error out.
3870 netif_device_detach (dev
->net
);
3871 (void) unlink_urbs (dev
, &dev
->rxq
);
3872 (void) unlink_urbs (dev
, &dev
->txq
);
3873 intf
->dev
.power
.power_state
= PMSG_SUSPEND
;
3877 static int usbnet_resume (struct usb_interface
*intf
)
3879 struct usbnet
*dev
= usb_get_intfdata(intf
);
3881 intf
->dev
.power
.power_state
= PMSG_ON
;
3882 netif_device_attach (dev
->net
);
3883 tasklet_schedule (&dev
->bh
);
3887 #else /* !CONFIG_PM */
3889 #define usbnet_suspend NULL
3890 #define usbnet_resume NULL
3892 #endif /* CONFIG_PM */
3894 /*-------------------------------------------------------------------------*/
3896 #ifndef HAVE_HARDWARE
3897 #error You need to configure some hardware for this driver
3901 * chip vendor names won't normally be on the cables, and
3902 * may not be on the device.
3905 static const struct usb_device_id products
[] = {
3907 #ifdef CONFIG_USB_ALI_M5632
3909 USB_DEVICE (0x0402, 0x5632), // ALi defaults
3910 .driver_info
= (unsigned long) &ali_m5632_info
,
3914 #ifdef CONFIG_USB_AN2720
3916 USB_DEVICE (0x0547, 0x2720), // AnchorChips defaults
3917 .driver_info
= (unsigned long) &an2720_info
,
3919 USB_DEVICE (0x0547, 0x2727), // Xircom PGUNET
3920 .driver_info
= (unsigned long) &an2720_info
,
3924 #ifdef CONFIG_USB_BELKIN
3926 USB_DEVICE (0x050d, 0x0004), // Belkin
3927 .driver_info
= (unsigned long) &belkin_info
,
3929 USB_DEVICE (0x056c, 0x8100), // eTEK
3930 .driver_info
= (unsigned long) &belkin_info
,
3932 USB_DEVICE (0x0525, 0x9901), // Advance USBNET (eTEK)
3933 .driver_info
= (unsigned long) &belkin_info
,
3937 #ifdef CONFIG_USB_AX8817X
3940 USB_DEVICE (0x077b, 0x2226),
3941 .driver_info
= (unsigned long) &ax8817x_info
,
3944 USB_DEVICE (0x0846, 0x1040),
3945 .driver_info
= (unsigned long) &netgear_fa120_info
,
3948 USB_DEVICE (0x2001, 0x1a00),
3949 .driver_info
= (unsigned long) &dlink_dub_e100_info
,
3951 // Intellinet, ST Lab USB Ethernet
3952 USB_DEVICE (0x0b95, 0x1720),
3953 .driver_info
= (unsigned long) &ax8817x_info
,
3955 // Hawking UF200, TrendNet TU2-ET100
3956 USB_DEVICE (0x07b8, 0x420a),
3957 .driver_info
= (unsigned long) &hawking_uf200_info
,
3959 // Billionton Systems, USB2AR
3960 USB_DEVICE (0x08dd, 0x90ff),
3961 .driver_info
= (unsigned long) &ax8817x_info
,
3964 USB_DEVICE (0x0557, 0x2009),
3965 .driver_info
= (unsigned long) &ax8817x_info
,
3967 // Buffalo LUA-U2-KTX
3968 USB_DEVICE (0x0411, 0x003d),
3969 .driver_info
= (unsigned long) &ax8817x_info
,
3971 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
3972 USB_DEVICE (0x6189, 0x182d),
3973 .driver_info
= (unsigned long) &ax8817x_info
,
3975 // corega FEther USB2-TX
3976 USB_DEVICE (0x07aa, 0x0017),
3977 .driver_info
= (unsigned long) &ax8817x_info
,
3979 // Surecom EP-1427X-2
3980 USB_DEVICE (0x1189, 0x0893),
3981 .driver_info
= (unsigned long) &ax8817x_info
,
3983 // goodway corp usb gwusb2e
3984 USB_DEVICE (0x1631, 0x6200),
3985 .driver_info
= (unsigned long) &ax8817x_info
,
3987 // ASIX AX88772 10/100
3988 USB_DEVICE (0x0b95, 0x7720),
3989 .driver_info
= (unsigned long) &ax88772_info
,
3993 #ifdef CONFIG_USB_EPSON2888
3995 USB_DEVICE (0x0525, 0x2888), // EPSON USB client
3996 .driver_info
= (unsigned long) &epson2888_info
,
4000 #ifdef CONFIG_USB_GENESYS
4002 USB_DEVICE (0x05e3, 0x0502), // GL620USB-A
4003 .driver_info
= (unsigned long) &genelink_info
,
4005 /* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB
4006 * that's half duplex, not currently supported
4010 #ifdef CONFIG_USB_NET1080
4012 USB_DEVICE (0x0525, 0x1080), // NetChip ref design
4013 .driver_info
= (unsigned long) &net1080_info
,
4015 USB_DEVICE (0x06D0, 0x0622), // Laplink Gold
4016 .driver_info
= (unsigned long) &net1080_info
,
4020 #ifdef CONFIG_USB_PL2301
4022 USB_DEVICE (0x067b, 0x0000), // PL-2301
4023 .driver_info
= (unsigned long) &prolific_info
,
4025 USB_DEVICE (0x067b, 0x0001), // PL-2302
4026 .driver_info
= (unsigned long) &prolific_info
,
4030 #ifdef CONFIG_USB_KC2190
4032 USB_DEVICE (0x050f, 0x0190), // KC-190
4033 .driver_info
= (unsigned long) &kc2190_info
,
4037 #ifdef CONFIG_USB_RNDIS
4039 /* RNDIS is MSFT's un-official variant of CDC ACM */
4040 USB_INTERFACE_INFO (USB_CLASS_COMM
, 2 /* ACM */, 0x0ff),
4041 .driver_info
= (unsigned long) &rndis_info
,
4045 #ifdef CONFIG_USB_ARMLINUX
4047 * SA-1100 using standard ARM Linux kernels, or compatible.
4048 * Often used when talking to Linux PDAs (iPaq, Yopy, etc).
4049 * The sa-1100 "usb-eth" driver handles the basic framing.
4051 * PXA25x or PXA210 ... these use a "usb-eth" driver much like
4052 * the sa1100 one, but hardware uses different endpoint numbers.
4054 * Or the Linux "Ethernet" gadget on hardware that can't talk
4055 * CDC Ethernet (e.g., no altsettings), in either of two modes:
4056 * - acting just like the old "usb-eth" firmware, though
4057 * the implementation is different
4058 * - supporting RNDIS as the first/default configuration for
4059 * MS-Windows interop; Linux needs to use the other config
4062 // 1183 = 0x049F, both used as hex values?
4063 // Compaq "Itsy" vendor/product id
4064 USB_DEVICE (0x049F, 0x505A), // usb-eth, or compatible
4065 .driver_info
= (unsigned long) &linuxdev_info
,
4067 USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy"
4068 .driver_info
= (unsigned long) &yopy_info
,
4070 USB_DEVICE (0x8086, 0x07d3), // "blob" bootloader
4071 .driver_info
= (unsigned long) &blob_info
,
4073 // Linux Ethernet/RNDIS gadget on pxa210/25x/26x
4074 // e.g. Gumstix, current OpenZaurus, ...
4075 USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203),
4076 .driver_info
= (unsigned long) &linuxdev_info
,
4080 #if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_CDCETHER)
4082 * SA-1100 based Sharp Zaurus ("collie"), or compatible.
4083 * Same idea as above, but different framing.
4085 * PXA-2xx based models are also lying-about-cdc.
4086 * Some models don't even tell the same lies ...
4088 * NOTE: OpenZaurus versions with 2.6 kernels won't use these entries,
4089 * unlike the older ones with 2.4 "embedix" kernels.
4091 * NOTE: These entries do double-duty, serving as blacklist entries
4092 * whenever Zaurus support isn't enabled, but CDC Ethernet is.
4094 #define ZAURUS_MASTER_INTERFACE \
4095 .bInterfaceClass = USB_CLASS_COMM, \
4096 .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
4097 .bInterfaceProtocol = USB_CDC_PROTO_NONE
4099 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
4100 | USB_DEVICE_ID_MATCH_DEVICE
,
4102 .idProduct
= 0x8004,
4103 ZAURUS_MASTER_INTERFACE
,
4104 .driver_info
= ZAURUS_STRONGARM_INFO
,
4106 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
4107 | USB_DEVICE_ID_MATCH_DEVICE
,
4109 .idProduct
= 0x8005, /* A-300 */
4110 ZAURUS_MASTER_INTERFACE
,
4111 .driver_info
= ZAURUS_PXA_INFO
,
4113 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
4114 | USB_DEVICE_ID_MATCH_DEVICE
,
4116 .idProduct
= 0x8006, /* B-500/SL-5600 */
4117 ZAURUS_MASTER_INTERFACE
,
4118 .driver_info
= ZAURUS_PXA_INFO
,
4120 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
4121 | USB_DEVICE_ID_MATCH_DEVICE
,
4123 .idProduct
= 0x8007, /* C-700 */
4124 ZAURUS_MASTER_INTERFACE
,
4125 .driver_info
= ZAURUS_PXA_INFO
,
4127 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
4128 | USB_DEVICE_ID_MATCH_DEVICE
,
4130 .idProduct
= 0x9031, /* C-750 C-760 */
4131 ZAURUS_MASTER_INTERFACE
,
4132 .driver_info
= ZAURUS_PXA_INFO
,
4134 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
4135 | USB_DEVICE_ID_MATCH_DEVICE
,
4137 .idProduct
= 0x9032, /* SL-6000 */
4138 ZAURUS_MASTER_INTERFACE
,
4139 .driver_info
= ZAURUS_PXA_INFO
,
4141 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
4142 | USB_DEVICE_ID_MATCH_DEVICE
,
4144 /* reported with some C860 units */
4145 .idProduct
= 0x9050, /* C-860 */
4146 ZAURUS_MASTER_INTERFACE
,
4147 .driver_info
= ZAURUS_PXA_INFO
,
4150 #ifdef CONFIG_USB_ZAURUS
4151 /* At least some (reports vary) PXA units have very different lies
4152 * about their standards support: they claim to be cell phones with
4153 * direct access to their radios. (They don't conform to CDC MDLM.)
4156 USB_INTERFACE_INFO (USB_CLASS_COMM
, USB_CDC_SUBCLASS_MDLM
,
4157 USB_CDC_PROTO_NONE
),
4158 .driver_info
= (unsigned long) &bogus_mdlm_info
,
4162 /* Olympus has some models with a Zaurus-compatible option.
4163 * R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
4166 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
4167 | USB_DEVICE_ID_MATCH_DEVICE
,
4169 .idProduct
= 0x0F02, /* R-1000 */
4170 ZAURUS_MASTER_INTERFACE
,
4171 .driver_info
= OLYMPUS_MXL_INFO
,
4175 #ifdef CONFIG_USB_CDCETHER
4177 /* CDC Ether uses two interfaces, not necessarily consecutive.
4178 * We match the main interface, ignoring the optional device
4179 * class so we could handle devices that aren't exclusively
4182 * NOTE: this match must come AFTER entries working around
4183 * bugs/quirks in a given product (like Zaurus, above).
4185 USB_INTERFACE_INFO (USB_CLASS_COMM
, USB_CDC_SUBCLASS_ETHERNET
,
4186 USB_CDC_PROTO_NONE
),
4187 .driver_info
= (unsigned long) &cdc_info
,
4193 MODULE_DEVICE_TABLE (usb
, products
);
4195 static struct usb_driver usbnet_driver
= {
4196 .owner
= THIS_MODULE
,
4197 .name
= driver_name
,
4198 .id_table
= products
,
4199 .probe
= usbnet_probe
,
4200 .disconnect
= usbnet_disconnect
,
4201 .suspend
= usbnet_suspend
,
4202 .resume
= usbnet_resume
,
4205 /* Default ethtool_ops assigned. Devices can override in their bind() routine */
4206 static struct ethtool_ops usbnet_ethtool_ops
= {
4207 .get_drvinfo
= usbnet_get_drvinfo
,
4208 .get_link
= usbnet_get_link
,
4209 .get_msglevel
= usbnet_get_msglevel
,
4210 .set_msglevel
= usbnet_set_msglevel
,
4213 /*-------------------------------------------------------------------------*/
4215 static int __init
usbnet_init (void)
4217 // compiler should optimize these out
4218 BUG_ON (sizeof (((struct sk_buff
*)0)->cb
)
4219 < sizeof (struct skb_data
));
4220 #ifdef CONFIG_USB_CDCETHER
4221 BUG_ON ((sizeof (((struct usbnet
*)0)->data
)
4222 < sizeof (struct cdc_state
)));
4225 random_ether_addr(node_id
);
4227 return usb_register(&usbnet_driver
);
4229 module_init (usbnet_init
);
4231 static void __exit
usbnet_exit (void)
4233 usb_deregister (&usbnet_driver
);
4235 module_exit (usbnet_exit
);
4237 MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>");
4238 MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)");
4239 MODULE_LICENSE ("GPL");