3 * Copyright (C) 2000-2003 by David Brownell <dbrownell@users.sourceforge.net>
4 * Copyright (C) 2002 Pavel Machek <pavel@ucw.cz>
5 * Copyright (C) 2003 David Hollis <dhollis@davehollis.com>
6 * Copyright (c) 2002-2003 TiVo Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * This is a generic "USB networking" framework that works with several
25 * kinds of full and high speed networking devices:
27 * + USB host-to-host "network cables", used for IP-over-USB links.
28 * These are often used for Laplink style connectivity products.
30 * - Belkin, eTEK (interops with Win32 drivers)
31 * - GeneSys GL620USB-A
32 * - NetChip 1080 (interoperates with NetChip Win32 drivers)
33 * - Prolific PL-2301/2302 (replaces "plusb" driver)
35 * + Smart USB devices can support such links directly, using Internet
36 * standard protocols instead of proprietary host-to-device links.
37 * - Linux PDAs like iPaq, Yopy, and Zaurus
38 * - The BLOB boot loader (for diskless booting)
39 * - Linux "gadgets", perhaps using PXA-2xx or Net2280 controllers
40 * - Devices using EPSON's sample USB firmware
41 * - CDC-Ethernet class devices, such as many cable modems
43 * + Adapters to networks such as Ethernet.
44 * - AX8817X based USB 2.0 products
46 * Links to these devices can be bridged using Linux Ethernet bridging.
47 * With minor exceptions, these all use similar USB framing for network
48 * traffic, but need different protocols for control traffic.
50 * USB devices can implement their side of this protocol at the cost
51 * of two bulk endpoints; it's not restricted to "cable" applications.
52 * See the SA1110, Zaurus, or EPSON device/client support in this driver;
53 * slave/target drivers such as "usb-eth" (on most SA-1100 PDAs) or
54 * "g_ether" (in the Linux "gadget" framework) implement that behavior
60 * 13-sep-2000 experimental, new
61 * 10-oct-2000 usb_device_id table created.
62 * 28-oct-2000 misc fixes; mostly, discard more TTL-mangled rx packets.
63 * 01-nov-2000 usb_device_id table and probing api update by
64 * Adam J. Richter <adam@yggdrasil.com>.
65 * 18-dec-2000 (db) tx watchdog, "net1080" renaming to "usbnet", device_info
66 * and prolific support, isolate net1080-specific bits, cleanup.
67 * fix unlink_urbs oops in D3 PM resume code path.
69 * 02-feb-2001 (db) fix tx skb sharing, packet length, match_flags, ...
70 * 08-feb-2001 stubbed in "linuxdev", maybe the SA-1100 folk can use it;
71 * AnchorChips 2720 support (from spec) for testing;
72 * fix bit-ordering problem with ethernet multicast addr
73 * 19-feb-2001 Support for clearing halt conditions. SA1100 UDC support
74 * updates. Oleg Drokin (green@iXcelerator.com)
75 * 25-mar-2001 More SA-1100 updates, including workaround for ip problem
76 * expecting cleared skb->cb and framing change to match latest
77 * handhelds.org version (Oleg). Enable device IDs from the
78 * Win32 Belkin driver; other cleanups (db).
79 * 16-jul-2001 Bugfixes for uhci oops-on-unplug, Belkin support, various
80 * cleanups for problems not yet seen in the field. (db)
81 * 17-oct-2001 Handle "Advance USBNET" product, like Belkin/eTEK devices,
82 * from Ioannis Mavroukakis <i.mavroukakis@btinternet.com>;
83 * rx unlinks somehow weren't async; minor cleanup.
84 * 03-nov-2001 Merged GeneSys driver; original code from Jiun-Jie Huang
85 * <huangjj@genesyslogic.com.tw>, updated by Stanislav Brabec
86 * <utx@penguin.cz>. Made framing options (NetChip/GeneSys)
87 * tie mostly to (sub)driver info. Workaround some PL-2302
88 * chips that seem to reject SET_INTERFACE requests.
90 * 06-apr-2002 Added ethtool support, based on a patch from Brad Hards.
91 * Level of diagnostics is more configurable; they use device
92 * location (usb_device->devpath) instead of address (2.5).
93 * For tx_fixup, memflags can't be NOIO.
94 * 07-may-2002 Generalize/cleanup keventd support, handling rx stalls (mostly
95 * for USB 2.0 TTs) and memory shortages (potential) too. (db)
96 * Use "locally assigned" IEEE802 address space. (Brad Hards)
97 * 18-oct-2002 Support for Zaurus (Pavel Machek), related cleanup (db).
98 * 14-dec-2002 Remove Zaurus-private crc32 code (Pavel); 2.5 oops fix,
99 * cleanups and stubbed PXA-250 support (db), fix for framing
100 * issues on Z, net1080, and gl620a (Toby Milne)
102 * 31-mar-2003 Use endpoint descriptors: high speed support, simpler sa1100
103 * vs pxa25x, and CDC Ethernet. Throttle down log floods on
104 * disconnect; other cleanups. (db) Flush net1080 fifos
105 * after several sequential framing errors. (Johannes Erdfelt)
106 * 22-aug-2003 AX8817X support (Dave Hollis).
107 * 14-jun-2004 Trivial patch for AX8817X based Buffalo LUA-U2-KTX in Japan
110 *-------------------------------------------------------------------------*/
112 // #define DEBUG // error path messages, extra info
113 // #define VERBOSE // more; success messages
115 #include <linux/config.h>
116 #ifdef CONFIG_USB_DEBUG
119 #include <linux/module.h>
120 #include <linux/kmod.h>
121 #include <linux/sched.h>
122 #include <linux/init.h>
123 #include <linux/netdevice.h>
124 #include <linux/etherdevice.h>
125 #include <linux/random.h>
126 #include <linux/ethtool.h>
127 #include <linux/workqueue.h>
128 #include <linux/mii.h>
129 #include <asm/uaccess.h>
130 #include <asm/unaligned.h>
131 #include <linux/usb.h>
133 #include <asm/scatterlist.h>
134 #include <linux/mm.h>
135 #include <linux/dma-mapping.h>
137 #define DRIVER_VERSION "25-Aug-2003"
140 /*-------------------------------------------------------------------------*/
143 * Nineteen USB 1.1 max size bulk transactions per frame (ms), max.
144 * Several dozen bytes of IPv4 data can fit in two such transactions.
145 * One maximum size Ethernet packet takes twenty four of them.
146 * For high speed, each frame comfortably fits almost 36 max size
147 * Ethernet packets (so queues should be bigger).
149 #define RX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
150 #define TX_QLEN(dev) (((dev)->udev->speed == USB_SPEED_HIGH) ? 60 : 4)
152 // packets are always ethernet inside
153 // ... except they can be bigger (limit of 64K with NetChip framing)
154 #define MIN_PACKET sizeof(struct ethhdr)
155 #define MAX_PACKET 32768
157 // reawaken network queue this soon after stopping; else watchdog barks
158 #define TX_TIMEOUT_JIFFIES (5*HZ)
160 // throttle rx/tx briefly after some faults, so khubd might disconnect()
161 // us (it polls at HZ/4 usually) before we report too many false errors.
162 #define THROTTLE_JIFFIES (HZ/8)
164 // for vendor-specific control operations
165 #define CONTROL_TIMEOUT_MS (500) /* msec */
166 #define CONTROL_TIMEOUT_JIFFIES ((CONTROL_TIMEOUT_MS * HZ)/1000)
169 #define UNLINK_TIMEOUT_MS 3
171 /*-------------------------------------------------------------------------*/
173 // randomly generated ethernet address
174 static u8 node_id
[ETH_ALEN
];
176 // state we keep for each device we handle
179 struct usb_device
*udev
;
180 struct driver_info
*driver_info
;
181 wait_queue_head_t
*wait
;
183 // i/o info: pipes etc
186 struct timer_list delay
;
188 // protocol/interface state
189 struct net_device
*net
;
190 struct net_device_stats stats
;
192 unsigned long data
[5];
194 struct mii_if_info mii
;
196 // various kinds of pending driver work
197 struct sk_buff_head rxq
;
198 struct sk_buff_head txq
;
199 struct sk_buff_head done
;
200 struct tasklet_struct bh
;
202 struct work_struct kevent
;
204 # define EVENT_TX_HALT 0
205 # define EVENT_RX_HALT 1
206 # define EVENT_RX_MEMORY 2
209 // device-specific info used by the driver
214 /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
215 #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
216 #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
217 #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
218 #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
220 #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
221 #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
223 /* init device ... can sleep, or cause probe() failure */
224 int (*bind
)(struct usbnet
*, struct usb_interface
*);
226 /* cleanup device ... can sleep, but can't fail */
227 void (*unbind
)(struct usbnet
*, struct usb_interface
*);
229 /* reset device ... can sleep */
230 int (*reset
)(struct usbnet
*);
232 /* see if peer is connected ... can sleep */
233 int (*check_connect
)(struct usbnet
*);
235 /* fixup rx packet (strip framing) */
236 int (*rx_fixup
)(struct usbnet
*dev
, struct sk_buff
*skb
);
238 /* fixup tx packet (add framing) */
239 struct sk_buff
*(*tx_fixup
)(struct usbnet
*dev
,
240 struct sk_buff
*skb
, int flags
);
242 // FIXME -- also an interrupt mechanism
243 // useful for at least PL2301/2302 and GL620USB-A
244 // and CDC use them to report 'is it connected' changes
246 /* for new devices, use the descriptor-reading code instead */
247 int in
; /* rx endpoint */
248 int out
; /* tx endpoint */
250 unsigned long data
; /* Misc driver specific data */
253 // we record the state for each of our queued skbs
257 rx_start
, rx_done
, rx_cleanup
260 struct skb_data
{ // skb->cb is one of these
263 enum skb_state state
;
267 static const char driver_name
[] = "usbnet";
269 /* use ethtool to change the level for any given device */
270 static int msg_level
= 1;
271 module_param (msg_level
, int, 0);
272 MODULE_PARM_DESC (msg_level
, "Initial message level (default = 1)");
275 #define RUN_CONTEXT (in_irq () ? "in_irq" \
276 : (in_interrupt () ? "in_interrupt" : "can sleep"))
279 #define devdbg(usbnet, fmt, arg...) \
280 printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
282 #define devdbg(usbnet, fmt, arg...) do {} while(0)
285 #define deverr(usbnet, fmt, arg...) \
286 printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
287 #define devwarn(usbnet, fmt, arg...) \
288 printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
290 #define devinfo(usbnet, fmt, arg...) \
291 do { if ((usbnet)->msg_level >= 1) \
292 printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
295 /*-------------------------------------------------------------------------*/
297 static void usbnet_get_drvinfo (struct net_device
*, struct ethtool_drvinfo
*);
298 static u32
usbnet_get_link (struct net_device
*);
299 static u32
usbnet_get_msglevel (struct net_device
*);
300 static void usbnet_set_msglevel (struct net_device
*, u32
);
302 /* mostly for PDA style devices, which are always connected if present */
303 static int always_connected (struct usbnet
*dev
)
308 /* handles CDC Ethernet and many other network "bulk data" interfaces */
310 get_endpoints (struct usbnet
*dev
, struct usb_interface
*intf
)
313 struct usb_host_interface
*alt
;
314 struct usb_host_endpoint
*in
, *out
;
316 for (tmp
= 0; tmp
< intf
->num_altsetting
; tmp
++) {
320 alt
= intf
->altsetting
+ tmp
;
322 /* take the first altsetting with in-bulk + out-bulk;
323 * ignore other endpoints and altsetttings.
325 for (ep
= 0; ep
< alt
->desc
.bNumEndpoints
; ep
++) {
326 struct usb_host_endpoint
*e
;
328 e
= alt
->endpoint
+ ep
;
329 if (e
->desc
.bmAttributes
!= USB_ENDPOINT_XFER_BULK
)
331 if (e
->desc
.bEndpointAddress
& USB_DIR_IN
) {
345 if (alt
->desc
.bAlternateSetting
!= 0
346 || !(dev
->driver_info
->flags
& FLAG_NO_SETINT
)) {
347 tmp
= usb_set_interface (dev
->udev
, alt
->desc
.bInterfaceNumber
,
348 alt
->desc
.bAlternateSetting
);
353 dev
->in
= usb_rcvbulkpipe (dev
->udev
,
354 in
->desc
.bEndpointAddress
& USB_ENDPOINT_NUMBER_MASK
);
355 dev
->out
= usb_sndbulkpipe (dev
->udev
,
356 out
->desc
.bEndpointAddress
& USB_ENDPOINT_NUMBER_MASK
);
360 static void skb_return (struct usbnet
*dev
, struct sk_buff
*skb
)
365 skb
->protocol
= eth_type_trans (skb
, dev
->net
);
366 dev
->stats
.rx_packets
++;
367 dev
->stats
.rx_bytes
+= skb
->len
;
370 devdbg (dev
, "< rx, len %d, type 0x%x",
371 skb
->len
+ sizeof (struct ethhdr
), skb
->protocol
);
373 memset (skb
->cb
, 0, sizeof (struct skb_data
));
374 status
= netif_rx (skb
);
375 if (status
!= NET_RX_SUCCESS
)
376 devdbg (dev
, "netif_rx status %d", status
);
380 #ifdef CONFIG_USB_ALI_M5632
381 #define HAVE_HARDWARE
383 /*-------------------------------------------------------------------------
385 * ALi M5632 driver ... does high speed
387 *-------------------------------------------------------------------------*/
389 static const struct driver_info ali_m5632_info
= {
390 .description
= "ALi M5632",
397 #ifdef CONFIG_USB_AN2720
398 #define HAVE_HARDWARE
400 /*-------------------------------------------------------------------------
402 * AnchorChips 2720 driver ... http://www.cypress.com
404 * This doesn't seem to have a way to detect whether the peer is
405 * connected, or need any reset handshaking. It's got pretty big
406 * internal buffers (handles most of a frame's worth of data).
407 * Chip data sheets don't describe any vendor control messages.
409 *-------------------------------------------------------------------------*/
411 static const struct driver_info an2720_info
= {
412 .description
= "AnchorChips/Cypress 2720",
413 // no reset available!
414 // no check_connect available!
416 .in
= 2, .out
= 2, // direction distinguishes these
419 #endif /* CONFIG_USB_AN2720 */
422 #ifdef CONFIG_USB_AX8817X
423 /* ASIX AX8817X based USB 2.0 Ethernet Devices */
425 #define HAVE_HARDWARE
428 #include <linux/crc32.h>
430 #define AX_CMD_SET_SW_MII 0x06
431 #define AX_CMD_READ_MII_REG 0x07
432 #define AX_CMD_WRITE_MII_REG 0x08
433 #define AX_CMD_SET_HW_MII 0x0a
434 #define AX_CMD_READ_EEPROM 0x0b
435 #define AX_CMD_WRITE_EEPROM 0x0c
436 #define AX_CMD_WRITE_RX_CTL 0x10
437 #define AX_CMD_READ_IPG012 0x11
438 #define AX_CMD_WRITE_IPG0 0x12
439 #define AX_CMD_WRITE_IPG1 0x13
440 #define AX_CMD_WRITE_IPG2 0x14
441 #define AX_CMD_WRITE_MULTI_FILTER 0x16
442 #define AX_CMD_READ_NODE_ID 0x17
443 #define AX_CMD_READ_PHY_ID 0x19
444 #define AX_CMD_WRITE_MEDIUM_MODE 0x1b
445 #define AX_CMD_READ_MONITOR_MODE 0x1c
446 #define AX_CMD_WRITE_MONITOR_MODE 0x1d
447 #define AX_CMD_WRITE_GPIOS 0x1f
449 #define AX_MONITOR_MODE 0x01
450 #define AX_MONITOR_LINK 0x02
451 #define AX_MONITOR_MAGIC 0x04
452 #define AX_MONITOR_HSFS 0x10
454 #define AX_MCAST_FILTER_SIZE 8
455 #define AX_MAX_MCAST 64
457 #define AX_INTERRUPT_BUFSIZE 8
459 /* This structure cannot exceed sizeof(unsigned long [5]) AKA 20 bytes */
460 struct ax8817x_data
{
461 u8 multi_filter
[AX_MCAST_FILTER_SIZE
];
466 static int ax8817x_read_cmd(struct usbnet
*dev
, u8 cmd
, u16 value
, u16 index
,
467 u16 size
, void *data
)
469 return usb_control_msg(
471 usb_rcvctrlpipe(dev
->udev
, 0),
473 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
478 CONTROL_TIMEOUT_JIFFIES
);
481 static int ax8817x_write_cmd(struct usbnet
*dev
, u8 cmd
, u16 value
, u16 index
,
482 u16 size
, void *data
)
484 return usb_control_msg(
486 usb_sndctrlpipe(dev
->udev
, 0),
488 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
493 CONTROL_TIMEOUT_JIFFIES
);
496 static void ax8817x_async_cmd_callback(struct urb
*urb
, struct pt_regs
*regs
)
498 struct usb_ctrlrequest
*req
= (struct usb_ctrlrequest
*)urb
->context
;
501 printk(KERN_DEBUG
"ax8817x_async_cmd_callback() failed with %d",
508 static void ax8817x_interrupt_complete(struct urb
*urb
, struct pt_regs
*regs
)
510 struct usbnet
*dev
= (struct usbnet
*)urb
->context
;
511 struct ax8817x_data
*data
= (struct ax8817x_data
*)&dev
->data
;
514 if (urb
->status
< 0) {
515 printk(KERN_DEBUG
"ax8817x_interrupt_complete() failed with %d",
518 if (data
->int_buf
[5] == 0x90) {
519 link
= data
->int_buf
[2] & 0x01;
520 if (netif_carrier_ok(dev
->net
) != link
) {
522 netif_carrier_on(dev
->net
);
524 netif_carrier_off(dev
->net
);
525 devdbg(dev
, "ax8817x - Link Status is: %d", link
);
528 usb_submit_urb(data
->int_urb
, GFP_KERNEL
);
532 static void ax8817x_write_cmd_async(struct usbnet
*dev
, u8 cmd
, u16 value
, u16 index
,
533 u16 size
, void *data
)
535 struct usb_ctrlrequest
*req
;
539 if ((urb
= usb_alloc_urb(0, GFP_ATOMIC
)) == NULL
) {
540 devdbg(dev
, "Error allocating URB in write_cmd_async!");
544 if ((req
= kmalloc(sizeof(struct usb_ctrlrequest
), GFP_ATOMIC
)) == NULL
) {
545 deverr(dev
, "Failed to allocate memory for control request");
550 req
->bRequestType
= USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
;
552 req
->wValue
= cpu_to_le16(value
);
553 req
->wIndex
= cpu_to_le16(index
);
554 req
->wLength
= cpu_to_le16(size
);
556 usb_fill_control_urb(urb
, dev
->udev
,
557 usb_sndctrlpipe(dev
->udev
, 0),
558 (void *)req
, data
, size
,
559 ax8817x_async_cmd_callback
, req
);
561 if((status
= usb_submit_urb(urb
, GFP_ATOMIC
)) < 0) {
562 deverr(dev
, "Error submitting the control message: status=%d", status
);
568 static void ax8817x_set_multicast(struct net_device
*net
)
570 struct usbnet
*dev
= (struct usbnet
*) net
->priv
;
571 struct ax8817x_data
*data
= (struct ax8817x_data
*)&dev
->data
;
574 if (net
->flags
& IFF_PROMISC
) {
576 } else if (net
->flags
& IFF_ALLMULTI
577 || net
->mc_count
> AX_MAX_MCAST
) {
579 } else if (net
->mc_count
== 0) {
580 /* just broadcast and directed */
582 /* We use the 20 byte dev->data
583 * for our 8 byte filter buffer
584 * to avoid allocating memory that
585 * is tricky to free later */
586 struct dev_mc_list
*mc_list
= net
->mc_list
;
590 memset(data
->multi_filter
, 0, AX_MCAST_FILTER_SIZE
);
592 /* Build the multicast hash filter. */
593 for (i
= 0; i
< net
->mc_count
; i
++) {
596 mc_list
->dmi_addr
) >> 26;
597 data
->multi_filter
[crc_bits
>> 3] |=
599 mc_list
= mc_list
->next
;
602 ax8817x_write_cmd_async(dev
, AX_CMD_WRITE_MULTI_FILTER
, 0, 0,
603 AX_MCAST_FILTER_SIZE
, data
->multi_filter
);
608 ax8817x_write_cmd_async(dev
, AX_CMD_WRITE_RX_CTL
, rx_ctl
, 0, 0, NULL
);
611 static int ax8817x_mdio_read(struct net_device
*netdev
, int phy_id
, int loc
)
613 struct usbnet
*dev
= netdev
->priv
;
617 ax8817x_write_cmd(dev
, AX_CMD_SET_SW_MII
, 0, 0, 0, &buf
);
618 ax8817x_read_cmd(dev
, AX_CMD_READ_MII_REG
, phy_id
, (__u16
)loc
, 2, (u16
*)&res
);
619 ax8817x_write_cmd(dev
, AX_CMD_SET_HW_MII
, 0, 0, 0, &buf
);
624 static void ax8817x_mdio_write(struct net_device
*netdev
, int phy_id
, int loc
, int val
)
626 struct usbnet
*dev
= netdev
->priv
;
630 ax8817x_write_cmd(dev
, AX_CMD_SET_SW_MII
, 0, 0, 0, &buf
);
631 ax8817x_write_cmd(dev
, AX_CMD_WRITE_MII_REG
, phy_id
, (__u16
)loc
, 2, (u16
*)&res
);
632 ax8817x_write_cmd(dev
, AX_CMD_SET_HW_MII
, 0, 0, 0, &buf
);
635 static void ax8817x_get_wol(struct net_device
*net
, struct ethtool_wolinfo
*wolinfo
)
637 struct usbnet
*dev
= (struct usbnet
*)net
->priv
;
640 if (ax8817x_read_cmd(dev
, AX_CMD_READ_MONITOR_MODE
, 0, 0, 1, &opt
) < 0) {
641 wolinfo
->supported
= 0;
642 wolinfo
->wolopts
= 0;
645 wolinfo
->supported
= WAKE_PHY
| WAKE_MAGIC
;
646 wolinfo
->wolopts
= 0;
647 if (opt
& AX_MONITOR_MODE
) {
648 if (opt
& AX_MONITOR_LINK
)
649 wolinfo
->wolopts
|= WAKE_PHY
;
650 if (opt
& AX_MONITOR_MAGIC
)
651 wolinfo
->wolopts
|= WAKE_MAGIC
;
655 static int ax8817x_set_wol(struct net_device
*net
, struct ethtool_wolinfo
*wolinfo
)
657 struct usbnet
*dev
= (struct usbnet
*)net
->priv
;
661 if (wolinfo
->wolopts
& WAKE_PHY
)
662 opt
|= AX_MONITOR_LINK
;
663 if (wolinfo
->wolopts
& WAKE_MAGIC
)
664 opt
|= AX_MONITOR_MAGIC
;
666 opt
|= AX_MONITOR_MODE
;
668 if (ax8817x_write_cmd(dev
, AX_CMD_WRITE_MONITOR_MODE
,
669 opt
, 0, 0, &buf
) < 0)
675 static int ax8817x_get_eeprom(struct net_device
*net
,
676 struct ethtool_eeprom
*eeprom
, u8
*data
)
678 struct usbnet
*dev
= (struct usbnet
*)net
->priv
;
679 u16
*ebuf
= (u16
*)data
;
682 /* Crude hack to ensure that we don't overwrite memory
683 * if an odd length is supplied
688 /* ax8817x returns 2 bytes from eeprom on read */
689 for (i
=0; i
< eeprom
->len
/ 2; i
++) {
690 if (ax8817x_read_cmd(dev
, AX_CMD_READ_EEPROM
,
691 eeprom
->offset
+ i
, 0, 2, &ebuf
[i
]) < 0)
697 static void ax8817x_get_drvinfo (struct net_device
*net
,
698 struct ethtool_drvinfo
*info
)
700 /* Inherit standard device info */
701 usbnet_get_drvinfo(net
, info
);
702 info
->eedump_len
= 0x3e;
705 static int ax8817x_get_settings(struct net_device
*net
, struct ethtool_cmd
*cmd
)
707 struct usbnet
*dev
= (struct usbnet
*)net
->priv
;
709 return mii_ethtool_gset(&dev
->mii
,cmd
);
712 static int ax8817x_set_settings(struct net_device
*net
, struct ethtool_cmd
*cmd
)
714 struct usbnet
*dev
= (struct usbnet
*)net
->priv
;
716 return mii_ethtool_sset(&dev
->mii
,cmd
);
719 /* We need to override some ethtool_ops so we require our
720 own structure so we don't interfere with other usbnet
721 devices that may be connected at the same time. */
722 static struct ethtool_ops ax8817x_ethtool_ops
= {
723 .get_drvinfo
= ax8817x_get_drvinfo
,
724 .get_link
= ethtool_op_get_link
,
725 .get_msglevel
= usbnet_get_msglevel
,
726 .set_msglevel
= usbnet_set_msglevel
,
727 .get_wol
= ax8817x_get_wol
,
728 .set_wol
= ax8817x_set_wol
,
729 .get_eeprom
= ax8817x_get_eeprom
,
730 .get_settings
= ax8817x_get_settings
,
731 .set_settings
= ax8817x_set_settings
,
734 static int ax8817x_bind(struct usbnet
*dev
, struct usb_interface
*intf
)
739 unsigned long gpio_bits
= dev
->driver_info
->data
;
740 struct ax8817x_data
*data
= (struct ax8817x_data
*)dev
->data
;
742 dev
->in
= usb_rcvbulkpipe(dev
->udev
, 3);
743 dev
->out
= usb_sndbulkpipe(dev
->udev
, 2);
746 if ((data
->int_urb
= usb_alloc_urb (0, GFP_KERNEL
)) == 0) {
747 dbg ("%s: cannot allocate interrupt URB",
752 if ((data
->int_buf
= kmalloc(AX_INTERRUPT_BUFSIZE
, GFP_KERNEL
)) == NULL
) {
753 dbg ("%s: cannot allocate memory for interrupt buffer",
755 usb_free_urb(data
->int_urb
);
758 memset(data
->int_buf
, 0, AX_INTERRUPT_BUFSIZE
);
760 usb_fill_int_urb (data
->int_urb
, dev
->udev
,
761 usb_rcvintpipe (dev
->udev
, 1),
762 data
->int_buf
, AX_INTERRUPT_BUFSIZE
,
763 ax8817x_interrupt_complete
, dev
,
764 dev
->udev
->speed
== USB_SPEED_HIGH
? 8 : 100);
766 /* Toggle the GPIOs in a manufacturer/model specific way */
767 for (i
= 2; i
>= 0; i
--) {
768 if ((ret
= ax8817x_write_cmd(dev
, AX_CMD_WRITE_GPIOS
,
769 (gpio_bits
>> (i
* 8)) & 0xff, 0, 0,
775 if ((ret
= ax8817x_write_cmd(dev
, AX_CMD_WRITE_RX_CTL
, 0x80, 0, 0, buf
)) < 0) {
776 dbg("send AX_CMD_WRITE_RX_CTL failed: %d", ret
);
780 /* Get the MAC address */
781 memset(buf
, 0, ETH_ALEN
);
782 if ((ret
= ax8817x_read_cmd(dev
, AX_CMD_READ_NODE_ID
, 0, 0, 6, buf
)) < 0) {
783 dbg("read AX_CMD_READ_NODE_ID failed: %d", ret
);
786 memcpy(dev
->net
->dev_addr
, buf
, ETH_ALEN
);
789 if ((ret
= ax8817x_read_cmd(dev
, AX_CMD_READ_PHY_ID
, 0, 0, 2, buf
)) < 0) {
790 dbg("error on read AX_CMD_READ_PHY_ID: %02x", ret
);
792 } else if (ret
< 2) {
793 /* this should always return 2 bytes */
794 dbg("AX_CMD_READ_PHY_ID returned less than 2 bytes: ret=%02x", ret
);
798 /* Initialize MII structure */
799 dev
->mii
.dev
= dev
->net
;
800 dev
->mii
.mdio_read
= ax8817x_mdio_read
;
801 dev
->mii
.mdio_write
= ax8817x_mdio_write
;
802 dev
->mii
.phy_id_mask
= 0x3f;
803 dev
->mii
.reg_num_mask
= 0x1f;
804 dev
->mii
.phy_id
= buf
[1];
806 dev
->net
->set_multicast_list
= ax8817x_set_multicast
;
807 dev
->net
->ethtool_ops
= &ax8817x_ethtool_ops
;
809 ax8817x_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_BMCR
,
810 cpu_to_le16(BMCR_RESET
));
811 ax8817x_mdio_write(dev
->net
, dev
->mii
.phy_id
, MII_ADVERTISE
,
812 cpu_to_le16(ADVERTISE_ALL
| ADVERTISE_CSMA
| 0x0400));
813 mii_nway_restart(&dev
->mii
);
815 if((ret
= usb_submit_urb(data
->int_urb
, GFP_KERNEL
)) < 0) {
816 dbg("Failed to submit interrupt URB: %02x", ret
);
817 usb_free_urb(data
->int_urb
);
824 static void ax8817x_unbind(struct usbnet
*dev
, struct usb_interface
*intf
)
826 struct ax8817x_data
*data
= (struct ax8817x_data
*)dev
->data
;
828 usb_unlink_urb(data
->int_urb
);
829 usb_free_urb(data
->int_urb
);
830 kfree(data
->int_buf
);
833 static const struct driver_info ax8817x_info
= {
834 .description
= "ASIX AX8817x USB 2.0 Ethernet",
835 .bind
= ax8817x_bind
,
836 .unbind
= ax8817x_unbind
,
841 static const struct driver_info dlink_dub_e100_info
= {
842 .description
= "DLink DUB-E100 USB Ethernet",
843 .bind
= ax8817x_bind
,
844 .unbind
= ax8817x_unbind
,
849 static const struct driver_info netgear_fa120_info
= {
850 .description
= "Netgear FA-120 USB Ethernet",
851 .bind
= ax8817x_bind
,
852 .unbind
= ax8817x_unbind
,
857 static const struct driver_info hawking_uf200_info
= {
858 .description
= "Hawking UF200 USB Ethernet",
859 .bind
= ax8817x_bind
,
860 .unbind
= ax8817x_unbind
,
865 #endif /* CONFIG_USB_AX8817X */
869 #ifdef CONFIG_USB_BELKIN
870 #define HAVE_HARDWARE
872 /*-------------------------------------------------------------------------
874 * Belkin F5U104 ... two NetChip 2280 devices + Atmel microcontroller
876 * ... also two eTEK designs, including one sold as "Advance USBNET"
878 *-------------------------------------------------------------------------*/
880 static const struct driver_info belkin_info
= {
881 .description
= "Belkin, eTEK, or compatible",
884 #endif /* CONFIG_USB_BELKIN */
888 /*-------------------------------------------------------------------------
890 * Communications Device Class declarations.
891 * Used by CDC Ethernet, and some CDC variants
893 *-------------------------------------------------------------------------*/
895 #ifdef CONFIG_USB_CDCETHER
896 #define NEED_GENERIC_CDC
899 #ifdef CONFIG_USB_ZAURUS
900 /* Ethernet variant uses funky framing, broken ethernet addressing */
901 #define NEED_GENERIC_CDC
904 #ifdef CONFIG_USB_RNDIS
905 /* ACM variant uses even funkier framing, complex control RPC scheme */
906 #define NEED_GENERIC_CDC
910 #ifdef NEED_GENERIC_CDC
912 /* "Header Functional Descriptor" from CDC spec 5.2.3.1 */
916 u8 bDescriptorSubType
;
919 } __attribute__ ((packed
));
921 /* "Union Functional Descriptor" from CDC spec 5.2.3.X */
925 u8 bDescriptorSubType
;
927 u8 bMasterInterface0
;
929 /* ... and there could be other slave interfaces */
930 } __attribute__ ((packed
));
932 /* "Ethernet Networking Functional Descriptor" from CDC spec 5.2.3.16 */
936 u8 bDescriptorSubType
;
939 u32 bmEthernetStatistics
;
940 __le16 wMaxSegmentSize
;
941 __le16 wNumberMCFilters
;
942 u8 bNumberPowerFilters
;
943 } __attribute__ ((packed
));
946 struct header_desc
*header
;
947 struct union_desc
*u
;
948 struct ether_desc
*ether
;
949 struct usb_interface
*control
;
950 struct usb_interface
*data
;
953 static struct usb_driver usbnet_driver
;
956 * probes control interface, claims data interface, collects the bulk
957 * endpoints, activates data interface (if needed), maybe sets MTU.
958 * all pure cdc, except for certain firmware workarounds.
960 static int generic_cdc_bind (struct usbnet
*dev
, struct usb_interface
*intf
)
962 u8
*buf
= intf
->cur_altsetting
->extra
;
963 int len
= intf
->cur_altsetting
->extralen
;
964 struct usb_interface_descriptor
*d
;
965 struct cdc_state
*info
= (void *) &dev
->data
;
969 if (sizeof dev
->data
< sizeof *info
)
972 /* expect strict spec conformance for the descriptors, but
973 * cope with firmware which stores them in the wrong place
975 if (len
== 0 && dev
->udev
->actconfig
->extralen
) {
976 /* Motorola SB4100 (and others: Brad Hards says it's
977 * from a Broadcom design) put CDC descriptors here
979 buf
= dev
->udev
->actconfig
->extra
;
980 len
= dev
->udev
->actconfig
->extralen
;
983 "CDC descriptors on config\n");
986 /* this assumes that if there's a non-RNDIS vendor variant
987 * of cdc-acm, it'll fail RNDIS requests cleanly.
989 rndis
= (intf
->cur_altsetting
->desc
.bInterfaceProtocol
== 0xff);
991 memset (info
, 0, sizeof *info
);
992 info
->control
= intf
;
994 if (buf
[1] != USB_DT_CS_INTERFACE
)
997 /* use bDescriptorSubType to identify the CDC descriptors.
998 * We expect devices with CDC header and union descriptors.
999 * For CDC Ethernet we need the ethernet descriptor.
1000 * For RNDIS, ignore two (pointless) CDC modem descriptors
1001 * in favor of a complicated OID-based RPC scheme doing what
1002 * CDC Ethernet achieves with a simple descriptor.
1005 case 0x00: /* Header, mostly useless */
1007 dev_dbg (&intf
->dev
, "extra CDC header\n");
1010 info
->header
= (void *) buf
;
1011 if (info
->header
->bLength
!= sizeof *info
->header
) {
1012 dev_dbg (&intf
->dev
, "CDC header len %u\n",
1013 info
->header
->bLength
);
1017 case 0x06: /* Union (groups interfaces) */
1019 dev_dbg (&intf
->dev
, "extra CDC union\n");
1022 info
->u
= (void *) buf
;
1023 if (info
->u
->bLength
!= sizeof *info
->u
) {
1024 dev_dbg (&intf
->dev
, "CDC union len %u\n",
1029 /* we need a master/control interface (what we're
1030 * probed with) and a slave/data interface; union
1031 * descriptors sort this all out.
1033 info
->control
= usb_ifnum_to_if(dev
->udev
,
1034 info
->u
->bMasterInterface0
);
1035 info
->data
= usb_ifnum_to_if(dev
->udev
,
1036 info
->u
->bSlaveInterface0
);
1037 if (!info
->control
|| !info
->data
) {
1038 dev_dbg (&intf
->dev
,
1039 "master #%u/%p slave #%u/%p\n",
1040 info
->u
->bMasterInterface0
,
1042 info
->u
->bSlaveInterface0
,
1046 if (info
->control
!= intf
) {
1047 dev_dbg (&intf
->dev
, "bogus CDC Union\n");
1048 /* Ambit USB Cable Modem (and maybe others)
1049 * interchanges master and slave interface.
1051 if (info
->data
== intf
) {
1052 info
->data
= info
->control
;
1053 info
->control
= intf
;
1058 /* a data interface altsetting does the real i/o */
1059 d
= &info
->data
->cur_altsetting
->desc
;
1060 if (d
->bInterfaceClass
!= USB_CLASS_CDC_DATA
) {
1061 dev_dbg (&intf
->dev
, "slave class %u\n",
1062 d
->bInterfaceClass
);
1066 case 0x0F: /* Ethernet Networking */
1068 dev_dbg (&intf
->dev
, "extra CDC ether\n");
1071 info
->ether
= (void *) buf
;
1072 if (info
->ether
->bLength
!= sizeof *info
->ether
) {
1073 dev_dbg (&intf
->dev
, "CDC ether len %u\n",
1077 dev
->net
->mtu
= le16_to_cpup (
1078 &info
->ether
->wMaxSegmentSize
)
1080 /* because of Zaurus, we may be ignoring the host
1081 * side link address we were given.
1086 len
-= buf
[0]; /* bLength */
1090 if (!info
->header
|| !info
->u
|| (!rndis
&& !info
->ether
)) {
1091 dev_dbg (&intf
->dev
, "missing cdc %s%s%sdescriptor\n",
1092 info
->header
? "" : "header ",
1093 info
->u
? "" : "union ",
1094 info
->ether
? "" : "ether ");
1098 /* claim data interface and set it up ... with side effects.
1099 * network traffic can't flow until an altsetting is enabled.
1101 status
= usb_driver_claim_interface (&usbnet_driver
, info
->data
, dev
);
1104 status
= get_endpoints (dev
, info
->data
);
1106 /* ensure immediate exit from usbnet_disconnect */
1107 usb_set_intfdata(info
->data
, NULL
);
1108 usb_driver_release_interface (&usbnet_driver
, info
->data
);
1114 dev_info (&dev
->udev
->dev
, "bad CDC descriptors\n");
1118 static void cdc_unbind (struct usbnet
*dev
, struct usb_interface
*intf
)
1120 struct cdc_state
*info
= (void *) &dev
->data
;
1122 /* disconnect master --> disconnect slave */
1123 if (intf
== info
->control
&& info
->data
) {
1124 /* ensure immediate exit from usbnet_disconnect */
1125 usb_set_intfdata(info
->data
, NULL
);
1126 usb_driver_release_interface (&usbnet_driver
, info
->data
);
1130 /* and vice versa (just in case) */
1131 else if (intf
== info
->data
&& info
->control
) {
1132 /* ensure immediate exit from usbnet_disconnect */
1133 usb_set_intfdata(info
->control
, NULL
);
1134 usb_driver_release_interface (&usbnet_driver
, info
->control
);
1135 info
->control
= NULL
;
1139 #endif /* NEED_GENERIC_CDC */
1142 #ifdef CONFIG_USB_CDCETHER
1143 #define HAVE_HARDWARE
1145 /*-------------------------------------------------------------------------
1147 * Communications Device Class, Ethernet Control model
1149 * Takes two interfaces. The DATA interface is inactive till an altsetting
1150 * is selected. Configuration data includes class descriptors.
1152 * This should interop with whatever the 2.4 "CDCEther.c" driver
1153 * (by Brad Hards) talked with.
1155 *-------------------------------------------------------------------------*/
1157 #include <linux/ctype.h>
1159 static u8
nibble (unsigned char c
)
1161 if (likely (isdigit (c
)))
1164 if (likely (isxdigit (c
)))
1165 return 10 + c
- 'A';
1170 get_ethernet_addr (struct usbnet
*dev
, struct ether_desc
*e
)
1173 unsigned char buf
[13];
1175 tmp
= usb_string (dev
->udev
, e
->iMACAddress
, buf
, sizeof buf
);
1177 dev_dbg (&dev
->udev
->dev
,
1178 "bad MAC string %d fetch, %d\n", e
->iMACAddress
, tmp
);
1183 for (i
= tmp
= 0; i
< 6; i
++, tmp
+= 2)
1184 dev
->net
->dev_addr
[i
] =
1185 (nibble (buf
[tmp
]) << 4) + nibble (buf
[tmp
+ 1]);
1189 static int cdc_bind (struct usbnet
*dev
, struct usb_interface
*intf
)
1192 struct cdc_state
*info
= (void *) &dev
->data
;
1194 status
= generic_cdc_bind (dev
, intf
);
1198 status
= get_ethernet_addr (dev
, info
->ether
);
1200 usb_set_intfdata(info
->data
, NULL
);
1201 usb_driver_release_interface (&usbnet_driver
, info
->data
);
1205 /* FIXME cdc-ether has some multicast code too, though it complains
1206 * in routine cases. info->ether describes the multicast support.
1211 static const struct driver_info cdc_info
= {
1212 .description
= "CDC Ethernet Device",
1213 .flags
= FLAG_ETHER
,
1214 // .check_connect = cdc_check_connect,
1216 .unbind
= cdc_unbind
,
1219 #endif /* CONFIG_USB_CDCETHER */
1223 #ifdef CONFIG_USB_EPSON2888
1224 #define HAVE_HARDWARE
1226 /*-------------------------------------------------------------------------
1230 * This is the same idea as Linux PDAs (below) except the firmware in the
1231 * device might not be Tux-powered. Epson provides reference firmware that
1232 * implements this interface. Product developers can reuse or modify that
1233 * code, such as by using their own product and vendor codes.
1235 * Support was from Juro Bystricky <bystricky.juro@erd.epson.com>
1237 *-------------------------------------------------------------------------*/
1239 static const struct driver_info epson2888_info
= {
1240 .description
= "Epson USB Device",
1241 .check_connect
= always_connected
,
1246 #endif /* CONFIG_USB_EPSON2888 */
1249 #ifdef CONFIG_USB_GENESYS
1250 #define HAVE_HARDWARE
1252 /*-------------------------------------------------------------------------
1254 * GeneSys GL620USB-A (www.genesyslogic.com.tw)
1256 * ... should partially interop with the Win32 driver for this hardware
1257 * The GeneSys docs imply there's some NDIS issue motivating this framing.
1259 * Some info from GeneSys:
1260 * - GL620USB-A is full duplex; GL620USB is only half duplex for bulk.
1261 * (Some cables, like the BAFO-100c, use the half duplex version.)
1262 * - For the full duplex model, the low bit of the version code says
1263 * which side is which ("left/right").
1264 * - For the half duplex type, a control/interrupt handshake settles
1265 * the transfer direction. (That's disabled here, partially coded.)
1266 * A control URB would block until other side writes an interrupt.
1268 * Original code from Jiun-Jie Huang <huangjj@genesyslogic.com.tw>
1269 * and merged into "usbnet" by Stanislav Brabec <utx@penguin.cz>.
1271 *-------------------------------------------------------------------------*/
1273 // control msg write command
1274 #define GENELINK_CONNECT_WRITE 0xF0
1275 // interrupt pipe index
1276 #define GENELINK_INTERRUPT_PIPE 0x03
1277 // interrupt read buffer size
1278 #define INTERRUPT_BUFSIZE 0x08
1279 // interrupt pipe interval value
1280 #define GENELINK_INTERRUPT_INTERVAL 0x10
1281 // max transmit packet number per transmit
1282 #define GL_MAX_TRANSMIT_PACKETS 32
1283 // max packet length
1284 #define GL_MAX_PACKET_LEN 1514
1285 // max receive buffer size
1286 #define GL_RCV_BUF_SIZE \
1287 (((GL_MAX_PACKET_LEN + 4) * GL_MAX_TRANSMIT_PACKETS) + 4)
1291 char packet_data
[1];
1296 struct gl_packet packets
;
1301 // FIXME: this code is incomplete, not debugged; it doesn't
1302 // handle interrupts correctly. interrupts should be generic
1303 // code like all other device I/O, anyway.
1306 struct urb
*irq_urb
;
1307 char irq_buf
[INTERRUPT_BUFSIZE
];
1310 static inline int gl_control_write (struct usbnet
*dev
, u8 request
, u16 value
)
1314 retval
= usb_control_msg (dev
->udev
,
1315 usb_sndctrlpipe (dev
->udev
, 0),
1317 USB_DIR_OUT
| USB_TYPE_CLASS
| USB_RECIP_INTERFACE
,
1322 CONTROL_TIMEOUT_JIFFIES
);
1326 static void gl_interrupt_complete (struct urb
*urb
, struct pt_regs
*regs
)
1328 int status
= urb
->status
;
1337 /* this urb is terminated, clean up */
1338 dbg("%s - urb shutting down with status: %d",
1339 __FUNCTION__
, status
);
1342 dbg("%s - nonzero urb status received: %d",
1343 __FUNCTION__
, urb
->status
);
1346 status
= usb_submit_urb (urb
, GFP_ATOMIC
);
1348 err ("%s - usb_submit_urb failed with result %d",
1349 __FUNCTION__
, status
);
1352 static int gl_interrupt_read (struct usbnet
*dev
)
1354 struct gl_priv
*priv
= dev
->priv_data
;
1357 // issue usb interrupt read
1358 if (priv
&& priv
->irq_urb
) {
1360 if ((retval
= usb_submit_urb (priv
->irq_urb
, GFP_KERNEL
)) != 0)
1361 dbg ("gl_interrupt_read: submit fail - %X...", retval
);
1363 dbg ("gl_interrupt_read: submit success...");
1369 // check whether another side is connected
1370 static int genelink_check_connect (struct usbnet
*dev
)
1374 dbg ("genelink_check_connect...");
1376 // detect whether another side is connected
1377 if ((retval
= gl_control_write (dev
, GENELINK_CONNECT_WRITE
, 0)) != 0) {
1378 dbg ("%s: genelink_check_connect write fail - %X",
1379 dev
->net
->name
, retval
);
1383 // usb interrupt read to ack another side
1384 if ((retval
= gl_interrupt_read (dev
)) != 0) {
1385 dbg ("%s: genelink_check_connect read fail - %X",
1386 dev
->net
->name
, retval
);
1390 dbg ("%s: genelink_check_connect read success", dev
->net
->name
);
1394 // allocate and initialize the private data for genelink
1395 static int genelink_init (struct usbnet
*dev
)
1397 struct gl_priv
*priv
;
1399 // allocate the private data structure
1400 if ((priv
= kmalloc (sizeof *priv
, GFP_KERNEL
)) == 0) {
1401 dbg ("%s: cannot allocate private data per device",
1407 if ((priv
->irq_urb
= usb_alloc_urb (0, GFP_KERNEL
)) == 0) {
1408 dbg ("%s: cannot allocate private irq urb per device",
1415 usb_fill_int_urb (priv
->irq_urb
, dev
->udev
,
1416 usb_rcvintpipe (dev
->udev
, GENELINK_INTERRUPT_PIPE
),
1417 priv
->irq_buf
, INTERRUPT_BUFSIZE
,
1418 gl_interrupt_complete
, 0,
1419 GENELINK_INTERRUPT_INTERVAL
);
1421 // set private data pointer
1422 dev
->priv_data
= priv
;
1427 // release the private data
1428 static int genelink_free (struct usbnet
*dev
)
1430 struct gl_priv
*priv
= dev
->priv_data
;
1435 // FIXME: can't cancel here; it's synchronous, and
1436 // should have happened earlier in any case (interrupt
1437 // handling needs to be generic)
1439 // cancel irq urb first
1440 usb_unlink_urb (priv
->irq_urb
);
1443 usb_free_urb (priv
->irq_urb
);
1445 // free the private data structure
1453 static int genelink_rx_fixup (struct usbnet
*dev
, struct sk_buff
*skb
)
1455 struct gl_header
*header
;
1456 struct gl_packet
*packet
;
1457 struct sk_buff
*gl_skb
;
1460 header
= (struct gl_header
*) skb
->data
;
1462 // get the packet count of the received skb
1463 le32_to_cpus (&header
->packet_count
);
1464 if ((header
->packet_count
> GL_MAX_TRANSMIT_PACKETS
)
1465 || (header
->packet_count
< 0)) {
1466 dbg ("genelink: invalid received packet count %d",
1467 header
->packet_count
);
1471 // set the current packet pointer to the first packet
1472 packet
= &header
->packets
;
1474 // decrement the length for the packet count size 4 bytes
1477 while (header
->packet_count
> 1) {
1478 // get the packet length
1479 size
= packet
->packet_length
;
1481 // this may be a broken packet
1482 if (size
> GL_MAX_PACKET_LEN
) {
1483 dbg ("genelink: invalid rx length %d", size
);
1487 // allocate the skb for the individual packet
1488 gl_skb
= alloc_skb (size
, GFP_ATOMIC
);
1491 // copy the packet data to the new skb
1492 memcpy(skb_put(gl_skb
, size
), packet
->packet_data
, size
);
1493 skb_return (dev
, skb
);
1496 // advance to the next packet
1497 packet
= (struct gl_packet
*)
1498 &packet
->packet_data
[size
];
1499 header
->packet_count
--;
1501 // shift the data pointer to the next gl_packet
1502 skb_pull (skb
, size
+ 4);
1505 // skip the packet length field 4 bytes
1508 if (skb
->len
> GL_MAX_PACKET_LEN
) {
1509 dbg ("genelink: invalid rx length %d", skb
->len
);
1515 static struct sk_buff
*
1516 genelink_tx_fixup (struct usbnet
*dev
, struct sk_buff
*skb
, int flags
)
1519 int length
= skb
->len
;
1520 int headroom
= skb_headroom (skb
);
1521 int tailroom
= skb_tailroom (skb
);
1525 // FIXME: magic numbers, bleech
1526 padlen
= ((skb
->len
+ (4 + 4*1)) % 64) ? 0 : 1;
1528 if ((!skb_cloned (skb
))
1529 && ((headroom
+ tailroom
) >= (padlen
+ (4 + 4*1)))) {
1530 if ((headroom
< (4 + 4*1)) || (tailroom
< padlen
)) {
1531 skb
->data
= memmove (skb
->head
+ (4 + 4*1),
1532 skb
->data
, skb
->len
);
1533 skb
->tail
= skb
->data
+ skb
->len
;
1536 struct sk_buff
*skb2
;
1537 skb2
= skb_copy_expand (skb
, (4 + 4*1) , padlen
, flags
);
1538 dev_kfree_skb_any (skb
);
1544 // attach the packet count to the header
1545 packet_count
= (u32
*) skb_push (skb
, (4 + 4*1));
1546 packet_len
= packet_count
+ 1;
1548 // FIXME little endian?
1550 *packet_len
= length
;
1553 if ((skb
->len
% dev
->maxpacket
) == 0)
1559 static const struct driver_info genelink_info
= {
1560 .description
= "Genesys GeneLink",
1561 .flags
= FLAG_FRAMING_GL
| FLAG_NO_SETINT
,
1562 .rx_fixup
= genelink_rx_fixup
,
1563 .tx_fixup
= genelink_tx_fixup
,
1568 .check_connect
=genelink_check_connect
,
1572 #endif /* CONFIG_USB_GENESYS */
1576 #ifdef CONFIG_USB_NET1080
1577 #define HAVE_HARDWARE
1579 /*-------------------------------------------------------------------------
1581 * Netchip 1080 driver ... http://www.netchip.com
1582 * Used in LapLink cables
1584 *-------------------------------------------------------------------------*/
1586 #define dev_packet_id data[0]
1587 #define frame_errors data[1]
1590 * NetChip framing of ethernet packets, supporting additional error
1591 * checks for links that may drop bulk packets from inside messages.
1592 * Odd USB length == always short read for last usb packet.
1594 * - Ethernet header (14 bytes)
1596 * - (optional padding byte, if needed so length becomes odd)
1599 * This framing is to be avoided for non-NetChip devices.
1602 struct nc_header
{ // packed:
1603 u16 hdr_len
; // sizeof nc_header (LE, all)
1604 u16 packet_len
; // payload size (including ethhdr)
1605 u16 packet_id
; // detects dropped packets
1606 #define MIN_HEADER 6
1608 // all else is optional, and must start with:
1609 // u16 vendorId; // from usb-if
1611 } __attribute__((__packed__
));
1613 #define PAD_BYTE ((unsigned char)0xAC)
1617 } __attribute__((__packed__
));
1619 // packets may use FLAG_FRAMING_NC and optional pad
1620 #define FRAMED_SIZE(mtu) (sizeof (struct nc_header) \
1621 + sizeof (struct ethhdr) \
1624 + sizeof (struct nc_trailer))
1626 #define MIN_FRAMED FRAMED_SIZE(0)
1630 * Zero means no timeout; else, how long a 64 byte bulk packet may be queued
1631 * before the hardware drops it. If that's done, the driver will need to
1632 * frame network packets to guard against the dropped USB packets. The win32
1633 * driver sets this for both sides of the link.
1635 #define NC_READ_TTL_MS ((u8)255) // ms
1638 * We ignore most registers and EEPROM contents.
1640 #define REG_USBCTL ((u8)0x04)
1641 #define REG_TTL ((u8)0x10)
1642 #define REG_STATUS ((u8)0x11)
1645 * Vendor specific requests to read/write data
1647 #define REQUEST_REGISTER ((u8)0x10)
1648 #define REQUEST_EEPROM ((u8)0x11)
1651 nc_vendor_read (struct usbnet
*dev
, u8 req
, u8 regnum
, u16
*retval_ptr
)
1653 int status
= usb_control_msg (dev
->udev
,
1654 usb_rcvctrlpipe (dev
->udev
, 0),
1656 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
1658 retval_ptr
, sizeof *retval_ptr
,
1659 CONTROL_TIMEOUT_JIFFIES
);
1663 le16_to_cpus (retval_ptr
);
1668 nc_register_read (struct usbnet
*dev
, u8 regnum
, u16
*retval_ptr
)
1670 return nc_vendor_read (dev
, REQUEST_REGISTER
, regnum
, retval_ptr
);
1673 // no retval ... can become async, usable in_interrupt()
1675 nc_vendor_write (struct usbnet
*dev
, u8 req
, u8 regnum
, u16 value
)
1677 usb_control_msg (dev
->udev
,
1678 usb_sndctrlpipe (dev
->udev
, 0),
1680 USB_DIR_OUT
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
1682 NULL
, 0, // data is in setup packet
1683 CONTROL_TIMEOUT_JIFFIES
);
1687 nc_register_write (struct usbnet
*dev
, u8 regnum
, u16 value
)
1689 nc_vendor_write (dev
, REQUEST_REGISTER
, regnum
, value
);
1694 static void nc_dump_registers (struct usbnet
*dev
)
1697 u16
*vp
= kmalloc (sizeof (u16
));
1704 dbg ("%s registers:", dev
->net
->name
);
1705 for (reg
= 0; reg
< 0x20; reg
++) {
1708 // reading some registers is trouble
1709 if (reg
>= 0x08 && reg
<= 0xf)
1711 if (reg
>= 0x12 && reg
<= 0x1e)
1714 retval
= nc_register_read (dev
, reg
, vp
);
1716 dbg ("%s reg [0x%x] ==> error %d",
1717 dev
->net
->name
, reg
, retval
);
1719 dbg ("%s reg [0x%x] = 0x%x",
1720 dev
->net
->name
, reg
, *vp
);
1727 /*-------------------------------------------------------------------------*/
1733 #define USBCTL_WRITABLE_MASK 0x1f0f
1734 // bits 15-13 reserved, r/o
1735 #define USBCTL_ENABLE_LANG (1 << 12)
1736 #define USBCTL_ENABLE_MFGR (1 << 11)
1737 #define USBCTL_ENABLE_PROD (1 << 10)
1738 #define USBCTL_ENABLE_SERIAL (1 << 9)
1739 #define USBCTL_ENABLE_DEFAULTS (1 << 8)
1740 // bits 7-4 reserved, r/o
1741 #define USBCTL_FLUSH_OTHER (1 << 3)
1742 #define USBCTL_FLUSH_THIS (1 << 2)
1743 #define USBCTL_DISCONN_OTHER (1 << 1)
1744 #define USBCTL_DISCONN_THIS (1 << 0)
1746 static inline void nc_dump_usbctl (struct usbnet
*dev
, u16 usbctl
)
1749 devdbg (dev
, "net1080 %s-%s usbctl 0x%x:%s%s%s%s%s;"
1751 " other%s%s; r/o 0x%x",
1752 dev
->udev
->bus
->bus_name
, dev
->udev
->devpath
,
1754 (usbctl
& USBCTL_ENABLE_LANG
) ? " lang" : "",
1755 (usbctl
& USBCTL_ENABLE_MFGR
) ? " mfgr" : "",
1756 (usbctl
& USBCTL_ENABLE_PROD
) ? " prod" : "",
1757 (usbctl
& USBCTL_ENABLE_SERIAL
) ? " serial" : "",
1758 (usbctl
& USBCTL_ENABLE_DEFAULTS
) ? " defaults" : "",
1760 (usbctl
& USBCTL_FLUSH_OTHER
) ? " FLUSH" : "",
1761 (usbctl
& USBCTL_DISCONN_OTHER
) ? " DIS" : "",
1762 (usbctl
& USBCTL_FLUSH_THIS
) ? " FLUSH" : "",
1763 (usbctl
& USBCTL_DISCONN_THIS
) ? " DIS" : "",
1764 usbctl
& ~USBCTL_WRITABLE_MASK
1769 /*-------------------------------------------------------------------------*/
1775 #define STATUS_PORT_A (1 << 15)
1777 #define STATUS_CONN_OTHER (1 << 14)
1778 #define STATUS_SUSPEND_OTHER (1 << 13)
1779 #define STATUS_MAILBOX_OTHER (1 << 12)
1780 #define STATUS_PACKETS_OTHER(n) (((n) >> 8) && 0x03)
1782 #define STATUS_CONN_THIS (1 << 6)
1783 #define STATUS_SUSPEND_THIS (1 << 5)
1784 #define STATUS_MAILBOX_THIS (1 << 4)
1785 #define STATUS_PACKETS_THIS(n) (((n) >> 0) && 0x03)
1787 #define STATUS_UNSPEC_MASK 0x0c8c
1788 #define STATUS_NOISE_MASK ((u16)~(0x0303|STATUS_UNSPEC_MASK))
1791 static inline void nc_dump_status (struct usbnet
*dev
, u16 status
)
1794 devdbg (dev
, "net1080 %s-%s status 0x%x:"
1795 " this (%c) PKT=%d%s%s%s;"
1796 " other PKT=%d%s%s%s; unspec 0x%x",
1797 dev
->udev
->bus
->bus_name
, dev
->udev
->devpath
,
1800 // XXX the packet counts don't seem right
1801 // (1 at reset, not 0); maybe UNSPEC too
1803 (status
& STATUS_PORT_A
) ? 'A' : 'B',
1804 STATUS_PACKETS_THIS (status
),
1805 (status
& STATUS_CONN_THIS
) ? " CON" : "",
1806 (status
& STATUS_SUSPEND_THIS
) ? " SUS" : "",
1807 (status
& STATUS_MAILBOX_THIS
) ? " MBOX" : "",
1809 STATUS_PACKETS_OTHER (status
),
1810 (status
& STATUS_CONN_OTHER
) ? " CON" : "",
1811 (status
& STATUS_SUSPEND_OTHER
) ? " SUS" : "",
1812 (status
& STATUS_MAILBOX_OTHER
) ? " MBOX" : "",
1814 status
& STATUS_UNSPEC_MASK
1819 /*-------------------------------------------------------------------------*/
1825 #define TTL_THIS(ttl) (0x00ff & ttl)
1826 #define TTL_OTHER(ttl) (0x00ff & (ttl >> 8))
1827 #define MK_TTL(this,other) ((u16)(((other)<<8)|(0x00ff&(this))))
1829 static inline void nc_dump_ttl (struct usbnet
*dev
, u16 ttl
)
1832 devdbg (dev
, "net1080 %s-%s ttl 0x%x this = %d, other = %d",
1833 dev
->udev
->bus
->bus_name
, dev
->udev
->devpath
,
1842 /*-------------------------------------------------------------------------*/
1844 static int net1080_reset (struct usbnet
*dev
)
1846 u16 usbctl
, status
, ttl
;
1847 u16
*vp
= kmalloc (sizeof (u16
), GFP_KERNEL
);
1853 // nc_dump_registers (dev);
1855 if ((retval
= nc_register_read (dev
, REG_STATUS
, vp
)) < 0) {
1856 dbg ("can't read %s-%s status: %d",
1857 dev
->udev
->bus
->bus_name
, dev
->udev
->devpath
, retval
);
1861 // nc_dump_status (dev, status);
1863 if ((retval
= nc_register_read (dev
, REG_USBCTL
, vp
)) < 0) {
1864 dbg ("can't read USBCTL, %d", retval
);
1868 // nc_dump_usbctl (dev, usbctl);
1870 nc_register_write (dev
, REG_USBCTL
,
1871 USBCTL_FLUSH_THIS
| USBCTL_FLUSH_OTHER
);
1873 if ((retval
= nc_register_read (dev
, REG_TTL
, vp
)) < 0) {
1874 dbg ("can't read TTL, %d", retval
);
1878 // nc_dump_ttl (dev, ttl);
1880 nc_register_write (dev
, REG_TTL
,
1881 MK_TTL (NC_READ_TTL_MS
, TTL_OTHER (ttl
)) );
1882 dbg ("%s: assigned TTL, %d ms", dev
->net
->name
, NC_READ_TTL_MS
);
1884 if (dev
->msg_level
>= 2)
1885 devinfo (dev
, "port %c, peer %sconnected",
1886 (status
& STATUS_PORT_A
) ? 'A' : 'B',
1887 (status
& STATUS_CONN_OTHER
) ? "" : "dis"
1896 static int net1080_check_connect (struct usbnet
*dev
)
1900 u16
*vp
= kmalloc (sizeof (u16
), GFP_KERNEL
);
1904 retval
= nc_register_read (dev
, REG_STATUS
, vp
);
1908 dbg ("%s net1080_check_conn read - %d", dev
->net
->name
, retval
);
1911 if ((status
& STATUS_CONN_OTHER
) != STATUS_CONN_OTHER
)
1916 static void nc_flush_complete (struct urb
*urb
, struct pt_regs
*regs
)
1918 kfree (urb
->context
);
1922 static void nc_ensure_sync (struct usbnet
*dev
)
1924 dev
->frame_errors
++;
1925 if (dev
->frame_errors
> 5) {
1927 struct usb_ctrlrequest
*req
;
1931 urb
= usb_alloc_urb (0, SLAB_ATOMIC
);
1935 req
= kmalloc (sizeof *req
, GFP_ATOMIC
);
1941 req
->bRequestType
= USB_DIR_OUT
1944 req
->bRequest
= REQUEST_REGISTER
;
1945 req
->wValue
= cpu_to_le16 (USBCTL_FLUSH_THIS
1946 | USBCTL_FLUSH_OTHER
);
1947 req
->wIndex
= cpu_to_le16 (REG_USBCTL
);
1948 req
->wLength
= cpu_to_le16 (0);
1950 /* queue an async control request, we don't need
1951 * to do anything when it finishes except clean up.
1953 usb_fill_control_urb (urb
, dev
->udev
,
1954 usb_sndctrlpipe (dev
->udev
, 0),
1955 (unsigned char *) req
,
1957 nc_flush_complete
, req
);
1958 status
= usb_submit_urb (urb
, GFP_ATOMIC
);
1965 devdbg (dev
, "flush net1080; too many framing errors");
1966 dev
->frame_errors
= 0;
1970 static int net1080_rx_fixup (struct usbnet
*dev
, struct sk_buff
*skb
)
1972 struct nc_header
*header
;
1973 struct nc_trailer
*trailer
;
1975 if (!(skb
->len
& 0x01)
1976 || MIN_FRAMED
> skb
->len
1977 || skb
->len
> FRAMED_SIZE (dev
->net
->mtu
)) {
1978 dev
->stats
.rx_frame_errors
++;
1979 dbg ("rx framesize %d range %d..%d mtu %d", skb
->len
,
1980 (int)MIN_FRAMED
, (int)FRAMED_SIZE (dev
->net
->mtu
),
1982 nc_ensure_sync (dev
);
1986 header
= (struct nc_header
*) skb
->data
;
1987 le16_to_cpus (&header
->hdr_len
);
1988 le16_to_cpus (&header
->packet_len
);
1989 if (FRAMED_SIZE (header
->packet_len
) > MAX_PACKET
) {
1990 dev
->stats
.rx_frame_errors
++;
1991 dbg ("packet too big, %d", header
->packet_len
);
1992 nc_ensure_sync (dev
);
1994 } else if (header
->hdr_len
< MIN_HEADER
) {
1995 dev
->stats
.rx_frame_errors
++;
1996 dbg ("header too short, %d", header
->hdr_len
);
1997 nc_ensure_sync (dev
);
1999 } else if (header
->hdr_len
> MIN_HEADER
) {
2000 // out of band data for us?
2001 dbg ("header OOB, %d bytes",
2002 header
->hdr_len
- MIN_HEADER
);
2003 nc_ensure_sync (dev
);
2004 // switch (vendor/product ids) { ... }
2006 skb_pull (skb
, header
->hdr_len
);
2008 trailer
= (struct nc_trailer
*)
2009 (skb
->data
+ skb
->len
- sizeof *trailer
);
2010 skb_trim (skb
, skb
->len
- sizeof *trailer
);
2012 if ((header
->packet_len
& 0x01) == 0) {
2013 if (skb
->data
[header
->packet_len
] != PAD_BYTE
) {
2014 dev
->stats
.rx_frame_errors
++;
2018 skb_trim (skb
, skb
->len
- 1);
2020 if (skb
->len
!= header
->packet_len
) {
2021 dev
->stats
.rx_frame_errors
++;
2022 dbg ("bad packet len %d (expected %d)",
2023 skb
->len
, header
->packet_len
);
2024 nc_ensure_sync (dev
);
2027 if (header
->packet_id
!= get_unaligned (&trailer
->packet_id
)) {
2028 dev
->stats
.rx_fifo_errors
++;
2029 dbg ("(2+ dropped) rx packet_id mismatch 0x%x 0x%x",
2030 header
->packet_id
, trailer
->packet_id
);
2034 devdbg (dev
, "frame <rx h %d p %d id %d", header
->hdr_len
,
2035 header
->packet_len
, header
->packet_id
);
2037 dev
->frame_errors
= 0;
2041 static struct sk_buff
*
2042 net1080_tx_fixup (struct usbnet
*dev
, struct sk_buff
*skb
, int flags
)
2045 struct sk_buff
*skb2
;
2047 padlen
= ((skb
->len
+ sizeof (struct nc_header
)
2048 + sizeof (struct nc_trailer
)) & 0x01) ? 0 : 1;
2049 if (!skb_cloned (skb
)) {
2050 int headroom
= skb_headroom (skb
);
2051 int tailroom
= skb_tailroom (skb
);
2053 if ((padlen
+ sizeof (struct nc_trailer
)) <= tailroom
2054 && sizeof (struct nc_header
) <= headroom
)
2055 /* There's enough head and tail room */
2058 if ((sizeof (struct nc_header
) + padlen
2059 + sizeof (struct nc_trailer
)) <
2060 (headroom
+ tailroom
)) {
2061 /* There's enough total room, so just readjust */
2062 skb
->data
= memmove (skb
->head
2063 + sizeof (struct nc_header
),
2064 skb
->data
, skb
->len
);
2065 skb
->tail
= skb
->data
+ skb
->len
;
2070 /* Create a new skb to use with the correct size */
2071 skb2
= skb_copy_expand (skb
,
2072 sizeof (struct nc_header
),
2073 sizeof (struct nc_trailer
) + padlen
,
2075 dev_kfree_skb_any (skb
);
2079 static const struct driver_info net1080_info
= {
2080 .description
= "NetChip TurboCONNECT",
2081 .flags
= FLAG_FRAMING_NC
,
2082 .reset
= net1080_reset
,
2083 .check_connect
=net1080_check_connect
,
2084 .rx_fixup
= net1080_rx_fixup
,
2085 .tx_fixup
= net1080_tx_fixup
,
2088 #endif /* CONFIG_USB_NET1080 */
2092 #ifdef CONFIG_USB_PL2301
2093 #define HAVE_HARDWARE
2095 /*-------------------------------------------------------------------------
2097 * Prolific PL-2301/PL-2302 driver ... http://www.prolifictech.com
2099 * The protocol and handshaking used here should be bug-compatible
2100 * with the Linux 2.2 "plusb" driver, by Deti Fliegl.
2102 *-------------------------------------------------------------------------*/
2105 * Bits 0-4 can be used for software handshaking; they're set from
2106 * one end, cleared from the other, "read" with the interrupt byte.
2108 #define PL_S_EN (1<<7) /* (feature only) suspend enable */
2109 /* reserved bit -- rx ready (6) ? */
2110 #define PL_TX_READY (1<<5) /* (interrupt only) transmit ready */
2111 #define PL_RESET_OUT (1<<4) /* reset output pipe */
2112 #define PL_RESET_IN (1<<3) /* reset input pipe */
2113 #define PL_TX_C (1<<2) /* transmission complete */
2114 #define PL_TX_REQ (1<<1) /* transmission received */
2115 #define PL_PEER_E (1<<0) /* peer exists */
2118 pl_vendor_req (struct usbnet
*dev
, u8 req
, u8 val
, u8 index
)
2120 return usb_control_msg (dev
->udev
,
2121 usb_rcvctrlpipe (dev
->udev
, 0),
2123 USB_DIR_IN
| USB_TYPE_VENDOR
| USB_RECIP_DEVICE
,
2126 CONTROL_TIMEOUT_JIFFIES
);
2130 pl_clear_QuickLink_features (struct usbnet
*dev
, int val
)
2132 return pl_vendor_req (dev
, 1, (u8
) val
, 0);
2136 pl_set_QuickLink_features (struct usbnet
*dev
, int val
)
2138 return pl_vendor_req (dev
, 3, (u8
) val
, 0);
2141 /*-------------------------------------------------------------------------*/
2143 static int pl_reset (struct usbnet
*dev
)
2145 /* some units seem to need this reset, others reject it utterly.
2146 * FIXME be more like "naplink" or windows drivers.
2148 (void) pl_set_QuickLink_features (dev
,
2149 PL_S_EN
|PL_RESET_OUT
|PL_RESET_IN
|PL_PEER_E
);
2153 static const struct driver_info prolific_info
= {
2154 .description
= "Prolific PL-2301/PL-2302",
2155 .flags
= FLAG_NO_SETINT
,
2156 /* some PL-2302 versions seem to fail usb_set_interface() */
2160 #endif /* CONFIG_USB_PL2301 */
2164 #ifdef CONFIG_USB_ARMLINUX
2165 #define HAVE_HARDWARE
2167 /*-------------------------------------------------------------------------
2169 * Intel's SA-1100 chip integrates basic USB support, and is used
2170 * in PDAs like some iPaqs, the Yopy, some Zaurus models, and more.
2171 * When they run Linux, arch/arm/mach-sa1100/usb-eth.c may be used to
2172 * network using minimal USB framing data.
2174 * This describes the driver currently in standard ARM Linux kernels.
2175 * The Zaurus uses a different driver (see later).
2177 * PXA25x and PXA210 use XScale cores (ARM v5TE) with better USB support
2178 * and different USB endpoint numbering than the SA1100 devices. The
2179 * mach-pxa/usb-eth.c driver re-uses the device ids from mach-sa1100
2180 * so we rely on the endpoint descriptors.
2182 *-------------------------------------------------------------------------*/
2184 static const struct driver_info linuxdev_info
= {
2185 .description
= "Linux Device",
2186 .check_connect
= always_connected
,
2189 static const struct driver_info yopy_info
= {
2190 .description
= "Yopy",
2191 .check_connect
= always_connected
,
2194 static const struct driver_info blob_info
= {
2195 .description
= "Boot Loader OBject",
2196 .check_connect
= always_connected
,
2199 #endif /* CONFIG_USB_ARMLINUX */
2202 #ifdef CONFIG_USB_ZAURUS
2203 #define HAVE_HARDWARE
2205 #include <linux/crc32.h>
2207 /*-------------------------------------------------------------------------
2209 * Zaurus is also a SA-1110 based PDA, but one using a different driver
2210 * (and framing) for its USB slave/gadget controller than the case above.
2212 * For the current version of that driver, the main way that framing is
2213 * nonstandard (also from perspective of the CDC ethernet model!) is a
2214 * crc32, added to help detect when some sa1100 usb-to-memory DMA errata
2215 * haven't been fully worked around.
2217 * PXA based models use the same framing, and also can't implement
2218 * set_interface properly.
2220 *-------------------------------------------------------------------------*/
2222 static struct sk_buff
*
2223 zaurus_tx_fixup (struct usbnet
*dev
, struct sk_buff
*skb
, int flags
)
2226 struct sk_buff
*skb2
;
2229 if (!skb_cloned (skb
)) {
2230 int tailroom
= skb_tailroom (skb
);
2231 if ((padlen
+ 4) <= tailroom
)
2234 skb2
= skb_copy_expand (skb
, 0, 4 + padlen
, flags
);
2235 dev_kfree_skb_any (skb
);
2240 fcs
= crc32_le (~0, skb
->data
, skb
->len
);
2243 *skb_put (skb
, 1) = fcs
& 0xff;
2244 *skb_put (skb
, 1) = (fcs
>> 8) & 0xff;
2245 *skb_put (skb
, 1) = (fcs
>>16) & 0xff;
2246 *skb_put (skb
, 1) = (fcs
>>24) & 0xff;
2251 static const struct driver_info zaurus_sl5x00_info
= {
2252 .description
= "Sharp Zaurus SL-5x00",
2253 .flags
= FLAG_FRAMING_Z
,
2254 .check_connect
= always_connected
,
2255 .bind
= generic_cdc_bind
,
2256 .unbind
= cdc_unbind
,
2257 .tx_fixup
= zaurus_tx_fixup
,
2259 static const struct driver_info zaurus_pxa_info
= {
2260 .description
= "Sharp Zaurus, PXA-2xx based",
2261 .flags
= FLAG_FRAMING_Z
,
2262 .check_connect
= always_connected
,
2263 .tx_fixup
= zaurus_tx_fixup
,
2271 /*-------------------------------------------------------------------------
2273 * Network Device Driver (peer link to "Host Device", from USB host)
2275 *-------------------------------------------------------------------------*/
2277 static int usbnet_change_mtu (struct net_device
*net
, int new_mtu
)
2279 struct usbnet
*dev
= (struct usbnet
*) net
->priv
;
2281 if (new_mtu
<= MIN_PACKET
|| new_mtu
> MAX_PACKET
)
2283 #ifdef CONFIG_USB_NET1080
2284 if (((dev
->driver_info
->flags
) & FLAG_FRAMING_NC
)) {
2285 if (FRAMED_SIZE (new_mtu
) > MAX_PACKET
)
2289 #ifdef CONFIG_USB_GENESYS
2290 if (((dev
->driver_info
->flags
) & FLAG_FRAMING_GL
)
2291 && new_mtu
> GL_MAX_PACKET_LEN
)
2294 // no second zero-length packet read wanted after mtu-sized packets
2295 if (((new_mtu
+ sizeof (struct ethhdr
)) % dev
->maxpacket
) == 0)
2301 /*-------------------------------------------------------------------------*/
2303 static struct net_device_stats
*usbnet_get_stats (struct net_device
*net
)
2305 return &((struct usbnet
*) net
->priv
)->stats
;
2308 /*-------------------------------------------------------------------------*/
2310 /* some LK 2.4 HCDs oopsed if we freed or resubmitted urbs from
2311 * completion callbacks. 2.5 should have fixed those bugs...
2314 static void defer_bh (struct usbnet
*dev
, struct sk_buff
*skb
)
2316 struct sk_buff_head
*list
= skb
->list
;
2317 unsigned long flags
;
2319 spin_lock_irqsave (&list
->lock
, flags
);
2320 __skb_unlink (skb
, list
);
2321 spin_unlock (&list
->lock
);
2322 spin_lock (&dev
->done
.lock
);
2323 __skb_queue_tail (&dev
->done
, skb
);
2324 if (dev
->done
.qlen
== 1)
2325 tasklet_schedule (&dev
->bh
);
2326 spin_unlock_irqrestore (&dev
->done
.lock
, flags
);
2329 /* some work can't be done in tasklets, so we use keventd
2331 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
2332 * but tasklet_schedule() doesn't. hope the failure is rare.
2334 static void defer_kevent (struct usbnet
*dev
, int work
)
2336 set_bit (work
, &dev
->flags
);
2337 if (!schedule_work (&dev
->kevent
))
2338 deverr (dev
, "kevent %d may have been dropped", work
);
2340 devdbg (dev
, "kevent %d scheduled", work
);
2343 /*-------------------------------------------------------------------------*/
2345 static void rx_complete (struct urb
*urb
, struct pt_regs
*regs
);
2347 static void rx_submit (struct usbnet
*dev
, struct urb
*urb
, int flags
)
2349 struct sk_buff
*skb
;
2350 struct skb_data
*entry
;
2352 unsigned long lockflags
;
2355 #ifdef CONFIG_USB_NET1080
2356 if (dev
->driver_info
->flags
& FLAG_FRAMING_NC
)
2357 size
= FRAMED_SIZE (dev
->net
->mtu
);
2360 #ifdef CONFIG_USB_GENESYS
2361 if (dev
->driver_info
->flags
& FLAG_FRAMING_GL
)
2362 size
= GL_RCV_BUF_SIZE
;
2365 #ifdef CONFIG_USB_ZAURUS
2366 if (dev
->driver_info
->flags
& FLAG_FRAMING_Z
)
2367 size
= 6 + (sizeof (struct ethhdr
) + dev
->net
->mtu
);
2370 #ifdef CONFIG_USB_RNDIS
2371 if (dev
->driver_info
->flags
& FLAG_FRAMING_RN
)
2372 size
= RNDIS_MAX_TRANSFER
;
2375 size
= (sizeof (struct ethhdr
) + dev
->net
->mtu
);
2377 if ((skb
= alloc_skb (size
, flags
)) == 0) {
2378 devdbg (dev
, "no rx skb");
2379 defer_kevent (dev
, EVENT_RX_MEMORY
);
2384 entry
= (struct skb_data
*) skb
->cb
;
2387 entry
->state
= rx_start
;
2390 usb_fill_bulk_urb (urb
, dev
->udev
, dev
->in
,
2391 skb
->data
, size
, rx_complete
, skb
);
2392 urb
->transfer_flags
|= URB_ASYNC_UNLINK
;
2394 spin_lock_irqsave (&dev
->rxq
.lock
, lockflags
);
2396 if (netif_running (dev
->net
)
2397 && netif_device_present (dev
->net
)
2398 && !test_bit (EVENT_RX_HALT
, &dev
->flags
)) {
2399 switch (retval
= usb_submit_urb (urb
, GFP_ATOMIC
)){
2401 defer_kevent (dev
, EVENT_RX_HALT
);
2404 defer_kevent (dev
, EVENT_RX_MEMORY
);
2407 devdbg (dev
, "device gone");
2408 netif_device_detach (dev
->net
);
2411 devdbg (dev
, "rx submit, %d", retval
);
2412 tasklet_schedule (&dev
->bh
);
2415 __skb_queue_tail (&dev
->rxq
, skb
);
2418 devdbg (dev
, "rx: stopped");
2421 spin_unlock_irqrestore (&dev
->rxq
.lock
, lockflags
);
2423 dev_kfree_skb_any (skb
);
2429 /*-------------------------------------------------------------------------*/
2431 static inline void rx_process (struct usbnet
*dev
, struct sk_buff
*skb
)
2433 if (dev
->driver_info
->rx_fixup
2434 && !dev
->driver_info
->rx_fixup (dev
, skb
))
2436 // else network stack removes extra byte if we forced a short packet
2439 skb_return (dev
, skb
);
2441 devdbg (dev
, "drop");
2443 dev
->stats
.rx_errors
++;
2444 skb_queue_tail (&dev
->done
, skb
);
2448 /*-------------------------------------------------------------------------*/
2450 static void rx_complete (struct urb
*urb
, struct pt_regs
*regs
)
2452 struct sk_buff
*skb
= (struct sk_buff
*) urb
->context
;
2453 struct skb_data
*entry
= (struct skb_data
*) skb
->cb
;
2454 struct usbnet
*dev
= entry
->dev
;
2455 int urb_status
= urb
->status
;
2457 skb_put (skb
, urb
->actual_length
);
2458 entry
->state
= rx_done
;
2461 switch (urb_status
) {
2464 if (MIN_PACKET
> skb
->len
|| skb
->len
> MAX_PACKET
) {
2465 entry
->state
= rx_cleanup
;
2466 dev
->stats
.rx_errors
++;
2467 dev
->stats
.rx_length_errors
++;
2468 devdbg (dev
, "rx length %d", skb
->len
);
2472 // stalls need manual reset. this is rare ... except that
2473 // when going through USB 2.0 TTs, unplug appears this way.
2474 // we avoid the highspeed version of the ETIMEOUT/EILSEQ
2475 // storm, recovering as needed.
2477 dev
->stats
.rx_errors
++;
2478 defer_kevent (dev
, EVENT_RX_HALT
);
2481 // software-driven interface shutdown
2482 case -ECONNRESET
: // async unlink
2483 case -ESHUTDOWN
: // hardware gone
2485 devdbg (dev
, "rx shutdown, code %d", urb_status
);
2489 // we get controller i/o faults during khubd disconnect() delays.
2490 // throttle down resubmits, to avoid log floods; just temporarily,
2491 // so we still recover when the fault isn't a khubd delay.
2492 case -EPROTO
: // ehci
2493 case -ETIMEDOUT
: // ohci
2494 case -EILSEQ
: // uhci
2495 dev
->stats
.rx_errors
++;
2496 if (!timer_pending (&dev
->delay
)) {
2497 mod_timer (&dev
->delay
, jiffies
+ THROTTLE_JIFFIES
);
2498 devdbg (dev
, "rx throttle %d", urb_status
);
2501 entry
->state
= rx_cleanup
;
2506 // data overrun ... flush fifo?
2508 dev
->stats
.rx_over_errors
++;
2512 entry
->state
= rx_cleanup
;
2513 dev
->stats
.rx_errors
++;
2514 devdbg (dev
, "rx status %d", urb_status
);
2518 defer_bh (dev
, skb
);
2521 if (netif_running (dev
->net
)
2522 && !test_bit (EVENT_RX_HALT
, &dev
->flags
)) {
2523 rx_submit (dev
, urb
, GFP_ATOMIC
);
2529 devdbg (dev
, "no read resubmitted");
2530 #endif /* VERBOSE */
2533 /*-------------------------------------------------------------------------*/
2535 // unlink pending rx/tx; completion handlers do all other cleanup
2537 static int unlink_urbs (struct usbnet
*dev
, struct sk_buff_head
*q
)
2539 unsigned long flags
;
2540 struct sk_buff
*skb
, *skbnext
;
2543 spin_lock_irqsave (&q
->lock
, flags
);
2544 for (skb
= q
->next
; skb
!= (struct sk_buff
*) q
; skb
= skbnext
) {
2545 struct skb_data
*entry
;
2549 entry
= (struct skb_data
*) skb
->cb
;
2551 skbnext
= skb
->next
;
2553 // during some PM-driven resume scenarios,
2554 // these (async) unlinks complete immediately
2555 retval
= usb_unlink_urb (urb
);
2556 if (retval
!= -EINPROGRESS
&& retval
!= 0)
2557 devdbg (dev
, "unlink urb err, %d", retval
);
2561 spin_unlock_irqrestore (&q
->lock
, flags
);
2566 /*-------------------------------------------------------------------------*/
2568 // precondition: never called in_interrupt
2570 static int usbnet_stop (struct net_device
*net
)
2572 struct usbnet
*dev
= (struct usbnet
*) net
->priv
;
2574 DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup
);
2575 DECLARE_WAITQUEUE (wait
, current
);
2577 netif_stop_queue (net
);
2579 if (dev
->msg_level
>= 2)
2580 devinfo (dev
, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
2581 dev
->stats
.rx_packets
, dev
->stats
.tx_packets
,
2582 dev
->stats
.rx_errors
, dev
->stats
.tx_errors
2585 // ensure there are no more active urbs
2586 add_wait_queue (&unlink_wakeup
, &wait
);
2587 dev
->wait
= &unlink_wakeup
;
2588 temp
= unlink_urbs (dev
, &dev
->txq
) + unlink_urbs (dev
, &dev
->rxq
);
2590 // maybe wait for deletions to finish.
2591 while (skb_queue_len (&dev
->rxq
)
2592 && skb_queue_len (&dev
->txq
)
2593 && skb_queue_len (&dev
->done
)) {
2594 msleep(UNLINK_TIMEOUT_MS
);
2595 devdbg (dev
, "waited for %d urb completions", temp
);
2598 remove_wait_queue (&unlink_wakeup
, &wait
);
2600 /* deferred work (task, timer, softirq) must also stop.
2601 * can't flush_scheduled_work() until we drop rtnl (later),
2602 * else workers could deadlock; so make workers a NOP.
2605 del_timer_sync (&dev
->delay
);
2606 tasklet_kill (&dev
->bh
);
2611 /*-------------------------------------------------------------------------*/
2613 // posts reads, and enables write queuing
2615 // precondition: never called in_interrupt
2617 static int usbnet_open (struct net_device
*net
)
2619 struct usbnet
*dev
= (struct usbnet
*) net
->priv
;
2621 struct driver_info
*info
= dev
->driver_info
;
2623 // put into "known safe" state
2624 if (info
->reset
&& (retval
= info
->reset (dev
)) < 0) {
2625 devinfo (dev
, "open reset fail (%d) usbnet usb-%s-%s, %s",
2627 dev
->udev
->bus
->bus_name
, dev
->udev
->devpath
,
2632 // insist peer be connected
2633 if (info
->check_connect
&& (retval
= info
->check_connect (dev
)) < 0) {
2634 devdbg (dev
, "can't open; %d", retval
);
2638 netif_start_queue (net
);
2639 if (dev
->msg_level
>= 2) {
2642 if (dev
->driver_info
->flags
& FLAG_FRAMING_NC
)
2643 framing
= "NetChip";
2644 else if (dev
->driver_info
->flags
& FLAG_FRAMING_GL
)
2645 framing
= "GeneSys";
2646 else if (dev
->driver_info
->flags
& FLAG_FRAMING_Z
)
2648 else if (dev
->driver_info
->flags
& FLAG_FRAMING_RN
)
2653 devinfo (dev
, "open: enable queueing "
2654 "(rx %d, tx %d) mtu %d %s framing",
2655 RX_QLEN (dev
), TX_QLEN (dev
), dev
->net
->mtu
,
2659 // delay posting reads until we're fully open
2660 tasklet_schedule (&dev
->bh
);
2665 /*-------------------------------------------------------------------------*/
2667 static void usbnet_get_drvinfo (struct net_device
*net
, struct ethtool_drvinfo
*info
)
2669 struct usbnet
*dev
= net
->priv
;
2671 strncpy (info
->driver
, driver_name
, sizeof info
->driver
);
2672 strncpy (info
->version
, DRIVER_VERSION
, sizeof info
->version
);
2673 strncpy (info
->fw_version
, dev
->driver_info
->description
,
2674 sizeof info
->fw_version
);
2675 usb_make_path (dev
->udev
, info
->bus_info
, sizeof info
->bus_info
);
2678 static u32
usbnet_get_link (struct net_device
*net
)
2680 struct usbnet
*dev
= net
->priv
;
2682 /* If a check_connect is defined, return it's results */
2683 if (dev
->driver_info
->check_connect
)
2684 return dev
->driver_info
->check_connect (dev
) == 0;
2686 /* Otherwise, we're up to avoid breaking scripts */
2690 static u32
usbnet_get_msglevel (struct net_device
*net
)
2692 struct usbnet
*dev
= net
->priv
;
2694 return dev
->msg_level
;
2697 static void usbnet_set_msglevel (struct net_device
*net
, u32 level
)
2699 struct usbnet
*dev
= net
->priv
;
2701 dev
->msg_level
= level
;
2704 static int usbnet_ioctl (struct net_device
*net
, struct ifreq
*rq
, int cmd
)
2708 struct usbnet
*dev
= (struct usbnet
*)net
->priv
;
2710 if (dev
->mii
.mdio_read
!= NULL
&& dev
->mii
.mdio_write
!= NULL
)
2711 return generic_mii_ioctl(&dev
->mii
, if_mii(rq
), cmd
, NULL
);
2717 /*-------------------------------------------------------------------------*/
2719 /* work that cannot be done in interrupt context uses keventd.
2721 * NOTE: with 2.5 we could do more of this using completion callbacks,
2722 * especially now that control transfers can be queued.
2727 struct usbnet
*dev
= data
;
2730 /* usb_clear_halt() needs a thread context */
2731 if (test_bit (EVENT_TX_HALT
, &dev
->flags
)) {
2732 unlink_urbs (dev
, &dev
->txq
);
2733 status
= usb_clear_halt (dev
->udev
, dev
->out
);
2735 deverr (dev
, "can't clear tx halt, status %d",
2738 clear_bit (EVENT_TX_HALT
, &dev
->flags
);
2739 netif_wake_queue (dev
->net
);
2742 if (test_bit (EVENT_RX_HALT
, &dev
->flags
)) {
2743 unlink_urbs (dev
, &dev
->rxq
);
2744 status
= usb_clear_halt (dev
->udev
, dev
->in
);
2746 deverr (dev
, "can't clear rx halt, status %d",
2749 clear_bit (EVENT_RX_HALT
, &dev
->flags
);
2750 tasklet_schedule (&dev
->bh
);
2754 /* tasklet could resubmit itself forever if memory is tight */
2755 if (test_bit (EVENT_RX_MEMORY
, &dev
->flags
)) {
2756 struct urb
*urb
= NULL
;
2758 if (netif_running (dev
->net
))
2759 urb
= usb_alloc_urb (0, GFP_KERNEL
);
2761 clear_bit (EVENT_RX_MEMORY
, &dev
->flags
);
2763 clear_bit (EVENT_RX_MEMORY
, &dev
->flags
);
2764 rx_submit (dev
, urb
, GFP_KERNEL
);
2765 tasklet_schedule (&dev
->bh
);
2770 devdbg (dev
, "kevent done, flags = 0x%lx",
2774 /*-------------------------------------------------------------------------*/
2776 static void tx_complete (struct urb
*urb
, struct pt_regs
*regs
)
2778 struct sk_buff
*skb
= (struct sk_buff
*) urb
->context
;
2779 struct skb_data
*entry
= (struct skb_data
*) skb
->cb
;
2780 struct usbnet
*dev
= entry
->dev
;
2782 if (urb
->status
== 0) {
2783 dev
->stats
.tx_packets
++;
2784 dev
->stats
.tx_bytes
+= entry
->length
;
2786 dev
->stats
.tx_errors
++;
2788 switch (urb
->status
) {
2790 defer_kevent (dev
, EVENT_TX_HALT
);
2793 // like rx, tx gets controller i/o faults during khubd delays
2794 // and so it uses the same throttling mechanism.
2795 case -EPROTO
: // ehci
2796 case -ETIMEDOUT
: // ohci
2797 case -EILSEQ
: // uhci
2798 if (!timer_pending (&dev
->delay
)) {
2799 mod_timer (&dev
->delay
,
2800 jiffies
+ THROTTLE_JIFFIES
);
2801 devdbg (dev
, "tx throttle %d", urb
->status
);
2803 netif_stop_queue (dev
->net
);
2806 devdbg (dev
, "tx err %d", entry
->urb
->status
);
2812 entry
->state
= tx_done
;
2813 defer_bh (dev
, skb
);
2816 /*-------------------------------------------------------------------------*/
2818 static void usbnet_tx_timeout (struct net_device
*net
)
2820 struct usbnet
*dev
= (struct usbnet
*) net
->priv
;
2822 unlink_urbs (dev
, &dev
->txq
);
2823 tasklet_schedule (&dev
->bh
);
2825 // FIXME: device recovery -- reset?
2828 /*-------------------------------------------------------------------------*/
2830 static int usbnet_start_xmit (struct sk_buff
*skb
, struct net_device
*net
)
2832 struct usbnet
*dev
= (struct usbnet
*) net
->priv
;
2834 int retval
= NET_XMIT_SUCCESS
;
2835 struct urb
*urb
= NULL
;
2836 struct skb_data
*entry
;
2837 struct driver_info
*info
= dev
->driver_info
;
2838 unsigned long flags
;
2839 #ifdef CONFIG_USB_NET1080
2840 struct nc_header
*header
= NULL
;
2841 struct nc_trailer
*trailer
= NULL
;
2842 #endif /* CONFIG_USB_NET1080 */
2844 // some devices want funky USB-level framing, for
2845 // win32 driver (usually) and/or hardware quirks
2846 if (info
->tx_fixup
) {
2847 skb
= info
->tx_fixup (dev
, skb
, GFP_ATOMIC
);
2849 devdbg (dev
, "can't tx_fixup skb");
2855 if (!(urb
= usb_alloc_urb (0, GFP_ATOMIC
))) {
2856 devdbg (dev
, "no urb");
2860 entry
= (struct skb_data
*) skb
->cb
;
2863 entry
->state
= tx_start
;
2864 entry
->length
= length
;
2866 // FIXME: reorganize a bit, so that fixup() fills out NetChip
2867 // framing too. (Packet ID update needs the spinlock...)
2868 // [ BETTER: we already own net->xmit_lock, that's enough ]
2870 #ifdef CONFIG_USB_NET1080
2871 if (info
->flags
& FLAG_FRAMING_NC
) {
2872 header
= (struct nc_header
*) skb_push (skb
, sizeof *header
);
2873 header
->hdr_len
= cpu_to_le16 (sizeof (*header
));
2874 header
->packet_len
= cpu_to_le16 (length
);
2875 if (!((skb
->len
+ sizeof *trailer
) & 0x01))
2876 *skb_put (skb
, 1) = PAD_BYTE
;
2877 trailer
= (struct nc_trailer
*) skb_put (skb
, sizeof *trailer
);
2879 #endif /* CONFIG_USB_NET1080 */
2881 usb_fill_bulk_urb (urb
, dev
->udev
, dev
->out
,
2882 skb
->data
, skb
->len
, tx_complete
, skb
);
2883 urb
->transfer_flags
|= URB_ASYNC_UNLINK
;
2885 /* don't assume the hardware handles USB_ZERO_PACKET
2886 * NOTE: strictly conforming cdc-ether devices should expect
2887 * the ZLP here, but ignore the one-byte packet.
2889 * FIXME zero that byte, if it doesn't require a new skb.
2891 if ((length
% dev
->maxpacket
) == 0)
2892 urb
->transfer_buffer_length
++;
2894 spin_lock_irqsave (&dev
->txq
.lock
, flags
);
2896 #ifdef CONFIG_USB_NET1080
2897 if (info
->flags
& FLAG_FRAMING_NC
) {
2898 header
->packet_id
= cpu_to_le16 ((u16
)dev
->dev_packet_id
++);
2899 put_unaligned (header
->packet_id
, &trailer
->packet_id
);
2901 devdbg (dev
, "frame >tx h %d p %d id %d",
2902 header
->hdr_len
, header
->packet_len
,
2906 #endif /* CONFIG_USB_NET1080 */
2908 switch ((retval
= usb_submit_urb (urb
, GFP_ATOMIC
))) {
2910 netif_stop_queue (net
);
2911 defer_kevent (dev
, EVENT_TX_HALT
);
2914 devdbg (dev
, "tx: submit urb err %d", retval
);
2917 net
->trans_start
= jiffies
;
2918 __skb_queue_tail (&dev
->txq
, skb
);
2919 if (dev
->txq
.qlen
>= TX_QLEN (dev
))
2920 netif_stop_queue (net
);
2922 spin_unlock_irqrestore (&dev
->txq
.lock
, flags
);
2925 devdbg (dev
, "drop, code %d", retval
);
2927 retval
= NET_XMIT_SUCCESS
;
2928 dev
->stats
.tx_dropped
++;
2930 dev_kfree_skb_any (skb
);
2934 devdbg (dev
, "> tx, len %d, type 0x%x",
2935 length
, skb
->protocol
);
2942 /*-------------------------------------------------------------------------*/
2944 // tasklet (work deferred from completions, in_irq) or timer
2946 static void usbnet_bh (unsigned long param
)
2948 struct usbnet
*dev
= (struct usbnet
*) param
;
2949 struct sk_buff
*skb
;
2950 struct skb_data
*entry
;
2952 while ((skb
= skb_dequeue (&dev
->done
))) {
2953 entry
= (struct skb_data
*) skb
->cb
;
2954 switch (entry
->state
) {
2956 entry
->state
= rx_cleanup
;
2957 rx_process (dev
, skb
);
2961 usb_free_urb (entry
->urb
);
2962 dev_kfree_skb (skb
);
2965 devdbg (dev
, "bogus skb state %d", entry
->state
);
2969 // waiting for all pending urbs to complete?
2971 if ((dev
->txq
.qlen
+ dev
->rxq
.qlen
+ dev
->done
.qlen
) == 0) {
2972 wake_up (dev
->wait
);
2975 // or are we maybe short a few urbs?
2976 } else if (netif_running (dev
->net
)
2977 && netif_device_present (dev
->net
)
2978 && !timer_pending (&dev
->delay
)
2979 && !test_bit (EVENT_RX_HALT
, &dev
->flags
)) {
2980 int temp
= dev
->rxq
.qlen
;
2981 int qlen
= RX_QLEN (dev
);
2987 // don't refill the queue all at once
2988 for (i
= 0; i
< 10 && dev
->rxq
.qlen
< qlen
; i
++) {
2989 if ((urb
= usb_alloc_urb (0, GFP_ATOMIC
)) != 0)
2990 rx_submit (dev
, urb
, GFP_ATOMIC
);
2992 if (temp
!= dev
->rxq
.qlen
)
2993 devdbg (dev
, "rxqlen %d --> %d",
2994 temp
, dev
->rxq
.qlen
);
2995 if (dev
->rxq
.qlen
< qlen
)
2996 tasklet_schedule (&dev
->bh
);
2998 if (dev
->txq
.qlen
< TX_QLEN (dev
))
2999 netif_wake_queue (dev
->net
);
3005 /*-------------------------------------------------------------------------
3007 * USB Device Driver support
3009 *-------------------------------------------------------------------------*/
3011 // precondition: never called in_interrupt
3013 static void usbnet_disconnect (struct usb_interface
*intf
)
3016 struct usb_device
*xdev
;
3018 dev
= usb_get_intfdata(intf
);
3019 usb_set_intfdata(intf
, NULL
);
3023 xdev
= interface_to_usbdev (intf
);
3025 devinfo (dev
, "unregister usbnet usb-%s-%s, %s",
3026 xdev
->bus
->bus_name
, xdev
->devpath
,
3027 dev
->driver_info
->description
);
3029 unregister_netdev (dev
->net
);
3031 /* we don't hold rtnl here ... */
3032 flush_scheduled_work ();
3034 if (dev
->driver_info
->unbind
)
3035 dev
->driver_info
->unbind (dev
, intf
);
3037 free_netdev(dev
->net
);
3043 /*-------------------------------------------------------------------------*/
3045 static struct ethtool_ops usbnet_ethtool_ops
;
3047 // precondition: never called in_interrupt
3050 usbnet_probe (struct usb_interface
*udev
, const struct usb_device_id
*prod
)
3053 struct net_device
*net
;
3054 struct usb_host_interface
*interface
;
3055 struct driver_info
*info
;
3056 struct usb_device
*xdev
;
3059 info
= (struct driver_info
*) prod
->driver_info
;
3061 dev_dbg (&udev
->dev
, "blacklisted by %s\n", driver_name
);
3064 xdev
= interface_to_usbdev (udev
);
3065 interface
= udev
->cur_altsetting
;
3071 // set up our own records
3072 if (!(dev
= kmalloc (sizeof *dev
, GFP_KERNEL
))) {
3073 dbg ("can't kmalloc dev");
3076 memset (dev
, 0, sizeof *dev
);
3079 dev
->driver_info
= info
;
3080 dev
->msg_level
= msg_level
;
3081 skb_queue_head_init (&dev
->rxq
);
3082 skb_queue_head_init (&dev
->txq
);
3083 skb_queue_head_init (&dev
->done
);
3084 dev
->bh
.func
= usbnet_bh
;
3085 dev
->bh
.data
= (unsigned long) dev
;
3086 INIT_WORK (&dev
->kevent
, kevent
, dev
);
3087 dev
->delay
.function
= usbnet_bh
;
3088 dev
->delay
.data
= (unsigned long) dev
;
3089 init_timer (&dev
->delay
);
3091 // set up network interface records
3092 net
= alloc_etherdev(0);
3096 SET_MODULE_OWNER (net
);
3099 strcpy (net
->name
, "usb%d");
3100 memcpy (net
->dev_addr
, node_id
, sizeof node_id
);
3103 // dma_supported() is deeply broken on almost all architectures
3104 // possible with some EHCI controllers
3105 if (dma_supported (&udev
->dev
, 0xffffffffffffffffULL
))
3106 net
->features
|= NETIF_F_HIGHDMA
;
3109 net
->change_mtu
= usbnet_change_mtu
;
3110 net
->get_stats
= usbnet_get_stats
;
3111 net
->hard_start_xmit
= usbnet_start_xmit
;
3112 net
->open
= usbnet_open
;
3113 net
->stop
= usbnet_stop
;
3114 net
->watchdog_timeo
= TX_TIMEOUT_JIFFIES
;
3115 net
->tx_timeout
= usbnet_tx_timeout
;
3116 net
->do_ioctl
= usbnet_ioctl
;
3117 net
->ethtool_ops
= &usbnet_ethtool_ops
;
3119 // allow device-specific bind/init procedures
3120 // NOTE net->name still not usable ...
3122 status
= info
->bind (dev
, udev
);
3123 // heuristic: "usb%d" for links we know are two-host,
3124 // else "eth%d" when there's reasonable doubt. userspace
3125 // can rename the link if it knows better.
3126 if ((dev
->driver_info
->flags
& FLAG_ETHER
) != 0
3127 && (net
->dev_addr
[0] & 0x02) == 0)
3128 strcpy (net
->name
, "eth%d");
3129 } else if (!info
->in
|| info
->out
)
3130 status
= get_endpoints (dev
, udev
);
3132 dev
->in
= usb_rcvbulkpipe (xdev
, info
->in
);
3133 dev
->out
= usb_sndbulkpipe (xdev
, info
->out
);
3134 if (!(info
->flags
& FLAG_NO_SETINT
))
3135 status
= usb_set_interface (xdev
,
3136 interface
->desc
.bInterfaceNumber
,
3137 interface
->desc
.bAlternateSetting
);
3145 dev
->maxpacket
= usb_maxpacket (dev
->udev
, dev
->out
, 1);
3147 SET_NETDEV_DEV(dev
->net
, &udev
->dev
);
3148 status
= register_netdev (dev
->net
);
3151 devinfo (dev
, "register usbnet at usb-%s-%s, %s",
3152 xdev
->bus
->bus_name
, xdev
->devpath
,
3153 dev
->driver_info
->description
);
3155 // ok, it's ready to go.
3156 usb_set_intfdata (udev
, dev
);
3158 // start as if the link is up
3159 netif_device_attach (dev
->net
);
3165 info
->unbind (dev
, udev
);
3175 /*-------------------------------------------------------------------------*/
3177 #ifndef HAVE_HARDWARE
3178 #error You need to configure some hardware for this driver
3182 * chip vendor names won't normally be on the cables, and
3183 * may not be on the device.
3186 static const struct usb_device_id products
[] = {
3188 #ifdef CONFIG_USB_ALI_M5632
3190 USB_DEVICE (0x0402, 0x5632), // ALi defaults
3191 .driver_info
= (unsigned long) &ali_m5632_info
,
3195 #ifdef CONFIG_USB_AN2720
3197 USB_DEVICE (0x0547, 0x2720), // AnchorChips defaults
3198 .driver_info
= (unsigned long) &an2720_info
,
3200 USB_DEVICE (0x0547, 0x2727), // Xircom PGUNET
3201 .driver_info
= (unsigned long) &an2720_info
,
3205 #ifdef CONFIG_USB_BELKIN
3207 USB_DEVICE (0x050d, 0x0004), // Belkin
3208 .driver_info
= (unsigned long) &belkin_info
,
3210 USB_DEVICE (0x056c, 0x8100), // eTEK
3211 .driver_info
= (unsigned long) &belkin_info
,
3213 USB_DEVICE (0x0525, 0x9901), // Advance USBNET (eTEK)
3214 .driver_info
= (unsigned long) &belkin_info
,
3218 #ifdef CONFIG_USB_AX8817X
3221 USB_DEVICE (0x077b, 0x2226),
3222 .driver_info
= (unsigned long) &ax8817x_info
,
3225 USB_DEVICE (0x0846, 0x1040),
3226 .driver_info
= (unsigned long) &netgear_fa120_info
,
3229 USB_DEVICE (0x2001, 0x1a00),
3230 .driver_info
= (unsigned long) &dlink_dub_e100_info
,
3232 // Intellinet, ST Lab USB Ethernet
3233 USB_DEVICE (0x0b95, 0x1720),
3234 .driver_info
= (unsigned long) &ax8817x_info
,
3236 // Hawking UF200, TrendNet TU2-ET100
3237 USB_DEVICE (0x07b8, 0x420a),
3238 .driver_info
= (unsigned long) &hawking_uf200_info
,
3240 // Billionton Systems, USB2AR
3241 USB_DEVICE (0x08dd, 0x90ff),
3242 .driver_info
= (unsigned long) &ax8817x_info
,
3245 USB_DEVICE (0x0557, 0x2009),
3246 .driver_info
= (unsigned long) &ax8817x_info
,
3248 // Buffalo LUA-U2-KTX
3249 USB_DEVICE (0x0411, 0x003d),
3250 .driver_info
= (unsigned long) &ax8817x_info
,
3252 // Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
3253 USB_DEVICE (0x6189, 0x182d),
3254 .driver_info
= (unsigned long) &ax8817x_info
,
3258 #ifdef CONFIG_USB_EPSON2888
3260 USB_DEVICE (0x0525, 0x2888), // EPSON USB client
3261 .driver_info
= (unsigned long) &epson2888_info
,
3265 #ifdef CONFIG_USB_GENESYS
3267 USB_DEVICE (0x05e3, 0x0502), // GL620USB-A
3268 .driver_info
= (unsigned long) &genelink_info
,
3270 /* NOT: USB_DEVICE (0x05e3, 0x0501), // GL620USB
3271 * that's half duplex, not currently supported
3275 #ifdef CONFIG_USB_NET1080
3277 USB_DEVICE (0x0525, 0x1080), // NetChip ref design
3278 .driver_info
= (unsigned long) &net1080_info
,
3280 USB_DEVICE (0x06D0, 0x0622), // Laplink Gold
3281 .driver_info
= (unsigned long) &net1080_info
,
3285 #ifdef CONFIG_USB_PL2301
3287 USB_DEVICE (0x067b, 0x0000), // PL-2301
3288 .driver_info
= (unsigned long) &prolific_info
,
3290 USB_DEVICE (0x067b, 0x0001), // PL-2302
3291 .driver_info
= (unsigned long) &prolific_info
,
3295 #ifdef CONFIG_USB_RNDIS
3297 /* RNDIS is MSFT's un-official variant of CDC ACM */
3298 USB_INTERFACE_INFO (USB_CLASS_COMM
, 2 /* ACM */, 0x0ff),
3299 .driver_info
= (unsigned long) &rndis_info
,
3303 #ifdef CONFIG_USB_ARMLINUX
3305 * SA-1100 using standard ARM Linux kernels, or compatible.
3306 * Often used when talking to Linux PDAs (iPaq, Yopy, etc).
3307 * The sa-1100 "usb-eth" driver handles the basic framing.
3309 * PXA25x or PXA210 ... these use a "usb-eth" driver much like
3310 * the sa1100 one, but hardware uses different endpoint numbers.
3313 // 1183 = 0x049F, both used as hex values?
3314 // Compaq "Itsy" vendor/product id
3315 USB_DEVICE (0x049F, 0x505A),
3316 .driver_info
= (unsigned long) &linuxdev_info
,
3318 USB_DEVICE (0x0E7E, 0x1001), // G.Mate "Yopy"
3319 .driver_info
= (unsigned long) &yopy_info
,
3321 USB_DEVICE (0x8086, 0x07d3), // "blob" bootloader
3322 .driver_info
= (unsigned long) &blob_info
,
3326 #ifdef CONFIG_USB_ZAURUS
3328 * SA-1100 based Sharp Zaurus ("collie"), or compatible.
3329 * Same idea as above, but different framing.
3331 * PXA-2xx based models are also lying-about-cdc.
3334 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
3335 | USB_DEVICE_ID_MATCH_DEVICE
,
3337 .idProduct
= 0x8004,
3338 /* match the master interface */
3339 .bInterfaceClass
= USB_CLASS_COMM
,
3340 .bInterfaceSubClass
= 6 /* Ethernet model */,
3341 .bInterfaceProtocol
= 0,
3342 .driver_info
= (unsigned long) &zaurus_sl5x00_info
,
3344 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
3345 | USB_DEVICE_ID_MATCH_DEVICE
,
3347 .idProduct
= 0x8005, /* A-300 */
3348 .bInterfaceClass
= 0x02,
3349 .bInterfaceSubClass
= 0x0a,
3350 .bInterfaceProtocol
= 0x00,
3351 .driver_info
= (unsigned long) &zaurus_pxa_info
,
3353 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
3354 | USB_DEVICE_ID_MATCH_DEVICE
,
3356 .idProduct
= 0x8006, /* B-500/SL-5600 */
3357 .bInterfaceClass
= 0x02,
3358 .bInterfaceSubClass
= 0x0a,
3359 .bInterfaceProtocol
= 0x00,
3360 .driver_info
= (unsigned long) &zaurus_pxa_info
,
3362 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
3363 | USB_DEVICE_ID_MATCH_DEVICE
,
3365 .idProduct
= 0x8007, /* C-700 */
3366 .bInterfaceClass
= 0x02,
3367 .bInterfaceSubClass
= 0x0a,
3368 .bInterfaceProtocol
= 0x00,
3369 .driver_info
= (unsigned long) &zaurus_pxa_info
,
3371 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
3372 | USB_DEVICE_ID_MATCH_DEVICE
,
3374 .idProduct
= 0x9031, /* C-750 C-760 */
3375 .bInterfaceClass
= 0x02,
3376 .bInterfaceSubClass
= 0x0a,
3377 .bInterfaceProtocol
= 0x00,
3378 .driver_info
= (unsigned long) &zaurus_pxa_info
,
3380 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
3381 | USB_DEVICE_ID_MATCH_DEVICE
,
3383 .idProduct
= 0x9032, /* SL-6000 */
3384 .bInterfaceClass
= 0x02,
3385 .bInterfaceSubClass
= 0x0a,
3386 .bInterfaceProtocol
= 0x00,
3387 .driver_info
= (unsigned long) &zaurus_pxa_info
,
3389 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
3390 | USB_DEVICE_ID_MATCH_DEVICE
,
3392 .idProduct
= 0x9050, /* C-860 */
3393 .bInterfaceClass
= 0x02,
3394 .bInterfaceSubClass
= 0x0a,
3395 .bInterfaceProtocol
= 0x00,
3396 .driver_info
= (unsigned long) &zaurus_pxa_info
,
3400 #ifdef CONFIG_USB_CDCETHER
3402 #ifndef CONFIG_USB_ZAURUS
3403 /* if we couldn't whitelist Zaurus, we must blacklist it */
3405 .match_flags
= USB_DEVICE_ID_MATCH_INT_INFO
3406 | USB_DEVICE_ID_MATCH_DEVICE
,
3408 .idProduct
= 0x8004,
3409 /* match the master interface */
3410 .bInterfaceClass
= USB_CLASS_COMM
,
3411 .bInterfaceSubClass
= 6 /* Ethernet model */,
3412 .bInterfaceProtocol
= 0,
3413 .driver_info
= 0, /* BLACKLIST */
3415 // FIXME blacklist the other Zaurus models too, sigh
3419 /* CDC Ether uses two interfaces, not necessarily consecutive.
3420 * We match the main interface, ignoring the optional device
3421 * class so we could handle devices that aren't exclusively
3424 * NOTE: this match must come AFTER entries working around
3425 * bugs/quirks in a given product (like Zaurus, above).
3427 USB_INTERFACE_INFO (USB_CLASS_COMM
, 6 /* Ethernet model */, 0),
3428 .driver_info
= (unsigned long) &cdc_info
,
3434 MODULE_DEVICE_TABLE (usb
, products
);
3436 static struct usb_driver usbnet_driver
= {
3437 .owner
= THIS_MODULE
,
3438 .name
= driver_name
,
3439 .id_table
= products
,
3440 .probe
= usbnet_probe
,
3441 .disconnect
= usbnet_disconnect
,
3444 /* Default ethtool_ops assigned. Devices can override in their bind() routine */
3445 static struct ethtool_ops usbnet_ethtool_ops
= {
3446 .get_drvinfo
= usbnet_get_drvinfo
,
3447 .get_link
= usbnet_get_link
,
3448 .get_msglevel
= usbnet_get_msglevel
,
3449 .set_msglevel
= usbnet_set_msglevel
,
3452 /*-------------------------------------------------------------------------*/
3454 static int __init
usbnet_init (void)
3456 // compiler should optimize these out
3457 BUG_ON (sizeof (((struct sk_buff
*)0)->cb
)
3458 < sizeof (struct skb_data
));
3459 #ifdef CONFIG_USB_CDCETHER
3460 BUG_ON ((sizeof (((struct usbnet
*)0)->data
)
3461 < sizeof (struct cdc_state
)));
3464 random_ether_addr(node_id
);
3466 return usb_register(&usbnet_driver
);
3468 module_init (usbnet_init
);
3470 static void __exit
usbnet_exit (void)
3472 usb_deregister (&usbnet_driver
);
3474 module_exit (usbnet_exit
);
3476 MODULE_AUTHOR ("David Brownell <dbrownell@users.sourceforge.net>");
3477 MODULE_DESCRIPTION ("USB Host-to-Host Link Drivers (numerous vendors)");
3478 MODULE_LICENSE ("GPL");