1 /****************************************************************
3 * kaweth.c - driver for KL5KUSB101 based USB->Ethernet
5 * (c) 2000 Interlan Communications
6 * (c) 2000 Stephane Alnet
8 * (C) 2002 Oliver Neukum
10 * Original author: The Zapman <zapman@interlan.net>
11 * Inspired by, and much credit goes to Michael Rothwell
12 * <rothwell@interlan.net> for the test equipment, help, and patience
13 * Based off of (and with thanks to) Petko Manolov's pegaus.c driver.
14 * Also many thanks to Joel Silverman and Ed Surprenant at Kawasaki
15 * for providing the firmware and driver resources.
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2, or
20 * (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software Foundation,
29 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
31 ****************************************************************/
34 * Fix in_interrupt() problem
35 * Develop test procedures for USB net interfaces
37 * Fix bugs from previous two steps
38 * Snoop other OSs for any tricks we're not doing
40 * Reduce arbitrary timeouts
41 * Smart multicast support
42 * Temporary MAC change support
43 * Tunable SOFs parameter - ioctl()?
44 * Ethernet stats collection
45 * Code formatting improvements
48 #include <linux/module.h>
49 #include <linux/sched.h>
50 #include <linux/slab.h>
51 #include <linux/string.h>
52 #include <linux/init.h>
53 #include <linux/delay.h>
54 #include <linux/netdevice.h>
55 #include <linux/etherdevice.h>
56 #include <linux/usb.h>
57 #include <linux/types.h>
58 #include <linux/ethtool.h>
59 #include <linux/pci.h>
60 #include <linux/dma-mapping.h>
61 #include <linux/wait.h>
62 #include <asm/uaccess.h>
63 #include <asm/semaphore.h>
64 #include <asm/byteorder.h>
69 #define kaweth_dbg(format, arg...) printk(KERN_DEBUG __FILE__ ": " format "\n" ,##arg)
71 #define kaweth_dbg(format, arg...) do {} while (0)
73 #define kaweth_err(format, arg...) printk(KERN_ERR __FILE__ ": " format "\n" ,##arg)
74 #define kaweth_info(format, arg...) printk(KERN_INFO __FILE__ ": " format "\n" , ##arg)
75 #define kaweth_warn(format, arg...) printk(KERN_WARNING __FILE__ ": " format "\n" , ##arg)
80 #define KAWETH_MTU 1514
81 #define KAWETH_BUF_SIZE 1664
82 #define KAWETH_TX_TIMEOUT (5 * HZ)
83 #define KAWETH_SCRATCH_SIZE 32
84 #define KAWETH_FIRMWARE_BUF_SIZE 4096
85 #define KAWETH_CONTROL_TIMEOUT (30 * HZ)
87 #define KAWETH_STATUS_BROKEN 0x0000001
88 #define KAWETH_STATUS_CLOSING 0x0000002
90 #define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01
91 #define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02
92 #define KAWETH_PACKET_FILTER_DIRECTED 0x04
93 #define KAWETH_PACKET_FILTER_BROADCAST 0x08
94 #define KAWETH_PACKET_FILTER_MULTICAST 0x10
97 #define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00
98 #define KAWETH_COMMAND_MULTICAST_FILTERS 0x01
99 #define KAWETH_COMMAND_SET_PACKET_FILTER 0x02
100 #define KAWETH_COMMAND_STATISTICS 0x03
101 #define KAWETH_COMMAND_SET_TEMP_MAC 0x06
102 #define KAWETH_COMMAND_GET_TEMP_MAC 0x07
103 #define KAWETH_COMMAND_SET_URB_SIZE 0x08
104 #define KAWETH_COMMAND_SET_SOFS_WAIT 0x09
105 #define KAWETH_COMMAND_SCAN 0xFF
107 #define KAWETH_SOFS_TO_WAIT 0x05
109 #define INTBUFFERSIZE 4
111 #define STATE_OFFSET 0
112 #define STATE_MASK 0x40
113 #define STATE_SHIFT 5
116 MODULE_AUTHOR("Michael Zappe <zapman@interlan.net>, Stephane Alnet <stephane@u-picardie.fr>, Brad Hards <bhards@bigpond.net.au> and Oliver Neukum <oliver@neukum.org>");
117 MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver");
118 MODULE_LICENSE("GPL");
120 static const char driver_name
[] = "kaweth";
122 static int kaweth_probe(
123 struct usb_interface
*intf
,
124 const struct usb_device_id
*id
/* from id_table */
126 static void kaweth_disconnect(struct usb_interface
*intf
);
127 static int kaweth_internal_control_msg(struct usb_device
*usb_dev
,
129 struct usb_ctrlrequest
*cmd
, void *data
,
130 int len
, int timeout
);
132 /****************************************************************
134 ****************************************************************/
135 static struct usb_device_id usb_klsi_table
[] = {
136 { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */
137 { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */
138 { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */
139 { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */
140 { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */
141 { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */
142 { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */
143 { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */
144 { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */
145 { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */
146 { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */
147 { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */
148 { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */
149 { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */
150 { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */
151 { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */
152 { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */
153 { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */
154 { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */
155 { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */
156 { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */
157 { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */
158 { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */
159 { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */
160 { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */
161 { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */
162 { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */
163 { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */
164 { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */
165 { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */
166 { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */
167 { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */
168 { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */
169 { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */
170 {} /* Null terminator */
173 MODULE_DEVICE_TABLE (usb
, usb_klsi_table
);
175 /****************************************************************
177 ****************************************************************/
178 static struct usb_driver kaweth_driver
= {
180 .probe
= kaweth_probe
,
181 .disconnect
= kaweth_disconnect
,
182 .id_table
= usb_klsi_table
,
185 typedef __u8 eth_addr_t
[6];
187 /****************************************************************
189 ****************************************************************/
197 /****************************************************************
198 * kaweth_ethernet_configuration
200 ****************************************************************/
201 struct kaweth_ethernet_configuration
207 __u32 statistics_mask
;
209 __u16 max_multicast_filters
;
211 } __attribute__ ((packed
));
213 /****************************************************************
215 ****************************************************************/
218 spinlock_t device_lock
;
222 int suspend_lowmem_rx
;
223 int suspend_lowmem_ctrl
;
225 struct work_struct lowmem_work
;
227 struct usb_device
*dev
;
228 struct net_device
*net
;
229 wait_queue_head_t term_wait
;
235 dma_addr_t intbufferhandle
;
237 dma_addr_t rxbufferhandle
;
241 struct sk_buff
*tx_skb
;
244 __u8 scratch
[KAWETH_SCRATCH_SIZE
];
245 __u16 packet_filter_bitmap
;
247 struct kaweth_ethernet_configuration configuration
;
249 struct net_device_stats stats
;
253 /****************************************************************
255 ****************************************************************/
256 static int kaweth_control(struct kaweth_device
*kaweth
,
266 struct usb_ctrlrequest
*dr
;
268 kaweth_dbg("kaweth_control()");
271 kaweth_dbg("in_interrupt()");
275 dr
= kmalloc(sizeof(struct usb_ctrlrequest
), GFP_ATOMIC
);
278 kaweth_dbg("kmalloc() failed");
282 dr
->bRequestType
= requesttype
;
283 dr
->bRequest
= request
;
284 dr
->wValue
= cpu_to_le16p(&value
);
285 dr
->wIndex
= cpu_to_le16p(&index
);
286 dr
->wLength
= cpu_to_le16p(&size
);
288 return kaweth_internal_control_msg(kaweth
->dev
,
296 /****************************************************************
297 * kaweth_read_configuration
298 ****************************************************************/
299 static int kaweth_read_configuration(struct kaweth_device
*kaweth
)
303 kaweth_dbg("Reading kaweth configuration");
305 retval
= kaweth_control(kaweth
,
306 usb_rcvctrlpipe(kaweth
->dev
, 0),
307 KAWETH_COMMAND_GET_ETHERNET_DESC
,
308 USB_TYPE_VENDOR
| USB_DIR_IN
| USB_RECIP_DEVICE
,
311 (void *)&kaweth
->configuration
,
312 sizeof(kaweth
->configuration
),
313 KAWETH_CONTROL_TIMEOUT
);
318 /****************************************************************
319 * kaweth_set_urb_size
320 ****************************************************************/
321 static int kaweth_set_urb_size(struct kaweth_device
*kaweth
, __u16 urb_size
)
325 kaweth_dbg("Setting URB size to %d", (unsigned)urb_size
);
327 retval
= kaweth_control(kaweth
,
328 usb_sndctrlpipe(kaweth
->dev
, 0),
329 KAWETH_COMMAND_SET_URB_SIZE
,
330 USB_TYPE_VENDOR
| USB_DIR_OUT
| USB_RECIP_DEVICE
,
333 (void *)&kaweth
->scratch
,
335 KAWETH_CONTROL_TIMEOUT
);
340 /****************************************************************
341 * kaweth_set_sofs_wait
342 ****************************************************************/
343 static int kaweth_set_sofs_wait(struct kaweth_device
*kaweth
, __u16 sofs_wait
)
347 kaweth_dbg("Set SOFS wait to %d", (unsigned)sofs_wait
);
349 retval
= kaweth_control(kaweth
,
350 usb_sndctrlpipe(kaweth
->dev
, 0),
351 KAWETH_COMMAND_SET_SOFS_WAIT
,
352 USB_TYPE_VENDOR
| USB_DIR_OUT
| USB_RECIP_DEVICE
,
355 (void *)&kaweth
->scratch
,
357 KAWETH_CONTROL_TIMEOUT
);
362 /****************************************************************
363 * kaweth_set_receive_filter
364 ****************************************************************/
365 static int kaweth_set_receive_filter(struct kaweth_device
*kaweth
,
366 __u16 receive_filter
)
370 kaweth_dbg("Set receive filter to %d", (unsigned)receive_filter
);
372 retval
= kaweth_control(kaweth
,
373 usb_sndctrlpipe(kaweth
->dev
, 0),
374 KAWETH_COMMAND_SET_PACKET_FILTER
,
375 USB_TYPE_VENDOR
| USB_DIR_OUT
| USB_RECIP_DEVICE
,
378 (void *)&kaweth
->scratch
,
380 KAWETH_CONTROL_TIMEOUT
);
385 /****************************************************************
386 * kaweth_download_firmware
387 ****************************************************************/
388 static int kaweth_download_firmware(struct kaweth_device
*kaweth
,
394 if(data_len
> KAWETH_FIRMWARE_BUF_SIZE
) {
395 kaweth_err("Firmware too big: %d", data_len
);
399 memcpy(kaweth
->firmware_buf
, data
, data_len
);
401 kaweth
->firmware_buf
[2] = (data_len
& 0xFF) - 7;
402 kaweth
->firmware_buf
[3] = data_len
>> 8;
403 kaweth
->firmware_buf
[4] = type
;
404 kaweth
->firmware_buf
[5] = interrupt
;
406 kaweth_dbg("High: %i, Low:%i", kaweth
->firmware_buf
[3],
407 kaweth
->firmware_buf
[2]);
409 kaweth_dbg("Downloading firmware at %p to kaweth device at %p",
412 kaweth_dbg("Firmware length: %d", data_len
);
414 return kaweth_control(kaweth
,
415 usb_sndctrlpipe(kaweth
->dev
, 0),
417 USB_TYPE_VENDOR
| USB_DIR_OUT
| USB_RECIP_DEVICE
,
420 (void *)kaweth
->firmware_buf
,
422 KAWETH_CONTROL_TIMEOUT
);
425 /****************************************************************
426 * kaweth_trigger_firmware
427 ****************************************************************/
428 static int kaweth_trigger_firmware(struct kaweth_device
*kaweth
,
431 kaweth
->firmware_buf
[0] = 0xB6;
432 kaweth
->firmware_buf
[1] = 0xC3;
433 kaweth
->firmware_buf
[2] = 0x01;
434 kaweth
->firmware_buf
[3] = 0x00;
435 kaweth
->firmware_buf
[4] = 0x06;
436 kaweth
->firmware_buf
[5] = interrupt
;
437 kaweth
->firmware_buf
[6] = 0x00;
438 kaweth
->firmware_buf
[7] = 0x00;
440 kaweth_dbg("Triggering firmware");
442 return kaweth_control(kaweth
,
443 usb_sndctrlpipe(kaweth
->dev
, 0),
445 USB_TYPE_VENDOR
| USB_DIR_OUT
| USB_RECIP_DEVICE
,
448 (void *)kaweth
->firmware_buf
,
450 KAWETH_CONTROL_TIMEOUT
);
453 /****************************************************************
455 ****************************************************************/
456 static int kaweth_reset(struct kaweth_device
*kaweth
)
460 kaweth_dbg("kaweth_reset(%p)", kaweth
);
461 result
= kaweth_control(kaweth
,
462 usb_sndctrlpipe(kaweth
->dev
, 0),
463 USB_REQ_SET_CONFIGURATION
,
465 kaweth
->dev
->config
[0].desc
.bConfigurationValue
,
469 KAWETH_CONTROL_TIMEOUT
);
473 kaweth_dbg("kaweth_reset() returns %d.",result
);
478 static void kaweth_usb_receive(struct urb
*);
479 static int kaweth_resubmit_rx_urb(struct kaweth_device
*, gfp_t
);
481 /****************************************************************
483 *****************************************************************/
485 static void kaweth_resubmit_int_urb(struct kaweth_device
*kaweth
, gfp_t mf
)
489 status
= usb_submit_urb (kaweth
->irq_urb
, mf
);
490 if (unlikely(status
== -ENOMEM
)) {
491 kaweth
->suspend_lowmem_ctrl
= 1;
492 schedule_delayed_work(&kaweth
->lowmem_work
, HZ
/4);
494 kaweth
->suspend_lowmem_ctrl
= 0;
498 err ("can't resubmit intr, %s-%s, status %d",
499 kaweth
->dev
->bus
->bus_name
,
500 kaweth
->dev
->devpath
, status
);
503 static void int_callback(struct urb
*u
)
505 struct kaweth_device
*kaweth
= u
->context
;
509 case 0: /* success */
511 case -ECONNRESET
: /* unlink */
515 /* -EPIPE: should clear the halt */
520 /* we check the link state to report changes */
521 if (kaweth
->linkstate
!= (act_state
= ( kaweth
->intbuffer
[STATE_OFFSET
] | STATE_MASK
) >> STATE_SHIFT
)) {
523 netif_carrier_on(kaweth
->net
);
525 netif_carrier_off(kaweth
->net
);
527 kaweth
->linkstate
= act_state
;
530 kaweth_resubmit_int_urb(kaweth
, GFP_ATOMIC
);
533 static void kaweth_resubmit_tl(void *d
)
535 struct kaweth_device
*kaweth
= (struct kaweth_device
*)d
;
537 if (kaweth
->status
| KAWETH_STATUS_CLOSING
)
540 if (kaweth
->suspend_lowmem_rx
)
541 kaweth_resubmit_rx_urb(kaweth
, GFP_NOIO
);
543 if (kaweth
->suspend_lowmem_ctrl
)
544 kaweth_resubmit_int_urb(kaweth
, GFP_NOIO
);
548 /****************************************************************
549 * kaweth_resubmit_rx_urb
550 ****************************************************************/
551 static int kaweth_resubmit_rx_urb(struct kaweth_device
*kaweth
,
556 usb_fill_bulk_urb(kaweth
->rx_urb
,
558 usb_rcvbulkpipe(kaweth
->dev
, 1),
563 kaweth
->rx_urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
564 kaweth
->rx_urb
->transfer_dma
= kaweth
->rxbufferhandle
;
566 if((result
= usb_submit_urb(kaweth
->rx_urb
, mem_flags
))) {
567 if (result
== -ENOMEM
) {
568 kaweth
->suspend_lowmem_rx
= 1;
569 schedule_delayed_work(&kaweth
->lowmem_work
, HZ
/4);
571 kaweth_err("resubmitting rx_urb %d failed", result
);
573 kaweth
->suspend_lowmem_rx
= 0;
579 static void kaweth_async_set_rx_mode(struct kaweth_device
*kaweth
);
581 /****************************************************************
583 ****************************************************************/
584 static void kaweth_usb_receive(struct urb
*urb
)
586 struct kaweth_device
*kaweth
= urb
->context
;
587 struct net_device
*net
= kaweth
->net
;
589 int count
= urb
->actual_length
;
590 int count2
= urb
->transfer_buffer_length
;
592 __u16 pkt_len
= le16_to_cpup((__le16
*)kaweth
->rx_buf
);
596 if(unlikely(urb
->status
== -ECONNRESET
|| urb
->status
== -ESHUTDOWN
))
597 /* we are killed - set a flag and wake the disconnect handler */
600 wake_up(&kaweth
->term_wait
);
604 if (kaweth
->status
& KAWETH_STATUS_CLOSING
)
607 if(urb
->status
&& urb
->status
!= -EREMOTEIO
&& count
!= 1) {
608 kaweth_err("%s RX status: %d count: %d packet_len: %d",
613 kaweth_resubmit_rx_urb(kaweth
, GFP_ATOMIC
);
617 if(kaweth
->net
&& (count
> 2)) {
618 if(pkt_len
> (count
- 2)) {
619 kaweth_err("Packet length too long for USB frame (pkt_len: %x, count: %x)",pkt_len
, count
);
620 kaweth_err("Packet len & 2047: %x", pkt_len
& 2047);
621 kaweth_err("Count 2: %x", count2
);
622 kaweth_resubmit_rx_urb(kaweth
, GFP_ATOMIC
);
626 if(!(skb
= dev_alloc_skb(pkt_len
+2))) {
627 kaweth_resubmit_rx_urb(kaweth
, GFP_ATOMIC
);
631 skb_reserve(skb
, 2); /* Align IP on 16 byte boundaries */
635 eth_copy_and_sum(skb
, kaweth
->rx_buf
+ 2, pkt_len
, 0);
637 skb_put(skb
, pkt_len
);
639 skb
->protocol
= eth_type_trans(skb
, net
);
643 kaweth
->stats
.rx_packets
++;
644 kaweth
->stats
.rx_bytes
+= pkt_len
;
647 kaweth_resubmit_rx_urb(kaweth
, GFP_ATOMIC
);
650 /****************************************************************
652 ****************************************************************/
653 static int kaweth_open(struct net_device
*net
)
655 struct kaweth_device
*kaweth
= netdev_priv(net
);
658 kaweth_dbg("Opening network device.");
660 res
= kaweth_resubmit_rx_urb(kaweth
, GFP_KERNEL
);
667 usb_rcvintpipe(kaweth
->dev
, 3),
672 250); /* overriding the descriptor */
673 kaweth
->irq_urb
->transfer_dma
= kaweth
->intbufferhandle
;
674 kaweth
->irq_urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
676 res
= usb_submit_urb(kaweth
->irq_urb
, GFP_KERNEL
);
678 usb_kill_urb(kaweth
->rx_urb
);
682 netif_start_queue(net
);
684 kaweth_async_set_rx_mode(kaweth
);
688 /****************************************************************
690 ****************************************************************/
691 static int kaweth_close(struct net_device
*net
)
693 struct kaweth_device
*kaweth
= netdev_priv(net
);
695 netif_stop_queue(net
);
697 kaweth
->status
|= KAWETH_STATUS_CLOSING
;
699 usb_kill_urb(kaweth
->irq_urb
);
700 usb_kill_urb(kaweth
->rx_urb
);
701 usb_kill_urb(kaweth
->tx_urb
);
703 flush_scheduled_work();
705 /* a scheduled work may have resubmitted,
707 usb_kill_urb(kaweth
->irq_urb
);
708 usb_kill_urb(kaweth
->rx_urb
);
710 kaweth
->status
&= ~KAWETH_STATUS_CLOSING
;
715 static void kaweth_get_drvinfo(struct net_device
*dev
, struct ethtool_drvinfo
*info
)
718 strlcpy(info
->driver
, driver_name
, sizeof(info
->driver
));
721 static struct ethtool_ops ops
= {
722 .get_drvinfo
= kaweth_get_drvinfo
725 /****************************************************************
726 * kaweth_usb_transmit_complete
727 ****************************************************************/
728 static void kaweth_usb_transmit_complete(struct urb
*urb
)
730 struct kaweth_device
*kaweth
= urb
->context
;
731 struct sk_buff
*skb
= kaweth
->tx_skb
;
733 if (unlikely(urb
->status
!= 0))
734 if (urb
->status
!= -ENOENT
)
735 kaweth_dbg("%s: TX status %d.", kaweth
->net
->name
, urb
->status
);
737 netif_wake_queue(kaweth
->net
);
738 dev_kfree_skb_irq(skb
);
741 /****************************************************************
743 ****************************************************************/
744 static int kaweth_start_xmit(struct sk_buff
*skb
, struct net_device
*net
)
746 struct kaweth_device
*kaweth
= netdev_priv(net
);
747 __le16
*private_header
;
751 spin_lock(&kaweth
->device_lock
);
753 kaweth_async_set_rx_mode(kaweth
);
754 netif_stop_queue(net
);
756 /* We now decide whether we can put our special header into the sk_buff */
757 if (skb_cloned(skb
) || skb_headroom(skb
) < 2) {
758 /* no such luck - we make our own */
759 struct sk_buff
*copied_skb
;
760 copied_skb
= skb_copy_expand(skb
, 2, 0, GFP_ATOMIC
);
761 dev_kfree_skb_irq(skb
);
764 kaweth
->stats
.tx_errors
++;
765 netif_start_queue(net
);
766 spin_unlock(&kaweth
->device_lock
);
771 private_header
= (__le16
*)__skb_push(skb
, 2);
772 *private_header
= cpu_to_le16(skb
->len
-2);
773 kaweth
->tx_skb
= skb
;
775 usb_fill_bulk_urb(kaweth
->tx_urb
,
777 usb_sndbulkpipe(kaweth
->dev
, 2),
780 kaweth_usb_transmit_complete
,
784 if((res
= usb_submit_urb(kaweth
->tx_urb
, GFP_ATOMIC
)))
786 kaweth_warn("kaweth failed tx_urb %d", res
);
787 kaweth
->stats
.tx_errors
++;
789 netif_start_queue(net
);
790 dev_kfree_skb_irq(skb
);
794 kaweth
->stats
.tx_packets
++;
795 kaweth
->stats
.tx_bytes
+= skb
->len
;
796 net
->trans_start
= jiffies
;
799 spin_unlock(&kaweth
->device_lock
);
804 /****************************************************************
806 ****************************************************************/
807 static void kaweth_set_rx_mode(struct net_device
*net
)
809 struct kaweth_device
*kaweth
= netdev_priv(net
);
811 __u16 packet_filter_bitmap
= KAWETH_PACKET_FILTER_DIRECTED
|
812 KAWETH_PACKET_FILTER_BROADCAST
|
813 KAWETH_PACKET_FILTER_MULTICAST
;
815 kaweth_dbg("Setting Rx mode to %d", packet_filter_bitmap
);
817 netif_stop_queue(net
);
819 if (net
->flags
& IFF_PROMISC
) {
820 packet_filter_bitmap
|= KAWETH_PACKET_FILTER_PROMISCUOUS
;
822 else if ((net
->mc_count
) || (net
->flags
& IFF_ALLMULTI
)) {
823 packet_filter_bitmap
|= KAWETH_PACKET_FILTER_ALL_MULTICAST
;
826 kaweth
->packet_filter_bitmap
= packet_filter_bitmap
;
827 netif_wake_queue(net
);
830 /****************************************************************
831 * kaweth_async_set_rx_mode
832 ****************************************************************/
833 static void kaweth_async_set_rx_mode(struct kaweth_device
*kaweth
)
835 __u16 packet_filter_bitmap
= kaweth
->packet_filter_bitmap
;
836 kaweth
->packet_filter_bitmap
= 0;
837 if (packet_filter_bitmap
== 0)
842 result
= kaweth_control(kaweth
,
843 usb_sndctrlpipe(kaweth
->dev
, 0),
844 KAWETH_COMMAND_SET_PACKET_FILTER
,
845 USB_TYPE_VENDOR
| USB_DIR_OUT
| USB_RECIP_DEVICE
,
846 packet_filter_bitmap
,
848 (void *)&kaweth
->scratch
,
850 KAWETH_CONTROL_TIMEOUT
);
853 kaweth_err("Failed to set Rx mode: %d", result
);
856 kaweth_dbg("Set Rx mode to %d", packet_filter_bitmap
);
861 /****************************************************************
862 * kaweth_netdev_stats
863 ****************************************************************/
864 static struct net_device_stats
*kaweth_netdev_stats(struct net_device
*dev
)
866 struct kaweth_device
*kaweth
= netdev_priv(dev
);
867 return &kaweth
->stats
;
870 /****************************************************************
872 ****************************************************************/
873 static void kaweth_tx_timeout(struct net_device
*net
)
875 struct kaweth_device
*kaweth
= netdev_priv(net
);
877 kaweth_warn("%s: Tx timed out. Resetting.", net
->name
);
878 kaweth
->stats
.tx_errors
++;
879 net
->trans_start
= jiffies
;
881 usb_unlink_urb(kaweth
->tx_urb
);
884 /****************************************************************
886 ****************************************************************/
887 static int kaweth_probe(
888 struct usb_interface
*intf
,
889 const struct usb_device_id
*id
/* from id_table */
892 struct usb_device
*dev
= interface_to_usbdev(intf
);
893 struct kaweth_device
*kaweth
;
894 struct net_device
*netdev
;
895 const eth_addr_t bcast_addr
= { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
898 kaweth_dbg("Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x",
900 le16_to_cpu(dev
->descriptor
.idVendor
),
901 le16_to_cpu(dev
->descriptor
.idProduct
),
902 le16_to_cpu(dev
->descriptor
.bcdDevice
));
904 kaweth_dbg("Device at %p", dev
);
906 kaweth_dbg("Descriptor length: %x type: %x",
907 (int)dev
->descriptor
.bLength
,
908 (int)dev
->descriptor
.bDescriptorType
);
910 netdev
= alloc_etherdev(sizeof(*kaweth
));
914 kaweth
= netdev_priv(netdev
);
916 kaweth
->net
= netdev
;
918 spin_lock_init(&kaweth
->device_lock
);
919 init_waitqueue_head(&kaweth
->term_wait
);
921 kaweth_dbg("Resetting.");
923 kaweth_reset(kaweth
);
926 * If high byte of bcdDevice is nonzero, firmware is already
927 * downloaded. Don't try to do it again, or we'll hang the device.
930 if (le16_to_cpu(dev
->descriptor
.bcdDevice
) >> 8) {
931 kaweth_info("Firmware present in device.");
933 /* Download the firmware */
934 kaweth_info("Downloading firmware...");
935 kaweth
->firmware_buf
= (__u8
*)__get_free_page(GFP_KERNEL
);
936 if ((result
= kaweth_download_firmware(kaweth
,
941 kaweth_err("Error downloading firmware (%d)", result
);
945 if ((result
= kaweth_download_firmware(kaweth
,
947 len_kaweth_new_code_fix
,
950 kaweth_err("Error downloading firmware fix (%d)", result
);
954 if ((result
= kaweth_download_firmware(kaweth
,
956 len_kaweth_trigger_code
,
959 kaweth_err("Error downloading trigger code (%d)", result
);
964 if ((result
= kaweth_download_firmware(kaweth
,
965 kaweth_trigger_code_fix
,
966 len_kaweth_trigger_code_fix
,
969 kaweth_err("Error downloading trigger code fix (%d)", result
);
974 if ((result
= kaweth_trigger_firmware(kaweth
, 126)) < 0) {
975 kaweth_err("Error triggering firmware (%d)", result
);
979 /* Device will now disappear for a moment... */
980 kaweth_info("Firmware loaded. I'll be back...");
982 free_page((unsigned long)kaweth
->firmware_buf
);
987 result
= kaweth_read_configuration(kaweth
);
990 kaweth_err("Error reading configuration (%d), no net device created", result
);
991 goto err_free_netdev
;
994 kaweth_info("Statistics collection: %x", kaweth
->configuration
.statistics_mask
);
995 kaweth_info("Multicast filter limit: %x", kaweth
->configuration
.max_multicast_filters
& ((1 << 15) - 1));
996 kaweth_info("MTU: %d", le16_to_cpu(kaweth
->configuration
.segment_size
));
997 kaweth_info("Read MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
998 (int)kaweth
->configuration
.hw_addr
[0],
999 (int)kaweth
->configuration
.hw_addr
[1],
1000 (int)kaweth
->configuration
.hw_addr
[2],
1001 (int)kaweth
->configuration
.hw_addr
[3],
1002 (int)kaweth
->configuration
.hw_addr
[4],
1003 (int)kaweth
->configuration
.hw_addr
[5]);
1005 if(!memcmp(&kaweth
->configuration
.hw_addr
,
1007 sizeof(bcast_addr
))) {
1008 kaweth_err("Firmware not functioning properly, no net device created");
1009 goto err_free_netdev
;
1012 if(kaweth_set_urb_size(kaweth
, KAWETH_BUF_SIZE
) < 0) {
1013 kaweth_dbg("Error setting URB size");
1014 goto err_free_netdev
;
1017 if(kaweth_set_sofs_wait(kaweth
, KAWETH_SOFS_TO_WAIT
) < 0) {
1018 kaweth_err("Error setting SOFS wait");
1019 goto err_free_netdev
;
1022 result
= kaweth_set_receive_filter(kaweth
,
1023 KAWETH_PACKET_FILTER_DIRECTED
|
1024 KAWETH_PACKET_FILTER_BROADCAST
|
1025 KAWETH_PACKET_FILTER_MULTICAST
);
1028 kaweth_err("Error setting receive filter");
1029 goto err_free_netdev
;
1032 kaweth_dbg("Initializing net device.");
1034 kaweth
->tx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1035 if (!kaweth
->tx_urb
)
1036 goto err_free_netdev
;
1037 kaweth
->rx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1038 if (!kaweth
->rx_urb
)
1040 kaweth
->irq_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1041 if (!kaweth
->irq_urb
)
1044 kaweth
->intbuffer
= usb_buffer_alloc( kaweth
->dev
,
1047 &kaweth
->intbufferhandle
);
1048 if (!kaweth
->intbuffer
)
1049 goto err_tx_and_rx_and_irq
;
1050 kaweth
->rx_buf
= usb_buffer_alloc( kaweth
->dev
,
1053 &kaweth
->rxbufferhandle
);
1054 if (!kaweth
->rx_buf
)
1055 goto err_all_but_rxbuf
;
1057 memcpy(netdev
->broadcast
, &bcast_addr
, sizeof(bcast_addr
));
1058 memcpy(netdev
->dev_addr
, &kaweth
->configuration
.hw_addr
,
1059 sizeof(kaweth
->configuration
.hw_addr
));
1061 netdev
->open
= kaweth_open
;
1062 netdev
->stop
= kaweth_close
;
1064 netdev
->watchdog_timeo
= KAWETH_TX_TIMEOUT
;
1065 netdev
->tx_timeout
= kaweth_tx_timeout
;
1067 netdev
->hard_start_xmit
= kaweth_start_xmit
;
1068 netdev
->set_multicast_list
= kaweth_set_rx_mode
;
1069 netdev
->get_stats
= kaweth_netdev_stats
;
1070 netdev
->mtu
= le16_to_cpu(kaweth
->configuration
.segment_size
);
1071 SET_ETHTOOL_OPS(netdev
, &ops
);
1073 /* kaweth is zeroed as part of alloc_netdev */
1075 INIT_WORK(&kaweth
->lowmem_work
, kaweth_resubmit_tl
, (void *)kaweth
);
1077 SET_MODULE_OWNER(netdev
);
1079 usb_set_intfdata(intf
, kaweth
);
1082 // dma_supported() is deeply broken on almost all architectures
1083 if (dma_supported (&intf
->dev
, 0xffffffffffffffffULL
))
1084 kaweth
->net
->features
|= NETIF_F_HIGHDMA
;
1087 SET_NETDEV_DEV(netdev
, &intf
->dev
);
1088 if (register_netdev(netdev
) != 0) {
1089 kaweth_err("Error registering netdev.");
1093 kaweth_info("kaweth interface created at %s", kaweth
->net
->name
);
1095 kaweth_dbg("Kaweth probe returning.");
1100 usb_set_intfdata(intf
, NULL
);
1101 usb_buffer_free(kaweth
->dev
, KAWETH_BUF_SIZE
, (void *)kaweth
->rx_buf
, kaweth
->rxbufferhandle
);
1103 usb_buffer_free(kaweth
->dev
, INTBUFFERSIZE
, (void *)kaweth
->intbuffer
, kaweth
->intbufferhandle
);
1104 err_tx_and_rx_and_irq
:
1105 usb_free_urb(kaweth
->irq_urb
);
1107 usb_free_urb(kaweth
->rx_urb
);
1109 usb_free_urb(kaweth
->tx_urb
);
1111 free_netdev(netdev
);
1116 /****************************************************************
1118 ****************************************************************/
1119 static void kaweth_disconnect(struct usb_interface
*intf
)
1121 struct kaweth_device
*kaweth
= usb_get_intfdata(intf
);
1122 struct net_device
*netdev
;
1124 kaweth_info("Unregistering");
1126 usb_set_intfdata(intf
, NULL
);
1128 kaweth_warn("unregistering non-existant device");
1131 netdev
= kaweth
->net
;
1133 kaweth_dbg("Unregistering net device");
1134 unregister_netdev(netdev
);
1136 usb_free_urb(kaweth
->rx_urb
);
1137 usb_free_urb(kaweth
->tx_urb
);
1138 usb_free_urb(kaweth
->irq_urb
);
1140 usb_buffer_free(kaweth
->dev
, KAWETH_BUF_SIZE
, (void *)kaweth
->rx_buf
, kaweth
->rxbufferhandle
);
1141 usb_buffer_free(kaweth
->dev
, INTBUFFERSIZE
, (void *)kaweth
->intbuffer
, kaweth
->intbufferhandle
);
1143 free_netdev(netdev
);
1147 // FIXME this completion stuff is a modified clone of
1148 // an OLD version of some stuff in usb.c ...
1149 struct usb_api_data
{
1150 wait_queue_head_t wqh
;
1154 /*-------------------------------------------------------------------*
1155 * completion handler for compatibility wrappers (sync control/bulk) *
1156 *-------------------------------------------------------------------*/
1157 static void usb_api_blocking_completion(struct urb
*urb
)
1159 struct usb_api_data
*awd
= (struct usb_api_data
*)urb
->context
;
1165 /*-------------------------------------------------------------------*
1166 * COMPATIBILITY STUFF *
1167 *-------------------------------------------------------------------*/
1169 // Starts urb and waits for completion or timeout
1170 static int usb_start_wait_urb(struct urb
*urb
, int timeout
, int* actual_length
)
1172 struct usb_api_data awd
;
1175 init_waitqueue_head(&awd
.wqh
);
1178 urb
->context
= &awd
;
1179 status
= usb_submit_urb(urb
, GFP_NOIO
);
1181 // something went wrong
1186 if (!wait_event_timeout(awd
.wqh
, awd
.done
, timeout
)) {
1188 kaweth_warn("usb_control/bulk_msg: timeout");
1189 usb_kill_urb(urb
); // remove urb safely
1190 status
= -ETIMEDOUT
;
1193 status
= urb
->status
;
1196 if (actual_length
) {
1197 *actual_length
= urb
->actual_length
;
1204 /*-------------------------------------------------------------------*/
1205 // returns status (negative) or length (positive)
1206 static int kaweth_internal_control_msg(struct usb_device
*usb_dev
,
1208 struct usb_ctrlrequest
*cmd
, void *data
,
1209 int len
, int timeout
)
1215 urb
= usb_alloc_urb(0, GFP_NOIO
);
1219 usb_fill_control_urb(urb
, usb_dev
, pipe
, (unsigned char*)cmd
, data
,
1220 len
, usb_api_blocking_completion
, NULL
);
1222 retv
= usb_start_wait_urb(urb
, timeout
, &length
);
1232 /****************************************************************
1234 ****************************************************************/
1235 static int __init
kaweth_init(void)
1237 kaweth_dbg("Driver loading");
1238 return usb_register(&kaweth_driver
);
1241 /****************************************************************
1243 ****************************************************************/
1244 static void __exit
kaweth_exit(void)
1246 usb_deregister(&kaweth_driver
);
1249 module_init(kaweth_init
);
1250 module_exit(kaweth_exit
);