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a19259c3 DG |
1 | /* |
2 | * ipheth.c - Apple iPhone USB Ethernet driver | |
3 | * | |
4 | * Copyright (c) 2009 Diego Giagio <diego@giagio.com> | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3. Neither the name of GIAGIO.COM nor the names of its contributors | |
16 | * may be used to endorse or promote products derived from this software | |
17 | * without specific prior written permission. | |
18 | * | |
19 | * Alternatively, provided that this notice is retained in full, this | |
20 | * software may be distributed under the terms of the GNU General | |
21 | * Public License ("GPL") version 2, in which case the provisions of the | |
22 | * GPL apply INSTEAD OF those given above. | |
23 | * | |
24 | * The provided data structures and external interfaces from this code | |
25 | * are not restricted to be used by modules with a GPL compatible license. | |
26 | * | |
27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
28 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
29 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
30 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
31 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
32 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
33 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
34 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
35 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
36 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
37 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | |
38 | * DAMAGE. | |
39 | * | |
40 | * | |
41 | * Attention: iPhone device must be paired, otherwise it won't respond to our | |
42 | * driver. For more info: http://giagio.com/wiki/moin.cgi/iPhoneEthernetDriver | |
43 | * | |
44 | */ | |
45 | ||
46 | #include <linux/kernel.h> | |
47 | #include <linux/errno.h> | |
48 | #include <linux/init.h> | |
49 | #include <linux/slab.h> | |
50 | #include <linux/module.h> | |
51 | #include <linux/netdevice.h> | |
52 | #include <linux/etherdevice.h> | |
53 | #include <linux/ethtool.h> | |
54 | #include <linux/usb.h> | |
55 | #include <linux/workqueue.h> | |
56 | ||
57 | #define USB_VENDOR_APPLE 0x05ac | |
58 | #define USB_PRODUCT_IPHONE 0x1290 | |
59 | #define USB_PRODUCT_IPHONE_3G 0x1292 | |
60 | #define USB_PRODUCT_IPHONE_3GS 0x1294 | |
f95d76ab | 61 | #define USB_PRODUCT_IPHONE_4 0x1297 |
6de0298e | 62 | #define USB_PRODUCT_IPAD 0x129a |
02009afc | 63 | #define USB_PRODUCT_IPHONE_4_VZW 0x129c |
72ba009b | 64 | #define USB_PRODUCT_IPHONE_4S 0x12a0 |
af1b85e4 | 65 | #define USB_PRODUCT_IPHONE_5 0x12a8 |
a19259c3 DG |
66 | |
67 | #define IPHETH_USBINTF_CLASS 255 | |
68 | #define IPHETH_USBINTF_SUBCLASS 253 | |
69 | #define IPHETH_USBINTF_PROTO 1 | |
70 | ||
71 | #define IPHETH_BUF_SIZE 1516 | |
9c412942 | 72 | #define IPHETH_IP_ALIGN 2 /* padding at front of URB */ |
a19259c3 DG |
73 | #define IPHETH_TX_TIMEOUT (5 * HZ) |
74 | ||
75 | #define IPHETH_INTFNUM 2 | |
76 | #define IPHETH_ALT_INTFNUM 1 | |
77 | ||
78 | #define IPHETH_CTRL_ENDP 0x00 | |
79 | #define IPHETH_CTRL_BUF_SIZE 0x40 | |
80 | #define IPHETH_CTRL_TIMEOUT (5 * HZ) | |
81 | ||
82 | #define IPHETH_CMD_GET_MACADDR 0x00 | |
83 | #define IPHETH_CMD_CARRIER_CHECK 0x45 | |
84 | ||
85 | #define IPHETH_CARRIER_CHECK_TIMEOUT round_jiffies_relative(1 * HZ) | |
86 | #define IPHETH_CARRIER_ON 0x04 | |
87 | ||
88 | static struct usb_device_id ipheth_table[] = { | |
89 | { USB_DEVICE_AND_INTERFACE_INFO( | |
90 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE, | |
91 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
92 | IPHETH_USBINTF_PROTO) }, | |
93 | { USB_DEVICE_AND_INTERFACE_INFO( | |
94 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3G, | |
95 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
96 | IPHETH_USBINTF_PROTO) }, | |
97 | { USB_DEVICE_AND_INTERFACE_INFO( | |
98 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3GS, | |
99 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
100 | IPHETH_USBINTF_PROTO) }, | |
f95d76ab JA |
101 | { USB_DEVICE_AND_INTERFACE_INFO( |
102 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4, | |
103 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
104 | IPHETH_USBINTF_PROTO) }, | |
6de0298e DG |
105 | { USB_DEVICE_AND_INTERFACE_INFO( |
106 | USB_VENDOR_APPLE, USB_PRODUCT_IPAD, | |
107 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
108 | IPHETH_USBINTF_PROTO) }, | |
02009afc KS |
109 | { USB_DEVICE_AND_INTERFACE_INFO( |
110 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4_VZW, | |
111 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
112 | IPHETH_USBINTF_PROTO) }, | |
72ba009b TG |
113 | { USB_DEVICE_AND_INTERFACE_INFO( |
114 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_4S, | |
115 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
116 | IPHETH_USBINTF_PROTO) }, | |
af1b85e4 JP |
117 | { USB_DEVICE_AND_INTERFACE_INFO( |
118 | USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_5, | |
119 | IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS, | |
120 | IPHETH_USBINTF_PROTO) }, | |
a19259c3 DG |
121 | { } |
122 | }; | |
123 | MODULE_DEVICE_TABLE(usb, ipheth_table); | |
124 | ||
125 | struct ipheth_device { | |
126 | struct usb_device *udev; | |
127 | struct usb_interface *intf; | |
128 | struct net_device *net; | |
129 | struct sk_buff *tx_skb; | |
130 | struct urb *tx_urb; | |
131 | struct urb *rx_urb; | |
132 | unsigned char *tx_buf; | |
133 | unsigned char *rx_buf; | |
134 | unsigned char *ctrl_buf; | |
135 | u8 bulk_in; | |
136 | u8 bulk_out; | |
137 | struct delayed_work carrier_work; | |
138 | }; | |
139 | ||
140 | static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags); | |
141 | ||
142 | static int ipheth_alloc_urbs(struct ipheth_device *iphone) | |
143 | { | |
144 | struct urb *tx_urb = NULL; | |
145 | struct urb *rx_urb = NULL; | |
146 | u8 *tx_buf = NULL; | |
147 | u8 *rx_buf = NULL; | |
148 | ||
149 | tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
150 | if (tx_urb == NULL) | |
d87ff58f | 151 | goto error_nomem; |
a19259c3 DG |
152 | |
153 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
154 | if (rx_urb == NULL) | |
d87ff58f | 155 | goto free_tx_urb; |
a19259c3 | 156 | |
997ea58e DM |
157 | tx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, |
158 | GFP_KERNEL, &tx_urb->transfer_dma); | |
a19259c3 | 159 | if (tx_buf == NULL) |
d87ff58f | 160 | goto free_rx_urb; |
a19259c3 | 161 | |
997ea58e DM |
162 | rx_buf = usb_alloc_coherent(iphone->udev, IPHETH_BUF_SIZE, |
163 | GFP_KERNEL, &rx_urb->transfer_dma); | |
a19259c3 | 164 | if (rx_buf == NULL) |
d87ff58f | 165 | goto free_tx_buf; |
a19259c3 DG |
166 | |
167 | ||
168 | iphone->tx_urb = tx_urb; | |
169 | iphone->rx_urb = rx_urb; | |
170 | iphone->tx_buf = tx_buf; | |
171 | iphone->rx_buf = rx_buf; | |
172 | return 0; | |
173 | ||
d87ff58f | 174 | free_tx_buf: |
997ea58e DM |
175 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, tx_buf, |
176 | tx_urb->transfer_dma); | |
d87ff58f | 177 | free_rx_urb: |
a19259c3 | 178 | usb_free_urb(rx_urb); |
d87ff58f | 179 | free_tx_urb: |
a19259c3 | 180 | usb_free_urb(tx_urb); |
d87ff58f | 181 | error_nomem: |
a19259c3 DG |
182 | return -ENOMEM; |
183 | } | |
184 | ||
185 | static void ipheth_free_urbs(struct ipheth_device *iphone) | |
186 | { | |
997ea58e DM |
187 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->rx_buf, |
188 | iphone->rx_urb->transfer_dma); | |
189 | usb_free_coherent(iphone->udev, IPHETH_BUF_SIZE, iphone->tx_buf, | |
190 | iphone->tx_urb->transfer_dma); | |
a19259c3 DG |
191 | usb_free_urb(iphone->rx_urb); |
192 | usb_free_urb(iphone->tx_urb); | |
193 | } | |
194 | ||
195 | static void ipheth_kill_urbs(struct ipheth_device *dev) | |
196 | { | |
197 | usb_kill_urb(dev->tx_urb); | |
198 | usb_kill_urb(dev->rx_urb); | |
199 | } | |
200 | ||
201 | static void ipheth_rcvbulk_callback(struct urb *urb) | |
202 | { | |
203 | struct ipheth_device *dev; | |
204 | struct sk_buff *skb; | |
205 | int status; | |
206 | char *buf; | |
207 | int len; | |
208 | ||
209 | dev = urb->context; | |
210 | if (dev == NULL) | |
211 | return; | |
212 | ||
213 | status = urb->status; | |
214 | switch (status) { | |
215 | case -ENOENT: | |
216 | case -ECONNRESET: | |
217 | case -ESHUTDOWN: | |
218 | return; | |
219 | case 0: | |
220 | break; | |
221 | default: | |
495f71e2 GKH |
222 | dev_err(&dev->intf->dev, "%s: urb status: %d\n", |
223 | __func__, status); | |
a19259c3 DG |
224 | return; |
225 | } | |
226 | ||
9c412942 BH |
227 | if (urb->actual_length <= IPHETH_IP_ALIGN) { |
228 | dev->net->stats.rx_length_errors++; | |
229 | return; | |
230 | } | |
231 | len = urb->actual_length - IPHETH_IP_ALIGN; | |
232 | buf = urb->transfer_buffer + IPHETH_IP_ALIGN; | |
a19259c3 | 233 | |
9c412942 | 234 | skb = dev_alloc_skb(len); |
a19259c3 | 235 | if (!skb) { |
495f71e2 GKH |
236 | dev_err(&dev->intf->dev, "%s: dev_alloc_skb: -ENOMEM\n", |
237 | __func__); | |
a19259c3 DG |
238 | dev->net->stats.rx_dropped++; |
239 | return; | |
240 | } | |
241 | ||
9c412942 | 242 | memcpy(skb_put(skb, len), buf, len); |
a19259c3 DG |
243 | skb->dev = dev->net; |
244 | skb->protocol = eth_type_trans(skb, dev->net); | |
245 | ||
246 | dev->net->stats.rx_packets++; | |
247 | dev->net->stats.rx_bytes += len; | |
248 | ||
249 | netif_rx(skb); | |
250 | ipheth_rx_submit(dev, GFP_ATOMIC); | |
251 | } | |
252 | ||
253 | static void ipheth_sndbulk_callback(struct urb *urb) | |
254 | { | |
255 | struct ipheth_device *dev; | |
c31fd6c2 | 256 | int status = urb->status; |
a19259c3 DG |
257 | |
258 | dev = urb->context; | |
259 | if (dev == NULL) | |
260 | return; | |
261 | ||
c31fd6c2 ON |
262 | if (status != 0 && |
263 | status != -ENOENT && | |
264 | status != -ECONNRESET && | |
265 | status != -ESHUTDOWN) | |
495f71e2 GKH |
266 | dev_err(&dev->intf->dev, "%s: urb status: %d\n", |
267 | __func__, status); | |
a19259c3 DG |
268 | |
269 | dev_kfree_skb_irq(dev->tx_skb); | |
270 | netif_wake_queue(dev->net); | |
271 | } | |
272 | ||
273 | static int ipheth_carrier_set(struct ipheth_device *dev) | |
274 | { | |
275 | struct usb_device *udev = dev->udev; | |
276 | int retval; | |
277 | ||
278 | retval = usb_control_msg(udev, | |
279 | usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), | |
280 | IPHETH_CMD_CARRIER_CHECK, /* request */ | |
281 | 0xc0, /* request type */ | |
282 | 0x00, /* value */ | |
283 | 0x02, /* index */ | |
284 | dev->ctrl_buf, IPHETH_CTRL_BUF_SIZE, | |
285 | IPHETH_CTRL_TIMEOUT); | |
286 | if (retval < 0) { | |
495f71e2 GKH |
287 | dev_err(&dev->intf->dev, "%s: usb_control_msg: %d\n", |
288 | __func__, retval); | |
a19259c3 DG |
289 | return retval; |
290 | } | |
291 | ||
292 | if (dev->ctrl_buf[0] == IPHETH_CARRIER_ON) | |
293 | netif_carrier_on(dev->net); | |
294 | else | |
295 | netif_carrier_off(dev->net); | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | static void ipheth_carrier_check_work(struct work_struct *work) | |
301 | { | |
302 | struct ipheth_device *dev = container_of(work, struct ipheth_device, | |
303 | carrier_work.work); | |
304 | ||
305 | ipheth_carrier_set(dev); | |
306 | schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT); | |
307 | } | |
308 | ||
309 | static int ipheth_get_macaddr(struct ipheth_device *dev) | |
310 | { | |
311 | struct usb_device *udev = dev->udev; | |
312 | struct net_device *net = dev->net; | |
313 | int retval; | |
314 | ||
315 | retval = usb_control_msg(udev, | |
316 | usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP), | |
317 | IPHETH_CMD_GET_MACADDR, /* request */ | |
318 | 0xc0, /* request type */ | |
319 | 0x00, /* value */ | |
320 | 0x02, /* index */ | |
321 | dev->ctrl_buf, | |
322 | IPHETH_CTRL_BUF_SIZE, | |
323 | IPHETH_CTRL_TIMEOUT); | |
324 | if (retval < 0) { | |
495f71e2 GKH |
325 | dev_err(&dev->intf->dev, "%s: usb_control_msg: %d\n", |
326 | __func__, retval); | |
a19259c3 | 327 | } else if (retval < ETH_ALEN) { |
495f71e2 GKH |
328 | dev_err(&dev->intf->dev, |
329 | "%s: usb_control_msg: short packet: %d bytes\n", | |
a19259c3 DG |
330 | __func__, retval); |
331 | retval = -EINVAL; | |
332 | } else { | |
333 | memcpy(net->dev_addr, dev->ctrl_buf, ETH_ALEN); | |
334 | retval = 0; | |
335 | } | |
336 | ||
337 | return retval; | |
338 | } | |
339 | ||
340 | static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags) | |
341 | { | |
342 | struct usb_device *udev = dev->udev; | |
343 | int retval; | |
344 | ||
345 | usb_fill_bulk_urb(dev->rx_urb, udev, | |
346 | usb_rcvbulkpipe(udev, dev->bulk_in), | |
347 | dev->rx_buf, IPHETH_BUF_SIZE, | |
348 | ipheth_rcvbulk_callback, | |
349 | dev); | |
350 | dev->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
351 | ||
352 | retval = usb_submit_urb(dev->rx_urb, mem_flags); | |
353 | if (retval) | |
495f71e2 GKH |
354 | dev_err(&dev->intf->dev, "%s: usb_submit_urb: %d\n", |
355 | __func__, retval); | |
a19259c3 DG |
356 | return retval; |
357 | } | |
358 | ||
359 | static int ipheth_open(struct net_device *net) | |
360 | { | |
361 | struct ipheth_device *dev = netdev_priv(net); | |
362 | struct usb_device *udev = dev->udev; | |
363 | int retval = 0; | |
364 | ||
365 | usb_set_interface(udev, IPHETH_INTFNUM, IPHETH_ALT_INTFNUM); | |
366 | ||
367 | retval = ipheth_carrier_set(dev); | |
368 | if (retval) | |
369 | return retval; | |
370 | ||
371 | retval = ipheth_rx_submit(dev, GFP_KERNEL); | |
372 | if (retval) | |
373 | return retval; | |
374 | ||
375 | schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT); | |
376 | netif_start_queue(net); | |
377 | return retval; | |
378 | } | |
379 | ||
380 | static int ipheth_close(struct net_device *net) | |
381 | { | |
382 | struct ipheth_device *dev = netdev_priv(net); | |
383 | ||
384 | cancel_delayed_work_sync(&dev->carrier_work); | |
385 | netif_stop_queue(net); | |
386 | return 0; | |
387 | } | |
388 | ||
389 | static int ipheth_tx(struct sk_buff *skb, struct net_device *net) | |
390 | { | |
391 | struct ipheth_device *dev = netdev_priv(net); | |
392 | struct usb_device *udev = dev->udev; | |
393 | int retval; | |
394 | ||
395 | /* Paranoid */ | |
396 | if (skb->len > IPHETH_BUF_SIZE) { | |
9c413ed5 | 397 | WARN(1, "%s: skb too large: %d bytes\n", __func__, skb->len); |
a19259c3 DG |
398 | dev->net->stats.tx_dropped++; |
399 | dev_kfree_skb_irq(skb); | |
400 | return NETDEV_TX_OK; | |
401 | } | |
402 | ||
403 | memcpy(dev->tx_buf, skb->data, skb->len); | |
404 | if (skb->len < IPHETH_BUF_SIZE) | |
405 | memset(dev->tx_buf + skb->len, 0, IPHETH_BUF_SIZE - skb->len); | |
406 | ||
407 | usb_fill_bulk_urb(dev->tx_urb, udev, | |
408 | usb_sndbulkpipe(udev, dev->bulk_out), | |
409 | dev->tx_buf, IPHETH_BUF_SIZE, | |
410 | ipheth_sndbulk_callback, | |
411 | dev); | |
412 | dev->tx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
413 | ||
414 | retval = usb_submit_urb(dev->tx_urb, GFP_ATOMIC); | |
415 | if (retval) { | |
495f71e2 GKH |
416 | dev_err(&dev->intf->dev, "%s: usb_submit_urb: %d\n", |
417 | __func__, retval); | |
a19259c3 DG |
418 | dev->net->stats.tx_errors++; |
419 | dev_kfree_skb_irq(skb); | |
420 | } else { | |
421 | dev->tx_skb = skb; | |
422 | ||
423 | dev->net->stats.tx_packets++; | |
424 | dev->net->stats.tx_bytes += skb->len; | |
425 | netif_stop_queue(net); | |
426 | } | |
427 | ||
428 | return NETDEV_TX_OK; | |
429 | } | |
430 | ||
431 | static void ipheth_tx_timeout(struct net_device *net) | |
432 | { | |
433 | struct ipheth_device *dev = netdev_priv(net); | |
434 | ||
495f71e2 | 435 | dev_err(&dev->intf->dev, "%s: TX timeout\n", __func__); |
a19259c3 DG |
436 | dev->net->stats.tx_errors++; |
437 | usb_unlink_urb(dev->tx_urb); | |
438 | } | |
439 | ||
a19259c3 DG |
440 | static u32 ipheth_ethtool_op_get_link(struct net_device *net) |
441 | { | |
442 | struct ipheth_device *dev = netdev_priv(net); | |
443 | return netif_carrier_ok(dev->net); | |
444 | } | |
445 | ||
bc689c97 | 446 | static const struct ethtool_ops ops = { |
a19259c3 DG |
447 | .get_link = ipheth_ethtool_op_get_link |
448 | }; | |
449 | ||
450 | static const struct net_device_ops ipheth_netdev_ops = { | |
8ef207d6 | 451 | .ndo_open = ipheth_open, |
452 | .ndo_stop = ipheth_close, | |
453 | .ndo_start_xmit = ipheth_tx, | |
454 | .ndo_tx_timeout = ipheth_tx_timeout, | |
a19259c3 DG |
455 | }; |
456 | ||
a19259c3 DG |
457 | static int ipheth_probe(struct usb_interface *intf, |
458 | const struct usb_device_id *id) | |
459 | { | |
460 | struct usb_device *udev = interface_to_usbdev(intf); | |
461 | struct usb_host_interface *hintf; | |
462 | struct usb_endpoint_descriptor *endp; | |
463 | struct ipheth_device *dev; | |
464 | struct net_device *netdev; | |
465 | int i; | |
466 | int retval; | |
467 | ||
468 | netdev = alloc_etherdev(sizeof(struct ipheth_device)); | |
469 | if (!netdev) | |
470 | return -ENOMEM; | |
471 | ||
472 | netdev->netdev_ops = &ipheth_netdev_ops; | |
473 | netdev->watchdog_timeo = IPHETH_TX_TIMEOUT; | |
c9cedbba | 474 | strcpy(netdev->name, "eth%d"); |
a19259c3 DG |
475 | |
476 | dev = netdev_priv(netdev); | |
477 | dev->udev = udev; | |
478 | dev->net = netdev; | |
479 | dev->intf = intf; | |
480 | ||
481 | /* Set up endpoints */ | |
482 | hintf = usb_altnum_to_altsetting(intf, IPHETH_ALT_INTFNUM); | |
483 | if (hintf == NULL) { | |
484 | retval = -ENODEV; | |
495f71e2 | 485 | dev_err(&intf->dev, "Unable to find alternate settings interface\n"); |
a19259c3 DG |
486 | goto err_endpoints; |
487 | } | |
488 | ||
489 | for (i = 0; i < hintf->desc.bNumEndpoints; i++) { | |
490 | endp = &hintf->endpoint[i].desc; | |
491 | if (usb_endpoint_is_bulk_in(endp)) | |
492 | dev->bulk_in = endp->bEndpointAddress; | |
493 | else if (usb_endpoint_is_bulk_out(endp)) | |
494 | dev->bulk_out = endp->bEndpointAddress; | |
495 | } | |
496 | if (!(dev->bulk_in && dev->bulk_out)) { | |
497 | retval = -ENODEV; | |
495f71e2 | 498 | dev_err(&intf->dev, "Unable to find endpoints\n"); |
a19259c3 DG |
499 | goto err_endpoints; |
500 | } | |
501 | ||
502 | dev->ctrl_buf = kmalloc(IPHETH_CTRL_BUF_SIZE, GFP_KERNEL); | |
503 | if (dev->ctrl_buf == NULL) { | |
504 | retval = -ENOMEM; | |
505 | goto err_alloc_ctrl_buf; | |
506 | } | |
507 | ||
508 | retval = ipheth_get_macaddr(dev); | |
509 | if (retval) | |
510 | goto err_get_macaddr; | |
511 | ||
512 | INIT_DELAYED_WORK(&dev->carrier_work, ipheth_carrier_check_work); | |
513 | ||
514 | retval = ipheth_alloc_urbs(dev); | |
515 | if (retval) { | |
495f71e2 | 516 | dev_err(&intf->dev, "error allocating urbs: %d\n", retval); |
a19259c3 DG |
517 | goto err_alloc_urbs; |
518 | } | |
519 | ||
520 | usb_set_intfdata(intf, dev); | |
521 | ||
522 | SET_NETDEV_DEV(netdev, &intf->dev); | |
523 | SET_ETHTOOL_OPS(netdev, &ops); | |
a19259c3 DG |
524 | |
525 | retval = register_netdev(netdev); | |
526 | if (retval) { | |
495f71e2 | 527 | dev_err(&intf->dev, "error registering netdev: %d\n", retval); |
a19259c3 DG |
528 | retval = -EIO; |
529 | goto err_register_netdev; | |
530 | } | |
531 | ||
532 | dev_info(&intf->dev, "Apple iPhone USB Ethernet device attached\n"); | |
533 | return 0; | |
534 | ||
535 | err_register_netdev: | |
536 | ipheth_free_urbs(dev); | |
537 | err_alloc_urbs: | |
538 | err_get_macaddr: | |
539 | err_alloc_ctrl_buf: | |
540 | kfree(dev->ctrl_buf); | |
541 | err_endpoints: | |
542 | free_netdev(netdev); | |
543 | return retval; | |
544 | } | |
545 | ||
546 | static void ipheth_disconnect(struct usb_interface *intf) | |
547 | { | |
548 | struct ipheth_device *dev; | |
549 | ||
550 | dev = usb_get_intfdata(intf); | |
551 | if (dev != NULL) { | |
552 | unregister_netdev(dev->net); | |
553 | ipheth_kill_urbs(dev); | |
554 | ipheth_free_urbs(dev); | |
555 | kfree(dev->ctrl_buf); | |
556 | free_netdev(dev->net); | |
557 | } | |
558 | usb_set_intfdata(intf, NULL); | |
559 | dev_info(&intf->dev, "Apple iPhone USB Ethernet now disconnected\n"); | |
560 | } | |
561 | ||
562 | static struct usb_driver ipheth_driver = { | |
563 | .name = "ipheth", | |
564 | .probe = ipheth_probe, | |
565 | .disconnect = ipheth_disconnect, | |
566 | .id_table = ipheth_table, | |
e1f12eb6 | 567 | .disable_hub_initiated_lpm = 1, |
a19259c3 DG |
568 | }; |
569 | ||
d632eb1b | 570 | module_usb_driver(ipheth_driver); |
a19259c3 DG |
571 | |
572 | MODULE_AUTHOR("Diego Giagio <diego@giagio.com>"); | |
573 | MODULE_DESCRIPTION("Apple iPhone USB Ethernet driver"); | |
574 | MODULE_LICENSE("Dual BSD/GPL"); |