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1da177e4 LT |
1 | /**************************************************************** |
2 | * | |
3 | * kaweth.c - driver for KL5KUSB101 based USB->Ethernet | |
4 | * | |
5 | * (c) 2000 Interlan Communications | |
6 | * (c) 2000 Stephane Alnet | |
7 | * (C) 2001 Brad Hards | |
8 | * (C) 2002 Oliver Neukum | |
9 | * | |
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. | |
16 | * | |
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. | |
21 | * | |
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. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License | |
9cb00073 | 28 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
1da177e4 LT |
29 | * |
30 | ****************************************************************/ | |
31 | ||
32 | /* TODO: | |
1da177e4 LT |
33 | * Develop test procedures for USB net interfaces |
34 | * Run test procedures | |
35 | * Fix bugs from previous two steps | |
36 | * Snoop other OSs for any tricks we're not doing | |
1da177e4 LT |
37 | * Reduce arbitrary timeouts |
38 | * Smart multicast support | |
39 | * Temporary MAC change support | |
40 | * Tunable SOFs parameter - ioctl()? | |
41 | * Ethernet stats collection | |
42 | * Code formatting improvements | |
43 | */ | |
44 | ||
45 | #include <linux/module.h> | |
1da177e4 LT |
46 | #include <linux/slab.h> |
47 | #include <linux/string.h> | |
1da177e4 LT |
48 | #include <linux/delay.h> |
49 | #include <linux/netdevice.h> | |
50 | #include <linux/etherdevice.h> | |
51 | #include <linux/usb.h> | |
52 | #include <linux/types.h> | |
53 | #include <linux/ethtool.h> | |
1da177e4 LT |
54 | #include <linux/dma-mapping.h> |
55 | #include <linux/wait.h> | |
79682499 | 56 | #include <linux/firmware.h> |
1da177e4 | 57 | #include <asm/uaccess.h> |
1da177e4 LT |
58 | #include <asm/byteorder.h> |
59 | ||
60 | #undef DEBUG | |
61 | ||
1da177e4 LT |
62 | #define KAWETH_MTU 1514 |
63 | #define KAWETH_BUF_SIZE 1664 | |
64 | #define KAWETH_TX_TIMEOUT (5 * HZ) | |
65 | #define KAWETH_SCRATCH_SIZE 32 | |
66 | #define KAWETH_FIRMWARE_BUF_SIZE 4096 | |
2b2b2e35 | 67 | #define KAWETH_CONTROL_TIMEOUT (30000) |
1da177e4 LT |
68 | |
69 | #define KAWETH_STATUS_BROKEN 0x0000001 | |
70 | #define KAWETH_STATUS_CLOSING 0x0000002 | |
1a2ea1df ON |
71 | #define KAWETH_STATUS_SUSPENDING 0x0000004 |
72 | ||
73 | #define KAWETH_STATUS_BLOCKED (KAWETH_STATUS_CLOSING | KAWETH_STATUS_SUSPENDING) | |
1da177e4 LT |
74 | |
75 | #define KAWETH_PACKET_FILTER_PROMISCUOUS 0x01 | |
76 | #define KAWETH_PACKET_FILTER_ALL_MULTICAST 0x02 | |
77 | #define KAWETH_PACKET_FILTER_DIRECTED 0x04 | |
78 | #define KAWETH_PACKET_FILTER_BROADCAST 0x08 | |
79 | #define KAWETH_PACKET_FILTER_MULTICAST 0x10 | |
80 | ||
81 | /* Table 7 */ | |
82 | #define KAWETH_COMMAND_GET_ETHERNET_DESC 0x00 | |
83 | #define KAWETH_COMMAND_MULTICAST_FILTERS 0x01 | |
84 | #define KAWETH_COMMAND_SET_PACKET_FILTER 0x02 | |
85 | #define KAWETH_COMMAND_STATISTICS 0x03 | |
86 | #define KAWETH_COMMAND_SET_TEMP_MAC 0x06 | |
87 | #define KAWETH_COMMAND_GET_TEMP_MAC 0x07 | |
88 | #define KAWETH_COMMAND_SET_URB_SIZE 0x08 | |
89 | #define KAWETH_COMMAND_SET_SOFS_WAIT 0x09 | |
90 | #define KAWETH_COMMAND_SCAN 0xFF | |
91 | ||
92 | #define KAWETH_SOFS_TO_WAIT 0x05 | |
93 | ||
94 | #define INTBUFFERSIZE 4 | |
95 | ||
96 | #define STATE_OFFSET 0 | |
97 | #define STATE_MASK 0x40 | |
98 | #define STATE_SHIFT 5 | |
99 | ||
1a2ea1df ON |
100 | #define IS_BLOCKED(s) (s & KAWETH_STATUS_BLOCKED) |
101 | ||
1da177e4 LT |
102 | |
103 | 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>"); | |
104 | MODULE_DESCRIPTION("KL5USB101 USB Ethernet driver"); | |
105 | MODULE_LICENSE("GPL"); | |
79682499 DW |
106 | MODULE_FIRMWARE("kaweth/new_code.bin"); |
107 | MODULE_FIRMWARE("kaweth/new_code_fix.bin"); | |
108 | MODULE_FIRMWARE("kaweth/trigger_code.bin"); | |
109 | MODULE_FIRMWARE("kaweth/trigger_code_fix.bin"); | |
1da177e4 LT |
110 | |
111 | static const char driver_name[] = "kaweth"; | |
112 | ||
113 | static int kaweth_probe( | |
114 | struct usb_interface *intf, | |
115 | const struct usb_device_id *id /* from id_table */ | |
116 | ); | |
117 | static void kaweth_disconnect(struct usb_interface *intf); | |
118 | static int kaweth_internal_control_msg(struct usb_device *usb_dev, | |
119 | unsigned int pipe, | |
120 | struct usb_ctrlrequest *cmd, void *data, | |
121 | int len, int timeout); | |
1a2ea1df ON |
122 | static int kaweth_suspend(struct usb_interface *intf, pm_message_t message); |
123 | static int kaweth_resume(struct usb_interface *intf); | |
1da177e4 LT |
124 | |
125 | /**************************************************************** | |
126 | * usb_device_id | |
127 | ****************************************************************/ | |
128 | static struct usb_device_id usb_klsi_table[] = { | |
129 | { USB_DEVICE(0x03e8, 0x0008) }, /* AOX Endpoints USB Ethernet */ | |
130 | { USB_DEVICE(0x04bb, 0x0901) }, /* I-O DATA USB-ET/T */ | |
131 | { USB_DEVICE(0x0506, 0x03e8) }, /* 3Com 3C19250 */ | |
132 | { USB_DEVICE(0x0506, 0x11f8) }, /* 3Com 3C460 */ | |
133 | { USB_DEVICE(0x0557, 0x2002) }, /* ATEN USB Ethernet */ | |
134 | { USB_DEVICE(0x0557, 0x4000) }, /* D-Link DSB-650C */ | |
135 | { USB_DEVICE(0x0565, 0x0002) }, /* Peracom Enet */ | |
136 | { USB_DEVICE(0x0565, 0x0003) }, /* Optus@Home UEP1045A */ | |
137 | { USB_DEVICE(0x0565, 0x0005) }, /* Peracom Enet2 */ | |
138 | { USB_DEVICE(0x05e9, 0x0008) }, /* KLSI KL5KUSB101B */ | |
139 | { USB_DEVICE(0x05e9, 0x0009) }, /* KLSI KL5KUSB101B (Board change) */ | |
140 | { USB_DEVICE(0x066b, 0x2202) }, /* Linksys USB10T */ | |
141 | { USB_DEVICE(0x06e1, 0x0008) }, /* ADS USB-10BT */ | |
142 | { USB_DEVICE(0x06e1, 0x0009) }, /* ADS USB-10BT */ | |
143 | { USB_DEVICE(0x0707, 0x0100) }, /* SMC 2202USB */ | |
144 | { USB_DEVICE(0x07aa, 0x0001) }, /* Correga K.K. */ | |
145 | { USB_DEVICE(0x07b8, 0x4000) }, /* D-Link DU-E10 */ | |
dacf4fc8 | 146 | { USB_DEVICE(0x07c9, 0xb010) }, /* Allied Telesyn AT-USB10 USB Ethernet Adapter */ |
1da177e4 LT |
147 | { USB_DEVICE(0x0846, 0x1001) }, /* NetGear EA-101 */ |
148 | { USB_DEVICE(0x0846, 0x1002) }, /* NetGear EA-101 */ | |
149 | { USB_DEVICE(0x085a, 0x0008) }, /* PortGear Ethernet Adapter */ | |
150 | { USB_DEVICE(0x085a, 0x0009) }, /* PortGear Ethernet Adapter */ | |
151 | { USB_DEVICE(0x087d, 0x5704) }, /* Jaton USB Ethernet Device Adapter */ | |
152 | { USB_DEVICE(0x0951, 0x0008) }, /* Kingston Technology USB Ethernet Adapter */ | |
153 | { USB_DEVICE(0x095a, 0x3003) }, /* Portsmith Express Ethernet Adapter */ | |
154 | { USB_DEVICE(0x10bd, 0x1427) }, /* ASANTE USB To Ethernet Adapter */ | |
155 | { USB_DEVICE(0x1342, 0x0204) }, /* Mobility USB-Ethernet Adapter */ | |
156 | { USB_DEVICE(0x13d2, 0x0400) }, /* Shark Pocket Adapter */ | |
157 | { USB_DEVICE(0x1485, 0x0001) }, /* Silicom U2E */ | |
158 | { USB_DEVICE(0x1485, 0x0002) }, /* Psion Dacom Gold Port Ethernet */ | |
159 | { USB_DEVICE(0x1645, 0x0005) }, /* Entrega E45 */ | |
160 | { USB_DEVICE(0x1645, 0x0008) }, /* Entrega USB Ethernet Adapter */ | |
161 | { USB_DEVICE(0x1645, 0x8005) }, /* PortGear Ethernet Adapter */ | |
486ba2a9 | 162 | { USB_DEVICE(0x1668, 0x0323) }, /* Actiontec USB Ethernet */ |
1da177e4 LT |
163 | { USB_DEVICE(0x2001, 0x4000) }, /* D-link DSB-650C */ |
164 | {} /* Null terminator */ | |
165 | }; | |
166 | ||
167 | MODULE_DEVICE_TABLE (usb, usb_klsi_table); | |
168 | ||
169 | /**************************************************************** | |
170 | * kaweth_driver | |
171 | ****************************************************************/ | |
172 | static struct usb_driver kaweth_driver = { | |
1da177e4 LT |
173 | .name = driver_name, |
174 | .probe = kaweth_probe, | |
175 | .disconnect = kaweth_disconnect, | |
1a2ea1df ON |
176 | .suspend = kaweth_suspend, |
177 | .resume = kaweth_resume, | |
1da177e4 | 178 | .id_table = usb_klsi_table, |
b98b98f9 | 179 | .supports_autosuspend = 1, |
e1f12eb6 | 180 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
181 | }; |
182 | ||
183 | typedef __u8 eth_addr_t[6]; | |
184 | ||
185 | /**************************************************************** | |
186 | * usb_eth_dev | |
187 | ****************************************************************/ | |
188 | struct usb_eth_dev { | |
189 | char *name; | |
190 | __u16 vendor; | |
191 | __u16 device; | |
192 | void *pdata; | |
193 | }; | |
194 | ||
195 | /**************************************************************** | |
196 | * kaweth_ethernet_configuration | |
197 | * Refer Table 8 | |
198 | ****************************************************************/ | |
199 | struct kaweth_ethernet_configuration | |
200 | { | |
201 | __u8 size; | |
202 | __u8 reserved1; | |
203 | __u8 reserved2; | |
204 | eth_addr_t hw_addr; | |
205 | __u32 statistics_mask; | |
206 | __le16 segment_size; | |
207 | __u16 max_multicast_filters; | |
208 | __u8 reserved3; | |
ba2d3587 | 209 | } __packed; |
1da177e4 LT |
210 | |
211 | /**************************************************************** | |
212 | * kaweth_device | |
213 | ****************************************************************/ | |
214 | struct kaweth_device | |
215 | { | |
216 | spinlock_t device_lock; | |
217 | ||
218 | __u32 status; | |
219 | int end; | |
1da177e4 LT |
220 | int suspend_lowmem_rx; |
221 | int suspend_lowmem_ctrl; | |
222 | int linkstate; | |
1a2ea1df | 223 | int opened; |
c4028958 | 224 | struct delayed_work lowmem_work; |
1da177e4 LT |
225 | |
226 | struct usb_device *dev; | |
b98b98f9 | 227 | struct usb_interface *intf; |
1da177e4 LT |
228 | struct net_device *net; |
229 | wait_queue_head_t term_wait; | |
230 | ||
231 | struct urb *rx_urb; | |
232 | struct urb *tx_urb; | |
233 | struct urb *irq_urb; | |
234 | ||
235 | dma_addr_t intbufferhandle; | |
236 | __u8 *intbuffer; | |
237 | dma_addr_t rxbufferhandle; | |
238 | __u8 *rx_buf; | |
239 | ||
240 | ||
241 | struct sk_buff *tx_skb; | |
242 | ||
243 | __u8 *firmware_buf; | |
244 | __u8 scratch[KAWETH_SCRATCH_SIZE]; | |
245 | __u16 packet_filter_bitmap; | |
246 | ||
247 | struct kaweth_ethernet_configuration configuration; | |
248 | ||
249 | struct net_device_stats stats; | |
250 | }; | |
251 | ||
1da177e4 LT |
252 | /**************************************************************** |
253 | * kaweth_control | |
254 | ****************************************************************/ | |
255 | static int kaweth_control(struct kaweth_device *kaweth, | |
256 | unsigned int pipe, | |
257 | __u8 request, | |
258 | __u8 requesttype, | |
259 | __u16 value, | |
260 | __u16 index, | |
261 | void *data, | |
262 | __u16 size, | |
263 | int timeout) | |
264 | { | |
265 | struct usb_ctrlrequest *dr; | |
051b982b | 266 | int retval; |
1da177e4 | 267 | |
49ae25b0 | 268 | netdev_dbg(kaweth->net, "kaweth_control()\n"); |
1da177e4 LT |
269 | |
270 | if(in_interrupt()) { | |
49ae25b0 | 271 | netdev_dbg(kaweth->net, "in_interrupt()\n"); |
1da177e4 LT |
272 | return -EBUSY; |
273 | } | |
274 | ||
275 | dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC); | |
49ae25b0 | 276 | if (!dr) |
1da177e4 | 277 | return -ENOMEM; |
1da177e4 | 278 | |
051b982b | 279 | dr->bRequestType = requesttype; |
1da177e4 | 280 | dr->bRequest = request; |
da2bbdcc HH |
281 | dr->wValue = cpu_to_le16(value); |
282 | dr->wIndex = cpu_to_le16(index); | |
283 | dr->wLength = cpu_to_le16(size); | |
1da177e4 | 284 | |
051b982b KC |
285 | retval = kaweth_internal_control_msg(kaweth->dev, |
286 | pipe, | |
287 | dr, | |
288 | data, | |
289 | size, | |
290 | timeout); | |
291 | ||
292 | kfree(dr); | |
293 | return retval; | |
1da177e4 LT |
294 | } |
295 | ||
296 | /**************************************************************** | |
297 | * kaweth_read_configuration | |
298 | ****************************************************************/ | |
299 | static int kaweth_read_configuration(struct kaweth_device *kaweth) | |
300 | { | |
301 | int retval; | |
302 | ||
49ae25b0 | 303 | netdev_dbg(kaweth->net, "Reading kaweth configuration\n"); |
1da177e4 LT |
304 | |
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, | |
309 | 0, | |
310 | 0, | |
311 | (void *)&kaweth->configuration, | |
312 | sizeof(kaweth->configuration), | |
313 | KAWETH_CONTROL_TIMEOUT); | |
314 | ||
315 | return retval; | |
316 | } | |
317 | ||
318 | /**************************************************************** | |
319 | * kaweth_set_urb_size | |
320 | ****************************************************************/ | |
321 | static int kaweth_set_urb_size(struct kaweth_device *kaweth, __u16 urb_size) | |
322 | { | |
323 | int retval; | |
324 | ||
49ae25b0 | 325 | netdev_dbg(kaweth->net, "Setting URB size to %d\n", (unsigned)urb_size); |
1da177e4 LT |
326 | |
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, | |
331 | urb_size, | |
332 | 0, | |
333 | (void *)&kaweth->scratch, | |
334 | 0, | |
335 | KAWETH_CONTROL_TIMEOUT); | |
336 | ||
337 | return retval; | |
338 | } | |
339 | ||
340 | /**************************************************************** | |
341 | * kaweth_set_sofs_wait | |
342 | ****************************************************************/ | |
343 | static int kaweth_set_sofs_wait(struct kaweth_device *kaweth, __u16 sofs_wait) | |
344 | { | |
345 | int retval; | |
346 | ||
49ae25b0 | 347 | netdev_dbg(kaweth->net, "Set SOFS wait to %d\n", (unsigned)sofs_wait); |
1da177e4 LT |
348 | |
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, | |
353 | sofs_wait, | |
354 | 0, | |
355 | (void *)&kaweth->scratch, | |
356 | 0, | |
357 | KAWETH_CONTROL_TIMEOUT); | |
358 | ||
359 | return retval; | |
360 | } | |
361 | ||
362 | /**************************************************************** | |
363 | * kaweth_set_receive_filter | |
364 | ****************************************************************/ | |
365 | static int kaweth_set_receive_filter(struct kaweth_device *kaweth, | |
366 | __u16 receive_filter) | |
367 | { | |
368 | int retval; | |
369 | ||
49ae25b0 GKH |
370 | netdev_dbg(kaweth->net, "Set receive filter to %d\n", |
371 | (unsigned)receive_filter); | |
1da177e4 LT |
372 | |
373 | retval = kaweth_control(kaweth, | |
374 | usb_sndctrlpipe(kaweth->dev, 0), | |
375 | KAWETH_COMMAND_SET_PACKET_FILTER, | |
376 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, | |
377 | receive_filter, | |
378 | 0, | |
379 | (void *)&kaweth->scratch, | |
380 | 0, | |
381 | KAWETH_CONTROL_TIMEOUT); | |
382 | ||
383 | return retval; | |
384 | } | |
385 | ||
386 | /**************************************************************** | |
387 | * kaweth_download_firmware | |
388 | ****************************************************************/ | |
389 | static int kaweth_download_firmware(struct kaweth_device *kaweth, | |
79682499 | 390 | const char *fwname, |
1da177e4 LT |
391 | __u8 interrupt, |
392 | __u8 type) | |
393 | { | |
79682499 DW |
394 | const struct firmware *fw; |
395 | int data_len; | |
396 | int ret; | |
397 | ||
398 | ret = request_firmware(&fw, fwname, &kaweth->dev->dev); | |
399 | if (ret) { | |
db6b2219 | 400 | dev_err(&kaweth->intf->dev, "Firmware request failed\n"); |
79682499 DW |
401 | return ret; |
402 | } | |
403 | ||
404 | if (fw->size > KAWETH_FIRMWARE_BUF_SIZE) { | |
db6b2219 GKH |
405 | dev_err(&kaweth->intf->dev, "Firmware too big: %zu\n", |
406 | fw->size); | |
986e3f6e | 407 | release_firmware(fw); |
1da177e4 LT |
408 | return -ENOSPC; |
409 | } | |
79682499 DW |
410 | data_len = fw->size; |
411 | memcpy(kaweth->firmware_buf, fw->data, fw->size); | |
1da177e4 | 412 | |
79682499 | 413 | release_firmware(fw); |
1da177e4 LT |
414 | |
415 | kaweth->firmware_buf[2] = (data_len & 0xFF) - 7; | |
416 | kaweth->firmware_buf[3] = data_len >> 8; | |
417 | kaweth->firmware_buf[4] = type; | |
418 | kaweth->firmware_buf[5] = interrupt; | |
419 | ||
49ae25b0 | 420 | netdev_dbg(kaweth->net, "High: %i, Low:%i\n", kaweth->firmware_buf[3], |
1da177e4 LT |
421 | kaweth->firmware_buf[2]); |
422 | ||
49ae25b0 GKH |
423 | netdev_dbg(kaweth->net, |
424 | "Downloading firmware at %p to kaweth device at %p\n", | |
0abc1cee | 425 | kaweth->firmware_buf, kaweth); |
49ae25b0 | 426 | netdev_dbg(kaweth->net, "Firmware length: %d\n", data_len); |
1da177e4 LT |
427 | |
428 | return kaweth_control(kaweth, | |
429 | usb_sndctrlpipe(kaweth->dev, 0), | |
430 | KAWETH_COMMAND_SCAN, | |
431 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, | |
432 | 0, | |
433 | 0, | |
434 | (void *)kaweth->firmware_buf, | |
435 | data_len, | |
436 | KAWETH_CONTROL_TIMEOUT); | |
437 | } | |
438 | ||
439 | /**************************************************************** | |
440 | * kaweth_trigger_firmware | |
441 | ****************************************************************/ | |
442 | static int kaweth_trigger_firmware(struct kaweth_device *kaweth, | |
443 | __u8 interrupt) | |
444 | { | |
445 | kaweth->firmware_buf[0] = 0xB6; | |
446 | kaweth->firmware_buf[1] = 0xC3; | |
447 | kaweth->firmware_buf[2] = 0x01; | |
448 | kaweth->firmware_buf[3] = 0x00; | |
449 | kaweth->firmware_buf[4] = 0x06; | |
450 | kaweth->firmware_buf[5] = interrupt; | |
451 | kaweth->firmware_buf[6] = 0x00; | |
452 | kaweth->firmware_buf[7] = 0x00; | |
453 | ||
49ae25b0 | 454 | netdev_dbg(kaweth->net, "Triggering firmware\n"); |
1da177e4 LT |
455 | |
456 | return kaweth_control(kaweth, | |
457 | usb_sndctrlpipe(kaweth->dev, 0), | |
458 | KAWETH_COMMAND_SCAN, | |
459 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, | |
460 | 0, | |
461 | 0, | |
462 | (void *)kaweth->firmware_buf, | |
463 | 8, | |
464 | KAWETH_CONTROL_TIMEOUT); | |
465 | } | |
466 | ||
467 | /**************************************************************** | |
468 | * kaweth_reset | |
469 | ****************************************************************/ | |
470 | static int kaweth_reset(struct kaweth_device *kaweth) | |
471 | { | |
472 | int result; | |
473 | ||
49ae25b0 | 474 | netdev_dbg(kaweth->net, "kaweth_reset(%p)\n", kaweth); |
f0816ce3 | 475 | result = usb_reset_configuration(kaweth->dev); |
f2d45cd9 | 476 | mdelay(10); |
1da177e4 | 477 | |
49ae25b0 | 478 | netdev_dbg(kaweth->net, "kaweth_reset() returns %d.\n", result); |
1da177e4 LT |
479 | |
480 | return result; | |
481 | } | |
482 | ||
7d12e780 | 483 | static void kaweth_usb_receive(struct urb *); |
55016f10 | 484 | static int kaweth_resubmit_rx_urb(struct kaweth_device *, gfp_t); |
1da177e4 LT |
485 | |
486 | /**************************************************************** | |
487 | int_callback | |
488 | *****************************************************************/ | |
489 | ||
55016f10 | 490 | static void kaweth_resubmit_int_urb(struct kaweth_device *kaweth, gfp_t mf) |
1da177e4 LT |
491 | { |
492 | int status; | |
493 | ||
494 | status = usb_submit_urb (kaweth->irq_urb, mf); | |
495 | if (unlikely(status == -ENOMEM)) { | |
496 | kaweth->suspend_lowmem_ctrl = 1; | |
497 | schedule_delayed_work(&kaweth->lowmem_work, HZ/4); | |
498 | } else { | |
499 | kaweth->suspend_lowmem_ctrl = 0; | |
500 | } | |
501 | ||
502 | if (status) | |
db6b2219 GKH |
503 | dev_err(&kaweth->intf->dev, |
504 | "can't resubmit intr, %s-%s, status %d\n", | |
505 | kaweth->dev->bus->bus_name, | |
506 | kaweth->dev->devpath, status); | |
1da177e4 LT |
507 | } |
508 | ||
7d12e780 | 509 | static void int_callback(struct urb *u) |
1da177e4 LT |
510 | { |
511 | struct kaweth_device *kaweth = u->context; | |
512 | int act_state; | |
c94cb314 | 513 | int status = u->status; |
1da177e4 | 514 | |
c94cb314 | 515 | switch (status) { |
1da177e4 LT |
516 | case 0: /* success */ |
517 | break; | |
518 | case -ECONNRESET: /* unlink */ | |
519 | case -ENOENT: | |
520 | case -ESHUTDOWN: | |
521 | return; | |
522 | /* -EPIPE: should clear the halt */ | |
523 | default: /* error */ | |
524 | goto resubmit; | |
525 | } | |
526 | ||
527 | /* we check the link state to report changes */ | |
528 | if (kaweth->linkstate != (act_state = ( kaweth->intbuffer[STATE_OFFSET] | STATE_MASK) >> STATE_SHIFT)) { | |
58125f95 | 529 | if (act_state) |
1da177e4 LT |
530 | netif_carrier_on(kaweth->net); |
531 | else | |
532 | netif_carrier_off(kaweth->net); | |
533 | ||
534 | kaweth->linkstate = act_state; | |
535 | } | |
536 | resubmit: | |
537 | kaweth_resubmit_int_urb(kaweth, GFP_ATOMIC); | |
538 | } | |
539 | ||
c4028958 | 540 | static void kaweth_resubmit_tl(struct work_struct *work) |
1da177e4 | 541 | { |
c4028958 DH |
542 | struct kaweth_device *kaweth = |
543 | container_of(work, struct kaweth_device, lowmem_work.work); | |
1da177e4 | 544 | |
1a2ea1df | 545 | if (IS_BLOCKED(kaweth->status)) |
1da177e4 LT |
546 | return; |
547 | ||
548 | if (kaweth->suspend_lowmem_rx) | |
549 | kaweth_resubmit_rx_urb(kaweth, GFP_NOIO); | |
550 | ||
551 | if (kaweth->suspend_lowmem_ctrl) | |
552 | kaweth_resubmit_int_urb(kaweth, GFP_NOIO); | |
553 | } | |
554 | ||
555 | ||
556 | /**************************************************************** | |
557 | * kaweth_resubmit_rx_urb | |
558 | ****************************************************************/ | |
559 | static int kaweth_resubmit_rx_urb(struct kaweth_device *kaweth, | |
55016f10 | 560 | gfp_t mem_flags) |
1da177e4 LT |
561 | { |
562 | int result; | |
563 | ||
564 | usb_fill_bulk_urb(kaweth->rx_urb, | |
565 | kaweth->dev, | |
566 | usb_rcvbulkpipe(kaweth->dev, 1), | |
567 | kaweth->rx_buf, | |
568 | KAWETH_BUF_SIZE, | |
569 | kaweth_usb_receive, | |
570 | kaweth); | |
571 | kaweth->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
572 | kaweth->rx_urb->transfer_dma = kaweth->rxbufferhandle; | |
573 | ||
574 | if((result = usb_submit_urb(kaweth->rx_urb, mem_flags))) { | |
575 | if (result == -ENOMEM) { | |
576 | kaweth->suspend_lowmem_rx = 1; | |
577 | schedule_delayed_work(&kaweth->lowmem_work, HZ/4); | |
578 | } | |
db6b2219 GKH |
579 | dev_err(&kaweth->intf->dev, "resubmitting rx_urb %d failed\n", |
580 | result); | |
1da177e4 LT |
581 | } else { |
582 | kaweth->suspend_lowmem_rx = 0; | |
583 | } | |
584 | ||
585 | return result; | |
586 | } | |
587 | ||
588 | static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth); | |
589 | ||
590 | /**************************************************************** | |
591 | * kaweth_usb_receive | |
592 | ****************************************************************/ | |
7d12e780 | 593 | static void kaweth_usb_receive(struct urb *urb) |
1da177e4 | 594 | { |
49ae25b0 | 595 | struct device *dev = &urb->dev->dev; |
1da177e4 LT |
596 | struct kaweth_device *kaweth = urb->context; |
597 | struct net_device *net = kaweth->net; | |
c94cb314 | 598 | int status = urb->status; |
1da177e4 LT |
599 | |
600 | int count = urb->actual_length; | |
601 | int count2 = urb->transfer_buffer_length; | |
602 | ||
603 | __u16 pkt_len = le16_to_cpup((__le16 *)kaweth->rx_buf); | |
604 | ||
605 | struct sk_buff *skb; | |
606 | ||
710b523a LF |
607 | if (unlikely(status == -EPIPE)) { |
608 | kaweth->stats.rx_errors++; | |
1da177e4 LT |
609 | kaweth->end = 1; |
610 | wake_up(&kaweth->term_wait); | |
49ae25b0 | 611 | dev_dbg(dev, "Status was -EPIPE.\n"); |
1da177e4 LT |
612 | return; |
613 | } | |
710b523a LF |
614 | if (unlikely(status == -ECONNRESET || status == -ESHUTDOWN)) { |
615 | /* we are killed - set a flag and wake the disconnect handler */ | |
616 | kaweth->end = 1; | |
617 | wake_up(&kaweth->term_wait); | |
49ae25b0 | 618 | dev_dbg(dev, "Status was -ECONNRESET or -ESHUTDOWN.\n"); |
710b523a LF |
619 | return; |
620 | } | |
621 | if (unlikely(status == -EPROTO || status == -ETIME || | |
622 | status == -EILSEQ)) { | |
623 | kaweth->stats.rx_errors++; | |
49ae25b0 | 624 | dev_dbg(dev, "Status was -EPROTO, -ETIME, or -EILSEQ.\n"); |
710b523a LF |
625 | return; |
626 | } | |
627 | if (unlikely(status == -EOVERFLOW)) { | |
628 | kaweth->stats.rx_errors++; | |
49ae25b0 | 629 | dev_dbg(dev, "Status was -EOVERFLOW.\n"); |
710b523a | 630 | } |
1a2ea1df ON |
631 | spin_lock(&kaweth->device_lock); |
632 | if (IS_BLOCKED(kaweth->status)) { | |
633 | spin_unlock(&kaweth->device_lock); | |
1da177e4 | 634 | return; |
1a2ea1df ON |
635 | } |
636 | spin_unlock(&kaweth->device_lock); | |
1da177e4 | 637 | |
c94cb314 | 638 | if(status && status != -EREMOTEIO && count != 1) { |
db6b2219 GKH |
639 | dev_err(&kaweth->intf->dev, |
640 | "%s RX status: %d count: %d packet_len: %d\n", | |
641 | net->name, status, count, (int)pkt_len); | |
1da177e4 LT |
642 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
643 | return; | |
644 | } | |
645 | ||
646 | if(kaweth->net && (count > 2)) { | |
647 | if(pkt_len > (count - 2)) { | |
db6b2219 GKH |
648 | dev_err(&kaweth->intf->dev, |
649 | "Packet length too long for USB frame (pkt_len: %x, count: %x)\n", | |
650 | pkt_len, count); | |
651 | dev_err(&kaweth->intf->dev, "Packet len & 2047: %x\n", | |
652 | pkt_len & 2047); | |
653 | dev_err(&kaweth->intf->dev, "Count 2: %x\n", count2); | |
1da177e4 LT |
654 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); |
655 | return; | |
656 | } | |
657 | ||
658 | if(!(skb = dev_alloc_skb(pkt_len+2))) { | |
659 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); | |
660 | return; | |
661 | } | |
662 | ||
663 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
664 | ||
8c7b7faa | 665 | skb_copy_to_linear_data(skb, kaweth->rx_buf + 2, pkt_len); |
1da177e4 LT |
666 | |
667 | skb_put(skb, pkt_len); | |
668 | ||
669 | skb->protocol = eth_type_trans(skb, net); | |
670 | ||
671 | netif_rx(skb); | |
672 | ||
673 | kaweth->stats.rx_packets++; | |
674 | kaweth->stats.rx_bytes += pkt_len; | |
675 | } | |
676 | ||
677 | kaweth_resubmit_rx_urb(kaweth, GFP_ATOMIC); | |
678 | } | |
679 | ||
680 | /**************************************************************** | |
681 | * kaweth_open | |
682 | ****************************************************************/ | |
683 | static int kaweth_open(struct net_device *net) | |
684 | { | |
685 | struct kaweth_device *kaweth = netdev_priv(net); | |
686 | int res; | |
687 | ||
49ae25b0 | 688 | netdev_dbg(kaweth->net, "Opening network device.\n"); |
1da177e4 | 689 | |
b98b98f9 ON |
690 | res = usb_autopm_get_interface(kaweth->intf); |
691 | if (res) { | |
db6b2219 | 692 | dev_err(&kaweth->intf->dev, "Interface cannot be resumed.\n"); |
b98b98f9 ON |
693 | return -EIO; |
694 | } | |
1da177e4 LT |
695 | res = kaweth_resubmit_rx_urb(kaweth, GFP_KERNEL); |
696 | if (res) | |
b98b98f9 | 697 | goto err_out; |
1da177e4 LT |
698 | |
699 | usb_fill_int_urb( | |
700 | kaweth->irq_urb, | |
701 | kaweth->dev, | |
702 | usb_rcvintpipe(kaweth->dev, 3), | |
703 | kaweth->intbuffer, | |
704 | INTBUFFERSIZE, | |
705 | int_callback, | |
706 | kaweth, | |
707 | 250); /* overriding the descriptor */ | |
708 | kaweth->irq_urb->transfer_dma = kaweth->intbufferhandle; | |
709 | kaweth->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
710 | ||
711 | res = usb_submit_urb(kaweth->irq_urb, GFP_KERNEL); | |
712 | if (res) { | |
713 | usb_kill_urb(kaweth->rx_urb); | |
b98b98f9 | 714 | goto err_out; |
1da177e4 | 715 | } |
1a2ea1df | 716 | kaweth->opened = 1; |
1da177e4 LT |
717 | |
718 | netif_start_queue(net); | |
719 | ||
720 | kaweth_async_set_rx_mode(kaweth); | |
721 | return 0; | |
b98b98f9 ON |
722 | |
723 | err_out: | |
ceb0c77e | 724 | usb_autopm_put_interface(kaweth->intf); |
b98b98f9 | 725 | return -EIO; |
1da177e4 LT |
726 | } |
727 | ||
728 | /**************************************************************** | |
b98b98f9 | 729 | * kaweth_kill_urbs |
1da177e4 | 730 | ****************************************************************/ |
1a2ea1df | 731 | static void kaweth_kill_urbs(struct kaweth_device *kaweth) |
1da177e4 | 732 | { |
1da177e4 LT |
733 | usb_kill_urb(kaweth->irq_urb); |
734 | usb_kill_urb(kaweth->rx_urb); | |
d23b536b | 735 | usb_kill_urb(kaweth->tx_urb); |
1da177e4 | 736 | |
4bb073c0 | 737 | cancel_delayed_work_sync(&kaweth->lowmem_work); |
1da177e4 LT |
738 | |
739 | /* a scheduled work may have resubmitted, | |
740 | we hit them again */ | |
741 | usb_kill_urb(kaweth->irq_urb); | |
742 | usb_kill_urb(kaweth->rx_urb); | |
1a2ea1df ON |
743 | } |
744 | ||
745 | /**************************************************************** | |
746 | * kaweth_close | |
747 | ****************************************************************/ | |
748 | static int kaweth_close(struct net_device *net) | |
749 | { | |
750 | struct kaweth_device *kaweth = netdev_priv(net); | |
751 | ||
752 | netif_stop_queue(net); | |
753 | kaweth->opened = 0; | |
754 | ||
755 | kaweth->status |= KAWETH_STATUS_CLOSING; | |
756 | ||
757 | kaweth_kill_urbs(kaweth); | |
1da177e4 LT |
758 | |
759 | kaweth->status &= ~KAWETH_STATUS_CLOSING; | |
760 | ||
ceb0c77e | 761 | usb_autopm_put_interface(kaweth->intf); |
b98b98f9 | 762 | |
1da177e4 LT |
763 | return 0; |
764 | } | |
765 | ||
b3ebd522 ON |
766 | static u32 kaweth_get_link(struct net_device *dev) |
767 | { | |
768 | struct kaweth_device *kaweth = netdev_priv(dev); | |
769 | ||
770 | return kaweth->linkstate; | |
1da177e4 LT |
771 | } |
772 | ||
0fc0b732 | 773 | static const struct ethtool_ops ops = { |
b3ebd522 | 774 | .get_link = kaweth_get_link |
1da177e4 LT |
775 | }; |
776 | ||
777 | /**************************************************************** | |
778 | * kaweth_usb_transmit_complete | |
779 | ****************************************************************/ | |
7d12e780 | 780 | static void kaweth_usb_transmit_complete(struct urb *urb) |
1da177e4 LT |
781 | { |
782 | struct kaweth_device *kaweth = urb->context; | |
783 | struct sk_buff *skb = kaweth->tx_skb; | |
c94cb314 | 784 | int status = urb->status; |
1da177e4 | 785 | |
c94cb314 ON |
786 | if (unlikely(status != 0)) |
787 | if (status != -ENOENT) | |
49ae25b0 GKH |
788 | dev_dbg(&urb->dev->dev, "%s: TX status %d.\n", |
789 | kaweth->net->name, status); | |
1da177e4 LT |
790 | |
791 | netif_wake_queue(kaweth->net); | |
792 | dev_kfree_skb_irq(skb); | |
793 | } | |
794 | ||
795 | /**************************************************************** | |
796 | * kaweth_start_xmit | |
797 | ****************************************************************/ | |
25a79c41 SH |
798 | static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb, |
799 | struct net_device *net) | |
1da177e4 LT |
800 | { |
801 | struct kaweth_device *kaweth = netdev_priv(net); | |
802 | __le16 *private_header; | |
803 | ||
804 | int res; | |
805 | ||
4ff61c8f | 806 | spin_lock_irq(&kaweth->device_lock); |
1da177e4 | 807 | |
1da177e4 LT |
808 | kaweth_async_set_rx_mode(kaweth); |
809 | netif_stop_queue(net); | |
1a2ea1df ON |
810 | if (IS_BLOCKED(kaweth->status)) { |
811 | goto skip; | |
812 | } | |
1da177e4 LT |
813 | |
814 | /* We now decide whether we can put our special header into the sk_buff */ | |
815 | if (skb_cloned(skb) || skb_headroom(skb) < 2) { | |
816 | /* no such luck - we make our own */ | |
817 | struct sk_buff *copied_skb; | |
818 | copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC); | |
819 | dev_kfree_skb_irq(skb); | |
820 | skb = copied_skb; | |
821 | if (!copied_skb) { | |
822 | kaweth->stats.tx_errors++; | |
823 | netif_start_queue(net); | |
4ff61c8f | 824 | spin_unlock_irq(&kaweth->device_lock); |
6ed10654 | 825 | return NETDEV_TX_OK; |
1da177e4 LT |
826 | } |
827 | } | |
828 | ||
829 | private_header = (__le16 *)__skb_push(skb, 2); | |
830 | *private_header = cpu_to_le16(skb->len-2); | |
831 | kaweth->tx_skb = skb; | |
832 | ||
833 | usb_fill_bulk_urb(kaweth->tx_urb, | |
834 | kaweth->dev, | |
835 | usb_sndbulkpipe(kaweth->dev, 2), | |
836 | private_header, | |
837 | skb->len, | |
838 | kaweth_usb_transmit_complete, | |
839 | kaweth); | |
840 | kaweth->end = 0; | |
1da177e4 LT |
841 | |
842 | if((res = usb_submit_urb(kaweth->tx_urb, GFP_ATOMIC))) | |
843 | { | |
4dc89948 | 844 | dev_warn(&net->dev, "kaweth failed tx_urb %d\n", res); |
1a2ea1df | 845 | skip: |
1da177e4 LT |
846 | kaweth->stats.tx_errors++; |
847 | ||
848 | netif_start_queue(net); | |
849 | dev_kfree_skb_irq(skb); | |
850 | } | |
851 | else | |
852 | { | |
853 | kaweth->stats.tx_packets++; | |
854 | kaweth->stats.tx_bytes += skb->len; | |
1da177e4 LT |
855 | } |
856 | ||
4ff61c8f | 857 | spin_unlock_irq(&kaweth->device_lock); |
1da177e4 | 858 | |
6ed10654 | 859 | return NETDEV_TX_OK; |
1da177e4 LT |
860 | } |
861 | ||
862 | /**************************************************************** | |
863 | * kaweth_set_rx_mode | |
864 | ****************************************************************/ | |
865 | static void kaweth_set_rx_mode(struct net_device *net) | |
866 | { | |
867 | struct kaweth_device *kaweth = netdev_priv(net); | |
868 | ||
869 | __u16 packet_filter_bitmap = KAWETH_PACKET_FILTER_DIRECTED | | |
870 | KAWETH_PACKET_FILTER_BROADCAST | | |
871 | KAWETH_PACKET_FILTER_MULTICAST; | |
872 | ||
49ae25b0 | 873 | netdev_dbg(net, "Setting Rx mode to %d\n", packet_filter_bitmap); |
1da177e4 LT |
874 | |
875 | netif_stop_queue(net); | |
876 | ||
877 | if (net->flags & IFF_PROMISC) { | |
878 | packet_filter_bitmap |= KAWETH_PACKET_FILTER_PROMISCUOUS; | |
879 | } | |
4cd24eaf | 880 | else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { |
1da177e4 LT |
881 | packet_filter_bitmap |= KAWETH_PACKET_FILTER_ALL_MULTICAST; |
882 | } | |
883 | ||
884 | kaweth->packet_filter_bitmap = packet_filter_bitmap; | |
885 | netif_wake_queue(net); | |
886 | } | |
887 | ||
888 | /**************************************************************** | |
889 | * kaweth_async_set_rx_mode | |
890 | ****************************************************************/ | |
891 | static void kaweth_async_set_rx_mode(struct kaweth_device *kaweth) | |
892 | { | |
710b523a | 893 | int result; |
1da177e4 | 894 | __u16 packet_filter_bitmap = kaweth->packet_filter_bitmap; |
710b523a | 895 | |
1da177e4 LT |
896 | kaweth->packet_filter_bitmap = 0; |
897 | if (packet_filter_bitmap == 0) | |
898 | return; | |
899 | ||
710b523a LF |
900 | if (in_interrupt()) |
901 | return; | |
902 | ||
1da177e4 LT |
903 | result = kaweth_control(kaweth, |
904 | usb_sndctrlpipe(kaweth->dev, 0), | |
905 | KAWETH_COMMAND_SET_PACKET_FILTER, | |
906 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, | |
907 | packet_filter_bitmap, | |
908 | 0, | |
909 | (void *)&kaweth->scratch, | |
910 | 0, | |
911 | KAWETH_CONTROL_TIMEOUT); | |
912 | ||
913 | if(result < 0) { | |
db6b2219 GKH |
914 | dev_err(&kaweth->intf->dev, "Failed to set Rx mode: %d\n", |
915 | result); | |
1da177e4 LT |
916 | } |
917 | else { | |
49ae25b0 GKH |
918 | netdev_dbg(kaweth->net, "Set Rx mode to %d\n", |
919 | packet_filter_bitmap); | |
1da177e4 | 920 | } |
1da177e4 LT |
921 | } |
922 | ||
923 | /**************************************************************** | |
924 | * kaweth_netdev_stats | |
925 | ****************************************************************/ | |
926 | static struct net_device_stats *kaweth_netdev_stats(struct net_device *dev) | |
927 | { | |
928 | struct kaweth_device *kaweth = netdev_priv(dev); | |
929 | return &kaweth->stats; | |
930 | } | |
931 | ||
932 | /**************************************************************** | |
933 | * kaweth_tx_timeout | |
934 | ****************************************************************/ | |
935 | static void kaweth_tx_timeout(struct net_device *net) | |
936 | { | |
937 | struct kaweth_device *kaweth = netdev_priv(net); | |
938 | ||
4dc89948 | 939 | dev_warn(&net->dev, "%s: Tx timed out. Resetting.\n", net->name); |
1da177e4 LT |
940 | kaweth->stats.tx_errors++; |
941 | net->trans_start = jiffies; | |
942 | ||
943 | usb_unlink_urb(kaweth->tx_urb); | |
944 | } | |
945 | ||
1a2ea1df ON |
946 | /**************************************************************** |
947 | * kaweth_suspend | |
948 | ****************************************************************/ | |
949 | static int kaweth_suspend(struct usb_interface *intf, pm_message_t message) | |
950 | { | |
951 | struct kaweth_device *kaweth = usb_get_intfdata(intf); | |
952 | unsigned long flags; | |
953 | ||
49ae25b0 | 954 | dev_dbg(&intf->dev, "Suspending device\n"); |
1a2ea1df ON |
955 | spin_lock_irqsave(&kaweth->device_lock, flags); |
956 | kaweth->status |= KAWETH_STATUS_SUSPENDING; | |
957 | spin_unlock_irqrestore(&kaweth->device_lock, flags); | |
958 | ||
959 | kaweth_kill_urbs(kaweth); | |
960 | return 0; | |
961 | } | |
962 | ||
963 | /**************************************************************** | |
964 | * kaweth_resume | |
965 | ****************************************************************/ | |
966 | static int kaweth_resume(struct usb_interface *intf) | |
967 | { | |
968 | struct kaweth_device *kaweth = usb_get_intfdata(intf); | |
969 | unsigned long flags; | |
970 | ||
49ae25b0 | 971 | dev_dbg(&intf->dev, "Resuming device\n"); |
1a2ea1df ON |
972 | spin_lock_irqsave(&kaweth->device_lock, flags); |
973 | kaweth->status &= ~KAWETH_STATUS_SUSPENDING; | |
974 | spin_unlock_irqrestore(&kaweth->device_lock, flags); | |
975 | ||
976 | if (!kaweth->opened) | |
977 | return 0; | |
978 | kaweth_resubmit_rx_urb(kaweth, GFP_NOIO); | |
979 | kaweth_resubmit_int_urb(kaweth, GFP_NOIO); | |
980 | ||
981 | return 0; | |
982 | } | |
983 | ||
1da177e4 LT |
984 | /**************************************************************** |
985 | * kaweth_probe | |
986 | ****************************************************************/ | |
321ea8b2 ON |
987 | |
988 | ||
989 | static const struct net_device_ops kaweth_netdev_ops = { | |
990 | .ndo_open = kaweth_open, | |
991 | .ndo_stop = kaweth_close, | |
992 | .ndo_start_xmit = kaweth_start_xmit, | |
993 | .ndo_tx_timeout = kaweth_tx_timeout, | |
afc4b13d | 994 | .ndo_set_rx_mode = kaweth_set_rx_mode, |
321ea8b2 | 995 | .ndo_get_stats = kaweth_netdev_stats, |
635ecaa7 | 996 | .ndo_change_mtu = eth_change_mtu, |
240c102d BH |
997 | .ndo_set_mac_address = eth_mac_addr, |
998 | .ndo_validate_addr = eth_validate_addr, | |
321ea8b2 ON |
999 | }; |
1000 | ||
1da177e4 LT |
1001 | static int kaweth_probe( |
1002 | struct usb_interface *intf, | |
1003 | const struct usb_device_id *id /* from id_table */ | |
1004 | ) | |
1005 | { | |
49ae25b0 GKH |
1006 | struct device *dev = &intf->dev; |
1007 | struct usb_device *udev = interface_to_usbdev(intf); | |
1da177e4 LT |
1008 | struct kaweth_device *kaweth; |
1009 | struct net_device *netdev; | |
1010 | const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; | |
1011 | int result = 0; | |
1012 | ||
49ae25b0 GKH |
1013 | dev_dbg(dev, |
1014 | "Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n", | |
1015 | udev->devnum, le16_to_cpu(udev->descriptor.idVendor), | |
1016 | le16_to_cpu(udev->descriptor.idProduct), | |
1017 | le16_to_cpu(udev->descriptor.bcdDevice)); | |
1da177e4 | 1018 | |
49ae25b0 | 1019 | dev_dbg(dev, "Device at %p\n", udev); |
1da177e4 | 1020 | |
49ae25b0 GKH |
1021 | dev_dbg(dev, "Descriptor length: %x type: %x\n", |
1022 | (int)udev->descriptor.bLength, | |
1023 | (int)udev->descriptor.bDescriptorType); | |
1da177e4 LT |
1024 | |
1025 | netdev = alloc_etherdev(sizeof(*kaweth)); | |
1026 | if (!netdev) | |
1027 | return -ENOMEM; | |
1028 | ||
1029 | kaweth = netdev_priv(netdev); | |
49ae25b0 | 1030 | kaweth->dev = udev; |
1da177e4 LT |
1031 | kaweth->net = netdev; |
1032 | ||
1033 | spin_lock_init(&kaweth->device_lock); | |
1034 | init_waitqueue_head(&kaweth->term_wait); | |
1035 | ||
49ae25b0 | 1036 | dev_dbg(dev, "Resetting.\n"); |
1da177e4 LT |
1037 | |
1038 | kaweth_reset(kaweth); | |
1039 | ||
1040 | /* | |
1041 | * If high byte of bcdDevice is nonzero, firmware is already | |
1042 | * downloaded. Don't try to do it again, or we'll hang the device. | |
1043 | */ | |
1044 | ||
49ae25b0 GKH |
1045 | if (le16_to_cpu(udev->descriptor.bcdDevice) >> 8) { |
1046 | dev_info(dev, "Firmware present in device.\n"); | |
1da177e4 LT |
1047 | } else { |
1048 | /* Download the firmware */ | |
49ae25b0 | 1049 | dev_info(dev, "Downloading firmware...\n"); |
1da177e4 LT |
1050 | kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL); |
1051 | if ((result = kaweth_download_firmware(kaweth, | |
79682499 | 1052 | "kaweth/new_code.bin", |
1da177e4 LT |
1053 | 100, |
1054 | 2)) < 0) { | |
49ae25b0 | 1055 | dev_err(dev, "Error downloading firmware (%d)\n", |
db6b2219 | 1056 | result); |
1da177e4 LT |
1057 | goto err_fw; |
1058 | } | |
1059 | ||
1060 | if ((result = kaweth_download_firmware(kaweth, | |
79682499 | 1061 | "kaweth/new_code_fix.bin", |
1da177e4 LT |
1062 | 100, |
1063 | 3)) < 0) { | |
49ae25b0 | 1064 | dev_err(dev, "Error downloading firmware fix (%d)\n", |
db6b2219 | 1065 | result); |
1da177e4 LT |
1066 | goto err_fw; |
1067 | } | |
1068 | ||
1069 | if ((result = kaweth_download_firmware(kaweth, | |
79682499 | 1070 | "kaweth/trigger_code.bin", |
1da177e4 LT |
1071 | 126, |
1072 | 2)) < 0) { | |
49ae25b0 | 1073 | dev_err(dev, "Error downloading trigger code (%d)\n", |
db6b2219 | 1074 | result); |
1da177e4 LT |
1075 | goto err_fw; |
1076 | ||
1077 | } | |
1078 | ||
1079 | if ((result = kaweth_download_firmware(kaweth, | |
79682499 | 1080 | "kaweth/trigger_code_fix.bin", |
1da177e4 LT |
1081 | 126, |
1082 | 3)) < 0) { | |
49ae25b0 | 1083 | dev_err(dev, "Error downloading trigger code fix (%d)\n", result); |
1da177e4 LT |
1084 | goto err_fw; |
1085 | } | |
1086 | ||
1087 | ||
1088 | if ((result = kaweth_trigger_firmware(kaweth, 126)) < 0) { | |
49ae25b0 | 1089 | dev_err(dev, "Error triggering firmware (%d)\n", result); |
1da177e4 LT |
1090 | goto err_fw; |
1091 | } | |
1092 | ||
1093 | /* Device will now disappear for a moment... */ | |
49ae25b0 | 1094 | dev_info(dev, "Firmware loaded. I'll be back...\n"); |
1da177e4 LT |
1095 | err_fw: |
1096 | free_page((unsigned long)kaweth->firmware_buf); | |
1097 | free_netdev(netdev); | |
1098 | return -EIO; | |
1099 | } | |
1100 | ||
1101 | result = kaweth_read_configuration(kaweth); | |
1102 | ||
1103 | if(result < 0) { | |
49ae25b0 | 1104 | dev_err(dev, "Error reading configuration (%d), no net device created\n", result); |
1da177e4 LT |
1105 | goto err_free_netdev; |
1106 | } | |
1107 | ||
49ae25b0 GKH |
1108 | dev_info(dev, "Statistics collection: %x\n", kaweth->configuration.statistics_mask); |
1109 | dev_info(dev, "Multicast filter limit: %x\n", kaweth->configuration.max_multicast_filters & ((1 << 15) - 1)); | |
1110 | dev_info(dev, "MTU: %d\n", le16_to_cpu(kaweth->configuration.segment_size)); | |
1111 | dev_info(dev, "Read MAC address %pM\n", kaweth->configuration.hw_addr); | |
1da177e4 LT |
1112 | |
1113 | if(!memcmp(&kaweth->configuration.hw_addr, | |
1114 | &bcast_addr, | |
1115 | sizeof(bcast_addr))) { | |
49ae25b0 | 1116 | dev_err(dev, "Firmware not functioning properly, no net device created\n"); |
1da177e4 LT |
1117 | goto err_free_netdev; |
1118 | } | |
1119 | ||
1120 | if(kaweth_set_urb_size(kaweth, KAWETH_BUF_SIZE) < 0) { | |
49ae25b0 | 1121 | dev_dbg(dev, "Error setting URB size\n"); |
1da177e4 LT |
1122 | goto err_free_netdev; |
1123 | } | |
1124 | ||
1125 | if(kaweth_set_sofs_wait(kaweth, KAWETH_SOFS_TO_WAIT) < 0) { | |
49ae25b0 | 1126 | dev_err(dev, "Error setting SOFS wait\n"); |
1da177e4 LT |
1127 | goto err_free_netdev; |
1128 | } | |
1129 | ||
1130 | result = kaweth_set_receive_filter(kaweth, | |
1131 | KAWETH_PACKET_FILTER_DIRECTED | | |
1132 | KAWETH_PACKET_FILTER_BROADCAST | | |
1133 | KAWETH_PACKET_FILTER_MULTICAST); | |
1134 | ||
1135 | if(result < 0) { | |
49ae25b0 | 1136 | dev_err(dev, "Error setting receive filter\n"); |
1da177e4 LT |
1137 | goto err_free_netdev; |
1138 | } | |
1139 | ||
49ae25b0 | 1140 | dev_dbg(dev, "Initializing net device.\n"); |
1da177e4 | 1141 | |
b98b98f9 ON |
1142 | kaweth->intf = intf; |
1143 | ||
1da177e4 LT |
1144 | kaweth->tx_urb = usb_alloc_urb(0, GFP_KERNEL); |
1145 | if (!kaweth->tx_urb) | |
1146 | goto err_free_netdev; | |
1147 | kaweth->rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1148 | if (!kaweth->rx_urb) | |
1149 | goto err_only_tx; | |
1150 | kaweth->irq_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1151 | if (!kaweth->irq_urb) | |
1152 | goto err_tx_and_rx; | |
1153 | ||
997ea58e | 1154 | kaweth->intbuffer = usb_alloc_coherent( kaweth->dev, |
1da177e4 LT |
1155 | INTBUFFERSIZE, |
1156 | GFP_KERNEL, | |
1157 | &kaweth->intbufferhandle); | |
1158 | if (!kaweth->intbuffer) | |
1159 | goto err_tx_and_rx_and_irq; | |
997ea58e | 1160 | kaweth->rx_buf = usb_alloc_coherent( kaweth->dev, |
1da177e4 LT |
1161 | KAWETH_BUF_SIZE, |
1162 | GFP_KERNEL, | |
1163 | &kaweth->rxbufferhandle); | |
1164 | if (!kaweth->rx_buf) | |
1165 | goto err_all_but_rxbuf; | |
1166 | ||
1167 | memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr)); | |
1168 | memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr, | |
1169 | sizeof(kaweth->configuration.hw_addr)); | |
1170 | ||
321ea8b2 | 1171 | netdev->netdev_ops = &kaweth_netdev_ops; |
1da177e4 | 1172 | netdev->watchdog_timeo = KAWETH_TX_TIMEOUT; |
1da177e4 | 1173 | netdev->mtu = le16_to_cpu(kaweth->configuration.segment_size); |
7ad24ea4 | 1174 | netdev->ethtool_ops = &ops; |
1da177e4 LT |
1175 | |
1176 | /* kaweth is zeroed as part of alloc_netdev */ | |
c4028958 | 1177 | INIT_DELAYED_WORK(&kaweth->lowmem_work, kaweth_resubmit_tl); |
1da177e4 LT |
1178 | usb_set_intfdata(intf, kaweth); |
1179 | ||
49ae25b0 | 1180 | SET_NETDEV_DEV(netdev, dev); |
1da177e4 | 1181 | if (register_netdev(netdev) != 0) { |
49ae25b0 | 1182 | dev_err(dev, "Error registering netdev.\n"); |
1da177e4 LT |
1183 | goto err_intfdata; |
1184 | } | |
1185 | ||
49ae25b0 | 1186 | dev_info(dev, "kaweth interface created at %s\n", |
880c9c66 | 1187 | kaweth->net->name); |
1da177e4 | 1188 | |
49ae25b0 | 1189 | dev_dbg(dev, "Kaweth probe returning.\n"); |
1da177e4 LT |
1190 | |
1191 | return 0; | |
1192 | ||
1193 | err_intfdata: | |
1194 | usb_set_intfdata(intf, NULL); | |
997ea58e | 1195 | usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); |
1da177e4 | 1196 | err_all_but_rxbuf: |
997ea58e | 1197 | usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); |
1da177e4 LT |
1198 | err_tx_and_rx_and_irq: |
1199 | usb_free_urb(kaweth->irq_urb); | |
1200 | err_tx_and_rx: | |
1201 | usb_free_urb(kaweth->rx_urb); | |
1202 | err_only_tx: | |
1203 | usb_free_urb(kaweth->tx_urb); | |
1204 | err_free_netdev: | |
1205 | free_netdev(netdev); | |
1206 | ||
1207 | return -EIO; | |
1208 | } | |
1209 | ||
1210 | /**************************************************************** | |
1211 | * kaweth_disconnect | |
1212 | ****************************************************************/ | |
1213 | static void kaweth_disconnect(struct usb_interface *intf) | |
1214 | { | |
1215 | struct kaweth_device *kaweth = usb_get_intfdata(intf); | |
1216 | struct net_device *netdev; | |
1217 | ||
880c9c66 | 1218 | dev_info(&intf->dev, "Unregistering\n"); |
1da177e4 LT |
1219 | |
1220 | usb_set_intfdata(intf, NULL); | |
1221 | if (!kaweth) { | |
25985edc | 1222 | dev_warn(&intf->dev, "unregistering non-existent device\n"); |
1da177e4 LT |
1223 | return; |
1224 | } | |
1225 | netdev = kaweth->net; | |
1da177e4 | 1226 | |
49ae25b0 | 1227 | netdev_dbg(kaweth->net, "Unregistering net device\n"); |
1da177e4 LT |
1228 | unregister_netdev(netdev); |
1229 | ||
1230 | usb_free_urb(kaweth->rx_urb); | |
1231 | usb_free_urb(kaweth->tx_urb); | |
1232 | usb_free_urb(kaweth->irq_urb); | |
1233 | ||
997ea58e DM |
1234 | usb_free_coherent(kaweth->dev, KAWETH_BUF_SIZE, (void *)kaweth->rx_buf, kaweth->rxbufferhandle); |
1235 | usb_free_coherent(kaweth->dev, INTBUFFERSIZE, (void *)kaweth->intbuffer, kaweth->intbufferhandle); | |
1da177e4 LT |
1236 | |
1237 | free_netdev(netdev); | |
1238 | } | |
1239 | ||
1240 | ||
1241 | // FIXME this completion stuff is a modified clone of | |
1242 | // an OLD version of some stuff in usb.c ... | |
1243 | struct usb_api_data { | |
1244 | wait_queue_head_t wqh; | |
1245 | int done; | |
1246 | }; | |
1247 | ||
1248 | /*-------------------------------------------------------------------* | |
1249 | * completion handler for compatibility wrappers (sync control/bulk) * | |
1250 | *-------------------------------------------------------------------*/ | |
7d12e780 | 1251 | static void usb_api_blocking_completion(struct urb *urb) |
1da177e4 LT |
1252 | { |
1253 | struct usb_api_data *awd = (struct usb_api_data *)urb->context; | |
1254 | ||
1255 | awd->done=1; | |
1256 | wake_up(&awd->wqh); | |
1257 | } | |
1258 | ||
1259 | /*-------------------------------------------------------------------* | |
1260 | * COMPATIBILITY STUFF * | |
1261 | *-------------------------------------------------------------------*/ | |
1262 | ||
1263 | // Starts urb and waits for completion or timeout | |
1264 | static int usb_start_wait_urb(struct urb *urb, int timeout, int* actual_length) | |
1265 | { | |
1266 | struct usb_api_data awd; | |
1267 | int status; | |
1268 | ||
1269 | init_waitqueue_head(&awd.wqh); | |
1270 | awd.done = 0; | |
1271 | ||
1272 | urb->context = &awd; | |
49c9e7c2 | 1273 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
1274 | if (status) { |
1275 | // something went wrong | |
1276 | usb_free_urb(urb); | |
1277 | return status; | |
1278 | } | |
1279 | ||
1280 | if (!wait_event_timeout(awd.wqh, awd.done, timeout)) { | |
1281 | // timeout | |
4dc89948 | 1282 | dev_warn(&urb->dev->dev, "usb_control/bulk_msg: timeout\n"); |
1da177e4 LT |
1283 | usb_kill_urb(urb); // remove urb safely |
1284 | status = -ETIMEDOUT; | |
1285 | } | |
1286 | else { | |
1287 | status = urb->status; | |
1288 | } | |
1289 | ||
1290 | if (actual_length) { | |
1291 | *actual_length = urb->actual_length; | |
1292 | } | |
1293 | ||
1294 | usb_free_urb(urb); | |
1295 | return status; | |
1296 | } | |
1297 | ||
1298 | /*-------------------------------------------------------------------*/ | |
1299 | // returns status (negative) or length (positive) | |
1300 | static int kaweth_internal_control_msg(struct usb_device *usb_dev, | |
1301 | unsigned int pipe, | |
1302 | struct usb_ctrlrequest *cmd, void *data, | |
1303 | int len, int timeout) | |
1304 | { | |
1305 | struct urb *urb; | |
1306 | int retv; | |
b98b98f9 | 1307 | int length = 0; /* shut up GCC */ |
1da177e4 | 1308 | |
e4c7f259 | 1309 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
1da177e4 LT |
1310 | if (!urb) |
1311 | return -ENOMEM; | |
1312 | ||
1313 | usb_fill_control_urb(urb, usb_dev, pipe, (unsigned char*)cmd, data, | |
1314 | len, usb_api_blocking_completion, NULL); | |
1315 | ||
1316 | retv = usb_start_wait_urb(urb, timeout, &length); | |
1317 | if (retv < 0) { | |
1318 | return retv; | |
1319 | } | |
1320 | else { | |
1321 | return length; | |
1322 | } | |
1323 | } | |
1324 | ||
d632eb1b | 1325 | module_usb_driver(kaweth_driver); |