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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 1999-2005 Petko Manolov (petkan@users.sourceforge.net) | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * ChangeLog: | |
9 | * .... Most of the time spent on reading sources & docs. | |
10 | * v0.2.x First official release for the Linux kernel. | |
11 | * v0.3.0 Beutified and structured, some bugs fixed. | |
12 | * v0.3.x URBifying bulk requests and bugfixing. First relatively | |
13 | * stable release. Still can touch device's registers only | |
14 | * from top-halves. | |
15 | * v0.4.0 Control messages remained unurbified are now URBs. | |
16 | * Now we can touch the HW at any time. | |
17 | * v0.4.9 Control urbs again use process context to wait. Argh... | |
18 | * Some long standing bugs (enable_net_traffic) fixed. | |
19 | * Also nasty trick about resubmiting control urb from | |
20 | * interrupt context used. Please let me know how it | |
21 | * behaves. Pegasus II support added since this version. | |
22 | * TODO: suppressing HCD warnings spewage on disconnect. | |
23 | * v0.4.13 Ethernet address is now set at probe(), not at open() | |
24 | * time as this seems to break dhcpd. | |
25 | * v0.5.0 branch to 2.5.x kernels | |
26 | * v0.5.1 ethtool support added | |
27 | * v0.5.5 rx socket buffers are in a pool and the their allocation | |
28 | * is out of the interrupt routine. | |
29 | */ | |
30 | ||
1da177e4 LT |
31 | #include <linux/sched.h> |
32 | #include <linux/slab.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/netdevice.h> | |
36 | #include <linux/etherdevice.h> | |
37 | #include <linux/ethtool.h> | |
38 | #include <linux/mii.h> | |
39 | #include <linux/usb.h> | |
40 | #include <linux/module.h> | |
41 | #include <asm/byteorder.h> | |
42 | #include <asm/uaccess.h> | |
43 | #include "pegasus.h" | |
44 | ||
45 | /* | |
46 | * Version Information | |
47 | */ | |
4a1728a2 | 48 | #define DRIVER_VERSION "v0.6.13 (2005/11/13)" |
1da177e4 LT |
49 | #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" |
50 | #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver" | |
51 | ||
52 | static const char driver_name[] = "pegasus"; | |
53 | ||
54 | #undef PEGASUS_WRITE_EEPROM | |
55 | #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \ | |
56 | BMSR_100FULL | BMSR_ANEGCAPABLE) | |
57 | ||
58 | static int loopback = 0; | |
59 | static int mii_mode = 0; | |
a4f81a61 | 60 | static char *devid=NULL; |
1da177e4 LT |
61 | |
62 | static struct usb_eth_dev usb_dev_id[] = { | |
63 | #define PEGASUS_DEV(pn, vid, pid, flags) \ | |
64 | {.name = pn, .vendor = vid, .device = pid, .private = flags}, | |
65 | #include "pegasus.h" | |
66 | #undef PEGASUS_DEV | |
a4f81a61 | 67 | {NULL, 0, 0, 0}, |
1da177e4 LT |
68 | {NULL, 0, 0, 0} |
69 | }; | |
70 | ||
71 | static struct usb_device_id pegasus_ids[] = { | |
72 | #define PEGASUS_DEV(pn, vid, pid, flags) \ | |
73 | {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid}, | |
74 | #include "pegasus.h" | |
75 | #undef PEGASUS_DEV | |
a4f81a61 | 76 | {}, |
1da177e4 LT |
77 | {} |
78 | }; | |
79 | ||
80 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
81 | MODULE_DESCRIPTION(DRIVER_DESC); | |
82 | MODULE_LICENSE("GPL"); | |
83 | module_param(loopback, bool, 0); | |
84 | module_param(mii_mode, bool, 0); | |
a4f81a61 | 85 | module_param(devid, charp, 0); |
1da177e4 LT |
86 | MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)"); |
87 | MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0"); | |
a4f81a61 | 88 | MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'"); |
1da177e4 LT |
89 | |
90 | /* use ethtool to change the level for any given device */ | |
91 | static int msg_level = -1; | |
92 | module_param (msg_level, int, 0); | |
93 | MODULE_PARM_DESC (msg_level, "Override default message level"); | |
94 | ||
95 | MODULE_DEVICE_TABLE(usb, pegasus_ids); | |
96 | ||
97 | static int update_eth_regs_async(pegasus_t *); | |
98 | /* Aargh!!! I _really_ hate such tweaks */ | |
99 | static void ctrl_callback(struct urb *urb, struct pt_regs *regs) | |
100 | { | |
101 | pegasus_t *pegasus = urb->context; | |
102 | ||
103 | if (!pegasus) | |
104 | return; | |
105 | ||
106 | switch (urb->status) { | |
107 | case 0: | |
108 | if (pegasus->flags & ETH_REGS_CHANGE) { | |
109 | pegasus->flags &= ~ETH_REGS_CHANGE; | |
110 | pegasus->flags |= ETH_REGS_CHANGED; | |
111 | update_eth_regs_async(pegasus); | |
112 | return; | |
113 | } | |
114 | break; | |
115 | case -EINPROGRESS: | |
116 | return; | |
117 | case -ENOENT: | |
118 | break; | |
119 | default: | |
120 | if (netif_msg_drv(pegasus)) | |
4a1728a2 | 121 | dev_dbg(&pegasus->intf->dev, "%s, status %d\n", |
1da177e4 LT |
122 | __FUNCTION__, urb->status); |
123 | } | |
124 | pegasus->flags &= ~ETH_REGS_CHANGED; | |
125 | wake_up(&pegasus->ctrl_wait); | |
126 | } | |
127 | ||
128 | static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size, | |
129 | void *data) | |
130 | { | |
131 | int ret; | |
132 | char *buffer; | |
133 | DECLARE_WAITQUEUE(wait, current); | |
134 | ||
135 | buffer = kmalloc(size, GFP_KERNEL); | |
136 | if (!buffer) { | |
137 | if (netif_msg_drv(pegasus)) | |
138 | dev_warn(&pegasus->intf->dev, "out of memory in %s\n", | |
139 | __FUNCTION__); | |
140 | return -ENOMEM; | |
141 | } | |
142 | add_wait_queue(&pegasus->ctrl_wait, &wait); | |
143 | set_current_state(TASK_UNINTERRUPTIBLE); | |
144 | while (pegasus->flags & ETH_REGS_CHANGED) | |
145 | schedule(); | |
146 | remove_wait_queue(&pegasus->ctrl_wait, &wait); | |
147 | set_current_state(TASK_RUNNING); | |
148 | ||
149 | pegasus->dr.bRequestType = PEGASUS_REQT_READ; | |
150 | pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS; | |
151 | pegasus->dr.wValue = cpu_to_le16(0); | |
152 | pegasus->dr.wIndex = cpu_to_le16p(&indx); | |
153 | pegasus->dr.wLength = cpu_to_le16p(&size); | |
154 | pegasus->ctrl_urb->transfer_buffer_length = size; | |
155 | ||
156 | usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, | |
157 | usb_rcvctrlpipe(pegasus->usb, 0), | |
158 | (char *) &pegasus->dr, | |
159 | buffer, size, ctrl_callback, pegasus); | |
160 | ||
161 | add_wait_queue(&pegasus->ctrl_wait, &wait); | |
162 | set_current_state(TASK_UNINTERRUPTIBLE); | |
163 | ||
164 | /* using ATOMIC, we'd never wake up if we slept */ | |
165 | if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { | |
955a2608 DB |
166 | if (ret == -ENODEV) |
167 | netif_device_detach(pegasus->net); | |
1da177e4 LT |
168 | if (netif_msg_drv(pegasus)) |
169 | dev_err(&pegasus->intf->dev, "%s, status %d\n", | |
170 | __FUNCTION__, ret); | |
171 | goto out; | |
172 | } | |
173 | ||
174 | schedule(); | |
175 | out: | |
176 | remove_wait_queue(&pegasus->ctrl_wait, &wait); | |
177 | memcpy(data, buffer, size); | |
178 | kfree(buffer); | |
179 | ||
180 | return ret; | |
181 | } | |
182 | ||
183 | static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size, | |
184 | void *data) | |
185 | { | |
186 | int ret; | |
187 | char *buffer; | |
188 | DECLARE_WAITQUEUE(wait, current); | |
189 | ||
190 | buffer = kmalloc(size, GFP_KERNEL); | |
191 | if (!buffer) { | |
192 | if (netif_msg_drv(pegasus)) | |
193 | dev_warn(&pegasus->intf->dev, "out of memory in %s\n", | |
194 | __FUNCTION__); | |
195 | return -ENOMEM; | |
196 | } | |
197 | memcpy(buffer, data, size); | |
198 | ||
199 | add_wait_queue(&pegasus->ctrl_wait, &wait); | |
200 | set_current_state(TASK_UNINTERRUPTIBLE); | |
201 | while (pegasus->flags & ETH_REGS_CHANGED) | |
202 | schedule(); | |
203 | remove_wait_queue(&pegasus->ctrl_wait, &wait); | |
204 | set_current_state(TASK_RUNNING); | |
205 | ||
206 | pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; | |
207 | pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; | |
208 | pegasus->dr.wValue = cpu_to_le16(0); | |
209 | pegasus->dr.wIndex = cpu_to_le16p(&indx); | |
210 | pegasus->dr.wLength = cpu_to_le16p(&size); | |
211 | pegasus->ctrl_urb->transfer_buffer_length = size; | |
212 | ||
213 | usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, | |
214 | usb_sndctrlpipe(pegasus->usb, 0), | |
215 | (char *) &pegasus->dr, | |
216 | buffer, size, ctrl_callback, pegasus); | |
217 | ||
218 | add_wait_queue(&pegasus->ctrl_wait, &wait); | |
219 | set_current_state(TASK_UNINTERRUPTIBLE); | |
220 | ||
221 | if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { | |
955a2608 DB |
222 | if (ret == -ENODEV) |
223 | netif_device_detach(pegasus->net); | |
1da177e4 LT |
224 | if (netif_msg_drv(pegasus)) |
225 | dev_err(&pegasus->intf->dev, "%s, status %d\n", | |
226 | __FUNCTION__, ret); | |
227 | goto out; | |
228 | } | |
229 | ||
230 | schedule(); | |
231 | out: | |
232 | remove_wait_queue(&pegasus->ctrl_wait, &wait); | |
233 | kfree(buffer); | |
234 | ||
235 | return ret; | |
236 | } | |
237 | ||
238 | static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data) | |
239 | { | |
240 | int ret; | |
241 | char *tmp; | |
242 | DECLARE_WAITQUEUE(wait, current); | |
243 | ||
244 | tmp = kmalloc(1, GFP_KERNEL); | |
245 | if (!tmp) { | |
246 | if (netif_msg_drv(pegasus)) | |
247 | dev_warn(&pegasus->intf->dev, "out of memory in %s\n", | |
248 | __FUNCTION__); | |
249 | return -ENOMEM; | |
250 | } | |
251 | memcpy(tmp, &data, 1); | |
252 | add_wait_queue(&pegasus->ctrl_wait, &wait); | |
253 | set_current_state(TASK_UNINTERRUPTIBLE); | |
254 | while (pegasus->flags & ETH_REGS_CHANGED) | |
255 | schedule(); | |
256 | remove_wait_queue(&pegasus->ctrl_wait, &wait); | |
257 | set_current_state(TASK_RUNNING); | |
258 | ||
259 | pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; | |
260 | pegasus->dr.bRequest = PEGASUS_REQ_SET_REG; | |
261 | pegasus->dr.wValue = cpu_to_le16(data); | |
262 | pegasus->dr.wIndex = cpu_to_le16p(&indx); | |
263 | pegasus->dr.wLength = cpu_to_le16(1); | |
264 | pegasus->ctrl_urb->transfer_buffer_length = 1; | |
265 | ||
266 | usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, | |
267 | usb_sndctrlpipe(pegasus->usb, 0), | |
268 | (char *) &pegasus->dr, | |
016534cf | 269 | tmp, 1, ctrl_callback, pegasus); |
1da177e4 LT |
270 | |
271 | add_wait_queue(&pegasus->ctrl_wait, &wait); | |
272 | set_current_state(TASK_UNINTERRUPTIBLE); | |
273 | ||
274 | if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { | |
955a2608 DB |
275 | if (ret == -ENODEV) |
276 | netif_device_detach(pegasus->net); | |
1da177e4 LT |
277 | if (netif_msg_drv(pegasus)) |
278 | dev_err(&pegasus->intf->dev, "%s, status %d\n", | |
279 | __FUNCTION__, ret); | |
280 | goto out; | |
281 | } | |
282 | ||
283 | schedule(); | |
284 | out: | |
285 | remove_wait_queue(&pegasus->ctrl_wait, &wait); | |
286 | kfree(tmp); | |
287 | ||
288 | return ret; | |
289 | } | |
290 | ||
291 | static int update_eth_regs_async(pegasus_t * pegasus) | |
292 | { | |
293 | int ret; | |
294 | ||
295 | pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; | |
296 | pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; | |
297 | pegasus->dr.wValue = 0; | |
298 | pegasus->dr.wIndex = cpu_to_le16(EthCtrl0); | |
299 | pegasus->dr.wLength = cpu_to_le16(3); | |
300 | pegasus->ctrl_urb->transfer_buffer_length = 3; | |
301 | ||
302 | usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, | |
303 | usb_sndctrlpipe(pegasus->usb, 0), | |
304 | (char *) &pegasus->dr, | |
305 | pegasus->eth_regs, 3, ctrl_callback, pegasus); | |
306 | ||
955a2608 DB |
307 | if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) { |
308 | if (ret == -ENODEV) | |
309 | netif_device_detach(pegasus->net); | |
1da177e4 LT |
310 | if (netif_msg_drv(pegasus)) |
311 | dev_err(&pegasus->intf->dev, "%s, status %d\n", | |
312 | __FUNCTION__, ret); | |
955a2608 | 313 | } |
1da177e4 LT |
314 | |
315 | return ret; | |
316 | } | |
317 | ||
318 | static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd) | |
319 | { | |
320 | int i; | |
321 | __u8 data[4] = { phy, 0, 0, indx }; | |
322 | __le16 regdi; | |
323 | int ret; | |
324 | ||
4a1728a2 PM |
325 | set_register(pegasus, PhyCtrl, 0); |
326 | set_registers(pegasus, PhyAddr, sizeof (data), data); | |
327 | set_register(pegasus, PhyCtrl, (indx | PHY_READ)); | |
1da177e4 LT |
328 | for (i = 0; i < REG_TIMEOUT; i++) { |
329 | ret = get_registers(pegasus, PhyCtrl, 1, data); | |
7e713b82 DB |
330 | if (ret == -ESHUTDOWN) |
331 | goto fail; | |
1da177e4 LT |
332 | if (data[0] & PHY_DONE) |
333 | break; | |
334 | } | |
335 | if (i < REG_TIMEOUT) { | |
336 | ret = get_registers(pegasus, PhyData, 2, ®di); | |
337 | *regd = le16_to_cpu(regdi); | |
4a1728a2 | 338 | return ret; |
1da177e4 | 339 | } |
7e713b82 | 340 | fail: |
1da177e4 LT |
341 | if (netif_msg_drv(pegasus)) |
342 | dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__); | |
343 | ||
4a1728a2 | 344 | return ret; |
1da177e4 LT |
345 | } |
346 | ||
347 | static int mdio_read(struct net_device *dev, int phy_id, int loc) | |
348 | { | |
349 | pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); | |
350 | u16 res; | |
351 | ||
352 | read_mii_word(pegasus, phy_id, loc, &res); | |
353 | return (int)res; | |
354 | } | |
355 | ||
356 | static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 regd) | |
357 | { | |
358 | int i; | |
359 | __u8 data[4] = { phy, 0, 0, indx }; | |
360 | int ret; | |
361 | ||
362 | data[1] = (u8) regd; | |
363 | data[2] = (u8) (regd >> 8); | |
4a1728a2 PM |
364 | set_register(pegasus, PhyCtrl, 0); |
365 | set_registers(pegasus, PhyAddr, sizeof(data), data); | |
366 | set_register(pegasus, PhyCtrl, (indx | PHY_WRITE)); | |
1da177e4 LT |
367 | for (i = 0; i < REG_TIMEOUT; i++) { |
368 | ret = get_registers(pegasus, PhyCtrl, 1, data); | |
7e713b82 DB |
369 | if (ret == -ESHUTDOWN) |
370 | goto fail; | |
1da177e4 LT |
371 | if (data[0] & PHY_DONE) |
372 | break; | |
373 | } | |
374 | if (i < REG_TIMEOUT) | |
4a1728a2 | 375 | return ret; |
1da177e4 | 376 | |
7e713b82 | 377 | fail: |
1da177e4 LT |
378 | if (netif_msg_drv(pegasus)) |
379 | dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__); | |
4a1728a2 | 380 | return -ETIMEDOUT; |
1da177e4 LT |
381 | } |
382 | ||
383 | static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) | |
384 | { | |
385 | pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev); | |
386 | ||
387 | write_mii_word(pegasus, phy_id, loc, val); | |
388 | } | |
389 | ||
390 | static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata) | |
391 | { | |
392 | int i; | |
393 | __u8 tmp; | |
394 | __le16 retdatai; | |
395 | int ret; | |
396 | ||
4a1728a2 PM |
397 | set_register(pegasus, EpromCtrl, 0); |
398 | set_register(pegasus, EpromOffset, index); | |
399 | set_register(pegasus, EpromCtrl, EPROM_READ); | |
1da177e4 LT |
400 | |
401 | for (i = 0; i < REG_TIMEOUT; i++) { | |
402 | ret = get_registers(pegasus, EpromCtrl, 1, &tmp); | |
403 | if (tmp & EPROM_DONE) | |
404 | break; | |
7e713b82 DB |
405 | if (ret == -ESHUTDOWN) |
406 | goto fail; | |
1da177e4 LT |
407 | } |
408 | if (i < REG_TIMEOUT) { | |
409 | ret = get_registers(pegasus, EpromData, 2, &retdatai); | |
410 | *retdata = le16_to_cpu(retdatai); | |
4a1728a2 | 411 | return ret; |
1da177e4 LT |
412 | } |
413 | ||
7e713b82 | 414 | fail: |
1da177e4 LT |
415 | if (netif_msg_drv(pegasus)) |
416 | dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__); | |
4a1728a2 | 417 | return -ETIMEDOUT; |
1da177e4 LT |
418 | } |
419 | ||
420 | #ifdef PEGASUS_WRITE_EEPROM | |
421 | static inline void enable_eprom_write(pegasus_t * pegasus) | |
422 | { | |
423 | __u8 tmp; | |
424 | int ret; | |
425 | ||
4a1728a2 PM |
426 | get_registers(pegasus, EthCtrl2, 1, &tmp); |
427 | set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); | |
1da177e4 LT |
428 | } |
429 | ||
430 | static inline void disable_eprom_write(pegasus_t * pegasus) | |
431 | { | |
432 | __u8 tmp; | |
433 | int ret; | |
434 | ||
4a1728a2 PM |
435 | get_registers(pegasus, EthCtrl2, 1, &tmp); |
436 | set_register(pegasus, EpromCtrl, 0); | |
437 | set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); | |
1da177e4 LT |
438 | } |
439 | ||
440 | static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data) | |
441 | { | |
442 | int i; | |
443 | __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; | |
444 | int ret; | |
445 | ||
4a1728a2 | 446 | set_registers(pegasus, EpromOffset, 4, d); |
1da177e4 | 447 | enable_eprom_write(pegasus); |
4a1728a2 PM |
448 | set_register(pegasus, EpromOffset, index); |
449 | set_registers(pegasus, EpromData, 2, &data); | |
450 | set_register(pegasus, EpromCtrl, EPROM_WRITE); | |
1da177e4 LT |
451 | |
452 | for (i = 0; i < REG_TIMEOUT; i++) { | |
453 | ret = get_registers(pegasus, EpromCtrl, 1, &tmp); | |
7e713b82 DB |
454 | if (ret == -ESHUTDOWN) |
455 | goto fail; | |
1da177e4 LT |
456 | if (tmp & EPROM_DONE) |
457 | break; | |
458 | } | |
459 | disable_eprom_write(pegasus); | |
460 | if (i < REG_TIMEOUT) | |
4a1728a2 | 461 | return ret; |
7e713b82 | 462 | fail: |
1da177e4 LT |
463 | if (netif_msg_drv(pegasus)) |
464 | dev_warn(&pegasus->intf->dev, "fail %s\n", __FUNCTION__); | |
4a1728a2 | 465 | return -ETIMEDOUT; |
1da177e4 LT |
466 | } |
467 | #endif /* PEGASUS_WRITE_EEPROM */ | |
468 | ||
469 | static inline void get_node_id(pegasus_t * pegasus, __u8 * id) | |
470 | { | |
471 | int i; | |
472 | __u16 w16; | |
473 | ||
474 | for (i = 0; i < 3; i++) { | |
475 | read_eprom_word(pegasus, i, &w16); | |
476 | ((__le16 *) id)[i] = cpu_to_le16p(&w16); | |
477 | } | |
478 | } | |
479 | ||
480 | static void set_ethernet_addr(pegasus_t * pegasus) | |
481 | { | |
482 | __u8 node_id[6]; | |
1da177e4 LT |
483 | |
484 | get_node_id(pegasus, node_id); | |
4a1728a2 | 485 | set_registers(pegasus, EthID, sizeof (node_id), node_id); |
1da177e4 LT |
486 | memcpy(pegasus->net->dev_addr, node_id, sizeof (node_id)); |
487 | } | |
488 | ||
489 | static inline int reset_mac(pegasus_t * pegasus) | |
490 | { | |
491 | __u8 data = 0x8; | |
492 | int i; | |
1da177e4 | 493 | |
4a1728a2 | 494 | set_register(pegasus, EthCtrl1, data); |
1da177e4 | 495 | for (i = 0; i < REG_TIMEOUT; i++) { |
4a1728a2 | 496 | get_registers(pegasus, EthCtrl1, 1, &data); |
1da177e4 LT |
497 | if (~data & 0x08) { |
498 | if (loopback & 1) | |
499 | break; | |
500 | if (mii_mode && (pegasus->features & HAS_HOME_PNA)) | |
4a1728a2 | 501 | set_register(pegasus, Gpio1, 0x34); |
1da177e4 | 502 | else |
4a1728a2 PM |
503 | set_register(pegasus, Gpio1, 0x26); |
504 | set_register(pegasus, Gpio0, pegasus->features); | |
505 | set_register(pegasus, Gpio0, DEFAULT_GPIO_SET); | |
1da177e4 LT |
506 | break; |
507 | } | |
508 | } | |
509 | if (i == REG_TIMEOUT) | |
4a1728a2 | 510 | return -ETIMEDOUT; |
1da177e4 LT |
511 | |
512 | if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || | |
513 | usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { | |
4a1728a2 PM |
514 | set_register(pegasus, Gpio0, 0x24); |
515 | set_register(pegasus, Gpio0, 0x26); | |
1da177e4 LT |
516 | } |
517 | if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) { | |
518 | __u16 auxmode; | |
519 | read_mii_word(pegasus, 3, 0x1b, &auxmode); | |
520 | write_mii_word(pegasus, 3, 0x1b, auxmode | 4); | |
521 | } | |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
526 | static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) | |
527 | { | |
528 | __u16 linkpart; | |
529 | __u8 data[4]; | |
530 | pegasus_t *pegasus = netdev_priv(dev); | |
531 | int ret; | |
532 | ||
533 | read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart); | |
534 | data[0] = 0xc9; | |
535 | data[1] = 0; | |
536 | if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) | |
537 | data[1] |= 0x20; /* set full duplex */ | |
538 | if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) | |
539 | data[1] |= 0x10; /* set 100 Mbps */ | |
540 | if (mii_mode) | |
541 | data[1] = 0; | |
542 | data[2] = (loopback & 1) ? 0x09 : 0x01; | |
543 | ||
544 | memcpy(pegasus->eth_regs, data, sizeof (data)); | |
545 | ret = set_registers(pegasus, EthCtrl0, 3, data); | |
546 | ||
547 | if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || | |
efafe6fb | 548 | usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 || |
1da177e4 LT |
549 | usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { |
550 | u16 auxmode; | |
551 | read_mii_word(pegasus, 0, 0x1b, &auxmode); | |
552 | write_mii_word(pegasus, 0, 0x1b, auxmode | 4); | |
553 | } | |
554 | ||
4a1728a2 | 555 | return ret; |
1da177e4 LT |
556 | } |
557 | ||
558 | static void fill_skb_pool(pegasus_t * pegasus) | |
559 | { | |
560 | int i; | |
561 | ||
562 | for (i = 0; i < RX_SKBS; i++) { | |
563 | if (pegasus->rx_pool[i]) | |
564 | continue; | |
565 | pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2); | |
566 | /* | |
567 | ** we give up if the allocation fail. the tasklet will be | |
568 | ** rescheduled again anyway... | |
569 | */ | |
570 | if (pegasus->rx_pool[i] == NULL) | |
571 | return; | |
572 | pegasus->rx_pool[i]->dev = pegasus->net; | |
573 | skb_reserve(pegasus->rx_pool[i], 2); | |
574 | } | |
575 | } | |
576 | ||
577 | static void free_skb_pool(pegasus_t * pegasus) | |
578 | { | |
579 | int i; | |
580 | ||
581 | for (i = 0; i < RX_SKBS; i++) { | |
582 | if (pegasus->rx_pool[i]) { | |
583 | dev_kfree_skb(pegasus->rx_pool[i]); | |
584 | pegasus->rx_pool[i] = NULL; | |
585 | } | |
586 | } | |
587 | } | |
588 | ||
589 | static inline struct sk_buff *pull_skb(pegasus_t * pegasus) | |
590 | { | |
591 | int i; | |
592 | struct sk_buff *skb; | |
593 | ||
594 | for (i = 0; i < RX_SKBS; i++) { | |
595 | if (likely(pegasus->rx_pool[i] != NULL)) { | |
596 | skb = pegasus->rx_pool[i]; | |
597 | pegasus->rx_pool[i] = NULL; | |
598 | return skb; | |
599 | } | |
600 | } | |
601 | return NULL; | |
602 | } | |
603 | ||
604 | static void read_bulk_callback(struct urb *urb, struct pt_regs *regs) | |
605 | { | |
606 | pegasus_t *pegasus = urb->context; | |
607 | struct net_device *net; | |
608 | int rx_status, count = urb->actual_length; | |
609 | u8 *buf = urb->transfer_buffer; | |
610 | __u16 pkt_len; | |
611 | ||
612 | if (!pegasus) | |
613 | return; | |
614 | ||
615 | net = pegasus->net; | |
616 | if (!netif_device_present(net) || !netif_running(net)) | |
617 | return; | |
618 | ||
619 | switch (urb->status) { | |
620 | case 0: | |
621 | break; | |
38e2bfc9 | 622 | case -ETIME: |
1da177e4 LT |
623 | if (netif_msg_rx_err(pegasus)) |
624 | pr_debug("%s: reset MAC\n", net->name); | |
625 | pegasus->flags &= ~PEGASUS_RX_BUSY; | |
626 | break; | |
627 | case -EPIPE: /* stall, or disconnect from TT */ | |
628 | /* FIXME schedule work to clear the halt */ | |
629 | if (netif_msg_rx_err(pegasus)) | |
630 | printk(KERN_WARNING "%s: no rx stall recovery\n", | |
631 | net->name); | |
632 | return; | |
633 | case -ENOENT: | |
634 | case -ECONNRESET: | |
635 | case -ESHUTDOWN: | |
636 | if (netif_msg_ifdown(pegasus)) | |
637 | pr_debug("%s: rx unlink, %d\n", net->name, urb->status); | |
638 | return; | |
639 | default: | |
640 | if (netif_msg_rx_err(pegasus)) | |
641 | pr_debug("%s: RX status %d\n", net->name, urb->status); | |
642 | goto goon; | |
643 | } | |
644 | ||
645 | if (!count || count < 4) | |
646 | goto goon; | |
647 | ||
648 | rx_status = buf[count - 2]; | |
649 | if (rx_status & 0x1e) { | |
650 | if (netif_msg_rx_err(pegasus)) | |
651 | pr_debug("%s: RX packet error %x\n", | |
652 | net->name, rx_status); | |
653 | pegasus->stats.rx_errors++; | |
654 | if (rx_status & 0x06) // long or runt | |
655 | pegasus->stats.rx_length_errors++; | |
656 | if (rx_status & 0x08) | |
657 | pegasus->stats.rx_crc_errors++; | |
658 | if (rx_status & 0x10) // extra bits | |
659 | pegasus->stats.rx_frame_errors++; | |
660 | goto goon; | |
661 | } | |
662 | if (pegasus->chip == 0x8513) { | |
663 | pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); | |
664 | pkt_len &= 0x0fff; | |
665 | pegasus->rx_skb->data += 2; | |
666 | } else { | |
667 | pkt_len = buf[count - 3] << 8; | |
668 | pkt_len += buf[count - 4]; | |
669 | pkt_len &= 0xfff; | |
670 | pkt_len -= 8; | |
671 | } | |
672 | ||
a85a46f2 KV |
673 | /* |
674 | * If the packet is unreasonably long, quietly drop it rather than | |
675 | * kernel panicing by calling skb_put. | |
676 | */ | |
677 | if (pkt_len > PEGASUS_MTU) | |
678 | goto goon; | |
679 | ||
1da177e4 LT |
680 | /* |
681 | * at this point we are sure pegasus->rx_skb != NULL | |
682 | * so we go ahead and pass up the packet. | |
683 | */ | |
684 | skb_put(pegasus->rx_skb, pkt_len); | |
685 | pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); | |
686 | netif_rx(pegasus->rx_skb); | |
687 | pegasus->stats.rx_packets++; | |
688 | pegasus->stats.rx_bytes += pkt_len; | |
689 | ||
690 | if (pegasus->flags & PEGASUS_UNPLUG) | |
691 | return; | |
692 | ||
693 | spin_lock(&pegasus->rx_pool_lock); | |
694 | pegasus->rx_skb = pull_skb(pegasus); | |
695 | spin_unlock(&pegasus->rx_pool_lock); | |
696 | ||
697 | if (pegasus->rx_skb == NULL) | |
698 | goto tl_sched; | |
699 | goon: | |
700 | usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, | |
701 | usb_rcvbulkpipe(pegasus->usb, 1), | |
702 | pegasus->rx_skb->data, PEGASUS_MTU + 8, | |
703 | read_bulk_callback, pegasus); | |
955a2608 DB |
704 | rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); |
705 | if (rx_status == -ENODEV) | |
706 | netif_device_detach(pegasus->net); | |
707 | else if (rx_status) { | |
1da177e4 LT |
708 | pegasus->flags |= PEGASUS_RX_URB_FAIL; |
709 | goto tl_sched; | |
710 | } else { | |
711 | pegasus->flags &= ~PEGASUS_RX_URB_FAIL; | |
712 | } | |
713 | ||
714 | return; | |
715 | ||
716 | tl_sched: | |
717 | tasklet_schedule(&pegasus->rx_tl); | |
718 | } | |
719 | ||
720 | static void rx_fixup(unsigned long data) | |
721 | { | |
722 | pegasus_t *pegasus; | |
723 | unsigned long flags; | |
955a2608 | 724 | int status; |
1da177e4 LT |
725 | |
726 | pegasus = (pegasus_t *) data; | |
727 | if (pegasus->flags & PEGASUS_UNPLUG) | |
728 | return; | |
729 | ||
730 | spin_lock_irqsave(&pegasus->rx_pool_lock, flags); | |
731 | fill_skb_pool(pegasus); | |
732 | if (pegasus->flags & PEGASUS_RX_URB_FAIL) | |
733 | if (pegasus->rx_skb) | |
734 | goto try_again; | |
735 | if (pegasus->rx_skb == NULL) { | |
736 | pegasus->rx_skb = pull_skb(pegasus); | |
737 | } | |
738 | if (pegasus->rx_skb == NULL) { | |
739 | if (netif_msg_rx_err(pegasus)) | |
740 | printk(KERN_WARNING "%s: low on memory\n", | |
741 | pegasus->net->name); | |
742 | tasklet_schedule(&pegasus->rx_tl); | |
743 | goto done; | |
744 | } | |
745 | usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, | |
746 | usb_rcvbulkpipe(pegasus->usb, 1), | |
747 | pegasus->rx_skb->data, PEGASUS_MTU + 8, | |
748 | read_bulk_callback, pegasus); | |
749 | try_again: | |
955a2608 DB |
750 | status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); |
751 | if (status == -ENODEV) | |
752 | netif_device_detach(pegasus->net); | |
753 | else if (status) { | |
1da177e4 LT |
754 | pegasus->flags |= PEGASUS_RX_URB_FAIL; |
755 | tasklet_schedule(&pegasus->rx_tl); | |
756 | } else { | |
757 | pegasus->flags &= ~PEGASUS_RX_URB_FAIL; | |
758 | } | |
759 | done: | |
760 | spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags); | |
761 | } | |
762 | ||
763 | static void write_bulk_callback(struct urb *urb, struct pt_regs *regs) | |
764 | { | |
765 | pegasus_t *pegasus = urb->context; | |
766 | struct net_device *net = pegasus->net; | |
767 | ||
768 | if (!pegasus) | |
769 | return; | |
770 | ||
771 | if (!netif_device_present(net) || !netif_running(net)) | |
772 | return; | |
773 | ||
774 | switch (urb->status) { | |
775 | case -EPIPE: | |
776 | /* FIXME schedule_work() to clear the tx halt */ | |
777 | netif_stop_queue(net); | |
778 | if (netif_msg_tx_err(pegasus)) | |
779 | printk(KERN_WARNING "%s: no tx stall recovery\n", | |
780 | net->name); | |
781 | return; | |
782 | case -ENOENT: | |
783 | case -ECONNRESET: | |
784 | case -ESHUTDOWN: | |
785 | if (netif_msg_ifdown(pegasus)) | |
786 | pr_debug("%s: tx unlink, %d\n", net->name, urb->status); | |
787 | return; | |
788 | default: | |
789 | if (netif_msg_tx_err(pegasus)) | |
790 | pr_info("%s: TX status %d\n", net->name, urb->status); | |
791 | /* FALL THROUGH */ | |
792 | case 0: | |
793 | break; | |
794 | } | |
795 | ||
796 | net->trans_start = jiffies; | |
797 | netif_wake_queue(net); | |
798 | } | |
799 | ||
800 | static void intr_callback(struct urb *urb, struct pt_regs *regs) | |
801 | { | |
802 | pegasus_t *pegasus = urb->context; | |
803 | struct net_device *net; | |
804 | int status; | |
805 | ||
806 | if (!pegasus) | |
807 | return; | |
808 | net = pegasus->net; | |
809 | ||
810 | switch (urb->status) { | |
811 | case 0: | |
812 | break; | |
813 | case -ECONNRESET: /* unlink */ | |
814 | case -ENOENT: | |
815 | case -ESHUTDOWN: | |
816 | return; | |
817 | default: | |
818 | /* some Pegasus-I products report LOTS of data | |
819 | * toggle errors... avoid log spamming | |
820 | */ | |
821 | if (netif_msg_timer(pegasus)) | |
822 | pr_debug("%s: intr status %d\n", net->name, | |
823 | urb->status); | |
824 | } | |
825 | ||
826 | if (urb->actual_length >= 6) { | |
827 | u8 * d = urb->transfer_buffer; | |
828 | ||
829 | /* byte 0 == tx_status1, reg 2B */ | |
830 | if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL | |
831 | |LATE_COL|JABBER_TIMEOUT)) { | |
832 | pegasus->stats.tx_errors++; | |
833 | if (d[0] & TX_UNDERRUN) | |
834 | pegasus->stats.tx_fifo_errors++; | |
835 | if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) | |
836 | pegasus->stats.tx_aborted_errors++; | |
837 | if (d[0] & LATE_COL) | |
838 | pegasus->stats.tx_window_errors++; | |
839 | } | |
840 | ||
841 | /* d[5].LINK_STATUS lies on some adapters. | |
842 | * d[0].NO_CARRIER kicks in only with failed TX. | |
843 | * ... so monitoring with MII may be safest. | |
844 | */ | |
845 | if (d[0] & NO_CARRIER) | |
846 | netif_carrier_off(net); | |
847 | else | |
848 | netif_carrier_on(net); | |
849 | ||
850 | /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ | |
851 | pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; | |
852 | } | |
853 | ||
854 | status = usb_submit_urb(urb, SLAB_ATOMIC); | |
955a2608 DB |
855 | if (status == -ENODEV) |
856 | netif_device_detach(pegasus->net); | |
1da177e4 LT |
857 | if (status && netif_msg_timer(pegasus)) |
858 | printk(KERN_ERR "%s: can't resubmit interrupt urb, %d\n", | |
859 | net->name, status); | |
860 | } | |
861 | ||
862 | static void pegasus_tx_timeout(struct net_device *net) | |
863 | { | |
864 | pegasus_t *pegasus = netdev_priv(net); | |
865 | if (netif_msg_timer(pegasus)) | |
866 | printk(KERN_WARNING "%s: tx timeout\n", net->name); | |
1da177e4 LT |
867 | usb_unlink_urb(pegasus->tx_urb); |
868 | pegasus->stats.tx_errors++; | |
869 | } | |
870 | ||
871 | static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net) | |
872 | { | |
873 | pegasus_t *pegasus = netdev_priv(net); | |
874 | int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; | |
875 | int res; | |
876 | __u16 l16 = skb->len; | |
877 | ||
878 | netif_stop_queue(net); | |
879 | ||
880 | ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); | |
881 | memcpy(pegasus->tx_buff + 2, skb->data, skb->len); | |
882 | usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, | |
883 | usb_sndbulkpipe(pegasus->usb, 2), | |
884 | pegasus->tx_buff, count, | |
885 | write_bulk_callback, pegasus); | |
886 | if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { | |
887 | if (netif_msg_tx_err(pegasus)) | |
888 | printk(KERN_WARNING "%s: fail tx, %d\n", | |
889 | net->name, res); | |
890 | switch (res) { | |
891 | case -EPIPE: /* stall, or disconnect from TT */ | |
892 | /* cleanup should already have been scheduled */ | |
893 | break; | |
894 | case -ENODEV: /* disconnect() upcoming */ | |
955a2608 | 895 | netif_device_detach(pegasus->net); |
1da177e4 LT |
896 | break; |
897 | default: | |
898 | pegasus->stats.tx_errors++; | |
899 | netif_start_queue(net); | |
900 | } | |
901 | } else { | |
902 | pegasus->stats.tx_packets++; | |
903 | pegasus->stats.tx_bytes += skb->len; | |
904 | net->trans_start = jiffies; | |
905 | } | |
906 | dev_kfree_skb(skb); | |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
911 | static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev) | |
912 | { | |
913 | return &((pegasus_t *) netdev_priv(dev))->stats; | |
914 | } | |
915 | ||
916 | static inline void disable_net_traffic(pegasus_t * pegasus) | |
917 | { | |
918 | int tmp = 0; | |
1da177e4 | 919 | |
4a1728a2 | 920 | set_registers(pegasus, EthCtrl0, 2, &tmp); |
1da177e4 LT |
921 | } |
922 | ||
923 | static inline void get_interrupt_interval(pegasus_t * pegasus) | |
924 | { | |
925 | __u8 data[2]; | |
926 | ||
927 | read_eprom_word(pegasus, 4, (__u16 *) data); | |
a85a46f2 KV |
928 | if (pegasus->usb->speed != USB_SPEED_HIGH) { |
929 | if (data[1] < 0x80) { | |
930 | if (netif_msg_timer(pegasus)) | |
931 | dev_info(&pegasus->intf->dev, "intr interval " | |
932 | "changed from %ums to %ums\n", | |
933 | data[1], 0x80); | |
934 | data[1] = 0x80; | |
935 | #ifdef PEGASUS_WRITE_EEPROM | |
936 | write_eprom_word(pegasus, 4, *(__u16 *) data); | |
1da177e4 | 937 | #endif |
a85a46f2 | 938 | } |
1da177e4 LT |
939 | } |
940 | pegasus->intr_interval = data[1]; | |
941 | } | |
942 | ||
943 | static void set_carrier(struct net_device *net) | |
944 | { | |
945 | pegasus_t *pegasus = netdev_priv(net); | |
946 | u16 tmp; | |
947 | ||
a85a46f2 | 948 | if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) |
1da177e4 | 949 | return; |
a85a46f2 | 950 | |
1da177e4 LT |
951 | if (tmp & BMSR_LSTATUS) |
952 | netif_carrier_on(net); | |
953 | else | |
954 | netif_carrier_off(net); | |
955 | } | |
956 | ||
957 | static void free_all_urbs(pegasus_t * pegasus) | |
958 | { | |
959 | usb_free_urb(pegasus->intr_urb); | |
960 | usb_free_urb(pegasus->tx_urb); | |
961 | usb_free_urb(pegasus->rx_urb); | |
962 | usb_free_urb(pegasus->ctrl_urb); | |
963 | } | |
964 | ||
965 | static void unlink_all_urbs(pegasus_t * pegasus) | |
966 | { | |
967 | usb_kill_urb(pegasus->intr_urb); | |
968 | usb_kill_urb(pegasus->tx_urb); | |
969 | usb_kill_urb(pegasus->rx_urb); | |
970 | usb_kill_urb(pegasus->ctrl_urb); | |
971 | } | |
972 | ||
973 | static int alloc_urbs(pegasus_t * pegasus) | |
974 | { | |
975 | pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); | |
976 | if (!pegasus->ctrl_urb) { | |
977 | return 0; | |
978 | } | |
979 | pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
980 | if (!pegasus->rx_urb) { | |
981 | usb_free_urb(pegasus->ctrl_urb); | |
982 | return 0; | |
983 | } | |
984 | pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
985 | if (!pegasus->tx_urb) { | |
986 | usb_free_urb(pegasus->rx_urb); | |
987 | usb_free_urb(pegasus->ctrl_urb); | |
988 | return 0; | |
989 | } | |
990 | pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
991 | if (!pegasus->intr_urb) { | |
992 | usb_free_urb(pegasus->tx_urb); | |
993 | usb_free_urb(pegasus->rx_urb); | |
994 | usb_free_urb(pegasus->ctrl_urb); | |
995 | return 0; | |
996 | } | |
997 | ||
998 | return 1; | |
999 | } | |
1000 | ||
1001 | static int pegasus_open(struct net_device *net) | |
1002 | { | |
1003 | pegasus_t *pegasus = netdev_priv(net); | |
1004 | int res; | |
1005 | ||
1006 | if (pegasus->rx_skb == NULL) | |
1007 | pegasus->rx_skb = pull_skb(pegasus); | |
1008 | /* | |
1009 | ** Note: no point to free the pool. it is empty :-) | |
1010 | */ | |
1011 | if (!pegasus->rx_skb) | |
1012 | return -ENOMEM; | |
1013 | ||
1014 | res = set_registers(pegasus, EthID, 6, net->dev_addr); | |
1015 | ||
1016 | usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, | |
1017 | usb_rcvbulkpipe(pegasus->usb, 1), | |
1018 | pegasus->rx_skb->data, PEGASUS_MTU + 8, | |
1019 | read_bulk_callback, pegasus); | |
1020 | if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { | |
955a2608 DB |
1021 | if (res == -ENODEV) |
1022 | netif_device_detach(pegasus->net); | |
1da177e4 LT |
1023 | if (netif_msg_ifup(pegasus)) |
1024 | pr_debug("%s: failed rx_urb, %d", net->name, res); | |
1025 | goto exit; | |
1026 | } | |
1027 | ||
1028 | usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, | |
1029 | usb_rcvintpipe(pegasus->usb, 3), | |
1030 | pegasus->intr_buff, sizeof (pegasus->intr_buff), | |
1031 | intr_callback, pegasus, pegasus->intr_interval); | |
1032 | if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { | |
955a2608 DB |
1033 | if (res == -ENODEV) |
1034 | netif_device_detach(pegasus->net); | |
1da177e4 LT |
1035 | if (netif_msg_ifup(pegasus)) |
1036 | pr_debug("%s: failed intr_urb, %d\n", net->name, res); | |
1037 | usb_kill_urb(pegasus->rx_urb); | |
1038 | goto exit; | |
1039 | } | |
1040 | if ((res = enable_net_traffic(net, pegasus->usb))) { | |
1041 | if (netif_msg_ifup(pegasus)) | |
1042 | pr_debug("%s: can't enable_net_traffic() - %d\n", | |
1043 | net->name, res); | |
1044 | res = -EIO; | |
1045 | usb_kill_urb(pegasus->rx_urb); | |
1046 | usb_kill_urb(pegasus->intr_urb); | |
1047 | free_skb_pool(pegasus); | |
1048 | goto exit; | |
1049 | } | |
1050 | set_carrier(net); | |
1051 | netif_start_queue(net); | |
1052 | if (netif_msg_ifup(pegasus)) | |
1053 | pr_debug("%s: open\n", net->name); | |
1054 | res = 0; | |
1055 | exit: | |
1056 | return res; | |
1057 | } | |
1058 | ||
1059 | static int pegasus_close(struct net_device *net) | |
1060 | { | |
1061 | pegasus_t *pegasus = netdev_priv(net); | |
1062 | ||
1063 | netif_stop_queue(net); | |
1064 | if (!(pegasus->flags & PEGASUS_UNPLUG)) | |
1065 | disable_net_traffic(pegasus); | |
1066 | tasklet_kill(&pegasus->rx_tl); | |
1067 | unlink_all_urbs(pegasus); | |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | static void pegasus_get_drvinfo(struct net_device *dev, | |
1073 | struct ethtool_drvinfo *info) | |
1074 | { | |
1075 | pegasus_t *pegasus = netdev_priv(dev); | |
1076 | strncpy(info->driver, driver_name, sizeof (info->driver) - 1); | |
1077 | strncpy(info->version, DRIVER_VERSION, sizeof (info->version) - 1); | |
1078 | usb_make_path(pegasus->usb, info->bus_info, sizeof (info->bus_info)); | |
1079 | } | |
1080 | ||
1081 | /* also handles three patterns of some kind in hardware */ | |
1082 | #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) | |
1083 | ||
1084 | static void | |
1085 | pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) | |
1086 | { | |
1087 | pegasus_t *pegasus = netdev_priv(dev); | |
1088 | ||
1089 | wol->supported = WAKE_MAGIC | WAKE_PHY; | |
1090 | wol->wolopts = pegasus->wolopts; | |
1091 | } | |
1092 | ||
1093 | static int | |
1094 | pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) | |
1095 | { | |
1096 | pegasus_t *pegasus = netdev_priv(dev); | |
1097 | u8 reg78 = 0x04; | |
1098 | ||
1099 | if (wol->wolopts & ~WOL_SUPPORTED) | |
1100 | return -EINVAL; | |
1101 | ||
1102 | if (wol->wolopts & WAKE_MAGIC) | |
1103 | reg78 |= 0x80; | |
1104 | if (wol->wolopts & WAKE_PHY) | |
1105 | reg78 |= 0x40; | |
1106 | /* FIXME this 0x10 bit still needs to get set in the chip... */ | |
1107 | if (wol->wolopts) | |
1108 | pegasus->eth_regs[0] |= 0x10; | |
1109 | else | |
1110 | pegasus->eth_regs[0] &= ~0x10; | |
1111 | pegasus->wolopts = wol->wolopts; | |
1112 | return set_register(pegasus, WakeupControl, reg78); | |
1113 | } | |
1114 | ||
1115 | static inline void pegasus_reset_wol(struct net_device *dev) | |
1116 | { | |
1117 | struct ethtool_wolinfo wol; | |
1118 | ||
1119 | memset(&wol, 0, sizeof wol); | |
1120 | (void) pegasus_set_wol(dev, &wol); | |
1121 | } | |
1122 | ||
1123 | static int | |
1124 | pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) | |
1125 | { | |
1126 | pegasus_t *pegasus; | |
1127 | ||
1128 | if (in_atomic()) | |
1129 | return 0; | |
1130 | ||
1131 | pegasus = netdev_priv(dev); | |
1132 | mii_ethtool_gset(&pegasus->mii, ecmd); | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
1137 | static int | |
1138 | pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) | |
1139 | { | |
1140 | pegasus_t *pegasus = netdev_priv(dev); | |
1141 | return mii_ethtool_sset(&pegasus->mii, ecmd); | |
1142 | } | |
1143 | ||
1144 | static int pegasus_nway_reset(struct net_device *dev) | |
1145 | { | |
1146 | pegasus_t *pegasus = netdev_priv(dev); | |
1147 | return mii_nway_restart(&pegasus->mii); | |
1148 | } | |
1149 | ||
1150 | static u32 pegasus_get_link(struct net_device *dev) | |
1151 | { | |
1152 | pegasus_t *pegasus = netdev_priv(dev); | |
1153 | return mii_link_ok(&pegasus->mii); | |
1154 | } | |
1155 | ||
1156 | static u32 pegasus_get_msglevel(struct net_device *dev) | |
1157 | { | |
1158 | pegasus_t *pegasus = netdev_priv(dev); | |
1159 | return pegasus->msg_enable; | |
1160 | } | |
1161 | ||
1162 | static void pegasus_set_msglevel(struct net_device *dev, u32 v) | |
1163 | { | |
1164 | pegasus_t *pegasus = netdev_priv(dev); | |
1165 | pegasus->msg_enable = v; | |
1166 | } | |
1167 | ||
1168 | static struct ethtool_ops ops = { | |
1169 | .get_drvinfo = pegasus_get_drvinfo, | |
1170 | .get_settings = pegasus_get_settings, | |
1171 | .set_settings = pegasus_set_settings, | |
1172 | .nway_reset = pegasus_nway_reset, | |
1173 | .get_link = pegasus_get_link, | |
1174 | .get_msglevel = pegasus_get_msglevel, | |
1175 | .set_msglevel = pegasus_set_msglevel, | |
1176 | .get_wol = pegasus_get_wol, | |
1177 | .set_wol = pegasus_set_wol, | |
1178 | }; | |
1179 | ||
1180 | static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd) | |
1181 | { | |
1182 | __u16 *data = (__u16 *) & rq->ifr_ifru; | |
1183 | pegasus_t *pegasus = netdev_priv(net); | |
1184 | int res; | |
1185 | ||
1186 | switch (cmd) { | |
1187 | case SIOCDEVPRIVATE: | |
1188 | data[0] = pegasus->phy; | |
1189 | case SIOCDEVPRIVATE + 1: | |
1190 | read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); | |
1191 | res = 0; | |
1192 | break; | |
1193 | case SIOCDEVPRIVATE + 2: | |
1194 | if (!capable(CAP_NET_ADMIN)) | |
1195 | return -EPERM; | |
1196 | write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]); | |
1197 | res = 0; | |
1198 | break; | |
1199 | default: | |
1200 | res = -EOPNOTSUPP; | |
1201 | } | |
1202 | return res; | |
1203 | } | |
1204 | ||
1205 | static void pegasus_set_multicast(struct net_device *net) | |
1206 | { | |
1207 | pegasus_t *pegasus = netdev_priv(net); | |
1208 | ||
1209 | if (net->flags & IFF_PROMISC) { | |
1210 | pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; | |
1211 | if (netif_msg_link(pegasus)) | |
1212 | pr_info("%s: Promiscuous mode enabled.\n", net->name); | |
ae0a97bf | 1213 | } else if (net->mc_count || |
1da177e4 LT |
1214 | (net->flags & IFF_ALLMULTI)) { |
1215 | pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; | |
1216 | pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; | |
1217 | if (netif_msg_link(pegasus)) | |
1218 | pr_info("%s: set allmulti\n", net->name); | |
1219 | } else { | |
1220 | pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; | |
1221 | pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; | |
1222 | } | |
1223 | ||
1224 | pegasus->flags |= ETH_REGS_CHANGE; | |
1225 | ctrl_callback(pegasus->ctrl_urb, NULL); | |
1226 | } | |
1227 | ||
1228 | static __u8 mii_phy_probe(pegasus_t * pegasus) | |
1229 | { | |
1230 | int i; | |
1231 | __u16 tmp; | |
1232 | ||
1233 | for (i = 0; i < 32; i++) { | |
1234 | read_mii_word(pegasus, i, MII_BMSR, &tmp); | |
1235 | if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) | |
1236 | continue; | |
1237 | else | |
1238 | return i; | |
1239 | } | |
1240 | ||
1241 | return 0xff; | |
1242 | } | |
1243 | ||
1244 | static inline void setup_pegasus_II(pegasus_t * pegasus) | |
1245 | { | |
1246 | __u8 data = 0xa5; | |
1da177e4 | 1247 | |
4a1728a2 PM |
1248 | set_register(pegasus, Reg1d, 0); |
1249 | set_register(pegasus, Reg7b, 1); | |
1da177e4 LT |
1250 | mdelay(100); |
1251 | if ((pegasus->features & HAS_HOME_PNA) && mii_mode) | |
4a1728a2 | 1252 | set_register(pegasus, Reg7b, 0); |
1da177e4 | 1253 | else |
4a1728a2 | 1254 | set_register(pegasus, Reg7b, 2); |
1da177e4 | 1255 | |
4a1728a2 PM |
1256 | set_register(pegasus, 0x83, data); |
1257 | get_registers(pegasus, 0x83, 1, &data); | |
1da177e4 LT |
1258 | |
1259 | if (data == 0xa5) { | |
1260 | pegasus->chip = 0x8513; | |
1261 | } else { | |
1262 | pegasus->chip = 0; | |
1263 | } | |
1264 | ||
4a1728a2 PM |
1265 | set_register(pegasus, 0x80, 0xc0); |
1266 | set_register(pegasus, 0x83, 0xff); | |
1267 | set_register(pegasus, 0x84, 0x01); | |
1da177e4 LT |
1268 | |
1269 | if (pegasus->features & HAS_HOME_PNA && mii_mode) | |
4a1728a2 | 1270 | set_register(pegasus, Reg81, 6); |
1da177e4 | 1271 | else |
4a1728a2 | 1272 | set_register(pegasus, Reg81, 2); |
1da177e4 LT |
1273 | } |
1274 | ||
1275 | ||
1276 | static struct workqueue_struct *pegasus_workqueue = NULL; | |
1277 | #define CARRIER_CHECK_DELAY (2 * HZ) | |
1278 | ||
1279 | static void check_carrier(void *data) | |
1280 | { | |
1281 | pegasus_t *pegasus = data; | |
1282 | set_carrier(pegasus->net); | |
1283 | if (!(pegasus->flags & PEGASUS_UNPLUG)) { | |
1284 | queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, | |
1285 | CARRIER_CHECK_DELAY); | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | static int pegasus_probe(struct usb_interface *intf, | |
1290 | const struct usb_device_id *id) | |
1291 | { | |
1292 | struct usb_device *dev = interface_to_usbdev(intf); | |
1293 | struct net_device *net; | |
1294 | pegasus_t *pegasus; | |
1295 | int dev_index = id - pegasus_ids; | |
1296 | int res = -ENOMEM; | |
1297 | ||
1298 | usb_get_dev(dev); | |
1299 | net = alloc_etherdev(sizeof(struct pegasus)); | |
1300 | if (!net) { | |
1301 | dev_err(&intf->dev, "can't allocate %s\n", "device"); | |
1302 | goto out; | |
1303 | } | |
1304 | ||
1305 | pegasus = netdev_priv(net); | |
1306 | memset(pegasus, 0, sizeof (struct pegasus)); | |
1307 | pegasus->dev_index = dev_index; | |
1308 | init_waitqueue_head(&pegasus->ctrl_wait); | |
1309 | ||
1310 | if (!alloc_urbs(pegasus)) { | |
1311 | dev_err(&intf->dev, "can't allocate %s\n", "urbs"); | |
1312 | goto out1; | |
1313 | } | |
1314 | ||
1315 | tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus); | |
1316 | ||
1317 | INIT_WORK(&pegasus->carrier_check, check_carrier, pegasus); | |
1318 | ||
1319 | pegasus->intf = intf; | |
1320 | pegasus->usb = dev; | |
1321 | pegasus->net = net; | |
1322 | SET_MODULE_OWNER(net); | |
1323 | net->open = pegasus_open; | |
1324 | net->stop = pegasus_close; | |
1325 | net->watchdog_timeo = PEGASUS_TX_TIMEOUT; | |
1326 | net->tx_timeout = pegasus_tx_timeout; | |
1327 | net->do_ioctl = pegasus_ioctl; | |
1328 | net->hard_start_xmit = pegasus_start_xmit; | |
1329 | net->set_multicast_list = pegasus_set_multicast; | |
1330 | net->get_stats = pegasus_netdev_stats; | |
1331 | SET_ETHTOOL_OPS(net, &ops); | |
1332 | pegasus->mii.dev = net; | |
1333 | pegasus->mii.mdio_read = mdio_read; | |
1334 | pegasus->mii.mdio_write = mdio_write; | |
1335 | pegasus->mii.phy_id_mask = 0x1f; | |
1336 | pegasus->mii.reg_num_mask = 0x1f; | |
1337 | spin_lock_init(&pegasus->rx_pool_lock); | |
1338 | pegasus->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV | |
1339 | | NETIF_MSG_PROBE | NETIF_MSG_LINK); | |
1340 | ||
1341 | pegasus->features = usb_dev_id[dev_index].private; | |
1342 | get_interrupt_interval(pegasus); | |
1343 | if (reset_mac(pegasus)) { | |
1344 | dev_err(&intf->dev, "can't reset MAC\n"); | |
1345 | res = -EIO; | |
1346 | goto out2; | |
1347 | } | |
1348 | set_ethernet_addr(pegasus); | |
1349 | fill_skb_pool(pegasus); | |
1350 | if (pegasus->features & PEGASUS_II) { | |
1351 | dev_info(&intf->dev, "setup Pegasus II specific registers\n"); | |
1352 | setup_pegasus_II(pegasus); | |
1353 | } | |
1354 | pegasus->phy = mii_phy_probe(pegasus); | |
1355 | if (pegasus->phy == 0xff) { | |
1356 | dev_warn(&intf->dev, "can't locate MII phy, using default\n"); | |
1357 | pegasus->phy = 1; | |
1358 | } | |
1359 | pegasus->mii.phy_id = pegasus->phy; | |
1360 | usb_set_intfdata(intf, pegasus); | |
1361 | SET_NETDEV_DEV(net, &intf->dev); | |
1362 | pegasus_reset_wol(net); | |
1363 | res = register_netdev(net); | |
1364 | if (res) | |
1365 | goto out3; | |
1366 | queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, | |
1367 | CARRIER_CHECK_DELAY); | |
1368 | ||
1369 | dev_info(&intf->dev, "%s, %s, %02x:%02x:%02x:%02x:%02x:%02x\n", | |
1370 | net->name, | |
1371 | usb_dev_id[dev_index].name, | |
1372 | net->dev_addr [0], net->dev_addr [1], | |
1373 | net->dev_addr [2], net->dev_addr [3], | |
1374 | net->dev_addr [4], net->dev_addr [5]); | |
1375 | return 0; | |
1376 | ||
1377 | out3: | |
1378 | usb_set_intfdata(intf, NULL); | |
1379 | free_skb_pool(pegasus); | |
1380 | out2: | |
1381 | free_all_urbs(pegasus); | |
1382 | out1: | |
1383 | free_netdev(net); | |
1384 | out: | |
1385 | usb_put_dev(dev); | |
1386 | return res; | |
1387 | } | |
1388 | ||
1389 | static void pegasus_disconnect(struct usb_interface *intf) | |
1390 | { | |
1391 | struct pegasus *pegasus = usb_get_intfdata(intf); | |
1392 | ||
1393 | usb_set_intfdata(intf, NULL); | |
1394 | if (!pegasus) { | |
1395 | dev_dbg(&intf->dev, "unregistering non-bound device?\n"); | |
1396 | return; | |
1397 | } | |
1398 | ||
1399 | pegasus->flags |= PEGASUS_UNPLUG; | |
1400 | cancel_delayed_work(&pegasus->carrier_check); | |
1401 | unregister_netdev(pegasus->net); | |
1402 | usb_put_dev(interface_to_usbdev(intf)); | |
a85a46f2 | 1403 | unlink_all_urbs(pegasus); |
1da177e4 LT |
1404 | free_all_urbs(pegasus); |
1405 | free_skb_pool(pegasus); | |
1406 | if (pegasus->rx_skb) | |
1407 | dev_kfree_skb(pegasus->rx_skb); | |
1408 | free_netdev(pegasus->net); | |
1409 | } | |
1410 | ||
27d72e85 | 1411 | static int pegasus_suspend (struct usb_interface *intf, pm_message_t message) |
1da177e4 LT |
1412 | { |
1413 | struct pegasus *pegasus = usb_get_intfdata(intf); | |
1414 | ||
1415 | netif_device_detach (pegasus->net); | |
7e713b82 | 1416 | cancel_delayed_work(&pegasus->carrier_check); |
27d72e85 | 1417 | if (netif_running(pegasus->net)) { |
27d72e85 DB |
1418 | usb_kill_urb(pegasus->rx_urb); |
1419 | usb_kill_urb(pegasus->intr_urb); | |
1420 | } | |
1da177e4 LT |
1421 | return 0; |
1422 | } | |
1423 | ||
1424 | static int pegasus_resume (struct usb_interface *intf) | |
1425 | { | |
1426 | struct pegasus *pegasus = usb_get_intfdata(intf); | |
1427 | ||
1428 | netif_device_attach (pegasus->net); | |
27d72e85 DB |
1429 | if (netif_running(pegasus->net)) { |
1430 | pegasus->rx_urb->status = 0; | |
1431 | pegasus->rx_urb->actual_length = 0; | |
9727d04a | 1432 | read_bulk_callback(pegasus->rx_urb, NULL); |
27d72e85 DB |
1433 | |
1434 | pegasus->intr_urb->status = 0; | |
1435 | pegasus->intr_urb->actual_length = 0; | |
9727d04a | 1436 | intr_callback(pegasus->intr_urb, NULL); |
27d72e85 | 1437 | } |
7e713b82 DB |
1438 | queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check, |
1439 | CARRIER_CHECK_DELAY); | |
1da177e4 LT |
1440 | return 0; |
1441 | } | |
1442 | ||
1443 | static struct usb_driver pegasus_driver = { | |
1444 | .name = driver_name, | |
1445 | .probe = pegasus_probe, | |
1446 | .disconnect = pegasus_disconnect, | |
1447 | .id_table = pegasus_ids, | |
1448 | .suspend = pegasus_suspend, | |
1449 | .resume = pegasus_resume, | |
1450 | }; | |
1451 | ||
a4f81a61 Y |
1452 | static void parse_id(char *id) |
1453 | { | |
1454 | unsigned int vendor_id=0, device_id=0, flags=0, i=0; | |
1455 | char *token, *name=NULL; | |
1456 | ||
1457 | if ((token = strsep(&id, ":")) != NULL) | |
1458 | name = token; | |
1459 | /* name now points to a null terminated string*/ | |
1460 | if ((token = strsep(&id, ":")) != NULL) | |
1461 | vendor_id = simple_strtoul(token, NULL, 16); | |
1462 | if ((token = strsep(&id, ":")) != NULL) | |
1463 | device_id = simple_strtoul(token, NULL, 16); | |
1464 | flags = simple_strtoul(id, NULL, 16); | |
1465 | pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", | |
1466 | driver_name, name, vendor_id, device_id, flags); | |
1467 | ||
1468 | if (vendor_id > 0x10000 || vendor_id == 0) | |
1469 | return; | |
1470 | if (device_id > 0x10000 || device_id == 0) | |
1471 | return; | |
1472 | ||
1473 | for (i=0; usb_dev_id[i].name; i++); | |
1474 | usb_dev_id[i].name = name; | |
1475 | usb_dev_id[i].vendor = vendor_id; | |
1476 | usb_dev_id[i].device = device_id; | |
1477 | usb_dev_id[i].private = flags; | |
1478 | pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
1479 | pegasus_ids[i].idVendor = vendor_id; | |
1480 | pegasus_ids[i].idProduct = device_id; | |
1481 | } | |
1482 | ||
1da177e4 LT |
1483 | static int __init pegasus_init(void) |
1484 | { | |
1485 | pr_info("%s: %s, " DRIVER_DESC "\n", driver_name, DRIVER_VERSION); | |
a4f81a61 Y |
1486 | if (devid) |
1487 | parse_id(devid); | |
1da177e4 LT |
1488 | pegasus_workqueue = create_singlethread_workqueue("pegasus"); |
1489 | if (!pegasus_workqueue) | |
1490 | return -ENOMEM; | |
1491 | return usb_register(&pegasus_driver); | |
1492 | } | |
1493 | ||
1494 | static void __exit pegasus_exit(void) | |
1495 | { | |
1496 | destroy_workqueue(pegasus_workqueue); | |
1497 | usb_deregister(&pegasus_driver); | |
1498 | } | |
1499 | ||
1500 | module_init(pegasus_init); | |
1501 | module_exit(pegasus_exit); |