1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright (c) 1999-2021 Petko Manolov (petkan@nucleusys.com) |
4 | * |
5 | */ |
6 | |
7 | #include <linux/sched.h> |
8 | #include <linux/slab.h> |
9 | #include <linux/init.h> |
10 | #include <linux/delay.h> |
11 | #include <linux/netdevice.h> |
12 | #include <linux/etherdevice.h> |
13 | #include <linux/ethtool.h> |
14 | #include <linux/mii.h> |
15 | #include <linux/usb.h> |
16 | #include <linux/module.h> |
17 | #include <asm/byteorder.h> |
18 | #include <linux/uaccess.h> |
19 | #include "pegasus.h" |
20 | |
21 | /* |
22 | * Version Information |
23 | */ |
24 | #define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>" |
25 | #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver" |
26 | |
27 | static const char driver_name[] = "pegasus" ; |
28 | |
29 | #undef PEGASUS_WRITE_EEPROM |
30 | #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \ |
31 | BMSR_100FULL | BMSR_ANEGCAPABLE) |
32 | #define CARRIER_CHECK_DELAY (2 * HZ) |
33 | |
34 | static bool loopback; |
35 | static bool mii_mode; |
36 | static char *devid; |
37 | |
38 | static struct usb_eth_dev usb_dev_id[] = { |
39 | #define PEGASUS_DEV(pn, vid, pid, flags) \ |
40 | {.name = pn, .vendor = vid, .device = pid, .private = flags}, |
41 | #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \ |
42 | PEGASUS_DEV(pn, vid, pid, flags) |
43 | #include "pegasus.h" |
44 | #undef PEGASUS_DEV |
45 | #undef PEGASUS_DEV_CLASS |
46 | {NULL, 0, 0, 0}, |
47 | {NULL, 0, 0, 0} |
48 | }; |
49 | |
50 | static struct usb_device_id pegasus_ids[] = { |
51 | #define PEGASUS_DEV(pn, vid, pid, flags) \ |
52 | {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid}, |
53 | /* |
54 | * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product |
55 | * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to |
56 | * ignore adaptors belonging to the "Wireless" class 0xE0. For this one |
57 | * case anyway, seeing as the pegasus is for "Wired" adaptors. |
58 | */ |
59 | #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \ |
60 | {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \ |
61 | .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass}, |
62 | #include "pegasus.h" |
63 | #undef PEGASUS_DEV |
64 | #undef PEGASUS_DEV_CLASS |
65 | {}, |
66 | {} |
67 | }; |
68 | |
69 | MODULE_AUTHOR(DRIVER_AUTHOR); |
70 | MODULE_DESCRIPTION(DRIVER_DESC); |
71 | MODULE_LICENSE("GPL" ); |
72 | module_param(loopback, bool, 0); |
73 | module_param(mii_mode, bool, 0); |
74 | module_param(devid, charp, 0); |
75 | MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)" ); |
76 | MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0" ); |
77 | MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'" ); |
78 | |
79 | /* use ethtool to change the level for any given device */ |
80 | static int msg_level = -1; |
81 | module_param(msg_level, int, 0); |
82 | MODULE_PARM_DESC(msg_level, "Override default message level" ); |
83 | |
84 | MODULE_DEVICE_TABLE(usb, pegasus_ids); |
85 | static const struct net_device_ops pegasus_netdev_ops; |
86 | |
87 | /*****/ |
88 | |
89 | static void async_ctrl_callback(struct urb *urb) |
90 | { |
91 | struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; |
92 | int status = urb->status; |
93 | |
94 | if (status < 0) |
95 | dev_dbg(&urb->dev->dev, "%s failed with %d" , __func__, status); |
96 | kfree(objp: req); |
97 | usb_free_urb(urb); |
98 | } |
99 | |
100 | static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data) |
101 | { |
102 | return usb_control_msg_recv(dev: pegasus->usb, endpoint: 0, PEGASUS_REQ_GET_REGS, |
103 | PEGASUS_REQT_READ, value: 0, index: indx, data, size, |
104 | timeout: 1000, GFP_NOIO); |
105 | } |
106 | |
107 | static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size, |
108 | const void *data) |
109 | { |
110 | int ret; |
111 | |
112 | ret = usb_control_msg_send(dev: pegasus->usb, endpoint: 0, PEGASUS_REQ_SET_REGS, |
113 | PEGASUS_REQT_WRITE, value: 0, index: indx, data, size, |
114 | timeout: 1000, GFP_NOIO); |
115 | if (ret < 0) |
116 | netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n" , __func__, ret); |
117 | |
118 | return ret; |
119 | } |
120 | |
121 | /* |
122 | * There is only one way to write to a single ADM8511 register and this is via |
123 | * specific control request. 'data' is ignored by the device, but it is here to |
124 | * not break the API. |
125 | */ |
126 | static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data) |
127 | { |
128 | void *buf = &data; |
129 | int ret; |
130 | |
131 | ret = usb_control_msg_send(dev: pegasus->usb, endpoint: 0, PEGASUS_REQ_SET_REG, |
132 | PEGASUS_REQT_WRITE, value: data, index: indx, data: buf, size: 1, |
133 | timeout: 1000, GFP_NOIO); |
134 | if (ret < 0) |
135 | netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n" , __func__, ret); |
136 | |
137 | return ret; |
138 | } |
139 | |
140 | static int update_eth_regs_async(pegasus_t *pegasus) |
141 | { |
142 | int ret = -ENOMEM; |
143 | struct urb *async_urb; |
144 | struct usb_ctrlrequest *req; |
145 | |
146 | req = kmalloc(size: sizeof(struct usb_ctrlrequest), GFP_ATOMIC); |
147 | if (req == NULL) |
148 | return ret; |
149 | |
150 | async_urb = usb_alloc_urb(iso_packets: 0, GFP_ATOMIC); |
151 | if (async_urb == NULL) { |
152 | kfree(objp: req); |
153 | return ret; |
154 | } |
155 | req->bRequestType = PEGASUS_REQT_WRITE; |
156 | req->bRequest = PEGASUS_REQ_SET_REGS; |
157 | req->wValue = cpu_to_le16(0); |
158 | req->wIndex = cpu_to_le16(EthCtrl0); |
159 | req->wLength = cpu_to_le16(3); |
160 | |
161 | usb_fill_control_urb(urb: async_urb, dev: pegasus->usb, |
162 | usb_sndctrlpipe(pegasus->usb, 0), setup_packet: (void *)req, |
163 | transfer_buffer: pegasus->eth_regs, buffer_length: 3, complete_fn: async_ctrl_callback, context: req); |
164 | |
165 | ret = usb_submit_urb(urb: async_urb, GFP_ATOMIC); |
166 | if (ret) { |
167 | if (ret == -ENODEV) |
168 | netif_device_detach(dev: pegasus->net); |
169 | netif_err(pegasus, drv, pegasus->net, |
170 | "%s returned %d\n" , __func__, ret); |
171 | } |
172 | return ret; |
173 | } |
174 | |
175 | static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd) |
176 | { |
177 | int i, ret; |
178 | __le16 regdi; |
179 | __u8 data[4] = { phy, 0, 0, indx }; |
180 | |
181 | if (cmd & PHY_WRITE) { |
182 | __le16 *t = (__le16 *) & data[1]; |
183 | *t = cpu_to_le16(*regd); |
184 | } |
185 | set_register(pegasus: p, indx: PhyCtrl, data: 0); |
186 | set_registers(pegasus: p, indx: PhyAddr, size: sizeof(data), data); |
187 | set_register(pegasus: p, indx: PhyCtrl, data: (indx | cmd)); |
188 | for (i = 0; i < REG_TIMEOUT; i++) { |
189 | ret = get_registers(pegasus: p, indx: PhyCtrl, size: 1, data); |
190 | if (ret < 0) |
191 | goto fail; |
192 | if (data[0] & PHY_DONE) |
193 | break; |
194 | } |
195 | if (i >= REG_TIMEOUT) { |
196 | ret = -ETIMEDOUT; |
197 | goto fail; |
198 | } |
199 | if (cmd & PHY_READ) { |
200 | ret = get_registers(pegasus: p, indx: PhyData, size: 2, data: ®di); |
201 | if (ret < 0) |
202 | goto fail; |
203 | *regd = le16_to_cpu(regdi); |
204 | } |
205 | return 0; |
206 | fail: |
207 | netif_dbg(p, drv, p->net, "%s failed\n" , __func__); |
208 | return ret; |
209 | } |
210 | |
211 | /* Returns non-negative int on success, error on failure */ |
212 | static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd) |
213 | { |
214 | return __mii_op(p: pegasus, phy, indx, regd, PHY_READ); |
215 | } |
216 | |
217 | /* Returns zero on success, error on failure */ |
218 | static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd) |
219 | { |
220 | return __mii_op(p: pegasus, phy, indx, regd, PHY_WRITE); |
221 | } |
222 | |
223 | static int mdio_read(struct net_device *dev, int phy_id, int loc) |
224 | { |
225 | pegasus_t *pegasus = netdev_priv(dev); |
226 | int ret; |
227 | u16 res; |
228 | |
229 | ret = read_mii_word(pegasus, phy: phy_id, indx: loc, regd: &res); |
230 | if (ret < 0) |
231 | return ret; |
232 | |
233 | return (int)res; |
234 | } |
235 | |
236 | static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) |
237 | { |
238 | pegasus_t *pegasus = netdev_priv(dev); |
239 | u16 data = val; |
240 | |
241 | write_mii_word(pegasus, phy: phy_id, indx: loc, regd: &data); |
242 | } |
243 | |
244 | static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata) |
245 | { |
246 | int ret, i; |
247 | __le16 retdatai; |
248 | __u8 tmp = 0; |
249 | |
250 | set_register(pegasus, indx: EpromCtrl, data: 0); |
251 | set_register(pegasus, indx: EpromOffset, data: index); |
252 | set_register(pegasus, indx: EpromCtrl, EPROM_READ); |
253 | |
254 | for (i = 0; i < REG_TIMEOUT; i++) { |
255 | ret = get_registers(pegasus, indx: EpromCtrl, size: 1, data: &tmp); |
256 | if (ret < 0) |
257 | goto fail; |
258 | if (tmp & EPROM_DONE) |
259 | break; |
260 | } |
261 | if (i >= REG_TIMEOUT) { |
262 | ret = -ETIMEDOUT; |
263 | goto fail; |
264 | } |
265 | |
266 | ret = get_registers(pegasus, indx: EpromData, size: 2, data: &retdatai); |
267 | if (ret < 0) |
268 | goto fail; |
269 | *retdata = le16_to_cpu(retdatai); |
270 | return ret; |
271 | |
272 | fail: |
273 | netif_dbg(pegasus, drv, pegasus->net, "%s failed\n" , __func__); |
274 | return ret; |
275 | } |
276 | |
277 | #ifdef PEGASUS_WRITE_EEPROM |
278 | static inline void enable_eprom_write(pegasus_t *pegasus) |
279 | { |
280 | __u8 tmp; |
281 | |
282 | get_registers(pegasus, EthCtrl2, 1, &tmp); |
283 | set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); |
284 | } |
285 | |
286 | static inline void disable_eprom_write(pegasus_t *pegasus) |
287 | { |
288 | __u8 tmp; |
289 | |
290 | get_registers(pegasus, EthCtrl2, 1, &tmp); |
291 | set_register(pegasus, EpromCtrl, 0); |
292 | set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); |
293 | } |
294 | |
295 | static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data) |
296 | { |
297 | int i; |
298 | __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; |
299 | int ret; |
300 | __le16 le_data = cpu_to_le16(data); |
301 | |
302 | set_registers(pegasus, EpromOffset, 4, d); |
303 | enable_eprom_write(pegasus); |
304 | set_register(pegasus, EpromOffset, index); |
305 | set_registers(pegasus, EpromData, 2, &le_data); |
306 | set_register(pegasus, EpromCtrl, EPROM_WRITE); |
307 | |
308 | for (i = 0; i < REG_TIMEOUT; i++) { |
309 | ret = get_registers(pegasus, EpromCtrl, 1, &tmp); |
310 | if (ret == -ESHUTDOWN) |
311 | goto fail; |
312 | if (tmp & EPROM_DONE) |
313 | break; |
314 | } |
315 | disable_eprom_write(pegasus); |
316 | if (i >= REG_TIMEOUT) |
317 | goto fail; |
318 | |
319 | return ret; |
320 | |
321 | fail: |
322 | netif_dbg(pegasus, drv, pegasus->net, "%s failed\n" , __func__); |
323 | return -ETIMEDOUT; |
324 | } |
325 | #endif /* PEGASUS_WRITE_EEPROM */ |
326 | |
327 | static inline int get_node_id(pegasus_t *pegasus, u8 *id) |
328 | { |
329 | int i, ret; |
330 | u16 w16; |
331 | |
332 | for (i = 0; i < 3; i++) { |
333 | ret = read_eprom_word(pegasus, index: i, retdata: &w16); |
334 | if (ret < 0) |
335 | return ret; |
336 | ((__le16 *) id)[i] = cpu_to_le16(w16); |
337 | } |
338 | |
339 | return 0; |
340 | } |
341 | |
342 | static void set_ethernet_addr(pegasus_t *pegasus) |
343 | { |
344 | int ret; |
345 | u8 node_id[6]; |
346 | |
347 | if (pegasus->features & PEGASUS_II) { |
348 | ret = get_registers(pegasus, indx: 0x10, size: sizeof(node_id), data: node_id); |
349 | if (ret < 0) |
350 | goto err; |
351 | } else { |
352 | ret = get_node_id(pegasus, id: node_id); |
353 | if (ret < 0) |
354 | goto err; |
355 | ret = set_registers(pegasus, indx: EthID, size: sizeof(node_id), data: node_id); |
356 | if (ret < 0) |
357 | goto err; |
358 | } |
359 | |
360 | eth_hw_addr_set(dev: pegasus->net, addr: node_id); |
361 | |
362 | return; |
363 | err: |
364 | eth_hw_addr_random(dev: pegasus->net); |
365 | netif_dbg(pegasus, drv, pegasus->net, "software assigned MAC address.\n" ); |
366 | |
367 | return; |
368 | } |
369 | |
370 | static inline int reset_mac(pegasus_t *pegasus) |
371 | { |
372 | int ret, i; |
373 | __u8 data = 0x8; |
374 | |
375 | set_register(pegasus, indx: EthCtrl1, data); |
376 | for (i = 0; i < REG_TIMEOUT; i++) { |
377 | ret = get_registers(pegasus, indx: EthCtrl1, size: 1, data: &data); |
378 | if (ret < 0) |
379 | goto fail; |
380 | if (~data & 0x08) { |
381 | if (loopback) |
382 | break; |
383 | if (mii_mode && (pegasus->features & HAS_HOME_PNA)) |
384 | set_register(pegasus, indx: Gpio1, data: 0x34); |
385 | else |
386 | set_register(pegasus, indx: Gpio1, data: 0x26); |
387 | set_register(pegasus, indx: Gpio0, data: pegasus->features); |
388 | set_register(pegasus, indx: Gpio0, DEFAULT_GPIO_SET); |
389 | break; |
390 | } |
391 | } |
392 | if (i == REG_TIMEOUT) |
393 | return -ETIMEDOUT; |
394 | |
395 | if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || |
396 | usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { |
397 | set_register(pegasus, indx: Gpio0, data: 0x24); |
398 | set_register(pegasus, indx: Gpio0, data: 0x26); |
399 | } |
400 | if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) { |
401 | __u16 auxmode; |
402 | ret = read_mii_word(pegasus, phy: 3, indx: 0x1b, regd: &auxmode); |
403 | if (ret < 0) |
404 | goto fail; |
405 | auxmode |= 4; |
406 | write_mii_word(pegasus, phy: 3, indx: 0x1b, regd: &auxmode); |
407 | } |
408 | |
409 | return 0; |
410 | fail: |
411 | netif_dbg(pegasus, drv, pegasus->net, "%s failed\n" , __func__); |
412 | return ret; |
413 | } |
414 | |
415 | static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) |
416 | { |
417 | pegasus_t *pegasus = netdev_priv(dev); |
418 | int ret; |
419 | __u16 linkpart; |
420 | __u8 data[4]; |
421 | |
422 | ret = read_mii_word(pegasus, phy: pegasus->phy, MII_LPA, regd: &linkpart); |
423 | if (ret < 0) |
424 | goto fail; |
425 | data[0] = 0xc8; /* TX & RX enable, append status, no CRC */ |
426 | data[1] = 0; |
427 | if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) |
428 | data[1] |= 0x20; /* set full duplex */ |
429 | if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) |
430 | data[1] |= 0x10; /* set 100 Mbps */ |
431 | if (mii_mode) |
432 | data[1] = 0; |
433 | data[2] = loopback ? 0x09 : 0x01; |
434 | |
435 | memcpy(pegasus->eth_regs, data, sizeof(data)); |
436 | ret = set_registers(pegasus, indx: EthCtrl0, size: 3, data); |
437 | |
438 | if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS || |
439 | usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 || |
440 | usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) { |
441 | u16 auxmode; |
442 | ret = read_mii_word(pegasus, phy: 0, indx: 0x1b, regd: &auxmode); |
443 | if (ret < 0) |
444 | goto fail; |
445 | auxmode |= 4; |
446 | write_mii_word(pegasus, phy: 0, indx: 0x1b, regd: &auxmode); |
447 | } |
448 | |
449 | return ret; |
450 | fail: |
451 | netif_dbg(pegasus, drv, pegasus->net, "%s failed\n" , __func__); |
452 | return ret; |
453 | } |
454 | |
455 | static void read_bulk_callback(struct urb *urb) |
456 | { |
457 | pegasus_t *pegasus = urb->context; |
458 | struct net_device *net; |
459 | u8 *buf = urb->transfer_buffer; |
460 | int rx_status, count = urb->actual_length; |
461 | int status = urb->status; |
462 | __u16 pkt_len; |
463 | |
464 | if (!pegasus) |
465 | return; |
466 | |
467 | net = pegasus->net; |
468 | if (!netif_device_present(dev: net) || !netif_running(dev: net)) |
469 | return; |
470 | |
471 | switch (status) { |
472 | case 0: |
473 | break; |
474 | case -ETIME: |
475 | netif_dbg(pegasus, rx_err, net, "reset MAC\n" ); |
476 | pegasus->flags &= ~PEGASUS_RX_BUSY; |
477 | break; |
478 | case -EPIPE: /* stall, or disconnect from TT */ |
479 | /* FIXME schedule work to clear the halt */ |
480 | netif_warn(pegasus, rx_err, net, "no rx stall recovery\n" ); |
481 | return; |
482 | case -ENOENT: |
483 | case -ECONNRESET: |
484 | case -ESHUTDOWN: |
485 | netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n" , status); |
486 | return; |
487 | default: |
488 | netif_dbg(pegasus, rx_err, net, "RX status %d\n" , status); |
489 | goto goon; |
490 | } |
491 | |
492 | if (count < 4) |
493 | goto goon; |
494 | |
495 | rx_status = buf[count - 2]; |
496 | if (rx_status & 0x1c) { |
497 | netif_dbg(pegasus, rx_err, net, |
498 | "RX packet error %x\n" , rx_status); |
499 | net->stats.rx_errors++; |
500 | if (rx_status & 0x04) /* runt */ |
501 | net->stats.rx_length_errors++; |
502 | if (rx_status & 0x08) |
503 | net->stats.rx_crc_errors++; |
504 | if (rx_status & 0x10) /* extra bits */ |
505 | net->stats.rx_frame_errors++; |
506 | goto goon; |
507 | } |
508 | if (pegasus->chip == 0x8513) { |
509 | pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); |
510 | pkt_len &= 0x0fff; |
511 | pegasus->rx_skb->data += 2; |
512 | } else { |
513 | pkt_len = buf[count - 3] << 8; |
514 | pkt_len += buf[count - 4]; |
515 | pkt_len &= 0xfff; |
516 | pkt_len -= 4; |
517 | } |
518 | |
519 | /* |
520 | * If the packet is unreasonably long, quietly drop it rather than |
521 | * kernel panicing by calling skb_put. |
522 | */ |
523 | if (pkt_len > PEGASUS_MTU) |
524 | goto goon; |
525 | |
526 | /* |
527 | * at this point we are sure pegasus->rx_skb != NULL |
528 | * so we go ahead and pass up the packet. |
529 | */ |
530 | skb_put(skb: pegasus->rx_skb, len: pkt_len); |
531 | pegasus->rx_skb->protocol = eth_type_trans(skb: pegasus->rx_skb, dev: net); |
532 | netif_rx(skb: pegasus->rx_skb); |
533 | net->stats.rx_packets++; |
534 | net->stats.rx_bytes += pkt_len; |
535 | |
536 | if (pegasus->flags & PEGASUS_UNPLUG) |
537 | return; |
538 | |
539 | pegasus->rx_skb = __netdev_alloc_skb_ip_align(dev: pegasus->net, PEGASUS_MTU, |
540 | GFP_ATOMIC); |
541 | |
542 | if (pegasus->rx_skb == NULL) |
543 | goto tl_sched; |
544 | goon: |
545 | usb_fill_bulk_urb(urb: pegasus->rx_urb, dev: pegasus->usb, |
546 | usb_rcvbulkpipe(pegasus->usb, 1), |
547 | transfer_buffer: pegasus->rx_skb->data, PEGASUS_MTU, |
548 | complete_fn: read_bulk_callback, context: pegasus); |
549 | rx_status = usb_submit_urb(urb: pegasus->rx_urb, GFP_ATOMIC); |
550 | if (rx_status == -ENODEV) |
551 | netif_device_detach(dev: pegasus->net); |
552 | else if (rx_status) { |
553 | pegasus->flags |= PEGASUS_RX_URB_FAIL; |
554 | goto tl_sched; |
555 | } else { |
556 | pegasus->flags &= ~PEGASUS_RX_URB_FAIL; |
557 | } |
558 | |
559 | return; |
560 | |
561 | tl_sched: |
562 | tasklet_schedule(t: &pegasus->rx_tl); |
563 | } |
564 | |
565 | static void rx_fixup(struct tasklet_struct *t) |
566 | { |
567 | pegasus_t *pegasus = from_tasklet(pegasus, t, rx_tl); |
568 | int status; |
569 | |
570 | if (pegasus->flags & PEGASUS_UNPLUG) |
571 | return; |
572 | |
573 | if (pegasus->flags & PEGASUS_RX_URB_FAIL) |
574 | if (pegasus->rx_skb) |
575 | goto try_again; |
576 | if (pegasus->rx_skb == NULL) |
577 | pegasus->rx_skb = __netdev_alloc_skb_ip_align(dev: pegasus->net, |
578 | PEGASUS_MTU, |
579 | GFP_ATOMIC); |
580 | if (pegasus->rx_skb == NULL) { |
581 | netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n" ); |
582 | tasklet_schedule(t: &pegasus->rx_tl); |
583 | return; |
584 | } |
585 | usb_fill_bulk_urb(urb: pegasus->rx_urb, dev: pegasus->usb, |
586 | usb_rcvbulkpipe(pegasus->usb, 1), |
587 | transfer_buffer: pegasus->rx_skb->data, PEGASUS_MTU, |
588 | complete_fn: read_bulk_callback, context: pegasus); |
589 | try_again: |
590 | status = usb_submit_urb(urb: pegasus->rx_urb, GFP_ATOMIC); |
591 | if (status == -ENODEV) |
592 | netif_device_detach(dev: pegasus->net); |
593 | else if (status) { |
594 | pegasus->flags |= PEGASUS_RX_URB_FAIL; |
595 | tasklet_schedule(t: &pegasus->rx_tl); |
596 | } else { |
597 | pegasus->flags &= ~PEGASUS_RX_URB_FAIL; |
598 | } |
599 | } |
600 | |
601 | static void write_bulk_callback(struct urb *urb) |
602 | { |
603 | pegasus_t *pegasus = urb->context; |
604 | struct net_device *net; |
605 | int status = urb->status; |
606 | |
607 | if (!pegasus) |
608 | return; |
609 | |
610 | net = pegasus->net; |
611 | |
612 | if (!netif_device_present(dev: net) || !netif_running(dev: net)) |
613 | return; |
614 | |
615 | switch (status) { |
616 | case -EPIPE: |
617 | /* FIXME schedule_work() to clear the tx halt */ |
618 | netif_stop_queue(dev: net); |
619 | netif_warn(pegasus, tx_err, net, "no tx stall recovery\n" ); |
620 | return; |
621 | case -ENOENT: |
622 | case -ECONNRESET: |
623 | case -ESHUTDOWN: |
624 | netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n" , status); |
625 | return; |
626 | default: |
627 | netif_info(pegasus, tx_err, net, "TX status %d\n" , status); |
628 | fallthrough; |
629 | case 0: |
630 | break; |
631 | } |
632 | |
633 | netif_trans_update(dev: net); /* prevent tx timeout */ |
634 | netif_wake_queue(dev: net); |
635 | } |
636 | |
637 | static void intr_callback(struct urb *urb) |
638 | { |
639 | pegasus_t *pegasus = urb->context; |
640 | struct net_device *net; |
641 | int res, status = urb->status; |
642 | |
643 | if (!pegasus) |
644 | return; |
645 | net = pegasus->net; |
646 | |
647 | switch (status) { |
648 | case 0: |
649 | break; |
650 | case -ECONNRESET: /* unlink */ |
651 | case -ENOENT: |
652 | case -ESHUTDOWN: |
653 | return; |
654 | default: |
655 | /* some Pegasus-I products report LOTS of data |
656 | * toggle errors... avoid log spamming |
657 | */ |
658 | netif_dbg(pegasus, timer, net, "intr status %d\n" , status); |
659 | } |
660 | |
661 | if (urb->actual_length >= 6) { |
662 | u8 *d = urb->transfer_buffer; |
663 | |
664 | /* byte 0 == tx_status1, reg 2B */ |
665 | if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL |
666 | |LATE_COL|JABBER_TIMEOUT)) { |
667 | net->stats.tx_errors++; |
668 | if (d[0] & TX_UNDERRUN) |
669 | net->stats.tx_fifo_errors++; |
670 | if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) |
671 | net->stats.tx_aborted_errors++; |
672 | if (d[0] & LATE_COL) |
673 | net->stats.tx_window_errors++; |
674 | } |
675 | |
676 | /* d[5].LINK_STATUS lies on some adapters. |
677 | * d[0].NO_CARRIER kicks in only with failed TX. |
678 | * ... so monitoring with MII may be safest. |
679 | */ |
680 | |
681 | /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ |
682 | net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; |
683 | } |
684 | |
685 | res = usb_submit_urb(urb, GFP_ATOMIC); |
686 | if (res == -ENODEV) |
687 | netif_device_detach(dev: pegasus->net); |
688 | if (res) |
689 | netif_err(pegasus, timer, net, |
690 | "can't resubmit interrupt urb, %d\n" , res); |
691 | } |
692 | |
693 | static void pegasus_tx_timeout(struct net_device *net, unsigned int txqueue) |
694 | { |
695 | pegasus_t *pegasus = netdev_priv(dev: net); |
696 | netif_warn(pegasus, timer, net, "tx timeout\n" ); |
697 | usb_unlink_urb(urb: pegasus->tx_urb); |
698 | net->stats.tx_errors++; |
699 | } |
700 | |
701 | static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb, |
702 | struct net_device *net) |
703 | { |
704 | pegasus_t *pegasus = netdev_priv(dev: net); |
705 | int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; |
706 | int res; |
707 | __u16 l16 = skb->len; |
708 | |
709 | netif_stop_queue(dev: net); |
710 | |
711 | ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); |
712 | skb_copy_from_linear_data(skb, to: pegasus->tx_buff + 2, len: skb->len); |
713 | usb_fill_bulk_urb(urb: pegasus->tx_urb, dev: pegasus->usb, |
714 | usb_sndbulkpipe(pegasus->usb, 2), |
715 | transfer_buffer: pegasus->tx_buff, buffer_length: count, |
716 | complete_fn: write_bulk_callback, context: pegasus); |
717 | if ((res = usb_submit_urb(urb: pegasus->tx_urb, GFP_ATOMIC))) { |
718 | netif_warn(pegasus, tx_err, net, "fail tx, %d\n" , res); |
719 | switch (res) { |
720 | case -EPIPE: /* stall, or disconnect from TT */ |
721 | /* cleanup should already have been scheduled */ |
722 | break; |
723 | case -ENODEV: /* disconnect() upcoming */ |
724 | case -EPERM: |
725 | netif_device_detach(dev: pegasus->net); |
726 | break; |
727 | default: |
728 | net->stats.tx_errors++; |
729 | netif_start_queue(dev: net); |
730 | } |
731 | } else { |
732 | net->stats.tx_packets++; |
733 | net->stats.tx_bytes += skb->len; |
734 | } |
735 | dev_kfree_skb(skb); |
736 | |
737 | return NETDEV_TX_OK; |
738 | } |
739 | |
740 | static inline void disable_net_traffic(pegasus_t *pegasus) |
741 | { |
742 | __le16 tmp = cpu_to_le16(0); |
743 | |
744 | set_registers(pegasus, indx: EthCtrl0, size: sizeof(tmp), data: &tmp); |
745 | } |
746 | |
747 | static inline int get_interrupt_interval(pegasus_t *pegasus) |
748 | { |
749 | u16 data; |
750 | u8 interval; |
751 | int ret; |
752 | |
753 | ret = read_eprom_word(pegasus, index: 4, retdata: &data); |
754 | if (ret < 0) |
755 | return ret; |
756 | |
757 | interval = data >> 8; |
758 | if (pegasus->usb->speed != USB_SPEED_HIGH) { |
759 | if (interval < 0x80) { |
760 | netif_info(pegasus, timer, pegasus->net, |
761 | "intr interval changed from %ums to %ums\n" , |
762 | interval, 0x80); |
763 | interval = 0x80; |
764 | data = (data & 0x00FF) | ((u16)interval << 8); |
765 | #ifdef PEGASUS_WRITE_EEPROM |
766 | write_eprom_word(pegasus, 4, data); |
767 | #endif |
768 | } |
769 | } |
770 | pegasus->intr_interval = interval; |
771 | |
772 | return 0; |
773 | } |
774 | |
775 | static void set_carrier(struct net_device *net) |
776 | { |
777 | pegasus_t *pegasus = netdev_priv(dev: net); |
778 | u16 tmp; |
779 | |
780 | if (read_mii_word(pegasus, phy: pegasus->phy, MII_BMSR, regd: &tmp)) |
781 | return; |
782 | |
783 | if (tmp & BMSR_LSTATUS) |
784 | netif_carrier_on(dev: net); |
785 | else |
786 | netif_carrier_off(dev: net); |
787 | } |
788 | |
789 | static void free_all_urbs(pegasus_t *pegasus) |
790 | { |
791 | usb_free_urb(urb: pegasus->intr_urb); |
792 | usb_free_urb(urb: pegasus->tx_urb); |
793 | usb_free_urb(urb: pegasus->rx_urb); |
794 | } |
795 | |
796 | static void unlink_all_urbs(pegasus_t *pegasus) |
797 | { |
798 | usb_kill_urb(urb: pegasus->intr_urb); |
799 | usb_kill_urb(urb: pegasus->tx_urb); |
800 | usb_kill_urb(urb: pegasus->rx_urb); |
801 | } |
802 | |
803 | static int alloc_urbs(pegasus_t *pegasus) |
804 | { |
805 | int res = -ENOMEM; |
806 | |
807 | pegasus->rx_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
808 | if (!pegasus->rx_urb) { |
809 | return res; |
810 | } |
811 | pegasus->tx_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
812 | if (!pegasus->tx_urb) { |
813 | usb_free_urb(urb: pegasus->rx_urb); |
814 | return res; |
815 | } |
816 | pegasus->intr_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
817 | if (!pegasus->intr_urb) { |
818 | usb_free_urb(urb: pegasus->tx_urb); |
819 | usb_free_urb(urb: pegasus->rx_urb); |
820 | return res; |
821 | } |
822 | |
823 | return 0; |
824 | } |
825 | |
826 | static int pegasus_open(struct net_device *net) |
827 | { |
828 | pegasus_t *pegasus = netdev_priv(dev: net); |
829 | int res=-ENOMEM; |
830 | |
831 | if (pegasus->rx_skb == NULL) |
832 | pegasus->rx_skb = __netdev_alloc_skb_ip_align(dev: pegasus->net, |
833 | PEGASUS_MTU, |
834 | GFP_KERNEL); |
835 | if (!pegasus->rx_skb) |
836 | goto exit; |
837 | |
838 | set_registers(pegasus, indx: EthID, size: 6, data: net->dev_addr); |
839 | |
840 | usb_fill_bulk_urb(urb: pegasus->rx_urb, dev: pegasus->usb, |
841 | usb_rcvbulkpipe(pegasus->usb, 1), |
842 | transfer_buffer: pegasus->rx_skb->data, PEGASUS_MTU, |
843 | complete_fn: read_bulk_callback, context: pegasus); |
844 | if ((res = usb_submit_urb(urb: pegasus->rx_urb, GFP_KERNEL))) { |
845 | if (res == -ENODEV) |
846 | netif_device_detach(dev: pegasus->net); |
847 | netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n" , res); |
848 | goto exit; |
849 | } |
850 | |
851 | usb_fill_int_urb(urb: pegasus->intr_urb, dev: pegasus->usb, |
852 | usb_rcvintpipe(pegasus->usb, 3), |
853 | transfer_buffer: pegasus->intr_buff, buffer_length: sizeof(pegasus->intr_buff), |
854 | complete_fn: intr_callback, context: pegasus, interval: pegasus->intr_interval); |
855 | if ((res = usb_submit_urb(urb: pegasus->intr_urb, GFP_KERNEL))) { |
856 | if (res == -ENODEV) |
857 | netif_device_detach(dev: pegasus->net); |
858 | netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n" , res); |
859 | usb_kill_urb(urb: pegasus->rx_urb); |
860 | goto exit; |
861 | } |
862 | res = enable_net_traffic(dev: net, usb: pegasus->usb); |
863 | if (res < 0) { |
864 | netif_dbg(pegasus, ifup, net, |
865 | "can't enable_net_traffic() - %d\n" , res); |
866 | res = -EIO; |
867 | usb_kill_urb(urb: pegasus->rx_urb); |
868 | usb_kill_urb(urb: pegasus->intr_urb); |
869 | goto exit; |
870 | } |
871 | set_carrier(net); |
872 | netif_start_queue(dev: net); |
873 | netif_dbg(pegasus, ifup, net, "open\n" ); |
874 | res = 0; |
875 | exit: |
876 | return res; |
877 | } |
878 | |
879 | static int pegasus_close(struct net_device *net) |
880 | { |
881 | pegasus_t *pegasus = netdev_priv(dev: net); |
882 | |
883 | netif_stop_queue(dev: net); |
884 | if (!(pegasus->flags & PEGASUS_UNPLUG)) |
885 | disable_net_traffic(pegasus); |
886 | tasklet_kill(t: &pegasus->rx_tl); |
887 | unlink_all_urbs(pegasus); |
888 | |
889 | return 0; |
890 | } |
891 | |
892 | static void pegasus_get_drvinfo(struct net_device *dev, |
893 | struct ethtool_drvinfo *info) |
894 | { |
895 | pegasus_t *pegasus = netdev_priv(dev); |
896 | |
897 | strscpy(info->driver, driver_name, sizeof(info->driver)); |
898 | usb_make_path(dev: pegasus->usb, buf: info->bus_info, size: sizeof(info->bus_info)); |
899 | } |
900 | |
901 | /* also handles three patterns of some kind in hardware */ |
902 | #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) |
903 | |
904 | static void |
905 | pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
906 | { |
907 | pegasus_t *pegasus = netdev_priv(dev); |
908 | |
909 | wol->supported = WAKE_MAGIC | WAKE_PHY; |
910 | wol->wolopts = pegasus->wolopts; |
911 | } |
912 | |
913 | static int |
914 | pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
915 | { |
916 | pegasus_t *pegasus = netdev_priv(dev); |
917 | u8 reg78 = 0x04; |
918 | int ret; |
919 | |
920 | if (wol->wolopts & ~WOL_SUPPORTED) |
921 | return -EINVAL; |
922 | |
923 | if (wol->wolopts & WAKE_MAGIC) |
924 | reg78 |= 0x80; |
925 | if (wol->wolopts & WAKE_PHY) |
926 | reg78 |= 0x40; |
927 | /* FIXME this 0x10 bit still needs to get set in the chip... */ |
928 | if (wol->wolopts) |
929 | pegasus->eth_regs[0] |= 0x10; |
930 | else |
931 | pegasus->eth_regs[0] &= ~0x10; |
932 | pegasus->wolopts = wol->wolopts; |
933 | |
934 | ret = set_register(pegasus, indx: WakeupControl, data: reg78); |
935 | if (!ret) |
936 | ret = device_set_wakeup_enable(dev: &pegasus->usb->dev, |
937 | enable: wol->wolopts); |
938 | return ret; |
939 | } |
940 | |
941 | static inline void pegasus_reset_wol(struct net_device *dev) |
942 | { |
943 | struct ethtool_wolinfo wol; |
944 | |
945 | memset(&wol, 0, sizeof wol); |
946 | (void) pegasus_set_wol(dev, wol: &wol); |
947 | } |
948 | |
949 | static int |
950 | pegasus_get_link_ksettings(struct net_device *dev, |
951 | struct ethtool_link_ksettings *ecmd) |
952 | { |
953 | pegasus_t *pegasus; |
954 | |
955 | pegasus = netdev_priv(dev); |
956 | mii_ethtool_get_link_ksettings(mii: &pegasus->mii, cmd: ecmd); |
957 | return 0; |
958 | } |
959 | |
960 | static int |
961 | pegasus_set_link_ksettings(struct net_device *dev, |
962 | const struct ethtool_link_ksettings *ecmd) |
963 | { |
964 | pegasus_t *pegasus = netdev_priv(dev); |
965 | return mii_ethtool_set_link_ksettings(mii: &pegasus->mii, cmd: ecmd); |
966 | } |
967 | |
968 | static int pegasus_nway_reset(struct net_device *dev) |
969 | { |
970 | pegasus_t *pegasus = netdev_priv(dev); |
971 | return mii_nway_restart(mii: &pegasus->mii); |
972 | } |
973 | |
974 | static u32 pegasus_get_link(struct net_device *dev) |
975 | { |
976 | pegasus_t *pegasus = netdev_priv(dev); |
977 | return mii_link_ok(mii: &pegasus->mii); |
978 | } |
979 | |
980 | static u32 pegasus_get_msglevel(struct net_device *dev) |
981 | { |
982 | pegasus_t *pegasus = netdev_priv(dev); |
983 | return pegasus->msg_enable; |
984 | } |
985 | |
986 | static void pegasus_set_msglevel(struct net_device *dev, u32 v) |
987 | { |
988 | pegasus_t *pegasus = netdev_priv(dev); |
989 | pegasus->msg_enable = v; |
990 | } |
991 | |
992 | static const struct ethtool_ops ops = { |
993 | .get_drvinfo = pegasus_get_drvinfo, |
994 | .nway_reset = pegasus_nway_reset, |
995 | .get_link = pegasus_get_link, |
996 | .get_msglevel = pegasus_get_msglevel, |
997 | .set_msglevel = pegasus_set_msglevel, |
998 | .get_wol = pegasus_get_wol, |
999 | .set_wol = pegasus_set_wol, |
1000 | .get_link_ksettings = pegasus_get_link_ksettings, |
1001 | .set_link_ksettings = pegasus_set_link_ksettings, |
1002 | }; |
1003 | |
1004 | static int pegasus_siocdevprivate(struct net_device *net, struct ifreq *rq, |
1005 | void __user *udata, int cmd) |
1006 | { |
1007 | __u16 *data = (__u16 *) &rq->ifr_ifru; |
1008 | pegasus_t *pegasus = netdev_priv(dev: net); |
1009 | int res; |
1010 | |
1011 | switch (cmd) { |
1012 | case SIOCDEVPRIVATE: |
1013 | data[0] = pegasus->phy; |
1014 | fallthrough; |
1015 | case SIOCDEVPRIVATE + 1: |
1016 | res = read_mii_word(pegasus, phy: data[0], indx: data[1] & 0x1f, regd: &data[3]); |
1017 | break; |
1018 | case SIOCDEVPRIVATE + 2: |
1019 | if (!capable(CAP_NET_ADMIN)) |
1020 | return -EPERM; |
1021 | write_mii_word(pegasus, phy: pegasus->phy, indx: data[1] & 0x1f, regd: &data[2]); |
1022 | res = 0; |
1023 | break; |
1024 | default: |
1025 | res = -EOPNOTSUPP; |
1026 | } |
1027 | return res; |
1028 | } |
1029 | |
1030 | static void pegasus_set_multicast(struct net_device *net) |
1031 | { |
1032 | pegasus_t *pegasus = netdev_priv(dev: net); |
1033 | |
1034 | if (net->flags & IFF_PROMISC) { |
1035 | pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; |
1036 | netif_info(pegasus, link, net, "Promiscuous mode enabled\n" ); |
1037 | } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { |
1038 | pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; |
1039 | pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; |
1040 | netif_dbg(pegasus, link, net, "set allmulti\n" ); |
1041 | } else { |
1042 | pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; |
1043 | pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; |
1044 | } |
1045 | update_eth_regs_async(pegasus); |
1046 | } |
1047 | |
1048 | static __u8 mii_phy_probe(pegasus_t *pegasus) |
1049 | { |
1050 | int i, ret; |
1051 | __u16 tmp; |
1052 | |
1053 | for (i = 0; i < 32; i++) { |
1054 | ret = read_mii_word(pegasus, phy: i, MII_BMSR, regd: &tmp); |
1055 | if (ret < 0) |
1056 | goto fail; |
1057 | if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) |
1058 | continue; |
1059 | else |
1060 | return i; |
1061 | } |
1062 | fail: |
1063 | return 0xff; |
1064 | } |
1065 | |
1066 | static inline void setup_pegasus_II(pegasus_t *pegasus) |
1067 | { |
1068 | int ret; |
1069 | __u8 data = 0xa5; |
1070 | |
1071 | set_register(pegasus, indx: Reg1d, data: 0); |
1072 | set_register(pegasus, indx: Reg7b, data: 1); |
1073 | msleep(msecs: 100); |
1074 | if ((pegasus->features & HAS_HOME_PNA) && mii_mode) |
1075 | set_register(pegasus, indx: Reg7b, data: 0); |
1076 | else |
1077 | set_register(pegasus, indx: Reg7b, data: 2); |
1078 | |
1079 | set_register(pegasus, indx: 0x83, data); |
1080 | ret = get_registers(pegasus, indx: 0x83, size: 1, data: &data); |
1081 | if (ret < 0) |
1082 | goto fail; |
1083 | |
1084 | if (data == 0xa5) |
1085 | pegasus->chip = 0x8513; |
1086 | else |
1087 | pegasus->chip = 0; |
1088 | |
1089 | set_register(pegasus, indx: 0x80, data: 0xc0); |
1090 | set_register(pegasus, indx: 0x83, data: 0xff); |
1091 | set_register(pegasus, indx: 0x84, data: 0x01); |
1092 | |
1093 | if (pegasus->features & HAS_HOME_PNA && mii_mode) |
1094 | set_register(pegasus, indx: Reg81, data: 6); |
1095 | else |
1096 | set_register(pegasus, indx: Reg81, data: 2); |
1097 | |
1098 | return; |
1099 | fail: |
1100 | netif_dbg(pegasus, drv, pegasus->net, "%s failed\n" , __func__); |
1101 | } |
1102 | |
1103 | static void check_carrier(struct work_struct *work) |
1104 | { |
1105 | pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); |
1106 | set_carrier(pegasus->net); |
1107 | if (!(pegasus->flags & PEGASUS_UNPLUG)) { |
1108 | queue_delayed_work(wq: system_long_wq, dwork: &pegasus->carrier_check, |
1109 | CARRIER_CHECK_DELAY); |
1110 | } |
1111 | } |
1112 | |
1113 | static int pegasus_blacklisted(struct usb_device *udev) |
1114 | { |
1115 | struct usb_device_descriptor *udd = &udev->descriptor; |
1116 | |
1117 | /* Special quirk to keep the driver from handling the Belkin Bluetooth |
1118 | * dongle which happens to have the same ID. |
1119 | */ |
1120 | if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && |
1121 | (udd->idProduct == cpu_to_le16(0x0121)) && |
1122 | (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && |
1123 | (udd->bDeviceProtocol == 1)) |
1124 | return 1; |
1125 | |
1126 | return 0; |
1127 | } |
1128 | |
1129 | static int pegasus_probe(struct usb_interface *intf, |
1130 | const struct usb_device_id *id) |
1131 | { |
1132 | struct usb_device *dev = interface_to_usbdev(intf); |
1133 | struct net_device *net; |
1134 | pegasus_t *pegasus; |
1135 | int dev_index = id - pegasus_ids; |
1136 | int res = -ENOMEM; |
1137 | |
1138 | if (pegasus_blacklisted(udev: dev)) |
1139 | return -ENODEV; |
1140 | |
1141 | net = alloc_etherdev(sizeof(struct pegasus)); |
1142 | if (!net) |
1143 | goto out; |
1144 | |
1145 | pegasus = netdev_priv(dev: net); |
1146 | pegasus->dev_index = dev_index; |
1147 | |
1148 | res = alloc_urbs(pegasus); |
1149 | if (res < 0) { |
1150 | dev_err(&intf->dev, "can't allocate %s\n" , "urbs" ); |
1151 | goto out1; |
1152 | } |
1153 | |
1154 | tasklet_setup(t: &pegasus->rx_tl, callback: rx_fixup); |
1155 | |
1156 | INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); |
1157 | |
1158 | pegasus->intf = intf; |
1159 | pegasus->usb = dev; |
1160 | pegasus->net = net; |
1161 | |
1162 | |
1163 | net->watchdog_timeo = PEGASUS_TX_TIMEOUT; |
1164 | net->netdev_ops = &pegasus_netdev_ops; |
1165 | net->ethtool_ops = &ops; |
1166 | pegasus->mii.dev = net; |
1167 | pegasus->mii.mdio_read = mdio_read; |
1168 | pegasus->mii.mdio_write = mdio_write; |
1169 | pegasus->mii.phy_id_mask = 0x1f; |
1170 | pegasus->mii.reg_num_mask = 0x1f; |
1171 | pegasus->msg_enable = netif_msg_init(debug_value: msg_level, NETIF_MSG_DRV |
1172 | | NETIF_MSG_PROBE | NETIF_MSG_LINK); |
1173 | |
1174 | pegasus->features = usb_dev_id[dev_index].private; |
1175 | res = get_interrupt_interval(pegasus); |
1176 | if (res) |
1177 | goto out2; |
1178 | if (reset_mac(pegasus)) { |
1179 | dev_err(&intf->dev, "can't reset MAC\n" ); |
1180 | res = -EIO; |
1181 | goto out2; |
1182 | } |
1183 | set_ethernet_addr(pegasus); |
1184 | if (pegasus->features & PEGASUS_II) { |
1185 | dev_info(&intf->dev, "setup Pegasus II specific registers\n" ); |
1186 | setup_pegasus_II(pegasus); |
1187 | } |
1188 | pegasus->phy = mii_phy_probe(pegasus); |
1189 | if (pegasus->phy == 0xff) { |
1190 | dev_warn(&intf->dev, "can't locate MII phy, using default\n" ); |
1191 | pegasus->phy = 1; |
1192 | } |
1193 | pegasus->mii.phy_id = pegasus->phy; |
1194 | usb_set_intfdata(intf, data: pegasus); |
1195 | SET_NETDEV_DEV(net, &intf->dev); |
1196 | pegasus_reset_wol(dev: net); |
1197 | res = register_netdev(dev: net); |
1198 | if (res) |
1199 | goto out3; |
1200 | queue_delayed_work(wq: system_long_wq, dwork: &pegasus->carrier_check, |
1201 | CARRIER_CHECK_DELAY); |
1202 | dev_info(&intf->dev, "%s, %s, %pM\n" , net->name, |
1203 | usb_dev_id[dev_index].name, net->dev_addr); |
1204 | return 0; |
1205 | |
1206 | out3: |
1207 | usb_set_intfdata(intf, NULL); |
1208 | out2: |
1209 | free_all_urbs(pegasus); |
1210 | out1: |
1211 | free_netdev(dev: net); |
1212 | out: |
1213 | return res; |
1214 | } |
1215 | |
1216 | static void pegasus_disconnect(struct usb_interface *intf) |
1217 | { |
1218 | struct pegasus *pegasus = usb_get_intfdata(intf); |
1219 | |
1220 | usb_set_intfdata(intf, NULL); |
1221 | if (!pegasus) { |
1222 | dev_dbg(&intf->dev, "unregistering non-bound device?\n" ); |
1223 | return; |
1224 | } |
1225 | |
1226 | pegasus->flags |= PEGASUS_UNPLUG; |
1227 | cancel_delayed_work_sync(dwork: &pegasus->carrier_check); |
1228 | unregister_netdev(dev: pegasus->net); |
1229 | unlink_all_urbs(pegasus); |
1230 | free_all_urbs(pegasus); |
1231 | if (pegasus->rx_skb != NULL) { |
1232 | dev_kfree_skb(pegasus->rx_skb); |
1233 | pegasus->rx_skb = NULL; |
1234 | } |
1235 | free_netdev(dev: pegasus->net); |
1236 | } |
1237 | |
1238 | static int pegasus_suspend(struct usb_interface *intf, pm_message_t message) |
1239 | { |
1240 | struct pegasus *pegasus = usb_get_intfdata(intf); |
1241 | |
1242 | netif_device_detach(dev: pegasus->net); |
1243 | cancel_delayed_work_sync(dwork: &pegasus->carrier_check); |
1244 | if (netif_running(dev: pegasus->net)) { |
1245 | usb_kill_urb(urb: pegasus->rx_urb); |
1246 | usb_kill_urb(urb: pegasus->intr_urb); |
1247 | } |
1248 | return 0; |
1249 | } |
1250 | |
1251 | static int pegasus_resume(struct usb_interface *intf) |
1252 | { |
1253 | struct pegasus *pegasus = usb_get_intfdata(intf); |
1254 | |
1255 | netif_device_attach(dev: pegasus->net); |
1256 | if (netif_running(dev: pegasus->net)) { |
1257 | pegasus->rx_urb->status = 0; |
1258 | pegasus->rx_urb->actual_length = 0; |
1259 | read_bulk_callback(urb: pegasus->rx_urb); |
1260 | |
1261 | pegasus->intr_urb->status = 0; |
1262 | pegasus->intr_urb->actual_length = 0; |
1263 | intr_callback(urb: pegasus->intr_urb); |
1264 | } |
1265 | queue_delayed_work(wq: system_long_wq, dwork: &pegasus->carrier_check, |
1266 | CARRIER_CHECK_DELAY); |
1267 | return 0; |
1268 | } |
1269 | |
1270 | static const struct net_device_ops pegasus_netdev_ops = { |
1271 | .ndo_open = pegasus_open, |
1272 | .ndo_stop = pegasus_close, |
1273 | .ndo_siocdevprivate = pegasus_siocdevprivate, |
1274 | .ndo_start_xmit = pegasus_start_xmit, |
1275 | .ndo_set_rx_mode = pegasus_set_multicast, |
1276 | .ndo_tx_timeout = pegasus_tx_timeout, |
1277 | .ndo_set_mac_address = eth_mac_addr, |
1278 | .ndo_validate_addr = eth_validate_addr, |
1279 | }; |
1280 | |
1281 | static struct usb_driver pegasus_driver = { |
1282 | .name = driver_name, |
1283 | .probe = pegasus_probe, |
1284 | .disconnect = pegasus_disconnect, |
1285 | .id_table = pegasus_ids, |
1286 | .suspend = pegasus_suspend, |
1287 | .resume = pegasus_resume, |
1288 | .disable_hub_initiated_lpm = 1, |
1289 | }; |
1290 | |
1291 | static void __init parse_id(char *id) |
1292 | { |
1293 | unsigned int vendor_id = 0, device_id = 0, flags = 0, i = 0; |
1294 | char *token, *name = NULL; |
1295 | |
1296 | if ((token = strsep(&id, ":" )) != NULL) |
1297 | name = token; |
1298 | /* name now points to a null terminated string*/ |
1299 | if ((token = strsep(&id, ":" )) != NULL) |
1300 | vendor_id = simple_strtoul(token, NULL, 16); |
1301 | if ((token = strsep(&id, ":" )) != NULL) |
1302 | device_id = simple_strtoul(token, NULL, 16); |
1303 | flags = simple_strtoul(id, NULL, 16); |
1304 | pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n" , |
1305 | driver_name, name, vendor_id, device_id, flags); |
1306 | |
1307 | if (vendor_id > 0x10000 || vendor_id == 0) |
1308 | return; |
1309 | if (device_id > 0x10000 || device_id == 0) |
1310 | return; |
1311 | |
1312 | for (i = 0; usb_dev_id[i].name; i++); |
1313 | usb_dev_id[i].name = name; |
1314 | usb_dev_id[i].vendor = vendor_id; |
1315 | usb_dev_id[i].device = device_id; |
1316 | usb_dev_id[i].private = flags; |
1317 | pegasus_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; |
1318 | pegasus_ids[i].idVendor = vendor_id; |
1319 | pegasus_ids[i].idProduct = device_id; |
1320 | } |
1321 | |
1322 | static int __init pegasus_init(void) |
1323 | { |
1324 | pr_info("%s: " DRIVER_DESC "\n" , driver_name); |
1325 | if (devid) |
1326 | parse_id(id: devid); |
1327 | return usb_register(&pegasus_driver); |
1328 | } |
1329 | |
1330 | static void __exit pegasus_exit(void) |
1331 | { |
1332 | usb_deregister(&pegasus_driver); |
1333 | } |
1334 | |
1335 | module_init(pegasus_init); |
1336 | module_exit(pegasus_exit); |
1337 | |