diff options
Diffstat (limited to 'drivers/net/usb/rtl8150.c')
-rw-r--r-- | drivers/net/usb/rtl8150.c | 1004 |
1 files changed, 1004 insertions, 0 deletions
diff --git a/drivers/net/usb/rtl8150.c b/drivers/net/usb/rtl8150.c new file mode 100644 index 000000000000..fa598f0340cf --- /dev/null +++ b/drivers/net/usb/rtl8150.c | |||
@@ -0,0 +1,1004 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net) | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or | ||
5 | * modify it under the terms of the GNU General Public License | ||
6 | * version 2 as published by the Free Software Foundation. | ||
7 | */ | ||
8 | |||
9 | #include <linux/init.h> | ||
10 | #include <linux/signal.h> | ||
11 | #include <linux/slab.h> | ||
12 | #include <linux/module.h> | ||
13 | #include <linux/netdevice.h> | ||
14 | #include <linux/etherdevice.h> | ||
15 | #include <linux/mii.h> | ||
16 | #include <linux/ethtool.h> | ||
17 | #include <linux/usb.h> | ||
18 | #include <asm/uaccess.h> | ||
19 | |||
20 | /* Version Information */ | ||
21 | #define DRIVER_VERSION "v0.6.2 (2004/08/27)" | ||
22 | #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" | ||
23 | #define DRIVER_DESC "rtl8150 based usb-ethernet driver" | ||
24 | |||
25 | #define IDR 0x0120 | ||
26 | #define MAR 0x0126 | ||
27 | #define CR 0x012e | ||
28 | #define TCR 0x012f | ||
29 | #define RCR 0x0130 | ||
30 | #define TSR 0x0132 | ||
31 | #define RSR 0x0133 | ||
32 | #define CON0 0x0135 | ||
33 | #define CON1 0x0136 | ||
34 | #define MSR 0x0137 | ||
35 | #define PHYADD 0x0138 | ||
36 | #define PHYDAT 0x0139 | ||
37 | #define PHYCNT 0x013b | ||
38 | #define GPPC 0x013d | ||
39 | #define BMCR 0x0140 | ||
40 | #define BMSR 0x0142 | ||
41 | #define ANAR 0x0144 | ||
42 | #define ANLP 0x0146 | ||
43 | #define AER 0x0148 | ||
44 | #define CSCR 0x014C /* This one has the link status */ | ||
45 | #define CSCR_LINK_STATUS (1 << 3) | ||
46 | |||
47 | #define IDR_EEPROM 0x1202 | ||
48 | |||
49 | #define PHY_READ 0 | ||
50 | #define PHY_WRITE 0x20 | ||
51 | #define PHY_GO 0x40 | ||
52 | |||
53 | #define MII_TIMEOUT 10 | ||
54 | #define INTBUFSIZE 8 | ||
55 | |||
56 | #define RTL8150_REQT_READ 0xc0 | ||
57 | #define RTL8150_REQT_WRITE 0x40 | ||
58 | #define RTL8150_REQ_GET_REGS 0x05 | ||
59 | #define RTL8150_REQ_SET_REGS 0x05 | ||
60 | |||
61 | |||
62 | /* Transmit status register errors */ | ||
63 | #define TSR_ECOL (1<<5) | ||
64 | #define TSR_LCOL (1<<4) | ||
65 | #define TSR_LOSS_CRS (1<<3) | ||
66 | #define TSR_JBR (1<<2) | ||
67 | #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) | ||
68 | /* Receive status register errors */ | ||
69 | #define RSR_CRC (1<<2) | ||
70 | #define RSR_FAE (1<<1) | ||
71 | #define RSR_ERRORS (RSR_CRC | RSR_FAE) | ||
72 | |||
73 | /* Media status register definitions */ | ||
74 | #define MSR_DUPLEX (1<<4) | ||
75 | #define MSR_SPEED (1<<3) | ||
76 | #define MSR_LINK (1<<2) | ||
77 | |||
78 | /* Interrupt pipe data */ | ||
79 | #define INT_TSR 0x00 | ||
80 | #define INT_RSR 0x01 | ||
81 | #define INT_MSR 0x02 | ||
82 | #define INT_WAKSR 0x03 | ||
83 | #define INT_TXOK_CNT 0x04 | ||
84 | #define INT_RXLOST_CNT 0x05 | ||
85 | #define INT_CRERR_CNT 0x06 | ||
86 | #define INT_COL_CNT 0x07 | ||
87 | |||
88 | /* Transmit status register errors */ | ||
89 | #define TSR_ECOL (1<<5) | ||
90 | #define TSR_LCOL (1<<4) | ||
91 | #define TSR_LOSS_CRS (1<<3) | ||
92 | #define TSR_JBR (1<<2) | ||
93 | #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) | ||
94 | /* Receive status register errors */ | ||
95 | #define RSR_CRC (1<<2) | ||
96 | #define RSR_FAE (1<<1) | ||
97 | #define RSR_ERRORS (RSR_CRC | RSR_FAE) | ||
98 | |||
99 | /* Media status register definitions */ | ||
100 | #define MSR_DUPLEX (1<<4) | ||
101 | #define MSR_SPEED (1<<3) | ||
102 | #define MSR_LINK (1<<2) | ||
103 | |||
104 | /* Interrupt pipe data */ | ||
105 | #define INT_TSR 0x00 | ||
106 | #define INT_RSR 0x01 | ||
107 | #define INT_MSR 0x02 | ||
108 | #define INT_WAKSR 0x03 | ||
109 | #define INT_TXOK_CNT 0x04 | ||
110 | #define INT_RXLOST_CNT 0x05 | ||
111 | #define INT_CRERR_CNT 0x06 | ||
112 | #define INT_COL_CNT 0x07 | ||
113 | |||
114 | |||
115 | #define RTL8150_MTU 1540 | ||
116 | #define RTL8150_TX_TIMEOUT (HZ) | ||
117 | #define RX_SKB_POOL_SIZE 4 | ||
118 | |||
119 | /* rtl8150 flags */ | ||
120 | #define RTL8150_HW_CRC 0 | ||
121 | #define RX_REG_SET 1 | ||
122 | #define RTL8150_UNPLUG 2 | ||
123 | #define RX_URB_FAIL 3 | ||
124 | |||
125 | /* Define these values to match your device */ | ||
126 | #define VENDOR_ID_REALTEK 0x0bda | ||
127 | #define VENDOR_ID_MELCO 0x0411 | ||
128 | #define VENDOR_ID_MICRONET 0x3980 | ||
129 | #define VENDOR_ID_LONGSHINE 0x07b8 | ||
130 | #define VENDOR_ID_OQO 0x1557 | ||
131 | #define VENDOR_ID_ZYXEL 0x0586 | ||
132 | |||
133 | #define PRODUCT_ID_RTL8150 0x8150 | ||
134 | #define PRODUCT_ID_LUAKTX 0x0012 | ||
135 | #define PRODUCT_ID_LCS8138TX 0x401a | ||
136 | #define PRODUCT_ID_SP128AR 0x0003 | ||
137 | #define PRODUCT_ID_PRESTIGE 0x401a | ||
138 | |||
139 | #undef EEPROM_WRITE | ||
140 | |||
141 | /* table of devices that work with this driver */ | ||
142 | static struct usb_device_id rtl8150_table[] = { | ||
143 | {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, | ||
144 | {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, | ||
145 | {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, | ||
146 | {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, | ||
147 | {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, | ||
148 | {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, | ||
149 | {} | ||
150 | }; | ||
151 | |||
152 | MODULE_DEVICE_TABLE(usb, rtl8150_table); | ||
153 | |||
154 | struct rtl8150 { | ||
155 | unsigned long flags; | ||
156 | struct usb_device *udev; | ||
157 | struct tasklet_struct tl; | ||
158 | struct net_device_stats stats; | ||
159 | struct net_device *netdev; | ||
160 | struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb; | ||
161 | struct sk_buff *tx_skb, *rx_skb; | ||
162 | struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; | ||
163 | spinlock_t rx_pool_lock; | ||
164 | struct usb_ctrlrequest dr; | ||
165 | int intr_interval; | ||
166 | __le16 rx_creg; | ||
167 | u8 *intr_buff; | ||
168 | u8 phy; | ||
169 | }; | ||
170 | |||
171 | typedef struct rtl8150 rtl8150_t; | ||
172 | |||
173 | static void fill_skb_pool(rtl8150_t *); | ||
174 | static void free_skb_pool(rtl8150_t *); | ||
175 | static inline struct sk_buff *pull_skb(rtl8150_t *); | ||
176 | static void rtl8150_disconnect(struct usb_interface *intf); | ||
177 | static int rtl8150_probe(struct usb_interface *intf, | ||
178 | const struct usb_device_id *id); | ||
179 | static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message); | ||
180 | static int rtl8150_resume(struct usb_interface *intf); | ||
181 | |||
182 | static const char driver_name [] = "rtl8150"; | ||
183 | |||
184 | static struct usb_driver rtl8150_driver = { | ||
185 | .name = driver_name, | ||
186 | .probe = rtl8150_probe, | ||
187 | .disconnect = rtl8150_disconnect, | ||
188 | .id_table = rtl8150_table, | ||
189 | .suspend = rtl8150_suspend, | ||
190 | .resume = rtl8150_resume | ||
191 | }; | ||
192 | |||
193 | /* | ||
194 | ** | ||
195 | ** device related part of the code | ||
196 | ** | ||
197 | */ | ||
198 | static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) | ||
199 | { | ||
200 | return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | ||
201 | RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, | ||
202 | indx, 0, data, size, 500); | ||
203 | } | ||
204 | |||
205 | static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) | ||
206 | { | ||
207 | return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | ||
208 | RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, | ||
209 | indx, 0, data, size, 500); | ||
210 | } | ||
211 | |||
212 | static void ctrl_callback(struct urb *urb) | ||
213 | { | ||
214 | rtl8150_t *dev; | ||
215 | |||
216 | switch (urb->status) { | ||
217 | case 0: | ||
218 | break; | ||
219 | case -EINPROGRESS: | ||
220 | break; | ||
221 | case -ENOENT: | ||
222 | break; | ||
223 | default: | ||
224 | warn("ctrl urb status %d", urb->status); | ||
225 | } | ||
226 | dev = urb->context; | ||
227 | clear_bit(RX_REG_SET, &dev->flags); | ||
228 | } | ||
229 | |||
230 | static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size) | ||
231 | { | ||
232 | int ret; | ||
233 | |||
234 | if (test_bit(RX_REG_SET, &dev->flags)) | ||
235 | return -EAGAIN; | ||
236 | |||
237 | dev->dr.bRequestType = RTL8150_REQT_WRITE; | ||
238 | dev->dr.bRequest = RTL8150_REQ_SET_REGS; | ||
239 | dev->dr.wValue = cpu_to_le16(indx); | ||
240 | dev->dr.wIndex = 0; | ||
241 | dev->dr.wLength = cpu_to_le16(size); | ||
242 | dev->ctrl_urb->transfer_buffer_length = size; | ||
243 | usb_fill_control_urb(dev->ctrl_urb, dev->udev, | ||
244 | usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr, | ||
245 | &dev->rx_creg, size, ctrl_callback, dev); | ||
246 | if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC))) { | ||
247 | if (ret == -ENODEV) | ||
248 | netif_device_detach(dev->netdev); | ||
249 | err("control request submission failed: %d", ret); | ||
250 | } else | ||
251 | set_bit(RX_REG_SET, &dev->flags); | ||
252 | |||
253 | return ret; | ||
254 | } | ||
255 | |||
256 | static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) | ||
257 | { | ||
258 | int i; | ||
259 | u8 data[3], tmp; | ||
260 | |||
261 | data[0] = phy; | ||
262 | data[1] = data[2] = 0; | ||
263 | tmp = indx | PHY_READ | PHY_GO; | ||
264 | i = 0; | ||
265 | |||
266 | set_registers(dev, PHYADD, sizeof(data), data); | ||
267 | set_registers(dev, PHYCNT, 1, &tmp); | ||
268 | do { | ||
269 | get_registers(dev, PHYCNT, 1, data); | ||
270 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | ||
271 | |||
272 | if (i < MII_TIMEOUT) { | ||
273 | get_registers(dev, PHYDAT, 2, data); | ||
274 | *reg = data[0] | (data[1] << 8); | ||
275 | return 0; | ||
276 | } else | ||
277 | return 1; | ||
278 | } | ||
279 | |||
280 | static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) | ||
281 | { | ||
282 | int i; | ||
283 | u8 data[3], tmp; | ||
284 | |||
285 | data[0] = phy; | ||
286 | data[1] = reg & 0xff; | ||
287 | data[2] = (reg >> 8) & 0xff; | ||
288 | tmp = indx | PHY_WRITE | PHY_GO; | ||
289 | i = 0; | ||
290 | |||
291 | set_registers(dev, PHYADD, sizeof(data), data); | ||
292 | set_registers(dev, PHYCNT, 1, &tmp); | ||
293 | do { | ||
294 | get_registers(dev, PHYCNT, 1, data); | ||
295 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | ||
296 | |||
297 | if (i < MII_TIMEOUT) | ||
298 | return 0; | ||
299 | else | ||
300 | return 1; | ||
301 | } | ||
302 | |||
303 | static inline void set_ethernet_addr(rtl8150_t * dev) | ||
304 | { | ||
305 | u8 node_id[6]; | ||
306 | |||
307 | get_registers(dev, IDR, sizeof(node_id), node_id); | ||
308 | memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id)); | ||
309 | } | ||
310 | |||
311 | static int rtl8150_set_mac_address(struct net_device *netdev, void *p) | ||
312 | { | ||
313 | struct sockaddr *addr = p; | ||
314 | rtl8150_t *dev = netdev_priv(netdev); | ||
315 | int i; | ||
316 | |||
317 | if (netif_running(netdev)) | ||
318 | return -EBUSY; | ||
319 | |||
320 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | ||
321 | dbg("%s: Setting MAC address to ", netdev->name); | ||
322 | for (i = 0; i < 5; i++) | ||
323 | dbg("%02X:", netdev->dev_addr[i]); | ||
324 | dbg("%02X\n", netdev->dev_addr[i]); | ||
325 | /* Set the IDR registers. */ | ||
326 | set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr); | ||
327 | #ifdef EEPROM_WRITE | ||
328 | { | ||
329 | u8 cr; | ||
330 | /* Get the CR contents. */ | ||
331 | get_registers(dev, CR, 1, &cr); | ||
332 | /* Set the WEPROM bit (eeprom write enable). */ | ||
333 | cr |= 0x20; | ||
334 | set_registers(dev, CR, 1, &cr); | ||
335 | /* Write the MAC address into eeprom. Eeprom writes must be word-sized, | ||
336 | so we need to split them up. */ | ||
337 | for (i = 0; i * 2 < netdev->addr_len; i++) { | ||
338 | set_registers(dev, IDR_EEPROM + (i * 2), 2, | ||
339 | netdev->dev_addr + (i * 2)); | ||
340 | } | ||
341 | /* Clear the WEPROM bit (preventing accidental eeprom writes). */ | ||
342 | cr &= 0xdf; | ||
343 | set_registers(dev, CR, 1, &cr); | ||
344 | } | ||
345 | #endif | ||
346 | return 0; | ||
347 | } | ||
348 | |||
349 | static int rtl8150_reset(rtl8150_t * dev) | ||
350 | { | ||
351 | u8 data = 0x10; | ||
352 | int i = HZ; | ||
353 | |||
354 | set_registers(dev, CR, 1, &data); | ||
355 | do { | ||
356 | get_registers(dev, CR, 1, &data); | ||
357 | } while ((data & 0x10) && --i); | ||
358 | |||
359 | return (i > 0) ? 1 : 0; | ||
360 | } | ||
361 | |||
362 | static int alloc_all_urbs(rtl8150_t * dev) | ||
363 | { | ||
364 | dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
365 | if (!dev->rx_urb) | ||
366 | return 0; | ||
367 | dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
368 | if (!dev->tx_urb) { | ||
369 | usb_free_urb(dev->rx_urb); | ||
370 | return 0; | ||
371 | } | ||
372 | dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
373 | if (!dev->intr_urb) { | ||
374 | usb_free_urb(dev->rx_urb); | ||
375 | usb_free_urb(dev->tx_urb); | ||
376 | return 0; | ||
377 | } | ||
378 | dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
379 | if (!dev->intr_urb) { | ||
380 | usb_free_urb(dev->rx_urb); | ||
381 | usb_free_urb(dev->tx_urb); | ||
382 | usb_free_urb(dev->intr_urb); | ||
383 | return 0; | ||
384 | } | ||
385 | |||
386 | return 1; | ||
387 | } | ||
388 | |||
389 | static void free_all_urbs(rtl8150_t * dev) | ||
390 | { | ||
391 | usb_free_urb(dev->rx_urb); | ||
392 | usb_free_urb(dev->tx_urb); | ||
393 | usb_free_urb(dev->intr_urb); | ||
394 | usb_free_urb(dev->ctrl_urb); | ||
395 | } | ||
396 | |||
397 | static void unlink_all_urbs(rtl8150_t * dev) | ||
398 | { | ||
399 | usb_kill_urb(dev->rx_urb); | ||
400 | usb_kill_urb(dev->tx_urb); | ||
401 | usb_kill_urb(dev->intr_urb); | ||
402 | usb_kill_urb(dev->ctrl_urb); | ||
403 | } | ||
404 | |||
405 | static inline struct sk_buff *pull_skb(rtl8150_t *dev) | ||
406 | { | ||
407 | struct sk_buff *skb; | ||
408 | int i; | ||
409 | |||
410 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | ||
411 | if (dev->rx_skb_pool[i]) { | ||
412 | skb = dev->rx_skb_pool[i]; | ||
413 | dev->rx_skb_pool[i] = NULL; | ||
414 | return skb; | ||
415 | } | ||
416 | } | ||
417 | return NULL; | ||
418 | } | ||
419 | |||
420 | static void read_bulk_callback(struct urb *urb) | ||
421 | { | ||
422 | rtl8150_t *dev; | ||
423 | unsigned pkt_len, res; | ||
424 | struct sk_buff *skb; | ||
425 | struct net_device *netdev; | ||
426 | u16 rx_stat; | ||
427 | int status; | ||
428 | |||
429 | dev = urb->context; | ||
430 | if (!dev) | ||
431 | return; | ||
432 | if (test_bit(RTL8150_UNPLUG, &dev->flags)) | ||
433 | return; | ||
434 | netdev = dev->netdev; | ||
435 | if (!netif_device_present(netdev)) | ||
436 | return; | ||
437 | |||
438 | switch (urb->status) { | ||
439 | case 0: | ||
440 | break; | ||
441 | case -ENOENT: | ||
442 | return; /* the urb is in unlink state */ | ||
443 | case -ETIME: | ||
444 | warn("may be reset is needed?.."); | ||
445 | goto goon; | ||
446 | default: | ||
447 | warn("Rx status %d", urb->status); | ||
448 | goto goon; | ||
449 | } | ||
450 | |||
451 | if (!dev->rx_skb) | ||
452 | goto resched; | ||
453 | /* protect against short packets (tell me why we got some?!?) */ | ||
454 | if (urb->actual_length < 4) | ||
455 | goto goon; | ||
456 | |||
457 | res = urb->actual_length; | ||
458 | rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); | ||
459 | pkt_len = res - 4; | ||
460 | |||
461 | skb_put(dev->rx_skb, pkt_len); | ||
462 | dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); | ||
463 | netif_rx(dev->rx_skb); | ||
464 | dev->stats.rx_packets++; | ||
465 | dev->stats.rx_bytes += pkt_len; | ||
466 | |||
467 | spin_lock(&dev->rx_pool_lock); | ||
468 | skb = pull_skb(dev); | ||
469 | spin_unlock(&dev->rx_pool_lock); | ||
470 | if (!skb) | ||
471 | goto resched; | ||
472 | |||
473 | dev->rx_skb = skb; | ||
474 | goon: | ||
475 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | ||
476 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | ||
477 | status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); | ||
478 | if (status == -ENODEV) | ||
479 | netif_device_detach(dev->netdev); | ||
480 | else if (status) { | ||
481 | set_bit(RX_URB_FAIL, &dev->flags); | ||
482 | goto resched; | ||
483 | } else { | ||
484 | clear_bit(RX_URB_FAIL, &dev->flags); | ||
485 | } | ||
486 | |||
487 | return; | ||
488 | resched: | ||
489 | tasklet_schedule(&dev->tl); | ||
490 | } | ||
491 | |||
492 | static void rx_fixup(unsigned long data) | ||
493 | { | ||
494 | rtl8150_t *dev; | ||
495 | struct sk_buff *skb; | ||
496 | int status; | ||
497 | |||
498 | dev = (rtl8150_t *)data; | ||
499 | |||
500 | spin_lock_irq(&dev->rx_pool_lock); | ||
501 | fill_skb_pool(dev); | ||
502 | spin_unlock_irq(&dev->rx_pool_lock); | ||
503 | if (test_bit(RX_URB_FAIL, &dev->flags)) | ||
504 | if (dev->rx_skb) | ||
505 | goto try_again; | ||
506 | spin_lock_irq(&dev->rx_pool_lock); | ||
507 | skb = pull_skb(dev); | ||
508 | spin_unlock_irq(&dev->rx_pool_lock); | ||
509 | if (skb == NULL) | ||
510 | goto tlsched; | ||
511 | dev->rx_skb = skb; | ||
512 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | ||
513 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | ||
514 | try_again: | ||
515 | status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); | ||
516 | if (status == -ENODEV) { | ||
517 | netif_device_detach(dev->netdev); | ||
518 | } else if (status) { | ||
519 | set_bit(RX_URB_FAIL, &dev->flags); | ||
520 | goto tlsched; | ||
521 | } else { | ||
522 | clear_bit(RX_URB_FAIL, &dev->flags); | ||
523 | } | ||
524 | |||
525 | return; | ||
526 | tlsched: | ||
527 | tasklet_schedule(&dev->tl); | ||
528 | } | ||
529 | |||
530 | static void write_bulk_callback(struct urb *urb) | ||
531 | { | ||
532 | rtl8150_t *dev; | ||
533 | |||
534 | dev = urb->context; | ||
535 | if (!dev) | ||
536 | return; | ||
537 | dev_kfree_skb_irq(dev->tx_skb); | ||
538 | if (!netif_device_present(dev->netdev)) | ||
539 | return; | ||
540 | if (urb->status) | ||
541 | info("%s: Tx status %d", dev->netdev->name, urb->status); | ||
542 | dev->netdev->trans_start = jiffies; | ||
543 | netif_wake_queue(dev->netdev); | ||
544 | } | ||
545 | |||
546 | static void intr_callback(struct urb *urb) | ||
547 | { | ||
548 | rtl8150_t *dev; | ||
549 | __u8 *d; | ||
550 | int status; | ||
551 | |||
552 | dev = urb->context; | ||
553 | if (!dev) | ||
554 | return; | ||
555 | switch (urb->status) { | ||
556 | case 0: /* success */ | ||
557 | break; | ||
558 | case -ECONNRESET: /* unlink */ | ||
559 | case -ENOENT: | ||
560 | case -ESHUTDOWN: | ||
561 | return; | ||
562 | /* -EPIPE: should clear the halt */ | ||
563 | default: | ||
564 | info("%s: intr status %d", dev->netdev->name, urb->status); | ||
565 | goto resubmit; | ||
566 | } | ||
567 | |||
568 | d = urb->transfer_buffer; | ||
569 | if (d[0] & TSR_ERRORS) { | ||
570 | dev->stats.tx_errors++; | ||
571 | if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) | ||
572 | dev->stats.tx_aborted_errors++; | ||
573 | if (d[INT_TSR] & TSR_LCOL) | ||
574 | dev->stats.tx_window_errors++; | ||
575 | if (d[INT_TSR] & TSR_LOSS_CRS) | ||
576 | dev->stats.tx_carrier_errors++; | ||
577 | } | ||
578 | /* Report link status changes to the network stack */ | ||
579 | if ((d[INT_MSR] & MSR_LINK) == 0) { | ||
580 | if (netif_carrier_ok(dev->netdev)) { | ||
581 | netif_carrier_off(dev->netdev); | ||
582 | dbg("%s: LINK LOST\n", __func__); | ||
583 | } | ||
584 | } else { | ||
585 | if (!netif_carrier_ok(dev->netdev)) { | ||
586 | netif_carrier_on(dev->netdev); | ||
587 | dbg("%s: LINK CAME BACK\n", __func__); | ||
588 | } | ||
589 | } | ||
590 | |||
591 | resubmit: | ||
592 | status = usb_submit_urb (urb, GFP_ATOMIC); | ||
593 | if (status == -ENODEV) | ||
594 | netif_device_detach(dev->netdev); | ||
595 | else if (status) | ||
596 | err ("can't resubmit intr, %s-%s/input0, status %d", | ||
597 | dev->udev->bus->bus_name, | ||
598 | dev->udev->devpath, status); | ||
599 | } | ||
600 | |||
601 | static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) | ||
602 | { | ||
603 | rtl8150_t *dev = usb_get_intfdata(intf); | ||
604 | |||
605 | netif_device_detach(dev->netdev); | ||
606 | |||
607 | if (netif_running(dev->netdev)) { | ||
608 | usb_kill_urb(dev->rx_urb); | ||
609 | usb_kill_urb(dev->intr_urb); | ||
610 | } | ||
611 | return 0; | ||
612 | } | ||
613 | |||
614 | static int rtl8150_resume(struct usb_interface *intf) | ||
615 | { | ||
616 | rtl8150_t *dev = usb_get_intfdata(intf); | ||
617 | |||
618 | netif_device_attach(dev->netdev); | ||
619 | if (netif_running(dev->netdev)) { | ||
620 | dev->rx_urb->status = 0; | ||
621 | dev->rx_urb->actual_length = 0; | ||
622 | read_bulk_callback(dev->rx_urb); | ||
623 | |||
624 | dev->intr_urb->status = 0; | ||
625 | dev->intr_urb->actual_length = 0; | ||
626 | intr_callback(dev->intr_urb); | ||
627 | } | ||
628 | return 0; | ||
629 | } | ||
630 | |||
631 | /* | ||
632 | ** | ||
633 | ** network related part of the code | ||
634 | ** | ||
635 | */ | ||
636 | |||
637 | static void fill_skb_pool(rtl8150_t *dev) | ||
638 | { | ||
639 | struct sk_buff *skb; | ||
640 | int i; | ||
641 | |||
642 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | ||
643 | if (dev->rx_skb_pool[i]) | ||
644 | continue; | ||
645 | skb = dev_alloc_skb(RTL8150_MTU + 2); | ||
646 | if (!skb) { | ||
647 | return; | ||
648 | } | ||
649 | skb_reserve(skb, 2); | ||
650 | dev->rx_skb_pool[i] = skb; | ||
651 | } | ||
652 | } | ||
653 | |||
654 | static void free_skb_pool(rtl8150_t *dev) | ||
655 | { | ||
656 | int i; | ||
657 | |||
658 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) | ||
659 | if (dev->rx_skb_pool[i]) | ||
660 | dev_kfree_skb(dev->rx_skb_pool[i]); | ||
661 | } | ||
662 | |||
663 | static int enable_net_traffic(rtl8150_t * dev) | ||
664 | { | ||
665 | u8 cr, tcr, rcr, msr; | ||
666 | |||
667 | if (!rtl8150_reset(dev)) { | ||
668 | warn("%s - device reset failed", __FUNCTION__); | ||
669 | } | ||
670 | /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ | ||
671 | rcr = 0x9e; | ||
672 | dev->rx_creg = cpu_to_le16(rcr); | ||
673 | tcr = 0xd8; | ||
674 | cr = 0x0c; | ||
675 | if (!(rcr & 0x80)) | ||
676 | set_bit(RTL8150_HW_CRC, &dev->flags); | ||
677 | set_registers(dev, RCR, 1, &rcr); | ||
678 | set_registers(dev, TCR, 1, &tcr); | ||
679 | set_registers(dev, CR, 1, &cr); | ||
680 | get_registers(dev, MSR, 1, &msr); | ||
681 | |||
682 | return 0; | ||
683 | } | ||
684 | |||
685 | static void disable_net_traffic(rtl8150_t * dev) | ||
686 | { | ||
687 | u8 cr; | ||
688 | |||
689 | get_registers(dev, CR, 1, &cr); | ||
690 | cr &= 0xf3; | ||
691 | set_registers(dev, CR, 1, &cr); | ||
692 | } | ||
693 | |||
694 | static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev) | ||
695 | { | ||
696 | return &((rtl8150_t *)netdev_priv(dev))->stats; | ||
697 | } | ||
698 | |||
699 | static void rtl8150_tx_timeout(struct net_device *netdev) | ||
700 | { | ||
701 | rtl8150_t *dev = netdev_priv(netdev); | ||
702 | warn("%s: Tx timeout.", netdev->name); | ||
703 | usb_unlink_urb(dev->tx_urb); | ||
704 | dev->stats.tx_errors++; | ||
705 | } | ||
706 | |||
707 | static void rtl8150_set_multicast(struct net_device *netdev) | ||
708 | { | ||
709 | rtl8150_t *dev = netdev_priv(netdev); | ||
710 | netif_stop_queue(netdev); | ||
711 | if (netdev->flags & IFF_PROMISC) { | ||
712 | dev->rx_creg |= cpu_to_le16(0x0001); | ||
713 | info("%s: promiscuous mode", netdev->name); | ||
714 | } else if (netdev->mc_count || | ||
715 | (netdev->flags & IFF_ALLMULTI)) { | ||
716 | dev->rx_creg &= cpu_to_le16(0xfffe); | ||
717 | dev->rx_creg |= cpu_to_le16(0x0002); | ||
718 | info("%s: allmulti set", netdev->name); | ||
719 | } else { | ||
720 | /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ | ||
721 | dev->rx_creg &= cpu_to_le16(0x00fc); | ||
722 | } | ||
723 | async_set_registers(dev, RCR, 2); | ||
724 | netif_wake_queue(netdev); | ||
725 | } | ||
726 | |||
727 | static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev) | ||
728 | { | ||
729 | rtl8150_t *dev = netdev_priv(netdev); | ||
730 | int count, res; | ||
731 | |||
732 | netif_stop_queue(netdev); | ||
733 | count = (skb->len < 60) ? 60 : skb->len; | ||
734 | count = (count & 0x3f) ? count : count + 1; | ||
735 | dev->tx_skb = skb; | ||
736 | usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), | ||
737 | skb->data, count, write_bulk_callback, dev); | ||
738 | if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { | ||
739 | /* Can we get/handle EPIPE here? */ | ||
740 | if (res == -ENODEV) | ||
741 | netif_device_detach(dev->netdev); | ||
742 | else { | ||
743 | warn("failed tx_urb %d\n", res); | ||
744 | dev->stats.tx_errors++; | ||
745 | netif_start_queue(netdev); | ||
746 | } | ||
747 | } else { | ||
748 | dev->stats.tx_packets++; | ||
749 | dev->stats.tx_bytes += skb->len; | ||
750 | netdev->trans_start = jiffies; | ||
751 | } | ||
752 | |||
753 | return 0; | ||
754 | } | ||
755 | |||
756 | |||
757 | static void set_carrier(struct net_device *netdev) | ||
758 | { | ||
759 | rtl8150_t *dev = netdev_priv(netdev); | ||
760 | short tmp; | ||
761 | |||
762 | get_registers(dev, CSCR, 2, &tmp); | ||
763 | if (tmp & CSCR_LINK_STATUS) | ||
764 | netif_carrier_on(netdev); | ||
765 | else | ||
766 | netif_carrier_off(netdev); | ||
767 | } | ||
768 | |||
769 | static int rtl8150_open(struct net_device *netdev) | ||
770 | { | ||
771 | rtl8150_t *dev = netdev_priv(netdev); | ||
772 | int res; | ||
773 | |||
774 | if (dev->rx_skb == NULL) | ||
775 | dev->rx_skb = pull_skb(dev); | ||
776 | if (!dev->rx_skb) | ||
777 | return -ENOMEM; | ||
778 | |||
779 | set_registers(dev, IDR, 6, netdev->dev_addr); | ||
780 | |||
781 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | ||
782 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | ||
783 | if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { | ||
784 | if (res == -ENODEV) | ||
785 | netif_device_detach(dev->netdev); | ||
786 | warn("%s: rx_urb submit failed: %d", __FUNCTION__, res); | ||
787 | return res; | ||
788 | } | ||
789 | usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), | ||
790 | dev->intr_buff, INTBUFSIZE, intr_callback, | ||
791 | dev, dev->intr_interval); | ||
792 | if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { | ||
793 | if (res == -ENODEV) | ||
794 | netif_device_detach(dev->netdev); | ||
795 | warn("%s: intr_urb submit failed: %d", __FUNCTION__, res); | ||
796 | usb_kill_urb(dev->rx_urb); | ||
797 | return res; | ||
798 | } | ||
799 | enable_net_traffic(dev); | ||
800 | set_carrier(netdev); | ||
801 | netif_start_queue(netdev); | ||
802 | |||
803 | return res; | ||
804 | } | ||
805 | |||
806 | static int rtl8150_close(struct net_device *netdev) | ||
807 | { | ||
808 | rtl8150_t *dev = netdev_priv(netdev); | ||
809 | int res = 0; | ||
810 | |||
811 | netif_stop_queue(netdev); | ||
812 | if (!test_bit(RTL8150_UNPLUG, &dev->flags)) | ||
813 | disable_net_traffic(dev); | ||
814 | unlink_all_urbs(dev); | ||
815 | |||
816 | return res; | ||
817 | } | ||
818 | |||
819 | static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | ||
820 | { | ||
821 | rtl8150_t *dev = netdev_priv(netdev); | ||
822 | |||
823 | strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN); | ||
824 | strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN); | ||
825 | usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info); | ||
826 | } | ||
827 | |||
828 | static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) | ||
829 | { | ||
830 | rtl8150_t *dev = netdev_priv(netdev); | ||
831 | short lpa, bmcr; | ||
832 | |||
833 | ecmd->supported = (SUPPORTED_10baseT_Half | | ||
834 | SUPPORTED_10baseT_Full | | ||
835 | SUPPORTED_100baseT_Half | | ||
836 | SUPPORTED_100baseT_Full | | ||
837 | SUPPORTED_Autoneg | | ||
838 | SUPPORTED_TP | SUPPORTED_MII); | ||
839 | ecmd->port = PORT_TP; | ||
840 | ecmd->transceiver = XCVR_INTERNAL; | ||
841 | ecmd->phy_address = dev->phy; | ||
842 | get_registers(dev, BMCR, 2, &bmcr); | ||
843 | get_registers(dev, ANLP, 2, &lpa); | ||
844 | if (bmcr & BMCR_ANENABLE) { | ||
845 | ecmd->autoneg = AUTONEG_ENABLE; | ||
846 | ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ? | ||
847 | SPEED_100 : SPEED_10; | ||
848 | if (ecmd->speed == SPEED_100) | ||
849 | ecmd->duplex = (lpa & LPA_100FULL) ? | ||
850 | DUPLEX_FULL : DUPLEX_HALF; | ||
851 | else | ||
852 | ecmd->duplex = (lpa & LPA_10FULL) ? | ||
853 | DUPLEX_FULL : DUPLEX_HALF; | ||
854 | } else { | ||
855 | ecmd->autoneg = AUTONEG_DISABLE; | ||
856 | ecmd->speed = (bmcr & BMCR_SPEED100) ? | ||
857 | SPEED_100 : SPEED_10; | ||
858 | ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? | ||
859 | DUPLEX_FULL : DUPLEX_HALF; | ||
860 | } | ||
861 | return 0; | ||
862 | } | ||
863 | |||
864 | static struct ethtool_ops ops = { | ||
865 | .get_drvinfo = rtl8150_get_drvinfo, | ||
866 | .get_settings = rtl8150_get_settings, | ||
867 | .get_link = ethtool_op_get_link | ||
868 | }; | ||
869 | |||
870 | static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) | ||
871 | { | ||
872 | rtl8150_t *dev = netdev_priv(netdev); | ||
873 | u16 *data = (u16 *) & rq->ifr_ifru; | ||
874 | int res = 0; | ||
875 | |||
876 | switch (cmd) { | ||
877 | case SIOCDEVPRIVATE: | ||
878 | data[0] = dev->phy; | ||
879 | case SIOCDEVPRIVATE + 1: | ||
880 | read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); | ||
881 | break; | ||
882 | case SIOCDEVPRIVATE + 2: | ||
883 | if (!capable(CAP_NET_ADMIN)) | ||
884 | return -EPERM; | ||
885 | write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); | ||
886 | break; | ||
887 | default: | ||
888 | res = -EOPNOTSUPP; | ||
889 | } | ||
890 | |||
891 | return res; | ||
892 | } | ||
893 | |||
894 | static int rtl8150_probe(struct usb_interface *intf, | ||
895 | const struct usb_device_id *id) | ||
896 | { | ||
897 | struct usb_device *udev = interface_to_usbdev(intf); | ||
898 | rtl8150_t *dev; | ||
899 | struct net_device *netdev; | ||
900 | |||
901 | netdev = alloc_etherdev(sizeof(rtl8150_t)); | ||
902 | if (!netdev) { | ||
903 | err("Out of memory"); | ||
904 | return -ENOMEM; | ||
905 | } | ||
906 | |||
907 | dev = netdev_priv(netdev); | ||
908 | memset(dev, 0, sizeof(rtl8150_t)); | ||
909 | |||
910 | dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); | ||
911 | if (!dev->intr_buff) { | ||
912 | free_netdev(netdev); | ||
913 | return -ENOMEM; | ||
914 | } | ||
915 | |||
916 | tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); | ||
917 | spin_lock_init(&dev->rx_pool_lock); | ||
918 | |||
919 | dev->udev = udev; | ||
920 | dev->netdev = netdev; | ||
921 | SET_MODULE_OWNER(netdev); | ||
922 | netdev->open = rtl8150_open; | ||
923 | netdev->stop = rtl8150_close; | ||
924 | netdev->do_ioctl = rtl8150_ioctl; | ||
925 | netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; | ||
926 | netdev->tx_timeout = rtl8150_tx_timeout; | ||
927 | netdev->hard_start_xmit = rtl8150_start_xmit; | ||
928 | netdev->set_multicast_list = rtl8150_set_multicast; | ||
929 | netdev->set_mac_address = rtl8150_set_mac_address; | ||
930 | netdev->get_stats = rtl8150_netdev_stats; | ||
931 | netdev->mtu = RTL8150_MTU; | ||
932 | SET_ETHTOOL_OPS(netdev, &ops); | ||
933 | dev->intr_interval = 100; /* 100ms */ | ||
934 | |||
935 | if (!alloc_all_urbs(dev)) { | ||
936 | err("out of memory"); | ||
937 | goto out; | ||
938 | } | ||
939 | if (!rtl8150_reset(dev)) { | ||
940 | err("couldn't reset the device"); | ||
941 | goto out1; | ||
942 | } | ||
943 | fill_skb_pool(dev); | ||
944 | set_ethernet_addr(dev); | ||
945 | |||
946 | usb_set_intfdata(intf, dev); | ||
947 | SET_NETDEV_DEV(netdev, &intf->dev); | ||
948 | if (register_netdev(netdev) != 0) { | ||
949 | err("couldn't register the device"); | ||
950 | goto out2; | ||
951 | } | ||
952 | |||
953 | info("%s: rtl8150 is detected", netdev->name); | ||
954 | |||
955 | return 0; | ||
956 | |||
957 | out2: | ||
958 | usb_set_intfdata(intf, NULL); | ||
959 | free_skb_pool(dev); | ||
960 | out1: | ||
961 | free_all_urbs(dev); | ||
962 | out: | ||
963 | kfree(dev->intr_buff); | ||
964 | free_netdev(netdev); | ||
965 | return -EIO; | ||
966 | } | ||
967 | |||
968 | static void rtl8150_disconnect(struct usb_interface *intf) | ||
969 | { | ||
970 | rtl8150_t *dev = usb_get_intfdata(intf); | ||
971 | |||
972 | usb_set_intfdata(intf, NULL); | ||
973 | if (dev) { | ||
974 | set_bit(RTL8150_UNPLUG, &dev->flags); | ||
975 | tasklet_disable(&dev->tl); | ||
976 | tasklet_kill(&dev->tl); | ||
977 | unregister_netdev(dev->netdev); | ||
978 | unlink_all_urbs(dev); | ||
979 | free_all_urbs(dev); | ||
980 | free_skb_pool(dev); | ||
981 | if (dev->rx_skb) | ||
982 | dev_kfree_skb(dev->rx_skb); | ||
983 | kfree(dev->intr_buff); | ||
984 | free_netdev(dev->netdev); | ||
985 | } | ||
986 | } | ||
987 | |||
988 | static int __init usb_rtl8150_init(void) | ||
989 | { | ||
990 | info(DRIVER_DESC " " DRIVER_VERSION); | ||
991 | return usb_register(&rtl8150_driver); | ||
992 | } | ||
993 | |||
994 | static void __exit usb_rtl8150_exit(void) | ||
995 | { | ||
996 | usb_deregister(&rtl8150_driver); | ||
997 | } | ||
998 | |||
999 | module_init(usb_rtl8150_init); | ||
1000 | module_exit(usb_rtl8150_exit); | ||
1001 | |||
1002 | MODULE_AUTHOR(DRIVER_AUTHOR); | ||
1003 | MODULE_DESCRIPTION(DRIVER_DESC); | ||
1004 | MODULE_LICENSE("GPL"); | ||