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Linux 2.6.17.7
[linux/fpc-iii.git] / drivers / usb / net / rtl8150.c
blob1bbbae283c0b64d7faeec26eb1acb92539ad84cf
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/config.h>
10 #include <linux/sched.h>
11 #include <linux/init.h>
12 #include <linux/signal.h>
13 #include <linux/slab.h>
14 #include <linux/module.h>
15 #include <linux/netdevice.h>
16 #include <linux/etherdevice.h>
17 #include <linux/mii.h>
18 #include <linux/ethtool.h>
19 #include <linux/usb.h>
20 #include <asm/uaccess.h>
21
22 /* Version Information */
23 #define DRIVER_VERSION "v0.6.2 (2004/08/27)"
24 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
25 #define DRIVER_DESC "rtl8150 based usb-ethernet driver"
26
27 #define IDR 0x0120
28 #define MAR 0x0126
29 #define CR 0x012e
30 #define TCR 0x012f
31 #define RCR 0x0130
32 #define TSR 0x0132
33 #define RSR 0x0133
34 #define CON0 0x0135
35 #define CON1 0x0136
36 #define MSR 0x0137
37 #define PHYADD 0x0138
38 #define PHYDAT 0x0139
39 #define PHYCNT 0x013b
40 #define GPPC 0x013d
41 #define BMCR 0x0140
42 #define BMSR 0x0142
43 #define ANAR 0x0144
44 #define ANLP 0x0146
45 #define AER 0x0148
46 #define CSCR 0x014C /* This one has the link status */
47 #define CSCR_LINK_STATUS (1 << 3)
48
49 #define IDR_EEPROM 0x1202
50
51 #define PHY_READ 0
52 #define PHY_WRITE 0x20
53 #define PHY_GO 0x40
54
55 #define MII_TIMEOUT 10
56 #define INTBUFSIZE 8
57
58 #define RTL8150_REQT_READ 0xc0
59 #define RTL8150_REQT_WRITE 0x40
60 #define RTL8150_REQ_GET_REGS 0x05
61 #define RTL8150_REQ_SET_REGS 0x05
62
63
64 /* Transmit status register errors */
65 #define TSR_ECOL (1<<5)
66 #define TSR_LCOL (1<<4)
67 #define TSR_LOSS_CRS (1<<3)
68 #define TSR_JBR (1<<2)
69 #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
70 /* Receive status register errors */
71 #define RSR_CRC (1<<2)
72 #define RSR_FAE (1<<1)
73 #define RSR_ERRORS (RSR_CRC | RSR_FAE)
74
75 /* Media status register definitions */
76 #define MSR_DUPLEX (1<<4)
77 #define MSR_SPEED (1<<3)
78 #define MSR_LINK (1<<2)
79
80 /* Interrupt pipe data */
81 #define INT_TSR 0x00
82 #define INT_RSR 0x01
83 #define INT_MSR 0x02
84 #define INT_WAKSR 0x03
85 #define INT_TXOK_CNT 0x04
86 #define INT_RXLOST_CNT 0x05
87 #define INT_CRERR_CNT 0x06
88 #define INT_COL_CNT 0x07
89
90 /* Transmit status register errors */
91 #define TSR_ECOL (1<<5)
92 #define TSR_LCOL (1<<4)
93 #define TSR_LOSS_CRS (1<<3)
94 #define TSR_JBR (1<<2)
95 #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
96 /* Receive status register errors */
97 #define RSR_CRC (1<<2)
98 #define RSR_FAE (1<<1)
99 #define RSR_ERRORS (RSR_CRC | RSR_FAE)
100
101 /* Media status register definitions */
102 #define MSR_DUPLEX (1<<4)
103 #define MSR_SPEED (1<<3)
104 #define MSR_LINK (1<<2)
105
106 /* Interrupt pipe data */
107 #define INT_TSR 0x00
108 #define INT_RSR 0x01
109 #define INT_MSR 0x02
110 #define INT_WAKSR 0x03
111 #define INT_TXOK_CNT 0x04
112 #define INT_RXLOST_CNT 0x05
113 #define INT_CRERR_CNT 0x06
114 #define INT_COL_CNT 0x07
115
116
117 #define RTL8150_MTU 1540
118 #define RTL8150_TX_TIMEOUT (HZ)
119 #define RX_SKB_POOL_SIZE 4
120
121 /* rtl8150 flags */
122 #define RTL8150_HW_CRC 0
123 #define RX_REG_SET 1
124 #define RTL8150_UNPLUG 2
125 #define RX_URB_FAIL 3
126
127 /* Define these values to match your device */
128 #define VENDOR_ID_REALTEK 0x0bda
129 #define VENDOR_ID_MELCO 0x0411
130 #define VENDOR_ID_MICRONET 0x3980
131 #define VENDOR_ID_LONGSHINE 0x07b8
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
138 #undef EEPROM_WRITE
139
140 /* table of devices that work with this driver */
141 static struct usb_device_id rtl8150_table[] = {
142 {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)},
143 {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)},
144 {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)},
145 {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)},
146 {}
147 };
148
149 MODULE_DEVICE_TABLE(usb, rtl8150_table);
150
151 struct rtl8150 {
152 unsigned long flags;
153 struct usb_device *udev;
154 struct tasklet_struct tl;
155 struct net_device_stats stats;
156 struct net_device *netdev;
157 struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb;
158 struct sk_buff *tx_skb, *rx_skb;
159 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE];
160 spinlock_t rx_pool_lock;
161 struct usb_ctrlrequest dr;
162 int intr_interval;
163 __le16 rx_creg;
164 u8 *intr_buff;
165 u8 phy;
166 };
167
168 typedef struct rtl8150 rtl8150_t;
169
170 static void fill_skb_pool(rtl8150_t *);
171 static void free_skb_pool(rtl8150_t *);
172 static inline struct sk_buff *pull_skb(rtl8150_t *);
173 static void rtl8150_disconnect(struct usb_interface *intf);
174 static int rtl8150_probe(struct usb_interface *intf,
175 const struct usb_device_id *id);
176
177 static const char driver_name [] = "rtl8150";
178
179 static struct usb_driver rtl8150_driver = {
180 .name = driver_name,
181 .probe = rtl8150_probe,
182 .disconnect = rtl8150_disconnect,
183 .id_table = rtl8150_table,
184 };
185
186 /*
187 **
188 ** device related part of the code
189 **
190 */
191 static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
192 {
193 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
194 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
195 indx, 0, data, size, 500);
196 }
197
198 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
199 {
200 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
201 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
202 indx, 0, data, size, 500);
203 }
204
205 static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
206 {
207 rtl8150_t *dev;
208
209 switch (urb->status) {
210 case 0:
211 break;
212 case -EINPROGRESS:
213 break;
214 case -ENOENT:
215 break;
216 default:
217 warn("ctrl urb status %d", urb->status);
218 }
219 dev = urb->context;
220 clear_bit(RX_REG_SET, &dev->flags);
221 }
222
223 static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size)
224 {
225 int ret;
226
227 if (test_bit(RX_REG_SET, &dev->flags))
228 return -EAGAIN;
229
230 dev->dr.bRequestType = RTL8150_REQT_WRITE;
231 dev->dr.bRequest = RTL8150_REQ_SET_REGS;
232 dev->dr.wValue = cpu_to_le16(indx);
233 dev->dr.wIndex = 0;
234 dev->dr.wLength = cpu_to_le16(size);
235 dev->ctrl_urb->transfer_buffer_length = size;
236 usb_fill_control_urb(dev->ctrl_urb, dev->udev,
237 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr,
238 &dev->rx_creg, size, ctrl_callback, dev);
239 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC)))
240 err("control request submission failed: %d", ret);
241 else
242 set_bit(RX_REG_SET, &dev->flags);
243
244 return ret;
245 }
246
247 static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)
248 {
249 int i;
250 u8 data[3], tmp;
251
252 data[0] = phy;
253 data[1] = data[2] = 0;
254 tmp = indx | PHY_READ | PHY_GO;
255 i = 0;
256
257 set_registers(dev, PHYADD, sizeof(data), data);
258 set_registers(dev, PHYCNT, 1, &tmp);
259 do {
260 get_registers(dev, PHYCNT, 1, data);
261 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
262
263 if (i < MII_TIMEOUT) {
264 get_registers(dev, PHYDAT, 2, data);
265 *reg = data[0] | (data[1] << 8);
266 return 0;
267 } else
268 return 1;
269 }
270
271 static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)
272 {
273 int i;
274 u8 data[3], tmp;
275
276 data[0] = phy;
277 *(data + 1) = cpu_to_le16p(&reg);
278 tmp = indx | PHY_WRITE | PHY_GO;
279 i = 0;
280
281 set_registers(dev, PHYADD, sizeof(data), data);
282 set_registers(dev, PHYCNT, 1, &tmp);
283 do {
284 get_registers(dev, PHYCNT, 1, data);
285 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
286
287 if (i < MII_TIMEOUT)
288 return 0;
289 else
290 return 1;
291 }
292
293 static inline void set_ethernet_addr(rtl8150_t * dev)
294 {
295 u8 node_id[6];
296
297 get_registers(dev, IDR, sizeof(node_id), node_id);
298 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
299 }
300
301 static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
302 {
303 struct sockaddr *addr = p;
304 rtl8150_t *dev = netdev_priv(netdev);
305 int i;
306
307 if (netif_running(netdev))
308 return -EBUSY;
309
310 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
311 dbg("%s: Setting MAC address to ", netdev->name);
312 for (i = 0; i < 5; i++)
313 dbg("%02X:", netdev->dev_addr[i]);
314 dbg("%02X\n", netdev->dev_addr[i]);
315 /* Set the IDR registers. */
316 set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr);
317 #ifdef EEPROM_WRITE
318 {
319 u8 cr;
320 /* Get the CR contents. */
321 get_registers(dev, CR, 1, &cr);
322 /* Set the WEPROM bit (eeprom write enable). */
323 cr |= 0x20;
324 set_registers(dev, CR, 1, &cr);
325 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
326 so we need to split them up. */
327 for (i = 0; i * 2 < netdev->addr_len; i++) {
328 set_registers(dev, IDR_EEPROM + (i * 2), 2,
329 netdev->dev_addr + (i * 2));
330 }
331 /* Clear the WEPROM bit (preventing accidental eeprom writes). */
332 cr &= 0xdf;
333 set_registers(dev, CR, 1, &cr);
334 }
335 #endif
336 return 0;
337 }
338
339 static int rtl8150_reset(rtl8150_t * dev)
340 {
341 u8 data = 0x10;
342 int i = HZ;
343
344 set_registers(dev, CR, 1, &data);
345 do {
346 get_registers(dev, CR, 1, &data);
347 } while ((data & 0x10) && --i);
348
349 return (i > 0) ? 1 : 0;
350 }
351
352 static int alloc_all_urbs(rtl8150_t * dev)
353 {
354 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
355 if (!dev->rx_urb)
356 return 0;
357 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
358 if (!dev->tx_urb) {
359 usb_free_urb(dev->rx_urb);
360 return 0;
361 }
362 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
363 if (!dev->intr_urb) {
364 usb_free_urb(dev->rx_urb);
365 usb_free_urb(dev->tx_urb);
366 return 0;
367 }
368 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
369 if (!dev->intr_urb) {
370 usb_free_urb(dev->rx_urb);
371 usb_free_urb(dev->tx_urb);
372 usb_free_urb(dev->intr_urb);
373 return 0;
374 }
375
376 return 1;
377 }
378
379 static void free_all_urbs(rtl8150_t * dev)
380 {
381 usb_free_urb(dev->rx_urb);
382 usb_free_urb(dev->tx_urb);
383 usb_free_urb(dev->intr_urb);
384 usb_free_urb(dev->ctrl_urb);
385 }
386
387 static void unlink_all_urbs(rtl8150_t * dev)
388 {
389 usb_kill_urb(dev->rx_urb);
390 usb_kill_urb(dev->tx_urb);
391 usb_kill_urb(dev->intr_urb);
392 usb_kill_urb(dev->ctrl_urb);
393 }
394
395 static inline struct sk_buff *pull_skb(rtl8150_t *dev)
396 {
397 struct sk_buff *skb;
398 int i;
399
400 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
401 if (dev->rx_skb_pool[i]) {
402 skb = dev->rx_skb_pool[i];
403 dev->rx_skb_pool[i] = NULL;
404 return skb;
405 }
406 }
407 return NULL;
408 }
409
410 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
411 {
412 rtl8150_t *dev;
413 unsigned pkt_len, res;
414 struct sk_buff *skb;
415 struct net_device *netdev;
416 u16 rx_stat;
417
418 dev = urb->context;
419 if (!dev)
420 return;
421 if (test_bit(RTL8150_UNPLUG, &dev->flags))
422 return;
423 netdev = dev->netdev;
424 if (!netif_device_present(netdev))
425 return;
426
427 switch (urb->status) {
428 case 0:
429 break;
430 case -ENOENT:
431 return; /* the urb is in unlink state */
432 case -ETIMEDOUT:
433 warn("may be reset is needed?..");
434 goto goon;
435 default:
436 warn("Rx status %d", urb->status);
437 goto goon;
438 }
439
440 if (!dev->rx_skb)
441 goto resched;
442 /* protect against short packets (tell me why we got some?!?) */
443 if (urb->actual_length < 4)
444 goto goon;
445
446 res = urb->actual_length;
447 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
448 pkt_len = res - 4;
449
450 skb_put(dev->rx_skb, pkt_len);
451 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
452 netif_rx(dev->rx_skb);
453 dev->stats.rx_packets++;
454 dev->stats.rx_bytes += pkt_len;
455
456 spin_lock(&dev->rx_pool_lock);
457 skb = pull_skb(dev);
458 spin_unlock(&dev->rx_pool_lock);
459 if (!skb)
460 goto resched;
461
462 dev->rx_skb = skb;
463 goon:
464 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
465 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
466 if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
467 set_bit(RX_URB_FAIL, &dev->flags);
468 goto resched;
469 } else {
470 clear_bit(RX_URB_FAIL, &dev->flags);
471 }
472
473 return;
474 resched:
475 tasklet_schedule(&dev->tl);
476 }
477
478 static void rx_fixup(unsigned long data)
479 {
480 rtl8150_t *dev;
481 struct sk_buff *skb;
482
483 dev = (rtl8150_t *)data;
484
485 spin_lock_irq(&dev->rx_pool_lock);
486 fill_skb_pool(dev);
487 spin_unlock_irq(&dev->rx_pool_lock);
488 if (test_bit(RX_URB_FAIL, &dev->flags))
489 if (dev->rx_skb)
490 goto try_again;
491 spin_lock_irq(&dev->rx_pool_lock);
492 skb = pull_skb(dev);
493 spin_unlock_irq(&dev->rx_pool_lock);
494 if (skb == NULL)
495 goto tlsched;
496 dev->rx_skb = skb;
497 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
498 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
499 try_again:
500 if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
501 set_bit(RX_URB_FAIL, &dev->flags);
502 goto tlsched;
503 } else {
504 clear_bit(RX_URB_FAIL, &dev->flags);
505 }
506
507 return;
508 tlsched:
509 tasklet_schedule(&dev->tl);
510 }
511
512 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
513 {
514 rtl8150_t *dev;
515
516 dev = urb->context;
517 if (!dev)
518 return;
519 dev_kfree_skb_irq(dev->tx_skb);
520 if (!netif_device_present(dev->netdev))
521 return;
522 if (urb->status)
523 info("%s: Tx status %d", dev->netdev->name, urb->status);
524 dev->netdev->trans_start = jiffies;
525 netif_wake_queue(dev->netdev);
526 }
527
528 static void intr_callback(struct urb *urb, struct pt_regs *regs)
529 {
530 rtl8150_t *dev;
531 __u8 *d;
532 int status;
533
534 dev = urb->context;
535 if (!dev)
536 return;
537 switch (urb->status) {
538 case 0: /* success */
539 break;
540 case -ECONNRESET: /* unlink */
541 case -ENOENT:
542 case -ESHUTDOWN:
543 return;
544 /* -EPIPE: should clear the halt */
545 default:
546 info("%s: intr status %d", dev->netdev->name, urb->status);
547 goto resubmit;
548 }
549
550 d = urb->transfer_buffer;
551 if (d[0] & TSR_ERRORS) {
552 dev->stats.tx_errors++;
553 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
554 dev->stats.tx_aborted_errors++;
555 if (d[INT_TSR] & TSR_LCOL)
556 dev->stats.tx_window_errors++;
557 if (d[INT_TSR] & TSR_LOSS_CRS)
558 dev->stats.tx_carrier_errors++;
559 }
560 /* Report link status changes to the network stack */
561 if ((d[INT_MSR] & MSR_LINK) == 0) {
562 if (netif_carrier_ok(dev->netdev)) {
563 netif_carrier_off(dev->netdev);
564 dbg("%s: LINK LOST\n", __func__);
565 }
566 } else {
567 if (!netif_carrier_ok(dev->netdev)) {
568 netif_carrier_on(dev->netdev);
569 dbg("%s: LINK CAME BACK\n", __func__);
570 }
571 }
572
573 resubmit:
574 status = usb_submit_urb (urb, SLAB_ATOMIC);
575 if (status)
576 err ("can't resubmit intr, %s-%s/input0, status %d",
577 dev->udev->bus->bus_name,
578 dev->udev->devpath, status);
579 }
580
581
582 /*
583 **
584 ** network related part of the code
585 **
586 */
587
588 static void fill_skb_pool(rtl8150_t *dev)
589 {
590 struct sk_buff *skb;
591 int i;
592
593 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
594 if (dev->rx_skb_pool[i])
595 continue;
596 skb = dev_alloc_skb(RTL8150_MTU + 2);
597 if (!skb) {
598 return;
599 }
600 skb->dev = dev->netdev;
601 skb_reserve(skb, 2);
602 dev->rx_skb_pool[i] = skb;
603 }
604 }
605
606 static void free_skb_pool(rtl8150_t *dev)
607 {
608 int i;
609
610 for (i = 0; i < RX_SKB_POOL_SIZE; i++)
611 if (dev->rx_skb_pool[i])
612 dev_kfree_skb(dev->rx_skb_pool[i]);
613 }
614
615 static int enable_net_traffic(rtl8150_t * dev)
616 {
617 u8 cr, tcr, rcr, msr;
618
619 if (!rtl8150_reset(dev)) {
620 warn("%s - device reset failed", __FUNCTION__);
621 }
622 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */
623 rcr = 0x9e;
624 dev->rx_creg = cpu_to_le16(rcr);
625 tcr = 0xd8;
626 cr = 0x0c;
627 if (!(rcr & 0x80))
628 set_bit(RTL8150_HW_CRC, &dev->flags);
629 set_registers(dev, RCR, 1, &rcr);
630 set_registers(dev, TCR, 1, &tcr);
631 set_registers(dev, CR, 1, &cr);
632 get_registers(dev, MSR, 1, &msr);
633
634 return 0;
635 }
636
637 static void disable_net_traffic(rtl8150_t * dev)
638 {
639 u8 cr;
640
641 get_registers(dev, CR, 1, &cr);
642 cr &= 0xf3;
643 set_registers(dev, CR, 1, &cr);
644 }
645
646 static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev)
647 {
648 return &((rtl8150_t *)netdev_priv(dev))->stats;
649 }
650
651 static void rtl8150_tx_timeout(struct net_device *netdev)
652 {
653 rtl8150_t *dev = netdev_priv(netdev);
654 warn("%s: Tx timeout.", netdev->name);
655 usb_unlink_urb(dev->tx_urb);
656 dev->stats.tx_errors++;
657 }
658
659 static void rtl8150_set_multicast(struct net_device *netdev)
660 {
661 rtl8150_t *dev = netdev_priv(netdev);
662 netif_stop_queue(netdev);
663 if (netdev->flags & IFF_PROMISC) {
664 dev->rx_creg |= cpu_to_le16(0x0001);
665 info("%s: promiscuous mode", netdev->name);
666 } else if (netdev->mc_count ||
667 (netdev->flags & IFF_ALLMULTI)) {
668 dev->rx_creg &= cpu_to_le16(0xfffe);
669 dev->rx_creg |= cpu_to_le16(0x0002);
670 info("%s: allmulti set", netdev->name);
671 } else {
672 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
673 dev->rx_creg &= cpu_to_le16(0x00fc);
674 }
675 async_set_registers(dev, RCR, 2);
676 netif_wake_queue(netdev);
677 }
678
679 static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev)
680 {
681 rtl8150_t *dev = netdev_priv(netdev);
682 int count, res;
683
684 netif_stop_queue(netdev);
685 count = (skb->len < 60) ? 60 : skb->len;
686 count = (count & 0x3f) ? count : count + 1;
687 dev->tx_skb = skb;
688 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),
689 skb->data, count, write_bulk_callback, dev);
690 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
691 warn("failed tx_urb %d\n", res);
692 dev->stats.tx_errors++;
693 netif_start_queue(netdev);
694 } else {
695 dev->stats.tx_packets++;
696 dev->stats.tx_bytes += skb->len;
697 netdev->trans_start = jiffies;
698 }
699
700 return 0;
701 }
702
703
704 static void set_carrier(struct net_device *netdev)
705 {
706 rtl8150_t *dev = netdev_priv(netdev);
707 short tmp;
708
709 get_registers(dev, CSCR, 2, &tmp);
710 if (tmp & CSCR_LINK_STATUS)
711 netif_carrier_on(netdev);
712 else
713 netif_carrier_off(netdev);
714 }
715
716 static int rtl8150_open(struct net_device *netdev)
717 {
718 rtl8150_t *dev = netdev_priv(netdev);
719 int res;
720
721 if (dev->rx_skb == NULL)
722 dev->rx_skb = pull_skb(dev);
723 if (!dev->rx_skb)
724 return -ENOMEM;
725
726 set_registers(dev, IDR, 6, netdev->dev_addr);
727
728 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
729 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
730 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL)))
731 warn("%s: rx_urb submit failed: %d", __FUNCTION__, res);
732 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),
733 dev->intr_buff, INTBUFSIZE, intr_callback,
734 dev, dev->intr_interval);
735 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL)))
736 warn("%s: intr_urb submit failed: %d", __FUNCTION__, res);
737 netif_start_queue(netdev);
738 enable_net_traffic(dev);
739 set_carrier(netdev);
740
741 return res;
742 }
743
744 static int rtl8150_close(struct net_device *netdev)
745 {
746 rtl8150_t *dev = netdev_priv(netdev);
747 int res = 0;
748
749 netif_stop_queue(netdev);
750 if (!test_bit(RTL8150_UNPLUG, &dev->flags))
751 disable_net_traffic(dev);
752 unlink_all_urbs(dev);
753
754 return res;
755 }
756
757 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
758 {
759 rtl8150_t *dev = netdev_priv(netdev);
760
761 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
762 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
763 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info);
764 }
765
766 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
767 {
768 rtl8150_t *dev = netdev_priv(netdev);
769 short lpa, bmcr;
770
771 ecmd->supported = (SUPPORTED_10baseT_Half |
772 SUPPORTED_10baseT_Full |
773 SUPPORTED_100baseT_Half |
774 SUPPORTED_100baseT_Full |
775 SUPPORTED_Autoneg |
776 SUPPORTED_TP | SUPPORTED_MII);
777 ecmd->port = PORT_TP;
778 ecmd->transceiver = XCVR_INTERNAL;
779 ecmd->phy_address = dev->phy;
780 get_registers(dev, BMCR, 2, &bmcr);
781 get_registers(dev, ANLP, 2, &lpa);
782 if (bmcr & BMCR_ANENABLE) {
783 ecmd->autoneg = AUTONEG_ENABLE;
784 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ?
785 SPEED_100 : SPEED_10;
786 if (ecmd->speed == SPEED_100)
787 ecmd->duplex = (lpa & LPA_100FULL) ?
788 DUPLEX_FULL : DUPLEX_HALF;
789 else
790 ecmd->duplex = (lpa & LPA_10FULL) ?
791 DUPLEX_FULL : DUPLEX_HALF;
792 } else {
793 ecmd->autoneg = AUTONEG_DISABLE;
794 ecmd->speed = (bmcr & BMCR_SPEED100) ?
795 SPEED_100 : SPEED_10;
796 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
797 DUPLEX_FULL : DUPLEX_HALF;
798 }
799 return 0;
800 }
801
802 static struct ethtool_ops ops = {
803 .get_drvinfo = rtl8150_get_drvinfo,
804 .get_settings = rtl8150_get_settings,
805 .get_link = ethtool_op_get_link
806 };
807
808 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
809 {
810 rtl8150_t *dev = netdev_priv(netdev);
811 u16 *data = (u16 *) & rq->ifr_ifru;
812 int res = 0;
813
814 switch (cmd) {
815 case SIOCDEVPRIVATE:
816 data[0] = dev->phy;
817 case SIOCDEVPRIVATE + 1:
818 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);
819 break;
820 case SIOCDEVPRIVATE + 2:
821 if (!capable(CAP_NET_ADMIN))
822 return -EPERM;
823 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);
824 break;
825 default:
826 res = -EOPNOTSUPP;
827 }
828
829 return res;
830 }
831
832 static int rtl8150_probe(struct usb_interface *intf,
833 const struct usb_device_id *id)
834 {
835 struct usb_device *udev = interface_to_usbdev(intf);
836 rtl8150_t *dev;
837 struct net_device *netdev;
838
839 netdev = alloc_etherdev(sizeof(rtl8150_t));
840 if (!netdev) {
841 err("Out of memory");
842 return -ENOMEM;
843 }
844
845 dev = netdev_priv(netdev);
846 memset(dev, 0, sizeof(rtl8150_t));
847
848 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
849 if (!dev->intr_buff) {
850 free_netdev(netdev);
851 return -ENOMEM;
852 }
853
854 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
855 spin_lock_init(&dev->rx_pool_lock);
856
857 dev->udev = udev;
858 dev->netdev = netdev;
859 SET_MODULE_OWNER(netdev);
860 netdev->open = rtl8150_open;
861 netdev->stop = rtl8150_close;
862 netdev->do_ioctl = rtl8150_ioctl;
863 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
864 netdev->tx_timeout = rtl8150_tx_timeout;
865 netdev->hard_start_xmit = rtl8150_start_xmit;
866 netdev->set_multicast_list = rtl8150_set_multicast;
867 netdev->set_mac_address = rtl8150_set_mac_address;
868 netdev->get_stats = rtl8150_netdev_stats;
869 netdev->mtu = RTL8150_MTU;
870 SET_ETHTOOL_OPS(netdev, &ops);
871 dev->intr_interval = 100; /* 100ms */
872
873 if (!alloc_all_urbs(dev)) {
874 err("out of memory");
875 goto out;
876 }
877 if (!rtl8150_reset(dev)) {
878 err("couldn't reset the device");
879 goto out1;
880 }
881 fill_skb_pool(dev);
882 set_ethernet_addr(dev);
883
884 usb_set_intfdata(intf, dev);
885 SET_NETDEV_DEV(netdev, &intf->dev);
886 if (register_netdev(netdev) != 0) {
887 err("couldn't register the device");
888 goto out2;
889 }
890
891 info("%s: rtl8150 is detected", netdev->name);
892
893 return 0;
894
895 out2:
896 usb_set_intfdata(intf, NULL);
897 free_skb_pool(dev);
898 out1:
899 free_all_urbs(dev);
900 out:
901 kfree(dev->intr_buff);
902 free_netdev(netdev);
903 return -EIO;
904 }
905
906 static void rtl8150_disconnect(struct usb_interface *intf)
907 {
908 rtl8150_t *dev = usb_get_intfdata(intf);
909
910 usb_set_intfdata(intf, NULL);
911 if (dev) {
912 set_bit(RTL8150_UNPLUG, &dev->flags);
913 tasklet_disable(&dev->tl);
914 unregister_netdev(dev->netdev);
915 unlink_all_urbs(dev);
916 free_all_urbs(dev);
917 free_skb_pool(dev);
918 if (dev->rx_skb)
919 dev_kfree_skb(dev->rx_skb);
920 kfree(dev->intr_buff);
921 free_netdev(dev->netdev);
922 }
923 }
924
925 static int __init usb_rtl8150_init(void)
926 {
927 info(DRIVER_DESC " " DRIVER_VERSION);
928 return usb_register(&rtl8150_driver);
929 }
930
931 static void __exit usb_rtl8150_exit(void)
932 {
933 usb_deregister(&rtl8150_driver);
934 }
935
936 module_init(usb_rtl8150_init);
937 module_exit(usb_rtl8150_exit);
938
939 MODULE_AUTHOR(DRIVER_AUTHOR);
940 MODULE_DESCRIPTION(DRIVER_DESC);
941 MODULE_LICENSE("GPL");
Linux with added FPC-III support