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Linux v2.6.13
[linux-2.6/next.git] / drivers / usb / net / rtl8150.c
blob59ab40ebb394b4e72fd56ff73eeed8f7b04bc61f
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 .owner = THIS_MODULE,
181 .name = driver_name,
182 .probe = rtl8150_probe,
183 .disconnect = rtl8150_disconnect,
184 .id_table = rtl8150_table,
185 };
186
187 /*
188 **
189 ** device related part of the code
190 **
191 */
192 static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
193 {
194 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
195 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
196 indx, 0, data, size, 500);
197 }
198
199 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
200 {
201 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
202 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
203 indx, 0, data, size, 500);
204 }
205
206 static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
207 {
208 rtl8150_t *dev;
209
210 switch (urb->status) {
211 case 0:
212 break;
213 case -EINPROGRESS:
214 break;
215 case -ENOENT:
216 break;
217 default:
218 warn("ctrl urb status %d", urb->status);
219 }
220 dev = urb->context;
221 clear_bit(RX_REG_SET, &dev->flags);
222 }
223
224 static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size)
225 {
226 int ret;
227
228 if (test_bit(RX_REG_SET, &dev->flags))
229 return -EAGAIN;
230
231 dev->dr.bRequestType = RTL8150_REQT_WRITE;
232 dev->dr.bRequest = RTL8150_REQ_SET_REGS;
233 dev->dr.wValue = cpu_to_le16(indx);
234 dev->dr.wIndex = 0;
235 dev->dr.wLength = cpu_to_le16(size);
236 dev->ctrl_urb->transfer_buffer_length = size;
237 usb_fill_control_urb(dev->ctrl_urb, dev->udev,
238 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr,
239 &dev->rx_creg, size, ctrl_callback, dev);
240 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC)))
241 err("control request submission failed: %d", ret);
242 else
243 set_bit(RX_REG_SET, &dev->flags);
244
245 return ret;
246 }
247
248 static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)
249 {
250 int i;
251 u8 data[3], tmp;
252
253 data[0] = phy;
254 data[1] = data[2] = 0;
255 tmp = indx | PHY_READ | PHY_GO;
256 i = 0;
257
258 set_registers(dev, PHYADD, sizeof(data), data);
259 set_registers(dev, PHYCNT, 1, &tmp);
260 do {
261 get_registers(dev, PHYCNT, 1, data);
262 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
263
264 if (i < MII_TIMEOUT) {
265 get_registers(dev, PHYDAT, 2, data);
266 *reg = data[0] | (data[1] << 8);
267 return 0;
268 } else
269 return 1;
270 }
271
272 static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)
273 {
274 int i;
275 u8 data[3], tmp;
276
277 data[0] = phy;
278 *(data + 1) = cpu_to_le16p(&reg);
279 tmp = indx | PHY_WRITE | PHY_GO;
280 i = 0;
281
282 set_registers(dev, PHYADD, sizeof(data), data);
283 set_registers(dev, PHYCNT, 1, &tmp);
284 do {
285 get_registers(dev, PHYCNT, 1, data);
286 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
287
288 if (i < MII_TIMEOUT)
289 return 0;
290 else
291 return 1;
292 }
293
294 static inline void set_ethernet_addr(rtl8150_t * dev)
295 {
296 u8 node_id[6];
297
298 get_registers(dev, IDR, sizeof(node_id), node_id);
299 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
300 }
301
302 static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
303 {
304 struct sockaddr *addr = p;
305 rtl8150_t *dev = netdev_priv(netdev);
306 int i;
307
308 if (netif_running(netdev))
309 return -EBUSY;
310
311 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
312 dbg("%s: Setting MAC address to ", netdev->name);
313 for (i = 0; i < 5; i++)
314 dbg("%02X:", netdev->dev_addr[i]);
315 dbg("%02X\n", netdev->dev_addr[i]);
316 /* Set the IDR registers. */
317 set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr);
318 #ifdef EEPROM_WRITE
319 {
320 u8 cr;
321 /* Get the CR contents. */
322 get_registers(dev, CR, 1, &cr);
323 /* Set the WEPROM bit (eeprom write enable). */
324 cr |= 0x20;
325 set_registers(dev, CR, 1, &cr);
326 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
327 so we need to split them up. */
328 for (i = 0; i * 2 < netdev->addr_len; i++) {
329 set_registers(dev, IDR_EEPROM + (i * 2), 2,
330 netdev->dev_addr + (i * 2));
331 }
332 /* Clear the WEPROM bit (preventing accidental eeprom writes). */
333 cr &= 0xdf;
334 set_registers(dev, CR, 1, &cr);
335 }
336 #endif
337 return 0;
338 }
339
340 static int rtl8150_reset(rtl8150_t * dev)
341 {
342 u8 data = 0x10;
343 int i = HZ;
344
345 set_registers(dev, CR, 1, &data);
346 do {
347 get_registers(dev, CR, 1, &data);
348 } while ((data & 0x10) && --i);
349
350 return (i > 0) ? 1 : 0;
351 }
352
353 static int alloc_all_urbs(rtl8150_t * dev)
354 {
355 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
356 if (!dev->rx_urb)
357 return 0;
358 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
359 if (!dev->tx_urb) {
360 usb_free_urb(dev->rx_urb);
361 return 0;
362 }
363 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
364 if (!dev->intr_urb) {
365 usb_free_urb(dev->rx_urb);
366 usb_free_urb(dev->tx_urb);
367 return 0;
368 }
369 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
370 if (!dev->intr_urb) {
371 usb_free_urb(dev->rx_urb);
372 usb_free_urb(dev->tx_urb);
373 usb_free_urb(dev->intr_urb);
374 return 0;
375 }
376
377 return 1;
378 }
379
380 static void free_all_urbs(rtl8150_t * dev)
381 {
382 usb_free_urb(dev->rx_urb);
383 usb_free_urb(dev->tx_urb);
384 usb_free_urb(dev->intr_urb);
385 usb_free_urb(dev->ctrl_urb);
386 }
387
388 static void unlink_all_urbs(rtl8150_t * dev)
389 {
390 usb_kill_urb(dev->rx_urb);
391 usb_kill_urb(dev->tx_urb);
392 usb_kill_urb(dev->intr_urb);
393 usb_kill_urb(dev->ctrl_urb);
394 }
395
396 static inline struct sk_buff *pull_skb(rtl8150_t *dev)
397 {
398 struct sk_buff *skb;
399 int i;
400
401 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
402 if (dev->rx_skb_pool[i]) {
403 skb = dev->rx_skb_pool[i];
404 dev->rx_skb_pool[i] = NULL;
405 return skb;
406 }
407 }
408 return NULL;
409 }
410
411 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
412 {
413 rtl8150_t *dev;
414 unsigned pkt_len, res;
415 struct sk_buff *skb;
416 struct net_device *netdev;
417 u16 rx_stat;
418
419 dev = urb->context;
420 if (!dev)
421 return;
422 if (test_bit(RTL8150_UNPLUG, &dev->flags))
423 return;
424 netdev = dev->netdev;
425 if (!netif_device_present(netdev))
426 return;
427
428 switch (urb->status) {
429 case 0:
430 break;
431 case -ENOENT:
432 return; /* the urb is in unlink state */
433 case -ETIMEDOUT:
434 warn("may be reset is needed?..");
435 goto goon;
436 default:
437 warn("Rx status %d", urb->status);
438 goto goon;
439 }
440
441 if (!dev->rx_skb)
442 goto resched;
443 /* protect against short packets (tell me why we got some?!?) */
444 if (urb->actual_length < 4)
445 goto goon;
446
447 res = urb->actual_length;
448 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
449 pkt_len = res - 4;
450
451 skb_put(dev->rx_skb, pkt_len);
452 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
453 netif_rx(dev->rx_skb);
454 dev->stats.rx_packets++;
455 dev->stats.rx_bytes += pkt_len;
456
457 spin_lock(&dev->rx_pool_lock);
458 skb = pull_skb(dev);
459 spin_unlock(&dev->rx_pool_lock);
460 if (!skb)
461 goto resched;
462
463 dev->rx_skb = skb;
464 goon:
465 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
466 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
467 if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
468 set_bit(RX_URB_FAIL, &dev->flags);
469 goto resched;
470 } else {
471 clear_bit(RX_URB_FAIL, &dev->flags);
472 }
473
474 return;
475 resched:
476 tasklet_schedule(&dev->tl);
477 }
478
479 static void rx_fixup(unsigned long data)
480 {
481 rtl8150_t *dev;
482 struct sk_buff *skb;
483
484 dev = (rtl8150_t *)data;
485
486 spin_lock_irq(&dev->rx_pool_lock);
487 fill_skb_pool(dev);
488 spin_unlock_irq(&dev->rx_pool_lock);
489 if (test_bit(RX_URB_FAIL, &dev->flags))
490 if (dev->rx_skb)
491 goto try_again;
492 spin_lock_irq(&dev->rx_pool_lock);
493 skb = pull_skb(dev);
494 spin_unlock_irq(&dev->rx_pool_lock);
495 if (skb == NULL)
496 goto tlsched;
497 dev->rx_skb = skb;
498 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
499 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
500 try_again:
501 if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
502 set_bit(RX_URB_FAIL, &dev->flags);
503 goto tlsched;
504 } else {
505 clear_bit(RX_URB_FAIL, &dev->flags);
506 }
507
508 return;
509 tlsched:
510 tasklet_schedule(&dev->tl);
511 }
512
513 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
514 {
515 rtl8150_t *dev;
516
517 dev = urb->context;
518 if (!dev)
519 return;
520 dev_kfree_skb_irq(dev->tx_skb);
521 if (!netif_device_present(dev->netdev))
522 return;
523 if (urb->status)
524 info("%s: Tx status %d", dev->netdev->name, urb->status);
525 dev->netdev->trans_start = jiffies;
526 netif_wake_queue(dev->netdev);
527 }
528
529 static void intr_callback(struct urb *urb, struct pt_regs *regs)
530 {
531 rtl8150_t *dev;
532 __u8 *d;
533 int status;
534
535 dev = urb->context;
536 if (!dev)
537 return;
538 switch (urb->status) {
539 case 0: /* success */
540 break;
541 case -ECONNRESET: /* unlink */
542 case -ENOENT:
543 case -ESHUTDOWN:
544 return;
545 /* -EPIPE: should clear the halt */
546 default:
547 info("%s: intr status %d", dev->netdev->name, urb->status);
548 goto resubmit;
549 }
550
551 d = urb->transfer_buffer;
552 if (d[0] & TSR_ERRORS) {
553 dev->stats.tx_errors++;
554 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
555 dev->stats.tx_aborted_errors++;
556 if (d[INT_TSR] & TSR_LCOL)
557 dev->stats.tx_window_errors++;
558 if (d[INT_TSR] & TSR_LOSS_CRS)
559 dev->stats.tx_carrier_errors++;
560 }
561 /* Report link status changes to the network stack */
562 if ((d[INT_MSR] & MSR_LINK) == 0) {
563 if (netif_carrier_ok(dev->netdev)) {
564 netif_carrier_off(dev->netdev);
565 dbg("%s: LINK LOST\n", __func__);
566 }
567 } else {
568 if (!netif_carrier_ok(dev->netdev)) {
569 netif_carrier_on(dev->netdev);
570 dbg("%s: LINK CAME BACK\n", __func__);
571 }
572 }
573
574 resubmit:
575 status = usb_submit_urb (urb, SLAB_ATOMIC);
576 if (status)
577 err ("can't resubmit intr, %s-%s/input0, status %d",
578 dev->udev->bus->bus_name,
579 dev->udev->devpath, status);
580 }
581
582
583 /*
584 **
585 ** network related part of the code
586 **
587 */
588
589 static void fill_skb_pool(rtl8150_t *dev)
590 {
591 struct sk_buff *skb;
592 int i;
593
594 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
595 if (dev->rx_skb_pool[i])
596 continue;
597 skb = dev_alloc_skb(RTL8150_MTU + 2);
598 if (!skb) {
599 return;
600 }
601 skb->dev = dev->netdev;
602 skb_reserve(skb, 2);
603 dev->rx_skb_pool[i] = skb;
604 }
605 }
606
607 static void free_skb_pool(rtl8150_t *dev)
608 {
609 int i;
610
611 for (i = 0; i < RX_SKB_POOL_SIZE; i++)
612 if (dev->rx_skb_pool[i])
613 dev_kfree_skb(dev->rx_skb_pool[i]);
614 }
615
616 static int enable_net_traffic(rtl8150_t * dev)
617 {
618 u8 cr, tcr, rcr, msr;
619
620 if (!rtl8150_reset(dev)) {
621 warn("%s - device reset failed", __FUNCTION__);
622 }
623 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */
624 rcr = 0x9e;
625 dev->rx_creg = cpu_to_le16(rcr);
626 tcr = 0xd8;
627 cr = 0x0c;
628 if (!(rcr & 0x80))
629 set_bit(RTL8150_HW_CRC, &dev->flags);
630 set_registers(dev, RCR, 1, &rcr);
631 set_registers(dev, TCR, 1, &tcr);
632 set_registers(dev, CR, 1, &cr);
633 get_registers(dev, MSR, 1, &msr);
634
635 return 0;
636 }
637
638 static void disable_net_traffic(rtl8150_t * dev)
639 {
640 u8 cr;
641
642 get_registers(dev, CR, 1, &cr);
643 cr &= 0xf3;
644 set_registers(dev, CR, 1, &cr);
645 }
646
647 static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev)
648 {
649 return &((rtl8150_t *)netdev_priv(dev))->stats;
650 }
651
652 static void rtl8150_tx_timeout(struct net_device *netdev)
653 {
654 rtl8150_t *dev = netdev_priv(netdev);
655 warn("%s: Tx timeout.", netdev->name);
656 dev->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
657 usb_unlink_urb(dev->tx_urb);
658 dev->stats.tx_errors++;
659 }
660
661 static void rtl8150_set_multicast(struct net_device *netdev)
662 {
663 rtl8150_t *dev = netdev_priv(netdev);
664 netif_stop_queue(netdev);
665 if (netdev->flags & IFF_PROMISC) {
666 dev->rx_creg |= cpu_to_le16(0x0001);
667 info("%s: promiscuous mode", netdev->name);
668 } else if (netdev->mc_count ||
669 (netdev->flags & IFF_ALLMULTI)) {
670 dev->rx_creg &= cpu_to_le16(0xfffe);
671 dev->rx_creg |= cpu_to_le16(0x0002);
672 info("%s: allmulti set", netdev->name);
673 } else {
674 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
675 dev->rx_creg &= cpu_to_le16(0x00fc);
676 }
677 async_set_registers(dev, RCR, 2);
678 netif_wake_queue(netdev);
679 }
680
681 static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev)
682 {
683 rtl8150_t *dev = netdev_priv(netdev);
684 int count, res;
685
686 netif_stop_queue(netdev);
687 count = (skb->len < 60) ? 60 : skb->len;
688 count = (count & 0x3f) ? count : count + 1;
689 dev->tx_skb = skb;
690 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),
691 skb->data, count, write_bulk_callback, dev);
692 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
693 warn("failed tx_urb %d\n", res);
694 dev->stats.tx_errors++;
695 netif_start_queue(netdev);
696 } else {
697 dev->stats.tx_packets++;
698 dev->stats.tx_bytes += skb->len;
699 netdev->trans_start = jiffies;
700 }
701
702 return 0;
703 }
704
705
706 static void set_carrier(struct net_device *netdev)
707 {
708 rtl8150_t *dev = netdev_priv(netdev);
709 short tmp;
710
711 get_registers(dev, CSCR, 2, &tmp);
712 if (tmp & CSCR_LINK_STATUS)
713 netif_carrier_on(netdev);
714 else
715 netif_carrier_off(netdev);
716 }
717
718 static int rtl8150_open(struct net_device *netdev)
719 {
720 rtl8150_t *dev = netdev_priv(netdev);
721 int res;
722
723 if (dev->rx_skb == NULL)
724 dev->rx_skb = pull_skb(dev);
725 if (!dev->rx_skb)
726 return -ENOMEM;
727
728 set_registers(dev, IDR, 6, netdev->dev_addr);
729
730 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
731 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
732 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL)))
733 warn("%s: rx_urb submit failed: %d", __FUNCTION__, res);
734 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),
735 dev->intr_buff, INTBUFSIZE, intr_callback,
736 dev, dev->intr_interval);
737 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL)))
738 warn("%s: intr_urb submit failed: %d", __FUNCTION__, res);
739 netif_start_queue(netdev);
740 enable_net_traffic(dev);
741 set_carrier(netdev);
742
743 return res;
744 }
745
746 static int rtl8150_close(struct net_device *netdev)
747 {
748 rtl8150_t *dev = netdev_priv(netdev);
749 int res = 0;
750
751 netif_stop_queue(netdev);
752 if (!test_bit(RTL8150_UNPLUG, &dev->flags))
753 disable_net_traffic(dev);
754 unlink_all_urbs(dev);
755
756 return res;
757 }
758
759 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
760 {
761 rtl8150_t *dev = netdev_priv(netdev);
762
763 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
764 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
765 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info);
766 }
767
768 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
769 {
770 rtl8150_t *dev = netdev_priv(netdev);
771 short lpa, bmcr;
772
773 ecmd->supported = (SUPPORTED_10baseT_Half |
774 SUPPORTED_10baseT_Full |
775 SUPPORTED_100baseT_Half |
776 SUPPORTED_100baseT_Full |
777 SUPPORTED_Autoneg |
778 SUPPORTED_TP | SUPPORTED_MII);
779 ecmd->port = PORT_TP;
780 ecmd->transceiver = XCVR_INTERNAL;
781 ecmd->phy_address = dev->phy;
782 get_registers(dev, BMCR, 2, &bmcr);
783 get_registers(dev, ANLP, 2, &lpa);
784 if (bmcr & BMCR_ANENABLE) {
785 ecmd->autoneg = AUTONEG_ENABLE;
786 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ?
787 SPEED_100 : SPEED_10;
788 if (ecmd->speed == SPEED_100)
789 ecmd->duplex = (lpa & LPA_100FULL) ?
790 DUPLEX_FULL : DUPLEX_HALF;
791 else
792 ecmd->duplex = (lpa & LPA_10FULL) ?
793 DUPLEX_FULL : DUPLEX_HALF;
794 } else {
795 ecmd->autoneg = AUTONEG_DISABLE;
796 ecmd->speed = (bmcr & BMCR_SPEED100) ?
797 SPEED_100 : SPEED_10;
798 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
799 DUPLEX_FULL : DUPLEX_HALF;
800 }
801 return 0;
802 }
803
804 static struct ethtool_ops ops = {
805 .get_drvinfo = rtl8150_get_drvinfo,
806 .get_settings = rtl8150_get_settings,
807 .get_link = ethtool_op_get_link
808 };
809
810 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
811 {
812 rtl8150_t *dev = netdev_priv(netdev);
813 u16 *data = (u16 *) & rq->ifr_ifru;
814 int res = 0;
815
816 switch (cmd) {
817 case SIOCDEVPRIVATE:
818 data[0] = dev->phy;
819 case SIOCDEVPRIVATE + 1:
820 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);
821 break;
822 case SIOCDEVPRIVATE + 2:
823 if (!capable(CAP_NET_ADMIN))
824 return -EPERM;
825 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);
826 break;
827 default:
828 res = -EOPNOTSUPP;
829 }
830
831 return res;
832 }
833
834 static int rtl8150_probe(struct usb_interface *intf,
835 const struct usb_device_id *id)
836 {
837 struct usb_device *udev = interface_to_usbdev(intf);
838 rtl8150_t *dev;
839 struct net_device *netdev;
840
841 netdev = alloc_etherdev(sizeof(rtl8150_t));
842 if (!netdev) {
843 err("Out of memory");
844 return -ENOMEM;
845 }
846
847 dev = netdev_priv(netdev);
848 memset(dev, 0, sizeof(rtl8150_t));
849
850 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
851 if (!dev->intr_buff) {
852 free_netdev(netdev);
853 return -ENOMEM;
854 }
855
856 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
857 spin_lock_init(&dev->rx_pool_lock);
858
859 dev->udev = udev;
860 dev->netdev = netdev;
861 SET_MODULE_OWNER(netdev);
862 netdev->open = rtl8150_open;
863 netdev->stop = rtl8150_close;
864 netdev->do_ioctl = rtl8150_ioctl;
865 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
866 netdev->tx_timeout = rtl8150_tx_timeout;
867 netdev->hard_start_xmit = rtl8150_start_xmit;
868 netdev->set_multicast_list = rtl8150_set_multicast;
869 netdev->set_mac_address = rtl8150_set_mac_address;
870 netdev->get_stats = rtl8150_netdev_stats;
871 netdev->mtu = RTL8150_MTU;
872 SET_ETHTOOL_OPS(netdev, &ops);
873 dev->intr_interval = 100; /* 100ms */
874
875 if (!alloc_all_urbs(dev)) {
876 err("out of memory");
877 goto out;
878 }
879 if (!rtl8150_reset(dev)) {
880 err("couldn't reset the device");
881 goto out1;
882 }
883 fill_skb_pool(dev);
884 set_ethernet_addr(dev);
885 info("%s: rtl8150 is detected", netdev->name);
886
887 usb_set_intfdata(intf, dev);
888 SET_NETDEV_DEV(netdev, &intf->dev);
889 if (register_netdev(netdev) != 0) {
890 err("couldn't register the device");
891 goto out2;
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 unregister_netdev(dev->netdev);
914 unlink_all_urbs(dev);
915 free_all_urbs(dev);
916 free_skb_pool(dev);
917 if (dev->rx_skb)
918 dev_kfree_skb(dev->rx_skb);
919 kfree(dev->intr_buff);
920 free_netdev(dev->netdev);
921 }
922 }
923
924 static int __init usb_rtl8150_init(void)
925 {
926 info(DRIVER_DESC " " DRIVER_VERSION);
927 return usb_register(&rtl8150_driver);
928 }
929
930 static void __exit usb_rtl8150_exit(void)
931 {
932 usb_deregister(&rtl8150_driver);
933 }
934
935 module_init(usb_rtl8150_init);
936 module_exit(usb_rtl8150_exit);
937
938 MODULE_AUTHOR(DRIVER_AUTHOR);
939 MODULE_DESCRIPTION(DRIVER_DESC);
940 MODULE_LICENSE("GPL");
linux-next