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Linux-2.6.12-rc2
[linux-2.6/next.git] / drivers / usb / net / rtl8150.c
blob8fb223385f2fb78fc0f7446fba1966bf97c39330
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 unsigned long multicast_filter_limit = 32;
171
172 static void fill_skb_pool(rtl8150_t *);
173 static void free_skb_pool(rtl8150_t *);
174 static inline struct sk_buff *pull_skb(rtl8150_t *);
175 static void rtl8150_disconnect(struct usb_interface *intf);
176 static int rtl8150_probe(struct usb_interface *intf,
177 const struct usb_device_id *id);
178
179 static const char driver_name [] = "rtl8150";
180
181 static struct usb_driver rtl8150_driver = {
182 .owner = THIS_MODULE,
183 .name = driver_name,
184 .probe = rtl8150_probe,
185 .disconnect = rtl8150_disconnect,
186 .id_table = rtl8150_table,
187 };
188
189 /*
190 **
191 ** device related part of the code
192 **
193 */
194 static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
195 {
196 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
197 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
198 indx, 0, data, size, 500);
199 }
200
201 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
202 {
203 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
204 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
205 indx, 0, data, size, 500);
206 }
207
208 static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
209 {
210 rtl8150_t *dev;
211
212 switch (urb->status) {
213 case 0:
214 break;
215 case -EINPROGRESS:
216 break;
217 case -ENOENT:
218 break;
219 default:
220 warn("ctrl urb status %d", urb->status);
221 }
222 dev = urb->context;
223 clear_bit(RX_REG_SET, &dev->flags);
224 }
225
226 static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size)
227 {
228 int ret;
229
230 if (test_bit(RX_REG_SET, &dev->flags))
231 return -EAGAIN;
232
233 dev->dr.bRequestType = RTL8150_REQT_WRITE;
234 dev->dr.bRequest = RTL8150_REQ_SET_REGS;
235 dev->dr.wValue = cpu_to_le16(indx);
236 dev->dr.wIndex = 0;
237 dev->dr.wLength = cpu_to_le16(size);
238 dev->ctrl_urb->transfer_buffer_length = size;
239 usb_fill_control_urb(dev->ctrl_urb, dev->udev,
240 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr,
241 &dev->rx_creg, size, ctrl_callback, dev);
242 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC)))
243 err("control request submission failed: %d", ret);
244 else
245 set_bit(RX_REG_SET, &dev->flags);
246
247 return ret;
248 }
249
250 static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)
251 {
252 int i;
253 u8 data[3], tmp;
254
255 data[0] = phy;
256 data[1] = data[2] = 0;
257 tmp = indx | PHY_READ | PHY_GO;
258 i = 0;
259
260 set_registers(dev, PHYADD, sizeof(data), data);
261 set_registers(dev, PHYCNT, 1, &tmp);
262 do {
263 get_registers(dev, PHYCNT, 1, data);
264 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
265
266 if (i < MII_TIMEOUT) {
267 get_registers(dev, PHYDAT, 2, data);
268 *reg = data[0] | (data[1] << 8);
269 return 0;
270 } else
271 return 1;
272 }
273
274 static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)
275 {
276 int i;
277 u8 data[3], tmp;
278
279 data[0] = phy;
280 *(data + 1) = cpu_to_le16p(&reg);
281 tmp = indx | PHY_WRITE | PHY_GO;
282 i = 0;
283
284 set_registers(dev, PHYADD, sizeof(data), data);
285 set_registers(dev, PHYCNT, 1, &tmp);
286 do {
287 get_registers(dev, PHYCNT, 1, data);
288 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
289
290 if (i < MII_TIMEOUT)
291 return 0;
292 else
293 return 1;
294 }
295
296 static inline void set_ethernet_addr(rtl8150_t * dev)
297 {
298 u8 node_id[6];
299
300 get_registers(dev, IDR, sizeof(node_id), node_id);
301 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
302 }
303
304 static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
305 {
306 struct sockaddr *addr = p;
307 rtl8150_t *dev = netdev_priv(netdev);
308 int i;
309
310 if (netif_running(netdev))
311 return -EBUSY;
312
313 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
314 dbg("%s: Setting MAC address to ", netdev->name);
315 for (i = 0; i < 5; i++)
316 dbg("%02X:", netdev->dev_addr[i]);
317 dbg("%02X\n", netdev->dev_addr[i]);
318 /* Set the IDR registers. */
319 set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr);
320 #ifdef EEPROM_WRITE
321 {
322 u8 cr;
323 /* Get the CR contents. */
324 get_registers(dev, CR, 1, &cr);
325 /* Set the WEPROM bit (eeprom write enable). */
326 cr |= 0x20;
327 set_registers(dev, CR, 1, &cr);
328 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
329 so we need to split them up. */
330 for (i = 0; i * 2 < netdev->addr_len; i++) {
331 set_registers(dev, IDR_EEPROM + (i * 2), 2,
332 netdev->dev_addr + (i * 2));
333 }
334 /* Clear the WEPROM bit (preventing accidental eeprom writes). */
335 cr &= 0xdf;
336 set_registers(dev, CR, 1, &cr);
337 }
338 #endif
339 return 0;
340 }
341
342 static int rtl8150_reset(rtl8150_t * dev)
343 {
344 u8 data = 0x10;
345 int i = HZ;
346
347 set_registers(dev, CR, 1, &data);
348 do {
349 get_registers(dev, CR, 1, &data);
350 } while ((data & 0x10) && --i);
351
352 return (i > 0) ? 1 : 0;
353 }
354
355 static int alloc_all_urbs(rtl8150_t * dev)
356 {
357 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
358 if (!dev->rx_urb)
359 return 0;
360 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
361 if (!dev->tx_urb) {
362 usb_free_urb(dev->rx_urb);
363 return 0;
364 }
365 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
366 if (!dev->intr_urb) {
367 usb_free_urb(dev->rx_urb);
368 usb_free_urb(dev->tx_urb);
369 return 0;
370 }
371 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
372 if (!dev->intr_urb) {
373 usb_free_urb(dev->rx_urb);
374 usb_free_urb(dev->tx_urb);
375 usb_free_urb(dev->intr_urb);
376 return 0;
377 }
378
379 return 1;
380 }
381
382 static void free_all_urbs(rtl8150_t * dev)
383 {
384 usb_free_urb(dev->rx_urb);
385 usb_free_urb(dev->tx_urb);
386 usb_free_urb(dev->intr_urb);
387 usb_free_urb(dev->ctrl_urb);
388 }
389
390 static void unlink_all_urbs(rtl8150_t * dev)
391 {
392 usb_kill_urb(dev->rx_urb);
393 usb_kill_urb(dev->tx_urb);
394 usb_kill_urb(dev->intr_urb);
395 usb_kill_urb(dev->ctrl_urb);
396 }
397
398 static inline struct sk_buff *pull_skb(rtl8150_t *dev)
399 {
400 struct sk_buff *skb;
401 int i;
402
403 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
404 if (dev->rx_skb_pool[i]) {
405 skb = dev->rx_skb_pool[i];
406 dev->rx_skb_pool[i] = NULL;
407 return skb;
408 }
409 }
410 return NULL;
411 }
412
413 static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
414 {
415 rtl8150_t *dev;
416 unsigned pkt_len, res;
417 struct sk_buff *skb;
418 struct net_device *netdev;
419 u16 rx_stat;
420
421 dev = urb->context;
422 if (!dev)
423 return;
424 if (test_bit(RTL8150_UNPLUG, &dev->flags))
425 return;
426 netdev = dev->netdev;
427 if (!netif_device_present(netdev))
428 return;
429
430 switch (urb->status) {
431 case 0:
432 break;
433 case -ENOENT:
434 return; /* the urb is in unlink state */
435 case -ETIMEDOUT:
436 warn("may be reset is needed?..");
437 goto goon;
438 default:
439 warn("Rx status %d", urb->status);
440 goto goon;
441 }
442
443 if (!dev->rx_skb)
444 goto resched;
445 /* protect against short packets (tell me why we got some?!?) */
446 if (urb->actual_length < 4)
447 goto goon;
448
449 res = urb->actual_length;
450 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
451 pkt_len = res - 4;
452
453 skb_put(dev->rx_skb, pkt_len);
454 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
455 netif_rx(dev->rx_skb);
456 dev->stats.rx_packets++;
457 dev->stats.rx_bytes += pkt_len;
458
459 spin_lock(&dev->rx_pool_lock);
460 skb = pull_skb(dev);
461 spin_unlock(&dev->rx_pool_lock);
462 if (!skb)
463 goto resched;
464
465 dev->rx_skb = skb;
466 goon:
467 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
468 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
469 if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
470 set_bit(RX_URB_FAIL, &dev->flags);
471 goto resched;
472 } else {
473 clear_bit(RX_URB_FAIL, &dev->flags);
474 }
475
476 return;
477 resched:
478 tasklet_schedule(&dev->tl);
479 }
480
481 static void rx_fixup(unsigned long data)
482 {
483 rtl8150_t *dev;
484 struct sk_buff *skb;
485
486 dev = (rtl8150_t *)data;
487
488 spin_lock_irq(&dev->rx_pool_lock);
489 fill_skb_pool(dev);
490 spin_unlock_irq(&dev->rx_pool_lock);
491 if (test_bit(RX_URB_FAIL, &dev->flags))
492 if (dev->rx_skb)
493 goto try_again;
494 spin_lock_irq(&dev->rx_pool_lock);
495 skb = pull_skb(dev);
496 spin_unlock_irq(&dev->rx_pool_lock);
497 if (skb == NULL)
498 goto tlsched;
499 dev->rx_skb = skb;
500 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
501 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
502 try_again:
503 if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
504 set_bit(RX_URB_FAIL, &dev->flags);
505 goto tlsched;
506 } else {
507 clear_bit(RX_URB_FAIL, &dev->flags);
508 }
509
510 return;
511 tlsched:
512 tasklet_schedule(&dev->tl);
513 }
514
515 static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
516 {
517 rtl8150_t *dev;
518
519 dev = urb->context;
520 if (!dev)
521 return;
522 dev_kfree_skb_irq(dev->tx_skb);
523 if (!netif_device_present(dev->netdev))
524 return;
525 if (urb->status)
526 info("%s: Tx status %d", dev->netdev->name, urb->status);
527 dev->netdev->trans_start = jiffies;
528 netif_wake_queue(dev->netdev);
529 }
530
531 static void intr_callback(struct urb *urb, struct pt_regs *regs)
532 {
533 rtl8150_t *dev;
534 __u8 *d;
535 int status;
536
537 dev = urb->context;
538 if (!dev)
539 return;
540 switch (urb->status) {
541 case 0: /* success */
542 break;
543 case -ECONNRESET: /* unlink */
544 case -ENOENT:
545 case -ESHUTDOWN:
546 return;
547 /* -EPIPE: should clear the halt */
548 default:
549 info("%s: intr status %d", dev->netdev->name, urb->status);
550 goto resubmit;
551 }
552
553 d = urb->transfer_buffer;
554 if (d[0] & TSR_ERRORS) {
555 dev->stats.tx_errors++;
556 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
557 dev->stats.tx_aborted_errors++;
558 if (d[INT_TSR] & TSR_LCOL)
559 dev->stats.tx_window_errors++;
560 if (d[INT_TSR] & TSR_LOSS_CRS)
561 dev->stats.tx_carrier_errors++;
562 }
563 /* Report link status changes to the network stack */
564 if ((d[INT_MSR] & MSR_LINK) == 0) {
565 if (netif_carrier_ok(dev->netdev)) {
566 netif_carrier_off(dev->netdev);
567 dbg("%s: LINK LOST\n", __func__);
568 }
569 } else {
570 if (!netif_carrier_ok(dev->netdev)) {
571 netif_carrier_on(dev->netdev);
572 dbg("%s: LINK CAME BACK\n", __func__);
573 }
574 }
575
576 resubmit:
577 status = usb_submit_urb (urb, SLAB_ATOMIC);
578 if (status)
579 err ("can't resubmit intr, %s-%s/input0, status %d",
580 dev->udev->bus->bus_name,
581 dev->udev->devpath, status);
582 }
583
584
585 /*
586 **
587 ** network related part of the code
588 **
589 */
590
591 static void fill_skb_pool(rtl8150_t *dev)
592 {
593 struct sk_buff *skb;
594 int i;
595
596 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
597 if (dev->rx_skb_pool[i])
598 continue;
599 skb = dev_alloc_skb(RTL8150_MTU + 2);
600 if (!skb) {
601 return;
602 }
603 skb->dev = dev->netdev;
604 skb_reserve(skb, 2);
605 dev->rx_skb_pool[i] = skb;
606 }
607 }
608
609 static void free_skb_pool(rtl8150_t *dev)
610 {
611 int i;
612
613 for (i = 0; i < RX_SKB_POOL_SIZE; i++)
614 if (dev->rx_skb_pool[i])
615 dev_kfree_skb(dev->rx_skb_pool[i]);
616 }
617
618 static int enable_net_traffic(rtl8150_t * dev)
619 {
620 u8 cr, tcr, rcr, msr;
621
622 if (!rtl8150_reset(dev)) {
623 warn("%s - device reset failed", __FUNCTION__);
624 }
625 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */
626 rcr = 0x9e;
627 dev->rx_creg = cpu_to_le16(rcr);
628 tcr = 0xd8;
629 cr = 0x0c;
630 if (!(rcr & 0x80))
631 set_bit(RTL8150_HW_CRC, &dev->flags);
632 set_registers(dev, RCR, 1, &rcr);
633 set_registers(dev, TCR, 1, &tcr);
634 set_registers(dev, CR, 1, &cr);
635 get_registers(dev, MSR, 1, &msr);
636
637 return 0;
638 }
639
640 static void disable_net_traffic(rtl8150_t * dev)
641 {
642 u8 cr;
643
644 get_registers(dev, CR, 1, &cr);
645 cr &= 0xf3;
646 set_registers(dev, CR, 1, &cr);
647 }
648
649 static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev)
650 {
651 return &((rtl8150_t *)netdev_priv(dev))->stats;
652 }
653
654 static void rtl8150_tx_timeout(struct net_device *netdev)
655 {
656 rtl8150_t *dev = netdev_priv(netdev);
657 warn("%s: Tx timeout.", netdev->name);
658 dev->tx_urb->transfer_flags |= URB_ASYNC_UNLINK;
659 usb_unlink_urb(dev->tx_urb);
660 dev->stats.tx_errors++;
661 }
662
663 static void rtl8150_set_multicast(struct net_device *netdev)
664 {
665 rtl8150_t *dev = netdev_priv(netdev);
666 netif_stop_queue(netdev);
667 if (netdev->flags & IFF_PROMISC) {
668 dev->rx_creg |= cpu_to_le16(0x0001);
669 info("%s: promiscuous mode", netdev->name);
670 } else if ((netdev->mc_count > multicast_filter_limit) ||
671 (netdev->flags & IFF_ALLMULTI)) {
672 dev->rx_creg &= cpu_to_le16(0xfffe);
673 dev->rx_creg |= cpu_to_le16(0x0002);
674 info("%s: allmulti set", netdev->name);
675 } else {
676 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
677 dev->rx_creg &= cpu_to_le16(0x00fc);
678 }
679 async_set_registers(dev, RCR, 2);
680 netif_wake_queue(netdev);
681 }
682
683 static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev)
684 {
685 rtl8150_t *dev = netdev_priv(netdev);
686 int count, res;
687
688 netif_stop_queue(netdev);
689 count = (skb->len < 60) ? 60 : skb->len;
690 count = (count & 0x3f) ? count : count + 1;
691 dev->tx_skb = skb;
692 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),
693 skb->data, count, write_bulk_callback, dev);
694 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
695 warn("failed tx_urb %d\n", res);
696 dev->stats.tx_errors++;
697 netif_start_queue(netdev);
698 } else {
699 dev->stats.tx_packets++;
700 dev->stats.tx_bytes += skb->len;
701 netdev->trans_start = jiffies;
702 }
703
704 return 0;
705 }
706
707
708 static void set_carrier(struct net_device *netdev)
709 {
710 rtl8150_t *dev = netdev_priv(netdev);
711 short tmp;
712
713 get_registers(dev, CSCR, 2, &tmp);
714 if (tmp & CSCR_LINK_STATUS)
715 netif_carrier_on(netdev);
716 else
717 netif_carrier_off(netdev);
718 }
719
720 static int rtl8150_open(struct net_device *netdev)
721 {
722 rtl8150_t *dev = netdev_priv(netdev);
723 int res;
724
725 if (dev->rx_skb == NULL)
726 dev->rx_skb = pull_skb(dev);
727 if (!dev->rx_skb)
728 return -ENOMEM;
729
730 set_registers(dev, IDR, 6, netdev->dev_addr);
731
732 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
733 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
734 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL)))
735 warn("%s: rx_urb submit failed: %d", __FUNCTION__, res);
736 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),
737 dev->intr_buff, INTBUFSIZE, intr_callback,
738 dev, dev->intr_interval);
739 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL)))
740 warn("%s: intr_urb submit failed: %d", __FUNCTION__, res);
741 netif_start_queue(netdev);
742 enable_net_traffic(dev);
743 set_carrier(netdev);
744
745 return res;
746 }
747
748 static int rtl8150_close(struct net_device *netdev)
749 {
750 rtl8150_t *dev = netdev_priv(netdev);
751 int res = 0;
752
753 netif_stop_queue(netdev);
754 if (!test_bit(RTL8150_UNPLUG, &dev->flags))
755 disable_net_traffic(dev);
756 unlink_all_urbs(dev);
757
758 return res;
759 }
760
761 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
762 {
763 rtl8150_t *dev = netdev_priv(netdev);
764
765 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
766 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
767 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info);
768 }
769
770 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
771 {
772 rtl8150_t *dev = netdev_priv(netdev);
773 short lpa, bmcr;
774
775 ecmd->supported = (SUPPORTED_10baseT_Half |
776 SUPPORTED_10baseT_Full |
777 SUPPORTED_100baseT_Half |
778 SUPPORTED_100baseT_Full |
779 SUPPORTED_Autoneg |
780 SUPPORTED_TP | SUPPORTED_MII);
781 ecmd->port = PORT_TP;
782 ecmd->transceiver = XCVR_INTERNAL;
783 ecmd->phy_address = dev->phy;
784 get_registers(dev, BMCR, 2, &bmcr);
785 get_registers(dev, ANLP, 2, &lpa);
786 if (bmcr & BMCR_ANENABLE) {
787 ecmd->autoneg = AUTONEG_ENABLE;
788 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ?
789 SPEED_100 : SPEED_10;
790 if (ecmd->speed == SPEED_100)
791 ecmd->duplex = (lpa & LPA_100FULL) ?
792 DUPLEX_FULL : DUPLEX_HALF;
793 else
794 ecmd->duplex = (lpa & LPA_10FULL) ?
795 DUPLEX_FULL : DUPLEX_HALF;
796 } else {
797 ecmd->autoneg = AUTONEG_DISABLE;
798 ecmd->speed = (bmcr & BMCR_SPEED100) ?
799 SPEED_100 : SPEED_10;
800 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
801 DUPLEX_FULL : DUPLEX_HALF;
802 }
803 return 0;
804 }
805
806 static struct ethtool_ops ops = {
807 .get_drvinfo = rtl8150_get_drvinfo,
808 .get_settings = rtl8150_get_settings,
809 .get_link = ethtool_op_get_link
810 };
811
812 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
813 {
814 rtl8150_t *dev = netdev_priv(netdev);
815 u16 *data = (u16 *) & rq->ifr_ifru;
816 int res = 0;
817
818 switch (cmd) {
819 case SIOCDEVPRIVATE:
820 data[0] = dev->phy;
821 case SIOCDEVPRIVATE + 1:
822 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);
823 break;
824 case SIOCDEVPRIVATE + 2:
825 if (!capable(CAP_NET_ADMIN))
826 return -EPERM;
827 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);
828 break;
829 default:
830 res = -EOPNOTSUPP;
831 }
832
833 return res;
834 }
835
836 static int rtl8150_probe(struct usb_interface *intf,
837 const struct usb_device_id *id)
838 {
839 struct usb_device *udev = interface_to_usbdev(intf);
840 rtl8150_t *dev;
841 struct net_device *netdev;
842
843 netdev = alloc_etherdev(sizeof(rtl8150_t));
844 if (!netdev) {
845 err("Out of memory");
846 return -ENOMEM;
847 }
848
849 dev = netdev_priv(netdev);
850 memset(dev, 0, sizeof(rtl8150_t));
851
852 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
853 if (!dev->intr_buff) {
854 free_netdev(netdev);
855 return -ENOMEM;
856 }
857
858 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
859 spin_lock_init(&dev->rx_pool_lock);
860
861 dev->udev = udev;
862 dev->netdev = netdev;
863 SET_MODULE_OWNER(netdev);
864 netdev->open = rtl8150_open;
865 netdev->stop = rtl8150_close;
866 netdev->do_ioctl = rtl8150_ioctl;
867 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
868 netdev->tx_timeout = rtl8150_tx_timeout;
869 netdev->hard_start_xmit = rtl8150_start_xmit;
870 netdev->set_multicast_list = rtl8150_set_multicast;
871 netdev->set_mac_address = rtl8150_set_mac_address;
872 netdev->get_stats = rtl8150_netdev_stats;
873 netdev->mtu = RTL8150_MTU;
874 SET_ETHTOOL_OPS(netdev, &ops);
875 dev->intr_interval = 100; /* 100ms */
876
877 if (!alloc_all_urbs(dev)) {
878 err("out of memory");
879 goto out;
880 }
881 if (!rtl8150_reset(dev)) {
882 err("couldn't reset the device");
883 goto out1;
884 }
885 fill_skb_pool(dev);
886 set_ethernet_addr(dev);
887 info("%s: rtl8150 is detected", netdev->name);
888
889 usb_set_intfdata(intf, dev);
890 SET_NETDEV_DEV(netdev, &intf->dev);
891 if (register_netdev(netdev) != 0) {
892 err("couldn't register the device");
893 goto out2;
894 }
895 return 0;
896
897 out2:
898 usb_set_intfdata(intf, NULL);
899 free_skb_pool(dev);
900 out1:
901 free_all_urbs(dev);
902 out:
903 kfree(dev->intr_buff);
904 free_netdev(netdev);
905 return -EIO;
906 }
907
908 static void rtl8150_disconnect(struct usb_interface *intf)
909 {
910 rtl8150_t *dev = usb_get_intfdata(intf);
911
912 usb_set_intfdata(intf, NULL);
913 if (dev) {
914 set_bit(RTL8150_UNPLUG, &dev->flags);
915 unregister_netdev(dev->netdev);
916 unlink_all_urbs(dev);
917 free_all_urbs(dev);
918 free_skb_pool(dev);
919 if (dev->rx_skb)
920 dev_kfree_skb(dev->rx_skb);
921 kfree(dev->intr_buff);
922 free_netdev(dev->netdev);
923 }
924 }
925
926 static int __init usb_rtl8150_init(void)
927 {
928 info(DRIVER_DESC " " DRIVER_VERSION);
929 return usb_register(&rtl8150_driver);
930 }
931
932 static void __exit usb_rtl8150_exit(void)
933 {
934 usb_deregister(&rtl8150_driver);
935 }
936
937 module_init(usb_rtl8150_init);
938 module_exit(usb_rtl8150_exit);
939
940 MODULE_AUTHOR(DRIVER_AUTHOR);
941 MODULE_DESCRIPTION(DRIVER_DESC);
942 MODULE_LICENSE("GPL");
linux-next