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USB: cypress driver comment updates
[deliverable/linux.git] / drivers / usb / net / rtl8150.c
CommitLineData
1da177e4
LT		 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
1da177e4
LT		 9#include <linux/sched.h>
10#include <linux/init.h>
11#include <linux/signal.h>
12#include <linux/slab.h>
13#include <linux/module.h>
14#include <linux/netdevice.h>
15#include <linux/etherdevice.h>
16#include <linux/mii.h>
17#include <linux/ethtool.h>
18#include <linux/usb.h>
19#include <asm/uaccess.h>
20
21/* Version Information */
22#define DRIVER_VERSION "v0.6.2 (2004/08/27)"
23#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
24#define DRIVER_DESC "rtl8150 based usb-ethernet driver"
25
26#define IDR 0x0120
27#define MAR 0x0126
28#define CR 0x012e
29#define TCR 0x012f
30#define RCR 0x0130
31#define TSR 0x0132
32#define RSR 0x0133
33#define CON0 0x0135
34#define CON1 0x0136
35#define MSR 0x0137
36#define PHYADD 0x0138
37#define PHYDAT 0x0139
38#define PHYCNT 0x013b
39#define GPPC 0x013d
40#define BMCR 0x0140
41#define BMSR 0x0142
42#define ANAR 0x0144
43#define ANLP 0x0146
44#define AER 0x0148
45#define CSCR 0x014C /* This one has the link status */
46#define CSCR_LINK_STATUS (1 << 3)
47
48#define IDR_EEPROM 0x1202
49
50#define PHY_READ 0
51#define PHY_WRITE 0x20
52#define PHY_GO 0x40
53
54#define MII_TIMEOUT 10
55#define INTBUFSIZE 8
56
57#define RTL8150_REQT_READ 0xc0
58#define RTL8150_REQT_WRITE 0x40
59#define RTL8150_REQ_GET_REGS 0x05
60#define RTL8150_REQ_SET_REGS 0x05
61
62
63/* Transmit status register errors */
64#define TSR_ECOL (1<<5)
65#define TSR_LCOL (1<<4)
66#define TSR_LOSS_CRS (1<<3)
67#define TSR_JBR (1<<2)
68#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
69/* Receive status register errors */
70#define RSR_CRC (1<<2)
71#define RSR_FAE (1<<1)
72#define RSR_ERRORS (RSR_CRC | RSR_FAE)
73
74/* Media status register definitions */
75#define MSR_DUPLEX (1<<4)
76#define MSR_SPEED (1<<3)
77#define MSR_LINK (1<<2)
78
79/* Interrupt pipe data */
80#define INT_TSR 0x00
81#define INT_RSR 0x01
82#define INT_MSR 0x02
83#define INT_WAKSR 0x03
84#define INT_TXOK_CNT 0x04
85#define INT_RXLOST_CNT 0x05
86#define INT_CRERR_CNT 0x06
87#define INT_COL_CNT 0x07
88
89/* Transmit status register errors */
90#define TSR_ECOL (1<<5)
91#define TSR_LCOL (1<<4)
92#define TSR_LOSS_CRS (1<<3)
93#define TSR_JBR (1<<2)
94#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
95/* Receive status register errors */
96#define RSR_CRC (1<<2)
97#define RSR_FAE (1<<1)
98#define RSR_ERRORS (RSR_CRC | RSR_FAE)
99
100/* Media status register definitions */
101#define MSR_DUPLEX (1<<4)
102#define MSR_SPEED (1<<3)
103#define MSR_LINK (1<<2)
104
105/* Interrupt pipe data */
106#define INT_TSR 0x00
107#define INT_RSR 0x01
108#define INT_MSR 0x02
109#define INT_WAKSR 0x03
110#define INT_TXOK_CNT 0x04
111#define INT_RXLOST_CNT 0x05
112#define INT_CRERR_CNT 0x06
113#define INT_COL_CNT 0x07
114
115
116#define RTL8150_MTU 1540
117#define RTL8150_TX_TIMEOUT (HZ)
118#define RX_SKB_POOL_SIZE 4
119
120/* rtl8150 flags */
121#define RTL8150_HW_CRC 0
122#define RX_REG_SET 1
123#define RTL8150_UNPLUG 2
124#define RX_URB_FAIL 3
125
126/* Define these values to match your device */
127#define VENDOR_ID_REALTEK 0x0bda
128#define VENDOR_ID_MELCO 0x0411
129#define VENDOR_ID_MICRONET 0x3980
130#define VENDOR_ID_LONGSHINE 0x07b8
b6c2799d 131#define VENDOR_ID_ZYXEL 0x0586
1da177e4
LT		 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
b6c2799d 137#define PRODUCT_ID_PRESTIGE 0x401a
1da177e4
LT		 138
139#undef EEPROM_WRITE
140
141/* table of devices that work with this driver */
142static 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)},
b6c2799d 147 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)},
1da177e4
LT		 148 {}
149};
150
151MODULE_DEVICE_TABLE(usb, rtl8150_table);
152
153struct rtl8150 {
154 unsigned long flags;
155 struct usb_device *udev;
156 struct tasklet_struct tl;
157 struct net_device_stats stats;
158 struct net_device *netdev;
159 struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb;
160 struct sk_buff *tx_skb, *rx_skb;
161 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE];
162 spinlock_t rx_pool_lock;
163 struct usb_ctrlrequest dr;
164 int intr_interval;
165 __le16 rx_creg;
166 u8 *intr_buff;
167 u8 phy;
168};
169
170typedef struct rtl8150 rtl8150_t;
171
1da177e4
LT		 172static void fill_skb_pool(rtl8150_t *);
173static void free_skb_pool(rtl8150_t *);
174static inline struct sk_buff *pull_skb(rtl8150_t *);
175static void rtl8150_disconnect(struct usb_interface *intf);
176static int rtl8150_probe(struct usb_interface *intf,
177 const struct usb_device_id *id);
178
179static const char driver_name [] = "rtl8150";
180
181static struct usb_driver rtl8150_driver = {
1da177e4
LT		 182 .name = driver_name,
183 .probe = rtl8150_probe,
184 .disconnect = rtl8150_disconnect,
185 .id_table = rtl8150_table,
186};
187
188/*
189**
190** device related part of the code
191**
192*/
193static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
194{
195 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
196 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
197 indx, 0, data, size, 500);
198}
199
200static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
201{
202 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
203 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
204 indx, 0, data, size, 500);
205}
206
207static void ctrl_callback(struct urb *urb, struct pt_regs *regs)
208{
209 rtl8150_t *dev;
210
211 switch (urb->status) {
212 case 0:
213 break;
214 case -EINPROGRESS:
215 break;
216 case -ENOENT:
217 break;
218 default:
219 warn("ctrl urb status %d", urb->status);
220 }
221 dev = urb->context;
222 clear_bit(RX_REG_SET, &dev->flags);
223}
224
225static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size)
226{
227 int ret;
228
229 if (test_bit(RX_REG_SET, &dev->flags))
230 return -EAGAIN;
231
232 dev->dr.bRequestType = RTL8150_REQT_WRITE;
233 dev->dr.bRequest = RTL8150_REQ_SET_REGS;
234 dev->dr.wValue = cpu_to_le16(indx);
235 dev->dr.wIndex = 0;
236 dev->dr.wLength = cpu_to_le16(size);
237 dev->ctrl_urb->transfer_buffer_length = size;
238 usb_fill_control_urb(dev->ctrl_urb, dev->udev,
239 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr,
240 &dev->rx_creg, size, ctrl_callback, dev);
241 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC)))
242 err("control request submission failed: %d", ret);
243 else
244 set_bit(RX_REG_SET, &dev->flags);
245
246 return ret;
247}
248
249static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)
250{
251 int i;
252 u8 data[3], tmp;
253
254 data[0] = phy;
255 data[1] = data[2] = 0;
256 tmp = indx | PHY_READ | PHY_GO;
257 i = 0;
258
259 set_registers(dev, PHYADD, sizeof(data), data);
260 set_registers(dev, PHYCNT, 1, &tmp);
261 do {
262 get_registers(dev, PHYCNT, 1, data);
263 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
264
265 if (i < MII_TIMEOUT) {
266 get_registers(dev, PHYDAT, 2, data);
267 *reg = data[0] | (data[1] << 8);
268 return 0;
269 } else
270 return 1;
271}
272
273static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)
274{
275 int i;
276 u8 data[3], tmp;
277
278 data[0] = phy;
279 *(data + 1) = cpu_to_le16p(&reg);
280 tmp = indx | PHY_WRITE | PHY_GO;
281 i = 0;
282
283 set_registers(dev, PHYADD, sizeof(data), data);
284 set_registers(dev, PHYCNT, 1, &tmp);
285 do {
286 get_registers(dev, PHYCNT, 1, data);
287 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
288
289 if (i < MII_TIMEOUT)
290 return 0;
291 else
292 return 1;
293}
294
295static inline void set_ethernet_addr(rtl8150_t * dev)
296{
297 u8 node_id[6];
298
299 get_registers(dev, IDR, sizeof(node_id), node_id);
300 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
301}
302
303static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
304{
305 struct sockaddr *addr = p;
306 rtl8150_t *dev = netdev_priv(netdev);
307 int i;
308
309 if (netif_running(netdev))
310 return -EBUSY;
311
312 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
313 dbg("%s: Setting MAC address to ", netdev->name);
314 for (i = 0; i < 5; i++)
315 dbg("%02X:", netdev->dev_addr[i]);
316 dbg("%02X\n", netdev->dev_addr[i]);
317 /* Set the IDR registers. */
318 set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr);
319#ifdef EEPROM_WRITE
320 {
321 u8 cr;
322 /* Get the CR contents. */
323 get_registers(dev, CR, 1, &cr);
324 /* Set the WEPROM bit (eeprom write enable). */
325 cr |= 0x20;
326 set_registers(dev, CR, 1, &cr);
327 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
328 so we need to split them up. */
329 for (i = 0; i * 2 < netdev->addr_len; i++) {
330 set_registers(dev, IDR_EEPROM + (i * 2), 2,
331 netdev->dev_addr + (i * 2));
332 }
333 /* Clear the WEPROM bit (preventing accidental eeprom writes). */
334 cr &= 0xdf;
335 set_registers(dev, CR, 1, &cr);
336 }
337#endif
338 return 0;
339}
340
341static int rtl8150_reset(rtl8150_t * dev)
342{
343 u8 data = 0x10;
344 int i = HZ;
345
346 set_registers(dev, CR, 1, &data);
347 do {
348 get_registers(dev, CR, 1, &data);
349 } while ((data & 0x10) && --i);
350
351 return (i > 0) ? 1 : 0;
352}
353
354static int alloc_all_urbs(rtl8150_t * dev)
355{
356 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
357 if (!dev->rx_urb)
358 return 0;
359 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
360 if (!dev->tx_urb) {
361 usb_free_urb(dev->rx_urb);
362 return 0;
363 }
364 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
365 if (!dev->intr_urb) {
366 usb_free_urb(dev->rx_urb);
367 usb_free_urb(dev->tx_urb);
368 return 0;
369 }
370 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
371 if (!dev->intr_urb) {
372 usb_free_urb(dev->rx_urb);
373 usb_free_urb(dev->tx_urb);
374 usb_free_urb(dev->intr_urb);
375 return 0;
376 }
377
378 return 1;
379}
380
381static void free_all_urbs(rtl8150_t * dev)
382{
383 usb_free_urb(dev->rx_urb);
384 usb_free_urb(dev->tx_urb);
385 usb_free_urb(dev->intr_urb);
386 usb_free_urb(dev->ctrl_urb);
387}
388
389static void unlink_all_urbs(rtl8150_t * dev)
390{
391 usb_kill_urb(dev->rx_urb);
392 usb_kill_urb(dev->tx_urb);
393 usb_kill_urb(dev->intr_urb);
394 usb_kill_urb(dev->ctrl_urb);
395}
396
397static inline struct sk_buff *pull_skb(rtl8150_t *dev)
398{
399 struct sk_buff *skb;
400 int i;
401
402 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
403 if (dev->rx_skb_pool[i]) {
404 skb = dev->rx_skb_pool[i];
405 dev->rx_skb_pool[i] = NULL;
406 return skb;
407 }
408 }
409 return NULL;
410}
411
412static void read_bulk_callback(struct urb *urb, struct pt_regs *regs)
413{
414 rtl8150_t *dev;
415 unsigned pkt_len, res;
416 struct sk_buff *skb;
417 struct net_device *netdev;
418 u16 rx_stat;
419
420 dev = urb->context;
421 if (!dev)
422 return;
423 if (test_bit(RTL8150_UNPLUG, &dev->flags))
424 return;
425 netdev = dev->netdev;
426 if (!netif_device_present(netdev))
427 return;
428
429 switch (urb->status) {
430 case 0:
431 break;
432 case -ENOENT:
433 return; /* the urb is in unlink state */
434 case -ETIMEDOUT:
435 warn("may be reset is needed?..");
436 goto goon;
437 default:
438 warn("Rx status %d", urb->status);
439 goto goon;
440 }
441
442 if (!dev->rx_skb)
443 goto resched;
444 /* protect against short packets (tell me why we got some?!?) */
445 if (urb->actual_length < 4)
446 goto goon;
447
448 res = urb->actual_length;
449 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
450 pkt_len = res - 4;
451
452 skb_put(dev->rx_skb, pkt_len);
453 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
454 netif_rx(dev->rx_skb);
455 dev->stats.rx_packets++;
456 dev->stats.rx_bytes += pkt_len;
457
458 spin_lock(&dev->rx_pool_lock);
459 skb = pull_skb(dev);
460 spin_unlock(&dev->rx_pool_lock);
461 if (!skb)
462 goto resched;
463
464 dev->rx_skb = skb;
465goon:
466 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
467 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
468 if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
469 set_bit(RX_URB_FAIL, &dev->flags);
470 goto resched;
471 } else {
472 clear_bit(RX_URB_FAIL, &dev->flags);
473 }
474
475 return;
476resched:
477 tasklet_schedule(&dev->tl);
478}
479
480static void rx_fixup(unsigned long data)
481{
482 rtl8150_t *dev;
483 struct sk_buff *skb;
484
485 dev = (rtl8150_t *)data;
486
487 spin_lock_irq(&dev->rx_pool_lock);
488 fill_skb_pool(dev);
489 spin_unlock_irq(&dev->rx_pool_lock);
490 if (test_bit(RX_URB_FAIL, &dev->flags))
491 if (dev->rx_skb)
492 goto try_again;
493 spin_lock_irq(&dev->rx_pool_lock);
494 skb = pull_skb(dev);
495 spin_unlock_irq(&dev->rx_pool_lock);
496 if (skb == NULL)
497 goto tlsched;
498 dev->rx_skb = skb;
499 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
500 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
501try_again:
502 if (usb_submit_urb(dev->rx_urb, GFP_ATOMIC)) {
503 set_bit(RX_URB_FAIL, &dev->flags);
504 goto tlsched;
505 } else {
506 clear_bit(RX_URB_FAIL, &dev->flags);
507 }
508
509 return;
510tlsched:
511 tasklet_schedule(&dev->tl);
512}
513
514static void write_bulk_callback(struct urb *urb, struct pt_regs *regs)
515{
516 rtl8150_t *dev;
517
518 dev = urb->context;
519 if (!dev)
520 return;
521 dev_kfree_skb_irq(dev->tx_skb);
522 if (!netif_device_present(dev->netdev))
523 return;
524 if (urb->status)
525 info("%s: Tx status %d", dev->netdev->name, urb->status);
526 dev->netdev->trans_start = jiffies;
527 netif_wake_queue(dev->netdev);
528}
529
530static void intr_callback(struct urb *urb, struct pt_regs *regs)
531{
532 rtl8150_t *dev;
533 __u8 *d;
534 int status;
535
536 dev = urb->context;
537 if (!dev)
538 return;
539 switch (urb->status) {
540 case 0: /* success */
541 break;
542 case -ECONNRESET: /* unlink */
543 case -ENOENT:
544 case -ESHUTDOWN:
545 return;
546 /* -EPIPE: should clear the halt */
547 default:
548 info("%s: intr status %d", dev->netdev->name, urb->status);
549 goto resubmit;
550 }
551
552 d = urb->transfer_buffer;
553 if (d[0] & TSR_ERRORS) {
554 dev->stats.tx_errors++;
555 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
556 dev->stats.tx_aborted_errors++;
557 if (d[INT_TSR] & TSR_LCOL)
558 dev->stats.tx_window_errors++;
559 if (d[INT_TSR] & TSR_LOSS_CRS)
560 dev->stats.tx_carrier_errors++;
561 }
562 /* Report link status changes to the network stack */
563 if ((d[INT_MSR] & MSR_LINK) == 0) {
564 if (netif_carrier_ok(dev->netdev)) {
565 netif_carrier_off(dev->netdev);
566 dbg("%s: LINK LOST\n", __func__);
567 }
568 } else {
569 if (!netif_carrier_ok(dev->netdev)) {
570 netif_carrier_on(dev->netdev);
571 dbg("%s: LINK CAME BACK\n", __func__);
572 }
573 }
574
575resubmit:
576 status = usb_submit_urb (urb, SLAB_ATOMIC);
577 if (status)
578 err ("can't resubmit intr, %s-%s/input0, status %d",
579 dev->udev->bus->bus_name,
580 dev->udev->devpath, status);
581}
582
583
584/*
585**
586** network related part of the code
587**
588*/
589
590static void fill_skb_pool(rtl8150_t *dev)
591{
592 struct sk_buff *skb;
593 int i;
594
595 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
596 if (dev->rx_skb_pool[i])
597 continue;
598 skb = dev_alloc_skb(RTL8150_MTU + 2);
599 if (!skb) {
600 return;
601 }
602 skb->dev = dev->netdev;
603 skb_reserve(skb, 2);
604 dev->rx_skb_pool[i] = skb;
605 }
606}
607
608static void free_skb_pool(rtl8150_t *dev)
609{
610 int i;
611
612 for (i = 0; i < RX_SKB_POOL_SIZE; i++)
613 if (dev->rx_skb_pool[i])
614 dev_kfree_skb(dev->rx_skb_pool[i]);
615}
616
617static int enable_net_traffic(rtl8150_t * dev)
618{
619 u8 cr, tcr, rcr, msr;
620
621 if (!rtl8150_reset(dev)) {
622 warn("%s - device reset failed", __FUNCTION__);
623 }
624 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */
625 rcr = 0x9e;
626 dev->rx_creg = cpu_to_le16(rcr);
627 tcr = 0xd8;
628 cr = 0x0c;
629 if (!(rcr & 0x80))
630 set_bit(RTL8150_HW_CRC, &dev->flags);
631 set_registers(dev, RCR, 1, &rcr);
632 set_registers(dev, TCR, 1, &tcr);
633 set_registers(dev, CR, 1, &cr);
634 get_registers(dev, MSR, 1, &msr);
635
636 return 0;
637}
638
639static void disable_net_traffic(rtl8150_t * dev)
640{
641 u8 cr;
642
643 get_registers(dev, CR, 1, &cr);
644 cr &= 0xf3;
645 set_registers(dev, CR, 1, &cr);
646}
647
648static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev)
649{
650 return &((rtl8150_t *)netdev_priv(dev))->stats;
651}
652
653static void rtl8150_tx_timeout(struct net_device *netdev)
654{
655 rtl8150_t *dev = netdev_priv(netdev);
656 warn("%s: Tx timeout.", netdev->name);
1da177e4
LT		 657 usb_unlink_urb(dev->tx_urb);
658 dev->stats.tx_errors++;
659}
660
661static 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);
ae0a97bf 668 } else if (netdev->mc_count ||
1da177e4
LT		 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
681static 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
706static 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
718static 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
746static 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
759static 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
768static 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
804static 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
810static 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
834static 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);
1da177e4
LT		 885
886 usb_set_intfdata(intf, dev);
887 SET_NETDEV_DEV(netdev, &intf->dev);
888 if (register_netdev(netdev) != 0) {
889 err("couldn't register the device");
890 goto out2;
891 }
09abfa80
PM		 892
893 info("%s: rtl8150 is detected", netdev->name);
894
1da177e4
LT		 895 return 0;
896
897out2:
898 usb_set_intfdata(intf, NULL);
899 free_skb_pool(dev);
900out1:
901 free_all_urbs(dev);
902out:
903 kfree(dev->intr_buff);
904 free_netdev(netdev);
905 return -EIO;
906}
907
908static 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);
8da608ca 915 tasklet_disable(&dev->tl);
1da177e4
LT		 916 unregister_netdev(dev->netdev);
917 unlink_all_urbs(dev);
918 free_all_urbs(dev);
919 free_skb_pool(dev);
920 if (dev->rx_skb)
921 dev_kfree_skb(dev->rx_skb);
922 kfree(dev->intr_buff);
923 free_netdev(dev->netdev);
924 }
925}
926
927static int __init usb_rtl8150_init(void)
928{
929 info(DRIVER_DESC " " DRIVER_VERSION);
930 return usb_register(&rtl8150_driver);
931}
932
933static void __exit usb_rtl8150_exit(void)
934{
935 usb_deregister(&rtl8150_driver);
936}
937
938module_init(usb_rtl8150_init);
939module_exit(usb_rtl8150_exit);
940
941MODULE_AUTHOR(DRIVER_AUTHOR);
942MODULE_DESCRIPTION(DRIVER_DESC);
943MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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