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ARM: 7409/1: Do not call flush_cache_user_range with mmap_sem held
[linux/fpc-iii.git] / drivers / net / usb / rtl8150.c
blobef3b236b51457d49bbd59ddef6a4dbd648c24dd1
1 /*
2 * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * version 2 as published by the Free Software Foundation.
7 */
8
9 #include <linux/init.h>
10 #include <linux/signal.h>
11 #include <linux/slab.h>
12 #include <linux/module.h>
13 #include <linux/netdevice.h>
14 #include <linux/etherdevice.h>
15 #include <linux/mii.h>
16 #include <linux/ethtool.h>
17 #include <linux/usb.h>
18 #include <asm/uaccess.h>
19
20 /* Version Information */
21 #define DRIVER_VERSION "v0.6.2 (2004/08/27)"
22 #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
23 #define DRIVER_DESC "rtl8150 based usb-ethernet driver"
24
25 #define IDR 0x0120
26 #define MAR 0x0126
27 #define CR 0x012e
28 #define TCR 0x012f
29 #define RCR 0x0130
30 #define TSR 0x0132
31 #define RSR 0x0133
32 #define CON0 0x0135
33 #define CON1 0x0136
34 #define MSR 0x0137
35 #define PHYADD 0x0138
36 #define PHYDAT 0x0139
37 #define PHYCNT 0x013b
38 #define GPPC 0x013d
39 #define BMCR 0x0140
40 #define BMSR 0x0142
41 #define ANAR 0x0144
42 #define ANLP 0x0146
43 #define AER 0x0148
44 #define CSCR 0x014C /* This one has the link status */
45 #define CSCR_LINK_STATUS (1 << 3)
46
47 #define IDR_EEPROM 0x1202
48
49 #define PHY_READ 0
50 #define PHY_WRITE 0x20
51 #define PHY_GO 0x40
52
53 #define MII_TIMEOUT 10
54 #define INTBUFSIZE 8
55
56 #define RTL8150_REQT_READ 0xc0
57 #define RTL8150_REQT_WRITE 0x40
58 #define RTL8150_REQ_GET_REGS 0x05
59 #define RTL8150_REQ_SET_REGS 0x05
60
61
62 /* Transmit status register errors */
63 #define TSR_ECOL (1<<5)
64 #define TSR_LCOL (1<<4)
65 #define TSR_LOSS_CRS (1<<3)
66 #define TSR_JBR (1<<2)
67 #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
68 /* Receive status register errors */
69 #define RSR_CRC (1<<2)
70 #define RSR_FAE (1<<1)
71 #define RSR_ERRORS (RSR_CRC | RSR_FAE)
72
73 /* Media status register definitions */
74 #define MSR_DUPLEX (1<<4)
75 #define MSR_SPEED (1<<3)
76 #define MSR_LINK (1<<2)
77
78 /* Interrupt pipe data */
79 #define INT_TSR 0x00
80 #define INT_RSR 0x01
81 #define INT_MSR 0x02
82 #define INT_WAKSR 0x03
83 #define INT_TXOK_CNT 0x04
84 #define INT_RXLOST_CNT 0x05
85 #define INT_CRERR_CNT 0x06
86 #define INT_COL_CNT 0x07
87
88 /* Transmit status register errors */
89 #define TSR_ECOL (1<<5)
90 #define TSR_LCOL (1<<4)
91 #define TSR_LOSS_CRS (1<<3)
92 #define TSR_JBR (1<<2)
93 #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
94 /* Receive status register errors */
95 #define RSR_CRC (1<<2)
96 #define RSR_FAE (1<<1)
97 #define RSR_ERRORS (RSR_CRC | RSR_FAE)
98
99 /* Media status register definitions */
100 #define MSR_DUPLEX (1<<4)
101 #define MSR_SPEED (1<<3)
102 #define MSR_LINK (1<<2)
103
104 /* Interrupt pipe data */
105 #define INT_TSR 0x00
106 #define INT_RSR 0x01
107 #define INT_MSR 0x02
108 #define INT_WAKSR 0x03
109 #define INT_TXOK_CNT 0x04
110 #define INT_RXLOST_CNT 0x05
111 #define INT_CRERR_CNT 0x06
112 #define INT_COL_CNT 0x07
113
114
115 #define RTL8150_MTU 1540
116 #define RTL8150_TX_TIMEOUT (HZ)
117 #define RX_SKB_POOL_SIZE 4
118
119 /* rtl8150 flags */
120 #define RTL8150_HW_CRC 0
121 #define RX_REG_SET 1
122 #define RTL8150_UNPLUG 2
123 #define RX_URB_FAIL 3
124
125 /* Define these values to match your device */
126 #define VENDOR_ID_REALTEK 0x0bda
127 #define VENDOR_ID_MELCO 0x0411
128 #define VENDOR_ID_MICRONET 0x3980
129 #define VENDOR_ID_LONGSHINE 0x07b8
130 #define VENDOR_ID_OQO 0x1557
131 #define VENDOR_ID_ZYXEL 0x0586
132
133 #define PRODUCT_ID_RTL8150 0x8150
134 #define PRODUCT_ID_LUAKTX 0x0012
135 #define PRODUCT_ID_LCS8138TX 0x401a
136 #define PRODUCT_ID_SP128AR 0x0003
137 #define PRODUCT_ID_PRESTIGE 0x401a
138
139 #undef EEPROM_WRITE
140
141 /* table of devices that work with this driver */
142 static struct usb_device_id rtl8150_table[] = {
143 {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)},
144 {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)},
145 {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)},
146 {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)},
147 {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)},
148 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)},
149 {}
150 };
151
152 MODULE_DEVICE_TABLE(usb, rtl8150_table);
153
154 struct rtl8150 {
155 unsigned long flags;
156 struct usb_device *udev;
157 struct tasklet_struct tl;
158 struct net_device *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
170 typedef struct rtl8150 rtl8150_t;
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 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message);
179 static int rtl8150_resume(struct usb_interface *intf);
180
181 static const char driver_name [] = "rtl8150";
182
183 static struct usb_driver rtl8150_driver = {
184 .name = driver_name,
185 .probe = rtl8150_probe,
186 .disconnect = rtl8150_disconnect,
187 .id_table = rtl8150_table,
188 .suspend = rtl8150_suspend,
189 .resume = rtl8150_resume
190 };
191
192 /*
193 **
194 ** device related part of the code
195 **
196 */
197 static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
198 {
199 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
200 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
201 indx, 0, data, size, 500);
202 }
203
204 static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
205 {
206 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
207 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
208 indx, 0, data, size, 500);
209 }
210
211 static void ctrl_callback(struct urb *urb)
212 {
213 rtl8150_t *dev;
214 int status = urb->status;
215
216 switch (status) {
217 case 0:
218 break;
219 case -EINPROGRESS:
220 break;
221 case -ENOENT:
222 break;
223 default:
224 if (printk_ratelimit())
225 dev_warn(&urb->dev->dev, "ctrl urb status %d\n", status);
226 }
227 dev = urb->context;
228 clear_bit(RX_REG_SET, &dev->flags);
229 }
230
231 static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size)
232 {
233 int ret;
234
235 if (test_bit(RX_REG_SET, &dev->flags))
236 return -EAGAIN;
237
238 dev->dr.bRequestType = RTL8150_REQT_WRITE;
239 dev->dr.bRequest = RTL8150_REQ_SET_REGS;
240 dev->dr.wValue = cpu_to_le16(indx);
241 dev->dr.wIndex = 0;
242 dev->dr.wLength = cpu_to_le16(size);
243 dev->ctrl_urb->transfer_buffer_length = size;
244 usb_fill_control_urb(dev->ctrl_urb, dev->udev,
245 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr,
246 &dev->rx_creg, size, ctrl_callback, dev);
247 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC))) {
248 if (ret == -ENODEV)
249 netif_device_detach(dev->netdev);
250 err("control request submission failed: %d", ret);
251 } else
252 set_bit(RX_REG_SET, &dev->flags);
253
254 return ret;
255 }
256
257 static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)
258 {
259 int i;
260 u8 data[3], tmp;
261
262 data[0] = phy;
263 data[1] = data[2] = 0;
264 tmp = indx | PHY_READ | PHY_GO;
265 i = 0;
266
267 set_registers(dev, PHYADD, sizeof(data), data);
268 set_registers(dev, PHYCNT, 1, &tmp);
269 do {
270 get_registers(dev, PHYCNT, 1, data);
271 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
272
273 if (i <= MII_TIMEOUT) {
274 get_registers(dev, PHYDAT, 2, data);
275 *reg = data[0] | (data[1] << 8);
276 return 0;
277 } else
278 return 1;
279 }
280
281 static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)
282 {
283 int i;
284 u8 data[3], tmp;
285
286 data[0] = phy;
287 data[1] = reg & 0xff;
288 data[2] = (reg >> 8) & 0xff;
289 tmp = indx | PHY_WRITE | PHY_GO;
290 i = 0;
291
292 set_registers(dev, PHYADD, sizeof(data), data);
293 set_registers(dev, PHYCNT, 1, &tmp);
294 do {
295 get_registers(dev, PHYCNT, 1, data);
296 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
297
298 if (i <= MII_TIMEOUT)
299 return 0;
300 else
301 return 1;
302 }
303
304 static inline void set_ethernet_addr(rtl8150_t * dev)
305 {
306 u8 node_id[6];
307
308 get_registers(dev, IDR, sizeof(node_id), node_id);
309 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
310 }
311
312 static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
313 {
314 struct sockaddr *addr = p;
315 rtl8150_t *dev = netdev_priv(netdev);
316
317 if (netif_running(netdev))
318 return -EBUSY;
319
320 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
321 dbg("%s: Setting MAC address to %pM\n", netdev->name, netdev->dev_addr);
322 /* Set the IDR registers. */
323 set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr);
324 #ifdef EEPROM_WRITE
325 {
326 int i;
327 u8 cr;
328 /* Get the CR contents. */
329 get_registers(dev, CR, 1, &cr);
330 /* Set the WEPROM bit (eeprom write enable). */
331 cr |= 0x20;
332 set_registers(dev, CR, 1, &cr);
333 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
334 so we need to split them up. */
335 for (i = 0; i * 2 < netdev->addr_len; i++) {
336 set_registers(dev, IDR_EEPROM + (i * 2), 2,
337 netdev->dev_addr + (i * 2));
338 }
339 /* Clear the WEPROM bit (preventing accidental eeprom writes). */
340 cr &= 0xdf;
341 set_registers(dev, CR, 1, &cr);
342 }
343 #endif
344 return 0;
345 }
346
347 static int rtl8150_reset(rtl8150_t * dev)
348 {
349 u8 data = 0x10;
350 int i = HZ;
351
352 set_registers(dev, CR, 1, &data);
353 do {
354 get_registers(dev, CR, 1, &data);
355 } while ((data & 0x10) && --i);
356
357 return (i > 0) ? 1 : 0;
358 }
359
360 static int alloc_all_urbs(rtl8150_t * dev)
361 {
362 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
363 if (!dev->rx_urb)
364 return 0;
365 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
366 if (!dev->tx_urb) {
367 usb_free_urb(dev->rx_urb);
368 return 0;
369 }
370 dev->intr_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 return 0;
375 }
376 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
377 if (!dev->ctrl_urb) {
378 usb_free_urb(dev->rx_urb);
379 usb_free_urb(dev->tx_urb);
380 usb_free_urb(dev->intr_urb);
381 return 0;
382 }
383
384 return 1;
385 }
386
387 static void free_all_urbs(rtl8150_t * dev)
388 {
389 usb_free_urb(dev->rx_urb);
390 usb_free_urb(dev->tx_urb);
391 usb_free_urb(dev->intr_urb);
392 usb_free_urb(dev->ctrl_urb);
393 }
394
395 static void unlink_all_urbs(rtl8150_t * dev)
396 {
397 usb_kill_urb(dev->rx_urb);
398 usb_kill_urb(dev->tx_urb);
399 usb_kill_urb(dev->intr_urb);
400 usb_kill_urb(dev->ctrl_urb);
401 }
402
403 static inline struct sk_buff *pull_skb(rtl8150_t *dev)
404 {
405 struct sk_buff *skb;
406 int i;
407
408 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
409 if (dev->rx_skb_pool[i]) {
410 skb = dev->rx_skb_pool[i];
411 dev->rx_skb_pool[i] = NULL;
412 return skb;
413 }
414 }
415 return NULL;
416 }
417
418 static void read_bulk_callback(struct urb *urb)
419 {
420 rtl8150_t *dev;
421 unsigned pkt_len, res;
422 struct sk_buff *skb;
423 struct net_device *netdev;
424 u16 rx_stat;
425 int status = urb->status;
426 int result;
427
428 dev = urb->context;
429 if (!dev)
430 return;
431 if (test_bit(RTL8150_UNPLUG, &dev->flags))
432 return;
433 netdev = dev->netdev;
434 if (!netif_device_present(netdev))
435 return;
436
437 switch (status) {
438 case 0:
439 break;
440 case -ENOENT:
441 return; /* the urb is in unlink state */
442 case -ETIME:
443 if (printk_ratelimit())
444 dev_warn(&urb->dev->dev, "may be reset is needed?..\n");
445 goto goon;
446 default:
447 if (printk_ratelimit())
448 dev_warn(&urb->dev->dev, "Rx status %d\n", status);
449 goto goon;
450 }
451
452 if (!dev->rx_skb)
453 goto resched;
454 /* protect against short packets (tell me why we got some?!?) */
455 if (urb->actual_length < 4)
456 goto goon;
457
458 res = urb->actual_length;
459 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
460 pkt_len = res - 4;
461
462 skb_put(dev->rx_skb, pkt_len);
463 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
464 netif_rx(dev->rx_skb);
465 netdev->stats.rx_packets++;
466 netdev->stats.rx_bytes += pkt_len;
467
468 spin_lock(&dev->rx_pool_lock);
469 skb = pull_skb(dev);
470 spin_unlock(&dev->rx_pool_lock);
471 if (!skb)
472 goto resched;
473
474 dev->rx_skb = skb;
475 goon:
476 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
477 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
478 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);
479 if (result == -ENODEV)
480 netif_device_detach(dev->netdev);
481 else if (result) {
482 set_bit(RX_URB_FAIL, &dev->flags);
483 goto resched;
484 } else {
485 clear_bit(RX_URB_FAIL, &dev->flags);
486 }
487
488 return;
489 resched:
490 tasklet_schedule(&dev->tl);
491 }
492
493 static void rx_fixup(unsigned long data)
494 {
495 rtl8150_t *dev;
496 struct sk_buff *skb;
497 int status;
498
499 dev = (rtl8150_t *)data;
500
501 spin_lock_irq(&dev->rx_pool_lock);
502 fill_skb_pool(dev);
503 spin_unlock_irq(&dev->rx_pool_lock);
504 if (test_bit(RX_URB_FAIL, &dev->flags))
505 if (dev->rx_skb)
506 goto try_again;
507 spin_lock_irq(&dev->rx_pool_lock);
508 skb = pull_skb(dev);
509 spin_unlock_irq(&dev->rx_pool_lock);
510 if (skb == NULL)
511 goto tlsched;
512 dev->rx_skb = skb;
513 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
514 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
515 try_again:
516 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);
517 if (status == -ENODEV) {
518 netif_device_detach(dev->netdev);
519 } else if (status) {
520 set_bit(RX_URB_FAIL, &dev->flags);
521 goto tlsched;
522 } else {
523 clear_bit(RX_URB_FAIL, &dev->flags);
524 }
525
526 return;
527 tlsched:
528 tasklet_schedule(&dev->tl);
529 }
530
531 static void write_bulk_callback(struct urb *urb)
532 {
533 rtl8150_t *dev;
534 int status = urb->status;
535
536 dev = urb->context;
537 if (!dev)
538 return;
539 dev_kfree_skb_irq(dev->tx_skb);
540 if (!netif_device_present(dev->netdev))
541 return;
542 if (status)
543 dev_info(&urb->dev->dev, "%s: Tx status %d\n",
544 dev->netdev->name, status);
545 dev->netdev->trans_start = jiffies;
546 netif_wake_queue(dev->netdev);
547 }
548
549 static void intr_callback(struct urb *urb)
550 {
551 rtl8150_t *dev;
552 __u8 *d;
553 int status = urb->status;
554 int res;
555
556 dev = urb->context;
557 if (!dev)
558 return;
559 switch (status) {
560 case 0: /* success */
561 break;
562 case -ECONNRESET: /* unlink */
563 case -ENOENT:
564 case -ESHUTDOWN:
565 return;
566 /* -EPIPE: should clear the halt */
567 default:
568 dev_info(&urb->dev->dev, "%s: intr status %d\n",
569 dev->netdev->name, status);
570 goto resubmit;
571 }
572
573 d = urb->transfer_buffer;
574 if (d[0] & TSR_ERRORS) {
575 dev->netdev->stats.tx_errors++;
576 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
577 dev->netdev->stats.tx_aborted_errors++;
578 if (d[INT_TSR] & TSR_LCOL)
579 dev->netdev->stats.tx_window_errors++;
580 if (d[INT_TSR] & TSR_LOSS_CRS)
581 dev->netdev->stats.tx_carrier_errors++;
582 }
583 /* Report link status changes to the network stack */
584 if ((d[INT_MSR] & MSR_LINK) == 0) {
585 if (netif_carrier_ok(dev->netdev)) {
586 netif_carrier_off(dev->netdev);
587 dbg("%s: LINK LOST\n", __func__);
588 }
589 } else {
590 if (!netif_carrier_ok(dev->netdev)) {
591 netif_carrier_on(dev->netdev);
592 dbg("%s: LINK CAME BACK\n", __func__);
593 }
594 }
595
596 resubmit:
597 res = usb_submit_urb (urb, GFP_ATOMIC);
598 if (res == -ENODEV)
599 netif_device_detach(dev->netdev);
600 else if (res)
601 err ("can't resubmit intr, %s-%s/input0, status %d",
602 dev->udev->bus->bus_name,
603 dev->udev->devpath, res);
604 }
605
606 static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message)
607 {
608 rtl8150_t *dev = usb_get_intfdata(intf);
609
610 netif_device_detach(dev->netdev);
611
612 if (netif_running(dev->netdev)) {
613 usb_kill_urb(dev->rx_urb);
614 usb_kill_urb(dev->intr_urb);
615 }
616 return 0;
617 }
618
619 static int rtl8150_resume(struct usb_interface *intf)
620 {
621 rtl8150_t *dev = usb_get_intfdata(intf);
622
623 netif_device_attach(dev->netdev);
624 if (netif_running(dev->netdev)) {
625 dev->rx_urb->status = 0;
626 dev->rx_urb->actual_length = 0;
627 read_bulk_callback(dev->rx_urb);
628
629 dev->intr_urb->status = 0;
630 dev->intr_urb->actual_length = 0;
631 intr_callback(dev->intr_urb);
632 }
633 return 0;
634 }
635
636 /*
637 **
638 ** network related part of the code
639 **
640 */
641
642 static void fill_skb_pool(rtl8150_t *dev)
643 {
644 struct sk_buff *skb;
645 int i;
646
647 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
648 if (dev->rx_skb_pool[i])
649 continue;
650 skb = dev_alloc_skb(RTL8150_MTU + 2);
651 if (!skb) {
652 return;
653 }
654 skb_reserve(skb, 2);
655 dev->rx_skb_pool[i] = skb;
656 }
657 }
658
659 static void free_skb_pool(rtl8150_t *dev)
660 {
661 int i;
662
663 for (i = 0; i < RX_SKB_POOL_SIZE; i++)
664 if (dev->rx_skb_pool[i])
665 dev_kfree_skb(dev->rx_skb_pool[i]);
666 }
667
668 static int enable_net_traffic(rtl8150_t * dev)
669 {
670 u8 cr, tcr, rcr, msr;
671
672 if (!rtl8150_reset(dev)) {
673 dev_warn(&dev->udev->dev, "device reset failed\n");
674 }
675 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */
676 rcr = 0x9e;
677 dev->rx_creg = cpu_to_le16(rcr);
678 tcr = 0xd8;
679 cr = 0x0c;
680 if (!(rcr & 0x80))
681 set_bit(RTL8150_HW_CRC, &dev->flags);
682 set_registers(dev, RCR, 1, &rcr);
683 set_registers(dev, TCR, 1, &tcr);
684 set_registers(dev, CR, 1, &cr);
685 get_registers(dev, MSR, 1, &msr);
686
687 return 0;
688 }
689
690 static void disable_net_traffic(rtl8150_t * dev)
691 {
692 u8 cr;
693
694 get_registers(dev, CR, 1, &cr);
695 cr &= 0xf3;
696 set_registers(dev, CR, 1, &cr);
697 }
698
699 static void rtl8150_tx_timeout(struct net_device *netdev)
700 {
701 rtl8150_t *dev = netdev_priv(netdev);
702 dev_warn(&netdev->dev, "Tx timeout.\n");
703 usb_unlink_urb(dev->tx_urb);
704 netdev->stats.tx_errors++;
705 }
706
707 static void rtl8150_set_multicast(struct net_device *netdev)
708 {
709 rtl8150_t *dev = netdev_priv(netdev);
710 netif_stop_queue(netdev);
711 if (netdev->flags & IFF_PROMISC) {
712 dev->rx_creg |= cpu_to_le16(0x0001);
713 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name);
714 } else if (!netdev_mc_empty(netdev) ||
715 (netdev->flags & IFF_ALLMULTI)) {
716 dev->rx_creg &= cpu_to_le16(0xfffe);
717 dev->rx_creg |= cpu_to_le16(0x0002);
718 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name);
719 } else {
720 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
721 dev->rx_creg &= cpu_to_le16(0x00fc);
722 }
723 async_set_registers(dev, RCR, 2);
724 netif_wake_queue(netdev);
725 }
726
727 static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb,
728 struct net_device *netdev)
729 {
730 rtl8150_t *dev = netdev_priv(netdev);
731 int count, res;
732
733 netif_stop_queue(netdev);
734 count = (skb->len < 60) ? 60 : skb->len;
735 count = (count & 0x3f) ? count : count + 1;
736 dev->tx_skb = skb;
737 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),
738 skb->data, count, write_bulk_callback, dev);
739 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
740 /* Can we get/handle EPIPE here? */
741 if (res == -ENODEV)
742 netif_device_detach(dev->netdev);
743 else {
744 dev_warn(&netdev->dev, "failed tx_urb %d\n", res);
745 netdev->stats.tx_errors++;
746 netif_start_queue(netdev);
747 }
748 } else {
749 netdev->stats.tx_packets++;
750 netdev->stats.tx_bytes += skb->len;
751 netdev->trans_start = jiffies;
752 }
753
754 return NETDEV_TX_OK;
755 }
756
757
758 static void set_carrier(struct net_device *netdev)
759 {
760 rtl8150_t *dev = netdev_priv(netdev);
761 short tmp;
762
763 get_registers(dev, CSCR, 2, &tmp);
764 if (tmp & CSCR_LINK_STATUS)
765 netif_carrier_on(netdev);
766 else
767 netif_carrier_off(netdev);
768 }
769
770 static int rtl8150_open(struct net_device *netdev)
771 {
772 rtl8150_t *dev = netdev_priv(netdev);
773 int res;
774
775 if (dev->rx_skb == NULL)
776 dev->rx_skb = pull_skb(dev);
777 if (!dev->rx_skb)
778 return -ENOMEM;
779
780 set_registers(dev, IDR, 6, netdev->dev_addr);
781
782 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
783 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
784 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) {
785 if (res == -ENODEV)
786 netif_device_detach(dev->netdev);
787 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res);
788 return res;
789 }
790 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),
791 dev->intr_buff, INTBUFSIZE, intr_callback,
792 dev, dev->intr_interval);
793 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) {
794 if (res == -ENODEV)
795 netif_device_detach(dev->netdev);
796 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res);
797 usb_kill_urb(dev->rx_urb);
798 return res;
799 }
800 enable_net_traffic(dev);
801 set_carrier(netdev);
802 netif_start_queue(netdev);
803
804 return res;
805 }
806
807 static int rtl8150_close(struct net_device *netdev)
808 {
809 rtl8150_t *dev = netdev_priv(netdev);
810 int res = 0;
811
812 netif_stop_queue(netdev);
813 if (!test_bit(RTL8150_UNPLUG, &dev->flags))
814 disable_net_traffic(dev);
815 unlink_all_urbs(dev);
816
817 return res;
818 }
819
820 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
821 {
822 rtl8150_t *dev = netdev_priv(netdev);
823
824 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
825 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
826 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info);
827 }
828
829 static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
830 {
831 rtl8150_t *dev = netdev_priv(netdev);
832 short lpa, bmcr;
833
834 ecmd->supported = (SUPPORTED_10baseT_Half |
835 SUPPORTED_10baseT_Full |
836 SUPPORTED_100baseT_Half |
837 SUPPORTED_100baseT_Full |
838 SUPPORTED_Autoneg |
839 SUPPORTED_TP | SUPPORTED_MII);
840 ecmd->port = PORT_TP;
841 ecmd->transceiver = XCVR_INTERNAL;
842 ecmd->phy_address = dev->phy;
843 get_registers(dev, BMCR, 2, &bmcr);
844 get_registers(dev, ANLP, 2, &lpa);
845 if (bmcr & BMCR_ANENABLE) {
846 u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ?
847 SPEED_100 : SPEED_10);
848 ethtool_cmd_speed_set(ecmd, speed);
849 ecmd->autoneg = AUTONEG_ENABLE;
850 if (speed == SPEED_100)
851 ecmd->duplex = (lpa & LPA_100FULL) ?
852 DUPLEX_FULL : DUPLEX_HALF;
853 else
854 ecmd->duplex = (lpa & LPA_10FULL) ?
855 DUPLEX_FULL : DUPLEX_HALF;
856 } else {
857 ecmd->autoneg = AUTONEG_DISABLE;
858 ethtool_cmd_speed_set(ecmd, ((bmcr & BMCR_SPEED100) ?
859 SPEED_100 : SPEED_10));
860 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
861 DUPLEX_FULL : DUPLEX_HALF;
862 }
863 return 0;
864 }
865
866 static const struct ethtool_ops ops = {
867 .get_drvinfo = rtl8150_get_drvinfo,
868 .get_settings = rtl8150_get_settings,
869 .get_link = ethtool_op_get_link
870 };
871
872 static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
873 {
874 rtl8150_t *dev = netdev_priv(netdev);
875 u16 *data = (u16 *) & rq->ifr_ifru;
876 int res = 0;
877
878 switch (cmd) {
879 case SIOCDEVPRIVATE:
880 data[0] = dev->phy;
881 case SIOCDEVPRIVATE + 1:
882 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);
883 break;
884 case SIOCDEVPRIVATE + 2:
885 if (!capable(CAP_NET_ADMIN))
886 return -EPERM;
887 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);
888 break;
889 default:
890 res = -EOPNOTSUPP;
891 }
892
893 return res;
894 }
895
896 static const struct net_device_ops rtl8150_netdev_ops = {
897 .ndo_open = rtl8150_open,
898 .ndo_stop = rtl8150_close,
899 .ndo_do_ioctl = rtl8150_ioctl,
900 .ndo_start_xmit = rtl8150_start_xmit,
901 .ndo_tx_timeout = rtl8150_tx_timeout,
902 .ndo_set_multicast_list = rtl8150_set_multicast,
903 .ndo_set_mac_address = rtl8150_set_mac_address,
904
905 .ndo_change_mtu = eth_change_mtu,
906 .ndo_validate_addr = eth_validate_addr,
907 };
908
909 static int rtl8150_probe(struct usb_interface *intf,
910 const struct usb_device_id *id)
911 {
912 struct usb_device *udev = interface_to_usbdev(intf);
913 rtl8150_t *dev;
914 struct net_device *netdev;
915
916 netdev = alloc_etherdev(sizeof(rtl8150_t));
917 if (!netdev) {
918 err("Out of memory");
919 return -ENOMEM;
920 }
921
922 dev = netdev_priv(netdev);
923
924 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
925 if (!dev->intr_buff) {
926 free_netdev(netdev);
927 return -ENOMEM;
928 }
929
930 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
931 spin_lock_init(&dev->rx_pool_lock);
932
933 dev->udev = udev;
934 dev->netdev = netdev;
935 netdev->netdev_ops = &rtl8150_netdev_ops;
936 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
937 SET_ETHTOOL_OPS(netdev, &ops);
938 dev->intr_interval = 100; /* 100ms */
939
940 if (!alloc_all_urbs(dev)) {
941 err("out of memory");
942 goto out;
943 }
944 if (!rtl8150_reset(dev)) {
945 err("couldn't reset the device");
946 goto out1;
947 }
948 fill_skb_pool(dev);
949 set_ethernet_addr(dev);
950
951 usb_set_intfdata(intf, dev);
952 SET_NETDEV_DEV(netdev, &intf->dev);
953 if (register_netdev(netdev) != 0) {
954 err("couldn't register the device");
955 goto out2;
956 }
957
958 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name);
959
960 return 0;
961
962 out2:
963 usb_set_intfdata(intf, NULL);
964 free_skb_pool(dev);
965 out1:
966 free_all_urbs(dev);
967 out:
968 kfree(dev->intr_buff);
969 free_netdev(netdev);
970 return -EIO;
971 }
972
973 static void rtl8150_disconnect(struct usb_interface *intf)
974 {
975 rtl8150_t *dev = usb_get_intfdata(intf);
976
977 usb_set_intfdata(intf, NULL);
978 if (dev) {
979 set_bit(RTL8150_UNPLUG, &dev->flags);
980 tasklet_kill(&dev->tl);
981 unregister_netdev(dev->netdev);
982 unlink_all_urbs(dev);
983 free_all_urbs(dev);
984 free_skb_pool(dev);
985 if (dev->rx_skb)
986 dev_kfree_skb(dev->rx_skb);
987 kfree(dev->intr_buff);
988 free_netdev(dev->netdev);
989 }
990 }
991
992 static int __init usb_rtl8150_init(void)
993 {
994 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
995 DRIVER_DESC "\n");
996 return usb_register(&rtl8150_driver);
997 }
998
999 static void __exit usb_rtl8150_exit(void)
1000 {
1001 usb_deregister(&rtl8150_driver);
1002 }
1003
1004 module_init(usb_rtl8150_init);
1005 module_exit(usb_rtl8150_exit);
1006
1007 MODULE_AUTHOR(DRIVER_AUTHOR);
1008 MODULE_DESCRIPTION(DRIVER_DESC);
1009 MODULE_LICENSE("GPL");
Linux with added FPC-III support