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usbnet: convert catc device to net_device_ops
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / usb / 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/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 */
5859271e 126#define VENDOR_ID_REALTEK 0x0bda
1da177e4 127#define VENDOR_ID_MELCO 0x0411
5859271e 128#define VENDOR_ID_MICRONET 0x3980
1da177e4 129#define VENDOR_ID_LONGSHINE 0x07b8
5859271e 130#define VENDOR_ID_OQO 0x1557
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)},
5859271e 147 {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)},
b6c2799d 148 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)},
1da177e4
LT		 149 {}
150};
151
152MODULE_DEVICE_TABLE(usb, rtl8150_table);
153
154struct rtl8150 {
155 unsigned long flags;
156 struct usb_device *udev;
157 struct tasklet_struct tl;
158 struct net_device_stats stats;
159 struct net_device *netdev;
160 struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb;
161 struct sk_buff *tx_skb, *rx_skb;
162 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE];
163 spinlock_t rx_pool_lock;
164 struct usb_ctrlrequest dr;
165 int intr_interval;
166 __le16 rx_creg;
167 u8 *intr_buff;
168 u8 phy;
169};
170
171typedef struct rtl8150 rtl8150_t;
172
1da177e4
LT		 173static void fill_skb_pool(rtl8150_t *);
174static void free_skb_pool(rtl8150_t *);
175static inline struct sk_buff *pull_skb(rtl8150_t *);
176static void rtl8150_disconnect(struct usb_interface *intf);
177static int rtl8150_probe(struct usb_interface *intf,
178 const struct usb_device_id *id);
23219c13
PC		 179static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message);
180static int rtl8150_resume(struct usb_interface *intf);
1da177e4
LT		 181
182static const char driver_name [] = "rtl8150";
183
184static struct usb_driver rtl8150_driver = {
1da177e4
LT		 185 .name = driver_name,
186 .probe = rtl8150_probe,
187 .disconnect = rtl8150_disconnect,
188 .id_table = rtl8150_table,
23219c13
PC		 189 .suspend = rtl8150_suspend,
190 .resume = rtl8150_resume
1da177e4
LT		 191};
192
193/*
194**
195** device related part of the code
196**
197*/
198static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
199{
200 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
201 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
202 indx, 0, data, size, 500);
203}
204
205static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
206{
207 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
208 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
209 indx, 0, data, size, 500);
210}
211
7d12e780 212static void ctrl_callback(struct urb *urb)
1da177e4
LT		 213{
214 rtl8150_t *dev;
c94cb314 215 int status = urb->status;
1da177e4 216
c94cb314 217 switch (status) {
1da177e4
LT		 218 case 0:
219 break;
220 case -EINPROGRESS:
221 break;
222 case -ENOENT:
223 break;
224 default:
c94cb314 225 dev_warn(&urb->dev->dev, "ctrl urb status %d\n", status);
1da177e4
LT		 226 }
227 dev = urb->context;
228 clear_bit(RX_REG_SET, &dev->flags);
229}
230
231static 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);
23219c13
PC		 247 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC))) {
248 if (ret == -ENODEV)
249 netif_device_detach(dev->netdev);
1da177e4 250 err("control request submission failed: %d", ret);
23219c13 251 } else
1da177e4
LT		 252 set_bit(RX_REG_SET, &dev->flags);
253
254 return ret;
255}
256
257static 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
281static 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;
886ae1fa
AV		 287 data[1] = reg & 0xff;
288 data[2] = (reg >> 8) & 0xff;
1da177e4
LT		 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
304static 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
312static 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 int i;
317
318 if (netif_running(netdev))
319 return -EBUSY;
320
321 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
322 dbg("%s: Setting MAC address to ", netdev->name);
323 for (i = 0; i < 5; i++)
324 dbg("%02X:", netdev->dev_addr[i]);
325 dbg("%02X\n", netdev->dev_addr[i]);
326 /* Set the IDR registers. */
327 set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr);
328#ifdef EEPROM_WRITE
329 {
330 u8 cr;
331 /* Get the CR contents. */
332 get_registers(dev, CR, 1, &cr);
333 /* Set the WEPROM bit (eeprom write enable). */
334 cr |= 0x20;
335 set_registers(dev, CR, 1, &cr);
336 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
337 so we need to split them up. */
338 for (i = 0; i * 2 < netdev->addr_len; i++) {
339 set_registers(dev, IDR_EEPROM + (i * 2), 2,
340 netdev->dev_addr + (i * 2));
341 }
342 /* Clear the WEPROM bit (preventing accidental eeprom writes). */
343 cr &= 0xdf;
344 set_registers(dev, CR, 1, &cr);
345 }
346#endif
347 return 0;
348}
349
350static int rtl8150_reset(rtl8150_t * dev)
351{
352 u8 data = 0x10;
353 int i = HZ;
354
355 set_registers(dev, CR, 1, &data);
356 do {
357 get_registers(dev, CR, 1, &data);
358 } while ((data & 0x10) && --i);
359
360 return (i > 0) ? 1 : 0;
361}
362
363static int alloc_all_urbs(rtl8150_t * dev)
364{
365 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
366 if (!dev->rx_urb)
367 return 0;
368 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
369 if (!dev->tx_urb) {
370 usb_free_urb(dev->rx_urb);
371 return 0;
372 }
373 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
374 if (!dev->intr_urb) {
375 usb_free_urb(dev->rx_urb);
376 usb_free_urb(dev->tx_urb);
377 return 0;
378 }
379 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
7fdba2f2 380 if (!dev->ctrl_urb) {
1da177e4
LT		 381 usb_free_urb(dev->rx_urb);
382 usb_free_urb(dev->tx_urb);
383 usb_free_urb(dev->intr_urb);
384 return 0;
385 }
386
387 return 1;
388}
389
390static void free_all_urbs(rtl8150_t * dev)
391{
392 usb_free_urb(dev->rx_urb);
393 usb_free_urb(dev->tx_urb);
394 usb_free_urb(dev->intr_urb);
395 usb_free_urb(dev->ctrl_urb);
396}
397
398static void unlink_all_urbs(rtl8150_t * dev)
399{
400 usb_kill_urb(dev->rx_urb);
401 usb_kill_urb(dev->tx_urb);
402 usb_kill_urb(dev->intr_urb);
403 usb_kill_urb(dev->ctrl_urb);
404}
405
406static inline struct sk_buff *pull_skb(rtl8150_t *dev)
407{
408 struct sk_buff *skb;
409 int i;
410
411 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
412 if (dev->rx_skb_pool[i]) {
413 skb = dev->rx_skb_pool[i];
414 dev->rx_skb_pool[i] = NULL;
415 return skb;
416 }
417 }
418 return NULL;
419}
420
7d12e780 421static void read_bulk_callback(struct urb *urb)
1da177e4
LT		 422{
423 rtl8150_t *dev;
424 unsigned pkt_len, res;
425 struct sk_buff *skb;
426 struct net_device *netdev;
427 u16 rx_stat;
c94cb314
ON		 428 int status = urb->status;
429 int result;
1da177e4
LT		 430
431 dev = urb->context;
432 if (!dev)
433 return;
434 if (test_bit(RTL8150_UNPLUG, &dev->flags))
435 return;
436 netdev = dev->netdev;
437 if (!netif_device_present(netdev))
438 return;
439
c94cb314 440 switch (status) {
1da177e4
LT		 441 case 0:
442 break;
443 case -ENOENT:
444 return; /* the urb is in unlink state */
38e2bfc9 445 case -ETIME:
4dc89948 446 dev_warn(&urb->dev->dev, "may be reset is needed?..\n");
1da177e4
LT		 447 goto goon;
448 default:
c94cb314 449 dev_warn(&urb->dev->dev, "Rx status %d\n", status);
1da177e4
LT		 450 goto goon;
451 }
452
453 if (!dev->rx_skb)
454 goto resched;
455 /* protect against short packets (tell me why we got some?!?) */
456 if (urb->actual_length < 4)
457 goto goon;
458
459 res = urb->actual_length;
460 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
461 pkt_len = res - 4;
462
463 skb_put(dev->rx_skb, pkt_len);
464 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
465 netif_rx(dev->rx_skb);
466 dev->stats.rx_packets++;
467 dev->stats.rx_bytes += pkt_len;
468
469 spin_lock(&dev->rx_pool_lock);
470 skb = pull_skb(dev);
471 spin_unlock(&dev->rx_pool_lock);
472 if (!skb)
473 goto resched;
474
475 dev->rx_skb = skb;
476goon:
477 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
478 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
c94cb314
ON		 479 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);
480 if (result == -ENODEV)
23219c13 481 netif_device_detach(dev->netdev);
c94cb314 482 else if (result) {
1da177e4
LT		 483 set_bit(RX_URB_FAIL, &dev->flags);
484 goto resched;
485 } else {
486 clear_bit(RX_URB_FAIL, &dev->flags);
487 }
488
489 return;
490resched:
491 tasklet_schedule(&dev->tl);
492}
493
494static void rx_fixup(unsigned long data)
495{
496 rtl8150_t *dev;
497 struct sk_buff *skb;
23219c13 498 int status;
1da177e4
LT		 499
500 dev = (rtl8150_t *)data;
501
502 spin_lock_irq(&dev->rx_pool_lock);
503 fill_skb_pool(dev);
504 spin_unlock_irq(&dev->rx_pool_lock);
505 if (test_bit(RX_URB_FAIL, &dev->flags))
506 if (dev->rx_skb)
507 goto try_again;
508 spin_lock_irq(&dev->rx_pool_lock);
509 skb = pull_skb(dev);
510 spin_unlock_irq(&dev->rx_pool_lock);
511 if (skb == NULL)
512 goto tlsched;
513 dev->rx_skb = skb;
514 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
515 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
516try_again:
23219c13
PC		 517 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);
518 if (status == -ENODEV) {
519 netif_device_detach(dev->netdev);
520 } else if (status) {
1da177e4
LT		 521 set_bit(RX_URB_FAIL, &dev->flags);
522 goto tlsched;
23219c13 523 } else {
1da177e4
LT		 524 clear_bit(RX_URB_FAIL, &dev->flags);
525 }
526
527 return;
528tlsched:
529 tasklet_schedule(&dev->tl);
530}
531
7d12e780 532static void write_bulk_callback(struct urb *urb)
1da177e4
LT		 533{
534 rtl8150_t *dev;
c94cb314 535 int status = urb->status;
1da177e4
LT		 536
537 dev = urb->context;
538 if (!dev)
539 return;
540 dev_kfree_skb_irq(dev->tx_skb);
541 if (!netif_device_present(dev->netdev))
542 return;
c94cb314 543 if (status)
880c9c66 544 dev_info(&urb->dev->dev, "%s: Tx status %d\n",
c94cb314 545 dev->netdev->name, status);
1da177e4
LT		 546 dev->netdev->trans_start = jiffies;
547 netif_wake_queue(dev->netdev);
548}
549
7d12e780 550static void intr_callback(struct urb *urb)
1da177e4
LT		 551{
552 rtl8150_t *dev;
553 __u8 *d;
c94cb314
ON		 554 int status = urb->status;
555 int res;
1da177e4
LT		 556
557 dev = urb->context;
558 if (!dev)
559 return;
c94cb314 560 switch (status) {
1da177e4
LT		 561 case 0: /* success */
562 break;
563 case -ECONNRESET: /* unlink */
564 case -ENOENT:
565 case -ESHUTDOWN:
566 return;
567 /* -EPIPE: should clear the halt */
568 default:
880c9c66 569 dev_info(&urb->dev->dev, "%s: intr status %d\n",
c94cb314 570 dev->netdev->name, status);
1da177e4
LT		 571 goto resubmit;
572 }
573
574 d = urb->transfer_buffer;
575 if (d[0] & TSR_ERRORS) {
576 dev->stats.tx_errors++;
577 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
578 dev->stats.tx_aborted_errors++;
579 if (d[INT_TSR] & TSR_LCOL)
580 dev->stats.tx_window_errors++;
581 if (d[INT_TSR] & TSR_LOSS_CRS)
582 dev->stats.tx_carrier_errors++;
583 }
584 /* Report link status changes to the network stack */
585 if ((d[INT_MSR] & MSR_LINK) == 0) {
586 if (netif_carrier_ok(dev->netdev)) {
587 netif_carrier_off(dev->netdev);
588 dbg("%s: LINK LOST\n", __func__);
589 }
590 } else {
591 if (!netif_carrier_ok(dev->netdev)) {
592 netif_carrier_on(dev->netdev);
593 dbg("%s: LINK CAME BACK\n", __func__);
594 }
595 }
596
597resubmit:
c94cb314
ON		 598 res = usb_submit_urb (urb, GFP_ATOMIC);
599 if (res == -ENODEV)
23219c13 600 netif_device_detach(dev->netdev);
c94cb314 601 else if (res)
1da177e4
LT		 602 err ("can't resubmit intr, %s-%s/input0, status %d",
603 dev->udev->bus->bus_name,
c94cb314 604 dev->udev->devpath, res);
1da177e4
LT		 605}
606
23219c13
PC		 607static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message)
608{
609 rtl8150_t *dev = usb_get_intfdata(intf);
610
611 netif_device_detach(dev->netdev);
612
613 if (netif_running(dev->netdev)) {
614 usb_kill_urb(dev->rx_urb);
615 usb_kill_urb(dev->intr_urb);
616 }
617 return 0;
618}
619
620static int rtl8150_resume(struct usb_interface *intf)
621{
622 rtl8150_t *dev = usb_get_intfdata(intf);
623
624 netif_device_attach(dev->netdev);
625 if (netif_running(dev->netdev)) {
626 dev->rx_urb->status = 0;
627 dev->rx_urb->actual_length = 0;
7d12e780 628 read_bulk_callback(dev->rx_urb);
23219c13
PC		 629
630 dev->intr_urb->status = 0;
631 dev->intr_urb->actual_length = 0;
7d12e780 632 intr_callback(dev->intr_urb);
23219c13
PC		 633 }
634 return 0;
635}
1da177e4
LT		 636
637/*
638**
639** network related part of the code
640**
641*/
642
643static void fill_skb_pool(rtl8150_t *dev)
644{
645 struct sk_buff *skb;
646 int i;
647
648 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
649 if (dev->rx_skb_pool[i])
650 continue;
651 skb = dev_alloc_skb(RTL8150_MTU + 2);
652 if (!skb) {
653 return;
654 }
1da177e4
LT		 655 skb_reserve(skb, 2);
656 dev->rx_skb_pool[i] = skb;
657 }
658}
659
660static void free_skb_pool(rtl8150_t *dev)
661{
662 int i;
663
664 for (i = 0; i < RX_SKB_POOL_SIZE; i++)
665 if (dev->rx_skb_pool[i])
666 dev_kfree_skb(dev->rx_skb_pool[i]);
667}
668
669static int enable_net_traffic(rtl8150_t * dev)
670{
671 u8 cr, tcr, rcr, msr;
672
673 if (!rtl8150_reset(dev)) {
4dc89948 674 dev_warn(&dev->udev->dev, "device reset failed\n");
1da177e4
LT		 675 }
676 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */
677 rcr = 0x9e;
678 dev->rx_creg = cpu_to_le16(rcr);
679 tcr = 0xd8;
680 cr = 0x0c;
681 if (!(rcr & 0x80))
682 set_bit(RTL8150_HW_CRC, &dev->flags);
683 set_registers(dev, RCR, 1, &rcr);
684 set_registers(dev, TCR, 1, &tcr);
685 set_registers(dev, CR, 1, &cr);
686 get_registers(dev, MSR, 1, &msr);
687
688 return 0;
689}
690
691static void disable_net_traffic(rtl8150_t * dev)
692{
693 u8 cr;
694
695 get_registers(dev, CR, 1, &cr);
696 cr &= 0xf3;
697 set_registers(dev, CR, 1, &cr);
698}
699
700static struct net_device_stats *rtl8150_netdev_stats(struct net_device *dev)
701{
702 return &((rtl8150_t *)netdev_priv(dev))->stats;
703}
704
705static void rtl8150_tx_timeout(struct net_device *netdev)
706{
707 rtl8150_t *dev = netdev_priv(netdev);
4dc89948 708 dev_warn(&netdev->dev, "Tx timeout.\n");
1da177e4
LT		 709 usb_unlink_urb(dev->tx_urb);
710 dev->stats.tx_errors++;
711}
712
713static void rtl8150_set_multicast(struct net_device *netdev)
714{
715 rtl8150_t *dev = netdev_priv(netdev);
716 netif_stop_queue(netdev);
717 if (netdev->flags & IFF_PROMISC) {
718 dev->rx_creg |= cpu_to_le16(0x0001);
880c9c66 719 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name);
ae0a97bf 720 } else if (netdev->mc_count ||
1da177e4
LT		 721 (netdev->flags & IFF_ALLMULTI)) {
722 dev->rx_creg &= cpu_to_le16(0xfffe);
723 dev->rx_creg |= cpu_to_le16(0x0002);
880c9c66 724 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name);
1da177e4
LT		 725 } else {
726 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
727 dev->rx_creg &= cpu_to_le16(0x00fc);
728 }
729 async_set_registers(dev, RCR, 2);
730 netif_wake_queue(netdev);
731}
732
733static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev)
734{
735 rtl8150_t *dev = netdev_priv(netdev);
736 int count, res;
737
738 netif_stop_queue(netdev);
739 count = (skb->len < 60) ? 60 : skb->len;
740 count = (count & 0x3f) ? count : count + 1;
741 dev->tx_skb = skb;
742 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),
743 skb->data, count, write_bulk_callback, dev);
744 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
23219c13
PC		 745 /* Can we get/handle EPIPE here? */
746 if (res == -ENODEV)
747 netif_device_detach(dev->netdev);
748 else {
4dc89948 749 dev_warn(&netdev->dev, "failed tx_urb %d\n", res);
23219c13
PC		 750 dev->stats.tx_errors++;
751 netif_start_queue(netdev);
752 }
1da177e4
LT		 753 } else {
754 dev->stats.tx_packets++;
755 dev->stats.tx_bytes += skb->len;
756 netdev->trans_start = jiffies;
757 }
758
759 return 0;
760}
761
762
763static void set_carrier(struct net_device *netdev)
764{
765 rtl8150_t *dev = netdev_priv(netdev);
766 short tmp;
767
768 get_registers(dev, CSCR, 2, &tmp);
769 if (tmp & CSCR_LINK_STATUS)
770 netif_carrier_on(netdev);
771 else
772 netif_carrier_off(netdev);
773}
774
775static int rtl8150_open(struct net_device *netdev)
776{
777 rtl8150_t *dev = netdev_priv(netdev);
778 int res;
779
780 if (dev->rx_skb == NULL)
781 dev->rx_skb = pull_skb(dev);
782 if (!dev->rx_skb)
783 return -ENOMEM;
784
785 set_registers(dev, IDR, 6, netdev->dev_addr);
786
787 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
788 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
23219c13
PC		 789 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) {
790 if (res == -ENODEV)
791 netif_device_detach(dev->netdev);
4dc89948 792 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res);
23219c13
PC		 793 return res;
794 }
1da177e4
LT		 795 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),
796 dev->intr_buff, INTBUFSIZE, intr_callback,
797 dev, dev->intr_interval);
23219c13
PC		 798 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) {
799 if (res == -ENODEV)
800 netif_device_detach(dev->netdev);
4dc89948 801 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res);
23219c13
PC		 802 usb_kill_urb(dev->rx_urb);
803 return res;
804 }
1da177e4
LT		 805 enable_net_traffic(dev);
806 set_carrier(netdev);
23219c13 807 netif_start_queue(netdev);
1da177e4
LT		 808
809 return res;
810}
811
812static int rtl8150_close(struct net_device *netdev)
813{
814 rtl8150_t *dev = netdev_priv(netdev);
815 int res = 0;
816
817 netif_stop_queue(netdev);
818 if (!test_bit(RTL8150_UNPLUG, &dev->flags))
819 disable_net_traffic(dev);
820 unlink_all_urbs(dev);
821
822 return res;
823}
824
825static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
826{
827 rtl8150_t *dev = netdev_priv(netdev);
828
829 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
830 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
831 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info);
832}
833
834static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
835{
836 rtl8150_t *dev = netdev_priv(netdev);
837 short lpa, bmcr;
838
839 ecmd->supported = (SUPPORTED_10baseT_Half |
840 SUPPORTED_10baseT_Full |
841 SUPPORTED_100baseT_Half |
842 SUPPORTED_100baseT_Full |
843 SUPPORTED_Autoneg |
844 SUPPORTED_TP | SUPPORTED_MII);
845 ecmd->port = PORT_TP;
846 ecmd->transceiver = XCVR_INTERNAL;
847 ecmd->phy_address = dev->phy;
848 get_registers(dev, BMCR, 2, &bmcr);
849 get_registers(dev, ANLP, 2, &lpa);
850 if (bmcr & BMCR_ANENABLE) {
851 ecmd->autoneg = AUTONEG_ENABLE;
852 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ?
853 SPEED_100 : SPEED_10;
854 if (ecmd->speed == SPEED_100)
855 ecmd->duplex = (lpa & LPA_100FULL) ?
856 DUPLEX_FULL : DUPLEX_HALF;
857 else
858 ecmd->duplex = (lpa & LPA_10FULL) ?
859 DUPLEX_FULL : DUPLEX_HALF;
860 } else {
861 ecmd->autoneg = AUTONEG_DISABLE;
862 ecmd->speed = (bmcr & BMCR_SPEED100) ?
863 SPEED_100 : SPEED_10;
864 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
865 DUPLEX_FULL : DUPLEX_HALF;
866 }
867 return 0;
868}
869
870static struct ethtool_ops ops = {
871 .get_drvinfo = rtl8150_get_drvinfo,
872 .get_settings = rtl8150_get_settings,
873 .get_link = ethtool_op_get_link
874};
875
876static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
877{
878 rtl8150_t *dev = netdev_priv(netdev);
879 u16 *data = (u16 *) & rq->ifr_ifru;
880 int res = 0;
881
882 switch (cmd) {
883 case SIOCDEVPRIVATE:
884 data[0] = dev->phy;
885 case SIOCDEVPRIVATE + 1:
886 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);
887 break;
888 case SIOCDEVPRIVATE + 2:
889 if (!capable(CAP_NET_ADMIN))
890 return -EPERM;
891 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);
892 break;
893 default:
894 res = -EOPNOTSUPP;
895 }
896
897 return res;
898}
899
900static int rtl8150_probe(struct usb_interface *intf,
901 const struct usb_device_id *id)
902{
903 struct usb_device *udev = interface_to_usbdev(intf);
904 rtl8150_t *dev;
905 struct net_device *netdev;
906
907 netdev = alloc_etherdev(sizeof(rtl8150_t));
908 if (!netdev) {
909 err("Out of memory");
910 return -ENOMEM;
911 }
912
913 dev = netdev_priv(netdev);
1da177e4
LT		 914
915 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
916 if (!dev->intr_buff) {
917 free_netdev(netdev);
918 return -ENOMEM;
919 }
920
921 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
922 spin_lock_init(&dev->rx_pool_lock);
923
924 dev->udev = udev;
925 dev->netdev = netdev;
1da177e4
LT		 926 netdev->open = rtl8150_open;
927 netdev->stop = rtl8150_close;
928 netdev->do_ioctl = rtl8150_ioctl;
929 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
930 netdev->tx_timeout = rtl8150_tx_timeout;
931 netdev->hard_start_xmit = rtl8150_start_xmit;
932 netdev->set_multicast_list = rtl8150_set_multicast;
933 netdev->set_mac_address = rtl8150_set_mac_address;
934 netdev->get_stats = rtl8150_netdev_stats;
1da177e4
LT		 935 SET_ETHTOOL_OPS(netdev, &ops);
936 dev->intr_interval = 100; /* 100ms */
937
938 if (!alloc_all_urbs(dev)) {
939 err("out of memory");
940 goto out;
941 }
942 if (!rtl8150_reset(dev)) {
943 err("couldn't reset the device");
944 goto out1;
945 }
946 fill_skb_pool(dev);
947 set_ethernet_addr(dev);
1da177e4
LT		 948
949 usb_set_intfdata(intf, dev);
950 SET_NETDEV_DEV(netdev, &intf->dev);
951 if (register_netdev(netdev) != 0) {
952 err("couldn't register the device");
953 goto out2;
954 }
09abfa80 955
880c9c66 956 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name);
09abfa80 957
1da177e4
LT		 958 return 0;
959
960out2:
961 usb_set_intfdata(intf, NULL);
962 free_skb_pool(dev);
963out1:
964 free_all_urbs(dev);
965out:
966 kfree(dev->intr_buff);
967 free_netdev(netdev);
968 return -EIO;
969}
970
971static void rtl8150_disconnect(struct usb_interface *intf)
972{
973 rtl8150_t *dev = usb_get_intfdata(intf);
974
975 usb_set_intfdata(intf, NULL);
976 if (dev) {
977 set_bit(RTL8150_UNPLUG, &dev->flags);
8da608ca 978 tasklet_disable(&dev->tl);
eff674a5 979 tasklet_kill(&dev->tl);
1da177e4
LT		 980 unregister_netdev(dev->netdev);
981 unlink_all_urbs(dev);
982 free_all_urbs(dev);
983 free_skb_pool(dev);
984 if (dev->rx_skb)
985 dev_kfree_skb(dev->rx_skb);
986 kfree(dev->intr_buff);
987 free_netdev(dev->netdev);
988 }
989}
990
991static int __init usb_rtl8150_init(void)
992{
880c9c66
GKH		 993 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
994 DRIVER_DESC "\n");
1da177e4
LT		 995 return usb_register(&rtl8150_driver);
996}
997
998static void __exit usb_rtl8150_exit(void)
999{
1000 usb_deregister(&rtl8150_driver);
1001}
1002
1003module_init(usb_rtl8150_init);
1004module_exit(usb_rtl8150_exit);
1005
1006MODULE_AUTHOR(DRIVER_AUTHOR);
1007MODULE_DESCRIPTION(DRIVER_DESC);
1008MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)