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Commit | Line | Data |
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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/signal.h> |
10 | #include <linux/slab.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/netdevice.h> | |
13 | #include <linux/etherdevice.h> | |
14 | #include <linux/mii.h> | |
15 | #include <linux/ethtool.h> | |
16 | #include <linux/usb.h> | |
7c0f6ba6 | 17 | #include <linux/uaccess.h> |
1da177e4 LT |
18 | |
19 | /* Version Information */ | |
20 | #define DRIVER_VERSION "v0.6.2 (2004/08/27)" | |
21 | #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" | |
22 | #define DRIVER_DESC "rtl8150 based usb-ethernet driver" | |
23 | ||
24 | #define IDR 0x0120 | |
25 | #define MAR 0x0126 | |
26 | #define CR 0x012e | |
27 | #define TCR 0x012f | |
28 | #define RCR 0x0130 | |
29 | #define TSR 0x0132 | |
30 | #define RSR 0x0133 | |
31 | #define CON0 0x0135 | |
32 | #define CON1 0x0136 | |
33 | #define MSR 0x0137 | |
34 | #define PHYADD 0x0138 | |
35 | #define PHYDAT 0x0139 | |
36 | #define PHYCNT 0x013b | |
37 | #define GPPC 0x013d | |
38 | #define BMCR 0x0140 | |
39 | #define BMSR 0x0142 | |
40 | #define ANAR 0x0144 | |
41 | #define ANLP 0x0146 | |
42 | #define AER 0x0148 | |
43 | #define CSCR 0x014C /* This one has the link status */ | |
44 | #define CSCR_LINK_STATUS (1 << 3) | |
45 | ||
46 | #define IDR_EEPROM 0x1202 | |
47 | ||
48 | #define PHY_READ 0 | |
49 | #define PHY_WRITE 0x20 | |
50 | #define PHY_GO 0x40 | |
51 | ||
52 | #define MII_TIMEOUT 10 | |
53 | #define INTBUFSIZE 8 | |
54 | ||
55 | #define RTL8150_REQT_READ 0xc0 | |
56 | #define RTL8150_REQT_WRITE 0x40 | |
57 | #define RTL8150_REQ_GET_REGS 0x05 | |
58 | #define RTL8150_REQ_SET_REGS 0x05 | |
59 | ||
60 | ||
1da177e4 LT |
61 | /* Transmit status register errors */ |
62 | #define TSR_ECOL (1<<5) | |
63 | #define TSR_LCOL (1<<4) | |
64 | #define TSR_LOSS_CRS (1<<3) | |
65 | #define TSR_JBR (1<<2) | |
66 | #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) | |
67 | /* Receive status register errors */ | |
68 | #define RSR_CRC (1<<2) | |
69 | #define RSR_FAE (1<<1) | |
70 | #define RSR_ERRORS (RSR_CRC | RSR_FAE) | |
71 | ||
72 | /* Media status register definitions */ | |
73 | #define MSR_DUPLEX (1<<4) | |
74 | #define MSR_SPEED (1<<3) | |
75 | #define MSR_LINK (1<<2) | |
76 | ||
77 | /* Interrupt pipe data */ | |
78 | #define INT_TSR 0x00 | |
79 | #define INT_RSR 0x01 | |
80 | #define INT_MSR 0x02 | |
81 | #define INT_WAKSR 0x03 | |
82 | #define INT_TXOK_CNT 0x04 | |
83 | #define INT_RXLOST_CNT 0x05 | |
84 | #define INT_CRERR_CNT 0x06 | |
85 | #define INT_COL_CNT 0x07 | |
86 | ||
87 | ||
88 | #define RTL8150_MTU 1540 | |
89 | #define RTL8150_TX_TIMEOUT (HZ) | |
90 | #define RX_SKB_POOL_SIZE 4 | |
91 | ||
92 | /* rtl8150 flags */ | |
93 | #define RTL8150_HW_CRC 0 | |
94 | #define RX_REG_SET 1 | |
95 | #define RTL8150_UNPLUG 2 | |
96 | #define RX_URB_FAIL 3 | |
97 | ||
98 | /* Define these values to match your device */ | |
5859271e | 99 | #define VENDOR_ID_REALTEK 0x0bda |
1da177e4 | 100 | #define VENDOR_ID_MELCO 0x0411 |
5859271e | 101 | #define VENDOR_ID_MICRONET 0x3980 |
1da177e4 | 102 | #define VENDOR_ID_LONGSHINE 0x07b8 |
5859271e | 103 | #define VENDOR_ID_OQO 0x1557 |
b6c2799d | 104 | #define VENDOR_ID_ZYXEL 0x0586 |
1da177e4 LT |
105 | |
106 | #define PRODUCT_ID_RTL8150 0x8150 | |
107 | #define PRODUCT_ID_LUAKTX 0x0012 | |
108 | #define PRODUCT_ID_LCS8138TX 0x401a | |
109 | #define PRODUCT_ID_SP128AR 0x0003 | |
b6c2799d | 110 | #define PRODUCT_ID_PRESTIGE 0x401a |
1da177e4 LT |
111 | |
112 | #undef EEPROM_WRITE | |
113 | ||
114 | /* table of devices that work with this driver */ | |
e1cb90f2 | 115 | static const struct usb_device_id rtl8150_table[] = { |
1da177e4 LT |
116 | {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, |
117 | {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, | |
118 | {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, | |
119 | {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, | |
5859271e | 120 | {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, |
b6c2799d | 121 | {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, |
1da177e4 LT |
122 | {} |
123 | }; | |
124 | ||
125 | MODULE_DEVICE_TABLE(usb, rtl8150_table); | |
126 | ||
127 | struct rtl8150 { | |
128 | unsigned long flags; | |
129 | struct usb_device *udev; | |
130 | struct tasklet_struct tl; | |
1da177e4 | 131 | struct net_device *netdev; |
4d12997a | 132 | struct urb *rx_urb, *tx_urb, *intr_urb; |
1da177e4 LT |
133 | struct sk_buff *tx_skb, *rx_skb; |
134 | struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; | |
135 | spinlock_t rx_pool_lock; | |
136 | struct usb_ctrlrequest dr; | |
137 | int intr_interval; | |
1da177e4 LT |
138 | u8 *intr_buff; |
139 | u8 phy; | |
140 | }; | |
141 | ||
142 | typedef struct rtl8150 rtl8150_t; | |
143 | ||
4d12997a PM |
144 | struct async_req { |
145 | struct usb_ctrlrequest dr; | |
146 | u16 rx_creg; | |
147 | }; | |
148 | ||
1da177e4 LT |
149 | static const char driver_name [] = "rtl8150"; |
150 | ||
1da177e4 LT |
151 | /* |
152 | ** | |
153 | ** device related part of the code | |
154 | ** | |
155 | */ | |
156 | static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) | |
157 | { | |
7926aff5 BH |
158 | void *buf; |
159 | int ret; | |
160 | ||
161 | buf = kmalloc(size, GFP_NOIO); | |
162 | if (!buf) | |
163 | return -ENOMEM; | |
164 | ||
165 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
166 | RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, | |
167 | indx, 0, buf, size, 500); | |
168 | if (ret > 0 && ret <= size) | |
169 | memcpy(data, buf, ret); | |
170 | kfree(buf); | |
171 | return ret; | |
1da177e4 LT |
172 | } |
173 | ||
7926aff5 | 174 | static int set_registers(rtl8150_t * dev, u16 indx, u16 size, const void *data) |
1da177e4 | 175 | { |
7926aff5 BH |
176 | void *buf; |
177 | int ret; | |
178 | ||
179 | buf = kmemdup(data, size, GFP_NOIO); | |
180 | if (!buf) | |
181 | return -ENOMEM; | |
182 | ||
183 | ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
184 | RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, | |
185 | indx, 0, buf, size, 500); | |
186 | kfree(buf); | |
187 | return ret; | |
1da177e4 LT |
188 | } |
189 | ||
4d12997a | 190 | static void async_set_reg_cb(struct urb *urb) |
1da177e4 | 191 | { |
4d12997a | 192 | struct async_req *req = (struct async_req *)urb->context; |
c94cb314 | 193 | int status = urb->status; |
1da177e4 | 194 | |
4d12997a PM |
195 | if (status < 0) |
196 | dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); | |
197 | kfree(req); | |
198 | usb_free_urb(urb); | |
1da177e4 LT |
199 | } |
200 | ||
4d12997a | 201 | static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) |
1da177e4 | 202 | { |
4d12997a PM |
203 | int res = -ENOMEM; |
204 | struct urb *async_urb; | |
205 | struct async_req *req; | |
206 | ||
207 | req = kmalloc(sizeof(struct async_req), GFP_ATOMIC); | |
208 | if (req == NULL) | |
209 | return res; | |
210 | async_urb = usb_alloc_urb(0, GFP_ATOMIC); | |
211 | if (async_urb == NULL) { | |
212 | kfree(req); | |
213 | return res; | |
214 | } | |
215 | req->rx_creg = cpu_to_le16(reg); | |
216 | req->dr.bRequestType = RTL8150_REQT_WRITE; | |
217 | req->dr.bRequest = RTL8150_REQ_SET_REGS; | |
218 | req->dr.wIndex = 0; | |
219 | req->dr.wValue = cpu_to_le16(indx); | |
220 | req->dr.wLength = cpu_to_le16(size); | |
221 | usb_fill_control_urb(async_urb, dev->udev, | |
222 | usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, | |
223 | &req->rx_creg, size, async_set_reg_cb, req); | |
224 | res = usb_submit_urb(async_urb, GFP_ATOMIC); | |
225 | if (res) { | |
226 | if (res == -ENODEV) | |
23219c13 | 227 | netif_device_detach(dev->netdev); |
4d12997a PM |
228 | dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); |
229 | } | |
230 | return res; | |
1da177e4 LT |
231 | } |
232 | ||
233 | static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) | |
234 | { | |
235 | int i; | |
236 | u8 data[3], tmp; | |
237 | ||
238 | data[0] = phy; | |
239 | data[1] = data[2] = 0; | |
240 | tmp = indx | PHY_READ | PHY_GO; | |
241 | i = 0; | |
242 | ||
243 | set_registers(dev, PHYADD, sizeof(data), data); | |
244 | set_registers(dev, PHYCNT, 1, &tmp); | |
245 | do { | |
246 | get_registers(dev, PHYCNT, 1, data); | |
247 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | |
248 | ||
c064efca | 249 | if (i <= MII_TIMEOUT) { |
1da177e4 LT |
250 | get_registers(dev, PHYDAT, 2, data); |
251 | *reg = data[0] | (data[1] << 8); | |
252 | return 0; | |
253 | } else | |
254 | return 1; | |
255 | } | |
256 | ||
257 | static int write_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; | |
886ae1fa AV |
263 | data[1] = reg & 0xff; |
264 | data[2] = (reg >> 8) & 0xff; | |
1da177e4 LT |
265 | tmp = indx | PHY_WRITE | PHY_GO; |
266 | i = 0; | |
267 | ||
268 | set_registers(dev, PHYADD, sizeof(data), data); | |
269 | set_registers(dev, PHYCNT, 1, &tmp); | |
270 | do { | |
271 | get_registers(dev, PHYCNT, 1, data); | |
272 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | |
273 | ||
c064efca | 274 | if (i <= MII_TIMEOUT) |
1da177e4 LT |
275 | return 0; |
276 | else | |
277 | return 1; | |
278 | } | |
279 | ||
280 | static inline void set_ethernet_addr(rtl8150_t * dev) | |
281 | { | |
282 | u8 node_id[6]; | |
283 | ||
284 | get_registers(dev, IDR, sizeof(node_id), node_id); | |
285 | memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id)); | |
286 | } | |
287 | ||
288 | static int rtl8150_set_mac_address(struct net_device *netdev, void *p) | |
289 | { | |
290 | struct sockaddr *addr = p; | |
291 | rtl8150_t *dev = netdev_priv(netdev); | |
1da177e4 LT |
292 | |
293 | if (netif_running(netdev)) | |
294 | return -EBUSY; | |
295 | ||
296 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
49ae25b0 | 297 | netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr); |
1da177e4 | 298 | /* Set the IDR registers. */ |
6057912d | 299 | set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); |
1da177e4 LT |
300 | #ifdef EEPROM_WRITE |
301 | { | |
d649a284 | 302 | int i; |
1da177e4 LT |
303 | u8 cr; |
304 | /* Get the CR contents. */ | |
305 | get_registers(dev, CR, 1, &cr); | |
306 | /* Set the WEPROM bit (eeprom write enable). */ | |
307 | cr |= 0x20; | |
308 | set_registers(dev, CR, 1, &cr); | |
309 | /* Write the MAC address into eeprom. Eeprom writes must be word-sized, | |
310 | so we need to split them up. */ | |
311 | for (i = 0; i * 2 < netdev->addr_len; i++) { | |
141b9e66 | 312 | set_registers(dev, IDR_EEPROM + (i * 2), 2, |
1da177e4 LT |
313 | netdev->dev_addr + (i * 2)); |
314 | } | |
315 | /* Clear the WEPROM bit (preventing accidental eeprom writes). */ | |
316 | cr &= 0xdf; | |
317 | set_registers(dev, CR, 1, &cr); | |
318 | } | |
319 | #endif | |
320 | return 0; | |
321 | } | |
322 | ||
323 | static int rtl8150_reset(rtl8150_t * dev) | |
324 | { | |
325 | u8 data = 0x10; | |
326 | int i = HZ; | |
327 | ||
328 | set_registers(dev, CR, 1, &data); | |
329 | do { | |
330 | get_registers(dev, CR, 1, &data); | |
331 | } while ((data & 0x10) && --i); | |
332 | ||
333 | return (i > 0) ? 1 : 0; | |
334 | } | |
335 | ||
336 | static int alloc_all_urbs(rtl8150_t * dev) | |
337 | { | |
338 | dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
339 | if (!dev->rx_urb) | |
340 | return 0; | |
341 | dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
342 | if (!dev->tx_urb) { | |
343 | usb_free_urb(dev->rx_urb); | |
344 | return 0; | |
345 | } | |
346 | dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
347 | if (!dev->intr_urb) { | |
348 | usb_free_urb(dev->rx_urb); | |
349 | usb_free_urb(dev->tx_urb); | |
350 | return 0; | |
351 | } | |
1da177e4 LT |
352 | |
353 | return 1; | |
354 | } | |
355 | ||
356 | static void free_all_urbs(rtl8150_t * dev) | |
357 | { | |
358 | usb_free_urb(dev->rx_urb); | |
359 | usb_free_urb(dev->tx_urb); | |
360 | usb_free_urb(dev->intr_urb); | |
1da177e4 LT |
361 | } |
362 | ||
363 | static void unlink_all_urbs(rtl8150_t * dev) | |
364 | { | |
365 | usb_kill_urb(dev->rx_urb); | |
366 | usb_kill_urb(dev->tx_urb); | |
367 | usb_kill_urb(dev->intr_urb); | |
1da177e4 LT |
368 | } |
369 | ||
370 | static inline struct sk_buff *pull_skb(rtl8150_t *dev) | |
371 | { | |
372 | struct sk_buff *skb; | |
373 | int i; | |
374 | ||
375 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | |
376 | if (dev->rx_skb_pool[i]) { | |
377 | skb = dev->rx_skb_pool[i]; | |
378 | dev->rx_skb_pool[i] = NULL; | |
379 | return skb; | |
380 | } | |
381 | } | |
382 | return NULL; | |
383 | } | |
384 | ||
7d12e780 | 385 | static void read_bulk_callback(struct urb *urb) |
1da177e4 LT |
386 | { |
387 | rtl8150_t *dev; | |
388 | unsigned pkt_len, res; | |
389 | struct sk_buff *skb; | |
390 | struct net_device *netdev; | |
391 | u16 rx_stat; | |
c94cb314 ON |
392 | int status = urb->status; |
393 | int result; | |
1da177e4 LT |
394 | |
395 | dev = urb->context; | |
396 | if (!dev) | |
397 | return; | |
398 | if (test_bit(RTL8150_UNPLUG, &dev->flags)) | |
399 | return; | |
400 | netdev = dev->netdev; | |
401 | if (!netif_device_present(netdev)) | |
402 | return; | |
403 | ||
c94cb314 | 404 | switch (status) { |
1da177e4 LT |
405 | case 0: |
406 | break; | |
407 | case -ENOENT: | |
408 | return; /* the urb is in unlink state */ | |
38e2bfc9 | 409 | case -ETIME: |
342a437e AGR |
410 | if (printk_ratelimit()) |
411 | dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); | |
1da177e4 LT |
412 | goto goon; |
413 | default: | |
342a437e AGR |
414 | if (printk_ratelimit()) |
415 | dev_warn(&urb->dev->dev, "Rx status %d\n", status); | |
1da177e4 LT |
416 | goto goon; |
417 | } | |
418 | ||
419 | if (!dev->rx_skb) | |
420 | goto resched; | |
421 | /* protect against short packets (tell me why we got some?!?) */ | |
422 | if (urb->actual_length < 4) | |
423 | goto goon; | |
424 | ||
425 | res = urb->actual_length; | |
426 | rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); | |
427 | pkt_len = res - 4; | |
428 | ||
429 | skb_put(dev->rx_skb, pkt_len); | |
430 | dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); | |
431 | netif_rx(dev->rx_skb); | |
b7e41e23 SH |
432 | netdev->stats.rx_packets++; |
433 | netdev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
434 | |
435 | spin_lock(&dev->rx_pool_lock); | |
436 | skb = pull_skb(dev); | |
437 | spin_unlock(&dev->rx_pool_lock); | |
438 | if (!skb) | |
439 | goto resched; | |
440 | ||
441 | dev->rx_skb = skb; | |
442 | goon: | |
443 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | |
444 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
c94cb314 ON |
445 | result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); |
446 | if (result == -ENODEV) | |
23219c13 | 447 | netif_device_detach(dev->netdev); |
c94cb314 | 448 | else if (result) { |
1da177e4 LT |
449 | set_bit(RX_URB_FAIL, &dev->flags); |
450 | goto resched; | |
451 | } else { | |
452 | clear_bit(RX_URB_FAIL, &dev->flags); | |
453 | } | |
454 | ||
455 | return; | |
456 | resched: | |
457 | tasklet_schedule(&dev->tl); | |
458 | } | |
459 | ||
7d12e780 | 460 | static void write_bulk_callback(struct urb *urb) |
1da177e4 LT |
461 | { |
462 | rtl8150_t *dev; | |
c94cb314 | 463 | int status = urb->status; |
1da177e4 LT |
464 | |
465 | dev = urb->context; | |
466 | if (!dev) | |
467 | return; | |
468 | dev_kfree_skb_irq(dev->tx_skb); | |
469 | if (!netif_device_present(dev->netdev)) | |
470 | return; | |
c94cb314 | 471 | if (status) |
880c9c66 | 472 | dev_info(&urb->dev->dev, "%s: Tx status %d\n", |
c94cb314 | 473 | dev->netdev->name, status); |
860e9538 | 474 | netif_trans_update(dev->netdev); |
1da177e4 LT |
475 | netif_wake_queue(dev->netdev); |
476 | } | |
477 | ||
7d12e780 | 478 | static void intr_callback(struct urb *urb) |
1da177e4 LT |
479 | { |
480 | rtl8150_t *dev; | |
481 | __u8 *d; | |
c94cb314 ON |
482 | int status = urb->status; |
483 | int res; | |
1da177e4 LT |
484 | |
485 | dev = urb->context; | |
486 | if (!dev) | |
487 | return; | |
c94cb314 | 488 | switch (status) { |
1da177e4 LT |
489 | case 0: /* success */ |
490 | break; | |
491 | case -ECONNRESET: /* unlink */ | |
492 | case -ENOENT: | |
493 | case -ESHUTDOWN: | |
494 | return; | |
495 | /* -EPIPE: should clear the halt */ | |
496 | default: | |
880c9c66 | 497 | dev_info(&urb->dev->dev, "%s: intr status %d\n", |
c94cb314 | 498 | dev->netdev->name, status); |
1da177e4 LT |
499 | goto resubmit; |
500 | } | |
501 | ||
502 | d = urb->transfer_buffer; | |
503 | if (d[0] & TSR_ERRORS) { | |
b7e41e23 | 504 | dev->netdev->stats.tx_errors++; |
1da177e4 | 505 | if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) |
b7e41e23 | 506 | dev->netdev->stats.tx_aborted_errors++; |
1da177e4 | 507 | if (d[INT_TSR] & TSR_LCOL) |
b7e41e23 | 508 | dev->netdev->stats.tx_window_errors++; |
1da177e4 | 509 | if (d[INT_TSR] & TSR_LOSS_CRS) |
b7e41e23 | 510 | dev->netdev->stats.tx_carrier_errors++; |
1da177e4 LT |
511 | } |
512 | /* Report link status changes to the network stack */ | |
513 | if ((d[INT_MSR] & MSR_LINK) == 0) { | |
514 | if (netif_carrier_ok(dev->netdev)) { | |
515 | netif_carrier_off(dev->netdev); | |
49ae25b0 | 516 | netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); |
1da177e4 LT |
517 | } |
518 | } else { | |
519 | if (!netif_carrier_ok(dev->netdev)) { | |
520 | netif_carrier_on(dev->netdev); | |
49ae25b0 | 521 | netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); |
1da177e4 LT |
522 | } |
523 | } | |
524 | ||
525 | resubmit: | |
c94cb314 ON |
526 | res = usb_submit_urb (urb, GFP_ATOMIC); |
527 | if (res == -ENODEV) | |
23219c13 | 528 | netif_device_detach(dev->netdev); |
c94cb314 | 529 | else if (res) |
21f52432 GKH |
530 | dev_err(&dev->udev->dev, |
531 | "can't resubmit intr, %s-%s/input0, status %d\n", | |
532 | dev->udev->bus->bus_name, dev->udev->devpath, res); | |
1da177e4 LT |
533 | } |
534 | ||
23219c13 PC |
535 | static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) |
536 | { | |
537 | rtl8150_t *dev = usb_get_intfdata(intf); | |
538 | ||
539 | netif_device_detach(dev->netdev); | |
540 | ||
541 | if (netif_running(dev->netdev)) { | |
542 | usb_kill_urb(dev->rx_urb); | |
543 | usb_kill_urb(dev->intr_urb); | |
544 | } | |
545 | return 0; | |
546 | } | |
547 | ||
548 | static int rtl8150_resume(struct usb_interface *intf) | |
549 | { | |
550 | rtl8150_t *dev = usb_get_intfdata(intf); | |
551 | ||
552 | netif_device_attach(dev->netdev); | |
553 | if (netif_running(dev->netdev)) { | |
554 | dev->rx_urb->status = 0; | |
555 | dev->rx_urb->actual_length = 0; | |
7d12e780 | 556 | read_bulk_callback(dev->rx_urb); |
23219c13 PC |
557 | |
558 | dev->intr_urb->status = 0; | |
559 | dev->intr_urb->actual_length = 0; | |
7d12e780 | 560 | intr_callback(dev->intr_urb); |
23219c13 PC |
561 | } |
562 | return 0; | |
563 | } | |
1da177e4 LT |
564 | |
565 | /* | |
566 | ** | |
567 | ** network related part of the code | |
568 | ** | |
569 | */ | |
570 | ||
571 | static void fill_skb_pool(rtl8150_t *dev) | |
572 | { | |
573 | struct sk_buff *skb; | |
574 | int i; | |
575 | ||
576 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | |
577 | if (dev->rx_skb_pool[i]) | |
578 | continue; | |
579 | skb = dev_alloc_skb(RTL8150_MTU + 2); | |
580 | if (!skb) { | |
581 | return; | |
582 | } | |
1da177e4 LT |
583 | skb_reserve(skb, 2); |
584 | dev->rx_skb_pool[i] = skb; | |
585 | } | |
586 | } | |
587 | ||
588 | static void free_skb_pool(rtl8150_t *dev) | |
589 | { | |
590 | int i; | |
591 | ||
592 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) | |
593 | if (dev->rx_skb_pool[i]) | |
594 | dev_kfree_skb(dev->rx_skb_pool[i]); | |
595 | } | |
596 | ||
141b9e66 | 597 | static void rx_fixup(unsigned long data) |
598 | { | |
599 | struct rtl8150 *dev = (struct rtl8150 *)data; | |
600 | struct sk_buff *skb; | |
601 | int status; | |
602 | ||
603 | spin_lock_irq(&dev->rx_pool_lock); | |
604 | fill_skb_pool(dev); | |
605 | spin_unlock_irq(&dev->rx_pool_lock); | |
606 | if (test_bit(RX_URB_FAIL, &dev->flags)) | |
607 | if (dev->rx_skb) | |
608 | goto try_again; | |
609 | spin_lock_irq(&dev->rx_pool_lock); | |
610 | skb = pull_skb(dev); | |
611 | spin_unlock_irq(&dev->rx_pool_lock); | |
612 | if (skb == NULL) | |
613 | goto tlsched; | |
614 | dev->rx_skb = skb; | |
615 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | |
616 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
617 | try_again: | |
618 | status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); | |
619 | if (status == -ENODEV) { | |
620 | netif_device_detach(dev->netdev); | |
621 | } else if (status) { | |
622 | set_bit(RX_URB_FAIL, &dev->flags); | |
623 | goto tlsched; | |
624 | } else { | |
625 | clear_bit(RX_URB_FAIL, &dev->flags); | |
626 | } | |
627 | ||
628 | return; | |
629 | tlsched: | |
630 | tasklet_schedule(&dev->tl); | |
631 | } | |
632 | ||
1da177e4 LT |
633 | static int enable_net_traffic(rtl8150_t * dev) |
634 | { | |
635 | u8 cr, tcr, rcr, msr; | |
636 | ||
637 | if (!rtl8150_reset(dev)) { | |
4dc89948 | 638 | dev_warn(&dev->udev->dev, "device reset failed\n"); |
1da177e4 LT |
639 | } |
640 | /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ | |
641 | rcr = 0x9e; | |
1da177e4 LT |
642 | tcr = 0xd8; |
643 | cr = 0x0c; | |
644 | if (!(rcr & 0x80)) | |
645 | set_bit(RTL8150_HW_CRC, &dev->flags); | |
646 | set_registers(dev, RCR, 1, &rcr); | |
647 | set_registers(dev, TCR, 1, &tcr); | |
648 | set_registers(dev, CR, 1, &cr); | |
649 | get_registers(dev, MSR, 1, &msr); | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
654 | static void disable_net_traffic(rtl8150_t * dev) | |
655 | { | |
656 | u8 cr; | |
657 | ||
658 | get_registers(dev, CR, 1, &cr); | |
659 | cr &= 0xf3; | |
660 | set_registers(dev, CR, 1, &cr); | |
661 | } | |
662 | ||
1da177e4 LT |
663 | static void rtl8150_tx_timeout(struct net_device *netdev) |
664 | { | |
665 | rtl8150_t *dev = netdev_priv(netdev); | |
4dc89948 | 666 | dev_warn(&netdev->dev, "Tx timeout.\n"); |
1da177e4 | 667 | usb_unlink_urb(dev->tx_urb); |
b7e41e23 | 668 | netdev->stats.tx_errors++; |
1da177e4 LT |
669 | } |
670 | ||
671 | static void rtl8150_set_multicast(struct net_device *netdev) | |
672 | { | |
673 | rtl8150_t *dev = netdev_priv(netdev); | |
4d12997a PM |
674 | u16 rx_creg = 0x9e; |
675 | ||
1da177e4 LT |
676 | netif_stop_queue(netdev); |
677 | if (netdev->flags & IFF_PROMISC) { | |
4d12997a | 678 | rx_creg |= 0x0001; |
880c9c66 | 679 | dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); |
4cd24eaf | 680 | } else if (!netdev_mc_empty(netdev) || |
1da177e4 | 681 | (netdev->flags & IFF_ALLMULTI)) { |
4d12997a PM |
682 | rx_creg &= 0xfffe; |
683 | rx_creg |= 0x0002; | |
880c9c66 | 684 | dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name); |
1da177e4 LT |
685 | } else { |
686 | /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ | |
4d12997a | 687 | rx_creg &= 0x00fc; |
1da177e4 | 688 | } |
4d12997a | 689 | async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); |
1da177e4 LT |
690 | netif_wake_queue(netdev); |
691 | } | |
692 | ||
25a79c41 SH |
693 | static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, |
694 | struct net_device *netdev) | |
1da177e4 LT |
695 | { |
696 | rtl8150_t *dev = netdev_priv(netdev); | |
697 | int count, res; | |
698 | ||
699 | netif_stop_queue(netdev); | |
700 | count = (skb->len < 60) ? 60 : skb->len; | |
701 | count = (count & 0x3f) ? count : count + 1; | |
702 | dev->tx_skb = skb; | |
703 | usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), | |
704 | skb->data, count, write_bulk_callback, dev); | |
705 | if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { | |
23219c13 PC |
706 | /* Can we get/handle EPIPE here? */ |
707 | if (res == -ENODEV) | |
708 | netif_device_detach(dev->netdev); | |
709 | else { | |
4dc89948 | 710 | dev_warn(&netdev->dev, "failed tx_urb %d\n", res); |
b7e41e23 | 711 | netdev->stats.tx_errors++; |
23219c13 PC |
712 | netif_start_queue(netdev); |
713 | } | |
1da177e4 | 714 | } else { |
b7e41e23 SH |
715 | netdev->stats.tx_packets++; |
716 | netdev->stats.tx_bytes += skb->len; | |
860e9538 | 717 | netif_trans_update(netdev); |
1da177e4 LT |
718 | } |
719 | ||
6ed10654 | 720 | return NETDEV_TX_OK; |
1da177e4 LT |
721 | } |
722 | ||
723 | ||
724 | static void set_carrier(struct net_device *netdev) | |
725 | { | |
726 | rtl8150_t *dev = netdev_priv(netdev); | |
727 | short tmp; | |
728 | ||
729 | get_registers(dev, CSCR, 2, &tmp); | |
730 | if (tmp & CSCR_LINK_STATUS) | |
731 | netif_carrier_on(netdev); | |
732 | else | |
733 | netif_carrier_off(netdev); | |
734 | } | |
735 | ||
736 | static int rtl8150_open(struct net_device *netdev) | |
737 | { | |
738 | rtl8150_t *dev = netdev_priv(netdev); | |
739 | int res; | |
740 | ||
741 | if (dev->rx_skb == NULL) | |
742 | dev->rx_skb = pull_skb(dev); | |
743 | if (!dev->rx_skb) | |
744 | return -ENOMEM; | |
745 | ||
746 | set_registers(dev, IDR, 6, netdev->dev_addr); | |
141b9e66 | 747 | |
1da177e4 LT |
748 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), |
749 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
23219c13 PC |
750 | if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { |
751 | if (res == -ENODEV) | |
752 | netif_device_detach(dev->netdev); | |
4dc89948 | 753 | dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); |
23219c13 PC |
754 | return res; |
755 | } | |
1da177e4 LT |
756 | usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), |
757 | dev->intr_buff, INTBUFSIZE, intr_callback, | |
758 | dev, dev->intr_interval); | |
23219c13 PC |
759 | if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { |
760 | if (res == -ENODEV) | |
761 | netif_device_detach(dev->netdev); | |
4dc89948 | 762 | dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); |
23219c13 PC |
763 | usb_kill_urb(dev->rx_urb); |
764 | return res; | |
765 | } | |
1da177e4 LT |
766 | enable_net_traffic(dev); |
767 | set_carrier(netdev); | |
23219c13 | 768 | netif_start_queue(netdev); |
1da177e4 LT |
769 | |
770 | return res; | |
771 | } | |
772 | ||
773 | static int rtl8150_close(struct net_device *netdev) | |
774 | { | |
775 | rtl8150_t *dev = netdev_priv(netdev); | |
1da177e4 LT |
776 | |
777 | netif_stop_queue(netdev); | |
778 | if (!test_bit(RTL8150_UNPLUG, &dev->flags)) | |
779 | disable_net_traffic(dev); | |
780 | unlink_all_urbs(dev); | |
781 | ||
1abe7cd9 | 782 | return 0; |
1da177e4 LT |
783 | } |
784 | ||
785 | static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
786 | { | |
787 | rtl8150_t *dev = netdev_priv(netdev); | |
788 | ||
7826d43f JP |
789 | strlcpy(info->driver, driver_name, sizeof(info->driver)); |
790 | strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); | |
791 | usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); | |
1da177e4 LT |
792 | } |
793 | ||
b66239b6 PR |
794 | static int rtl8150_get_link_ksettings(struct net_device *netdev, |
795 | struct ethtool_link_ksettings *ecmd) | |
1da177e4 LT |
796 | { |
797 | rtl8150_t *dev = netdev_priv(netdev); | |
798 | short lpa, bmcr; | |
b66239b6 | 799 | u32 supported; |
1da177e4 | 800 | |
b66239b6 | 801 | supported = (SUPPORTED_10baseT_Half | |
1da177e4 LT |
802 | SUPPORTED_10baseT_Full | |
803 | SUPPORTED_100baseT_Half | | |
804 | SUPPORTED_100baseT_Full | | |
805 | SUPPORTED_Autoneg | | |
806 | SUPPORTED_TP | SUPPORTED_MII); | |
b66239b6 PR |
807 | ecmd->base.port = PORT_TP; |
808 | ecmd->base.phy_address = dev->phy; | |
1da177e4 LT |
809 | get_registers(dev, BMCR, 2, &bmcr); |
810 | get_registers(dev, ANLP, 2, &lpa); | |
811 | if (bmcr & BMCR_ANENABLE) { | |
70739497 DD |
812 | u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? |
813 | SPEED_100 : SPEED_10); | |
b66239b6 PR |
814 | ecmd->base.speed = speed; |
815 | ecmd->base.autoneg = AUTONEG_ENABLE; | |
70739497 | 816 | if (speed == SPEED_100) |
b66239b6 | 817 | ecmd->base.duplex = (lpa & LPA_100FULL) ? |
1da177e4 LT |
818 | DUPLEX_FULL : DUPLEX_HALF; |
819 | else | |
b66239b6 | 820 | ecmd->base.duplex = (lpa & LPA_10FULL) ? |
1da177e4 LT |
821 | DUPLEX_FULL : DUPLEX_HALF; |
822 | } else { | |
b66239b6 PR |
823 | ecmd->base.autoneg = AUTONEG_DISABLE; |
824 | ecmd->base.speed = ((bmcr & BMCR_SPEED100) ? | |
825 | SPEED_100 : SPEED_10); | |
826 | ecmd->base.duplex = (bmcr & BMCR_FULLDPLX) ? | |
1da177e4 LT |
827 | DUPLEX_FULL : DUPLEX_HALF; |
828 | } | |
b66239b6 PR |
829 | |
830 | ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported, | |
831 | supported); | |
832 | ||
1da177e4 LT |
833 | return 0; |
834 | } | |
835 | ||
0fc0b732 | 836 | static const struct ethtool_ops ops = { |
1da177e4 | 837 | .get_drvinfo = rtl8150_get_drvinfo, |
b66239b6 PR |
838 | .get_link = ethtool_op_get_link, |
839 | .get_link_ksettings = rtl8150_get_link_ksettings, | |
1da177e4 LT |
840 | }; |
841 | ||
842 | static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) | |
843 | { | |
844 | rtl8150_t *dev = netdev_priv(netdev); | |
845 | u16 *data = (u16 *) & rq->ifr_ifru; | |
846 | int res = 0; | |
847 | ||
848 | switch (cmd) { | |
849 | case SIOCDEVPRIVATE: | |
850 | data[0] = dev->phy; | |
851 | case SIOCDEVPRIVATE + 1: | |
852 | read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); | |
853 | break; | |
854 | case SIOCDEVPRIVATE + 2: | |
855 | if (!capable(CAP_NET_ADMIN)) | |
856 | return -EPERM; | |
857 | write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); | |
858 | break; | |
859 | default: | |
860 | res = -EOPNOTSUPP; | |
861 | } | |
862 | ||
863 | return res; | |
864 | } | |
865 | ||
d79f7ef4 SH |
866 | static const struct net_device_ops rtl8150_netdev_ops = { |
867 | .ndo_open = rtl8150_open, | |
868 | .ndo_stop = rtl8150_close, | |
869 | .ndo_do_ioctl = rtl8150_ioctl, | |
870 | .ndo_start_xmit = rtl8150_start_xmit, | |
141b9e66 | 871 | .ndo_tx_timeout = rtl8150_tx_timeout, |
afc4b13d | 872 | .ndo_set_rx_mode = rtl8150_set_multicast, |
d79f7ef4 SH |
873 | .ndo_set_mac_address = rtl8150_set_mac_address, |
874 | ||
d79f7ef4 SH |
875 | .ndo_validate_addr = eth_validate_addr, |
876 | }; | |
877 | ||
1da177e4 LT |
878 | static int rtl8150_probe(struct usb_interface *intf, |
879 | const struct usb_device_id *id) | |
880 | { | |
881 | struct usb_device *udev = interface_to_usbdev(intf); | |
882 | rtl8150_t *dev; | |
883 | struct net_device *netdev; | |
884 | ||
885 | netdev = alloc_etherdev(sizeof(rtl8150_t)); | |
41de8d4c | 886 | if (!netdev) |
1da177e4 | 887 | return -ENOMEM; |
1da177e4 LT |
888 | |
889 | dev = netdev_priv(netdev); | |
1da177e4 LT |
890 | |
891 | dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); | |
892 | if (!dev->intr_buff) { | |
893 | free_netdev(netdev); | |
894 | return -ENOMEM; | |
895 | } | |
896 | ||
897 | tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); | |
898 | spin_lock_init(&dev->rx_pool_lock); | |
141b9e66 | 899 | |
1da177e4 LT |
900 | dev->udev = udev; |
901 | dev->netdev = netdev; | |
d79f7ef4 | 902 | netdev->netdev_ops = &rtl8150_netdev_ops; |
1da177e4 | 903 | netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; |
7ad24ea4 | 904 | netdev->ethtool_ops = &ops; |
1da177e4 LT |
905 | dev->intr_interval = 100; /* 100ms */ |
906 | ||
907 | if (!alloc_all_urbs(dev)) { | |
21f52432 | 908 | dev_err(&intf->dev, "out of memory\n"); |
1da177e4 LT |
909 | goto out; |
910 | } | |
911 | if (!rtl8150_reset(dev)) { | |
21f52432 | 912 | dev_err(&intf->dev, "couldn't reset the device\n"); |
1da177e4 LT |
913 | goto out1; |
914 | } | |
915 | fill_skb_pool(dev); | |
916 | set_ethernet_addr(dev); | |
141b9e66 | 917 | |
1da177e4 LT |
918 | usb_set_intfdata(intf, dev); |
919 | SET_NETDEV_DEV(netdev, &intf->dev); | |
920 | if (register_netdev(netdev) != 0) { | |
21f52432 | 921 | dev_err(&intf->dev, "couldn't register the device\n"); |
1da177e4 LT |
922 | goto out2; |
923 | } | |
09abfa80 | 924 | |
880c9c66 | 925 | dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); |
09abfa80 | 926 | |
1da177e4 LT |
927 | return 0; |
928 | ||
929 | out2: | |
930 | usb_set_intfdata(intf, NULL); | |
931 | free_skb_pool(dev); | |
932 | out1: | |
933 | free_all_urbs(dev); | |
934 | out: | |
935 | kfree(dev->intr_buff); | |
936 | free_netdev(netdev); | |
937 | return -EIO; | |
938 | } | |
939 | ||
940 | static void rtl8150_disconnect(struct usb_interface *intf) | |
941 | { | |
942 | rtl8150_t *dev = usb_get_intfdata(intf); | |
943 | ||
944 | usb_set_intfdata(intf, NULL); | |
945 | if (dev) { | |
946 | set_bit(RTL8150_UNPLUG, &dev->flags); | |
eff674a5 | 947 | tasklet_kill(&dev->tl); |
1da177e4 LT |
948 | unregister_netdev(dev->netdev); |
949 | unlink_all_urbs(dev); | |
950 | free_all_urbs(dev); | |
951 | free_skb_pool(dev); | |
952 | if (dev->rx_skb) | |
953 | dev_kfree_skb(dev->rx_skb); | |
954 | kfree(dev->intr_buff); | |
955 | free_netdev(dev->netdev); | |
956 | } | |
957 | } | |
958 | ||
141b9e66 | 959 | static struct usb_driver rtl8150_driver = { |
960 | .name = driver_name, | |
961 | .probe = rtl8150_probe, | |
962 | .disconnect = rtl8150_disconnect, | |
963 | .id_table = rtl8150_table, | |
964 | .suspend = rtl8150_suspend, | |
e1f12eb6 SS |
965 | .resume = rtl8150_resume, |
966 | .disable_hub_initiated_lpm = 1, | |
141b9e66 | 967 | }; |
968 | ||
d632eb1b | 969 | module_usb_driver(rtl8150_driver); |
1da177e4 LT |
970 | |
971 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
972 | MODULE_DESCRIPTION(DRIVER_DESC); | |
973 | MODULE_LICENSE("GPL"); |