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/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 | ||
1da177e4 LT |
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 | ||
89 | #define RTL8150_MTU 1540 | |
90 | #define RTL8150_TX_TIMEOUT (HZ) | |
91 | #define RX_SKB_POOL_SIZE 4 | |
92 | ||
93 | /* rtl8150 flags */ | |
94 | #define RTL8150_HW_CRC 0 | |
95 | #define RX_REG_SET 1 | |
96 | #define RTL8150_UNPLUG 2 | |
97 | #define RX_URB_FAIL 3 | |
98 | ||
99 | /* Define these values to match your device */ | |
5859271e | 100 | #define VENDOR_ID_REALTEK 0x0bda |
1da177e4 | 101 | #define VENDOR_ID_MELCO 0x0411 |
5859271e | 102 | #define VENDOR_ID_MICRONET 0x3980 |
1da177e4 | 103 | #define VENDOR_ID_LONGSHINE 0x07b8 |
5859271e | 104 | #define VENDOR_ID_OQO 0x1557 |
b6c2799d | 105 | #define VENDOR_ID_ZYXEL 0x0586 |
1da177e4 LT |
106 | |
107 | #define PRODUCT_ID_RTL8150 0x8150 | |
108 | #define PRODUCT_ID_LUAKTX 0x0012 | |
109 | #define PRODUCT_ID_LCS8138TX 0x401a | |
110 | #define PRODUCT_ID_SP128AR 0x0003 | |
b6c2799d | 111 | #define PRODUCT_ID_PRESTIGE 0x401a |
1da177e4 LT |
112 | |
113 | #undef EEPROM_WRITE | |
114 | ||
115 | /* table of devices that work with this driver */ | |
116 | static struct usb_device_id rtl8150_table[] = { | |
117 | {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, | |
118 | {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, | |
119 | {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, | |
120 | {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, | |
5859271e | 121 | {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, |
b6c2799d | 122 | {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, |
1da177e4 LT |
123 | {} |
124 | }; | |
125 | ||
126 | MODULE_DEVICE_TABLE(usb, rtl8150_table); | |
127 | ||
128 | struct rtl8150 { | |
129 | unsigned long flags; | |
130 | struct usb_device *udev; | |
131 | struct tasklet_struct tl; | |
1da177e4 | 132 | struct net_device *netdev; |
4d12997a | 133 | struct urb *rx_urb, *tx_urb, *intr_urb; |
1da177e4 LT |
134 | struct sk_buff *tx_skb, *rx_skb; |
135 | struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; | |
136 | spinlock_t rx_pool_lock; | |
137 | struct usb_ctrlrequest dr; | |
138 | int intr_interval; | |
1da177e4 LT |
139 | u8 *intr_buff; |
140 | u8 phy; | |
141 | }; | |
142 | ||
143 | typedef struct rtl8150 rtl8150_t; | |
144 | ||
4d12997a PM |
145 | struct async_req { |
146 | struct usb_ctrlrequest dr; | |
147 | u16 rx_creg; | |
148 | }; | |
149 | ||
1da177e4 LT |
150 | static const char driver_name [] = "rtl8150"; |
151 | ||
1da177e4 LT |
152 | /* |
153 | ** | |
154 | ** device related part of the code | |
155 | ** | |
156 | */ | |
157 | static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) | |
158 | { | |
159 | return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
160 | RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, | |
161 | indx, 0, data, size, 500); | |
162 | } | |
163 | ||
164 | static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) | |
165 | { | |
166 | return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
167 | RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, | |
168 | indx, 0, data, size, 500); | |
169 | } | |
170 | ||
4d12997a | 171 | static void async_set_reg_cb(struct urb *urb) |
1da177e4 | 172 | { |
4d12997a | 173 | struct async_req *req = (struct async_req *)urb->context; |
c94cb314 | 174 | int status = urb->status; |
1da177e4 | 175 | |
4d12997a PM |
176 | if (status < 0) |
177 | dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); | |
178 | kfree(req); | |
179 | usb_free_urb(urb); | |
1da177e4 LT |
180 | } |
181 | ||
4d12997a | 182 | static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) |
1da177e4 | 183 | { |
4d12997a PM |
184 | int res = -ENOMEM; |
185 | struct urb *async_urb; | |
186 | struct async_req *req; | |
187 | ||
188 | req = kmalloc(sizeof(struct async_req), GFP_ATOMIC); | |
189 | if (req == NULL) | |
190 | return res; | |
191 | async_urb = usb_alloc_urb(0, GFP_ATOMIC); | |
192 | if (async_urb == NULL) { | |
193 | kfree(req); | |
194 | return res; | |
195 | } | |
196 | req->rx_creg = cpu_to_le16(reg); | |
197 | req->dr.bRequestType = RTL8150_REQT_WRITE; | |
198 | req->dr.bRequest = RTL8150_REQ_SET_REGS; | |
199 | req->dr.wIndex = 0; | |
200 | req->dr.wValue = cpu_to_le16(indx); | |
201 | req->dr.wLength = cpu_to_le16(size); | |
202 | usb_fill_control_urb(async_urb, dev->udev, | |
203 | usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, | |
204 | &req->rx_creg, size, async_set_reg_cb, req); | |
205 | res = usb_submit_urb(async_urb, GFP_ATOMIC); | |
206 | if (res) { | |
207 | if (res == -ENODEV) | |
23219c13 | 208 | netif_device_detach(dev->netdev); |
4d12997a PM |
209 | dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); |
210 | } | |
211 | return res; | |
1da177e4 LT |
212 | } |
213 | ||
214 | static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) | |
215 | { | |
216 | int i; | |
217 | u8 data[3], tmp; | |
218 | ||
219 | data[0] = phy; | |
220 | data[1] = data[2] = 0; | |
221 | tmp = indx | PHY_READ | PHY_GO; | |
222 | i = 0; | |
223 | ||
224 | set_registers(dev, PHYADD, sizeof(data), data); | |
225 | set_registers(dev, PHYCNT, 1, &tmp); | |
226 | do { | |
227 | get_registers(dev, PHYCNT, 1, data); | |
228 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | |
229 | ||
c064efca | 230 | if (i <= MII_TIMEOUT) { |
1da177e4 LT |
231 | get_registers(dev, PHYDAT, 2, data); |
232 | *reg = data[0] | (data[1] << 8); | |
233 | return 0; | |
234 | } else | |
235 | return 1; | |
236 | } | |
237 | ||
238 | static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) | |
239 | { | |
240 | int i; | |
241 | u8 data[3], tmp; | |
242 | ||
243 | data[0] = phy; | |
886ae1fa AV |
244 | data[1] = reg & 0xff; |
245 | data[2] = (reg >> 8) & 0xff; | |
1da177e4 LT |
246 | tmp = indx | PHY_WRITE | PHY_GO; |
247 | i = 0; | |
248 | ||
249 | set_registers(dev, PHYADD, sizeof(data), data); | |
250 | set_registers(dev, PHYCNT, 1, &tmp); | |
251 | do { | |
252 | get_registers(dev, PHYCNT, 1, data); | |
253 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | |
254 | ||
c064efca | 255 | if (i <= MII_TIMEOUT) |
1da177e4 LT |
256 | return 0; |
257 | else | |
258 | return 1; | |
259 | } | |
260 | ||
261 | static inline void set_ethernet_addr(rtl8150_t * dev) | |
262 | { | |
263 | u8 node_id[6]; | |
264 | ||
265 | get_registers(dev, IDR, sizeof(node_id), node_id); | |
266 | memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id)); | |
267 | } | |
268 | ||
269 | static int rtl8150_set_mac_address(struct net_device *netdev, void *p) | |
270 | { | |
271 | struct sockaddr *addr = p; | |
272 | rtl8150_t *dev = netdev_priv(netdev); | |
1da177e4 LT |
273 | |
274 | if (netif_running(netdev)) | |
275 | return -EBUSY; | |
276 | ||
277 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
49ae25b0 | 278 | netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr); |
1da177e4 | 279 | /* Set the IDR registers. */ |
6057912d | 280 | set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); |
1da177e4 LT |
281 | #ifdef EEPROM_WRITE |
282 | { | |
d649a284 | 283 | int i; |
1da177e4 LT |
284 | u8 cr; |
285 | /* Get the CR contents. */ | |
286 | get_registers(dev, CR, 1, &cr); | |
287 | /* Set the WEPROM bit (eeprom write enable). */ | |
288 | cr |= 0x20; | |
289 | set_registers(dev, CR, 1, &cr); | |
290 | /* Write the MAC address into eeprom. Eeprom writes must be word-sized, | |
291 | so we need to split them up. */ | |
292 | for (i = 0; i * 2 < netdev->addr_len; i++) { | |
141b9e66 | 293 | set_registers(dev, IDR_EEPROM + (i * 2), 2, |
1da177e4 LT |
294 | netdev->dev_addr + (i * 2)); |
295 | } | |
296 | /* Clear the WEPROM bit (preventing accidental eeprom writes). */ | |
297 | cr &= 0xdf; | |
298 | set_registers(dev, CR, 1, &cr); | |
299 | } | |
300 | #endif | |
301 | return 0; | |
302 | } | |
303 | ||
304 | static int rtl8150_reset(rtl8150_t * dev) | |
305 | { | |
306 | u8 data = 0x10; | |
307 | int i = HZ; | |
308 | ||
309 | set_registers(dev, CR, 1, &data); | |
310 | do { | |
311 | get_registers(dev, CR, 1, &data); | |
312 | } while ((data & 0x10) && --i); | |
313 | ||
314 | return (i > 0) ? 1 : 0; | |
315 | } | |
316 | ||
317 | static int alloc_all_urbs(rtl8150_t * dev) | |
318 | { | |
319 | dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
320 | if (!dev->rx_urb) | |
321 | return 0; | |
322 | dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
323 | if (!dev->tx_urb) { | |
324 | usb_free_urb(dev->rx_urb); | |
325 | return 0; | |
326 | } | |
327 | dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
328 | if (!dev->intr_urb) { | |
329 | usb_free_urb(dev->rx_urb); | |
330 | usb_free_urb(dev->tx_urb); | |
331 | return 0; | |
332 | } | |
1da177e4 LT |
333 | |
334 | return 1; | |
335 | } | |
336 | ||
337 | static void free_all_urbs(rtl8150_t * dev) | |
338 | { | |
339 | usb_free_urb(dev->rx_urb); | |
340 | usb_free_urb(dev->tx_urb); | |
341 | usb_free_urb(dev->intr_urb); | |
1da177e4 LT |
342 | } |
343 | ||
344 | static void unlink_all_urbs(rtl8150_t * dev) | |
345 | { | |
346 | usb_kill_urb(dev->rx_urb); | |
347 | usb_kill_urb(dev->tx_urb); | |
348 | usb_kill_urb(dev->intr_urb); | |
1da177e4 LT |
349 | } |
350 | ||
351 | static inline struct sk_buff *pull_skb(rtl8150_t *dev) | |
352 | { | |
353 | struct sk_buff *skb; | |
354 | int i; | |
355 | ||
356 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | |
357 | if (dev->rx_skb_pool[i]) { | |
358 | skb = dev->rx_skb_pool[i]; | |
359 | dev->rx_skb_pool[i] = NULL; | |
360 | return skb; | |
361 | } | |
362 | } | |
363 | return NULL; | |
364 | } | |
365 | ||
7d12e780 | 366 | static void read_bulk_callback(struct urb *urb) |
1da177e4 LT |
367 | { |
368 | rtl8150_t *dev; | |
369 | unsigned pkt_len, res; | |
370 | struct sk_buff *skb; | |
371 | struct net_device *netdev; | |
372 | u16 rx_stat; | |
c94cb314 ON |
373 | int status = urb->status; |
374 | int result; | |
1da177e4 LT |
375 | |
376 | dev = urb->context; | |
377 | if (!dev) | |
378 | return; | |
379 | if (test_bit(RTL8150_UNPLUG, &dev->flags)) | |
380 | return; | |
381 | netdev = dev->netdev; | |
382 | if (!netif_device_present(netdev)) | |
383 | return; | |
384 | ||
c94cb314 | 385 | switch (status) { |
1da177e4 LT |
386 | case 0: |
387 | break; | |
388 | case -ENOENT: | |
389 | return; /* the urb is in unlink state */ | |
38e2bfc9 | 390 | case -ETIME: |
342a437e AGR |
391 | if (printk_ratelimit()) |
392 | dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); | |
1da177e4 LT |
393 | goto goon; |
394 | default: | |
342a437e AGR |
395 | if (printk_ratelimit()) |
396 | dev_warn(&urb->dev->dev, "Rx status %d\n", status); | |
1da177e4 LT |
397 | goto goon; |
398 | } | |
399 | ||
400 | if (!dev->rx_skb) | |
401 | goto resched; | |
402 | /* protect against short packets (tell me why we got some?!?) */ | |
403 | if (urb->actual_length < 4) | |
404 | goto goon; | |
405 | ||
406 | res = urb->actual_length; | |
407 | rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4)); | |
408 | pkt_len = res - 4; | |
409 | ||
410 | skb_put(dev->rx_skb, pkt_len); | |
411 | dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); | |
412 | netif_rx(dev->rx_skb); | |
b7e41e23 SH |
413 | netdev->stats.rx_packets++; |
414 | netdev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
415 | |
416 | spin_lock(&dev->rx_pool_lock); | |
417 | skb = pull_skb(dev); | |
418 | spin_unlock(&dev->rx_pool_lock); | |
419 | if (!skb) | |
420 | goto resched; | |
421 | ||
422 | dev->rx_skb = skb; | |
423 | goon: | |
424 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | |
425 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
c94cb314 ON |
426 | result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); |
427 | if (result == -ENODEV) | |
23219c13 | 428 | netif_device_detach(dev->netdev); |
c94cb314 | 429 | else if (result) { |
1da177e4 LT |
430 | set_bit(RX_URB_FAIL, &dev->flags); |
431 | goto resched; | |
432 | } else { | |
433 | clear_bit(RX_URB_FAIL, &dev->flags); | |
434 | } | |
435 | ||
436 | return; | |
437 | resched: | |
438 | tasklet_schedule(&dev->tl); | |
439 | } | |
440 | ||
7d12e780 | 441 | static void write_bulk_callback(struct urb *urb) |
1da177e4 LT |
442 | { |
443 | rtl8150_t *dev; | |
c94cb314 | 444 | int status = urb->status; |
1da177e4 LT |
445 | |
446 | dev = urb->context; | |
447 | if (!dev) | |
448 | return; | |
449 | dev_kfree_skb_irq(dev->tx_skb); | |
450 | if (!netif_device_present(dev->netdev)) | |
451 | return; | |
c94cb314 | 452 | if (status) |
880c9c66 | 453 | dev_info(&urb->dev->dev, "%s: Tx status %d\n", |
c94cb314 | 454 | dev->netdev->name, status); |
1da177e4 LT |
455 | dev->netdev->trans_start = jiffies; |
456 | netif_wake_queue(dev->netdev); | |
457 | } | |
458 | ||
7d12e780 | 459 | static void intr_callback(struct urb *urb) |
1da177e4 LT |
460 | { |
461 | rtl8150_t *dev; | |
462 | __u8 *d; | |
c94cb314 ON |
463 | int status = urb->status; |
464 | int res; | |
1da177e4 LT |
465 | |
466 | dev = urb->context; | |
467 | if (!dev) | |
468 | return; | |
c94cb314 | 469 | switch (status) { |
1da177e4 LT |
470 | case 0: /* success */ |
471 | break; | |
472 | case -ECONNRESET: /* unlink */ | |
473 | case -ENOENT: | |
474 | case -ESHUTDOWN: | |
475 | return; | |
476 | /* -EPIPE: should clear the halt */ | |
477 | default: | |
880c9c66 | 478 | dev_info(&urb->dev->dev, "%s: intr status %d\n", |
c94cb314 | 479 | dev->netdev->name, status); |
1da177e4 LT |
480 | goto resubmit; |
481 | } | |
482 | ||
483 | d = urb->transfer_buffer; | |
484 | if (d[0] & TSR_ERRORS) { | |
b7e41e23 | 485 | dev->netdev->stats.tx_errors++; |
1da177e4 | 486 | if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) |
b7e41e23 | 487 | dev->netdev->stats.tx_aborted_errors++; |
1da177e4 | 488 | if (d[INT_TSR] & TSR_LCOL) |
b7e41e23 | 489 | dev->netdev->stats.tx_window_errors++; |
1da177e4 | 490 | if (d[INT_TSR] & TSR_LOSS_CRS) |
b7e41e23 | 491 | dev->netdev->stats.tx_carrier_errors++; |
1da177e4 LT |
492 | } |
493 | /* Report link status changes to the network stack */ | |
494 | if ((d[INT_MSR] & MSR_LINK) == 0) { | |
495 | if (netif_carrier_ok(dev->netdev)) { | |
496 | netif_carrier_off(dev->netdev); | |
49ae25b0 | 497 | netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); |
1da177e4 LT |
498 | } |
499 | } else { | |
500 | if (!netif_carrier_ok(dev->netdev)) { | |
501 | netif_carrier_on(dev->netdev); | |
49ae25b0 | 502 | netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); |
1da177e4 LT |
503 | } |
504 | } | |
505 | ||
506 | resubmit: | |
c94cb314 ON |
507 | res = usb_submit_urb (urb, GFP_ATOMIC); |
508 | if (res == -ENODEV) | |
23219c13 | 509 | netif_device_detach(dev->netdev); |
c94cb314 | 510 | else if (res) |
21f52432 GKH |
511 | dev_err(&dev->udev->dev, |
512 | "can't resubmit intr, %s-%s/input0, status %d\n", | |
513 | dev->udev->bus->bus_name, dev->udev->devpath, res); | |
1da177e4 LT |
514 | } |
515 | ||
23219c13 PC |
516 | static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) |
517 | { | |
518 | rtl8150_t *dev = usb_get_intfdata(intf); | |
519 | ||
520 | netif_device_detach(dev->netdev); | |
521 | ||
522 | if (netif_running(dev->netdev)) { | |
523 | usb_kill_urb(dev->rx_urb); | |
524 | usb_kill_urb(dev->intr_urb); | |
525 | } | |
526 | return 0; | |
527 | } | |
528 | ||
529 | static int rtl8150_resume(struct usb_interface *intf) | |
530 | { | |
531 | rtl8150_t *dev = usb_get_intfdata(intf); | |
532 | ||
533 | netif_device_attach(dev->netdev); | |
534 | if (netif_running(dev->netdev)) { | |
535 | dev->rx_urb->status = 0; | |
536 | dev->rx_urb->actual_length = 0; | |
7d12e780 | 537 | read_bulk_callback(dev->rx_urb); |
23219c13 PC |
538 | |
539 | dev->intr_urb->status = 0; | |
540 | dev->intr_urb->actual_length = 0; | |
7d12e780 | 541 | intr_callback(dev->intr_urb); |
23219c13 PC |
542 | } |
543 | return 0; | |
544 | } | |
1da177e4 LT |
545 | |
546 | /* | |
547 | ** | |
548 | ** network related part of the code | |
549 | ** | |
550 | */ | |
551 | ||
552 | static void fill_skb_pool(rtl8150_t *dev) | |
553 | { | |
554 | struct sk_buff *skb; | |
555 | int i; | |
556 | ||
557 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | |
558 | if (dev->rx_skb_pool[i]) | |
559 | continue; | |
560 | skb = dev_alloc_skb(RTL8150_MTU + 2); | |
561 | if (!skb) { | |
562 | return; | |
563 | } | |
1da177e4 LT |
564 | skb_reserve(skb, 2); |
565 | dev->rx_skb_pool[i] = skb; | |
566 | } | |
567 | } | |
568 | ||
569 | static void free_skb_pool(rtl8150_t *dev) | |
570 | { | |
571 | int i; | |
572 | ||
573 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) | |
574 | if (dev->rx_skb_pool[i]) | |
575 | dev_kfree_skb(dev->rx_skb_pool[i]); | |
576 | } | |
577 | ||
141b9e66 | 578 | static void rx_fixup(unsigned long data) |
579 | { | |
580 | struct rtl8150 *dev = (struct rtl8150 *)data; | |
581 | struct sk_buff *skb; | |
582 | int status; | |
583 | ||
584 | spin_lock_irq(&dev->rx_pool_lock); | |
585 | fill_skb_pool(dev); | |
586 | spin_unlock_irq(&dev->rx_pool_lock); | |
587 | if (test_bit(RX_URB_FAIL, &dev->flags)) | |
588 | if (dev->rx_skb) | |
589 | goto try_again; | |
590 | spin_lock_irq(&dev->rx_pool_lock); | |
591 | skb = pull_skb(dev); | |
592 | spin_unlock_irq(&dev->rx_pool_lock); | |
593 | if (skb == NULL) | |
594 | goto tlsched; | |
595 | dev->rx_skb = skb; | |
596 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | |
597 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
598 | try_again: | |
599 | status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); | |
600 | if (status == -ENODEV) { | |
601 | netif_device_detach(dev->netdev); | |
602 | } else if (status) { | |
603 | set_bit(RX_URB_FAIL, &dev->flags); | |
604 | goto tlsched; | |
605 | } else { | |
606 | clear_bit(RX_URB_FAIL, &dev->flags); | |
607 | } | |
608 | ||
609 | return; | |
610 | tlsched: | |
611 | tasklet_schedule(&dev->tl); | |
612 | } | |
613 | ||
1da177e4 LT |
614 | static int enable_net_traffic(rtl8150_t * dev) |
615 | { | |
616 | u8 cr, tcr, rcr, msr; | |
617 | ||
618 | if (!rtl8150_reset(dev)) { | |
4dc89948 | 619 | dev_warn(&dev->udev->dev, "device reset failed\n"); |
1da177e4 LT |
620 | } |
621 | /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ | |
622 | rcr = 0x9e; | |
1da177e4 LT |
623 | tcr = 0xd8; |
624 | cr = 0x0c; | |
625 | if (!(rcr & 0x80)) | |
626 | set_bit(RTL8150_HW_CRC, &dev->flags); | |
627 | set_registers(dev, RCR, 1, &rcr); | |
628 | set_registers(dev, TCR, 1, &tcr); | |
629 | set_registers(dev, CR, 1, &cr); | |
630 | get_registers(dev, MSR, 1, &msr); | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
635 | static void disable_net_traffic(rtl8150_t * dev) | |
636 | { | |
637 | u8 cr; | |
638 | ||
639 | get_registers(dev, CR, 1, &cr); | |
640 | cr &= 0xf3; | |
641 | set_registers(dev, CR, 1, &cr); | |
642 | } | |
643 | ||
1da177e4 LT |
644 | static void rtl8150_tx_timeout(struct net_device *netdev) |
645 | { | |
646 | rtl8150_t *dev = netdev_priv(netdev); | |
4dc89948 | 647 | dev_warn(&netdev->dev, "Tx timeout.\n"); |
1da177e4 | 648 | usb_unlink_urb(dev->tx_urb); |
b7e41e23 | 649 | netdev->stats.tx_errors++; |
1da177e4 LT |
650 | } |
651 | ||
652 | static void rtl8150_set_multicast(struct net_device *netdev) | |
653 | { | |
654 | rtl8150_t *dev = netdev_priv(netdev); | |
4d12997a PM |
655 | u16 rx_creg = 0x9e; |
656 | ||
1da177e4 LT |
657 | netif_stop_queue(netdev); |
658 | if (netdev->flags & IFF_PROMISC) { | |
4d12997a | 659 | rx_creg |= 0x0001; |
880c9c66 | 660 | dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); |
4cd24eaf | 661 | } else if (!netdev_mc_empty(netdev) || |
1da177e4 | 662 | (netdev->flags & IFF_ALLMULTI)) { |
4d12997a PM |
663 | rx_creg &= 0xfffe; |
664 | rx_creg |= 0x0002; | |
880c9c66 | 665 | dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name); |
1da177e4 LT |
666 | } else { |
667 | /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ | |
4d12997a | 668 | rx_creg &= 0x00fc; |
1da177e4 | 669 | } |
4d12997a | 670 | async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); |
1da177e4 LT |
671 | netif_wake_queue(netdev); |
672 | } | |
673 | ||
25a79c41 SH |
674 | static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, |
675 | struct net_device *netdev) | |
1da177e4 LT |
676 | { |
677 | rtl8150_t *dev = netdev_priv(netdev); | |
678 | int count, res; | |
679 | ||
680 | netif_stop_queue(netdev); | |
681 | count = (skb->len < 60) ? 60 : skb->len; | |
682 | count = (count & 0x3f) ? count : count + 1; | |
683 | dev->tx_skb = skb; | |
684 | usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), | |
685 | skb->data, count, write_bulk_callback, dev); | |
686 | if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { | |
23219c13 PC |
687 | /* Can we get/handle EPIPE here? */ |
688 | if (res == -ENODEV) | |
689 | netif_device_detach(dev->netdev); | |
690 | else { | |
4dc89948 | 691 | dev_warn(&netdev->dev, "failed tx_urb %d\n", res); |
b7e41e23 | 692 | netdev->stats.tx_errors++; |
23219c13 PC |
693 | netif_start_queue(netdev); |
694 | } | |
1da177e4 | 695 | } else { |
b7e41e23 SH |
696 | netdev->stats.tx_packets++; |
697 | netdev->stats.tx_bytes += skb->len; | |
1da177e4 LT |
698 | netdev->trans_start = jiffies; |
699 | } | |
700 | ||
6ed10654 | 701 | return NETDEV_TX_OK; |
1da177e4 LT |
702 | } |
703 | ||
704 | ||
705 | static void set_carrier(struct net_device *netdev) | |
706 | { | |
707 | rtl8150_t *dev = netdev_priv(netdev); | |
708 | short tmp; | |
709 | ||
710 | get_registers(dev, CSCR, 2, &tmp); | |
711 | if (tmp & CSCR_LINK_STATUS) | |
712 | netif_carrier_on(netdev); | |
713 | else | |
714 | netif_carrier_off(netdev); | |
715 | } | |
716 | ||
717 | static int rtl8150_open(struct net_device *netdev) | |
718 | { | |
719 | rtl8150_t *dev = netdev_priv(netdev); | |
720 | int res; | |
721 | ||
722 | if (dev->rx_skb == NULL) | |
723 | dev->rx_skb = pull_skb(dev); | |
724 | if (!dev->rx_skb) | |
725 | return -ENOMEM; | |
726 | ||
727 | set_registers(dev, IDR, 6, netdev->dev_addr); | |
141b9e66 | 728 | |
1da177e4 LT |
729 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), |
730 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
23219c13 PC |
731 | if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { |
732 | if (res == -ENODEV) | |
733 | netif_device_detach(dev->netdev); | |
4dc89948 | 734 | dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); |
23219c13 PC |
735 | return res; |
736 | } | |
1da177e4 LT |
737 | usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), |
738 | dev->intr_buff, INTBUFSIZE, intr_callback, | |
739 | dev, dev->intr_interval); | |
23219c13 PC |
740 | if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { |
741 | if (res == -ENODEV) | |
742 | netif_device_detach(dev->netdev); | |
4dc89948 | 743 | dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); |
23219c13 PC |
744 | usb_kill_urb(dev->rx_urb); |
745 | return res; | |
746 | } | |
1da177e4 LT |
747 | enable_net_traffic(dev); |
748 | set_carrier(netdev); | |
23219c13 | 749 | netif_start_queue(netdev); |
1da177e4 LT |
750 | |
751 | return res; | |
752 | } | |
753 | ||
754 | static int rtl8150_close(struct net_device *netdev) | |
755 | { | |
756 | rtl8150_t *dev = netdev_priv(netdev); | |
757 | int res = 0; | |
758 | ||
759 | netif_stop_queue(netdev); | |
760 | if (!test_bit(RTL8150_UNPLUG, &dev->flags)) | |
761 | disable_net_traffic(dev); | |
762 | unlink_all_urbs(dev); | |
763 | ||
764 | return res; | |
765 | } | |
766 | ||
767 | static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
768 | { | |
769 | rtl8150_t *dev = netdev_priv(netdev); | |
770 | ||
7826d43f JP |
771 | strlcpy(info->driver, driver_name, sizeof(info->driver)); |
772 | strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); | |
773 | usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); | |
1da177e4 LT |
774 | } |
775 | ||
776 | static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd) | |
777 | { | |
778 | rtl8150_t *dev = netdev_priv(netdev); | |
779 | short lpa, bmcr; | |
780 | ||
781 | ecmd->supported = (SUPPORTED_10baseT_Half | | |
782 | SUPPORTED_10baseT_Full | | |
783 | SUPPORTED_100baseT_Half | | |
784 | SUPPORTED_100baseT_Full | | |
785 | SUPPORTED_Autoneg | | |
786 | SUPPORTED_TP | SUPPORTED_MII); | |
787 | ecmd->port = PORT_TP; | |
788 | ecmd->transceiver = XCVR_INTERNAL; | |
789 | ecmd->phy_address = dev->phy; | |
790 | get_registers(dev, BMCR, 2, &bmcr); | |
791 | get_registers(dev, ANLP, 2, &lpa); | |
792 | if (bmcr & BMCR_ANENABLE) { | |
70739497 DD |
793 | u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? |
794 | SPEED_100 : SPEED_10); | |
795 | ethtool_cmd_speed_set(ecmd, speed); | |
1da177e4 | 796 | ecmd->autoneg = AUTONEG_ENABLE; |
70739497 | 797 | if (speed == SPEED_100) |
1da177e4 LT |
798 | ecmd->duplex = (lpa & LPA_100FULL) ? |
799 | DUPLEX_FULL : DUPLEX_HALF; | |
800 | else | |
801 | ecmd->duplex = (lpa & LPA_10FULL) ? | |
802 | DUPLEX_FULL : DUPLEX_HALF; | |
803 | } else { | |
804 | ecmd->autoneg = AUTONEG_DISABLE; | |
70739497 DD |
805 | ethtool_cmd_speed_set(ecmd, ((bmcr & BMCR_SPEED100) ? |
806 | SPEED_100 : SPEED_10)); | |
1da177e4 LT |
807 | ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? |
808 | DUPLEX_FULL : DUPLEX_HALF; | |
809 | } | |
810 | return 0; | |
811 | } | |
812 | ||
0fc0b732 | 813 | static const struct ethtool_ops ops = { |
1da177e4 LT |
814 | .get_drvinfo = rtl8150_get_drvinfo, |
815 | .get_settings = rtl8150_get_settings, | |
816 | .get_link = ethtool_op_get_link | |
817 | }; | |
818 | ||
819 | static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) | |
820 | { | |
821 | rtl8150_t *dev = netdev_priv(netdev); | |
822 | u16 *data = (u16 *) & rq->ifr_ifru; | |
823 | int res = 0; | |
824 | ||
825 | switch (cmd) { | |
826 | case SIOCDEVPRIVATE: | |
827 | data[0] = dev->phy; | |
828 | case SIOCDEVPRIVATE + 1: | |
829 | read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); | |
830 | break; | |
831 | case SIOCDEVPRIVATE + 2: | |
832 | if (!capable(CAP_NET_ADMIN)) | |
833 | return -EPERM; | |
834 | write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); | |
835 | break; | |
836 | default: | |
837 | res = -EOPNOTSUPP; | |
838 | } | |
839 | ||
840 | return res; | |
841 | } | |
842 | ||
d79f7ef4 SH |
843 | static const struct net_device_ops rtl8150_netdev_ops = { |
844 | .ndo_open = rtl8150_open, | |
845 | .ndo_stop = rtl8150_close, | |
846 | .ndo_do_ioctl = rtl8150_ioctl, | |
847 | .ndo_start_xmit = rtl8150_start_xmit, | |
141b9e66 | 848 | .ndo_tx_timeout = rtl8150_tx_timeout, |
afc4b13d | 849 | .ndo_set_rx_mode = rtl8150_set_multicast, |
d79f7ef4 SH |
850 | .ndo_set_mac_address = rtl8150_set_mac_address, |
851 | ||
852 | .ndo_change_mtu = eth_change_mtu, | |
853 | .ndo_validate_addr = eth_validate_addr, | |
854 | }; | |
855 | ||
1da177e4 LT |
856 | static int rtl8150_probe(struct usb_interface *intf, |
857 | const struct usb_device_id *id) | |
858 | { | |
859 | struct usb_device *udev = interface_to_usbdev(intf); | |
860 | rtl8150_t *dev; | |
861 | struct net_device *netdev; | |
862 | ||
863 | netdev = alloc_etherdev(sizeof(rtl8150_t)); | |
41de8d4c | 864 | if (!netdev) |
1da177e4 | 865 | return -ENOMEM; |
1da177e4 LT |
866 | |
867 | dev = netdev_priv(netdev); | |
1da177e4 LT |
868 | |
869 | dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); | |
870 | if (!dev->intr_buff) { | |
871 | free_netdev(netdev); | |
872 | return -ENOMEM; | |
873 | } | |
874 | ||
875 | tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); | |
876 | spin_lock_init(&dev->rx_pool_lock); | |
141b9e66 | 877 | |
1da177e4 LT |
878 | dev->udev = udev; |
879 | dev->netdev = netdev; | |
d79f7ef4 | 880 | netdev->netdev_ops = &rtl8150_netdev_ops; |
1da177e4 | 881 | netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; |
1da177e4 LT |
882 | SET_ETHTOOL_OPS(netdev, &ops); |
883 | dev->intr_interval = 100; /* 100ms */ | |
884 | ||
885 | if (!alloc_all_urbs(dev)) { | |
21f52432 | 886 | dev_err(&intf->dev, "out of memory\n"); |
1da177e4 LT |
887 | goto out; |
888 | } | |
889 | if (!rtl8150_reset(dev)) { | |
21f52432 | 890 | dev_err(&intf->dev, "couldn't reset the device\n"); |
1da177e4 LT |
891 | goto out1; |
892 | } | |
893 | fill_skb_pool(dev); | |
894 | set_ethernet_addr(dev); | |
141b9e66 | 895 | |
1da177e4 LT |
896 | usb_set_intfdata(intf, dev); |
897 | SET_NETDEV_DEV(netdev, &intf->dev); | |
898 | if (register_netdev(netdev) != 0) { | |
21f52432 | 899 | dev_err(&intf->dev, "couldn't register the device\n"); |
1da177e4 LT |
900 | goto out2; |
901 | } | |
09abfa80 | 902 | |
880c9c66 | 903 | dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); |
09abfa80 | 904 | |
1da177e4 LT |
905 | return 0; |
906 | ||
907 | out2: | |
908 | usb_set_intfdata(intf, NULL); | |
909 | free_skb_pool(dev); | |
910 | out1: | |
911 | free_all_urbs(dev); | |
912 | out: | |
913 | kfree(dev->intr_buff); | |
914 | free_netdev(netdev); | |
915 | return -EIO; | |
916 | } | |
917 | ||
918 | static void rtl8150_disconnect(struct usb_interface *intf) | |
919 | { | |
920 | rtl8150_t *dev = usb_get_intfdata(intf); | |
921 | ||
922 | usb_set_intfdata(intf, NULL); | |
923 | if (dev) { | |
924 | set_bit(RTL8150_UNPLUG, &dev->flags); | |
eff674a5 | 925 | tasklet_kill(&dev->tl); |
1da177e4 LT |
926 | unregister_netdev(dev->netdev); |
927 | unlink_all_urbs(dev); | |
928 | free_all_urbs(dev); | |
929 | free_skb_pool(dev); | |
930 | if (dev->rx_skb) | |
931 | dev_kfree_skb(dev->rx_skb); | |
932 | kfree(dev->intr_buff); | |
933 | free_netdev(dev->netdev); | |
934 | } | |
935 | } | |
936 | ||
141b9e66 | 937 | static struct usb_driver rtl8150_driver = { |
938 | .name = driver_name, | |
939 | .probe = rtl8150_probe, | |
940 | .disconnect = rtl8150_disconnect, | |
941 | .id_table = rtl8150_table, | |
942 | .suspend = rtl8150_suspend, | |
e1f12eb6 SS |
943 | .resume = rtl8150_resume, |
944 | .disable_hub_initiated_lpm = 1, | |
141b9e66 | 945 | }; |
946 | ||
d632eb1b | 947 | module_usb_driver(rtl8150_driver); |
1da177e4 LT |
948 | |
949 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
950 | MODULE_DESCRIPTION(DRIVER_DESC); | |
951 | MODULE_LICENSE("GPL"); |