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Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net) | |
1da177e4 LT |
4 | */ |
5 | ||
1da177e4 LT |
6 | #include <linux/signal.h> |
7 | #include <linux/slab.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/netdevice.h> | |
10 | #include <linux/etherdevice.h> | |
11 | #include <linux/mii.h> | |
12 | #include <linux/ethtool.h> | |
13 | #include <linux/usb.h> | |
7c0f6ba6 | 14 | #include <linux/uaccess.h> |
1da177e4 LT |
15 | |
16 | /* Version Information */ | |
17 | #define DRIVER_VERSION "v0.6.2 (2004/08/27)" | |
18 | #define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>" | |
19 | #define DRIVER_DESC "rtl8150 based usb-ethernet driver" | |
20 | ||
21 | #define IDR 0x0120 | |
22 | #define MAR 0x0126 | |
23 | #define CR 0x012e | |
24 | #define TCR 0x012f | |
25 | #define RCR 0x0130 | |
26 | #define TSR 0x0132 | |
27 | #define RSR 0x0133 | |
28 | #define CON0 0x0135 | |
29 | #define CON1 0x0136 | |
30 | #define MSR 0x0137 | |
31 | #define PHYADD 0x0138 | |
32 | #define PHYDAT 0x0139 | |
33 | #define PHYCNT 0x013b | |
34 | #define GPPC 0x013d | |
35 | #define BMCR 0x0140 | |
36 | #define BMSR 0x0142 | |
37 | #define ANAR 0x0144 | |
38 | #define ANLP 0x0146 | |
39 | #define AER 0x0148 | |
40 | #define CSCR 0x014C /* This one has the link status */ | |
41 | #define CSCR_LINK_STATUS (1 << 3) | |
42 | ||
43 | #define IDR_EEPROM 0x1202 | |
44 | ||
45 | #define PHY_READ 0 | |
46 | #define PHY_WRITE 0x20 | |
47 | #define PHY_GO 0x40 | |
48 | ||
49 | #define MII_TIMEOUT 10 | |
50 | #define INTBUFSIZE 8 | |
51 | ||
52 | #define RTL8150_REQT_READ 0xc0 | |
53 | #define RTL8150_REQT_WRITE 0x40 | |
54 | #define RTL8150_REQ_GET_REGS 0x05 | |
55 | #define RTL8150_REQ_SET_REGS 0x05 | |
56 | ||
57 | ||
1da177e4 LT |
58 | /* Transmit status register errors */ |
59 | #define TSR_ECOL (1<<5) | |
60 | #define TSR_LCOL (1<<4) | |
61 | #define TSR_LOSS_CRS (1<<3) | |
62 | #define TSR_JBR (1<<2) | |
63 | #define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR) | |
64 | /* Receive status register errors */ | |
65 | #define RSR_CRC (1<<2) | |
66 | #define RSR_FAE (1<<1) | |
67 | #define RSR_ERRORS (RSR_CRC | RSR_FAE) | |
68 | ||
69 | /* Media status register definitions */ | |
70 | #define MSR_DUPLEX (1<<4) | |
71 | #define MSR_SPEED (1<<3) | |
72 | #define MSR_LINK (1<<2) | |
73 | ||
74 | /* Interrupt pipe data */ | |
75 | #define INT_TSR 0x00 | |
76 | #define INT_RSR 0x01 | |
77 | #define INT_MSR 0x02 | |
78 | #define INT_WAKSR 0x03 | |
79 | #define INT_TXOK_CNT 0x04 | |
80 | #define INT_RXLOST_CNT 0x05 | |
81 | #define INT_CRERR_CNT 0x06 | |
82 | #define INT_COL_CNT 0x07 | |
83 | ||
84 | ||
85 | #define RTL8150_MTU 1540 | |
86 | #define RTL8150_TX_TIMEOUT (HZ) | |
87 | #define RX_SKB_POOL_SIZE 4 | |
88 | ||
89 | /* rtl8150 flags */ | |
90 | #define RTL8150_HW_CRC 0 | |
91 | #define RX_REG_SET 1 | |
92 | #define RTL8150_UNPLUG 2 | |
93 | #define RX_URB_FAIL 3 | |
94 | ||
95 | /* Define these values to match your device */ | |
5859271e | 96 | #define VENDOR_ID_REALTEK 0x0bda |
1da177e4 | 97 | #define VENDOR_ID_MELCO 0x0411 |
5859271e | 98 | #define VENDOR_ID_MICRONET 0x3980 |
1da177e4 | 99 | #define VENDOR_ID_LONGSHINE 0x07b8 |
5859271e | 100 | #define VENDOR_ID_OQO 0x1557 |
b6c2799d | 101 | #define VENDOR_ID_ZYXEL 0x0586 |
1da177e4 LT |
102 | |
103 | #define PRODUCT_ID_RTL8150 0x8150 | |
104 | #define PRODUCT_ID_LUAKTX 0x0012 | |
105 | #define PRODUCT_ID_LCS8138TX 0x401a | |
106 | #define PRODUCT_ID_SP128AR 0x0003 | |
b6c2799d | 107 | #define PRODUCT_ID_PRESTIGE 0x401a |
1da177e4 LT |
108 | |
109 | #undef EEPROM_WRITE | |
110 | ||
111 | /* table of devices that work with this driver */ | |
e1cb90f2 | 112 | static const struct usb_device_id rtl8150_table[] = { |
1da177e4 LT |
113 | {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)}, |
114 | {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)}, | |
115 | {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)}, | |
116 | {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)}, | |
5859271e | 117 | {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)}, |
b6c2799d | 118 | {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)}, |
1da177e4 LT |
119 | {} |
120 | }; | |
121 | ||
122 | MODULE_DEVICE_TABLE(usb, rtl8150_table); | |
123 | ||
124 | struct rtl8150 { | |
125 | unsigned long flags; | |
126 | struct usb_device *udev; | |
127 | struct tasklet_struct tl; | |
1da177e4 | 128 | struct net_device *netdev; |
4d12997a | 129 | struct urb *rx_urb, *tx_urb, *intr_urb; |
1da177e4 LT |
130 | struct sk_buff *tx_skb, *rx_skb; |
131 | struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE]; | |
132 | spinlock_t rx_pool_lock; | |
133 | struct usb_ctrlrequest dr; | |
134 | int intr_interval; | |
1da177e4 LT |
135 | u8 *intr_buff; |
136 | u8 phy; | |
137 | }; | |
138 | ||
139 | typedef struct rtl8150 rtl8150_t; | |
140 | ||
4d12997a PM |
141 | struct async_req { |
142 | struct usb_ctrlrequest dr; | |
143 | u16 rx_creg; | |
144 | }; | |
145 | ||
1da177e4 LT |
146 | static const char driver_name [] = "rtl8150"; |
147 | ||
1da177e4 LT |
148 | /* |
149 | ** | |
150 | ** device related part of the code | |
151 | ** | |
152 | */ | |
153 | static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data) | |
154 | { | |
7926aff5 BH |
155 | void *buf; |
156 | int ret; | |
157 | ||
158 | buf = kmalloc(size, GFP_NOIO); | |
159 | if (!buf) | |
160 | return -ENOMEM; | |
161 | ||
162 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
163 | RTL8150_REQ_GET_REGS, RTL8150_REQT_READ, | |
164 | indx, 0, buf, size, 500); | |
165 | if (ret > 0 && ret <= size) | |
166 | memcpy(data, buf, ret); | |
167 | kfree(buf); | |
168 | return ret; | |
1da177e4 LT |
169 | } |
170 | ||
7926aff5 | 171 | static int set_registers(rtl8150_t * dev, u16 indx, u16 size, const void *data) |
1da177e4 | 172 | { |
7926aff5 BH |
173 | void *buf; |
174 | int ret; | |
175 | ||
176 | buf = kmemdup(data, size, GFP_NOIO); | |
177 | if (!buf) | |
178 | return -ENOMEM; | |
179 | ||
180 | ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
181 | RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE, | |
182 | indx, 0, buf, size, 500); | |
183 | kfree(buf); | |
184 | return ret; | |
1da177e4 LT |
185 | } |
186 | ||
4d12997a | 187 | static void async_set_reg_cb(struct urb *urb) |
1da177e4 | 188 | { |
4d12997a | 189 | struct async_req *req = (struct async_req *)urb->context; |
c94cb314 | 190 | int status = urb->status; |
1da177e4 | 191 | |
4d12997a PM |
192 | if (status < 0) |
193 | dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); | |
194 | kfree(req); | |
195 | usb_free_urb(urb); | |
1da177e4 LT |
196 | } |
197 | ||
4d12997a | 198 | static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) |
1da177e4 | 199 | { |
4d12997a PM |
200 | int res = -ENOMEM; |
201 | struct urb *async_urb; | |
202 | struct async_req *req; | |
203 | ||
204 | req = kmalloc(sizeof(struct async_req), GFP_ATOMIC); | |
205 | if (req == NULL) | |
206 | return res; | |
207 | async_urb = usb_alloc_urb(0, GFP_ATOMIC); | |
208 | if (async_urb == NULL) { | |
209 | kfree(req); | |
210 | return res; | |
211 | } | |
212 | req->rx_creg = cpu_to_le16(reg); | |
213 | req->dr.bRequestType = RTL8150_REQT_WRITE; | |
214 | req->dr.bRequest = RTL8150_REQ_SET_REGS; | |
215 | req->dr.wIndex = 0; | |
216 | req->dr.wValue = cpu_to_le16(indx); | |
217 | req->dr.wLength = cpu_to_le16(size); | |
218 | usb_fill_control_urb(async_urb, dev->udev, | |
219 | usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, | |
220 | &req->rx_creg, size, async_set_reg_cb, req); | |
221 | res = usb_submit_urb(async_urb, GFP_ATOMIC); | |
222 | if (res) { | |
223 | if (res == -ENODEV) | |
23219c13 | 224 | netif_device_detach(dev->netdev); |
4d12997a PM |
225 | dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); |
226 | } | |
227 | return res; | |
1da177e4 LT |
228 | } |
229 | ||
230 | static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) | |
231 | { | |
232 | int i; | |
233 | u8 data[3], tmp; | |
234 | ||
235 | data[0] = phy; | |
236 | data[1] = data[2] = 0; | |
237 | tmp = indx | PHY_READ | PHY_GO; | |
238 | i = 0; | |
239 | ||
240 | set_registers(dev, PHYADD, sizeof(data), data); | |
241 | set_registers(dev, PHYCNT, 1, &tmp); | |
242 | do { | |
243 | get_registers(dev, PHYCNT, 1, data); | |
244 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | |
245 | ||
c064efca | 246 | if (i <= MII_TIMEOUT) { |
1da177e4 LT |
247 | get_registers(dev, PHYDAT, 2, data); |
248 | *reg = data[0] | (data[1] << 8); | |
249 | return 0; | |
250 | } else | |
251 | return 1; | |
252 | } | |
253 | ||
254 | static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) | |
255 | { | |
256 | int i; | |
257 | u8 data[3], tmp; | |
258 | ||
259 | data[0] = phy; | |
886ae1fa AV |
260 | data[1] = reg & 0xff; |
261 | data[2] = (reg >> 8) & 0xff; | |
1da177e4 LT |
262 | tmp = indx | PHY_WRITE | PHY_GO; |
263 | i = 0; | |
264 | ||
265 | set_registers(dev, PHYADD, sizeof(data), data); | |
266 | set_registers(dev, PHYCNT, 1, &tmp); | |
267 | do { | |
268 | get_registers(dev, PHYCNT, 1, data); | |
269 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | |
270 | ||
c064efca | 271 | if (i <= MII_TIMEOUT) |
1da177e4 LT |
272 | return 0; |
273 | else | |
274 | return 1; | |
275 | } | |
276 | ||
277 | static inline void set_ethernet_addr(rtl8150_t * dev) | |
278 | { | |
279 | u8 node_id[6]; | |
280 | ||
281 | get_registers(dev, IDR, sizeof(node_id), node_id); | |
282 | memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id)); | |
283 | } | |
284 | ||
285 | static int rtl8150_set_mac_address(struct net_device *netdev, void *p) | |
286 | { | |
287 | struct sockaddr *addr = p; | |
288 | rtl8150_t *dev = netdev_priv(netdev); | |
1da177e4 LT |
289 | |
290 | if (netif_running(netdev)) | |
291 | return -EBUSY; | |
292 | ||
293 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
49ae25b0 | 294 | netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr); |
1da177e4 | 295 | /* Set the IDR registers. */ |
6057912d | 296 | set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); |
1da177e4 LT |
297 | #ifdef EEPROM_WRITE |
298 | { | |
d649a284 | 299 | int i; |
1da177e4 LT |
300 | u8 cr; |
301 | /* Get the CR contents. */ | |
302 | get_registers(dev, CR, 1, &cr); | |
303 | /* Set the WEPROM bit (eeprom write enable). */ | |
304 | cr |= 0x20; | |
305 | set_registers(dev, CR, 1, &cr); | |
306 | /* Write the MAC address into eeprom. Eeprom writes must be word-sized, | |
307 | so we need to split them up. */ | |
308 | for (i = 0; i * 2 < netdev->addr_len; i++) { | |
141b9e66 | 309 | set_registers(dev, IDR_EEPROM + (i * 2), 2, |
1da177e4 LT |
310 | netdev->dev_addr + (i * 2)); |
311 | } | |
312 | /* Clear the WEPROM bit (preventing accidental eeprom writes). */ | |
313 | cr &= 0xdf; | |
314 | set_registers(dev, CR, 1, &cr); | |
315 | } | |
316 | #endif | |
317 | return 0; | |
318 | } | |
319 | ||
320 | static int rtl8150_reset(rtl8150_t * dev) | |
321 | { | |
322 | u8 data = 0x10; | |
323 | int i = HZ; | |
324 | ||
325 | set_registers(dev, CR, 1, &data); | |
326 | do { | |
327 | get_registers(dev, CR, 1, &data); | |
328 | } while ((data & 0x10) && --i); | |
329 | ||
330 | return (i > 0) ? 1 : 0; | |
331 | } | |
332 | ||
333 | static int alloc_all_urbs(rtl8150_t * dev) | |
334 | { | |
335 | dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
336 | if (!dev->rx_urb) | |
337 | return 0; | |
338 | dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
339 | if (!dev->tx_urb) { | |
340 | usb_free_urb(dev->rx_urb); | |
341 | return 0; | |
342 | } | |
343 | dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
344 | if (!dev->intr_urb) { | |
345 | usb_free_urb(dev->rx_urb); | |
346 | usb_free_urb(dev->tx_urb); | |
347 | return 0; | |
348 | } | |
1da177e4 LT |
349 | |
350 | return 1; | |
351 | } | |
352 | ||
353 | static void free_all_urbs(rtl8150_t * dev) | |
354 | { | |
355 | usb_free_urb(dev->rx_urb); | |
356 | usb_free_urb(dev->tx_urb); | |
357 | usb_free_urb(dev->intr_urb); | |
1da177e4 LT |
358 | } |
359 | ||
360 | static void unlink_all_urbs(rtl8150_t * dev) | |
361 | { | |
362 | usb_kill_urb(dev->rx_urb); | |
363 | usb_kill_urb(dev->tx_urb); | |
364 | usb_kill_urb(dev->intr_urb); | |
1da177e4 LT |
365 | } |
366 | ||
367 | static inline struct sk_buff *pull_skb(rtl8150_t *dev) | |
368 | { | |
369 | struct sk_buff *skb; | |
370 | int i; | |
371 | ||
372 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | |
373 | if (dev->rx_skb_pool[i]) { | |
374 | skb = dev->rx_skb_pool[i]; | |
375 | dev->rx_skb_pool[i] = NULL; | |
376 | return skb; | |
377 | } | |
378 | } | |
379 | return NULL; | |
380 | } | |
381 | ||
7d12e780 | 382 | static void read_bulk_callback(struct urb *urb) |
1da177e4 LT |
383 | { |
384 | rtl8150_t *dev; | |
385 | unsigned pkt_len, res; | |
386 | struct sk_buff *skb; | |
387 | struct net_device *netdev; | |
c94cb314 ON |
388 | int status = urb->status; |
389 | int result; | |
feae641d | 390 | unsigned long flags; |
1da177e4 LT |
391 | |
392 | dev = urb->context; | |
393 | if (!dev) | |
394 | return; | |
395 | if (test_bit(RTL8150_UNPLUG, &dev->flags)) | |
396 | return; | |
397 | netdev = dev->netdev; | |
398 | if (!netif_device_present(netdev)) | |
399 | return; | |
400 | ||
c94cb314 | 401 | switch (status) { |
1da177e4 LT |
402 | case 0: |
403 | break; | |
404 | case -ENOENT: | |
405 | return; /* the urb is in unlink state */ | |
38e2bfc9 | 406 | case -ETIME: |
342a437e AGR |
407 | if (printk_ratelimit()) |
408 | dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); | |
1da177e4 LT |
409 | goto goon; |
410 | default: | |
342a437e AGR |
411 | if (printk_ratelimit()) |
412 | dev_warn(&urb->dev->dev, "Rx status %d\n", status); | |
1da177e4 LT |
413 | goto goon; |
414 | } | |
415 | ||
416 | if (!dev->rx_skb) | |
417 | goto resched; | |
418 | /* protect against short packets (tell me why we got some?!?) */ | |
419 | if (urb->actual_length < 4) | |
420 | goto goon; | |
421 | ||
422 | res = urb->actual_length; | |
1da177e4 LT |
423 | pkt_len = res - 4; |
424 | ||
425 | skb_put(dev->rx_skb, pkt_len); | |
426 | dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); | |
427 | netif_rx(dev->rx_skb); | |
b7e41e23 SH |
428 | netdev->stats.rx_packets++; |
429 | netdev->stats.rx_bytes += pkt_len; | |
1da177e4 | 430 | |
feae641d | 431 | spin_lock_irqsave(&dev->rx_pool_lock, flags); |
1da177e4 | 432 | skb = pull_skb(dev); |
feae641d | 433 | spin_unlock_irqrestore(&dev->rx_pool_lock, flags); |
1da177e4 LT |
434 | if (!skb) |
435 | goto resched; | |
436 | ||
437 | dev->rx_skb = skb; | |
438 | goon: | |
439 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | |
440 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
c94cb314 ON |
441 | result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); |
442 | if (result == -ENODEV) | |
23219c13 | 443 | netif_device_detach(dev->netdev); |
c94cb314 | 444 | else if (result) { |
1da177e4 LT |
445 | set_bit(RX_URB_FAIL, &dev->flags); |
446 | goto resched; | |
447 | } else { | |
448 | clear_bit(RX_URB_FAIL, &dev->flags); | |
449 | } | |
450 | ||
451 | return; | |
452 | resched: | |
453 | tasklet_schedule(&dev->tl); | |
454 | } | |
455 | ||
7d12e780 | 456 | static void write_bulk_callback(struct urb *urb) |
1da177e4 LT |
457 | { |
458 | rtl8150_t *dev; | |
c94cb314 | 459 | int status = urb->status; |
1da177e4 LT |
460 | |
461 | dev = urb->context; | |
462 | if (!dev) | |
463 | return; | |
464 | dev_kfree_skb_irq(dev->tx_skb); | |
465 | if (!netif_device_present(dev->netdev)) | |
466 | return; | |
c94cb314 | 467 | if (status) |
880c9c66 | 468 | dev_info(&urb->dev->dev, "%s: Tx status %d\n", |
c94cb314 | 469 | dev->netdev->name, status); |
860e9538 | 470 | netif_trans_update(dev->netdev); |
1da177e4 LT |
471 | netif_wake_queue(dev->netdev); |
472 | } | |
473 | ||
7d12e780 | 474 | static void intr_callback(struct urb *urb) |
1da177e4 LT |
475 | { |
476 | rtl8150_t *dev; | |
477 | __u8 *d; | |
c94cb314 ON |
478 | int status = urb->status; |
479 | int res; | |
1da177e4 LT |
480 | |
481 | dev = urb->context; | |
482 | if (!dev) | |
483 | return; | |
c94cb314 | 484 | switch (status) { |
1da177e4 LT |
485 | case 0: /* success */ |
486 | break; | |
487 | case -ECONNRESET: /* unlink */ | |
488 | case -ENOENT: | |
489 | case -ESHUTDOWN: | |
490 | return; | |
491 | /* -EPIPE: should clear the halt */ | |
492 | default: | |
880c9c66 | 493 | dev_info(&urb->dev->dev, "%s: intr status %d\n", |
c94cb314 | 494 | dev->netdev->name, status); |
1da177e4 LT |
495 | goto resubmit; |
496 | } | |
497 | ||
498 | d = urb->transfer_buffer; | |
499 | if (d[0] & TSR_ERRORS) { | |
b7e41e23 | 500 | dev->netdev->stats.tx_errors++; |
1da177e4 | 501 | if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) |
b7e41e23 | 502 | dev->netdev->stats.tx_aborted_errors++; |
1da177e4 | 503 | if (d[INT_TSR] & TSR_LCOL) |
b7e41e23 | 504 | dev->netdev->stats.tx_window_errors++; |
1da177e4 | 505 | if (d[INT_TSR] & TSR_LOSS_CRS) |
b7e41e23 | 506 | dev->netdev->stats.tx_carrier_errors++; |
1da177e4 LT |
507 | } |
508 | /* Report link status changes to the network stack */ | |
509 | if ((d[INT_MSR] & MSR_LINK) == 0) { | |
510 | if (netif_carrier_ok(dev->netdev)) { | |
511 | netif_carrier_off(dev->netdev); | |
49ae25b0 | 512 | netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); |
1da177e4 LT |
513 | } |
514 | } else { | |
515 | if (!netif_carrier_ok(dev->netdev)) { | |
516 | netif_carrier_on(dev->netdev); | |
49ae25b0 | 517 | netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); |
1da177e4 LT |
518 | } |
519 | } | |
520 | ||
521 | resubmit: | |
c94cb314 ON |
522 | res = usb_submit_urb (urb, GFP_ATOMIC); |
523 | if (res == -ENODEV) | |
23219c13 | 524 | netif_device_detach(dev->netdev); |
c94cb314 | 525 | else if (res) |
21f52432 GKH |
526 | dev_err(&dev->udev->dev, |
527 | "can't resubmit intr, %s-%s/input0, status %d\n", | |
528 | dev->udev->bus->bus_name, dev->udev->devpath, res); | |
1da177e4 LT |
529 | } |
530 | ||
23219c13 PC |
531 | static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) |
532 | { | |
533 | rtl8150_t *dev = usb_get_intfdata(intf); | |
534 | ||
535 | netif_device_detach(dev->netdev); | |
536 | ||
537 | if (netif_running(dev->netdev)) { | |
538 | usb_kill_urb(dev->rx_urb); | |
539 | usb_kill_urb(dev->intr_urb); | |
540 | } | |
541 | return 0; | |
542 | } | |
543 | ||
544 | static int rtl8150_resume(struct usb_interface *intf) | |
545 | { | |
546 | rtl8150_t *dev = usb_get_intfdata(intf); | |
547 | ||
548 | netif_device_attach(dev->netdev); | |
549 | if (netif_running(dev->netdev)) { | |
550 | dev->rx_urb->status = 0; | |
551 | dev->rx_urb->actual_length = 0; | |
7d12e780 | 552 | read_bulk_callback(dev->rx_urb); |
23219c13 PC |
553 | |
554 | dev->intr_urb->status = 0; | |
555 | dev->intr_urb->actual_length = 0; | |
7d12e780 | 556 | intr_callback(dev->intr_urb); |
23219c13 PC |
557 | } |
558 | return 0; | |
559 | } | |
1da177e4 LT |
560 | |
561 | /* | |
562 | ** | |
563 | ** network related part of the code | |
564 | ** | |
565 | */ | |
566 | ||
567 | static void fill_skb_pool(rtl8150_t *dev) | |
568 | { | |
569 | struct sk_buff *skb; | |
570 | int i; | |
571 | ||
572 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | |
573 | if (dev->rx_skb_pool[i]) | |
574 | continue; | |
575 | skb = dev_alloc_skb(RTL8150_MTU + 2); | |
576 | if (!skb) { | |
577 | return; | |
578 | } | |
1da177e4 LT |
579 | skb_reserve(skb, 2); |
580 | dev->rx_skb_pool[i] = skb; | |
581 | } | |
582 | } | |
583 | ||
584 | static void free_skb_pool(rtl8150_t *dev) | |
585 | { | |
586 | int i; | |
587 | ||
588 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) | |
589 | if (dev->rx_skb_pool[i]) | |
590 | dev_kfree_skb(dev->rx_skb_pool[i]); | |
591 | } | |
592 | ||
141b9e66 | 593 | static void rx_fixup(unsigned long data) |
594 | { | |
595 | struct rtl8150 *dev = (struct rtl8150 *)data; | |
596 | struct sk_buff *skb; | |
597 | int status; | |
598 | ||
599 | spin_lock_irq(&dev->rx_pool_lock); | |
600 | fill_skb_pool(dev); | |
601 | spin_unlock_irq(&dev->rx_pool_lock); | |
602 | if (test_bit(RX_URB_FAIL, &dev->flags)) | |
603 | if (dev->rx_skb) | |
604 | goto try_again; | |
605 | spin_lock_irq(&dev->rx_pool_lock); | |
606 | skb = pull_skb(dev); | |
607 | spin_unlock_irq(&dev->rx_pool_lock); | |
608 | if (skb == NULL) | |
609 | goto tlsched; | |
610 | dev->rx_skb = skb; | |
611 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | |
612 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
613 | try_again: | |
614 | status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); | |
615 | if (status == -ENODEV) { | |
616 | netif_device_detach(dev->netdev); | |
617 | } else if (status) { | |
618 | set_bit(RX_URB_FAIL, &dev->flags); | |
619 | goto tlsched; | |
620 | } else { | |
621 | clear_bit(RX_URB_FAIL, &dev->flags); | |
622 | } | |
623 | ||
624 | return; | |
625 | tlsched: | |
626 | tasklet_schedule(&dev->tl); | |
627 | } | |
628 | ||
1da177e4 LT |
629 | static int enable_net_traffic(rtl8150_t * dev) |
630 | { | |
631 | u8 cr, tcr, rcr, msr; | |
632 | ||
633 | if (!rtl8150_reset(dev)) { | |
4dc89948 | 634 | dev_warn(&dev->udev->dev, "device reset failed\n"); |
1da177e4 LT |
635 | } |
636 | /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ | |
637 | rcr = 0x9e; | |
1da177e4 LT |
638 | tcr = 0xd8; |
639 | cr = 0x0c; | |
640 | if (!(rcr & 0x80)) | |
641 | set_bit(RTL8150_HW_CRC, &dev->flags); | |
642 | set_registers(dev, RCR, 1, &rcr); | |
643 | set_registers(dev, TCR, 1, &tcr); | |
644 | set_registers(dev, CR, 1, &cr); | |
645 | get_registers(dev, MSR, 1, &msr); | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
650 | static void disable_net_traffic(rtl8150_t * dev) | |
651 | { | |
652 | u8 cr; | |
653 | ||
654 | get_registers(dev, CR, 1, &cr); | |
655 | cr &= 0xf3; | |
656 | set_registers(dev, CR, 1, &cr); | |
657 | } | |
658 | ||
1da177e4 LT |
659 | static void rtl8150_tx_timeout(struct net_device *netdev) |
660 | { | |
661 | rtl8150_t *dev = netdev_priv(netdev); | |
4dc89948 | 662 | dev_warn(&netdev->dev, "Tx timeout.\n"); |
1da177e4 | 663 | usb_unlink_urb(dev->tx_urb); |
b7e41e23 | 664 | netdev->stats.tx_errors++; |
1da177e4 LT |
665 | } |
666 | ||
667 | static void rtl8150_set_multicast(struct net_device *netdev) | |
668 | { | |
669 | rtl8150_t *dev = netdev_priv(netdev); | |
4d12997a PM |
670 | u16 rx_creg = 0x9e; |
671 | ||
1da177e4 LT |
672 | netif_stop_queue(netdev); |
673 | if (netdev->flags & IFF_PROMISC) { | |
4d12997a | 674 | rx_creg |= 0x0001; |
880c9c66 | 675 | dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); |
4cd24eaf | 676 | } else if (!netdev_mc_empty(netdev) || |
1da177e4 | 677 | (netdev->flags & IFF_ALLMULTI)) { |
4d12997a PM |
678 | rx_creg &= 0xfffe; |
679 | rx_creg |= 0x0002; | |
3a9b0455 | 680 | dev_dbg(&netdev->dev, "%s: allmulti set\n", netdev->name); |
1da177e4 LT |
681 | } else { |
682 | /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ | |
4d12997a | 683 | rx_creg &= 0x00fc; |
1da177e4 | 684 | } |
4d12997a | 685 | async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); |
1da177e4 LT |
686 | netif_wake_queue(netdev); |
687 | } | |
688 | ||
25a79c41 SH |
689 | static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, |
690 | struct net_device *netdev) | |
1da177e4 LT |
691 | { |
692 | rtl8150_t *dev = netdev_priv(netdev); | |
693 | int count, res; | |
694 | ||
695 | netif_stop_queue(netdev); | |
696 | count = (skb->len < 60) ? 60 : skb->len; | |
697 | count = (count & 0x3f) ? count : count + 1; | |
698 | dev->tx_skb = skb; | |
699 | usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), | |
700 | skb->data, count, write_bulk_callback, dev); | |
701 | if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { | |
23219c13 PC |
702 | /* Can we get/handle EPIPE here? */ |
703 | if (res == -ENODEV) | |
704 | netif_device_detach(dev->netdev); | |
705 | else { | |
4dc89948 | 706 | dev_warn(&netdev->dev, "failed tx_urb %d\n", res); |
b7e41e23 | 707 | netdev->stats.tx_errors++; |
23219c13 PC |
708 | netif_start_queue(netdev); |
709 | } | |
1da177e4 | 710 | } else { |
b7e41e23 SH |
711 | netdev->stats.tx_packets++; |
712 | netdev->stats.tx_bytes += skb->len; | |
860e9538 | 713 | netif_trans_update(netdev); |
1da177e4 LT |
714 | } |
715 | ||
6ed10654 | 716 | return NETDEV_TX_OK; |
1da177e4 LT |
717 | } |
718 | ||
719 | ||
720 | static void set_carrier(struct net_device *netdev) | |
721 | { | |
722 | rtl8150_t *dev = netdev_priv(netdev); | |
723 | short tmp; | |
724 | ||
725 | get_registers(dev, CSCR, 2, &tmp); | |
726 | if (tmp & CSCR_LINK_STATUS) | |
727 | netif_carrier_on(netdev); | |
728 | else | |
729 | netif_carrier_off(netdev); | |
730 | } | |
731 | ||
732 | static int rtl8150_open(struct net_device *netdev) | |
733 | { | |
734 | rtl8150_t *dev = netdev_priv(netdev); | |
735 | int res; | |
736 | ||
737 | if (dev->rx_skb == NULL) | |
738 | dev->rx_skb = pull_skb(dev); | |
739 | if (!dev->rx_skb) | |
740 | return -ENOMEM; | |
741 | ||
742 | set_registers(dev, IDR, 6, netdev->dev_addr); | |
141b9e66 | 743 | |
1da177e4 LT |
744 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), |
745 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
23219c13 PC |
746 | if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { |
747 | if (res == -ENODEV) | |
748 | netif_device_detach(dev->netdev); | |
4dc89948 | 749 | dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); |
23219c13 PC |
750 | return res; |
751 | } | |
1da177e4 LT |
752 | usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), |
753 | dev->intr_buff, INTBUFSIZE, intr_callback, | |
754 | dev, dev->intr_interval); | |
23219c13 PC |
755 | if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { |
756 | if (res == -ENODEV) | |
757 | netif_device_detach(dev->netdev); | |
4dc89948 | 758 | dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); |
23219c13 PC |
759 | usb_kill_urb(dev->rx_urb); |
760 | return res; | |
761 | } | |
1da177e4 LT |
762 | enable_net_traffic(dev); |
763 | set_carrier(netdev); | |
23219c13 | 764 | netif_start_queue(netdev); |
1da177e4 LT |
765 | |
766 | return res; | |
767 | } | |
768 | ||
769 | static int rtl8150_close(struct net_device *netdev) | |
770 | { | |
771 | rtl8150_t *dev = netdev_priv(netdev); | |
1da177e4 LT |
772 | |
773 | netif_stop_queue(netdev); | |
774 | if (!test_bit(RTL8150_UNPLUG, &dev->flags)) | |
775 | disable_net_traffic(dev); | |
776 | unlink_all_urbs(dev); | |
777 | ||
1abe7cd9 | 778 | return 0; |
1da177e4 LT |
779 | } |
780 | ||
781 | static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
782 | { | |
783 | rtl8150_t *dev = netdev_priv(netdev); | |
784 | ||
7826d43f JP |
785 | strlcpy(info->driver, driver_name, sizeof(info->driver)); |
786 | strlcpy(info->version, DRIVER_VERSION, sizeof(info->version)); | |
787 | usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); | |
1da177e4 LT |
788 | } |
789 | ||
b66239b6 PR |
790 | static int rtl8150_get_link_ksettings(struct net_device *netdev, |
791 | struct ethtool_link_ksettings *ecmd) | |
1da177e4 LT |
792 | { |
793 | rtl8150_t *dev = netdev_priv(netdev); | |
794 | short lpa, bmcr; | |
b66239b6 | 795 | u32 supported; |
1da177e4 | 796 | |
b66239b6 | 797 | supported = (SUPPORTED_10baseT_Half | |
1da177e4 LT |
798 | SUPPORTED_10baseT_Full | |
799 | SUPPORTED_100baseT_Half | | |
800 | SUPPORTED_100baseT_Full | | |
801 | SUPPORTED_Autoneg | | |
802 | SUPPORTED_TP | SUPPORTED_MII); | |
b66239b6 PR |
803 | ecmd->base.port = PORT_TP; |
804 | ecmd->base.phy_address = dev->phy; | |
1da177e4 LT |
805 | get_registers(dev, BMCR, 2, &bmcr); |
806 | get_registers(dev, ANLP, 2, &lpa); | |
807 | if (bmcr & BMCR_ANENABLE) { | |
70739497 DD |
808 | u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? |
809 | SPEED_100 : SPEED_10); | |
b66239b6 PR |
810 | ecmd->base.speed = speed; |
811 | ecmd->base.autoneg = AUTONEG_ENABLE; | |
70739497 | 812 | if (speed == SPEED_100) |
b66239b6 | 813 | ecmd->base.duplex = (lpa & LPA_100FULL) ? |
1da177e4 LT |
814 | DUPLEX_FULL : DUPLEX_HALF; |
815 | else | |
b66239b6 | 816 | ecmd->base.duplex = (lpa & LPA_10FULL) ? |
1da177e4 LT |
817 | DUPLEX_FULL : DUPLEX_HALF; |
818 | } else { | |
b66239b6 PR |
819 | ecmd->base.autoneg = AUTONEG_DISABLE; |
820 | ecmd->base.speed = ((bmcr & BMCR_SPEED100) ? | |
821 | SPEED_100 : SPEED_10); | |
822 | ecmd->base.duplex = (bmcr & BMCR_FULLDPLX) ? | |
1da177e4 LT |
823 | DUPLEX_FULL : DUPLEX_HALF; |
824 | } | |
b66239b6 PR |
825 | |
826 | ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported, | |
827 | supported); | |
828 | ||
1da177e4 LT |
829 | return 0; |
830 | } | |
831 | ||
0fc0b732 | 832 | static const struct ethtool_ops ops = { |
1da177e4 | 833 | .get_drvinfo = rtl8150_get_drvinfo, |
b66239b6 PR |
834 | .get_link = ethtool_op_get_link, |
835 | .get_link_ksettings = rtl8150_get_link_ksettings, | |
1da177e4 LT |
836 | }; |
837 | ||
838 | static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) | |
839 | { | |
840 | rtl8150_t *dev = netdev_priv(netdev); | |
841 | u16 *data = (u16 *) & rq->ifr_ifru; | |
842 | int res = 0; | |
843 | ||
844 | switch (cmd) { | |
845 | case SIOCDEVPRIVATE: | |
846 | data[0] = dev->phy; | |
0d156a37 | 847 | /* fall through */ |
1da177e4 LT |
848 | case SIOCDEVPRIVATE + 1: |
849 | read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); | |
850 | break; | |
851 | case SIOCDEVPRIVATE + 2: | |
852 | if (!capable(CAP_NET_ADMIN)) | |
853 | return -EPERM; | |
854 | write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); | |
855 | break; | |
856 | default: | |
857 | res = -EOPNOTSUPP; | |
858 | } | |
859 | ||
860 | return res; | |
861 | } | |
862 | ||
d79f7ef4 SH |
863 | static const struct net_device_ops rtl8150_netdev_ops = { |
864 | .ndo_open = rtl8150_open, | |
865 | .ndo_stop = rtl8150_close, | |
866 | .ndo_do_ioctl = rtl8150_ioctl, | |
867 | .ndo_start_xmit = rtl8150_start_xmit, | |
141b9e66 | 868 | .ndo_tx_timeout = rtl8150_tx_timeout, |
afc4b13d | 869 | .ndo_set_rx_mode = rtl8150_set_multicast, |
d79f7ef4 SH |
870 | .ndo_set_mac_address = rtl8150_set_mac_address, |
871 | ||
d79f7ef4 SH |
872 | .ndo_validate_addr = eth_validate_addr, |
873 | }; | |
874 | ||
1da177e4 LT |
875 | static int rtl8150_probe(struct usb_interface *intf, |
876 | const struct usb_device_id *id) | |
877 | { | |
878 | struct usb_device *udev = interface_to_usbdev(intf); | |
879 | rtl8150_t *dev; | |
880 | struct net_device *netdev; | |
881 | ||
882 | netdev = alloc_etherdev(sizeof(rtl8150_t)); | |
41de8d4c | 883 | if (!netdev) |
1da177e4 | 884 | return -ENOMEM; |
1da177e4 LT |
885 | |
886 | dev = netdev_priv(netdev); | |
1da177e4 LT |
887 | |
888 | dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); | |
889 | if (!dev->intr_buff) { | |
890 | free_netdev(netdev); | |
891 | return -ENOMEM; | |
892 | } | |
893 | ||
894 | tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev); | |
895 | spin_lock_init(&dev->rx_pool_lock); | |
141b9e66 | 896 | |
1da177e4 LT |
897 | dev->udev = udev; |
898 | dev->netdev = netdev; | |
d79f7ef4 | 899 | netdev->netdev_ops = &rtl8150_netdev_ops; |
1da177e4 | 900 | netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; |
7ad24ea4 | 901 | netdev->ethtool_ops = &ops; |
1da177e4 LT |
902 | dev->intr_interval = 100; /* 100ms */ |
903 | ||
904 | if (!alloc_all_urbs(dev)) { | |
21f52432 | 905 | dev_err(&intf->dev, "out of memory\n"); |
1da177e4 LT |
906 | goto out; |
907 | } | |
908 | if (!rtl8150_reset(dev)) { | |
21f52432 | 909 | dev_err(&intf->dev, "couldn't reset the device\n"); |
1da177e4 LT |
910 | goto out1; |
911 | } | |
912 | fill_skb_pool(dev); | |
913 | set_ethernet_addr(dev); | |
141b9e66 | 914 | |
1da177e4 LT |
915 | usb_set_intfdata(intf, dev); |
916 | SET_NETDEV_DEV(netdev, &intf->dev); | |
917 | if (register_netdev(netdev) != 0) { | |
21f52432 | 918 | dev_err(&intf->dev, "couldn't register the device\n"); |
1da177e4 LT |
919 | goto out2; |
920 | } | |
09abfa80 | 921 | |
880c9c66 | 922 | dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); |
09abfa80 | 923 | |
1da177e4 LT |
924 | return 0; |
925 | ||
926 | out2: | |
927 | usb_set_intfdata(intf, NULL); | |
928 | free_skb_pool(dev); | |
929 | out1: | |
930 | free_all_urbs(dev); | |
931 | out: | |
932 | kfree(dev->intr_buff); | |
933 | free_netdev(netdev); | |
934 | return -EIO; | |
935 | } | |
936 | ||
937 | static void rtl8150_disconnect(struct usb_interface *intf) | |
938 | { | |
939 | rtl8150_t *dev = usb_get_intfdata(intf); | |
940 | ||
941 | usb_set_intfdata(intf, NULL); | |
942 | if (dev) { | |
943 | set_bit(RTL8150_UNPLUG, &dev->flags); | |
eff674a5 | 944 | tasklet_kill(&dev->tl); |
1da177e4 LT |
945 | unregister_netdev(dev->netdev); |
946 | unlink_all_urbs(dev); | |
947 | free_all_urbs(dev); | |
948 | free_skb_pool(dev); | |
949 | if (dev->rx_skb) | |
950 | dev_kfree_skb(dev->rx_skb); | |
951 | kfree(dev->intr_buff); | |
952 | free_netdev(dev->netdev); | |
953 | } | |
954 | } | |
955 | ||
141b9e66 | 956 | static struct usb_driver rtl8150_driver = { |
957 | .name = driver_name, | |
958 | .probe = rtl8150_probe, | |
959 | .disconnect = rtl8150_disconnect, | |
960 | .id_table = rtl8150_table, | |
961 | .suspend = rtl8150_suspend, | |
e1f12eb6 SS |
962 | .resume = rtl8150_resume, |
963 | .disable_hub_initiated_lpm = 1, | |
141b9e66 | 964 | }; |
965 | ||
d632eb1b | 966 | module_usb_driver(rtl8150_driver); |
1da177e4 LT |
967 | |
968 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
969 | MODULE_DESCRIPTION(DRIVER_DESC); | |
970 | MODULE_LICENSE("GPL"); |