Commit | Line | Data |
---|---|---|
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 | { | |
b2a0f274 PM |
155 | return usb_control_msg_recv(dev->udev, 0, RTL8150_REQ_GET_REGS, |
156 | RTL8150_REQT_READ, indx, 0, data, size, | |
157 | 1000, GFP_NOIO); | |
1da177e4 LT |
158 | } |
159 | ||
7926aff5 | 160 | static int set_registers(rtl8150_t * dev, u16 indx, u16 size, const void *data) |
1da177e4 | 161 | { |
b2a0f274 PM |
162 | return usb_control_msg_send(dev->udev, 0, RTL8150_REQ_SET_REGS, |
163 | RTL8150_REQT_WRITE, indx, 0, data, size, | |
164 | 1000, GFP_NOIO); | |
1da177e4 LT |
165 | } |
166 | ||
4d12997a | 167 | static void async_set_reg_cb(struct urb *urb) |
1da177e4 | 168 | { |
4d12997a | 169 | struct async_req *req = (struct async_req *)urb->context; |
c94cb314 | 170 | int status = urb->status; |
1da177e4 | 171 | |
4d12997a PM |
172 | if (status < 0) |
173 | dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); | |
174 | kfree(req); | |
175 | usb_free_urb(urb); | |
1da177e4 LT |
176 | } |
177 | ||
4d12997a | 178 | static int async_set_registers(rtl8150_t *dev, u16 indx, u16 size, u16 reg) |
1da177e4 | 179 | { |
4d12997a PM |
180 | int res = -ENOMEM; |
181 | struct urb *async_urb; | |
182 | struct async_req *req; | |
183 | ||
184 | req = kmalloc(sizeof(struct async_req), GFP_ATOMIC); | |
185 | if (req == NULL) | |
186 | return res; | |
187 | async_urb = usb_alloc_urb(0, GFP_ATOMIC); | |
188 | if (async_urb == NULL) { | |
189 | kfree(req); | |
190 | return res; | |
191 | } | |
192 | req->rx_creg = cpu_to_le16(reg); | |
193 | req->dr.bRequestType = RTL8150_REQT_WRITE; | |
194 | req->dr.bRequest = RTL8150_REQ_SET_REGS; | |
195 | req->dr.wIndex = 0; | |
196 | req->dr.wValue = cpu_to_le16(indx); | |
197 | req->dr.wLength = cpu_to_le16(size); | |
198 | usb_fill_control_urb(async_urb, dev->udev, | |
199 | usb_sndctrlpipe(dev->udev, 0), (void *)&req->dr, | |
200 | &req->rx_creg, size, async_set_reg_cb, req); | |
201 | res = usb_submit_urb(async_urb, GFP_ATOMIC); | |
202 | if (res) { | |
203 | if (res == -ENODEV) | |
23219c13 | 204 | netif_device_detach(dev->netdev); |
4d12997a PM |
205 | dev_err(&dev->udev->dev, "%s failed with %d\n", __func__, res); |
206 | } | |
207 | return res; | |
1da177e4 LT |
208 | } |
209 | ||
210 | static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg) | |
211 | { | |
212 | int i; | |
213 | u8 data[3], tmp; | |
214 | ||
215 | data[0] = phy; | |
216 | data[1] = data[2] = 0; | |
217 | tmp = indx | PHY_READ | PHY_GO; | |
218 | i = 0; | |
219 | ||
220 | set_registers(dev, PHYADD, sizeof(data), data); | |
221 | set_registers(dev, PHYCNT, 1, &tmp); | |
222 | do { | |
223 | get_registers(dev, PHYCNT, 1, data); | |
224 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | |
225 | ||
c064efca | 226 | if (i <= MII_TIMEOUT) { |
1da177e4 LT |
227 | get_registers(dev, PHYDAT, 2, data); |
228 | *reg = data[0] | (data[1] << 8); | |
229 | return 0; | |
230 | } else | |
231 | return 1; | |
232 | } | |
233 | ||
234 | static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg) | |
235 | { | |
236 | int i; | |
237 | u8 data[3], tmp; | |
238 | ||
239 | data[0] = phy; | |
886ae1fa AV |
240 | data[1] = reg & 0xff; |
241 | data[2] = (reg >> 8) & 0xff; | |
1da177e4 LT |
242 | tmp = indx | PHY_WRITE | PHY_GO; |
243 | i = 0; | |
244 | ||
245 | set_registers(dev, PHYADD, sizeof(data), data); | |
246 | set_registers(dev, PHYCNT, 1, &tmp); | |
247 | do { | |
248 | get_registers(dev, PHYCNT, 1, data); | |
249 | } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT)); | |
250 | ||
c064efca | 251 | if (i <= MII_TIMEOUT) |
1da177e4 LT |
252 | return 0; |
253 | else | |
254 | return 1; | |
255 | } | |
256 | ||
f45a4248 | 257 | static void set_ethernet_addr(rtl8150_t *dev) |
1da177e4 | 258 | { |
f45a4248 AT |
259 | u8 node_id[ETH_ALEN]; |
260 | int ret; | |
261 | ||
262 | ret = get_registers(dev, IDR, sizeof(node_id), node_id); | |
1da177e4 | 263 | |
60f1626f | 264 | if (!ret) { |
af804e6d | 265 | eth_hw_addr_set(dev->netdev, node_id); |
f45a4248 AT |
266 | } else { |
267 | eth_hw_addr_random(dev->netdev); | |
268 | netdev_notice(dev->netdev, "Assigned a random MAC address: %pM\n", | |
269 | dev->netdev->dev_addr); | |
270 | } | |
1da177e4 LT |
271 | } |
272 | ||
273 | static int rtl8150_set_mac_address(struct net_device *netdev, void *p) | |
274 | { | |
275 | struct sockaddr *addr = p; | |
276 | rtl8150_t *dev = netdev_priv(netdev); | |
1da177e4 LT |
277 | |
278 | if (netif_running(netdev)) | |
279 | return -EBUSY; | |
280 | ||
49ed8dde | 281 | eth_hw_addr_set(netdev, addr->sa_data); |
49ae25b0 | 282 | netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr); |
1da177e4 | 283 | /* Set the IDR registers. */ |
6057912d | 284 | set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr); |
1da177e4 LT |
285 | #ifdef EEPROM_WRITE |
286 | { | |
d649a284 | 287 | int i; |
1da177e4 LT |
288 | u8 cr; |
289 | /* Get the CR contents. */ | |
290 | get_registers(dev, CR, 1, &cr); | |
291 | /* Set the WEPROM bit (eeprom write enable). */ | |
292 | cr |= 0x20; | |
293 | set_registers(dev, CR, 1, &cr); | |
294 | /* Write the MAC address into eeprom. Eeprom writes must be word-sized, | |
295 | so we need to split them up. */ | |
296 | for (i = 0; i * 2 < netdev->addr_len; i++) { | |
141b9e66 | 297 | set_registers(dev, IDR_EEPROM + (i * 2), 2, |
1da177e4 LT |
298 | netdev->dev_addr + (i * 2)); |
299 | } | |
300 | /* Clear the WEPROM bit (preventing accidental eeprom writes). */ | |
301 | cr &= 0xdf; | |
302 | set_registers(dev, CR, 1, &cr); | |
303 | } | |
304 | #endif | |
305 | return 0; | |
306 | } | |
307 | ||
308 | static int rtl8150_reset(rtl8150_t * dev) | |
309 | { | |
310 | u8 data = 0x10; | |
311 | int i = HZ; | |
312 | ||
313 | set_registers(dev, CR, 1, &data); | |
314 | do { | |
315 | get_registers(dev, CR, 1, &data); | |
316 | } while ((data & 0x10) && --i); | |
317 | ||
318 | return (i > 0) ? 1 : 0; | |
319 | } | |
320 | ||
321 | static int alloc_all_urbs(rtl8150_t * dev) | |
322 | { | |
323 | dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
324 | if (!dev->rx_urb) | |
325 | return 0; | |
326 | dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
327 | if (!dev->tx_urb) { | |
328 | usb_free_urb(dev->rx_urb); | |
329 | return 0; | |
330 | } | |
331 | dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL); | |
332 | if (!dev->intr_urb) { | |
333 | usb_free_urb(dev->rx_urb); | |
334 | usb_free_urb(dev->tx_urb); | |
335 | return 0; | |
336 | } | |
1da177e4 LT |
337 | |
338 | return 1; | |
339 | } | |
340 | ||
341 | static void free_all_urbs(rtl8150_t * dev) | |
342 | { | |
343 | usb_free_urb(dev->rx_urb); | |
344 | usb_free_urb(dev->tx_urb); | |
345 | usb_free_urb(dev->intr_urb); | |
1da177e4 LT |
346 | } |
347 | ||
348 | static void unlink_all_urbs(rtl8150_t * dev) | |
349 | { | |
350 | usb_kill_urb(dev->rx_urb); | |
351 | usb_kill_urb(dev->tx_urb); | |
352 | usb_kill_urb(dev->intr_urb); | |
1da177e4 LT |
353 | } |
354 | ||
355 | static inline struct sk_buff *pull_skb(rtl8150_t *dev) | |
356 | { | |
357 | struct sk_buff *skb; | |
358 | int i; | |
359 | ||
360 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | |
361 | if (dev->rx_skb_pool[i]) { | |
362 | skb = dev->rx_skb_pool[i]; | |
363 | dev->rx_skb_pool[i] = NULL; | |
364 | return skb; | |
365 | } | |
366 | } | |
367 | return NULL; | |
368 | } | |
369 | ||
7d12e780 | 370 | static void read_bulk_callback(struct urb *urb) |
1da177e4 LT |
371 | { |
372 | rtl8150_t *dev; | |
373 | unsigned pkt_len, res; | |
374 | struct sk_buff *skb; | |
375 | struct net_device *netdev; | |
c94cb314 ON |
376 | int status = urb->status; |
377 | int result; | |
feae641d | 378 | unsigned long flags; |
1da177e4 LT |
379 | |
380 | dev = urb->context; | |
381 | if (!dev) | |
382 | return; | |
383 | if (test_bit(RTL8150_UNPLUG, &dev->flags)) | |
384 | return; | |
385 | netdev = dev->netdev; | |
386 | if (!netif_device_present(netdev)) | |
387 | return; | |
388 | ||
c94cb314 | 389 | switch (status) { |
1da177e4 LT |
390 | case 0: |
391 | break; | |
392 | case -ENOENT: | |
393 | return; /* the urb is in unlink state */ | |
38e2bfc9 | 394 | case -ETIME: |
342a437e AGR |
395 | if (printk_ratelimit()) |
396 | dev_warn(&urb->dev->dev, "may be reset is needed?..\n"); | |
1da177e4 LT |
397 | goto goon; |
398 | default: | |
342a437e AGR |
399 | if (printk_ratelimit()) |
400 | dev_warn(&urb->dev->dev, "Rx status %d\n", status); | |
1da177e4 LT |
401 | goto goon; |
402 | } | |
403 | ||
404 | if (!dev->rx_skb) | |
405 | goto resched; | |
406 | /* protect against short packets (tell me why we got some?!?) */ | |
407 | if (urb->actual_length < 4) | |
408 | goto goon; | |
409 | ||
410 | res = urb->actual_length; | |
1da177e4 LT |
411 | pkt_len = res - 4; |
412 | ||
413 | skb_put(dev->rx_skb, pkt_len); | |
414 | dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev); | |
415 | netif_rx(dev->rx_skb); | |
b7e41e23 SH |
416 | netdev->stats.rx_packets++; |
417 | netdev->stats.rx_bytes += pkt_len; | |
1da177e4 | 418 | |
feae641d | 419 | spin_lock_irqsave(&dev->rx_pool_lock, flags); |
1da177e4 | 420 | skb = pull_skb(dev); |
feae641d | 421 | spin_unlock_irqrestore(&dev->rx_pool_lock, flags); |
1da177e4 LT |
422 | if (!skb) |
423 | goto resched; | |
424 | ||
425 | dev->rx_skb = skb; | |
426 | goon: | |
427 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | |
428 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
c94cb314 ON |
429 | result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); |
430 | if (result == -ENODEV) | |
23219c13 | 431 | netif_device_detach(dev->netdev); |
c94cb314 | 432 | else if (result) { |
1da177e4 LT |
433 | set_bit(RX_URB_FAIL, &dev->flags); |
434 | goto resched; | |
435 | } else { | |
436 | clear_bit(RX_URB_FAIL, &dev->flags); | |
437 | } | |
438 | ||
439 | return; | |
440 | resched: | |
441 | tasklet_schedule(&dev->tl); | |
442 | } | |
443 | ||
7d12e780 | 444 | static void write_bulk_callback(struct urb *urb) |
1da177e4 LT |
445 | { |
446 | rtl8150_t *dev; | |
c94cb314 | 447 | int status = urb->status; |
1da177e4 LT |
448 | |
449 | dev = urb->context; | |
450 | if (!dev) | |
451 | return; | |
452 | dev_kfree_skb_irq(dev->tx_skb); | |
453 | if (!netif_device_present(dev->netdev)) | |
454 | return; | |
c94cb314 | 455 | if (status) |
880c9c66 | 456 | dev_info(&urb->dev->dev, "%s: Tx status %d\n", |
c94cb314 | 457 | dev->netdev->name, status); |
860e9538 | 458 | netif_trans_update(dev->netdev); |
1da177e4 LT |
459 | netif_wake_queue(dev->netdev); |
460 | } | |
461 | ||
7d12e780 | 462 | static void intr_callback(struct urb *urb) |
1da177e4 LT |
463 | { |
464 | rtl8150_t *dev; | |
465 | __u8 *d; | |
c94cb314 ON |
466 | int status = urb->status; |
467 | int res; | |
1da177e4 LT |
468 | |
469 | dev = urb->context; | |
470 | if (!dev) | |
471 | return; | |
c94cb314 | 472 | switch (status) { |
1da177e4 LT |
473 | case 0: /* success */ |
474 | break; | |
475 | case -ECONNRESET: /* unlink */ | |
476 | case -ENOENT: | |
477 | case -ESHUTDOWN: | |
478 | return; | |
479 | /* -EPIPE: should clear the halt */ | |
480 | default: | |
880c9c66 | 481 | dev_info(&urb->dev->dev, "%s: intr status %d\n", |
c94cb314 | 482 | dev->netdev->name, status); |
1da177e4 LT |
483 | goto resubmit; |
484 | } | |
485 | ||
486 | d = urb->transfer_buffer; | |
487 | if (d[0] & TSR_ERRORS) { | |
b7e41e23 | 488 | dev->netdev->stats.tx_errors++; |
1da177e4 | 489 | if (d[INT_TSR] & (TSR_ECOL | TSR_JBR)) |
b7e41e23 | 490 | dev->netdev->stats.tx_aborted_errors++; |
1da177e4 | 491 | if (d[INT_TSR] & TSR_LCOL) |
b7e41e23 | 492 | dev->netdev->stats.tx_window_errors++; |
1da177e4 | 493 | if (d[INT_TSR] & TSR_LOSS_CRS) |
b7e41e23 | 494 | dev->netdev->stats.tx_carrier_errors++; |
1da177e4 LT |
495 | } |
496 | /* Report link status changes to the network stack */ | |
497 | if ((d[INT_MSR] & MSR_LINK) == 0) { | |
498 | if (netif_carrier_ok(dev->netdev)) { | |
499 | netif_carrier_off(dev->netdev); | |
49ae25b0 | 500 | netdev_dbg(dev->netdev, "%s: LINK LOST\n", __func__); |
1da177e4 LT |
501 | } |
502 | } else { | |
503 | if (!netif_carrier_ok(dev->netdev)) { | |
504 | netif_carrier_on(dev->netdev); | |
49ae25b0 | 505 | netdev_dbg(dev->netdev, "%s: LINK CAME BACK\n", __func__); |
1da177e4 LT |
506 | } |
507 | } | |
508 | ||
509 | resubmit: | |
c94cb314 ON |
510 | res = usb_submit_urb (urb, GFP_ATOMIC); |
511 | if (res == -ENODEV) | |
23219c13 | 512 | netif_device_detach(dev->netdev); |
c94cb314 | 513 | else if (res) |
21f52432 GKH |
514 | dev_err(&dev->udev->dev, |
515 | "can't resubmit intr, %s-%s/input0, status %d\n", | |
516 | dev->udev->bus->bus_name, dev->udev->devpath, res); | |
1da177e4 LT |
517 | } |
518 | ||
23219c13 PC |
519 | static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message) |
520 | { | |
521 | rtl8150_t *dev = usb_get_intfdata(intf); | |
522 | ||
523 | netif_device_detach(dev->netdev); | |
524 | ||
525 | if (netif_running(dev->netdev)) { | |
526 | usb_kill_urb(dev->rx_urb); | |
527 | usb_kill_urb(dev->intr_urb); | |
528 | } | |
529 | return 0; | |
530 | } | |
531 | ||
532 | static int rtl8150_resume(struct usb_interface *intf) | |
533 | { | |
534 | rtl8150_t *dev = usb_get_intfdata(intf); | |
535 | ||
536 | netif_device_attach(dev->netdev); | |
537 | if (netif_running(dev->netdev)) { | |
538 | dev->rx_urb->status = 0; | |
539 | dev->rx_urb->actual_length = 0; | |
7d12e780 | 540 | read_bulk_callback(dev->rx_urb); |
23219c13 PC |
541 | |
542 | dev->intr_urb->status = 0; | |
543 | dev->intr_urb->actual_length = 0; | |
7d12e780 | 544 | intr_callback(dev->intr_urb); |
23219c13 PC |
545 | } |
546 | return 0; | |
547 | } | |
1da177e4 LT |
548 | |
549 | /* | |
550 | ** | |
551 | ** network related part of the code | |
552 | ** | |
553 | */ | |
554 | ||
555 | static void fill_skb_pool(rtl8150_t *dev) | |
556 | { | |
557 | struct sk_buff *skb; | |
558 | int i; | |
559 | ||
560 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) { | |
561 | if (dev->rx_skb_pool[i]) | |
562 | continue; | |
563 | skb = dev_alloc_skb(RTL8150_MTU + 2); | |
564 | if (!skb) { | |
565 | return; | |
566 | } | |
1da177e4 LT |
567 | skb_reserve(skb, 2); |
568 | dev->rx_skb_pool[i] = skb; | |
569 | } | |
570 | } | |
571 | ||
572 | static void free_skb_pool(rtl8150_t *dev) | |
573 | { | |
574 | int i; | |
575 | ||
576 | for (i = 0; i < RX_SKB_POOL_SIZE; i++) | |
5477fccf | 577 | dev_kfree_skb(dev->rx_skb_pool[i]); |
1da177e4 LT |
578 | } |
579 | ||
1999ad32 | 580 | static void rx_fixup(struct tasklet_struct *t) |
141b9e66 | 581 | { |
1999ad32 | 582 | struct rtl8150 *dev = from_tasklet(dev, t, tl); |
141b9e66 | 583 | struct sk_buff *skb; |
584 | int status; | |
585 | ||
586 | spin_lock_irq(&dev->rx_pool_lock); | |
587 | fill_skb_pool(dev); | |
588 | spin_unlock_irq(&dev->rx_pool_lock); | |
589 | if (test_bit(RX_URB_FAIL, &dev->flags)) | |
590 | if (dev->rx_skb) | |
591 | goto try_again; | |
592 | spin_lock_irq(&dev->rx_pool_lock); | |
593 | skb = pull_skb(dev); | |
594 | spin_unlock_irq(&dev->rx_pool_lock); | |
595 | if (skb == NULL) | |
596 | goto tlsched; | |
597 | dev->rx_skb = skb; | |
598 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), | |
599 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
600 | try_again: | |
601 | status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC); | |
602 | if (status == -ENODEV) { | |
603 | netif_device_detach(dev->netdev); | |
604 | } else if (status) { | |
605 | set_bit(RX_URB_FAIL, &dev->flags); | |
606 | goto tlsched; | |
607 | } else { | |
608 | clear_bit(RX_URB_FAIL, &dev->flags); | |
609 | } | |
610 | ||
611 | return; | |
612 | tlsched: | |
613 | tasklet_schedule(&dev->tl); | |
614 | } | |
615 | ||
1da177e4 LT |
616 | static int enable_net_traffic(rtl8150_t * dev) |
617 | { | |
618 | u8 cr, tcr, rcr, msr; | |
619 | ||
620 | if (!rtl8150_reset(dev)) { | |
4dc89948 | 621 | dev_warn(&dev->udev->dev, "device reset failed\n"); |
1da177e4 LT |
622 | } |
623 | /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */ | |
624 | rcr = 0x9e; | |
1da177e4 LT |
625 | tcr = 0xd8; |
626 | cr = 0x0c; | |
627 | if (!(rcr & 0x80)) | |
628 | set_bit(RTL8150_HW_CRC, &dev->flags); | |
629 | set_registers(dev, RCR, 1, &rcr); | |
630 | set_registers(dev, TCR, 1, &tcr); | |
631 | set_registers(dev, CR, 1, &cr); | |
632 | get_registers(dev, MSR, 1, &msr); | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | static void disable_net_traffic(rtl8150_t * dev) | |
638 | { | |
639 | u8 cr; | |
640 | ||
641 | get_registers(dev, CR, 1, &cr); | |
642 | cr &= 0xf3; | |
643 | set_registers(dev, CR, 1, &cr); | |
644 | } | |
645 | ||
0290bd29 | 646 | static void rtl8150_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
1da177e4 LT |
647 | { |
648 | rtl8150_t *dev = netdev_priv(netdev); | |
4dc89948 | 649 | dev_warn(&netdev->dev, "Tx timeout.\n"); |
1da177e4 | 650 | usb_unlink_urb(dev->tx_urb); |
b7e41e23 | 651 | netdev->stats.tx_errors++; |
1da177e4 LT |
652 | } |
653 | ||
654 | static void rtl8150_set_multicast(struct net_device *netdev) | |
655 | { | |
656 | rtl8150_t *dev = netdev_priv(netdev); | |
4d12997a PM |
657 | u16 rx_creg = 0x9e; |
658 | ||
1da177e4 LT |
659 | netif_stop_queue(netdev); |
660 | if (netdev->flags & IFF_PROMISC) { | |
4d12997a | 661 | rx_creg |= 0x0001; |
880c9c66 | 662 | dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name); |
4cd24eaf | 663 | } else if (!netdev_mc_empty(netdev) || |
1da177e4 | 664 | (netdev->flags & IFF_ALLMULTI)) { |
4d12997a PM |
665 | rx_creg &= 0xfffe; |
666 | rx_creg |= 0x0002; | |
3a9b0455 | 667 | dev_dbg(&netdev->dev, "%s: allmulti set\n", netdev->name); |
1da177e4 LT |
668 | } else { |
669 | /* ~RX_MULTICAST, ~RX_PROMISCUOUS */ | |
4d12997a | 670 | rx_creg &= 0x00fc; |
1da177e4 | 671 | } |
4d12997a | 672 | async_set_registers(dev, RCR, sizeof(rx_creg), rx_creg); |
1da177e4 LT |
673 | netif_wake_queue(netdev); |
674 | } | |
675 | ||
25a79c41 SH |
676 | static netdev_tx_t rtl8150_start_xmit(struct sk_buff *skb, |
677 | struct net_device *netdev) | |
1da177e4 LT |
678 | { |
679 | rtl8150_t *dev = netdev_priv(netdev); | |
680 | int count, res; | |
681 | ||
682 | netif_stop_queue(netdev); | |
683 | count = (skb->len < 60) ? 60 : skb->len; | |
684 | count = (count & 0x3f) ? count : count + 1; | |
685 | dev->tx_skb = skb; | |
686 | usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), | |
687 | skb->data, count, write_bulk_callback, dev); | |
688 | if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) { | |
23219c13 PC |
689 | /* Can we get/handle EPIPE here? */ |
690 | if (res == -ENODEV) | |
691 | netif_device_detach(dev->netdev); | |
692 | else { | |
4dc89948 | 693 | dev_warn(&netdev->dev, "failed tx_urb %d\n", res); |
b7e41e23 | 694 | netdev->stats.tx_errors++; |
23219c13 PC |
695 | netif_start_queue(netdev); |
696 | } | |
1da177e4 | 697 | } else { |
b7e41e23 SH |
698 | netdev->stats.tx_packets++; |
699 | netdev->stats.tx_bytes += skb->len; | |
860e9538 | 700 | netif_trans_update(netdev); |
1da177e4 LT |
701 | } |
702 | ||
6ed10654 | 703 | return NETDEV_TX_OK; |
1da177e4 LT |
704 | } |
705 | ||
706 | ||
707 | static void set_carrier(struct net_device *netdev) | |
708 | { | |
709 | rtl8150_t *dev = netdev_priv(netdev); | |
710 | short tmp; | |
711 | ||
712 | get_registers(dev, CSCR, 2, &tmp); | |
713 | if (tmp & CSCR_LINK_STATUS) | |
714 | netif_carrier_on(netdev); | |
715 | else | |
716 | netif_carrier_off(netdev); | |
717 | } | |
718 | ||
719 | static int rtl8150_open(struct net_device *netdev) | |
720 | { | |
721 | rtl8150_t *dev = netdev_priv(netdev); | |
722 | int res; | |
723 | ||
724 | if (dev->rx_skb == NULL) | |
725 | dev->rx_skb = pull_skb(dev); | |
726 | if (!dev->rx_skb) | |
727 | return -ENOMEM; | |
728 | ||
729 | set_registers(dev, IDR, 6, netdev->dev_addr); | |
141b9e66 | 730 | |
1da177e4 LT |
731 | usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1), |
732 | dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev); | |
23219c13 PC |
733 | if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) { |
734 | if (res == -ENODEV) | |
735 | netif_device_detach(dev->netdev); | |
4dc89948 | 736 | dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res); |
23219c13 PC |
737 | return res; |
738 | } | |
1da177e4 LT |
739 | usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3), |
740 | dev->intr_buff, INTBUFSIZE, intr_callback, | |
741 | dev, dev->intr_interval); | |
23219c13 PC |
742 | if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) { |
743 | if (res == -ENODEV) | |
744 | netif_device_detach(dev->netdev); | |
4dc89948 | 745 | dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res); |
23219c13 PC |
746 | usb_kill_urb(dev->rx_urb); |
747 | return res; | |
748 | } | |
1da177e4 LT |
749 | enable_net_traffic(dev); |
750 | set_carrier(netdev); | |
23219c13 | 751 | netif_start_queue(netdev); |
1da177e4 LT |
752 | |
753 | return res; | |
754 | } | |
755 | ||
756 | static int rtl8150_close(struct net_device *netdev) | |
757 | { | |
758 | rtl8150_t *dev = netdev_priv(netdev); | |
1da177e4 LT |
759 | |
760 | netif_stop_queue(netdev); | |
761 | if (!test_bit(RTL8150_UNPLUG, &dev->flags)) | |
762 | disable_net_traffic(dev); | |
763 | unlink_all_urbs(dev); | |
764 | ||
1abe7cd9 | 765 | return 0; |
1da177e4 LT |
766 | } |
767 | ||
768 | static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info) | |
769 | { | |
770 | rtl8150_t *dev = netdev_priv(netdev); | |
771 | ||
fb3ceec1 WS |
772 | strscpy(info->driver, driver_name, sizeof(info->driver)); |
773 | strscpy(info->version, DRIVER_VERSION, sizeof(info->version)); | |
7826d43f | 774 | usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); |
1da177e4 LT |
775 | } |
776 | ||
b66239b6 PR |
777 | static int rtl8150_get_link_ksettings(struct net_device *netdev, |
778 | struct ethtool_link_ksettings *ecmd) | |
1da177e4 LT |
779 | { |
780 | rtl8150_t *dev = netdev_priv(netdev); | |
fba38398 ON |
781 | short lpa = 0; |
782 | short bmcr = 0; | |
b66239b6 | 783 | u32 supported; |
1da177e4 | 784 | |
b66239b6 | 785 | supported = (SUPPORTED_10baseT_Half | |
1da177e4 LT |
786 | SUPPORTED_10baseT_Full | |
787 | SUPPORTED_100baseT_Half | | |
788 | SUPPORTED_100baseT_Full | | |
789 | SUPPORTED_Autoneg | | |
790 | SUPPORTED_TP | SUPPORTED_MII); | |
b66239b6 PR |
791 | ecmd->base.port = PORT_TP; |
792 | ecmd->base.phy_address = dev->phy; | |
1da177e4 LT |
793 | get_registers(dev, BMCR, 2, &bmcr); |
794 | get_registers(dev, ANLP, 2, &lpa); | |
795 | if (bmcr & BMCR_ANENABLE) { | |
70739497 DD |
796 | u32 speed = ((lpa & (LPA_100HALF | LPA_100FULL)) ? |
797 | SPEED_100 : SPEED_10); | |
b66239b6 PR |
798 | ecmd->base.speed = speed; |
799 | ecmd->base.autoneg = AUTONEG_ENABLE; | |
70739497 | 800 | if (speed == SPEED_100) |
b66239b6 | 801 | ecmd->base.duplex = (lpa & LPA_100FULL) ? |
1da177e4 LT |
802 | DUPLEX_FULL : DUPLEX_HALF; |
803 | else | |
b66239b6 | 804 | ecmd->base.duplex = (lpa & LPA_10FULL) ? |
1da177e4 LT |
805 | DUPLEX_FULL : DUPLEX_HALF; |
806 | } else { | |
b66239b6 PR |
807 | ecmd->base.autoneg = AUTONEG_DISABLE; |
808 | ecmd->base.speed = ((bmcr & BMCR_SPEED100) ? | |
809 | SPEED_100 : SPEED_10); | |
810 | ecmd->base.duplex = (bmcr & BMCR_FULLDPLX) ? | |
1da177e4 LT |
811 | DUPLEX_FULL : DUPLEX_HALF; |
812 | } | |
b66239b6 PR |
813 | |
814 | ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported, | |
815 | supported); | |
816 | ||
1da177e4 LT |
817 | return 0; |
818 | } | |
819 | ||
0fc0b732 | 820 | static const struct ethtool_ops ops = { |
1da177e4 | 821 | .get_drvinfo = rtl8150_get_drvinfo, |
b66239b6 PR |
822 | .get_link = ethtool_op_get_link, |
823 | .get_link_ksettings = rtl8150_get_link_ksettings, | |
1da177e4 LT |
824 | }; |
825 | ||
ef1b5b0c AB |
826 | static int rtl8150_siocdevprivate(struct net_device *netdev, struct ifreq *rq, |
827 | void __user *udata, int cmd) | |
1da177e4 LT |
828 | { |
829 | rtl8150_t *dev = netdev_priv(netdev); | |
830 | u16 *data = (u16 *) & rq->ifr_ifru; | |
831 | int res = 0; | |
832 | ||
833 | switch (cmd) { | |
834 | case SIOCDEVPRIVATE: | |
835 | data[0] = dev->phy; | |
df561f66 | 836 | fallthrough; |
1da177e4 LT |
837 | case SIOCDEVPRIVATE + 1: |
838 | read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]); | |
839 | break; | |
840 | case SIOCDEVPRIVATE + 2: | |
841 | if (!capable(CAP_NET_ADMIN)) | |
842 | return -EPERM; | |
843 | write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]); | |
844 | break; | |
845 | default: | |
846 | res = -EOPNOTSUPP; | |
847 | } | |
848 | ||
849 | return res; | |
850 | } | |
851 | ||
d79f7ef4 SH |
852 | static const struct net_device_ops rtl8150_netdev_ops = { |
853 | .ndo_open = rtl8150_open, | |
854 | .ndo_stop = rtl8150_close, | |
ef1b5b0c | 855 | .ndo_siocdevprivate = rtl8150_siocdevprivate, |
d79f7ef4 | 856 | .ndo_start_xmit = rtl8150_start_xmit, |
141b9e66 | 857 | .ndo_tx_timeout = rtl8150_tx_timeout, |
afc4b13d | 858 | .ndo_set_rx_mode = rtl8150_set_multicast, |
d79f7ef4 SH |
859 | .ndo_set_mac_address = rtl8150_set_mac_address, |
860 | ||
d79f7ef4 SH |
861 | .ndo_validate_addr = eth_validate_addr, |
862 | }; | |
863 | ||
1da177e4 LT |
864 | static int rtl8150_probe(struct usb_interface *intf, |
865 | const struct usb_device_id *id) | |
866 | { | |
867 | struct usb_device *udev = interface_to_usbdev(intf); | |
868 | rtl8150_t *dev; | |
869 | struct net_device *netdev; | |
870 | ||
871 | netdev = alloc_etherdev(sizeof(rtl8150_t)); | |
41de8d4c | 872 | if (!netdev) |
1da177e4 | 873 | return -ENOMEM; |
1da177e4 LT |
874 | |
875 | dev = netdev_priv(netdev); | |
1da177e4 LT |
876 | |
877 | dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); | |
878 | if (!dev->intr_buff) { | |
879 | free_netdev(netdev); | |
880 | return -ENOMEM; | |
881 | } | |
882 | ||
1999ad32 | 883 | tasklet_setup(&dev->tl, rx_fixup); |
1da177e4 | 884 | spin_lock_init(&dev->rx_pool_lock); |
141b9e66 | 885 | |
1da177e4 LT |
886 | dev->udev = udev; |
887 | dev->netdev = netdev; | |
d79f7ef4 | 888 | netdev->netdev_ops = &rtl8150_netdev_ops; |
1da177e4 | 889 | netdev->watchdog_timeo = RTL8150_TX_TIMEOUT; |
7ad24ea4 | 890 | netdev->ethtool_ops = &ops; |
1da177e4 LT |
891 | dev->intr_interval = 100; /* 100ms */ |
892 | ||
893 | if (!alloc_all_urbs(dev)) { | |
21f52432 | 894 | dev_err(&intf->dev, "out of memory\n"); |
1da177e4 LT |
895 | goto out; |
896 | } | |
897 | if (!rtl8150_reset(dev)) { | |
21f52432 | 898 | dev_err(&intf->dev, "couldn't reset the device\n"); |
1da177e4 LT |
899 | goto out1; |
900 | } | |
901 | fill_skb_pool(dev); | |
902 | set_ethernet_addr(dev); | |
141b9e66 | 903 | |
1da177e4 LT |
904 | usb_set_intfdata(intf, dev); |
905 | SET_NETDEV_DEV(netdev, &intf->dev); | |
906 | if (register_netdev(netdev) != 0) { | |
21f52432 | 907 | dev_err(&intf->dev, "couldn't register the device\n"); |
1da177e4 LT |
908 | goto out2; |
909 | } | |
09abfa80 | 910 | |
880c9c66 | 911 | dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name); |
09abfa80 | 912 | |
1da177e4 LT |
913 | return 0; |
914 | ||
915 | out2: | |
916 | usb_set_intfdata(intf, NULL); | |
917 | free_skb_pool(dev); | |
918 | out1: | |
919 | free_all_urbs(dev); | |
920 | out: | |
921 | kfree(dev->intr_buff); | |
922 | free_netdev(netdev); | |
923 | return -EIO; | |
924 | } | |
925 | ||
926 | static void rtl8150_disconnect(struct usb_interface *intf) | |
927 | { | |
928 | rtl8150_t *dev = usb_get_intfdata(intf); | |
929 | ||
930 | usb_set_intfdata(intf, NULL); | |
931 | if (dev) { | |
932 | set_bit(RTL8150_UNPLUG, &dev->flags); | |
eff674a5 | 933 | tasklet_kill(&dev->tl); |
1da177e4 LT |
934 | unregister_netdev(dev->netdev); |
935 | unlink_all_urbs(dev); | |
936 | free_all_urbs(dev); | |
937 | free_skb_pool(dev); | |
5477fccf | 938 | dev_kfree_skb(dev->rx_skb); |
1da177e4 LT |
939 | kfree(dev->intr_buff); |
940 | free_netdev(dev->netdev); | |
941 | } | |
942 | } | |
943 | ||
141b9e66 | 944 | static struct usb_driver rtl8150_driver = { |
945 | .name = driver_name, | |
946 | .probe = rtl8150_probe, | |
947 | .disconnect = rtl8150_disconnect, | |
948 | .id_table = rtl8150_table, | |
949 | .suspend = rtl8150_suspend, | |
e1f12eb6 SS |
950 | .resume = rtl8150_resume, |
951 | .disable_hub_initiated_lpm = 1, | |
141b9e66 | 952 | }; |
953 | ||
d632eb1b | 954 | module_usb_driver(rtl8150_driver); |
1da177e4 LT |
955 | |
956 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
957 | MODULE_DESCRIPTION(DRIVER_DESC); | |
958 | MODULE_LICENSE("GPL"); |