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55d7de9d WH |
1 | /* |
2 | * Copyright (C) 2015 Microchip Technology | |
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 | * as published by the Free Software Foundation; either version 2 | |
7 | * of the License, or (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | #include <linux/version.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/netdevice.h> | |
20 | #include <linux/etherdevice.h> | |
21 | #include <linux/ethtool.h> | |
55d7de9d WH |
22 | #include <linux/usb.h> |
23 | #include <linux/crc32.h> | |
24 | #include <linux/signal.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/if_vlan.h> | |
27 | #include <linux/uaccess.h> | |
28 | #include <linux/list.h> | |
29 | #include <linux/ip.h> | |
30 | #include <linux/ipv6.h> | |
31 | #include <linux/mdio.h> | |
32 | #include <net/ip6_checksum.h> | |
bdfba55e | 33 | #include <linux/microchipphy.h> |
55d7de9d WH |
34 | #include "lan78xx.h" |
35 | ||
36 | #define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>" | |
37 | #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" | |
38 | #define DRIVER_NAME "lan78xx" | |
e4953910 | 39 | #define DRIVER_VERSION "1.0.2" |
55d7de9d WH |
40 | |
41 | #define TX_TIMEOUT_JIFFIES (5 * HZ) | |
42 | #define THROTTLE_JIFFIES (HZ / 8) | |
43 | #define UNLINK_TIMEOUT_MS 3 | |
44 | ||
45 | #define RX_MAX_QUEUE_MEMORY (60 * 1518) | |
46 | ||
47 | #define SS_USB_PKT_SIZE (1024) | |
48 | #define HS_USB_PKT_SIZE (512) | |
49 | #define FS_USB_PKT_SIZE (64) | |
50 | ||
51 | #define MAX_RX_FIFO_SIZE (12 * 1024) | |
52 | #define MAX_TX_FIFO_SIZE (12 * 1024) | |
53 | #define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE) | |
54 | #define DEFAULT_BULK_IN_DELAY (0x0800) | |
55 | #define MAX_SINGLE_PACKET_SIZE (9000) | |
56 | #define DEFAULT_TX_CSUM_ENABLE (true) | |
57 | #define DEFAULT_RX_CSUM_ENABLE (true) | |
58 | #define DEFAULT_TSO_CSUM_ENABLE (true) | |
59 | #define DEFAULT_VLAN_FILTER_ENABLE (true) | |
55d7de9d WH |
60 | #define TX_OVERHEAD (8) |
61 | #define RXW_PADDING 2 | |
62 | ||
63 | #define LAN78XX_USB_VENDOR_ID (0x0424) | |
64 | #define LAN7800_USB_PRODUCT_ID (0x7800) | |
65 | #define LAN7850_USB_PRODUCT_ID (0x7850) | |
66 | #define LAN78XX_EEPROM_MAGIC (0x78A5) | |
67 | #define LAN78XX_OTP_MAGIC (0x78F3) | |
68 | ||
69 | #define MII_READ 1 | |
70 | #define MII_WRITE 0 | |
71 | ||
72 | #define EEPROM_INDICATOR (0xA5) | |
73 | #define EEPROM_MAC_OFFSET (0x01) | |
74 | #define MAX_EEPROM_SIZE 512 | |
75 | #define OTP_INDICATOR_1 (0xF3) | |
76 | #define OTP_INDICATOR_2 (0xF7) | |
77 | ||
78 | #define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \ | |
79 | WAKE_MCAST | WAKE_BCAST | \ | |
80 | WAKE_ARP | WAKE_MAGIC) | |
81 | ||
82 | /* USB related defines */ | |
83 | #define BULK_IN_PIPE 1 | |
84 | #define BULK_OUT_PIPE 2 | |
85 | ||
86 | /* default autosuspend delay (mSec)*/ | |
87 | #define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000) | |
88 | ||
89 | static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = { | |
90 | "RX FCS Errors", | |
91 | "RX Alignment Errors", | |
92 | "Rx Fragment Errors", | |
93 | "RX Jabber Errors", | |
94 | "RX Undersize Frame Errors", | |
95 | "RX Oversize Frame Errors", | |
96 | "RX Dropped Frames", | |
97 | "RX Unicast Byte Count", | |
98 | "RX Broadcast Byte Count", | |
99 | "RX Multicast Byte Count", | |
100 | "RX Unicast Frames", | |
101 | "RX Broadcast Frames", | |
102 | "RX Multicast Frames", | |
103 | "RX Pause Frames", | |
104 | "RX 64 Byte Frames", | |
105 | "RX 65 - 127 Byte Frames", | |
106 | "RX 128 - 255 Byte Frames", | |
107 | "RX 256 - 511 Bytes Frames", | |
108 | "RX 512 - 1023 Byte Frames", | |
109 | "RX 1024 - 1518 Byte Frames", | |
110 | "RX Greater 1518 Byte Frames", | |
111 | "EEE RX LPI Transitions", | |
112 | "EEE RX LPI Time", | |
113 | "TX FCS Errors", | |
114 | "TX Excess Deferral Errors", | |
115 | "TX Carrier Errors", | |
116 | "TX Bad Byte Count", | |
117 | "TX Single Collisions", | |
118 | "TX Multiple Collisions", | |
119 | "TX Excessive Collision", | |
120 | "TX Late Collisions", | |
121 | "TX Unicast Byte Count", | |
122 | "TX Broadcast Byte Count", | |
123 | "TX Multicast Byte Count", | |
124 | "TX Unicast Frames", | |
125 | "TX Broadcast Frames", | |
126 | "TX Multicast Frames", | |
127 | "TX Pause Frames", | |
128 | "TX 64 Byte Frames", | |
129 | "TX 65 - 127 Byte Frames", | |
130 | "TX 128 - 255 Byte Frames", | |
131 | "TX 256 - 511 Bytes Frames", | |
132 | "TX 512 - 1023 Byte Frames", | |
133 | "TX 1024 - 1518 Byte Frames", | |
134 | "TX Greater 1518 Byte Frames", | |
135 | "EEE TX LPI Transitions", | |
136 | "EEE TX LPI Time", | |
137 | }; | |
138 | ||
139 | struct lan78xx_statstage { | |
140 | u32 rx_fcs_errors; | |
141 | u32 rx_alignment_errors; | |
142 | u32 rx_fragment_errors; | |
143 | u32 rx_jabber_errors; | |
144 | u32 rx_undersize_frame_errors; | |
145 | u32 rx_oversize_frame_errors; | |
146 | u32 rx_dropped_frames; | |
147 | u32 rx_unicast_byte_count; | |
148 | u32 rx_broadcast_byte_count; | |
149 | u32 rx_multicast_byte_count; | |
150 | u32 rx_unicast_frames; | |
151 | u32 rx_broadcast_frames; | |
152 | u32 rx_multicast_frames; | |
153 | u32 rx_pause_frames; | |
154 | u32 rx_64_byte_frames; | |
155 | u32 rx_65_127_byte_frames; | |
156 | u32 rx_128_255_byte_frames; | |
157 | u32 rx_256_511_bytes_frames; | |
158 | u32 rx_512_1023_byte_frames; | |
159 | u32 rx_1024_1518_byte_frames; | |
160 | u32 rx_greater_1518_byte_frames; | |
161 | u32 eee_rx_lpi_transitions; | |
162 | u32 eee_rx_lpi_time; | |
163 | u32 tx_fcs_errors; | |
164 | u32 tx_excess_deferral_errors; | |
165 | u32 tx_carrier_errors; | |
166 | u32 tx_bad_byte_count; | |
167 | u32 tx_single_collisions; | |
168 | u32 tx_multiple_collisions; | |
169 | u32 tx_excessive_collision; | |
170 | u32 tx_late_collisions; | |
171 | u32 tx_unicast_byte_count; | |
172 | u32 tx_broadcast_byte_count; | |
173 | u32 tx_multicast_byte_count; | |
174 | u32 tx_unicast_frames; | |
175 | u32 tx_broadcast_frames; | |
176 | u32 tx_multicast_frames; | |
177 | u32 tx_pause_frames; | |
178 | u32 tx_64_byte_frames; | |
179 | u32 tx_65_127_byte_frames; | |
180 | u32 tx_128_255_byte_frames; | |
181 | u32 tx_256_511_bytes_frames; | |
182 | u32 tx_512_1023_byte_frames; | |
183 | u32 tx_1024_1518_byte_frames; | |
184 | u32 tx_greater_1518_byte_frames; | |
185 | u32 eee_tx_lpi_transitions; | |
186 | u32 eee_tx_lpi_time; | |
187 | }; | |
188 | ||
189 | struct lan78xx_net; | |
190 | ||
191 | struct lan78xx_priv { | |
192 | struct lan78xx_net *dev; | |
193 | u32 rfe_ctl; | |
194 | u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */ | |
195 | u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */ | |
196 | u32 vlan_table[DP_SEL_VHF_VLAN_LEN]; | |
197 | struct mutex dataport_mutex; /* for dataport access */ | |
198 | spinlock_t rfe_ctl_lock; /* for rfe register access */ | |
199 | struct work_struct set_multicast; | |
200 | struct work_struct set_vlan; | |
201 | u32 wol; | |
202 | }; | |
203 | ||
204 | enum skb_state { | |
205 | illegal = 0, | |
206 | tx_start, | |
207 | tx_done, | |
208 | rx_start, | |
209 | rx_done, | |
210 | rx_cleanup, | |
211 | unlink_start | |
212 | }; | |
213 | ||
214 | struct skb_data { /* skb->cb is one of these */ | |
215 | struct urb *urb; | |
216 | struct lan78xx_net *dev; | |
217 | enum skb_state state; | |
218 | size_t length; | |
219 | }; | |
220 | ||
221 | struct usb_context { | |
222 | struct usb_ctrlrequest req; | |
223 | struct lan78xx_net *dev; | |
224 | }; | |
225 | ||
226 | #define EVENT_TX_HALT 0 | |
227 | #define EVENT_RX_HALT 1 | |
228 | #define EVENT_RX_MEMORY 2 | |
229 | #define EVENT_STS_SPLIT 3 | |
230 | #define EVENT_LINK_RESET 4 | |
231 | #define EVENT_RX_PAUSED 5 | |
232 | #define EVENT_DEV_WAKING 6 | |
233 | #define EVENT_DEV_ASLEEP 7 | |
234 | #define EVENT_DEV_OPEN 8 | |
235 | ||
236 | struct lan78xx_net { | |
237 | struct net_device *net; | |
238 | struct usb_device *udev; | |
239 | struct usb_interface *intf; | |
240 | void *driver_priv; | |
241 | ||
242 | int rx_qlen; | |
243 | int tx_qlen; | |
244 | struct sk_buff_head rxq; | |
245 | struct sk_buff_head txq; | |
246 | struct sk_buff_head done; | |
247 | struct sk_buff_head rxq_pause; | |
248 | struct sk_buff_head txq_pend; | |
249 | ||
250 | struct tasklet_struct bh; | |
251 | struct delayed_work wq; | |
252 | ||
253 | struct usb_host_endpoint *ep_blkin; | |
254 | struct usb_host_endpoint *ep_blkout; | |
255 | struct usb_host_endpoint *ep_intr; | |
256 | ||
257 | int msg_enable; | |
258 | ||
259 | struct urb *urb_intr; | |
260 | struct usb_anchor deferred; | |
261 | ||
262 | struct mutex phy_mutex; /* for phy access */ | |
263 | unsigned pipe_in, pipe_out, pipe_intr; | |
264 | ||
265 | u32 hard_mtu; /* count any extra framing */ | |
266 | size_t rx_urb_size; /* size for rx urbs */ | |
267 | ||
268 | unsigned long flags; | |
269 | ||
270 | wait_queue_head_t *wait; | |
271 | unsigned char suspend_count; | |
272 | ||
273 | unsigned maxpacket; | |
274 | struct timer_list delay; | |
275 | ||
276 | unsigned long data[5]; | |
55d7de9d WH |
277 | |
278 | int link_on; | |
279 | u8 mdix_ctrl; | |
ce85e13a WH |
280 | |
281 | u32 devid; | |
282 | struct mii_bus *mdiobus; | |
55d7de9d WH |
283 | }; |
284 | ||
285 | /* use ethtool to change the level for any given device */ | |
286 | static int msg_level = -1; | |
287 | module_param(msg_level, int, 0); | |
288 | MODULE_PARM_DESC(msg_level, "Override default message level"); | |
289 | ||
290 | static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) | |
291 | { | |
292 | u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); | |
293 | int ret; | |
294 | ||
55d7de9d WH |
295 | if (!buf) |
296 | return -ENOMEM; | |
297 | ||
298 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
299 | USB_VENDOR_REQUEST_READ_REGISTER, | |
300 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
301 | 0, index, buf, 4, USB_CTRL_GET_TIMEOUT); | |
302 | if (likely(ret >= 0)) { | |
303 | le32_to_cpus(buf); | |
304 | *data = *buf; | |
305 | } else { | |
306 | netdev_warn(dev->net, | |
307 | "Failed to read register index 0x%08x. ret = %d", | |
308 | index, ret); | |
309 | } | |
310 | ||
311 | kfree(buf); | |
312 | ||
313 | return ret; | |
314 | } | |
315 | ||
316 | static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data) | |
317 | { | |
318 | u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); | |
319 | int ret; | |
320 | ||
55d7de9d WH |
321 | if (!buf) |
322 | return -ENOMEM; | |
323 | ||
324 | *buf = data; | |
325 | cpu_to_le32s(buf); | |
326 | ||
327 | ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
328 | USB_VENDOR_REQUEST_WRITE_REGISTER, | |
329 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
330 | 0, index, buf, 4, USB_CTRL_SET_TIMEOUT); | |
331 | if (unlikely(ret < 0)) { | |
332 | netdev_warn(dev->net, | |
333 | "Failed to write register index 0x%08x. ret = %d", | |
334 | index, ret); | |
335 | } | |
336 | ||
337 | kfree(buf); | |
338 | ||
339 | return ret; | |
340 | } | |
341 | ||
342 | static int lan78xx_read_stats(struct lan78xx_net *dev, | |
343 | struct lan78xx_statstage *data) | |
344 | { | |
345 | int ret = 0; | |
346 | int i; | |
347 | struct lan78xx_statstage *stats; | |
348 | u32 *src; | |
349 | u32 *dst; | |
350 | ||
55d7de9d WH |
351 | stats = kmalloc(sizeof(*stats), GFP_KERNEL); |
352 | if (!stats) | |
353 | return -ENOMEM; | |
354 | ||
355 | ret = usb_control_msg(dev->udev, | |
356 | usb_rcvctrlpipe(dev->udev, 0), | |
357 | USB_VENDOR_REQUEST_GET_STATS, | |
358 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
359 | 0, | |
360 | 0, | |
361 | (void *)stats, | |
362 | sizeof(*stats), | |
363 | USB_CTRL_SET_TIMEOUT); | |
364 | if (likely(ret >= 0)) { | |
365 | src = (u32 *)stats; | |
366 | dst = (u32 *)data; | |
367 | for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) { | |
368 | le32_to_cpus(&src[i]); | |
369 | dst[i] = src[i]; | |
370 | } | |
371 | } else { | |
372 | netdev_warn(dev->net, | |
373 | "Failed to read stat ret = 0x%x", ret); | |
374 | } | |
375 | ||
376 | kfree(stats); | |
377 | ||
378 | return ret; | |
379 | } | |
380 | ||
381 | /* Loop until the read is completed with timeout called with phy_mutex held */ | |
382 | static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev) | |
383 | { | |
384 | unsigned long start_time = jiffies; | |
385 | u32 val; | |
386 | int ret; | |
387 | ||
388 | do { | |
389 | ret = lan78xx_read_reg(dev, MII_ACC, &val); | |
390 | if (unlikely(ret < 0)) | |
391 | return -EIO; | |
392 | ||
393 | if (!(val & MII_ACC_MII_BUSY_)) | |
394 | return 0; | |
395 | } while (!time_after(jiffies, start_time + HZ)); | |
396 | ||
397 | return -EIO; | |
398 | } | |
399 | ||
400 | static inline u32 mii_access(int id, int index, int read) | |
401 | { | |
402 | u32 ret; | |
403 | ||
404 | ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_; | |
405 | ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_; | |
406 | if (read) | |
407 | ret |= MII_ACC_MII_READ_; | |
408 | else | |
409 | ret |= MII_ACC_MII_WRITE_; | |
410 | ret |= MII_ACC_MII_BUSY_; | |
411 | ||
412 | return ret; | |
413 | } | |
414 | ||
55d7de9d WH |
415 | static int lan78xx_wait_eeprom(struct lan78xx_net *dev) |
416 | { | |
417 | unsigned long start_time = jiffies; | |
418 | u32 val; | |
419 | int ret; | |
420 | ||
421 | do { | |
422 | ret = lan78xx_read_reg(dev, E2P_CMD, &val); | |
423 | if (unlikely(ret < 0)) | |
424 | return -EIO; | |
425 | ||
426 | if (!(val & E2P_CMD_EPC_BUSY_) || | |
427 | (val & E2P_CMD_EPC_TIMEOUT_)) | |
428 | break; | |
429 | usleep_range(40, 100); | |
430 | } while (!time_after(jiffies, start_time + HZ)); | |
431 | ||
432 | if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) { | |
433 | netdev_warn(dev->net, "EEPROM read operation timeout"); | |
434 | return -EIO; | |
435 | } | |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
440 | static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev) | |
441 | { | |
442 | unsigned long start_time = jiffies; | |
443 | u32 val; | |
444 | int ret; | |
445 | ||
446 | do { | |
447 | ret = lan78xx_read_reg(dev, E2P_CMD, &val); | |
448 | if (unlikely(ret < 0)) | |
449 | return -EIO; | |
450 | ||
451 | if (!(val & E2P_CMD_EPC_BUSY_)) | |
452 | return 0; | |
453 | ||
454 | usleep_range(40, 100); | |
455 | } while (!time_after(jiffies, start_time + HZ)); | |
456 | ||
457 | netdev_warn(dev->net, "EEPROM is busy"); | |
458 | return -EIO; | |
459 | } | |
460 | ||
461 | static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset, | |
462 | u32 length, u8 *data) | |
463 | { | |
464 | u32 val; | |
a0db7d10 | 465 | u32 saved; |
55d7de9d | 466 | int i, ret; |
a0db7d10 WH |
467 | int retval; |
468 | ||
469 | /* depends on chip, some EEPROM pins are muxed with LED function. | |
470 | * disable & restore LED function to access EEPROM. | |
471 | */ | |
472 | ret = lan78xx_read_reg(dev, HW_CFG, &val); | |
473 | saved = val; | |
474 | if ((dev->devid & ID_REV_CHIP_ID_MASK_) == 0x78000000) { | |
475 | val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); | |
476 | ret = lan78xx_write_reg(dev, HW_CFG, val); | |
477 | } | |
55d7de9d | 478 | |
a0db7d10 WH |
479 | retval = lan78xx_eeprom_confirm_not_busy(dev); |
480 | if (retval) | |
481 | return retval; | |
55d7de9d WH |
482 | |
483 | for (i = 0; i < length; i++) { | |
484 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_; | |
485 | val |= (offset & E2P_CMD_EPC_ADDR_MASK_); | |
486 | ret = lan78xx_write_reg(dev, E2P_CMD, val); | |
a0db7d10 WH |
487 | if (unlikely(ret < 0)) { |
488 | retval = -EIO; | |
489 | goto exit; | |
490 | } | |
55d7de9d | 491 | |
a0db7d10 WH |
492 | retval = lan78xx_wait_eeprom(dev); |
493 | if (retval < 0) | |
494 | goto exit; | |
55d7de9d WH |
495 | |
496 | ret = lan78xx_read_reg(dev, E2P_DATA, &val); | |
a0db7d10 WH |
497 | if (unlikely(ret < 0)) { |
498 | retval = -EIO; | |
499 | goto exit; | |
500 | } | |
55d7de9d WH |
501 | |
502 | data[i] = val & 0xFF; | |
503 | offset++; | |
504 | } | |
505 | ||
a0db7d10 WH |
506 | retval = 0; |
507 | exit: | |
508 | if ((dev->devid & ID_REV_CHIP_ID_MASK_) == 0x78000000) | |
509 | ret = lan78xx_write_reg(dev, HW_CFG, saved); | |
510 | ||
511 | return retval; | |
55d7de9d WH |
512 | } |
513 | ||
514 | static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset, | |
515 | u32 length, u8 *data) | |
516 | { | |
517 | u8 sig; | |
518 | int ret; | |
519 | ||
520 | ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig); | |
521 | if ((ret == 0) && (sig == EEPROM_INDICATOR)) | |
522 | ret = lan78xx_read_raw_eeprom(dev, offset, length, data); | |
523 | else | |
524 | ret = -EINVAL; | |
525 | ||
526 | return ret; | |
527 | } | |
528 | ||
529 | static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset, | |
530 | u32 length, u8 *data) | |
531 | { | |
532 | u32 val; | |
a0db7d10 | 533 | u32 saved; |
55d7de9d | 534 | int i, ret; |
a0db7d10 WH |
535 | int retval; |
536 | ||
537 | /* depends on chip, some EEPROM pins are muxed with LED function. | |
538 | * disable & restore LED function to access EEPROM. | |
539 | */ | |
540 | ret = lan78xx_read_reg(dev, HW_CFG, &val); | |
541 | saved = val; | |
542 | if ((dev->devid & ID_REV_CHIP_ID_MASK_) == 0x78000000) { | |
543 | val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); | |
544 | ret = lan78xx_write_reg(dev, HW_CFG, val); | |
545 | } | |
55d7de9d | 546 | |
a0db7d10 WH |
547 | retval = lan78xx_eeprom_confirm_not_busy(dev); |
548 | if (retval) | |
549 | goto exit; | |
55d7de9d WH |
550 | |
551 | /* Issue write/erase enable command */ | |
552 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_; | |
553 | ret = lan78xx_write_reg(dev, E2P_CMD, val); | |
a0db7d10 WH |
554 | if (unlikely(ret < 0)) { |
555 | retval = -EIO; | |
556 | goto exit; | |
557 | } | |
55d7de9d | 558 | |
a0db7d10 WH |
559 | retval = lan78xx_wait_eeprom(dev); |
560 | if (retval < 0) | |
561 | goto exit; | |
55d7de9d WH |
562 | |
563 | for (i = 0; i < length; i++) { | |
564 | /* Fill data register */ | |
565 | val = data[i]; | |
566 | ret = lan78xx_write_reg(dev, E2P_DATA, val); | |
a0db7d10 WH |
567 | if (ret < 0) { |
568 | retval = -EIO; | |
569 | goto exit; | |
570 | } | |
55d7de9d WH |
571 | |
572 | /* Send "write" command */ | |
573 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_; | |
574 | val |= (offset & E2P_CMD_EPC_ADDR_MASK_); | |
575 | ret = lan78xx_write_reg(dev, E2P_CMD, val); | |
a0db7d10 WH |
576 | if (ret < 0) { |
577 | retval = -EIO; | |
578 | goto exit; | |
579 | } | |
55d7de9d | 580 | |
a0db7d10 WH |
581 | retval = lan78xx_wait_eeprom(dev); |
582 | if (retval < 0) | |
583 | goto exit; | |
55d7de9d WH |
584 | |
585 | offset++; | |
586 | } | |
587 | ||
a0db7d10 WH |
588 | retval = 0; |
589 | exit: | |
590 | if ((dev->devid & ID_REV_CHIP_ID_MASK_) == 0x78000000) | |
591 | ret = lan78xx_write_reg(dev, HW_CFG, saved); | |
592 | ||
593 | return retval; | |
55d7de9d WH |
594 | } |
595 | ||
596 | static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset, | |
597 | u32 length, u8 *data) | |
598 | { | |
599 | int i; | |
600 | int ret; | |
601 | u32 buf; | |
602 | unsigned long timeout; | |
603 | ||
604 | ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); | |
605 | ||
606 | if (buf & OTP_PWR_DN_PWRDN_N_) { | |
607 | /* clear it and wait to be cleared */ | |
608 | ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0); | |
609 | ||
610 | timeout = jiffies + HZ; | |
611 | do { | |
612 | usleep_range(1, 10); | |
613 | ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); | |
614 | if (time_after(jiffies, timeout)) { | |
615 | netdev_warn(dev->net, | |
616 | "timeout on OTP_PWR_DN"); | |
617 | return -EIO; | |
618 | } | |
619 | } while (buf & OTP_PWR_DN_PWRDN_N_); | |
620 | } | |
621 | ||
622 | for (i = 0; i < length; i++) { | |
623 | ret = lan78xx_write_reg(dev, OTP_ADDR1, | |
624 | ((offset + i) >> 8) & OTP_ADDR1_15_11); | |
625 | ret = lan78xx_write_reg(dev, OTP_ADDR2, | |
626 | ((offset + i) & OTP_ADDR2_10_3)); | |
627 | ||
628 | ret = lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_); | |
629 | ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); | |
630 | ||
631 | timeout = jiffies + HZ; | |
632 | do { | |
633 | udelay(1); | |
634 | ret = lan78xx_read_reg(dev, OTP_STATUS, &buf); | |
635 | if (time_after(jiffies, timeout)) { | |
636 | netdev_warn(dev->net, | |
637 | "timeout on OTP_STATUS"); | |
638 | return -EIO; | |
639 | } | |
640 | } while (buf & OTP_STATUS_BUSY_); | |
641 | ||
642 | ret = lan78xx_read_reg(dev, OTP_RD_DATA, &buf); | |
643 | ||
644 | data[i] = (u8)(buf & 0xFF); | |
645 | } | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
9fb6066d WH |
650 | static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset, |
651 | u32 length, u8 *data) | |
652 | { | |
653 | int i; | |
654 | int ret; | |
655 | u32 buf; | |
656 | unsigned long timeout; | |
657 | ||
658 | ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); | |
659 | ||
660 | if (buf & OTP_PWR_DN_PWRDN_N_) { | |
661 | /* clear it and wait to be cleared */ | |
662 | ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0); | |
663 | ||
664 | timeout = jiffies + HZ; | |
665 | do { | |
666 | udelay(1); | |
667 | ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf); | |
668 | if (time_after(jiffies, timeout)) { | |
669 | netdev_warn(dev->net, | |
670 | "timeout on OTP_PWR_DN completion"); | |
671 | return -EIO; | |
672 | } | |
673 | } while (buf & OTP_PWR_DN_PWRDN_N_); | |
674 | } | |
675 | ||
676 | /* set to BYTE program mode */ | |
677 | ret = lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_); | |
678 | ||
679 | for (i = 0; i < length; i++) { | |
680 | ret = lan78xx_write_reg(dev, OTP_ADDR1, | |
681 | ((offset + i) >> 8) & OTP_ADDR1_15_11); | |
682 | ret = lan78xx_write_reg(dev, OTP_ADDR2, | |
683 | ((offset + i) & OTP_ADDR2_10_3)); | |
684 | ret = lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]); | |
685 | ret = lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_); | |
686 | ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); | |
687 | ||
688 | timeout = jiffies + HZ; | |
689 | do { | |
690 | udelay(1); | |
691 | ret = lan78xx_read_reg(dev, OTP_STATUS, &buf); | |
692 | if (time_after(jiffies, timeout)) { | |
693 | netdev_warn(dev->net, | |
694 | "Timeout on OTP_STATUS completion"); | |
695 | return -EIO; | |
696 | } | |
697 | } while (buf & OTP_STATUS_BUSY_); | |
698 | } | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
55d7de9d WH |
703 | static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset, |
704 | u32 length, u8 *data) | |
705 | { | |
706 | u8 sig; | |
707 | int ret; | |
708 | ||
709 | ret = lan78xx_read_raw_otp(dev, 0, 1, &sig); | |
710 | ||
711 | if (ret == 0) { | |
712 | if (sig == OTP_INDICATOR_1) | |
713 | offset = offset; | |
714 | else if (sig == OTP_INDICATOR_2) | |
715 | offset += 0x100; | |
716 | else | |
717 | ret = -EINVAL; | |
718 | ret = lan78xx_read_raw_otp(dev, offset, length, data); | |
719 | } | |
720 | ||
721 | return ret; | |
722 | } | |
723 | ||
724 | static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev) | |
725 | { | |
726 | int i, ret; | |
727 | ||
728 | for (i = 0; i < 100; i++) { | |
729 | u32 dp_sel; | |
730 | ||
731 | ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); | |
732 | if (unlikely(ret < 0)) | |
733 | return -EIO; | |
734 | ||
735 | if (dp_sel & DP_SEL_DPRDY_) | |
736 | return 0; | |
737 | ||
738 | usleep_range(40, 100); | |
739 | } | |
740 | ||
741 | netdev_warn(dev->net, "lan78xx_dataport_wait_not_busy timed out"); | |
742 | ||
743 | return -EIO; | |
744 | } | |
745 | ||
746 | static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select, | |
747 | u32 addr, u32 length, u32 *buf) | |
748 | { | |
749 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
750 | u32 dp_sel; | |
751 | int i, ret; | |
752 | ||
753 | if (usb_autopm_get_interface(dev->intf) < 0) | |
754 | return 0; | |
755 | ||
756 | mutex_lock(&pdata->dataport_mutex); | |
757 | ||
758 | ret = lan78xx_dataport_wait_not_busy(dev); | |
759 | if (ret < 0) | |
760 | goto done; | |
761 | ||
762 | ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); | |
763 | ||
764 | dp_sel &= ~DP_SEL_RSEL_MASK_; | |
765 | dp_sel |= ram_select; | |
766 | ret = lan78xx_write_reg(dev, DP_SEL, dp_sel); | |
767 | ||
768 | for (i = 0; i < length; i++) { | |
769 | ret = lan78xx_write_reg(dev, DP_ADDR, addr + i); | |
770 | ||
771 | ret = lan78xx_write_reg(dev, DP_DATA, buf[i]); | |
772 | ||
773 | ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_); | |
774 | ||
775 | ret = lan78xx_dataport_wait_not_busy(dev); | |
776 | if (ret < 0) | |
777 | goto done; | |
778 | } | |
779 | ||
780 | done: | |
781 | mutex_unlock(&pdata->dataport_mutex); | |
782 | usb_autopm_put_interface(dev->intf); | |
783 | ||
784 | return ret; | |
785 | } | |
786 | ||
787 | static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata, | |
788 | int index, u8 addr[ETH_ALEN]) | |
789 | { | |
790 | u32 temp; | |
791 | ||
792 | if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) { | |
793 | temp = addr[3]; | |
794 | temp = addr[2] | (temp << 8); | |
795 | temp = addr[1] | (temp << 8); | |
796 | temp = addr[0] | (temp << 8); | |
797 | pdata->pfilter_table[index][1] = temp; | |
798 | temp = addr[5]; | |
799 | temp = addr[4] | (temp << 8); | |
800 | temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_; | |
801 | pdata->pfilter_table[index][0] = temp; | |
802 | } | |
803 | } | |
804 | ||
805 | /* returns hash bit number for given MAC address */ | |
806 | static inline u32 lan78xx_hash(char addr[ETH_ALEN]) | |
807 | { | |
808 | return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; | |
809 | } | |
810 | ||
811 | static void lan78xx_deferred_multicast_write(struct work_struct *param) | |
812 | { | |
813 | struct lan78xx_priv *pdata = | |
814 | container_of(param, struct lan78xx_priv, set_multicast); | |
815 | struct lan78xx_net *dev = pdata->dev; | |
816 | int i; | |
817 | int ret; | |
818 | ||
819 | netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", | |
820 | pdata->rfe_ctl); | |
821 | ||
822 | lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN, | |
823 | DP_SEL_VHF_HASH_LEN, pdata->mchash_table); | |
824 | ||
825 | for (i = 1; i < NUM_OF_MAF; i++) { | |
826 | ret = lan78xx_write_reg(dev, MAF_HI(i), 0); | |
827 | ret = lan78xx_write_reg(dev, MAF_LO(i), | |
828 | pdata->pfilter_table[i][1]); | |
829 | ret = lan78xx_write_reg(dev, MAF_HI(i), | |
830 | pdata->pfilter_table[i][0]); | |
831 | } | |
832 | ||
833 | ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); | |
834 | } | |
835 | ||
836 | static void lan78xx_set_multicast(struct net_device *netdev) | |
837 | { | |
838 | struct lan78xx_net *dev = netdev_priv(netdev); | |
839 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
840 | unsigned long flags; | |
841 | int i; | |
842 | ||
843 | spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); | |
844 | ||
845 | pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ | | |
846 | RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); | |
847 | ||
848 | for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) | |
849 | pdata->mchash_table[i] = 0; | |
850 | /* pfilter_table[0] has own HW address */ | |
851 | for (i = 1; i < NUM_OF_MAF; i++) { | |
852 | pdata->pfilter_table[i][0] = | |
853 | pdata->pfilter_table[i][1] = 0; | |
854 | } | |
855 | ||
856 | pdata->rfe_ctl |= RFE_CTL_BCAST_EN_; | |
857 | ||
858 | if (dev->net->flags & IFF_PROMISC) { | |
859 | netif_dbg(dev, drv, dev->net, "promiscuous mode enabled"); | |
860 | pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_; | |
861 | } else { | |
862 | if (dev->net->flags & IFF_ALLMULTI) { | |
863 | netif_dbg(dev, drv, dev->net, | |
864 | "receive all multicast enabled"); | |
865 | pdata->rfe_ctl |= RFE_CTL_MCAST_EN_; | |
866 | } | |
867 | } | |
868 | ||
869 | if (netdev_mc_count(dev->net)) { | |
870 | struct netdev_hw_addr *ha; | |
871 | int i; | |
872 | ||
873 | netif_dbg(dev, drv, dev->net, "receive multicast hash filter"); | |
874 | ||
875 | pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_; | |
876 | ||
877 | i = 1; | |
878 | netdev_for_each_mc_addr(ha, netdev) { | |
879 | /* set first 32 into Perfect Filter */ | |
880 | if (i < 33) { | |
881 | lan78xx_set_addr_filter(pdata, i, ha->addr); | |
882 | } else { | |
883 | u32 bitnum = lan78xx_hash(ha->addr); | |
884 | ||
885 | pdata->mchash_table[bitnum / 32] |= | |
886 | (1 << (bitnum % 32)); | |
887 | pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_; | |
888 | } | |
889 | i++; | |
890 | } | |
891 | } | |
892 | ||
893 | spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); | |
894 | ||
895 | /* defer register writes to a sleepable context */ | |
896 | schedule_work(&pdata->set_multicast); | |
897 | } | |
898 | ||
899 | static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex, | |
900 | u16 lcladv, u16 rmtadv) | |
901 | { | |
902 | u32 flow = 0, fct_flow = 0; | |
903 | int ret; | |
904 | ||
905 | u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); | |
906 | ||
907 | if (cap & FLOW_CTRL_TX) | |
908 | flow = (FLOW_CR_TX_FCEN_ | 0xFFFF); | |
909 | ||
910 | if (cap & FLOW_CTRL_RX) | |
911 | flow |= FLOW_CR_RX_FCEN_; | |
912 | ||
913 | if (dev->udev->speed == USB_SPEED_SUPER) | |
914 | fct_flow = 0x817; | |
915 | else if (dev->udev->speed == USB_SPEED_HIGH) | |
916 | fct_flow = 0x211; | |
917 | ||
918 | netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s", | |
919 | (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), | |
920 | (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); | |
921 | ||
922 | ret = lan78xx_write_reg(dev, FCT_FLOW, fct_flow); | |
923 | ||
924 | /* threshold value should be set before enabling flow */ | |
925 | ret = lan78xx_write_reg(dev, FLOW, flow); | |
926 | ||
927 | return 0; | |
928 | } | |
929 | ||
930 | static int lan78xx_link_reset(struct lan78xx_net *dev) | |
931 | { | |
ce85e13a | 932 | struct phy_device *phydev = dev->net->phydev; |
55d7de9d | 933 | struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET }; |
99c79ece | 934 | int ladv, radv, ret; |
55d7de9d WH |
935 | u32 buf; |
936 | ||
937 | /* clear PHY interrupt status */ | |
bdfba55e | 938 | ret = phy_read(phydev, LAN88XX_INT_STS); |
55d7de9d WH |
939 | if (unlikely(ret < 0)) |
940 | return -EIO; | |
941 | ||
942 | /* clear LAN78xx interrupt status */ | |
943 | ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_); | |
944 | if (unlikely(ret < 0)) | |
945 | return -EIO; | |
946 | ||
ce85e13a WH |
947 | phy_read_status(phydev); |
948 | ||
949 | if (!phydev->link && dev->link_on) { | |
55d7de9d | 950 | dev->link_on = false; |
55d7de9d WH |
951 | |
952 | /* reset MAC */ | |
953 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); | |
954 | if (unlikely(ret < 0)) | |
955 | return -EIO; | |
956 | buf |= MAC_CR_RST_; | |
957 | ret = lan78xx_write_reg(dev, MAC_CR, buf); | |
958 | if (unlikely(ret < 0)) | |
959 | return -EIO; | |
e4953910 WH |
960 | |
961 | phy_mac_interrupt(phydev, 0); | |
ce85e13a | 962 | } else if (phydev->link && !dev->link_on) { |
55d7de9d WH |
963 | dev->link_on = true; |
964 | ||
ce85e13a | 965 | phy_ethtool_gset(phydev, &ecmd); |
55d7de9d | 966 | |
bdfba55e | 967 | ret = phy_read(phydev, LAN88XX_INT_STS); |
55d7de9d WH |
968 | |
969 | if (dev->udev->speed == USB_SPEED_SUPER) { | |
970 | if (ethtool_cmd_speed(&ecmd) == 1000) { | |
971 | /* disable U2 */ | |
972 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); | |
973 | buf &= ~USB_CFG1_DEV_U2_INIT_EN_; | |
974 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); | |
975 | /* enable U1 */ | |
976 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); | |
977 | buf |= USB_CFG1_DEV_U1_INIT_EN_; | |
978 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); | |
979 | } else { | |
980 | /* enable U1 & U2 */ | |
981 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); | |
982 | buf |= USB_CFG1_DEV_U2_INIT_EN_; | |
983 | buf |= USB_CFG1_DEV_U1_INIT_EN_; | |
984 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); | |
985 | } | |
986 | } | |
987 | ||
ce85e13a | 988 | ladv = phy_read(phydev, MII_ADVERTISE); |
99c79ece GU |
989 | if (ladv < 0) |
990 | return ladv; | |
55d7de9d | 991 | |
ce85e13a | 992 | radv = phy_read(phydev, MII_LPA); |
99c79ece GU |
993 | if (radv < 0) |
994 | return radv; | |
55d7de9d WH |
995 | |
996 | netif_dbg(dev, link, dev->net, | |
997 | "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x", | |
998 | ethtool_cmd_speed(&ecmd), ecmd.duplex, ladv, radv); | |
999 | ||
1000 | ret = lan78xx_update_flowcontrol(dev, ecmd.duplex, ladv, radv); | |
e4953910 | 1001 | phy_mac_interrupt(phydev, 1); |
55d7de9d WH |
1002 | } |
1003 | ||
1004 | return ret; | |
1005 | } | |
1006 | ||
1007 | /* some work can't be done in tasklets, so we use keventd | |
1008 | * | |
1009 | * NOTE: annoying asymmetry: if it's active, schedule_work() fails, | |
1010 | * but tasklet_schedule() doesn't. hope the failure is rare. | |
1011 | */ | |
1012 | void lan78xx_defer_kevent(struct lan78xx_net *dev, int work) | |
1013 | { | |
1014 | set_bit(work, &dev->flags); | |
1015 | if (!schedule_delayed_work(&dev->wq, 0)) | |
1016 | netdev_err(dev->net, "kevent %d may have been dropped\n", work); | |
1017 | } | |
1018 | ||
1019 | static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb) | |
1020 | { | |
1021 | u32 intdata; | |
1022 | ||
1023 | if (urb->actual_length != 4) { | |
1024 | netdev_warn(dev->net, | |
1025 | "unexpected urb length %d", urb->actual_length); | |
1026 | return; | |
1027 | } | |
1028 | ||
1029 | memcpy(&intdata, urb->transfer_buffer, 4); | |
1030 | le32_to_cpus(&intdata); | |
1031 | ||
1032 | if (intdata & INT_ENP_PHY_INT) { | |
1033 | netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata); | |
1034 | lan78xx_defer_kevent(dev, EVENT_LINK_RESET); | |
1035 | } else | |
1036 | netdev_warn(dev->net, | |
1037 | "unexpected interrupt: 0x%08x\n", intdata); | |
1038 | } | |
1039 | ||
1040 | static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev) | |
1041 | { | |
1042 | return MAX_EEPROM_SIZE; | |
1043 | } | |
1044 | ||
1045 | static int lan78xx_ethtool_get_eeprom(struct net_device *netdev, | |
1046 | struct ethtool_eeprom *ee, u8 *data) | |
1047 | { | |
1048 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1049 | ||
1050 | ee->magic = LAN78XX_EEPROM_MAGIC; | |
1051 | ||
1052 | return lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data); | |
1053 | } | |
1054 | ||
1055 | static int lan78xx_ethtool_set_eeprom(struct net_device *netdev, | |
1056 | struct ethtool_eeprom *ee, u8 *data) | |
1057 | { | |
1058 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1059 | ||
1060 | /* Allow entire eeprom update only */ | |
1061 | if ((ee->magic == LAN78XX_EEPROM_MAGIC) && | |
1062 | (ee->offset == 0) && | |
1063 | (ee->len == 512) && | |
1064 | (data[0] == EEPROM_INDICATOR)) | |
1065 | return lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data); | |
1066 | else if ((ee->magic == LAN78XX_OTP_MAGIC) && | |
1067 | (ee->offset == 0) && | |
1068 | (ee->len == 512) && | |
1069 | (data[0] == OTP_INDICATOR_1)) | |
9fb6066d | 1070 | return lan78xx_write_raw_otp(dev, ee->offset, ee->len, data); |
55d7de9d WH |
1071 | |
1072 | return -EINVAL; | |
1073 | } | |
1074 | ||
1075 | static void lan78xx_get_strings(struct net_device *netdev, u32 stringset, | |
1076 | u8 *data) | |
1077 | { | |
1078 | if (stringset == ETH_SS_STATS) | |
1079 | memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings)); | |
1080 | } | |
1081 | ||
1082 | static int lan78xx_get_sset_count(struct net_device *netdev, int sset) | |
1083 | { | |
1084 | if (sset == ETH_SS_STATS) | |
1085 | return ARRAY_SIZE(lan78xx_gstrings); | |
1086 | else | |
1087 | return -EOPNOTSUPP; | |
1088 | } | |
1089 | ||
1090 | static void lan78xx_get_stats(struct net_device *netdev, | |
1091 | struct ethtool_stats *stats, u64 *data) | |
1092 | { | |
1093 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1094 | struct lan78xx_statstage lan78xx_stat; | |
1095 | u32 *p; | |
1096 | int i; | |
1097 | ||
1098 | if (usb_autopm_get_interface(dev->intf) < 0) | |
1099 | return; | |
1100 | ||
1101 | if (lan78xx_read_stats(dev, &lan78xx_stat) > 0) { | |
1102 | p = (u32 *)&lan78xx_stat; | |
1103 | for (i = 0; i < (sizeof(lan78xx_stat) / (sizeof(u32))); i++) | |
1104 | data[i] = p[i]; | |
1105 | } | |
1106 | ||
1107 | usb_autopm_put_interface(dev->intf); | |
1108 | } | |
1109 | ||
1110 | static void lan78xx_get_wol(struct net_device *netdev, | |
1111 | struct ethtool_wolinfo *wol) | |
1112 | { | |
1113 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1114 | int ret; | |
1115 | u32 buf; | |
1116 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1117 | ||
1118 | if (usb_autopm_get_interface(dev->intf) < 0) | |
1119 | return; | |
1120 | ||
1121 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); | |
1122 | if (unlikely(ret < 0)) { | |
1123 | wol->supported = 0; | |
1124 | wol->wolopts = 0; | |
1125 | } else { | |
1126 | if (buf & USB_CFG_RMT_WKP_) { | |
1127 | wol->supported = WAKE_ALL; | |
1128 | wol->wolopts = pdata->wol; | |
1129 | } else { | |
1130 | wol->supported = 0; | |
1131 | wol->wolopts = 0; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | usb_autopm_put_interface(dev->intf); | |
1136 | } | |
1137 | ||
1138 | static int lan78xx_set_wol(struct net_device *netdev, | |
1139 | struct ethtool_wolinfo *wol) | |
1140 | { | |
1141 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1142 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1143 | int ret; | |
1144 | ||
1145 | ret = usb_autopm_get_interface(dev->intf); | |
1146 | if (ret < 0) | |
1147 | return ret; | |
1148 | ||
1149 | pdata->wol = 0; | |
1150 | if (wol->wolopts & WAKE_UCAST) | |
1151 | pdata->wol |= WAKE_UCAST; | |
1152 | if (wol->wolopts & WAKE_MCAST) | |
1153 | pdata->wol |= WAKE_MCAST; | |
1154 | if (wol->wolopts & WAKE_BCAST) | |
1155 | pdata->wol |= WAKE_BCAST; | |
1156 | if (wol->wolopts & WAKE_MAGIC) | |
1157 | pdata->wol |= WAKE_MAGIC; | |
1158 | if (wol->wolopts & WAKE_PHY) | |
1159 | pdata->wol |= WAKE_PHY; | |
1160 | if (wol->wolopts & WAKE_ARP) | |
1161 | pdata->wol |= WAKE_ARP; | |
1162 | ||
1163 | device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts); | |
1164 | ||
ce85e13a WH |
1165 | phy_ethtool_set_wol(netdev->phydev, wol); |
1166 | ||
55d7de9d WH |
1167 | usb_autopm_put_interface(dev->intf); |
1168 | ||
1169 | return ret; | |
1170 | } | |
1171 | ||
1172 | static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata) | |
1173 | { | |
1174 | struct lan78xx_net *dev = netdev_priv(net); | |
ce85e13a | 1175 | struct phy_device *phydev = net->phydev; |
55d7de9d WH |
1176 | int ret; |
1177 | u32 buf; | |
55d7de9d WH |
1178 | |
1179 | ret = usb_autopm_get_interface(dev->intf); | |
1180 | if (ret < 0) | |
1181 | return ret; | |
1182 | ||
ce85e13a WH |
1183 | ret = phy_ethtool_get_eee(phydev, edata); |
1184 | if (ret < 0) | |
1185 | goto exit; | |
1186 | ||
55d7de9d WH |
1187 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
1188 | if (buf & MAC_CR_EEE_EN_) { | |
55d7de9d | 1189 | edata->eee_enabled = true; |
ce85e13a WH |
1190 | edata->eee_active = !!(edata->advertised & |
1191 | edata->lp_advertised); | |
55d7de9d WH |
1192 | edata->tx_lpi_enabled = true; |
1193 | /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */ | |
1194 | ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf); | |
1195 | edata->tx_lpi_timer = buf; | |
1196 | } else { | |
55d7de9d WH |
1197 | edata->eee_enabled = false; |
1198 | edata->eee_active = false; | |
55d7de9d WH |
1199 | edata->tx_lpi_enabled = false; |
1200 | edata->tx_lpi_timer = 0; | |
1201 | } | |
1202 | ||
ce85e13a WH |
1203 | ret = 0; |
1204 | exit: | |
55d7de9d WH |
1205 | usb_autopm_put_interface(dev->intf); |
1206 | ||
ce85e13a | 1207 | return ret; |
55d7de9d WH |
1208 | } |
1209 | ||
1210 | static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata) | |
1211 | { | |
1212 | struct lan78xx_net *dev = netdev_priv(net); | |
1213 | int ret; | |
1214 | u32 buf; | |
1215 | ||
1216 | ret = usb_autopm_get_interface(dev->intf); | |
1217 | if (ret < 0) | |
1218 | return ret; | |
1219 | ||
1220 | if (edata->eee_enabled) { | |
1221 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); | |
1222 | buf |= MAC_CR_EEE_EN_; | |
1223 | ret = lan78xx_write_reg(dev, MAC_CR, buf); | |
1224 | ||
ce85e13a WH |
1225 | phy_ethtool_set_eee(net->phydev, edata); |
1226 | ||
1227 | buf = (u32)edata->tx_lpi_timer; | |
1228 | ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf); | |
55d7de9d WH |
1229 | } else { |
1230 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); | |
1231 | buf &= ~MAC_CR_EEE_EN_; | |
1232 | ret = lan78xx_write_reg(dev, MAC_CR, buf); | |
1233 | } | |
1234 | ||
1235 | usb_autopm_put_interface(dev->intf); | |
1236 | ||
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | static u32 lan78xx_get_link(struct net_device *net) | |
1241 | { | |
ce85e13a | 1242 | phy_read_status(net->phydev); |
55d7de9d | 1243 | |
ce85e13a | 1244 | return net->phydev->link; |
55d7de9d WH |
1245 | } |
1246 | ||
1247 | int lan78xx_nway_reset(struct net_device *net) | |
1248 | { | |
ce85e13a | 1249 | return phy_start_aneg(net->phydev); |
55d7de9d WH |
1250 | } |
1251 | ||
1252 | static void lan78xx_get_drvinfo(struct net_device *net, | |
1253 | struct ethtool_drvinfo *info) | |
1254 | { | |
1255 | struct lan78xx_net *dev = netdev_priv(net); | |
1256 | ||
1257 | strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); | |
1258 | strncpy(info->version, DRIVER_VERSION, sizeof(info->version)); | |
1259 | usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); | |
1260 | } | |
1261 | ||
1262 | static u32 lan78xx_get_msglevel(struct net_device *net) | |
1263 | { | |
1264 | struct lan78xx_net *dev = netdev_priv(net); | |
1265 | ||
1266 | return dev->msg_enable; | |
1267 | } | |
1268 | ||
1269 | static void lan78xx_set_msglevel(struct net_device *net, u32 level) | |
1270 | { | |
1271 | struct lan78xx_net *dev = netdev_priv(net); | |
1272 | ||
1273 | dev->msg_enable = level; | |
1274 | } | |
1275 | ||
758c5c11 WH |
1276 | static int lan78xx_get_mdix_status(struct net_device *net) |
1277 | { | |
1278 | struct phy_device *phydev = net->phydev; | |
1279 | int buf; | |
1280 | ||
1281 | phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, LAN88XX_EXT_PAGE_SPACE_1); | |
1282 | buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL); | |
1283 | phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, LAN88XX_EXT_PAGE_SPACE_0); | |
1284 | ||
1285 | return buf; | |
1286 | } | |
1287 | ||
1288 | static void lan78xx_set_mdix_status(struct net_device *net, __u8 mdix_ctrl) | |
1289 | { | |
1290 | struct lan78xx_net *dev = netdev_priv(net); | |
1291 | struct phy_device *phydev = net->phydev; | |
1292 | int buf; | |
1293 | ||
1294 | if (mdix_ctrl == ETH_TP_MDI) { | |
1295 | phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, | |
1296 | LAN88XX_EXT_PAGE_SPACE_1); | |
1297 | buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL); | |
1298 | buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_; | |
1299 | phy_write(phydev, LAN88XX_EXT_MODE_CTRL, | |
1300 | buf | LAN88XX_EXT_MODE_CTRL_MDI_); | |
1301 | phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, | |
1302 | LAN88XX_EXT_PAGE_SPACE_0); | |
1303 | } else if (mdix_ctrl == ETH_TP_MDI_X) { | |
1304 | phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, | |
1305 | LAN88XX_EXT_PAGE_SPACE_1); | |
1306 | buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL); | |
1307 | buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_; | |
1308 | phy_write(phydev, LAN88XX_EXT_MODE_CTRL, | |
1309 | buf | LAN88XX_EXT_MODE_CTRL_MDI_X_); | |
1310 | phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, | |
1311 | LAN88XX_EXT_PAGE_SPACE_0); | |
1312 | } else if (mdix_ctrl == ETH_TP_MDI_AUTO) { | |
1313 | phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, | |
1314 | LAN88XX_EXT_PAGE_SPACE_1); | |
1315 | buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL); | |
1316 | buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_; | |
1317 | phy_write(phydev, LAN88XX_EXT_MODE_CTRL, | |
1318 | buf | LAN88XX_EXT_MODE_CTRL_AUTO_MDIX_); | |
1319 | phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, | |
1320 | LAN88XX_EXT_PAGE_SPACE_0); | |
1321 | } | |
1322 | dev->mdix_ctrl = mdix_ctrl; | |
1323 | } | |
1324 | ||
55d7de9d WH |
1325 | static int lan78xx_get_settings(struct net_device *net, struct ethtool_cmd *cmd) |
1326 | { | |
1327 | struct lan78xx_net *dev = netdev_priv(net); | |
ce85e13a | 1328 | struct phy_device *phydev = net->phydev; |
55d7de9d WH |
1329 | int ret; |
1330 | int buf; | |
1331 | ||
55d7de9d WH |
1332 | ret = usb_autopm_get_interface(dev->intf); |
1333 | if (ret < 0) | |
1334 | return ret; | |
1335 | ||
ce85e13a | 1336 | ret = phy_ethtool_gset(phydev, cmd); |
55d7de9d | 1337 | |
758c5c11 | 1338 | buf = lan78xx_get_mdix_status(net); |
55d7de9d | 1339 | |
bdfba55e WH |
1340 | buf &= LAN88XX_EXT_MODE_CTRL_MDIX_MASK_; |
1341 | if (buf == LAN88XX_EXT_MODE_CTRL_AUTO_MDIX_) { | |
55d7de9d WH |
1342 | cmd->eth_tp_mdix = ETH_TP_MDI_AUTO; |
1343 | cmd->eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO; | |
bdfba55e | 1344 | } else if (buf == LAN88XX_EXT_MODE_CTRL_MDI_) { |
55d7de9d WH |
1345 | cmd->eth_tp_mdix = ETH_TP_MDI; |
1346 | cmd->eth_tp_mdix_ctrl = ETH_TP_MDI; | |
bdfba55e | 1347 | } else if (buf == LAN88XX_EXT_MODE_CTRL_MDI_X_) { |
55d7de9d WH |
1348 | cmd->eth_tp_mdix = ETH_TP_MDI_X; |
1349 | cmd->eth_tp_mdix_ctrl = ETH_TP_MDI_X; | |
1350 | } | |
1351 | ||
1352 | usb_autopm_put_interface(dev->intf); | |
1353 | ||
1354 | return ret; | |
1355 | } | |
1356 | ||
1357 | static int lan78xx_set_settings(struct net_device *net, struct ethtool_cmd *cmd) | |
1358 | { | |
1359 | struct lan78xx_net *dev = netdev_priv(net); | |
ce85e13a | 1360 | struct phy_device *phydev = net->phydev; |
55d7de9d WH |
1361 | int ret = 0; |
1362 | int temp; | |
1363 | ||
55d7de9d WH |
1364 | ret = usb_autopm_get_interface(dev->intf); |
1365 | if (ret < 0) | |
1366 | return ret; | |
1367 | ||
1368 | if (dev->mdix_ctrl != cmd->eth_tp_mdix_ctrl) { | |
758c5c11 | 1369 | lan78xx_set_mdix_status(net, cmd->eth_tp_mdix_ctrl); |
55d7de9d WH |
1370 | } |
1371 | ||
1372 | /* change speed & duplex */ | |
ce85e13a | 1373 | ret = phy_ethtool_sset(phydev, cmd); |
55d7de9d WH |
1374 | |
1375 | if (!cmd->autoneg) { | |
1376 | /* force link down */ | |
ce85e13a WH |
1377 | temp = phy_read(phydev, MII_BMCR); |
1378 | phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK); | |
55d7de9d | 1379 | mdelay(1); |
ce85e13a | 1380 | phy_write(phydev, MII_BMCR, temp); |
55d7de9d WH |
1381 | } |
1382 | ||
1383 | usb_autopm_put_interface(dev->intf); | |
1384 | ||
1385 | return ret; | |
1386 | } | |
1387 | ||
1388 | static const struct ethtool_ops lan78xx_ethtool_ops = { | |
1389 | .get_link = lan78xx_get_link, | |
1390 | .nway_reset = lan78xx_nway_reset, | |
1391 | .get_drvinfo = lan78xx_get_drvinfo, | |
1392 | .get_msglevel = lan78xx_get_msglevel, | |
1393 | .set_msglevel = lan78xx_set_msglevel, | |
1394 | .get_settings = lan78xx_get_settings, | |
1395 | .set_settings = lan78xx_set_settings, | |
1396 | .get_eeprom_len = lan78xx_ethtool_get_eeprom_len, | |
1397 | .get_eeprom = lan78xx_ethtool_get_eeprom, | |
1398 | .set_eeprom = lan78xx_ethtool_set_eeprom, | |
1399 | .get_ethtool_stats = lan78xx_get_stats, | |
1400 | .get_sset_count = lan78xx_get_sset_count, | |
1401 | .get_strings = lan78xx_get_strings, | |
1402 | .get_wol = lan78xx_get_wol, | |
1403 | .set_wol = lan78xx_set_wol, | |
1404 | .get_eee = lan78xx_get_eee, | |
1405 | .set_eee = lan78xx_set_eee, | |
1406 | }; | |
1407 | ||
1408 | static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd) | |
1409 | { | |
55d7de9d WH |
1410 | if (!netif_running(netdev)) |
1411 | return -EINVAL; | |
1412 | ||
ce85e13a | 1413 | return phy_mii_ioctl(netdev->phydev, rq, cmd); |
55d7de9d WH |
1414 | } |
1415 | ||
1416 | static void lan78xx_init_mac_address(struct lan78xx_net *dev) | |
1417 | { | |
1418 | u32 addr_lo, addr_hi; | |
1419 | int ret; | |
1420 | u8 addr[6]; | |
1421 | ||
1422 | ret = lan78xx_read_reg(dev, RX_ADDRL, &addr_lo); | |
1423 | ret = lan78xx_read_reg(dev, RX_ADDRH, &addr_hi); | |
1424 | ||
1425 | addr[0] = addr_lo & 0xFF; | |
1426 | addr[1] = (addr_lo >> 8) & 0xFF; | |
1427 | addr[2] = (addr_lo >> 16) & 0xFF; | |
1428 | addr[3] = (addr_lo >> 24) & 0xFF; | |
1429 | addr[4] = addr_hi & 0xFF; | |
1430 | addr[5] = (addr_hi >> 8) & 0xFF; | |
1431 | ||
1432 | if (!is_valid_ether_addr(addr)) { | |
1433 | /* reading mac address from EEPROM or OTP */ | |
1434 | if ((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, | |
1435 | addr) == 0) || | |
1436 | (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, ETH_ALEN, | |
1437 | addr) == 0)) { | |
1438 | if (is_valid_ether_addr(addr)) { | |
1439 | /* eeprom values are valid so use them */ | |
1440 | netif_dbg(dev, ifup, dev->net, | |
1441 | "MAC address read from EEPROM"); | |
1442 | } else { | |
1443 | /* generate random MAC */ | |
1444 | random_ether_addr(addr); | |
1445 | netif_dbg(dev, ifup, dev->net, | |
1446 | "MAC address set to random addr"); | |
1447 | } | |
1448 | ||
1449 | addr_lo = addr[0] | (addr[1] << 8) | | |
1450 | (addr[2] << 16) | (addr[3] << 24); | |
1451 | addr_hi = addr[4] | (addr[5] << 8); | |
1452 | ||
1453 | ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); | |
1454 | ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); | |
1455 | } else { | |
1456 | /* generate random MAC */ | |
1457 | random_ether_addr(addr); | |
1458 | netif_dbg(dev, ifup, dev->net, | |
1459 | "MAC address set to random addr"); | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo); | |
1464 | ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); | |
1465 | ||
1466 | ether_addr_copy(dev->net->dev_addr, addr); | |
1467 | } | |
1468 | ||
ce85e13a WH |
1469 | /* MDIO read and write wrappers for phylib */ |
1470 | static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx) | |
1471 | { | |
1472 | struct lan78xx_net *dev = bus->priv; | |
1473 | u32 val, addr; | |
1474 | int ret; | |
1475 | ||
1476 | ret = usb_autopm_get_interface(dev->intf); | |
1477 | if (ret < 0) | |
1478 | return ret; | |
1479 | ||
1480 | mutex_lock(&dev->phy_mutex); | |
1481 | ||
1482 | /* confirm MII not busy */ | |
1483 | ret = lan78xx_phy_wait_not_busy(dev); | |
1484 | if (ret < 0) | |
1485 | goto done; | |
1486 | ||
1487 | /* set the address, index & direction (read from PHY) */ | |
1488 | addr = mii_access(phy_id, idx, MII_READ); | |
1489 | ret = lan78xx_write_reg(dev, MII_ACC, addr); | |
1490 | ||
1491 | ret = lan78xx_phy_wait_not_busy(dev); | |
1492 | if (ret < 0) | |
1493 | goto done; | |
1494 | ||
1495 | ret = lan78xx_read_reg(dev, MII_DATA, &val); | |
1496 | ||
1497 | ret = (int)(val & 0xFFFF); | |
1498 | ||
1499 | done: | |
1500 | mutex_unlock(&dev->phy_mutex); | |
1501 | usb_autopm_put_interface(dev->intf); | |
1502 | return ret; | |
1503 | } | |
1504 | ||
1505 | static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx, | |
1506 | u16 regval) | |
1507 | { | |
1508 | struct lan78xx_net *dev = bus->priv; | |
1509 | u32 val, addr; | |
1510 | int ret; | |
1511 | ||
1512 | ret = usb_autopm_get_interface(dev->intf); | |
1513 | if (ret < 0) | |
1514 | return ret; | |
1515 | ||
1516 | mutex_lock(&dev->phy_mutex); | |
1517 | ||
1518 | /* confirm MII not busy */ | |
1519 | ret = lan78xx_phy_wait_not_busy(dev); | |
1520 | if (ret < 0) | |
1521 | goto done; | |
1522 | ||
1523 | val = (u32)regval; | |
1524 | ret = lan78xx_write_reg(dev, MII_DATA, val); | |
1525 | ||
1526 | /* set the address, index & direction (write to PHY) */ | |
1527 | addr = mii_access(phy_id, idx, MII_WRITE); | |
1528 | ret = lan78xx_write_reg(dev, MII_ACC, addr); | |
1529 | ||
1530 | ret = lan78xx_phy_wait_not_busy(dev); | |
1531 | if (ret < 0) | |
1532 | goto done; | |
1533 | ||
1534 | done: | |
1535 | mutex_unlock(&dev->phy_mutex); | |
1536 | usb_autopm_put_interface(dev->intf); | |
1537 | return 0; | |
1538 | } | |
1539 | ||
1540 | static int lan78xx_mdio_init(struct lan78xx_net *dev) | |
55d7de9d | 1541 | { |
ce85e13a | 1542 | int ret; |
ce85e13a WH |
1543 | |
1544 | dev->mdiobus = mdiobus_alloc(); | |
1545 | if (!dev->mdiobus) { | |
1546 | netdev_err(dev->net, "can't allocate MDIO bus\n"); | |
1547 | return -ENOMEM; | |
1548 | } | |
1549 | ||
1550 | dev->mdiobus->priv = (void *)dev; | |
1551 | dev->mdiobus->read = lan78xx_mdiobus_read; | |
1552 | dev->mdiobus->write = lan78xx_mdiobus_write; | |
1553 | dev->mdiobus->name = "lan78xx-mdiobus"; | |
1554 | ||
1555 | snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d", | |
1556 | dev->udev->bus->busnum, dev->udev->devnum); | |
1557 | ||
ce85e13a WH |
1558 | switch (dev->devid & ID_REV_CHIP_ID_MASK_) { |
1559 | case 0x78000000: | |
1560 | case 0x78500000: | |
1561 | /* set to internal PHY id */ | |
1562 | dev->mdiobus->phy_mask = ~(1 << 1); | |
1563 | break; | |
1564 | } | |
1565 | ||
1566 | ret = mdiobus_register(dev->mdiobus); | |
1567 | if (ret) { | |
1568 | netdev_err(dev->net, "can't register MDIO bus\n"); | |
e7f4dc35 | 1569 | goto exit1; |
ce85e13a WH |
1570 | } |
1571 | ||
1572 | netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id); | |
1573 | return 0; | |
ce85e13a WH |
1574 | exit1: |
1575 | mdiobus_free(dev->mdiobus); | |
1576 | return ret; | |
1577 | } | |
1578 | ||
1579 | static void lan78xx_remove_mdio(struct lan78xx_net *dev) | |
1580 | { | |
1581 | mdiobus_unregister(dev->mdiobus); | |
ce85e13a WH |
1582 | mdiobus_free(dev->mdiobus); |
1583 | } | |
1584 | ||
1585 | static void lan78xx_link_status_change(struct net_device *net) | |
1586 | { | |
1587 | /* nothing to do */ | |
55d7de9d WH |
1588 | } |
1589 | ||
1590 | static int lan78xx_phy_init(struct lan78xx_net *dev) | |
1591 | { | |
ce85e13a WH |
1592 | int ret; |
1593 | struct phy_device *phydev = dev->net->phydev; | |
55d7de9d | 1594 | |
ce85e13a WH |
1595 | phydev = phy_find_first(dev->mdiobus); |
1596 | if (!phydev) { | |
1597 | netdev_err(dev->net, "no PHY found\n"); | |
1598 | return -EIO; | |
1599 | } | |
55d7de9d | 1600 | |
e4953910 WH |
1601 | /* Enable PHY interrupts. |
1602 | * We handle our own interrupt | |
1603 | */ | |
1604 | ret = phy_read(phydev, LAN88XX_INT_STS); | |
1605 | ret = phy_write(phydev, LAN88XX_INT_MASK, | |
1606 | LAN88XX_INT_MASK_MDINTPIN_EN_ | | |
1607 | LAN88XX_INT_MASK_LINK_CHANGE_); | |
1608 | ||
1609 | phydev->irq = PHY_IGNORE_INTERRUPT; | |
1610 | ||
ce85e13a WH |
1611 | ret = phy_connect_direct(dev->net, phydev, |
1612 | lan78xx_link_status_change, | |
1613 | PHY_INTERFACE_MODE_GMII); | |
1614 | if (ret) { | |
1615 | netdev_err(dev->net, "can't attach PHY to %s\n", | |
1616 | dev->mdiobus->id); | |
1617 | return -EIO; | |
1618 | } | |
55d7de9d WH |
1619 | |
1620 | /* set to AUTOMDIX */ | |
758c5c11 | 1621 | lan78xx_set_mdix_status(dev->net, ETH_TP_MDI_AUTO); |
55d7de9d | 1622 | |
ce85e13a WH |
1623 | /* MAC doesn't support 1000T Half */ |
1624 | phydev->supported &= ~SUPPORTED_1000baseT_Half; | |
1625 | phydev->supported |= (SUPPORTED_10baseT_Half | | |
1626 | SUPPORTED_10baseT_Full | | |
1627 | SUPPORTED_100baseT_Half | | |
1628 | SUPPORTED_100baseT_Full | | |
1629 | SUPPORTED_1000baseT_Full | | |
1630 | SUPPORTED_Pause | SUPPORTED_Asym_Pause); | |
1631 | genphy_config_aneg(phydev); | |
1632 | ||
ce85e13a | 1633 | phy_start(phydev); |
55d7de9d WH |
1634 | |
1635 | netif_dbg(dev, ifup, dev->net, "phy initialised successfully"); | |
1636 | ||
1637 | return 0; | |
1638 | } | |
1639 | ||
1640 | static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size) | |
1641 | { | |
1642 | int ret = 0; | |
1643 | u32 buf; | |
1644 | bool rxenabled; | |
1645 | ||
1646 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); | |
1647 | ||
1648 | rxenabled = ((buf & MAC_RX_RXEN_) != 0); | |
1649 | ||
1650 | if (rxenabled) { | |
1651 | buf &= ~MAC_RX_RXEN_; | |
1652 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
1653 | } | |
1654 | ||
1655 | /* add 4 to size for FCS */ | |
1656 | buf &= ~MAC_RX_MAX_SIZE_MASK_; | |
1657 | buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_); | |
1658 | ||
1659 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
1660 | ||
1661 | if (rxenabled) { | |
1662 | buf |= MAC_RX_RXEN_; | |
1663 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
1664 | } | |
1665 | ||
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q) | |
1670 | { | |
1671 | struct sk_buff *skb; | |
1672 | unsigned long flags; | |
1673 | int count = 0; | |
1674 | ||
1675 | spin_lock_irqsave(&q->lock, flags); | |
1676 | while (!skb_queue_empty(q)) { | |
1677 | struct skb_data *entry; | |
1678 | struct urb *urb; | |
1679 | int ret; | |
1680 | ||
1681 | skb_queue_walk(q, skb) { | |
1682 | entry = (struct skb_data *)skb->cb; | |
1683 | if (entry->state != unlink_start) | |
1684 | goto found; | |
1685 | } | |
1686 | break; | |
1687 | found: | |
1688 | entry->state = unlink_start; | |
1689 | urb = entry->urb; | |
1690 | ||
1691 | /* Get reference count of the URB to avoid it to be | |
1692 | * freed during usb_unlink_urb, which may trigger | |
1693 | * use-after-free problem inside usb_unlink_urb since | |
1694 | * usb_unlink_urb is always racing with .complete | |
1695 | * handler(include defer_bh). | |
1696 | */ | |
1697 | usb_get_urb(urb); | |
1698 | spin_unlock_irqrestore(&q->lock, flags); | |
1699 | /* during some PM-driven resume scenarios, | |
1700 | * these (async) unlinks complete immediately | |
1701 | */ | |
1702 | ret = usb_unlink_urb(urb); | |
1703 | if (ret != -EINPROGRESS && ret != 0) | |
1704 | netdev_dbg(dev->net, "unlink urb err, %d\n", ret); | |
1705 | else | |
1706 | count++; | |
1707 | usb_put_urb(urb); | |
1708 | spin_lock_irqsave(&q->lock, flags); | |
1709 | } | |
1710 | spin_unlock_irqrestore(&q->lock, flags); | |
1711 | return count; | |
1712 | } | |
1713 | ||
1714 | static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu) | |
1715 | { | |
1716 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1717 | int ll_mtu = new_mtu + netdev->hard_header_len; | |
1718 | int old_hard_mtu = dev->hard_mtu; | |
1719 | int old_rx_urb_size = dev->rx_urb_size; | |
1720 | int ret; | |
1721 | ||
1722 | if (new_mtu > MAX_SINGLE_PACKET_SIZE) | |
1723 | return -EINVAL; | |
1724 | ||
1725 | if (new_mtu <= 0) | |
1726 | return -EINVAL; | |
1727 | /* no second zero-length packet read wanted after mtu-sized packets */ | |
1728 | if ((ll_mtu % dev->maxpacket) == 0) | |
1729 | return -EDOM; | |
1730 | ||
1731 | ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); | |
1732 | ||
1733 | netdev->mtu = new_mtu; | |
1734 | ||
1735 | dev->hard_mtu = netdev->mtu + netdev->hard_header_len; | |
1736 | if (dev->rx_urb_size == old_hard_mtu) { | |
1737 | dev->rx_urb_size = dev->hard_mtu; | |
1738 | if (dev->rx_urb_size > old_rx_urb_size) { | |
1739 | if (netif_running(dev->net)) { | |
1740 | unlink_urbs(dev, &dev->rxq); | |
1741 | tasklet_schedule(&dev->bh); | |
1742 | } | |
1743 | } | |
1744 | } | |
1745 | ||
1746 | return 0; | |
1747 | } | |
1748 | ||
1749 | int lan78xx_set_mac_addr(struct net_device *netdev, void *p) | |
1750 | { | |
1751 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1752 | struct sockaddr *addr = p; | |
1753 | u32 addr_lo, addr_hi; | |
1754 | int ret; | |
1755 | ||
1756 | if (netif_running(netdev)) | |
1757 | return -EBUSY; | |
1758 | ||
1759 | if (!is_valid_ether_addr(addr->sa_data)) | |
1760 | return -EADDRNOTAVAIL; | |
1761 | ||
1762 | ether_addr_copy(netdev->dev_addr, addr->sa_data); | |
1763 | ||
1764 | addr_lo = netdev->dev_addr[0] | | |
1765 | netdev->dev_addr[1] << 8 | | |
1766 | netdev->dev_addr[2] << 16 | | |
1767 | netdev->dev_addr[3] << 24; | |
1768 | addr_hi = netdev->dev_addr[4] | | |
1769 | netdev->dev_addr[5] << 8; | |
1770 | ||
1771 | ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); | |
1772 | ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); | |
1773 | ||
1774 | return 0; | |
1775 | } | |
1776 | ||
1777 | /* Enable or disable Rx checksum offload engine */ | |
1778 | static int lan78xx_set_features(struct net_device *netdev, | |
1779 | netdev_features_t features) | |
1780 | { | |
1781 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1782 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1783 | unsigned long flags; | |
1784 | int ret; | |
1785 | ||
1786 | spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); | |
1787 | ||
1788 | if (features & NETIF_F_RXCSUM) { | |
1789 | pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_; | |
1790 | pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_; | |
1791 | } else { | |
1792 | pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_); | |
1793 | pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_); | |
1794 | } | |
1795 | ||
1796 | if (features & NETIF_F_HW_VLAN_CTAG_RX) | |
1797 | pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_; | |
1798 | else | |
1799 | pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_; | |
1800 | ||
1801 | spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); | |
1802 | ||
1803 | ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); | |
1804 | ||
1805 | return 0; | |
1806 | } | |
1807 | ||
1808 | static void lan78xx_deferred_vlan_write(struct work_struct *param) | |
1809 | { | |
1810 | struct lan78xx_priv *pdata = | |
1811 | container_of(param, struct lan78xx_priv, set_vlan); | |
1812 | struct lan78xx_net *dev = pdata->dev; | |
1813 | ||
1814 | lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0, | |
1815 | DP_SEL_VHF_VLAN_LEN, pdata->vlan_table); | |
1816 | } | |
1817 | ||
1818 | static int lan78xx_vlan_rx_add_vid(struct net_device *netdev, | |
1819 | __be16 proto, u16 vid) | |
1820 | { | |
1821 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1822 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1823 | u16 vid_bit_index; | |
1824 | u16 vid_dword_index; | |
1825 | ||
1826 | vid_dword_index = (vid >> 5) & 0x7F; | |
1827 | vid_bit_index = vid & 0x1F; | |
1828 | ||
1829 | pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index); | |
1830 | ||
1831 | /* defer register writes to a sleepable context */ | |
1832 | schedule_work(&pdata->set_vlan); | |
1833 | ||
1834 | return 0; | |
1835 | } | |
1836 | ||
1837 | static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev, | |
1838 | __be16 proto, u16 vid) | |
1839 | { | |
1840 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1841 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1842 | u16 vid_bit_index; | |
1843 | u16 vid_dword_index; | |
1844 | ||
1845 | vid_dword_index = (vid >> 5) & 0x7F; | |
1846 | vid_bit_index = vid & 0x1F; | |
1847 | ||
1848 | pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index); | |
1849 | ||
1850 | /* defer register writes to a sleepable context */ | |
1851 | schedule_work(&pdata->set_vlan); | |
1852 | ||
1853 | return 0; | |
1854 | } | |
1855 | ||
1856 | static void lan78xx_init_ltm(struct lan78xx_net *dev) | |
1857 | { | |
1858 | int ret; | |
1859 | u32 buf; | |
1860 | u32 regs[6] = { 0 }; | |
1861 | ||
1862 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); | |
1863 | if (buf & USB_CFG1_LTM_ENABLE_) { | |
1864 | u8 temp[2]; | |
1865 | /* Get values from EEPROM first */ | |
1866 | if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) { | |
1867 | if (temp[0] == 24) { | |
1868 | ret = lan78xx_read_raw_eeprom(dev, | |
1869 | temp[1] * 2, | |
1870 | 24, | |
1871 | (u8 *)regs); | |
1872 | if (ret < 0) | |
1873 | return; | |
1874 | } | |
1875 | } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) { | |
1876 | if (temp[0] == 24) { | |
1877 | ret = lan78xx_read_raw_otp(dev, | |
1878 | temp[1] * 2, | |
1879 | 24, | |
1880 | (u8 *)regs); | |
1881 | if (ret < 0) | |
1882 | return; | |
1883 | } | |
1884 | } | |
1885 | } | |
1886 | ||
1887 | lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]); | |
1888 | lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]); | |
1889 | lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]); | |
1890 | lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]); | |
1891 | lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]); | |
1892 | lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]); | |
1893 | } | |
1894 | ||
1895 | static int lan78xx_reset(struct lan78xx_net *dev) | |
1896 | { | |
1897 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1898 | u32 buf; | |
1899 | int ret = 0; | |
1900 | unsigned long timeout; | |
1901 | ||
1902 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); | |
1903 | buf |= HW_CFG_LRST_; | |
1904 | ret = lan78xx_write_reg(dev, HW_CFG, buf); | |
1905 | ||
1906 | timeout = jiffies + HZ; | |
1907 | do { | |
1908 | mdelay(1); | |
1909 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); | |
1910 | if (time_after(jiffies, timeout)) { | |
1911 | netdev_warn(dev->net, | |
1912 | "timeout on completion of LiteReset"); | |
1913 | return -EIO; | |
1914 | } | |
1915 | } while (buf & HW_CFG_LRST_); | |
1916 | ||
1917 | lan78xx_init_mac_address(dev); | |
1918 | ||
ce85e13a WH |
1919 | /* save DEVID for later usage */ |
1920 | ret = lan78xx_read_reg(dev, ID_REV, &buf); | |
1921 | dev->devid = buf; | |
1922 | ||
55d7de9d WH |
1923 | /* Respond to the IN token with a NAK */ |
1924 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); | |
1925 | buf |= USB_CFG_BIR_; | |
1926 | ret = lan78xx_write_reg(dev, USB_CFG0, buf); | |
1927 | ||
1928 | /* Init LTM */ | |
1929 | lan78xx_init_ltm(dev); | |
1930 | ||
1931 | dev->net->hard_header_len += TX_OVERHEAD; | |
1932 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; | |
1933 | ||
1934 | if (dev->udev->speed == USB_SPEED_SUPER) { | |
1935 | buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE; | |
1936 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; | |
1937 | dev->rx_qlen = 4; | |
1938 | dev->tx_qlen = 4; | |
1939 | } else if (dev->udev->speed == USB_SPEED_HIGH) { | |
1940 | buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE; | |
1941 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; | |
1942 | dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size; | |
1943 | dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu; | |
1944 | } else { | |
1945 | buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE; | |
1946 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; | |
1947 | dev->rx_qlen = 4; | |
1948 | } | |
1949 | ||
1950 | ret = lan78xx_write_reg(dev, BURST_CAP, buf); | |
1951 | ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); | |
1952 | ||
1953 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); | |
1954 | buf |= HW_CFG_MEF_; | |
1955 | ret = lan78xx_write_reg(dev, HW_CFG, buf); | |
1956 | ||
1957 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); | |
1958 | buf |= USB_CFG_BCE_; | |
1959 | ret = lan78xx_write_reg(dev, USB_CFG0, buf); | |
1960 | ||
1961 | /* set FIFO sizes */ | |
1962 | buf = (MAX_RX_FIFO_SIZE - 512) / 512; | |
1963 | ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf); | |
1964 | ||
1965 | buf = (MAX_TX_FIFO_SIZE - 512) / 512; | |
1966 | ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf); | |
1967 | ||
1968 | ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); | |
1969 | ret = lan78xx_write_reg(dev, FLOW, 0); | |
1970 | ret = lan78xx_write_reg(dev, FCT_FLOW, 0); | |
1971 | ||
1972 | /* Don't need rfe_ctl_lock during initialisation */ | |
1973 | ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); | |
1974 | pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_; | |
1975 | ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); | |
1976 | ||
1977 | /* Enable or disable checksum offload engines */ | |
1978 | lan78xx_set_features(dev->net, dev->net->features); | |
1979 | ||
1980 | lan78xx_set_multicast(dev->net); | |
1981 | ||
1982 | /* reset PHY */ | |
1983 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
1984 | buf |= PMT_CTL_PHY_RST_; | |
1985 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
1986 | ||
1987 | timeout = jiffies + HZ; | |
1988 | do { | |
1989 | mdelay(1); | |
1990 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
1991 | if (time_after(jiffies, timeout)) { | |
1992 | netdev_warn(dev->net, "timeout waiting for PHY Reset"); | |
1993 | return -EIO; | |
1994 | } | |
6c595b03 | 1995 | } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_)); |
55d7de9d | 1996 | |
55d7de9d | 1997 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); |
55d7de9d | 1998 | buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; |
55d7de9d WH |
1999 | ret = lan78xx_write_reg(dev, MAC_CR, buf); |
2000 | ||
55d7de9d WH |
2001 | /* enable PHY interrupts */ |
2002 | ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf); | |
2003 | buf |= INT_ENP_PHY_INT; | |
2004 | ret = lan78xx_write_reg(dev, INT_EP_CTL, buf); | |
2005 | ||
2006 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); | |
2007 | buf |= MAC_TX_TXEN_; | |
2008 | ret = lan78xx_write_reg(dev, MAC_TX, buf); | |
2009 | ||
2010 | ret = lan78xx_read_reg(dev, FCT_TX_CTL, &buf); | |
2011 | buf |= FCT_TX_CTL_EN_; | |
2012 | ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf); | |
2013 | ||
2014 | ret = lan78xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); | |
2015 | ||
2016 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); | |
2017 | buf |= MAC_RX_RXEN_; | |
2018 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
2019 | ||
2020 | ret = lan78xx_read_reg(dev, FCT_RX_CTL, &buf); | |
2021 | buf |= FCT_RX_CTL_EN_; | |
2022 | ret = lan78xx_write_reg(dev, FCT_RX_CTL, buf); | |
2023 | ||
55d7de9d WH |
2024 | return 0; |
2025 | } | |
2026 | ||
2027 | static int lan78xx_open(struct net_device *net) | |
2028 | { | |
2029 | struct lan78xx_net *dev = netdev_priv(net); | |
2030 | int ret; | |
2031 | ||
2032 | ret = usb_autopm_get_interface(dev->intf); | |
2033 | if (ret < 0) | |
2034 | goto out; | |
2035 | ||
2036 | ret = lan78xx_reset(dev); | |
2037 | if (ret < 0) | |
2038 | goto done; | |
2039 | ||
ce85e13a WH |
2040 | ret = lan78xx_phy_init(dev); |
2041 | if (ret < 0) | |
2042 | goto done; | |
2043 | ||
55d7de9d WH |
2044 | /* for Link Check */ |
2045 | if (dev->urb_intr) { | |
2046 | ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL); | |
2047 | if (ret < 0) { | |
2048 | netif_err(dev, ifup, dev->net, | |
2049 | "intr submit %d\n", ret); | |
2050 | goto done; | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | set_bit(EVENT_DEV_OPEN, &dev->flags); | |
2055 | ||
2056 | netif_start_queue(net); | |
2057 | ||
2058 | dev->link_on = false; | |
2059 | ||
2060 | lan78xx_defer_kevent(dev, EVENT_LINK_RESET); | |
2061 | done: | |
2062 | usb_autopm_put_interface(dev->intf); | |
2063 | ||
2064 | out: | |
2065 | return ret; | |
2066 | } | |
2067 | ||
2068 | static void lan78xx_terminate_urbs(struct lan78xx_net *dev) | |
2069 | { | |
2070 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup); | |
2071 | DECLARE_WAITQUEUE(wait, current); | |
2072 | int temp; | |
2073 | ||
2074 | /* ensure there are no more active urbs */ | |
2075 | add_wait_queue(&unlink_wakeup, &wait); | |
2076 | set_current_state(TASK_UNINTERRUPTIBLE); | |
2077 | dev->wait = &unlink_wakeup; | |
2078 | temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq); | |
2079 | ||
2080 | /* maybe wait for deletions to finish. */ | |
2081 | while (!skb_queue_empty(&dev->rxq) && | |
2082 | !skb_queue_empty(&dev->txq) && | |
2083 | !skb_queue_empty(&dev->done)) { | |
2084 | schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS)); | |
2085 | set_current_state(TASK_UNINTERRUPTIBLE); | |
2086 | netif_dbg(dev, ifdown, dev->net, | |
2087 | "waited for %d urb completions\n", temp); | |
2088 | } | |
2089 | set_current_state(TASK_RUNNING); | |
2090 | dev->wait = NULL; | |
2091 | remove_wait_queue(&unlink_wakeup, &wait); | |
2092 | } | |
2093 | ||
2094 | int lan78xx_stop(struct net_device *net) | |
2095 | { | |
2096 | struct lan78xx_net *dev = netdev_priv(net); | |
2097 | ||
ce85e13a WH |
2098 | phy_stop(net->phydev); |
2099 | phy_disconnect(net->phydev); | |
2100 | net->phydev = NULL; | |
2101 | ||
55d7de9d WH |
2102 | clear_bit(EVENT_DEV_OPEN, &dev->flags); |
2103 | netif_stop_queue(net); | |
2104 | ||
2105 | netif_info(dev, ifdown, dev->net, | |
2106 | "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n", | |
2107 | net->stats.rx_packets, net->stats.tx_packets, | |
2108 | net->stats.rx_errors, net->stats.tx_errors); | |
2109 | ||
2110 | lan78xx_terminate_urbs(dev); | |
2111 | ||
2112 | usb_kill_urb(dev->urb_intr); | |
2113 | ||
2114 | skb_queue_purge(&dev->rxq_pause); | |
2115 | ||
2116 | /* deferred work (task, timer, softirq) must also stop. | |
2117 | * can't flush_scheduled_work() until we drop rtnl (later), | |
2118 | * else workers could deadlock; so make workers a NOP. | |
2119 | */ | |
2120 | dev->flags = 0; | |
2121 | cancel_delayed_work_sync(&dev->wq); | |
2122 | tasklet_kill(&dev->bh); | |
2123 | ||
2124 | usb_autopm_put_interface(dev->intf); | |
2125 | ||
2126 | return 0; | |
2127 | } | |
2128 | ||
2129 | static int lan78xx_linearize(struct sk_buff *skb) | |
2130 | { | |
2131 | return skb_linearize(skb); | |
2132 | } | |
2133 | ||
2134 | static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev, | |
2135 | struct sk_buff *skb, gfp_t flags) | |
2136 | { | |
2137 | u32 tx_cmd_a, tx_cmd_b; | |
2138 | ||
2139 | if (skb_headroom(skb) < TX_OVERHEAD) { | |
2140 | struct sk_buff *skb2; | |
2141 | ||
2142 | skb2 = skb_copy_expand(skb, TX_OVERHEAD, 0, flags); | |
2143 | dev_kfree_skb_any(skb); | |
2144 | skb = skb2; | |
2145 | if (!skb) | |
2146 | return NULL; | |
2147 | } | |
2148 | ||
2149 | if (lan78xx_linearize(skb) < 0) | |
2150 | return NULL; | |
2151 | ||
2152 | tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_; | |
2153 | ||
2154 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2155 | tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_; | |
2156 | ||
2157 | tx_cmd_b = 0; | |
2158 | if (skb_is_gso(skb)) { | |
2159 | u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_); | |
2160 | ||
2161 | tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_; | |
2162 | ||
2163 | tx_cmd_a |= TX_CMD_A_LSO_; | |
2164 | } | |
2165 | ||
2166 | if (skb_vlan_tag_present(skb)) { | |
2167 | tx_cmd_a |= TX_CMD_A_IVTG_; | |
2168 | tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_; | |
2169 | } | |
2170 | ||
2171 | skb_push(skb, 4); | |
2172 | cpu_to_le32s(&tx_cmd_b); | |
2173 | memcpy(skb->data, &tx_cmd_b, 4); | |
2174 | ||
2175 | skb_push(skb, 4); | |
2176 | cpu_to_le32s(&tx_cmd_a); | |
2177 | memcpy(skb->data, &tx_cmd_a, 4); | |
2178 | ||
2179 | return skb; | |
2180 | } | |
2181 | ||
2182 | static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb, | |
2183 | struct sk_buff_head *list, enum skb_state state) | |
2184 | { | |
2185 | unsigned long flags; | |
2186 | enum skb_state old_state; | |
2187 | struct skb_data *entry = (struct skb_data *)skb->cb; | |
2188 | ||
2189 | spin_lock_irqsave(&list->lock, flags); | |
2190 | old_state = entry->state; | |
2191 | entry->state = state; | |
55d7de9d WH |
2192 | |
2193 | __skb_unlink(skb, list); | |
2194 | spin_unlock(&list->lock); | |
2195 | spin_lock(&dev->done.lock); | |
55d7de9d WH |
2196 | |
2197 | __skb_queue_tail(&dev->done, skb); | |
2198 | if (skb_queue_len(&dev->done) == 1) | |
2199 | tasklet_schedule(&dev->bh); | |
2200 | spin_unlock_irqrestore(&dev->done.lock, flags); | |
2201 | ||
2202 | return old_state; | |
2203 | } | |
2204 | ||
2205 | static void tx_complete(struct urb *urb) | |
2206 | { | |
2207 | struct sk_buff *skb = (struct sk_buff *)urb->context; | |
2208 | struct skb_data *entry = (struct skb_data *)skb->cb; | |
2209 | struct lan78xx_net *dev = entry->dev; | |
2210 | ||
2211 | if (urb->status == 0) { | |
2212 | dev->net->stats.tx_packets++; | |
2213 | dev->net->stats.tx_bytes += entry->length; | |
2214 | } else { | |
2215 | dev->net->stats.tx_errors++; | |
2216 | ||
2217 | switch (urb->status) { | |
2218 | case -EPIPE: | |
2219 | lan78xx_defer_kevent(dev, EVENT_TX_HALT); | |
2220 | break; | |
2221 | ||
2222 | /* software-driven interface shutdown */ | |
2223 | case -ECONNRESET: | |
2224 | case -ESHUTDOWN: | |
2225 | break; | |
2226 | ||
2227 | case -EPROTO: | |
2228 | case -ETIME: | |
2229 | case -EILSEQ: | |
2230 | netif_stop_queue(dev->net); | |
2231 | break; | |
2232 | default: | |
2233 | netif_dbg(dev, tx_err, dev->net, | |
2234 | "tx err %d\n", entry->urb->status); | |
2235 | break; | |
2236 | } | |
2237 | } | |
2238 | ||
2239 | usb_autopm_put_interface_async(dev->intf); | |
2240 | ||
81c38e81 | 2241 | defer_bh(dev, skb, &dev->txq, tx_done); |
55d7de9d WH |
2242 | } |
2243 | ||
2244 | static void lan78xx_queue_skb(struct sk_buff_head *list, | |
2245 | struct sk_buff *newsk, enum skb_state state) | |
2246 | { | |
2247 | struct skb_data *entry = (struct skb_data *)newsk->cb; | |
2248 | ||
2249 | __skb_queue_tail(list, newsk); | |
2250 | entry->state = state; | |
2251 | } | |
2252 | ||
2253 | netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) | |
2254 | { | |
2255 | struct lan78xx_net *dev = netdev_priv(net); | |
81c38e81 | 2256 | struct sk_buff *skb2 = NULL; |
55d7de9d | 2257 | |
81c38e81 | 2258 | if (skb) { |
55d7de9d | 2259 | skb_tx_timestamp(skb); |
81c38e81 WH |
2260 | skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC); |
2261 | } | |
55d7de9d | 2262 | |
81c38e81 WH |
2263 | if (skb2) { |
2264 | skb_queue_tail(&dev->txq_pend, skb2); | |
55d7de9d | 2265 | |
4b2a4a96 WH |
2266 | /* throttle TX patch at slower than SUPER SPEED USB */ |
2267 | if ((dev->udev->speed < USB_SPEED_SUPER) && | |
2268 | (skb_queue_len(&dev->txq_pend) > 10)) | |
55d7de9d WH |
2269 | netif_stop_queue(net); |
2270 | } else { | |
2271 | netif_dbg(dev, tx_err, dev->net, | |
2272 | "lan78xx_tx_prep return NULL\n"); | |
2273 | dev->net->stats.tx_errors++; | |
2274 | dev->net->stats.tx_dropped++; | |
2275 | } | |
2276 | ||
2277 | tasklet_schedule(&dev->bh); | |
2278 | ||
2279 | return NETDEV_TX_OK; | |
2280 | } | |
2281 | ||
2282 | int lan78xx_get_endpoints(struct lan78xx_net *dev, struct usb_interface *intf) | |
2283 | { | |
2284 | int tmp; | |
2285 | struct usb_host_interface *alt = NULL; | |
2286 | struct usb_host_endpoint *in = NULL, *out = NULL; | |
2287 | struct usb_host_endpoint *status = NULL; | |
2288 | ||
2289 | for (tmp = 0; tmp < intf->num_altsetting; tmp++) { | |
2290 | unsigned ep; | |
2291 | ||
2292 | in = NULL; | |
2293 | out = NULL; | |
2294 | status = NULL; | |
2295 | alt = intf->altsetting + tmp; | |
2296 | ||
2297 | for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { | |
2298 | struct usb_host_endpoint *e; | |
2299 | int intr = 0; | |
2300 | ||
2301 | e = alt->endpoint + ep; | |
2302 | switch (e->desc.bmAttributes) { | |
2303 | case USB_ENDPOINT_XFER_INT: | |
2304 | if (!usb_endpoint_dir_in(&e->desc)) | |
2305 | continue; | |
2306 | intr = 1; | |
2307 | /* FALLTHROUGH */ | |
2308 | case USB_ENDPOINT_XFER_BULK: | |
2309 | break; | |
2310 | default: | |
2311 | continue; | |
2312 | } | |
2313 | if (usb_endpoint_dir_in(&e->desc)) { | |
2314 | if (!intr && !in) | |
2315 | in = e; | |
2316 | else if (intr && !status) | |
2317 | status = e; | |
2318 | } else { | |
2319 | if (!out) | |
2320 | out = e; | |
2321 | } | |
2322 | } | |
2323 | if (in && out) | |
2324 | break; | |
2325 | } | |
2326 | if (!alt || !in || !out) | |
2327 | return -EINVAL; | |
2328 | ||
2329 | dev->pipe_in = usb_rcvbulkpipe(dev->udev, | |
2330 | in->desc.bEndpointAddress & | |
2331 | USB_ENDPOINT_NUMBER_MASK); | |
2332 | dev->pipe_out = usb_sndbulkpipe(dev->udev, | |
2333 | out->desc.bEndpointAddress & | |
2334 | USB_ENDPOINT_NUMBER_MASK); | |
2335 | dev->ep_intr = status; | |
2336 | ||
2337 | return 0; | |
2338 | } | |
2339 | ||
2340 | static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf) | |
2341 | { | |
2342 | struct lan78xx_priv *pdata = NULL; | |
2343 | int ret; | |
2344 | int i; | |
2345 | ||
2346 | ret = lan78xx_get_endpoints(dev, intf); | |
2347 | ||
2348 | dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL); | |
2349 | ||
2350 | pdata = (struct lan78xx_priv *)(dev->data[0]); | |
2351 | if (!pdata) { | |
2352 | netdev_warn(dev->net, "Unable to allocate lan78xx_priv"); | |
2353 | return -ENOMEM; | |
2354 | } | |
2355 | ||
2356 | pdata->dev = dev; | |
2357 | ||
2358 | spin_lock_init(&pdata->rfe_ctl_lock); | |
2359 | mutex_init(&pdata->dataport_mutex); | |
2360 | ||
2361 | INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write); | |
2362 | ||
2363 | for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++) | |
2364 | pdata->vlan_table[i] = 0; | |
2365 | ||
2366 | INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write); | |
2367 | ||
2368 | dev->net->features = 0; | |
2369 | ||
2370 | if (DEFAULT_TX_CSUM_ENABLE) | |
2371 | dev->net->features |= NETIF_F_HW_CSUM; | |
2372 | ||
2373 | if (DEFAULT_RX_CSUM_ENABLE) | |
2374 | dev->net->features |= NETIF_F_RXCSUM; | |
2375 | ||
2376 | if (DEFAULT_TSO_CSUM_ENABLE) | |
2377 | dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG; | |
2378 | ||
2379 | dev->net->hw_features = dev->net->features; | |
2380 | ||
2381 | /* Init all registers */ | |
2382 | ret = lan78xx_reset(dev); | |
2383 | ||
ce85e13a WH |
2384 | lan78xx_mdio_init(dev); |
2385 | ||
55d7de9d WH |
2386 | dev->net->flags |= IFF_MULTICAST; |
2387 | ||
2388 | pdata->wol = WAKE_MAGIC; | |
2389 | ||
2390 | return 0; | |
2391 | } | |
2392 | ||
2393 | static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf) | |
2394 | { | |
2395 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
2396 | ||
ce85e13a WH |
2397 | lan78xx_remove_mdio(dev); |
2398 | ||
55d7de9d WH |
2399 | if (pdata) { |
2400 | netif_dbg(dev, ifdown, dev->net, "free pdata"); | |
2401 | kfree(pdata); | |
2402 | pdata = NULL; | |
2403 | dev->data[0] = 0; | |
2404 | } | |
2405 | } | |
2406 | ||
2407 | static void lan78xx_rx_csum_offload(struct lan78xx_net *dev, | |
2408 | struct sk_buff *skb, | |
2409 | u32 rx_cmd_a, u32 rx_cmd_b) | |
2410 | { | |
2411 | if (!(dev->net->features & NETIF_F_RXCSUM) || | |
2412 | unlikely(rx_cmd_a & RX_CMD_A_ICSM_)) { | |
2413 | skb->ip_summed = CHECKSUM_NONE; | |
2414 | } else { | |
2415 | skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_)); | |
2416 | skb->ip_summed = CHECKSUM_COMPLETE; | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb) | |
2421 | { | |
2422 | int status; | |
2423 | ||
2424 | if (test_bit(EVENT_RX_PAUSED, &dev->flags)) { | |
2425 | skb_queue_tail(&dev->rxq_pause, skb); | |
2426 | return; | |
2427 | } | |
2428 | ||
2429 | skb->protocol = eth_type_trans(skb, dev->net); | |
2430 | dev->net->stats.rx_packets++; | |
2431 | dev->net->stats.rx_bytes += skb->len; | |
2432 | ||
2433 | netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n", | |
2434 | skb->len + sizeof(struct ethhdr), skb->protocol); | |
2435 | memset(skb->cb, 0, sizeof(struct skb_data)); | |
2436 | ||
2437 | if (skb_defer_rx_timestamp(skb)) | |
2438 | return; | |
2439 | ||
2440 | status = netif_rx(skb); | |
2441 | if (status != NET_RX_SUCCESS) | |
2442 | netif_dbg(dev, rx_err, dev->net, | |
2443 | "netif_rx status %d\n", status); | |
2444 | } | |
2445 | ||
2446 | static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb) | |
2447 | { | |
2448 | if (skb->len < dev->net->hard_header_len) | |
2449 | return 0; | |
2450 | ||
2451 | while (skb->len > 0) { | |
2452 | u32 rx_cmd_a, rx_cmd_b, align_count, size; | |
2453 | u16 rx_cmd_c; | |
2454 | struct sk_buff *skb2; | |
2455 | unsigned char *packet; | |
2456 | ||
2457 | memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a)); | |
2458 | le32_to_cpus(&rx_cmd_a); | |
2459 | skb_pull(skb, sizeof(rx_cmd_a)); | |
2460 | ||
2461 | memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b)); | |
2462 | le32_to_cpus(&rx_cmd_b); | |
2463 | skb_pull(skb, sizeof(rx_cmd_b)); | |
2464 | ||
2465 | memcpy(&rx_cmd_c, skb->data, sizeof(rx_cmd_c)); | |
2466 | le16_to_cpus(&rx_cmd_c); | |
2467 | skb_pull(skb, sizeof(rx_cmd_c)); | |
2468 | ||
2469 | packet = skb->data; | |
2470 | ||
2471 | /* get the packet length */ | |
2472 | size = (rx_cmd_a & RX_CMD_A_LEN_MASK_); | |
2473 | align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; | |
2474 | ||
2475 | if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) { | |
2476 | netif_dbg(dev, rx_err, dev->net, | |
2477 | "Error rx_cmd_a=0x%08x", rx_cmd_a); | |
2478 | } else { | |
2479 | /* last frame in this batch */ | |
2480 | if (skb->len == size) { | |
2481 | lan78xx_rx_csum_offload(dev, skb, | |
2482 | rx_cmd_a, rx_cmd_b); | |
2483 | ||
2484 | skb_trim(skb, skb->len - 4); /* remove fcs */ | |
2485 | skb->truesize = size + sizeof(struct sk_buff); | |
2486 | ||
2487 | return 1; | |
2488 | } | |
2489 | ||
2490 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
2491 | if (unlikely(!skb2)) { | |
2492 | netdev_warn(dev->net, "Error allocating skb"); | |
2493 | return 0; | |
2494 | } | |
2495 | ||
2496 | skb2->len = size; | |
2497 | skb2->data = packet; | |
2498 | skb_set_tail_pointer(skb2, size); | |
2499 | ||
2500 | lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b); | |
2501 | ||
2502 | skb_trim(skb2, skb2->len - 4); /* remove fcs */ | |
2503 | skb2->truesize = size + sizeof(struct sk_buff); | |
2504 | ||
2505 | lan78xx_skb_return(dev, skb2); | |
2506 | } | |
2507 | ||
2508 | skb_pull(skb, size); | |
2509 | ||
2510 | /* padding bytes before the next frame starts */ | |
2511 | if (skb->len) | |
2512 | skb_pull(skb, align_count); | |
2513 | } | |
2514 | ||
55d7de9d WH |
2515 | return 1; |
2516 | } | |
2517 | ||
2518 | static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb) | |
2519 | { | |
2520 | if (!lan78xx_rx(dev, skb)) { | |
2521 | dev->net->stats.rx_errors++; | |
2522 | goto done; | |
2523 | } | |
2524 | ||
2525 | if (skb->len) { | |
2526 | lan78xx_skb_return(dev, skb); | |
2527 | return; | |
2528 | } | |
2529 | ||
2530 | netif_dbg(dev, rx_err, dev->net, "drop\n"); | |
2531 | dev->net->stats.rx_errors++; | |
2532 | done: | |
2533 | skb_queue_tail(&dev->done, skb); | |
2534 | } | |
2535 | ||
2536 | static void rx_complete(struct urb *urb); | |
2537 | ||
2538 | static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags) | |
2539 | { | |
2540 | struct sk_buff *skb; | |
2541 | struct skb_data *entry; | |
2542 | unsigned long lockflags; | |
2543 | size_t size = dev->rx_urb_size; | |
2544 | int ret = 0; | |
2545 | ||
2546 | skb = netdev_alloc_skb_ip_align(dev->net, size); | |
2547 | if (!skb) { | |
2548 | usb_free_urb(urb); | |
2549 | return -ENOMEM; | |
2550 | } | |
2551 | ||
2552 | entry = (struct skb_data *)skb->cb; | |
2553 | entry->urb = urb; | |
2554 | entry->dev = dev; | |
2555 | entry->length = 0; | |
2556 | ||
2557 | usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in, | |
2558 | skb->data, size, rx_complete, skb); | |
2559 | ||
2560 | spin_lock_irqsave(&dev->rxq.lock, lockflags); | |
2561 | ||
2562 | if (netif_device_present(dev->net) && | |
2563 | netif_running(dev->net) && | |
2564 | !test_bit(EVENT_RX_HALT, &dev->flags) && | |
2565 | !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { | |
2566 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
2567 | switch (ret) { | |
2568 | case 0: | |
2569 | lan78xx_queue_skb(&dev->rxq, skb, rx_start); | |
2570 | break; | |
2571 | case -EPIPE: | |
2572 | lan78xx_defer_kevent(dev, EVENT_RX_HALT); | |
2573 | break; | |
2574 | case -ENODEV: | |
2575 | netif_dbg(dev, ifdown, dev->net, "device gone\n"); | |
2576 | netif_device_detach(dev->net); | |
2577 | break; | |
2578 | case -EHOSTUNREACH: | |
2579 | ret = -ENOLINK; | |
2580 | break; | |
2581 | default: | |
2582 | netif_dbg(dev, rx_err, dev->net, | |
2583 | "rx submit, %d\n", ret); | |
2584 | tasklet_schedule(&dev->bh); | |
2585 | } | |
2586 | } else { | |
2587 | netif_dbg(dev, ifdown, dev->net, "rx: stopped\n"); | |
2588 | ret = -ENOLINK; | |
2589 | } | |
2590 | spin_unlock_irqrestore(&dev->rxq.lock, lockflags); | |
2591 | if (ret) { | |
2592 | dev_kfree_skb_any(skb); | |
2593 | usb_free_urb(urb); | |
2594 | } | |
2595 | return ret; | |
2596 | } | |
2597 | ||
2598 | static void rx_complete(struct urb *urb) | |
2599 | { | |
2600 | struct sk_buff *skb = (struct sk_buff *)urb->context; | |
2601 | struct skb_data *entry = (struct skb_data *)skb->cb; | |
2602 | struct lan78xx_net *dev = entry->dev; | |
2603 | int urb_status = urb->status; | |
2604 | enum skb_state state; | |
2605 | ||
2606 | skb_put(skb, urb->actual_length); | |
2607 | state = rx_done; | |
2608 | entry->urb = NULL; | |
2609 | ||
2610 | switch (urb_status) { | |
2611 | case 0: | |
2612 | if (skb->len < dev->net->hard_header_len) { | |
2613 | state = rx_cleanup; | |
2614 | dev->net->stats.rx_errors++; | |
2615 | dev->net->stats.rx_length_errors++; | |
2616 | netif_dbg(dev, rx_err, dev->net, | |
2617 | "rx length %d\n", skb->len); | |
2618 | } | |
2619 | usb_mark_last_busy(dev->udev); | |
2620 | break; | |
2621 | case -EPIPE: | |
2622 | dev->net->stats.rx_errors++; | |
2623 | lan78xx_defer_kevent(dev, EVENT_RX_HALT); | |
2624 | /* FALLTHROUGH */ | |
2625 | case -ECONNRESET: /* async unlink */ | |
2626 | case -ESHUTDOWN: /* hardware gone */ | |
2627 | netif_dbg(dev, ifdown, dev->net, | |
2628 | "rx shutdown, code %d\n", urb_status); | |
2629 | state = rx_cleanup; | |
2630 | entry->urb = urb; | |
2631 | urb = NULL; | |
2632 | break; | |
2633 | case -EPROTO: | |
2634 | case -ETIME: | |
2635 | case -EILSEQ: | |
2636 | dev->net->stats.rx_errors++; | |
2637 | state = rx_cleanup; | |
2638 | entry->urb = urb; | |
2639 | urb = NULL; | |
2640 | break; | |
2641 | ||
2642 | /* data overrun ... flush fifo? */ | |
2643 | case -EOVERFLOW: | |
2644 | dev->net->stats.rx_over_errors++; | |
2645 | /* FALLTHROUGH */ | |
2646 | ||
2647 | default: | |
2648 | state = rx_cleanup; | |
2649 | dev->net->stats.rx_errors++; | |
2650 | netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status); | |
2651 | break; | |
2652 | } | |
2653 | ||
2654 | state = defer_bh(dev, skb, &dev->rxq, state); | |
2655 | ||
2656 | if (urb) { | |
2657 | if (netif_running(dev->net) && | |
2658 | !test_bit(EVENT_RX_HALT, &dev->flags) && | |
2659 | state != unlink_start) { | |
2660 | rx_submit(dev, urb, GFP_ATOMIC); | |
2661 | return; | |
2662 | } | |
2663 | usb_free_urb(urb); | |
2664 | } | |
2665 | netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n"); | |
2666 | } | |
2667 | ||
2668 | static void lan78xx_tx_bh(struct lan78xx_net *dev) | |
2669 | { | |
2670 | int length; | |
2671 | struct urb *urb = NULL; | |
2672 | struct skb_data *entry; | |
2673 | unsigned long flags; | |
2674 | struct sk_buff_head *tqp = &dev->txq_pend; | |
2675 | struct sk_buff *skb, *skb2; | |
2676 | int ret; | |
2677 | int count, pos; | |
2678 | int skb_totallen, pkt_cnt; | |
2679 | ||
2680 | skb_totallen = 0; | |
2681 | pkt_cnt = 0; | |
2682 | for (skb = tqp->next; pkt_cnt < tqp->qlen; skb = skb->next) { | |
2683 | if (skb_is_gso(skb)) { | |
2684 | if (pkt_cnt) { | |
2685 | /* handle previous packets first */ | |
2686 | break; | |
2687 | } | |
2688 | length = skb->len; | |
2689 | skb2 = skb_dequeue(tqp); | |
2690 | goto gso_skb; | |
2691 | } | |
2692 | ||
2693 | if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE) | |
2694 | break; | |
2695 | skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32)); | |
2696 | pkt_cnt++; | |
2697 | } | |
2698 | ||
2699 | /* copy to a single skb */ | |
2700 | skb = alloc_skb(skb_totallen, GFP_ATOMIC); | |
2701 | if (!skb) | |
2702 | goto drop; | |
2703 | ||
2704 | skb_put(skb, skb_totallen); | |
2705 | ||
2706 | for (count = pos = 0; count < pkt_cnt; count++) { | |
2707 | skb2 = skb_dequeue(tqp); | |
2708 | if (skb2) { | |
2709 | memcpy(skb->data + pos, skb2->data, skb2->len); | |
2710 | pos += roundup(skb2->len, sizeof(u32)); | |
2711 | dev_kfree_skb(skb2); | |
55d7de9d WH |
2712 | } |
2713 | } | |
2714 | ||
2715 | length = skb_totallen; | |
2716 | ||
2717 | gso_skb: | |
2718 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
2719 | if (!urb) { | |
2720 | netif_dbg(dev, tx_err, dev->net, "no urb\n"); | |
2721 | goto drop; | |
2722 | } | |
2723 | ||
2724 | entry = (struct skb_data *)skb->cb; | |
2725 | entry->urb = urb; | |
2726 | entry->dev = dev; | |
2727 | entry->length = length; | |
2728 | ||
2729 | spin_lock_irqsave(&dev->txq.lock, flags); | |
2730 | ret = usb_autopm_get_interface_async(dev->intf); | |
2731 | if (ret < 0) { | |
2732 | spin_unlock_irqrestore(&dev->txq.lock, flags); | |
2733 | goto drop; | |
2734 | } | |
2735 | ||
2736 | usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out, | |
2737 | skb->data, skb->len, tx_complete, skb); | |
2738 | ||
2739 | if (length % dev->maxpacket == 0) { | |
2740 | /* send USB_ZERO_PACKET */ | |
2741 | urb->transfer_flags |= URB_ZERO_PACKET; | |
2742 | } | |
2743 | ||
2744 | #ifdef CONFIG_PM | |
2745 | /* if this triggers the device is still a sleep */ | |
2746 | if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { | |
2747 | /* transmission will be done in resume */ | |
2748 | usb_anchor_urb(urb, &dev->deferred); | |
2749 | /* no use to process more packets */ | |
2750 | netif_stop_queue(dev->net); | |
2751 | usb_put_urb(urb); | |
2752 | spin_unlock_irqrestore(&dev->txq.lock, flags); | |
2753 | netdev_dbg(dev->net, "Delaying transmission for resumption\n"); | |
2754 | return; | |
2755 | } | |
2756 | #endif | |
2757 | ||
2758 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
2759 | switch (ret) { | |
2760 | case 0: | |
2761 | dev->net->trans_start = jiffies; | |
2762 | lan78xx_queue_skb(&dev->txq, skb, tx_start); | |
2763 | if (skb_queue_len(&dev->txq) >= dev->tx_qlen) | |
2764 | netif_stop_queue(dev->net); | |
2765 | break; | |
2766 | case -EPIPE: | |
2767 | netif_stop_queue(dev->net); | |
2768 | lan78xx_defer_kevent(dev, EVENT_TX_HALT); | |
2769 | usb_autopm_put_interface_async(dev->intf); | |
2770 | break; | |
2771 | default: | |
2772 | usb_autopm_put_interface_async(dev->intf); | |
2773 | netif_dbg(dev, tx_err, dev->net, | |
2774 | "tx: submit urb err %d\n", ret); | |
2775 | break; | |
2776 | } | |
2777 | ||
2778 | spin_unlock_irqrestore(&dev->txq.lock, flags); | |
2779 | ||
2780 | if (ret) { | |
2781 | netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret); | |
2782 | drop: | |
2783 | dev->net->stats.tx_dropped++; | |
2784 | if (skb) | |
2785 | dev_kfree_skb_any(skb); | |
2786 | usb_free_urb(urb); | |
2787 | } else | |
2788 | netif_dbg(dev, tx_queued, dev->net, | |
2789 | "> tx, len %d, type 0x%x\n", length, skb->protocol); | |
2790 | } | |
2791 | ||
2792 | static void lan78xx_rx_bh(struct lan78xx_net *dev) | |
2793 | { | |
2794 | struct urb *urb; | |
2795 | int i; | |
2796 | ||
2797 | if (skb_queue_len(&dev->rxq) < dev->rx_qlen) { | |
2798 | for (i = 0; i < 10; i++) { | |
2799 | if (skb_queue_len(&dev->rxq) >= dev->rx_qlen) | |
2800 | break; | |
2801 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
2802 | if (urb) | |
2803 | if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK) | |
2804 | return; | |
2805 | } | |
2806 | ||
2807 | if (skb_queue_len(&dev->rxq) < dev->rx_qlen) | |
2808 | tasklet_schedule(&dev->bh); | |
2809 | } | |
2810 | if (skb_queue_len(&dev->txq) < dev->tx_qlen) | |
2811 | netif_wake_queue(dev->net); | |
2812 | } | |
2813 | ||
2814 | static void lan78xx_bh(unsigned long param) | |
2815 | { | |
2816 | struct lan78xx_net *dev = (struct lan78xx_net *)param; | |
2817 | struct sk_buff *skb; | |
2818 | struct skb_data *entry; | |
2819 | ||
55d7de9d WH |
2820 | while ((skb = skb_dequeue(&dev->done))) { |
2821 | entry = (struct skb_data *)(skb->cb); | |
2822 | switch (entry->state) { | |
2823 | case rx_done: | |
2824 | entry->state = rx_cleanup; | |
2825 | rx_process(dev, skb); | |
2826 | continue; | |
2827 | case tx_done: | |
2828 | usb_free_urb(entry->urb); | |
2829 | dev_kfree_skb(skb); | |
2830 | continue; | |
2831 | case rx_cleanup: | |
2832 | usb_free_urb(entry->urb); | |
2833 | dev_kfree_skb(skb); | |
2834 | continue; | |
2835 | default: | |
2836 | netdev_dbg(dev->net, "skb state %d\n", entry->state); | |
2837 | return; | |
2838 | } | |
55d7de9d WH |
2839 | } |
2840 | ||
2841 | if (netif_device_present(dev->net) && netif_running(dev->net)) { | |
2842 | if (!skb_queue_empty(&dev->txq_pend)) | |
2843 | lan78xx_tx_bh(dev); | |
2844 | ||
2845 | if (!timer_pending(&dev->delay) && | |
2846 | !test_bit(EVENT_RX_HALT, &dev->flags)) | |
2847 | lan78xx_rx_bh(dev); | |
2848 | } | |
2849 | } | |
2850 | ||
2851 | static void lan78xx_delayedwork(struct work_struct *work) | |
2852 | { | |
2853 | int status; | |
2854 | struct lan78xx_net *dev; | |
2855 | ||
2856 | dev = container_of(work, struct lan78xx_net, wq.work); | |
2857 | ||
2858 | if (test_bit(EVENT_TX_HALT, &dev->flags)) { | |
2859 | unlink_urbs(dev, &dev->txq); | |
2860 | status = usb_autopm_get_interface(dev->intf); | |
2861 | if (status < 0) | |
2862 | goto fail_pipe; | |
2863 | status = usb_clear_halt(dev->udev, dev->pipe_out); | |
2864 | usb_autopm_put_interface(dev->intf); | |
2865 | if (status < 0 && | |
2866 | status != -EPIPE && | |
2867 | status != -ESHUTDOWN) { | |
2868 | if (netif_msg_tx_err(dev)) | |
2869 | fail_pipe: | |
2870 | netdev_err(dev->net, | |
2871 | "can't clear tx halt, status %d\n", | |
2872 | status); | |
2873 | } else { | |
2874 | clear_bit(EVENT_TX_HALT, &dev->flags); | |
2875 | if (status != -ESHUTDOWN) | |
2876 | netif_wake_queue(dev->net); | |
2877 | } | |
2878 | } | |
2879 | if (test_bit(EVENT_RX_HALT, &dev->flags)) { | |
2880 | unlink_urbs(dev, &dev->rxq); | |
2881 | status = usb_autopm_get_interface(dev->intf); | |
2882 | if (status < 0) | |
2883 | goto fail_halt; | |
2884 | status = usb_clear_halt(dev->udev, dev->pipe_in); | |
2885 | usb_autopm_put_interface(dev->intf); | |
2886 | if (status < 0 && | |
2887 | status != -EPIPE && | |
2888 | status != -ESHUTDOWN) { | |
2889 | if (netif_msg_rx_err(dev)) | |
2890 | fail_halt: | |
2891 | netdev_err(dev->net, | |
2892 | "can't clear rx halt, status %d\n", | |
2893 | status); | |
2894 | } else { | |
2895 | clear_bit(EVENT_RX_HALT, &dev->flags); | |
2896 | tasklet_schedule(&dev->bh); | |
2897 | } | |
2898 | } | |
2899 | ||
2900 | if (test_bit(EVENT_LINK_RESET, &dev->flags)) { | |
2901 | int ret = 0; | |
2902 | ||
2903 | clear_bit(EVENT_LINK_RESET, &dev->flags); | |
2904 | status = usb_autopm_get_interface(dev->intf); | |
2905 | if (status < 0) | |
2906 | goto skip_reset; | |
2907 | if (lan78xx_link_reset(dev) < 0) { | |
2908 | usb_autopm_put_interface(dev->intf); | |
2909 | skip_reset: | |
2910 | netdev_info(dev->net, "link reset failed (%d)\n", | |
2911 | ret); | |
2912 | } else { | |
2913 | usb_autopm_put_interface(dev->intf); | |
2914 | } | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | static void intr_complete(struct urb *urb) | |
2919 | { | |
2920 | struct lan78xx_net *dev = urb->context; | |
2921 | int status = urb->status; | |
2922 | ||
2923 | switch (status) { | |
2924 | /* success */ | |
2925 | case 0: | |
2926 | lan78xx_status(dev, urb); | |
2927 | break; | |
2928 | ||
2929 | /* software-driven interface shutdown */ | |
2930 | case -ENOENT: /* urb killed */ | |
2931 | case -ESHUTDOWN: /* hardware gone */ | |
2932 | netif_dbg(dev, ifdown, dev->net, | |
2933 | "intr shutdown, code %d\n", status); | |
2934 | return; | |
2935 | ||
2936 | /* NOTE: not throttling like RX/TX, since this endpoint | |
2937 | * already polls infrequently | |
2938 | */ | |
2939 | default: | |
2940 | netdev_dbg(dev->net, "intr status %d\n", status); | |
2941 | break; | |
2942 | } | |
2943 | ||
2944 | if (!netif_running(dev->net)) | |
2945 | return; | |
2946 | ||
2947 | memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); | |
2948 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
2949 | if (status != 0) | |
2950 | netif_err(dev, timer, dev->net, | |
2951 | "intr resubmit --> %d\n", status); | |
2952 | } | |
2953 | ||
2954 | static void lan78xx_disconnect(struct usb_interface *intf) | |
2955 | { | |
2956 | struct lan78xx_net *dev; | |
2957 | struct usb_device *udev; | |
2958 | struct net_device *net; | |
2959 | ||
2960 | dev = usb_get_intfdata(intf); | |
2961 | usb_set_intfdata(intf, NULL); | |
2962 | if (!dev) | |
2963 | return; | |
2964 | ||
2965 | udev = interface_to_usbdev(intf); | |
2966 | ||
2967 | net = dev->net; | |
2968 | unregister_netdev(net); | |
2969 | ||
2970 | cancel_delayed_work_sync(&dev->wq); | |
2971 | ||
2972 | usb_scuttle_anchored_urbs(&dev->deferred); | |
2973 | ||
2974 | lan78xx_unbind(dev, intf); | |
2975 | ||
2976 | usb_kill_urb(dev->urb_intr); | |
2977 | usb_free_urb(dev->urb_intr); | |
2978 | ||
2979 | free_netdev(net); | |
2980 | usb_put_dev(udev); | |
2981 | } | |
2982 | ||
2983 | void lan78xx_tx_timeout(struct net_device *net) | |
2984 | { | |
2985 | struct lan78xx_net *dev = netdev_priv(net); | |
2986 | ||
2987 | unlink_urbs(dev, &dev->txq); | |
2988 | tasklet_schedule(&dev->bh); | |
2989 | } | |
2990 | ||
2991 | static const struct net_device_ops lan78xx_netdev_ops = { | |
2992 | .ndo_open = lan78xx_open, | |
2993 | .ndo_stop = lan78xx_stop, | |
2994 | .ndo_start_xmit = lan78xx_start_xmit, | |
2995 | .ndo_tx_timeout = lan78xx_tx_timeout, | |
2996 | .ndo_change_mtu = lan78xx_change_mtu, | |
2997 | .ndo_set_mac_address = lan78xx_set_mac_addr, | |
2998 | .ndo_validate_addr = eth_validate_addr, | |
2999 | .ndo_do_ioctl = lan78xx_ioctl, | |
3000 | .ndo_set_rx_mode = lan78xx_set_multicast, | |
3001 | .ndo_set_features = lan78xx_set_features, | |
3002 | .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid, | |
3003 | .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid, | |
3004 | }; | |
3005 | ||
3006 | static int lan78xx_probe(struct usb_interface *intf, | |
3007 | const struct usb_device_id *id) | |
3008 | { | |
3009 | struct lan78xx_net *dev; | |
3010 | struct net_device *netdev; | |
3011 | struct usb_device *udev; | |
3012 | int ret; | |
3013 | unsigned maxp; | |
3014 | unsigned period; | |
3015 | u8 *buf = NULL; | |
3016 | ||
3017 | udev = interface_to_usbdev(intf); | |
3018 | udev = usb_get_dev(udev); | |
3019 | ||
3020 | ret = -ENOMEM; | |
3021 | netdev = alloc_etherdev(sizeof(struct lan78xx_net)); | |
3022 | if (!netdev) { | |
3023 | dev_err(&intf->dev, "Error: OOM\n"); | |
3024 | goto out1; | |
3025 | } | |
3026 | ||
3027 | /* netdev_printk() needs this */ | |
3028 | SET_NETDEV_DEV(netdev, &intf->dev); | |
3029 | ||
3030 | dev = netdev_priv(netdev); | |
3031 | dev->udev = udev; | |
3032 | dev->intf = intf; | |
3033 | dev->net = netdev; | |
3034 | dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV | |
3035 | | NETIF_MSG_PROBE | NETIF_MSG_LINK); | |
3036 | ||
3037 | skb_queue_head_init(&dev->rxq); | |
3038 | skb_queue_head_init(&dev->txq); | |
3039 | skb_queue_head_init(&dev->done); | |
3040 | skb_queue_head_init(&dev->rxq_pause); | |
3041 | skb_queue_head_init(&dev->txq_pend); | |
3042 | mutex_init(&dev->phy_mutex); | |
3043 | ||
3044 | tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev); | |
3045 | INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork); | |
3046 | init_usb_anchor(&dev->deferred); | |
3047 | ||
3048 | netdev->netdev_ops = &lan78xx_netdev_ops; | |
3049 | netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES; | |
3050 | netdev->ethtool_ops = &lan78xx_ethtool_ops; | |
3051 | ||
3052 | ret = lan78xx_bind(dev, intf); | |
3053 | if (ret < 0) | |
3054 | goto out2; | |
3055 | strcpy(netdev->name, "eth%d"); | |
3056 | ||
3057 | if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len)) | |
3058 | netdev->mtu = dev->hard_mtu - netdev->hard_header_len; | |
3059 | ||
3060 | dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0; | |
3061 | dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1; | |
3062 | dev->ep_intr = (intf->cur_altsetting)->endpoint + 2; | |
3063 | ||
3064 | dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE); | |
3065 | dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE); | |
3066 | ||
3067 | dev->pipe_intr = usb_rcvintpipe(dev->udev, | |
3068 | dev->ep_intr->desc.bEndpointAddress & | |
3069 | USB_ENDPOINT_NUMBER_MASK); | |
3070 | period = dev->ep_intr->desc.bInterval; | |
3071 | ||
3072 | maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0); | |
3073 | buf = kmalloc(maxp, GFP_KERNEL); | |
3074 | if (buf) { | |
3075 | dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL); | |
3076 | if (!dev->urb_intr) { | |
3077 | kfree(buf); | |
3078 | goto out3; | |
3079 | } else { | |
3080 | usb_fill_int_urb(dev->urb_intr, dev->udev, | |
3081 | dev->pipe_intr, buf, maxp, | |
3082 | intr_complete, dev, period); | |
3083 | } | |
3084 | } | |
3085 | ||
3086 | dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1); | |
3087 | ||
3088 | /* driver requires remote-wakeup capability during autosuspend. */ | |
3089 | intf->needs_remote_wakeup = 1; | |
3090 | ||
3091 | ret = register_netdev(netdev); | |
3092 | if (ret != 0) { | |
3093 | netif_err(dev, probe, netdev, "couldn't register the device\n"); | |
3094 | goto out2; | |
3095 | } | |
3096 | ||
3097 | usb_set_intfdata(intf, dev); | |
3098 | ||
3099 | ret = device_set_wakeup_enable(&udev->dev, true); | |
3100 | ||
3101 | /* Default delay of 2sec has more overhead than advantage. | |
3102 | * Set to 10sec as default. | |
3103 | */ | |
3104 | pm_runtime_set_autosuspend_delay(&udev->dev, | |
3105 | DEFAULT_AUTOSUSPEND_DELAY); | |
3106 | ||
3107 | return 0; | |
3108 | ||
55d7de9d WH |
3109 | out3: |
3110 | lan78xx_unbind(dev, intf); | |
3111 | out2: | |
3112 | free_netdev(netdev); | |
3113 | out1: | |
3114 | usb_put_dev(udev); | |
3115 | ||
3116 | return ret; | |
3117 | } | |
3118 | ||
3119 | static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len) | |
3120 | { | |
3121 | const u16 crc16poly = 0x8005; | |
3122 | int i; | |
3123 | u16 bit, crc, msb; | |
3124 | u8 data; | |
3125 | ||
3126 | crc = 0xFFFF; | |
3127 | for (i = 0; i < len; i++) { | |
3128 | data = *buf++; | |
3129 | for (bit = 0; bit < 8; bit++) { | |
3130 | msb = crc >> 15; | |
3131 | crc <<= 1; | |
3132 | ||
3133 | if (msb ^ (u16)(data & 1)) { | |
3134 | crc ^= crc16poly; | |
3135 | crc |= (u16)0x0001U; | |
3136 | } | |
3137 | data >>= 1; | |
3138 | } | |
3139 | } | |
3140 | ||
3141 | return crc; | |
3142 | } | |
3143 | ||
3144 | static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol) | |
3145 | { | |
3146 | u32 buf; | |
3147 | int ret; | |
3148 | int mask_index; | |
3149 | u16 crc; | |
3150 | u32 temp_wucsr; | |
3151 | u32 temp_pmt_ctl; | |
3152 | const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; | |
3153 | const u8 ipv6_multicast[3] = { 0x33, 0x33 }; | |
3154 | const u8 arp_type[2] = { 0x08, 0x06 }; | |
3155 | ||
3156 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); | |
3157 | buf &= ~MAC_TX_TXEN_; | |
3158 | ret = lan78xx_write_reg(dev, MAC_TX, buf); | |
3159 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); | |
3160 | buf &= ~MAC_RX_RXEN_; | |
3161 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
3162 | ||
3163 | ret = lan78xx_write_reg(dev, WUCSR, 0); | |
3164 | ret = lan78xx_write_reg(dev, WUCSR2, 0); | |
3165 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); | |
3166 | ||
3167 | temp_wucsr = 0; | |
3168 | ||
3169 | temp_pmt_ctl = 0; | |
3170 | ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl); | |
3171 | temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_; | |
3172 | temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_; | |
3173 | ||
3174 | for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++) | |
3175 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0); | |
3176 | ||
3177 | mask_index = 0; | |
3178 | if (wol & WAKE_PHY) { | |
3179 | temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_; | |
3180 | ||
3181 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
3182 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
3183 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
3184 | } | |
3185 | if (wol & WAKE_MAGIC) { | |
3186 | temp_wucsr |= WUCSR_MPEN_; | |
3187 | ||
3188 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
3189 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
3190 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_; | |
3191 | } | |
3192 | if (wol & WAKE_BCAST) { | |
3193 | temp_wucsr |= WUCSR_BCST_EN_; | |
3194 | ||
3195 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
3196 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
3197 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
3198 | } | |
3199 | if (wol & WAKE_MCAST) { | |
3200 | temp_wucsr |= WUCSR_WAKE_EN_; | |
3201 | ||
3202 | /* set WUF_CFG & WUF_MASK for IPv4 Multicast */ | |
3203 | crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3); | |
3204 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), | |
3205 | WUF_CFGX_EN_ | | |
3206 | WUF_CFGX_TYPE_MCAST_ | | |
3207 | (0 << WUF_CFGX_OFFSET_SHIFT_) | | |
3208 | (crc & WUF_CFGX_CRC16_MASK_)); | |
3209 | ||
3210 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7); | |
3211 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); | |
3212 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); | |
3213 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); | |
3214 | mask_index++; | |
3215 | ||
3216 | /* for IPv6 Multicast */ | |
3217 | crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2); | |
3218 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), | |
3219 | WUF_CFGX_EN_ | | |
3220 | WUF_CFGX_TYPE_MCAST_ | | |
3221 | (0 << WUF_CFGX_OFFSET_SHIFT_) | | |
3222 | (crc & WUF_CFGX_CRC16_MASK_)); | |
3223 | ||
3224 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3); | |
3225 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); | |
3226 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); | |
3227 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); | |
3228 | mask_index++; | |
3229 | ||
3230 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
3231 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
3232 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
3233 | } | |
3234 | if (wol & WAKE_UCAST) { | |
3235 | temp_wucsr |= WUCSR_PFDA_EN_; | |
3236 | ||
3237 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
3238 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
3239 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
3240 | } | |
3241 | if (wol & WAKE_ARP) { | |
3242 | temp_wucsr |= WUCSR_WAKE_EN_; | |
3243 | ||
3244 | /* set WUF_CFG & WUF_MASK | |
3245 | * for packettype (offset 12,13) = ARP (0x0806) | |
3246 | */ | |
3247 | crc = lan78xx_wakeframe_crc16(arp_type, 2); | |
3248 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), | |
3249 | WUF_CFGX_EN_ | | |
3250 | WUF_CFGX_TYPE_ALL_ | | |
3251 | (0 << WUF_CFGX_OFFSET_SHIFT_) | | |
3252 | (crc & WUF_CFGX_CRC16_MASK_)); | |
3253 | ||
3254 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000); | |
3255 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); | |
3256 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); | |
3257 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); | |
3258 | mask_index++; | |
3259 | ||
3260 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
3261 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
3262 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
3263 | } | |
3264 | ||
3265 | ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr); | |
3266 | ||
3267 | /* when multiple WOL bits are set */ | |
3268 | if (hweight_long((unsigned long)wol) > 1) { | |
3269 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
3270 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
3271 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
3272 | } | |
3273 | ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl); | |
3274 | ||
3275 | /* clear WUPS */ | |
3276 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
3277 | buf |= PMT_CTL_WUPS_MASK_; | |
3278 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
3279 | ||
3280 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); | |
3281 | buf |= MAC_RX_RXEN_; | |
3282 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
3283 | ||
3284 | return 0; | |
3285 | } | |
3286 | ||
3287 | int lan78xx_suspend(struct usb_interface *intf, pm_message_t message) | |
3288 | { | |
3289 | struct lan78xx_net *dev = usb_get_intfdata(intf); | |
3290 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
3291 | u32 buf; | |
3292 | int ret; | |
3293 | int event; | |
3294 | ||
55d7de9d WH |
3295 | event = message.event; |
3296 | ||
3297 | if (!dev->suspend_count++) { | |
3298 | spin_lock_irq(&dev->txq.lock); | |
3299 | /* don't autosuspend while transmitting */ | |
3300 | if ((skb_queue_len(&dev->txq) || | |
3301 | skb_queue_len(&dev->txq_pend)) && | |
3302 | PMSG_IS_AUTO(message)) { | |
3303 | spin_unlock_irq(&dev->txq.lock); | |
3304 | ret = -EBUSY; | |
3305 | goto out; | |
3306 | } else { | |
3307 | set_bit(EVENT_DEV_ASLEEP, &dev->flags); | |
3308 | spin_unlock_irq(&dev->txq.lock); | |
3309 | } | |
3310 | ||
3311 | /* stop TX & RX */ | |
3312 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); | |
3313 | buf &= ~MAC_TX_TXEN_; | |
3314 | ret = lan78xx_write_reg(dev, MAC_TX, buf); | |
3315 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); | |
3316 | buf &= ~MAC_RX_RXEN_; | |
3317 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
3318 | ||
3319 | /* empty out the rx and queues */ | |
3320 | netif_device_detach(dev->net); | |
3321 | lan78xx_terminate_urbs(dev); | |
3322 | usb_kill_urb(dev->urb_intr); | |
3323 | ||
3324 | /* reattach */ | |
3325 | netif_device_attach(dev->net); | |
3326 | } | |
3327 | ||
3328 | if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { | |
3329 | if (PMSG_IS_AUTO(message)) { | |
3330 | /* auto suspend (selective suspend) */ | |
3331 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); | |
3332 | buf &= ~MAC_TX_TXEN_; | |
3333 | ret = lan78xx_write_reg(dev, MAC_TX, buf); | |
3334 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); | |
3335 | buf &= ~MAC_RX_RXEN_; | |
3336 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
3337 | ||
3338 | ret = lan78xx_write_reg(dev, WUCSR, 0); | |
3339 | ret = lan78xx_write_reg(dev, WUCSR2, 0); | |
3340 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); | |
3341 | ||
3342 | /* set goodframe wakeup */ | |
3343 | ret = lan78xx_read_reg(dev, WUCSR, &buf); | |
3344 | ||
3345 | buf |= WUCSR_RFE_WAKE_EN_; | |
3346 | buf |= WUCSR_STORE_WAKE_; | |
3347 | ||
3348 | ret = lan78xx_write_reg(dev, WUCSR, buf); | |
3349 | ||
3350 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
3351 | ||
3352 | buf &= ~PMT_CTL_RES_CLR_WKP_EN_; | |
3353 | buf |= PMT_CTL_RES_CLR_WKP_STS_; | |
3354 | ||
3355 | buf |= PMT_CTL_PHY_WAKE_EN_; | |
3356 | buf |= PMT_CTL_WOL_EN_; | |
3357 | buf &= ~PMT_CTL_SUS_MODE_MASK_; | |
3358 | buf |= PMT_CTL_SUS_MODE_3_; | |
3359 | ||
3360 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
3361 | ||
3362 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
3363 | ||
3364 | buf |= PMT_CTL_WUPS_MASK_; | |
3365 | ||
3366 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
3367 | ||
3368 | ret = lan78xx_read_reg(dev, MAC_RX, &buf); | |
3369 | buf |= MAC_RX_RXEN_; | |
3370 | ret = lan78xx_write_reg(dev, MAC_RX, buf); | |
3371 | } else { | |
3372 | lan78xx_set_suspend(dev, pdata->wol); | |
3373 | } | |
3374 | } | |
3375 | ||
49d28b56 | 3376 | ret = 0; |
55d7de9d WH |
3377 | out: |
3378 | return ret; | |
3379 | } | |
3380 | ||
3381 | int lan78xx_resume(struct usb_interface *intf) | |
3382 | { | |
3383 | struct lan78xx_net *dev = usb_get_intfdata(intf); | |
3384 | struct sk_buff *skb; | |
3385 | struct urb *res; | |
3386 | int ret; | |
3387 | u32 buf; | |
3388 | ||
3389 | if (!--dev->suspend_count) { | |
3390 | /* resume interrupt URBs */ | |
3391 | if (dev->urb_intr && test_bit(EVENT_DEV_OPEN, &dev->flags)) | |
3392 | usb_submit_urb(dev->urb_intr, GFP_NOIO); | |
3393 | ||
3394 | spin_lock_irq(&dev->txq.lock); | |
3395 | while ((res = usb_get_from_anchor(&dev->deferred))) { | |
3396 | skb = (struct sk_buff *)res->context; | |
3397 | ret = usb_submit_urb(res, GFP_ATOMIC); | |
3398 | if (ret < 0) { | |
3399 | dev_kfree_skb_any(skb); | |
3400 | usb_free_urb(res); | |
3401 | usb_autopm_put_interface_async(dev->intf); | |
3402 | } else { | |
3403 | dev->net->trans_start = jiffies; | |
3404 | lan78xx_queue_skb(&dev->txq, skb, tx_start); | |
3405 | } | |
3406 | } | |
3407 | ||
3408 | clear_bit(EVENT_DEV_ASLEEP, &dev->flags); | |
3409 | spin_unlock_irq(&dev->txq.lock); | |
3410 | ||
3411 | if (test_bit(EVENT_DEV_OPEN, &dev->flags)) { | |
3412 | if (!(skb_queue_len(&dev->txq) >= dev->tx_qlen)) | |
3413 | netif_start_queue(dev->net); | |
3414 | tasklet_schedule(&dev->bh); | |
3415 | } | |
3416 | } | |
3417 | ||
3418 | ret = lan78xx_write_reg(dev, WUCSR2, 0); | |
3419 | ret = lan78xx_write_reg(dev, WUCSR, 0); | |
3420 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); | |
3421 | ||
3422 | ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ | | |
3423 | WUCSR2_ARP_RCD_ | | |
3424 | WUCSR2_IPV6_TCPSYN_RCD_ | | |
3425 | WUCSR2_IPV4_TCPSYN_RCD_); | |
3426 | ||
3427 | ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ | | |
3428 | WUCSR_EEE_RX_WAKE_ | | |
3429 | WUCSR_PFDA_FR_ | | |
3430 | WUCSR_RFE_WAKE_FR_ | | |
3431 | WUCSR_WUFR_ | | |
3432 | WUCSR_MPR_ | | |
3433 | WUCSR_BCST_FR_); | |
3434 | ||
3435 | ret = lan78xx_read_reg(dev, MAC_TX, &buf); | |
3436 | buf |= MAC_TX_TXEN_; | |
3437 | ret = lan78xx_write_reg(dev, MAC_TX, buf); | |
3438 | ||
3439 | return 0; | |
3440 | } | |
3441 | ||
3442 | int lan78xx_reset_resume(struct usb_interface *intf) | |
3443 | { | |
3444 | struct lan78xx_net *dev = usb_get_intfdata(intf); | |
3445 | ||
3446 | lan78xx_reset(dev); | |
ce85e13a WH |
3447 | |
3448 | lan78xx_phy_init(dev); | |
3449 | ||
55d7de9d WH |
3450 | return lan78xx_resume(intf); |
3451 | } | |
3452 | ||
3453 | static const struct usb_device_id products[] = { | |
3454 | { | |
3455 | /* LAN7800 USB Gigabit Ethernet Device */ | |
3456 | USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID), | |
3457 | }, | |
3458 | { | |
3459 | /* LAN7850 USB Gigabit Ethernet Device */ | |
3460 | USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID), | |
3461 | }, | |
3462 | {}, | |
3463 | }; | |
3464 | MODULE_DEVICE_TABLE(usb, products); | |
3465 | ||
3466 | static struct usb_driver lan78xx_driver = { | |
3467 | .name = DRIVER_NAME, | |
3468 | .id_table = products, | |
3469 | .probe = lan78xx_probe, | |
3470 | .disconnect = lan78xx_disconnect, | |
3471 | .suspend = lan78xx_suspend, | |
3472 | .resume = lan78xx_resume, | |
3473 | .reset_resume = lan78xx_reset_resume, | |
3474 | .supports_autosuspend = 1, | |
3475 | .disable_hub_initiated_lpm = 1, | |
3476 | }; | |
3477 | ||
3478 | module_usb_driver(lan78xx_driver); | |
3479 | ||
3480 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
3481 | MODULE_DESCRIPTION(DRIVER_DESC); | |
3482 | MODULE_LICENSE("GPL"); |