Loading...
Note: File does not exist in v3.15.
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>
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>
33#include <linux/microchipphy.h>
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"
39#define DRIVER_VERSION "1.0.4"
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)
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/* statistic update interval (mSec) */
90#define STAT_UPDATE_TIMER (1 * 1000)
91
92static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = {
93 "RX FCS Errors",
94 "RX Alignment Errors",
95 "Rx Fragment Errors",
96 "RX Jabber Errors",
97 "RX Undersize Frame Errors",
98 "RX Oversize Frame Errors",
99 "RX Dropped Frames",
100 "RX Unicast Byte Count",
101 "RX Broadcast Byte Count",
102 "RX Multicast Byte Count",
103 "RX Unicast Frames",
104 "RX Broadcast Frames",
105 "RX Multicast Frames",
106 "RX Pause Frames",
107 "RX 64 Byte Frames",
108 "RX 65 - 127 Byte Frames",
109 "RX 128 - 255 Byte Frames",
110 "RX 256 - 511 Bytes Frames",
111 "RX 512 - 1023 Byte Frames",
112 "RX 1024 - 1518 Byte Frames",
113 "RX Greater 1518 Byte Frames",
114 "EEE RX LPI Transitions",
115 "EEE RX LPI Time",
116 "TX FCS Errors",
117 "TX Excess Deferral Errors",
118 "TX Carrier Errors",
119 "TX Bad Byte Count",
120 "TX Single Collisions",
121 "TX Multiple Collisions",
122 "TX Excessive Collision",
123 "TX Late Collisions",
124 "TX Unicast Byte Count",
125 "TX Broadcast Byte Count",
126 "TX Multicast Byte Count",
127 "TX Unicast Frames",
128 "TX Broadcast Frames",
129 "TX Multicast Frames",
130 "TX Pause Frames",
131 "TX 64 Byte Frames",
132 "TX 65 - 127 Byte Frames",
133 "TX 128 - 255 Byte Frames",
134 "TX 256 - 511 Bytes Frames",
135 "TX 512 - 1023 Byte Frames",
136 "TX 1024 - 1518 Byte Frames",
137 "TX Greater 1518 Byte Frames",
138 "EEE TX LPI Transitions",
139 "EEE TX LPI Time",
140};
141
142struct lan78xx_statstage {
143 u32 rx_fcs_errors;
144 u32 rx_alignment_errors;
145 u32 rx_fragment_errors;
146 u32 rx_jabber_errors;
147 u32 rx_undersize_frame_errors;
148 u32 rx_oversize_frame_errors;
149 u32 rx_dropped_frames;
150 u32 rx_unicast_byte_count;
151 u32 rx_broadcast_byte_count;
152 u32 rx_multicast_byte_count;
153 u32 rx_unicast_frames;
154 u32 rx_broadcast_frames;
155 u32 rx_multicast_frames;
156 u32 rx_pause_frames;
157 u32 rx_64_byte_frames;
158 u32 rx_65_127_byte_frames;
159 u32 rx_128_255_byte_frames;
160 u32 rx_256_511_bytes_frames;
161 u32 rx_512_1023_byte_frames;
162 u32 rx_1024_1518_byte_frames;
163 u32 rx_greater_1518_byte_frames;
164 u32 eee_rx_lpi_transitions;
165 u32 eee_rx_lpi_time;
166 u32 tx_fcs_errors;
167 u32 tx_excess_deferral_errors;
168 u32 tx_carrier_errors;
169 u32 tx_bad_byte_count;
170 u32 tx_single_collisions;
171 u32 tx_multiple_collisions;
172 u32 tx_excessive_collision;
173 u32 tx_late_collisions;
174 u32 tx_unicast_byte_count;
175 u32 tx_broadcast_byte_count;
176 u32 tx_multicast_byte_count;
177 u32 tx_unicast_frames;
178 u32 tx_broadcast_frames;
179 u32 tx_multicast_frames;
180 u32 tx_pause_frames;
181 u32 tx_64_byte_frames;
182 u32 tx_65_127_byte_frames;
183 u32 tx_128_255_byte_frames;
184 u32 tx_256_511_bytes_frames;
185 u32 tx_512_1023_byte_frames;
186 u32 tx_1024_1518_byte_frames;
187 u32 tx_greater_1518_byte_frames;
188 u32 eee_tx_lpi_transitions;
189 u32 eee_tx_lpi_time;
190};
191
192struct lan78xx_statstage64 {
193 u64 rx_fcs_errors;
194 u64 rx_alignment_errors;
195 u64 rx_fragment_errors;
196 u64 rx_jabber_errors;
197 u64 rx_undersize_frame_errors;
198 u64 rx_oversize_frame_errors;
199 u64 rx_dropped_frames;
200 u64 rx_unicast_byte_count;
201 u64 rx_broadcast_byte_count;
202 u64 rx_multicast_byte_count;
203 u64 rx_unicast_frames;
204 u64 rx_broadcast_frames;
205 u64 rx_multicast_frames;
206 u64 rx_pause_frames;
207 u64 rx_64_byte_frames;
208 u64 rx_65_127_byte_frames;
209 u64 rx_128_255_byte_frames;
210 u64 rx_256_511_bytes_frames;
211 u64 rx_512_1023_byte_frames;
212 u64 rx_1024_1518_byte_frames;
213 u64 rx_greater_1518_byte_frames;
214 u64 eee_rx_lpi_transitions;
215 u64 eee_rx_lpi_time;
216 u64 tx_fcs_errors;
217 u64 tx_excess_deferral_errors;
218 u64 tx_carrier_errors;
219 u64 tx_bad_byte_count;
220 u64 tx_single_collisions;
221 u64 tx_multiple_collisions;
222 u64 tx_excessive_collision;
223 u64 tx_late_collisions;
224 u64 tx_unicast_byte_count;
225 u64 tx_broadcast_byte_count;
226 u64 tx_multicast_byte_count;
227 u64 tx_unicast_frames;
228 u64 tx_broadcast_frames;
229 u64 tx_multicast_frames;
230 u64 tx_pause_frames;
231 u64 tx_64_byte_frames;
232 u64 tx_65_127_byte_frames;
233 u64 tx_128_255_byte_frames;
234 u64 tx_256_511_bytes_frames;
235 u64 tx_512_1023_byte_frames;
236 u64 tx_1024_1518_byte_frames;
237 u64 tx_greater_1518_byte_frames;
238 u64 eee_tx_lpi_transitions;
239 u64 eee_tx_lpi_time;
240};
241
242struct lan78xx_net;
243
244struct lan78xx_priv {
245 struct lan78xx_net *dev;
246 u32 rfe_ctl;
247 u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */
248 u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */
249 u32 vlan_table[DP_SEL_VHF_VLAN_LEN];
250 struct mutex dataport_mutex; /* for dataport access */
251 spinlock_t rfe_ctl_lock; /* for rfe register access */
252 struct work_struct set_multicast;
253 struct work_struct set_vlan;
254 u32 wol;
255};
256
257enum skb_state {
258 illegal = 0,
259 tx_start,
260 tx_done,
261 rx_start,
262 rx_done,
263 rx_cleanup,
264 unlink_start
265};
266
267struct skb_data { /* skb->cb is one of these */
268 struct urb *urb;
269 struct lan78xx_net *dev;
270 enum skb_state state;
271 size_t length;
272 int num_of_packet;
273};
274
275struct usb_context {
276 struct usb_ctrlrequest req;
277 struct lan78xx_net *dev;
278};
279
280#define EVENT_TX_HALT 0
281#define EVENT_RX_HALT 1
282#define EVENT_RX_MEMORY 2
283#define EVENT_STS_SPLIT 3
284#define EVENT_LINK_RESET 4
285#define EVENT_RX_PAUSED 5
286#define EVENT_DEV_WAKING 6
287#define EVENT_DEV_ASLEEP 7
288#define EVENT_DEV_OPEN 8
289#define EVENT_STAT_UPDATE 9
290
291struct statstage {
292 struct mutex access_lock; /* for stats access */
293 struct lan78xx_statstage saved;
294 struct lan78xx_statstage rollover_count;
295 struct lan78xx_statstage rollover_max;
296 struct lan78xx_statstage64 curr_stat;
297};
298
299struct lan78xx_net {
300 struct net_device *net;
301 struct usb_device *udev;
302 struct usb_interface *intf;
303 void *driver_priv;
304
305 int rx_qlen;
306 int tx_qlen;
307 struct sk_buff_head rxq;
308 struct sk_buff_head txq;
309 struct sk_buff_head done;
310 struct sk_buff_head rxq_pause;
311 struct sk_buff_head txq_pend;
312
313 struct tasklet_struct bh;
314 struct delayed_work wq;
315
316 struct usb_host_endpoint *ep_blkin;
317 struct usb_host_endpoint *ep_blkout;
318 struct usb_host_endpoint *ep_intr;
319
320 int msg_enable;
321
322 struct urb *urb_intr;
323 struct usb_anchor deferred;
324
325 struct mutex phy_mutex; /* for phy access */
326 unsigned pipe_in, pipe_out, pipe_intr;
327
328 u32 hard_mtu; /* count any extra framing */
329 size_t rx_urb_size; /* size for rx urbs */
330
331 unsigned long flags;
332
333 wait_queue_head_t *wait;
334 unsigned char suspend_count;
335
336 unsigned maxpacket;
337 struct timer_list delay;
338 struct timer_list stat_monitor;
339
340 unsigned long data[5];
341
342 int link_on;
343 u8 mdix_ctrl;
344
345 u32 chipid;
346 u32 chiprev;
347 struct mii_bus *mdiobus;
348
349 int fc_autoneg;
350 u8 fc_request_control;
351
352 int delta;
353 struct statstage stats;
354};
355
356/* use ethtool to change the level for any given device */
357static int msg_level = -1;
358module_param(msg_level, int, 0);
359MODULE_PARM_DESC(msg_level, "Override default message level");
360
361static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
362{
363 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL);
364 int ret;
365
366 if (!buf)
367 return -ENOMEM;
368
369 ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
370 USB_VENDOR_REQUEST_READ_REGISTER,
371 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
372 0, index, buf, 4, USB_CTRL_GET_TIMEOUT);
373 if (likely(ret >= 0)) {
374 le32_to_cpus(buf);
375 *data = *buf;
376 } else {
377 netdev_warn(dev->net,
378 "Failed to read register index 0x%08x. ret = %d",
379 index, ret);
380 }
381
382 kfree(buf);
383
384 return ret;
385}
386
387static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data)
388{
389 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL);
390 int ret;
391
392 if (!buf)
393 return -ENOMEM;
394
395 *buf = data;
396 cpu_to_le32s(buf);
397
398 ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
399 USB_VENDOR_REQUEST_WRITE_REGISTER,
400 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
401 0, index, buf, 4, USB_CTRL_SET_TIMEOUT);
402 if (unlikely(ret < 0)) {
403 netdev_warn(dev->net,
404 "Failed to write register index 0x%08x. ret = %d",
405 index, ret);
406 }
407
408 kfree(buf);
409
410 return ret;
411}
412
413static int lan78xx_read_stats(struct lan78xx_net *dev,
414 struct lan78xx_statstage *data)
415{
416 int ret = 0;
417 int i;
418 struct lan78xx_statstage *stats;
419 u32 *src;
420 u32 *dst;
421
422 stats = kmalloc(sizeof(*stats), GFP_KERNEL);
423 if (!stats)
424 return -ENOMEM;
425
426 ret = usb_control_msg(dev->udev,
427 usb_rcvctrlpipe(dev->udev, 0),
428 USB_VENDOR_REQUEST_GET_STATS,
429 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
430 0,
431 0,
432 (void *)stats,
433 sizeof(*stats),
434 USB_CTRL_SET_TIMEOUT);
435 if (likely(ret >= 0)) {
436 src = (u32 *)stats;
437 dst = (u32 *)data;
438 for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) {
439 le32_to_cpus(&src[i]);
440 dst[i] = src[i];
441 }
442 } else {
443 netdev_warn(dev->net,
444 "Failed to read stat ret = 0x%x", ret);
445 }
446
447 kfree(stats);
448
449 return ret;
450}
451
452#define check_counter_rollover(struct1, dev_stats, member) { \
453 if (struct1->member < dev_stats.saved.member) \
454 dev_stats.rollover_count.member++; \
455 }
456
457static void lan78xx_check_stat_rollover(struct lan78xx_net *dev,
458 struct lan78xx_statstage *stats)
459{
460 check_counter_rollover(stats, dev->stats, rx_fcs_errors);
461 check_counter_rollover(stats, dev->stats, rx_alignment_errors);
462 check_counter_rollover(stats, dev->stats, rx_fragment_errors);
463 check_counter_rollover(stats, dev->stats, rx_jabber_errors);
464 check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors);
465 check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors);
466 check_counter_rollover(stats, dev->stats, rx_dropped_frames);
467 check_counter_rollover(stats, dev->stats, rx_unicast_byte_count);
468 check_counter_rollover(stats, dev->stats, rx_broadcast_byte_count);
469 check_counter_rollover(stats, dev->stats, rx_multicast_byte_count);
470 check_counter_rollover(stats, dev->stats, rx_unicast_frames);
471 check_counter_rollover(stats, dev->stats, rx_broadcast_frames);
472 check_counter_rollover(stats, dev->stats, rx_multicast_frames);
473 check_counter_rollover(stats, dev->stats, rx_pause_frames);
474 check_counter_rollover(stats, dev->stats, rx_64_byte_frames);
475 check_counter_rollover(stats, dev->stats, rx_65_127_byte_frames);
476 check_counter_rollover(stats, dev->stats, rx_128_255_byte_frames);
477 check_counter_rollover(stats, dev->stats, rx_256_511_bytes_frames);
478 check_counter_rollover(stats, dev->stats, rx_512_1023_byte_frames);
479 check_counter_rollover(stats, dev->stats, rx_1024_1518_byte_frames);
480 check_counter_rollover(stats, dev->stats, rx_greater_1518_byte_frames);
481 check_counter_rollover(stats, dev->stats, eee_rx_lpi_transitions);
482 check_counter_rollover(stats, dev->stats, eee_rx_lpi_time);
483 check_counter_rollover(stats, dev->stats, tx_fcs_errors);
484 check_counter_rollover(stats, dev->stats, tx_excess_deferral_errors);
485 check_counter_rollover(stats, dev->stats, tx_carrier_errors);
486 check_counter_rollover(stats, dev->stats, tx_bad_byte_count);
487 check_counter_rollover(stats, dev->stats, tx_single_collisions);
488 check_counter_rollover(stats, dev->stats, tx_multiple_collisions);
489 check_counter_rollover(stats, dev->stats, tx_excessive_collision);
490 check_counter_rollover(stats, dev->stats, tx_late_collisions);
491 check_counter_rollover(stats, dev->stats, tx_unicast_byte_count);
492 check_counter_rollover(stats, dev->stats, tx_broadcast_byte_count);
493 check_counter_rollover(stats, dev->stats, tx_multicast_byte_count);
494 check_counter_rollover(stats, dev->stats, tx_unicast_frames);
495 check_counter_rollover(stats, dev->stats, tx_broadcast_frames);
496 check_counter_rollover(stats, dev->stats, tx_multicast_frames);
497 check_counter_rollover(stats, dev->stats, tx_pause_frames);
498 check_counter_rollover(stats, dev->stats, tx_64_byte_frames);
499 check_counter_rollover(stats, dev->stats, tx_65_127_byte_frames);
500 check_counter_rollover(stats, dev->stats, tx_128_255_byte_frames);
501 check_counter_rollover(stats, dev->stats, tx_256_511_bytes_frames);
502 check_counter_rollover(stats, dev->stats, tx_512_1023_byte_frames);
503 check_counter_rollover(stats, dev->stats, tx_1024_1518_byte_frames);
504 check_counter_rollover(stats, dev->stats, tx_greater_1518_byte_frames);
505 check_counter_rollover(stats, dev->stats, eee_tx_lpi_transitions);
506 check_counter_rollover(stats, dev->stats, eee_tx_lpi_time);
507
508 memcpy(&dev->stats.saved, stats, sizeof(struct lan78xx_statstage));
509}
510
511static void lan78xx_update_stats(struct lan78xx_net *dev)
512{
513 u32 *p, *count, *max;
514 u64 *data;
515 int i;
516 struct lan78xx_statstage lan78xx_stats;
517
518 if (usb_autopm_get_interface(dev->intf) < 0)
519 return;
520
521 p = (u32 *)&lan78xx_stats;
522 count = (u32 *)&dev->stats.rollover_count;
523 max = (u32 *)&dev->stats.rollover_max;
524 data = (u64 *)&dev->stats.curr_stat;
525
526 mutex_lock(&dev->stats.access_lock);
527
528 if (lan78xx_read_stats(dev, &lan78xx_stats) > 0)
529 lan78xx_check_stat_rollover(dev, &lan78xx_stats);
530
531 for (i = 0; i < (sizeof(lan78xx_stats) / (sizeof(u32))); i++)
532 data[i] = (u64)p[i] + ((u64)count[i] * ((u64)max[i] + 1));
533
534 mutex_unlock(&dev->stats.access_lock);
535
536 usb_autopm_put_interface(dev->intf);
537}
538
539/* Loop until the read is completed with timeout called with phy_mutex held */
540static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev)
541{
542 unsigned long start_time = jiffies;
543 u32 val;
544 int ret;
545
546 do {
547 ret = lan78xx_read_reg(dev, MII_ACC, &val);
548 if (unlikely(ret < 0))
549 return -EIO;
550
551 if (!(val & MII_ACC_MII_BUSY_))
552 return 0;
553 } while (!time_after(jiffies, start_time + HZ));
554
555 return -EIO;
556}
557
558static inline u32 mii_access(int id, int index, int read)
559{
560 u32 ret;
561
562 ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_;
563 ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_;
564 if (read)
565 ret |= MII_ACC_MII_READ_;
566 else
567 ret |= MII_ACC_MII_WRITE_;
568 ret |= MII_ACC_MII_BUSY_;
569
570 return ret;
571}
572
573static int lan78xx_wait_eeprom(struct lan78xx_net *dev)
574{
575 unsigned long start_time = jiffies;
576 u32 val;
577 int ret;
578
579 do {
580 ret = lan78xx_read_reg(dev, E2P_CMD, &val);
581 if (unlikely(ret < 0))
582 return -EIO;
583
584 if (!(val & E2P_CMD_EPC_BUSY_) ||
585 (val & E2P_CMD_EPC_TIMEOUT_))
586 break;
587 usleep_range(40, 100);
588 } while (!time_after(jiffies, start_time + HZ));
589
590 if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) {
591 netdev_warn(dev->net, "EEPROM read operation timeout");
592 return -EIO;
593 }
594
595 return 0;
596}
597
598static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev)
599{
600 unsigned long start_time = jiffies;
601 u32 val;
602 int ret;
603
604 do {
605 ret = lan78xx_read_reg(dev, E2P_CMD, &val);
606 if (unlikely(ret < 0))
607 return -EIO;
608
609 if (!(val & E2P_CMD_EPC_BUSY_))
610 return 0;
611
612 usleep_range(40, 100);
613 } while (!time_after(jiffies, start_time + HZ));
614
615 netdev_warn(dev->net, "EEPROM is busy");
616 return -EIO;
617}
618
619static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset,
620 u32 length, u8 *data)
621{
622 u32 val;
623 u32 saved;
624 int i, ret;
625 int retval;
626
627 /* depends on chip, some EEPROM pins are muxed with LED function.
628 * disable & restore LED function to access EEPROM.
629 */
630 ret = lan78xx_read_reg(dev, HW_CFG, &val);
631 saved = val;
632 if (dev->chipid == ID_REV_CHIP_ID_7800_) {
633 val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
634 ret = lan78xx_write_reg(dev, HW_CFG, val);
635 }
636
637 retval = lan78xx_eeprom_confirm_not_busy(dev);
638 if (retval)
639 return retval;
640
641 for (i = 0; i < length; i++) {
642 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_;
643 val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
644 ret = lan78xx_write_reg(dev, E2P_CMD, val);
645 if (unlikely(ret < 0)) {
646 retval = -EIO;
647 goto exit;
648 }
649
650 retval = lan78xx_wait_eeprom(dev);
651 if (retval < 0)
652 goto exit;
653
654 ret = lan78xx_read_reg(dev, E2P_DATA, &val);
655 if (unlikely(ret < 0)) {
656 retval = -EIO;
657 goto exit;
658 }
659
660 data[i] = val & 0xFF;
661 offset++;
662 }
663
664 retval = 0;
665exit:
666 if (dev->chipid == ID_REV_CHIP_ID_7800_)
667 ret = lan78xx_write_reg(dev, HW_CFG, saved);
668
669 return retval;
670}
671
672static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset,
673 u32 length, u8 *data)
674{
675 u8 sig;
676 int ret;
677
678 ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig);
679 if ((ret == 0) && (sig == EEPROM_INDICATOR))
680 ret = lan78xx_read_raw_eeprom(dev, offset, length, data);
681 else
682 ret = -EINVAL;
683
684 return ret;
685}
686
687static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset,
688 u32 length, u8 *data)
689{
690 u32 val;
691 u32 saved;
692 int i, ret;
693 int retval;
694
695 /* depends on chip, some EEPROM pins are muxed with LED function.
696 * disable & restore LED function to access EEPROM.
697 */
698 ret = lan78xx_read_reg(dev, HW_CFG, &val);
699 saved = val;
700 if (dev->chipid == ID_REV_CHIP_ID_7800_) {
701 val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
702 ret = lan78xx_write_reg(dev, HW_CFG, val);
703 }
704
705 retval = lan78xx_eeprom_confirm_not_busy(dev);
706 if (retval)
707 goto exit;
708
709 /* Issue write/erase enable command */
710 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_;
711 ret = lan78xx_write_reg(dev, E2P_CMD, val);
712 if (unlikely(ret < 0)) {
713 retval = -EIO;
714 goto exit;
715 }
716
717 retval = lan78xx_wait_eeprom(dev);
718 if (retval < 0)
719 goto exit;
720
721 for (i = 0; i < length; i++) {
722 /* Fill data register */
723 val = data[i];
724 ret = lan78xx_write_reg(dev, E2P_DATA, val);
725 if (ret < 0) {
726 retval = -EIO;
727 goto exit;
728 }
729
730 /* Send "write" command */
731 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_;
732 val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
733 ret = lan78xx_write_reg(dev, E2P_CMD, val);
734 if (ret < 0) {
735 retval = -EIO;
736 goto exit;
737 }
738
739 retval = lan78xx_wait_eeprom(dev);
740 if (retval < 0)
741 goto exit;
742
743 offset++;
744 }
745
746 retval = 0;
747exit:
748 if (dev->chipid == ID_REV_CHIP_ID_7800_)
749 ret = lan78xx_write_reg(dev, HW_CFG, saved);
750
751 return retval;
752}
753
754static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset,
755 u32 length, u8 *data)
756{
757 int i;
758 int ret;
759 u32 buf;
760 unsigned long timeout;
761
762 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
763
764 if (buf & OTP_PWR_DN_PWRDN_N_) {
765 /* clear it and wait to be cleared */
766 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0);
767
768 timeout = jiffies + HZ;
769 do {
770 usleep_range(1, 10);
771 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
772 if (time_after(jiffies, timeout)) {
773 netdev_warn(dev->net,
774 "timeout on OTP_PWR_DN");
775 return -EIO;
776 }
777 } while (buf & OTP_PWR_DN_PWRDN_N_);
778 }
779
780 for (i = 0; i < length; i++) {
781 ret = lan78xx_write_reg(dev, OTP_ADDR1,
782 ((offset + i) >> 8) & OTP_ADDR1_15_11);
783 ret = lan78xx_write_reg(dev, OTP_ADDR2,
784 ((offset + i) & OTP_ADDR2_10_3));
785
786 ret = lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_);
787 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
788
789 timeout = jiffies + HZ;
790 do {
791 udelay(1);
792 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf);
793 if (time_after(jiffies, timeout)) {
794 netdev_warn(dev->net,
795 "timeout on OTP_STATUS");
796 return -EIO;
797 }
798 } while (buf & OTP_STATUS_BUSY_);
799
800 ret = lan78xx_read_reg(dev, OTP_RD_DATA, &buf);
801
802 data[i] = (u8)(buf & 0xFF);
803 }
804
805 return 0;
806}
807
808static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset,
809 u32 length, u8 *data)
810{
811 int i;
812 int ret;
813 u32 buf;
814 unsigned long timeout;
815
816 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
817
818 if (buf & OTP_PWR_DN_PWRDN_N_) {
819 /* clear it and wait to be cleared */
820 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0);
821
822 timeout = jiffies + HZ;
823 do {
824 udelay(1);
825 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
826 if (time_after(jiffies, timeout)) {
827 netdev_warn(dev->net,
828 "timeout on OTP_PWR_DN completion");
829 return -EIO;
830 }
831 } while (buf & OTP_PWR_DN_PWRDN_N_);
832 }
833
834 /* set to BYTE program mode */
835 ret = lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_);
836
837 for (i = 0; i < length; i++) {
838 ret = lan78xx_write_reg(dev, OTP_ADDR1,
839 ((offset + i) >> 8) & OTP_ADDR1_15_11);
840 ret = lan78xx_write_reg(dev, OTP_ADDR2,
841 ((offset + i) & OTP_ADDR2_10_3));
842 ret = lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]);
843 ret = lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_);
844 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
845
846 timeout = jiffies + HZ;
847 do {
848 udelay(1);
849 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf);
850 if (time_after(jiffies, timeout)) {
851 netdev_warn(dev->net,
852 "Timeout on OTP_STATUS completion");
853 return -EIO;
854 }
855 } while (buf & OTP_STATUS_BUSY_);
856 }
857
858 return 0;
859}
860
861static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset,
862 u32 length, u8 *data)
863{
864 u8 sig;
865 int ret;
866
867 ret = lan78xx_read_raw_otp(dev, 0, 1, &sig);
868
869 if (ret == 0) {
870 if (sig == OTP_INDICATOR_1)
871 offset = offset;
872 else if (sig == OTP_INDICATOR_2)
873 offset += 0x100;
874 else
875 ret = -EINVAL;
876 ret = lan78xx_read_raw_otp(dev, offset, length, data);
877 }
878
879 return ret;
880}
881
882static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev)
883{
884 int i, ret;
885
886 for (i = 0; i < 100; i++) {
887 u32 dp_sel;
888
889 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
890 if (unlikely(ret < 0))
891 return -EIO;
892
893 if (dp_sel & DP_SEL_DPRDY_)
894 return 0;
895
896 usleep_range(40, 100);
897 }
898
899 netdev_warn(dev->net, "lan78xx_dataport_wait_not_busy timed out");
900
901 return -EIO;
902}
903
904static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select,
905 u32 addr, u32 length, u32 *buf)
906{
907 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
908 u32 dp_sel;
909 int i, ret;
910
911 if (usb_autopm_get_interface(dev->intf) < 0)
912 return 0;
913
914 mutex_lock(&pdata->dataport_mutex);
915
916 ret = lan78xx_dataport_wait_not_busy(dev);
917 if (ret < 0)
918 goto done;
919
920 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
921
922 dp_sel &= ~DP_SEL_RSEL_MASK_;
923 dp_sel |= ram_select;
924 ret = lan78xx_write_reg(dev, DP_SEL, dp_sel);
925
926 for (i = 0; i < length; i++) {
927 ret = lan78xx_write_reg(dev, DP_ADDR, addr + i);
928
929 ret = lan78xx_write_reg(dev, DP_DATA, buf[i]);
930
931 ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_);
932
933 ret = lan78xx_dataport_wait_not_busy(dev);
934 if (ret < 0)
935 goto done;
936 }
937
938done:
939 mutex_unlock(&pdata->dataport_mutex);
940 usb_autopm_put_interface(dev->intf);
941
942 return ret;
943}
944
945static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata,
946 int index, u8 addr[ETH_ALEN])
947{
948 u32 temp;
949
950 if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) {
951 temp = addr[3];
952 temp = addr[2] | (temp << 8);
953 temp = addr[1] | (temp << 8);
954 temp = addr[0] | (temp << 8);
955 pdata->pfilter_table[index][1] = temp;
956 temp = addr[5];
957 temp = addr[4] | (temp << 8);
958 temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_;
959 pdata->pfilter_table[index][0] = temp;
960 }
961}
962
963/* returns hash bit number for given MAC address */
964static inline u32 lan78xx_hash(char addr[ETH_ALEN])
965{
966 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
967}
968
969static void lan78xx_deferred_multicast_write(struct work_struct *param)
970{
971 struct lan78xx_priv *pdata =
972 container_of(param, struct lan78xx_priv, set_multicast);
973 struct lan78xx_net *dev = pdata->dev;
974 int i;
975 int ret;
976
977 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
978 pdata->rfe_ctl);
979
980 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN,
981 DP_SEL_VHF_HASH_LEN, pdata->mchash_table);
982
983 for (i = 1; i < NUM_OF_MAF; i++) {
984 ret = lan78xx_write_reg(dev, MAF_HI(i), 0);
985 ret = lan78xx_write_reg(dev, MAF_LO(i),
986 pdata->pfilter_table[i][1]);
987 ret = lan78xx_write_reg(dev, MAF_HI(i),
988 pdata->pfilter_table[i][0]);
989 }
990
991 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
992}
993
994static void lan78xx_set_multicast(struct net_device *netdev)
995{
996 struct lan78xx_net *dev = netdev_priv(netdev);
997 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
998 unsigned long flags;
999 int i;
1000
1001 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
1002
1003 pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ |
1004 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1005
1006 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
1007 pdata->mchash_table[i] = 0;
1008 /* pfilter_table[0] has own HW address */
1009 for (i = 1; i < NUM_OF_MAF; i++) {
1010 pdata->pfilter_table[i][0] =
1011 pdata->pfilter_table[i][1] = 0;
1012 }
1013
1014 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_;
1015
1016 if (dev->net->flags & IFF_PROMISC) {
1017 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled");
1018 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_;
1019 } else {
1020 if (dev->net->flags & IFF_ALLMULTI) {
1021 netif_dbg(dev, drv, dev->net,
1022 "receive all multicast enabled");
1023 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_;
1024 }
1025 }
1026
1027 if (netdev_mc_count(dev->net)) {
1028 struct netdev_hw_addr *ha;
1029 int i;
1030
1031 netif_dbg(dev, drv, dev->net, "receive multicast hash filter");
1032
1033 pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_;
1034
1035 i = 1;
1036 netdev_for_each_mc_addr(ha, netdev) {
1037 /* set first 32 into Perfect Filter */
1038 if (i < 33) {
1039 lan78xx_set_addr_filter(pdata, i, ha->addr);
1040 } else {
1041 u32 bitnum = lan78xx_hash(ha->addr);
1042
1043 pdata->mchash_table[bitnum / 32] |=
1044 (1 << (bitnum % 32));
1045 pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_;
1046 }
1047 i++;
1048 }
1049 }
1050
1051 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
1052
1053 /* defer register writes to a sleepable context */
1054 schedule_work(&pdata->set_multicast);
1055}
1056
1057static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex,
1058 u16 lcladv, u16 rmtadv)
1059{
1060 u32 flow = 0, fct_flow = 0;
1061 int ret;
1062 u8 cap;
1063
1064 if (dev->fc_autoneg)
1065 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
1066 else
1067 cap = dev->fc_request_control;
1068
1069 if (cap & FLOW_CTRL_TX)
1070 flow |= (FLOW_CR_TX_FCEN_ | 0xFFFF);
1071
1072 if (cap & FLOW_CTRL_RX)
1073 flow |= FLOW_CR_RX_FCEN_;
1074
1075 if (dev->udev->speed == USB_SPEED_SUPER)
1076 fct_flow = 0x817;
1077 else if (dev->udev->speed == USB_SPEED_HIGH)
1078 fct_flow = 0x211;
1079
1080 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s",
1081 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
1082 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
1083
1084 ret = lan78xx_write_reg(dev, FCT_FLOW, fct_flow);
1085
1086 /* threshold value should be set before enabling flow */
1087 ret = lan78xx_write_reg(dev, FLOW, flow);
1088
1089 return 0;
1090}
1091
1092static int lan78xx_link_reset(struct lan78xx_net *dev)
1093{
1094 struct phy_device *phydev = dev->net->phydev;
1095 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
1096 int ladv, radv, ret;
1097 u32 buf;
1098
1099 /* clear PHY interrupt status */
1100 ret = phy_read(phydev, LAN88XX_INT_STS);
1101 if (unlikely(ret < 0))
1102 return -EIO;
1103
1104 /* clear LAN78xx interrupt status */
1105 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_);
1106 if (unlikely(ret < 0))
1107 return -EIO;
1108
1109 phy_read_status(phydev);
1110
1111 if (!phydev->link && dev->link_on) {
1112 dev->link_on = false;
1113
1114 /* reset MAC */
1115 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1116 if (unlikely(ret < 0))
1117 return -EIO;
1118 buf |= MAC_CR_RST_;
1119 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1120 if (unlikely(ret < 0))
1121 return -EIO;
1122
1123 phy_mac_interrupt(phydev, 0);
1124
1125 del_timer(&dev->stat_monitor);
1126 } else if (phydev->link && !dev->link_on) {
1127 dev->link_on = true;
1128
1129 phy_ethtool_gset(phydev, &ecmd);
1130
1131 ret = phy_read(phydev, LAN88XX_INT_STS);
1132
1133 if (dev->udev->speed == USB_SPEED_SUPER) {
1134 if (ethtool_cmd_speed(&ecmd) == 1000) {
1135 /* disable U2 */
1136 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1137 buf &= ~USB_CFG1_DEV_U2_INIT_EN_;
1138 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1139 /* enable U1 */
1140 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1141 buf |= USB_CFG1_DEV_U1_INIT_EN_;
1142 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1143 } else {
1144 /* enable U1 & U2 */
1145 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1146 buf |= USB_CFG1_DEV_U2_INIT_EN_;
1147 buf |= USB_CFG1_DEV_U1_INIT_EN_;
1148 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1149 }
1150 }
1151
1152 ladv = phy_read(phydev, MII_ADVERTISE);
1153 if (ladv < 0)
1154 return ladv;
1155
1156 radv = phy_read(phydev, MII_LPA);
1157 if (radv < 0)
1158 return radv;
1159
1160 netif_dbg(dev, link, dev->net,
1161 "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x",
1162 ethtool_cmd_speed(&ecmd), ecmd.duplex, ladv, radv);
1163
1164 ret = lan78xx_update_flowcontrol(dev, ecmd.duplex, ladv, radv);
1165 phy_mac_interrupt(phydev, 1);
1166
1167 if (!timer_pending(&dev->stat_monitor)) {
1168 dev->delta = 1;
1169 mod_timer(&dev->stat_monitor,
1170 jiffies + STAT_UPDATE_TIMER);
1171 }
1172 }
1173
1174 return ret;
1175}
1176
1177/* some work can't be done in tasklets, so we use keventd
1178 *
1179 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
1180 * but tasklet_schedule() doesn't. hope the failure is rare.
1181 */
1182void lan78xx_defer_kevent(struct lan78xx_net *dev, int work)
1183{
1184 set_bit(work, &dev->flags);
1185 if (!schedule_delayed_work(&dev->wq, 0))
1186 netdev_err(dev->net, "kevent %d may have been dropped\n", work);
1187}
1188
1189static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb)
1190{
1191 u32 intdata;
1192
1193 if (urb->actual_length != 4) {
1194 netdev_warn(dev->net,
1195 "unexpected urb length %d", urb->actual_length);
1196 return;
1197 }
1198
1199 memcpy(&intdata, urb->transfer_buffer, 4);
1200 le32_to_cpus(&intdata);
1201
1202 if (intdata & INT_ENP_PHY_INT) {
1203 netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata);
1204 lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
1205 } else
1206 netdev_warn(dev->net,
1207 "unexpected interrupt: 0x%08x\n", intdata);
1208}
1209
1210static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev)
1211{
1212 return MAX_EEPROM_SIZE;
1213}
1214
1215static int lan78xx_ethtool_get_eeprom(struct net_device *netdev,
1216 struct ethtool_eeprom *ee, u8 *data)
1217{
1218 struct lan78xx_net *dev = netdev_priv(netdev);
1219
1220 ee->magic = LAN78XX_EEPROM_MAGIC;
1221
1222 return lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data);
1223}
1224
1225static int lan78xx_ethtool_set_eeprom(struct net_device *netdev,
1226 struct ethtool_eeprom *ee, u8 *data)
1227{
1228 struct lan78xx_net *dev = netdev_priv(netdev);
1229
1230 /* Allow entire eeprom update only */
1231 if ((ee->magic == LAN78XX_EEPROM_MAGIC) &&
1232 (ee->offset == 0) &&
1233 (ee->len == 512) &&
1234 (data[0] == EEPROM_INDICATOR))
1235 return lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data);
1236 else if ((ee->magic == LAN78XX_OTP_MAGIC) &&
1237 (ee->offset == 0) &&
1238 (ee->len == 512) &&
1239 (data[0] == OTP_INDICATOR_1))
1240 return lan78xx_write_raw_otp(dev, ee->offset, ee->len, data);
1241
1242 return -EINVAL;
1243}
1244
1245static void lan78xx_get_strings(struct net_device *netdev, u32 stringset,
1246 u8 *data)
1247{
1248 if (stringset == ETH_SS_STATS)
1249 memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings));
1250}
1251
1252static int lan78xx_get_sset_count(struct net_device *netdev, int sset)
1253{
1254 if (sset == ETH_SS_STATS)
1255 return ARRAY_SIZE(lan78xx_gstrings);
1256 else
1257 return -EOPNOTSUPP;
1258}
1259
1260static void lan78xx_get_stats(struct net_device *netdev,
1261 struct ethtool_stats *stats, u64 *data)
1262{
1263 struct lan78xx_net *dev = netdev_priv(netdev);
1264
1265 lan78xx_update_stats(dev);
1266
1267 mutex_lock(&dev->stats.access_lock);
1268 memcpy(data, &dev->stats.curr_stat, sizeof(dev->stats.curr_stat));
1269 mutex_unlock(&dev->stats.access_lock);
1270}
1271
1272static void lan78xx_get_wol(struct net_device *netdev,
1273 struct ethtool_wolinfo *wol)
1274{
1275 struct lan78xx_net *dev = netdev_priv(netdev);
1276 int ret;
1277 u32 buf;
1278 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1279
1280 if (usb_autopm_get_interface(dev->intf) < 0)
1281 return;
1282
1283 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
1284 if (unlikely(ret < 0)) {
1285 wol->supported = 0;
1286 wol->wolopts = 0;
1287 } else {
1288 if (buf & USB_CFG_RMT_WKP_) {
1289 wol->supported = WAKE_ALL;
1290 wol->wolopts = pdata->wol;
1291 } else {
1292 wol->supported = 0;
1293 wol->wolopts = 0;
1294 }
1295 }
1296
1297 usb_autopm_put_interface(dev->intf);
1298}
1299
1300static int lan78xx_set_wol(struct net_device *netdev,
1301 struct ethtool_wolinfo *wol)
1302{
1303 struct lan78xx_net *dev = netdev_priv(netdev);
1304 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1305 int ret;
1306
1307 ret = usb_autopm_get_interface(dev->intf);
1308 if (ret < 0)
1309 return ret;
1310
1311 pdata->wol = 0;
1312 if (wol->wolopts & WAKE_UCAST)
1313 pdata->wol |= WAKE_UCAST;
1314 if (wol->wolopts & WAKE_MCAST)
1315 pdata->wol |= WAKE_MCAST;
1316 if (wol->wolopts & WAKE_BCAST)
1317 pdata->wol |= WAKE_BCAST;
1318 if (wol->wolopts & WAKE_MAGIC)
1319 pdata->wol |= WAKE_MAGIC;
1320 if (wol->wolopts & WAKE_PHY)
1321 pdata->wol |= WAKE_PHY;
1322 if (wol->wolopts & WAKE_ARP)
1323 pdata->wol |= WAKE_ARP;
1324
1325 device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);
1326
1327 phy_ethtool_set_wol(netdev->phydev, wol);
1328
1329 usb_autopm_put_interface(dev->intf);
1330
1331 return ret;
1332}
1333
1334static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata)
1335{
1336 struct lan78xx_net *dev = netdev_priv(net);
1337 struct phy_device *phydev = net->phydev;
1338 int ret;
1339 u32 buf;
1340
1341 ret = usb_autopm_get_interface(dev->intf);
1342 if (ret < 0)
1343 return ret;
1344
1345 ret = phy_ethtool_get_eee(phydev, edata);
1346 if (ret < 0)
1347 goto exit;
1348
1349 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1350 if (buf & MAC_CR_EEE_EN_) {
1351 edata->eee_enabled = true;
1352 edata->eee_active = !!(edata->advertised &
1353 edata->lp_advertised);
1354 edata->tx_lpi_enabled = true;
1355 /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */
1356 ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf);
1357 edata->tx_lpi_timer = buf;
1358 } else {
1359 edata->eee_enabled = false;
1360 edata->eee_active = false;
1361 edata->tx_lpi_enabled = false;
1362 edata->tx_lpi_timer = 0;
1363 }
1364
1365 ret = 0;
1366exit:
1367 usb_autopm_put_interface(dev->intf);
1368
1369 return ret;
1370}
1371
1372static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata)
1373{
1374 struct lan78xx_net *dev = netdev_priv(net);
1375 int ret;
1376 u32 buf;
1377
1378 ret = usb_autopm_get_interface(dev->intf);
1379 if (ret < 0)
1380 return ret;
1381
1382 if (edata->eee_enabled) {
1383 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1384 buf |= MAC_CR_EEE_EN_;
1385 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1386
1387 phy_ethtool_set_eee(net->phydev, edata);
1388
1389 buf = (u32)edata->tx_lpi_timer;
1390 ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf);
1391 } else {
1392 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1393 buf &= ~MAC_CR_EEE_EN_;
1394 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1395 }
1396
1397 usb_autopm_put_interface(dev->intf);
1398
1399 return 0;
1400}
1401
1402static u32 lan78xx_get_link(struct net_device *net)
1403{
1404 phy_read_status(net->phydev);
1405
1406 return net->phydev->link;
1407}
1408
1409int lan78xx_nway_reset(struct net_device *net)
1410{
1411 return phy_start_aneg(net->phydev);
1412}
1413
1414static void lan78xx_get_drvinfo(struct net_device *net,
1415 struct ethtool_drvinfo *info)
1416{
1417 struct lan78xx_net *dev = netdev_priv(net);
1418
1419 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
1420 strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
1421 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));
1422}
1423
1424static u32 lan78xx_get_msglevel(struct net_device *net)
1425{
1426 struct lan78xx_net *dev = netdev_priv(net);
1427
1428 return dev->msg_enable;
1429}
1430
1431static void lan78xx_set_msglevel(struct net_device *net, u32 level)
1432{
1433 struct lan78xx_net *dev = netdev_priv(net);
1434
1435 dev->msg_enable = level;
1436}
1437
1438static int lan78xx_get_mdix_status(struct net_device *net)
1439{
1440 struct phy_device *phydev = net->phydev;
1441 int buf;
1442
1443 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, LAN88XX_EXT_PAGE_SPACE_1);
1444 buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL);
1445 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS, LAN88XX_EXT_PAGE_SPACE_0);
1446
1447 return buf;
1448}
1449
1450static void lan78xx_set_mdix_status(struct net_device *net, __u8 mdix_ctrl)
1451{
1452 struct lan78xx_net *dev = netdev_priv(net);
1453 struct phy_device *phydev = net->phydev;
1454 int buf;
1455
1456 if (mdix_ctrl == ETH_TP_MDI) {
1457 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1458 LAN88XX_EXT_PAGE_SPACE_1);
1459 buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL);
1460 buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_;
1461 phy_write(phydev, LAN88XX_EXT_MODE_CTRL,
1462 buf | LAN88XX_EXT_MODE_CTRL_MDI_);
1463 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1464 LAN88XX_EXT_PAGE_SPACE_0);
1465 } else if (mdix_ctrl == ETH_TP_MDI_X) {
1466 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1467 LAN88XX_EXT_PAGE_SPACE_1);
1468 buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL);
1469 buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_;
1470 phy_write(phydev, LAN88XX_EXT_MODE_CTRL,
1471 buf | LAN88XX_EXT_MODE_CTRL_MDI_X_);
1472 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1473 LAN88XX_EXT_PAGE_SPACE_0);
1474 } else if (mdix_ctrl == ETH_TP_MDI_AUTO) {
1475 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1476 LAN88XX_EXT_PAGE_SPACE_1);
1477 buf = phy_read(phydev, LAN88XX_EXT_MODE_CTRL);
1478 buf &= ~LAN88XX_EXT_MODE_CTRL_MDIX_MASK_;
1479 phy_write(phydev, LAN88XX_EXT_MODE_CTRL,
1480 buf | LAN88XX_EXT_MODE_CTRL_AUTO_MDIX_);
1481 phy_write(phydev, LAN88XX_EXT_PAGE_ACCESS,
1482 LAN88XX_EXT_PAGE_SPACE_0);
1483 }
1484 dev->mdix_ctrl = mdix_ctrl;
1485}
1486
1487static int lan78xx_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
1488{
1489 struct lan78xx_net *dev = netdev_priv(net);
1490 struct phy_device *phydev = net->phydev;
1491 int ret;
1492 int buf;
1493
1494 ret = usb_autopm_get_interface(dev->intf);
1495 if (ret < 0)
1496 return ret;
1497
1498 ret = phy_ethtool_gset(phydev, cmd);
1499
1500 buf = lan78xx_get_mdix_status(net);
1501
1502 buf &= LAN88XX_EXT_MODE_CTRL_MDIX_MASK_;
1503 if (buf == LAN88XX_EXT_MODE_CTRL_AUTO_MDIX_) {
1504 cmd->eth_tp_mdix = ETH_TP_MDI_AUTO;
1505 cmd->eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
1506 } else if (buf == LAN88XX_EXT_MODE_CTRL_MDI_) {
1507 cmd->eth_tp_mdix = ETH_TP_MDI;
1508 cmd->eth_tp_mdix_ctrl = ETH_TP_MDI;
1509 } else if (buf == LAN88XX_EXT_MODE_CTRL_MDI_X_) {
1510 cmd->eth_tp_mdix = ETH_TP_MDI_X;
1511 cmd->eth_tp_mdix_ctrl = ETH_TP_MDI_X;
1512 }
1513
1514 usb_autopm_put_interface(dev->intf);
1515
1516 return ret;
1517}
1518
1519static int lan78xx_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
1520{
1521 struct lan78xx_net *dev = netdev_priv(net);
1522 struct phy_device *phydev = net->phydev;
1523 int ret = 0;
1524 int temp;
1525
1526 ret = usb_autopm_get_interface(dev->intf);
1527 if (ret < 0)
1528 return ret;
1529
1530 if (dev->mdix_ctrl != cmd->eth_tp_mdix_ctrl) {
1531 lan78xx_set_mdix_status(net, cmd->eth_tp_mdix_ctrl);
1532 }
1533
1534 /* change speed & duplex */
1535 ret = phy_ethtool_sset(phydev, cmd);
1536
1537 if (!cmd->autoneg) {
1538 /* force link down */
1539 temp = phy_read(phydev, MII_BMCR);
1540 phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK);
1541 mdelay(1);
1542 phy_write(phydev, MII_BMCR, temp);
1543 }
1544
1545 usb_autopm_put_interface(dev->intf);
1546
1547 return ret;
1548}
1549
1550static void lan78xx_get_pause(struct net_device *net,
1551 struct ethtool_pauseparam *pause)
1552{
1553 struct lan78xx_net *dev = netdev_priv(net);
1554 struct phy_device *phydev = net->phydev;
1555 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
1556
1557 phy_ethtool_gset(phydev, &ecmd);
1558
1559 pause->autoneg = dev->fc_autoneg;
1560
1561 if (dev->fc_request_control & FLOW_CTRL_TX)
1562 pause->tx_pause = 1;
1563
1564 if (dev->fc_request_control & FLOW_CTRL_RX)
1565 pause->rx_pause = 1;
1566}
1567
1568static int lan78xx_set_pause(struct net_device *net,
1569 struct ethtool_pauseparam *pause)
1570{
1571 struct lan78xx_net *dev = netdev_priv(net);
1572 struct phy_device *phydev = net->phydev;
1573 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
1574 int ret;
1575
1576 phy_ethtool_gset(phydev, &ecmd);
1577
1578 if (pause->autoneg && !ecmd.autoneg) {
1579 ret = -EINVAL;
1580 goto exit;
1581 }
1582
1583 dev->fc_request_control = 0;
1584 if (pause->rx_pause)
1585 dev->fc_request_control |= FLOW_CTRL_RX;
1586
1587 if (pause->tx_pause)
1588 dev->fc_request_control |= FLOW_CTRL_TX;
1589
1590 if (ecmd.autoneg) {
1591 u32 mii_adv;
1592
1593 ecmd.advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
1594 mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
1595 ecmd.advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
1596 phy_ethtool_sset(phydev, &ecmd);
1597 }
1598
1599 dev->fc_autoneg = pause->autoneg;
1600
1601 ret = 0;
1602exit:
1603 return ret;
1604}
1605
1606static const struct ethtool_ops lan78xx_ethtool_ops = {
1607 .get_link = lan78xx_get_link,
1608 .nway_reset = lan78xx_nway_reset,
1609 .get_drvinfo = lan78xx_get_drvinfo,
1610 .get_msglevel = lan78xx_get_msglevel,
1611 .set_msglevel = lan78xx_set_msglevel,
1612 .get_settings = lan78xx_get_settings,
1613 .set_settings = lan78xx_set_settings,
1614 .get_eeprom_len = lan78xx_ethtool_get_eeprom_len,
1615 .get_eeprom = lan78xx_ethtool_get_eeprom,
1616 .set_eeprom = lan78xx_ethtool_set_eeprom,
1617 .get_ethtool_stats = lan78xx_get_stats,
1618 .get_sset_count = lan78xx_get_sset_count,
1619 .get_strings = lan78xx_get_strings,
1620 .get_wol = lan78xx_get_wol,
1621 .set_wol = lan78xx_set_wol,
1622 .get_eee = lan78xx_get_eee,
1623 .set_eee = lan78xx_set_eee,
1624 .get_pauseparam = lan78xx_get_pause,
1625 .set_pauseparam = lan78xx_set_pause,
1626};
1627
1628static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
1629{
1630 if (!netif_running(netdev))
1631 return -EINVAL;
1632
1633 return phy_mii_ioctl(netdev->phydev, rq, cmd);
1634}
1635
1636static void lan78xx_init_mac_address(struct lan78xx_net *dev)
1637{
1638 u32 addr_lo, addr_hi;
1639 int ret;
1640 u8 addr[6];
1641
1642 ret = lan78xx_read_reg(dev, RX_ADDRL, &addr_lo);
1643 ret = lan78xx_read_reg(dev, RX_ADDRH, &addr_hi);
1644
1645 addr[0] = addr_lo & 0xFF;
1646 addr[1] = (addr_lo >> 8) & 0xFF;
1647 addr[2] = (addr_lo >> 16) & 0xFF;
1648 addr[3] = (addr_lo >> 24) & 0xFF;
1649 addr[4] = addr_hi & 0xFF;
1650 addr[5] = (addr_hi >> 8) & 0xFF;
1651
1652 if (!is_valid_ether_addr(addr)) {
1653 /* reading mac address from EEPROM or OTP */
1654 if ((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
1655 addr) == 0) ||
1656 (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
1657 addr) == 0)) {
1658 if (is_valid_ether_addr(addr)) {
1659 /* eeprom values are valid so use them */
1660 netif_dbg(dev, ifup, dev->net,
1661 "MAC address read from EEPROM");
1662 } else {
1663 /* generate random MAC */
1664 random_ether_addr(addr);
1665 netif_dbg(dev, ifup, dev->net,
1666 "MAC address set to random addr");
1667 }
1668
1669 addr_lo = addr[0] | (addr[1] << 8) |
1670 (addr[2] << 16) | (addr[3] << 24);
1671 addr_hi = addr[4] | (addr[5] << 8);
1672
1673 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
1674 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
1675 } else {
1676 /* generate random MAC */
1677 random_ether_addr(addr);
1678 netif_dbg(dev, ifup, dev->net,
1679 "MAC address set to random addr");
1680 }
1681 }
1682
1683 ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo);
1684 ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_);
1685
1686 ether_addr_copy(dev->net->dev_addr, addr);
1687}
1688
1689/* MDIO read and write wrappers for phylib */
1690static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx)
1691{
1692 struct lan78xx_net *dev = bus->priv;
1693 u32 val, addr;
1694 int ret;
1695
1696 ret = usb_autopm_get_interface(dev->intf);
1697 if (ret < 0)
1698 return ret;
1699
1700 mutex_lock(&dev->phy_mutex);
1701
1702 /* confirm MII not busy */
1703 ret = lan78xx_phy_wait_not_busy(dev);
1704 if (ret < 0)
1705 goto done;
1706
1707 /* set the address, index & direction (read from PHY) */
1708 addr = mii_access(phy_id, idx, MII_READ);
1709 ret = lan78xx_write_reg(dev, MII_ACC, addr);
1710
1711 ret = lan78xx_phy_wait_not_busy(dev);
1712 if (ret < 0)
1713 goto done;
1714
1715 ret = lan78xx_read_reg(dev, MII_DATA, &val);
1716
1717 ret = (int)(val & 0xFFFF);
1718
1719done:
1720 mutex_unlock(&dev->phy_mutex);
1721 usb_autopm_put_interface(dev->intf);
1722 return ret;
1723}
1724
1725static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,
1726 u16 regval)
1727{
1728 struct lan78xx_net *dev = bus->priv;
1729 u32 val, addr;
1730 int ret;
1731
1732 ret = usb_autopm_get_interface(dev->intf);
1733 if (ret < 0)
1734 return ret;
1735
1736 mutex_lock(&dev->phy_mutex);
1737
1738 /* confirm MII not busy */
1739 ret = lan78xx_phy_wait_not_busy(dev);
1740 if (ret < 0)
1741 goto done;
1742
1743 val = (u32)regval;
1744 ret = lan78xx_write_reg(dev, MII_DATA, val);
1745
1746 /* set the address, index & direction (write to PHY) */
1747 addr = mii_access(phy_id, idx, MII_WRITE);
1748 ret = lan78xx_write_reg(dev, MII_ACC, addr);
1749
1750 ret = lan78xx_phy_wait_not_busy(dev);
1751 if (ret < 0)
1752 goto done;
1753
1754done:
1755 mutex_unlock(&dev->phy_mutex);
1756 usb_autopm_put_interface(dev->intf);
1757 return 0;
1758}
1759
1760static int lan78xx_mdio_init(struct lan78xx_net *dev)
1761{
1762 int ret;
1763
1764 dev->mdiobus = mdiobus_alloc();
1765 if (!dev->mdiobus) {
1766 netdev_err(dev->net, "can't allocate MDIO bus\n");
1767 return -ENOMEM;
1768 }
1769
1770 dev->mdiobus->priv = (void *)dev;
1771 dev->mdiobus->read = lan78xx_mdiobus_read;
1772 dev->mdiobus->write = lan78xx_mdiobus_write;
1773 dev->mdiobus->name = "lan78xx-mdiobus";
1774
1775 snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
1776 dev->udev->bus->busnum, dev->udev->devnum);
1777
1778 switch (dev->chipid) {
1779 case ID_REV_CHIP_ID_7800_:
1780 case ID_REV_CHIP_ID_7850_:
1781 /* set to internal PHY id */
1782 dev->mdiobus->phy_mask = ~(1 << 1);
1783 break;
1784 }
1785
1786 ret = mdiobus_register(dev->mdiobus);
1787 if (ret) {
1788 netdev_err(dev->net, "can't register MDIO bus\n");
1789 goto exit1;
1790 }
1791
1792 netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id);
1793 return 0;
1794exit1:
1795 mdiobus_free(dev->mdiobus);
1796 return ret;
1797}
1798
1799static void lan78xx_remove_mdio(struct lan78xx_net *dev)
1800{
1801 mdiobus_unregister(dev->mdiobus);
1802 mdiobus_free(dev->mdiobus);
1803}
1804
1805static void lan78xx_link_status_change(struct net_device *net)
1806{
1807 struct phy_device *phydev = net->phydev;
1808 int ret, temp;
1809
1810 /* At forced 100 F/H mode, chip may fail to set mode correctly
1811 * when cable is switched between long(~50+m) and short one.
1812 * As workaround, set to 10 before setting to 100
1813 * at forced 100 F/H mode.
1814 */
1815 if (!phydev->autoneg && (phydev->speed == 100)) {
1816 /* disable phy interrupt */
1817 temp = phy_read(phydev, LAN88XX_INT_MASK);
1818 temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_;
1819 ret = phy_write(phydev, LAN88XX_INT_MASK, temp);
1820
1821 temp = phy_read(phydev, MII_BMCR);
1822 temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000);
1823 phy_write(phydev, MII_BMCR, temp); /* set to 10 first */
1824 temp |= BMCR_SPEED100;
1825 phy_write(phydev, MII_BMCR, temp); /* set to 100 later */
1826
1827 /* clear pending interrupt generated while workaround */
1828 temp = phy_read(phydev, LAN88XX_INT_STS);
1829
1830 /* enable phy interrupt back */
1831 temp = phy_read(phydev, LAN88XX_INT_MASK);
1832 temp |= LAN88XX_INT_MASK_MDINTPIN_EN_;
1833 ret = phy_write(phydev, LAN88XX_INT_MASK, temp);
1834 }
1835}
1836
1837static int lan78xx_phy_init(struct lan78xx_net *dev)
1838{
1839 int ret;
1840 u32 mii_adv;
1841 struct phy_device *phydev = dev->net->phydev;
1842
1843 phydev = phy_find_first(dev->mdiobus);
1844 if (!phydev) {
1845 netdev_err(dev->net, "no PHY found\n");
1846 return -EIO;
1847 }
1848
1849 /* Enable PHY interrupts.
1850 * We handle our own interrupt
1851 */
1852 ret = phy_read(phydev, LAN88XX_INT_STS);
1853 ret = phy_write(phydev, LAN88XX_INT_MASK,
1854 LAN88XX_INT_MASK_MDINTPIN_EN_ |
1855 LAN88XX_INT_MASK_LINK_CHANGE_);
1856
1857 phydev->irq = PHY_IGNORE_INTERRUPT;
1858
1859 ret = phy_connect_direct(dev->net, phydev,
1860 lan78xx_link_status_change,
1861 PHY_INTERFACE_MODE_GMII);
1862 if (ret) {
1863 netdev_err(dev->net, "can't attach PHY to %s\n",
1864 dev->mdiobus->id);
1865 return -EIO;
1866 }
1867
1868 /* set to AUTOMDIX */
1869 lan78xx_set_mdix_status(dev->net, ETH_TP_MDI_AUTO);
1870
1871 /* MAC doesn't support 1000T Half */
1872 phydev->supported &= ~SUPPORTED_1000baseT_Half;
1873
1874 /* support both flow controls */
1875 dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
1876 phydev->advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
1877 mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
1878 phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
1879
1880 genphy_config_aneg(phydev);
1881
1882 dev->fc_autoneg = phydev->autoneg;
1883
1884 phy_start(phydev);
1885
1886 netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
1887
1888 return 0;
1889}
1890
1891static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size)
1892{
1893 int ret = 0;
1894 u32 buf;
1895 bool rxenabled;
1896
1897 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
1898
1899 rxenabled = ((buf & MAC_RX_RXEN_) != 0);
1900
1901 if (rxenabled) {
1902 buf &= ~MAC_RX_RXEN_;
1903 ret = lan78xx_write_reg(dev, MAC_RX, buf);
1904 }
1905
1906 /* add 4 to size for FCS */
1907 buf &= ~MAC_RX_MAX_SIZE_MASK_;
1908 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_);
1909
1910 ret = lan78xx_write_reg(dev, MAC_RX, buf);
1911
1912 if (rxenabled) {
1913 buf |= MAC_RX_RXEN_;
1914 ret = lan78xx_write_reg(dev, MAC_RX, buf);
1915 }
1916
1917 return 0;
1918}
1919
1920static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q)
1921{
1922 struct sk_buff *skb;
1923 unsigned long flags;
1924 int count = 0;
1925
1926 spin_lock_irqsave(&q->lock, flags);
1927 while (!skb_queue_empty(q)) {
1928 struct skb_data *entry;
1929 struct urb *urb;
1930 int ret;
1931
1932 skb_queue_walk(q, skb) {
1933 entry = (struct skb_data *)skb->cb;
1934 if (entry->state != unlink_start)
1935 goto found;
1936 }
1937 break;
1938found:
1939 entry->state = unlink_start;
1940 urb = entry->urb;
1941
1942 /* Get reference count of the URB to avoid it to be
1943 * freed during usb_unlink_urb, which may trigger
1944 * use-after-free problem inside usb_unlink_urb since
1945 * usb_unlink_urb is always racing with .complete
1946 * handler(include defer_bh).
1947 */
1948 usb_get_urb(urb);
1949 spin_unlock_irqrestore(&q->lock, flags);
1950 /* during some PM-driven resume scenarios,
1951 * these (async) unlinks complete immediately
1952 */
1953 ret = usb_unlink_urb(urb);
1954 if (ret != -EINPROGRESS && ret != 0)
1955 netdev_dbg(dev->net, "unlink urb err, %d\n", ret);
1956 else
1957 count++;
1958 usb_put_urb(urb);
1959 spin_lock_irqsave(&q->lock, flags);
1960 }
1961 spin_unlock_irqrestore(&q->lock, flags);
1962 return count;
1963}
1964
1965static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu)
1966{
1967 struct lan78xx_net *dev = netdev_priv(netdev);
1968 int ll_mtu = new_mtu + netdev->hard_header_len;
1969 int old_hard_mtu = dev->hard_mtu;
1970 int old_rx_urb_size = dev->rx_urb_size;
1971 int ret;
1972
1973 if (new_mtu > MAX_SINGLE_PACKET_SIZE)
1974 return -EINVAL;
1975
1976 if (new_mtu <= 0)
1977 return -EINVAL;
1978 /* no second zero-length packet read wanted after mtu-sized packets */
1979 if ((ll_mtu % dev->maxpacket) == 0)
1980 return -EDOM;
1981
1982 ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
1983
1984 netdev->mtu = new_mtu;
1985
1986 dev->hard_mtu = netdev->mtu + netdev->hard_header_len;
1987 if (dev->rx_urb_size == old_hard_mtu) {
1988 dev->rx_urb_size = dev->hard_mtu;
1989 if (dev->rx_urb_size > old_rx_urb_size) {
1990 if (netif_running(dev->net)) {
1991 unlink_urbs(dev, &dev->rxq);
1992 tasklet_schedule(&dev->bh);
1993 }
1994 }
1995 }
1996
1997 return 0;
1998}
1999
2000int lan78xx_set_mac_addr(struct net_device *netdev, void *p)
2001{
2002 struct lan78xx_net *dev = netdev_priv(netdev);
2003 struct sockaddr *addr = p;
2004 u32 addr_lo, addr_hi;
2005 int ret;
2006
2007 if (netif_running(netdev))
2008 return -EBUSY;
2009
2010 if (!is_valid_ether_addr(addr->sa_data))
2011 return -EADDRNOTAVAIL;
2012
2013 ether_addr_copy(netdev->dev_addr, addr->sa_data);
2014
2015 addr_lo = netdev->dev_addr[0] |
2016 netdev->dev_addr[1] << 8 |
2017 netdev->dev_addr[2] << 16 |
2018 netdev->dev_addr[3] << 24;
2019 addr_hi = netdev->dev_addr[4] |
2020 netdev->dev_addr[5] << 8;
2021
2022 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
2023 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
2024
2025 return 0;
2026}
2027
2028/* Enable or disable Rx checksum offload engine */
2029static int lan78xx_set_features(struct net_device *netdev,
2030 netdev_features_t features)
2031{
2032 struct lan78xx_net *dev = netdev_priv(netdev);
2033 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2034 unsigned long flags;
2035 int ret;
2036
2037 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
2038
2039 if (features & NETIF_F_RXCSUM) {
2040 pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_;
2041 pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_;
2042 } else {
2043 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_);
2044 pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_);
2045 }
2046
2047 if (features & NETIF_F_HW_VLAN_CTAG_RX)
2048 pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_;
2049 else
2050 pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_;
2051
2052 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
2053
2054 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
2055
2056 return 0;
2057}
2058
2059static void lan78xx_deferred_vlan_write(struct work_struct *param)
2060{
2061 struct lan78xx_priv *pdata =
2062 container_of(param, struct lan78xx_priv, set_vlan);
2063 struct lan78xx_net *dev = pdata->dev;
2064
2065 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0,
2066 DP_SEL_VHF_VLAN_LEN, pdata->vlan_table);
2067}
2068
2069static int lan78xx_vlan_rx_add_vid(struct net_device *netdev,
2070 __be16 proto, u16 vid)
2071{
2072 struct lan78xx_net *dev = netdev_priv(netdev);
2073 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2074 u16 vid_bit_index;
2075 u16 vid_dword_index;
2076
2077 vid_dword_index = (vid >> 5) & 0x7F;
2078 vid_bit_index = vid & 0x1F;
2079
2080 pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index);
2081
2082 /* defer register writes to a sleepable context */
2083 schedule_work(&pdata->set_vlan);
2084
2085 return 0;
2086}
2087
2088static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev,
2089 __be16 proto, u16 vid)
2090{
2091 struct lan78xx_net *dev = netdev_priv(netdev);
2092 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2093 u16 vid_bit_index;
2094 u16 vid_dword_index;
2095
2096 vid_dword_index = (vid >> 5) & 0x7F;
2097 vid_bit_index = vid & 0x1F;
2098
2099 pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index);
2100
2101 /* defer register writes to a sleepable context */
2102 schedule_work(&pdata->set_vlan);
2103
2104 return 0;
2105}
2106
2107static void lan78xx_init_ltm(struct lan78xx_net *dev)
2108{
2109 int ret;
2110 u32 buf;
2111 u32 regs[6] = { 0 };
2112
2113 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
2114 if (buf & USB_CFG1_LTM_ENABLE_) {
2115 u8 temp[2];
2116 /* Get values from EEPROM first */
2117 if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) {
2118 if (temp[0] == 24) {
2119 ret = lan78xx_read_raw_eeprom(dev,
2120 temp[1] * 2,
2121 24,
2122 (u8 *)regs);
2123 if (ret < 0)
2124 return;
2125 }
2126 } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) {
2127 if (temp[0] == 24) {
2128 ret = lan78xx_read_raw_otp(dev,
2129 temp[1] * 2,
2130 24,
2131 (u8 *)regs);
2132 if (ret < 0)
2133 return;
2134 }
2135 }
2136 }
2137
2138 lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]);
2139 lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]);
2140 lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]);
2141 lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]);
2142 lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]);
2143 lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]);
2144}
2145
2146static int lan78xx_reset(struct lan78xx_net *dev)
2147{
2148 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2149 u32 buf;
2150 int ret = 0;
2151 unsigned long timeout;
2152
2153 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2154 buf |= HW_CFG_LRST_;
2155 ret = lan78xx_write_reg(dev, HW_CFG, buf);
2156
2157 timeout = jiffies + HZ;
2158 do {
2159 mdelay(1);
2160 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2161 if (time_after(jiffies, timeout)) {
2162 netdev_warn(dev->net,
2163 "timeout on completion of LiteReset");
2164 return -EIO;
2165 }
2166 } while (buf & HW_CFG_LRST_);
2167
2168 lan78xx_init_mac_address(dev);
2169
2170 /* save DEVID for later usage */
2171 ret = lan78xx_read_reg(dev, ID_REV, &buf);
2172 dev->chipid = (buf & ID_REV_CHIP_ID_MASK_) >> 16;
2173 dev->chiprev = buf & ID_REV_CHIP_REV_MASK_;
2174
2175 /* Respond to the IN token with a NAK */
2176 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
2177 buf |= USB_CFG_BIR_;
2178 ret = lan78xx_write_reg(dev, USB_CFG0, buf);
2179
2180 /* Init LTM */
2181 lan78xx_init_ltm(dev);
2182
2183 dev->net->hard_header_len += TX_OVERHEAD;
2184 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
2185
2186 if (dev->udev->speed == USB_SPEED_SUPER) {
2187 buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE;
2188 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2189 dev->rx_qlen = 4;
2190 dev->tx_qlen = 4;
2191 } else if (dev->udev->speed == USB_SPEED_HIGH) {
2192 buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
2193 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2194 dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size;
2195 dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu;
2196 } else {
2197 buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
2198 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2199 dev->rx_qlen = 4;
2200 }
2201
2202 ret = lan78xx_write_reg(dev, BURST_CAP, buf);
2203 ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
2204
2205 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2206 buf |= HW_CFG_MEF_;
2207 ret = lan78xx_write_reg(dev, HW_CFG, buf);
2208
2209 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
2210 buf |= USB_CFG_BCE_;
2211 ret = lan78xx_write_reg(dev, USB_CFG0, buf);
2212
2213 /* set FIFO sizes */
2214 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
2215 ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf);
2216
2217 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
2218 ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf);
2219
2220 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
2221 ret = lan78xx_write_reg(dev, FLOW, 0);
2222 ret = lan78xx_write_reg(dev, FCT_FLOW, 0);
2223
2224 /* Don't need rfe_ctl_lock during initialisation */
2225 ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
2226 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_;
2227 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
2228
2229 /* Enable or disable checksum offload engines */
2230 lan78xx_set_features(dev->net, dev->net->features);
2231
2232 lan78xx_set_multicast(dev->net);
2233
2234 /* reset PHY */
2235 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
2236 buf |= PMT_CTL_PHY_RST_;
2237 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
2238
2239 timeout = jiffies + HZ;
2240 do {
2241 mdelay(1);
2242 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
2243 if (time_after(jiffies, timeout)) {
2244 netdev_warn(dev->net, "timeout waiting for PHY Reset");
2245 return -EIO;
2246 }
2247 } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_));
2248
2249 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
2250 buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
2251 ret = lan78xx_write_reg(dev, MAC_CR, buf);
2252
2253 /* enable PHY interrupts */
2254 ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf);
2255 buf |= INT_ENP_PHY_INT;
2256 ret = lan78xx_write_reg(dev, INT_EP_CTL, buf);
2257
2258 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
2259 buf |= MAC_TX_TXEN_;
2260 ret = lan78xx_write_reg(dev, MAC_TX, buf);
2261
2262 ret = lan78xx_read_reg(dev, FCT_TX_CTL, &buf);
2263 buf |= FCT_TX_CTL_EN_;
2264 ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf);
2265
2266 ret = lan78xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
2267
2268 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
2269 buf |= MAC_RX_RXEN_;
2270 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2271
2272 ret = lan78xx_read_reg(dev, FCT_RX_CTL, &buf);
2273 buf |= FCT_RX_CTL_EN_;
2274 ret = lan78xx_write_reg(dev, FCT_RX_CTL, buf);
2275
2276 return 0;
2277}
2278
2279static void lan78xx_init_stats(struct lan78xx_net *dev)
2280{
2281 u32 *p;
2282 int i;
2283
2284 /* initialize for stats update
2285 * some counters are 20bits and some are 32bits
2286 */
2287 p = (u32 *)&dev->stats.rollover_max;
2288 for (i = 0; i < (sizeof(dev->stats.rollover_max) / (sizeof(u32))); i++)
2289 p[i] = 0xFFFFF;
2290
2291 dev->stats.rollover_max.rx_unicast_byte_count = 0xFFFFFFFF;
2292 dev->stats.rollover_max.rx_broadcast_byte_count = 0xFFFFFFFF;
2293 dev->stats.rollover_max.rx_multicast_byte_count = 0xFFFFFFFF;
2294 dev->stats.rollover_max.eee_rx_lpi_transitions = 0xFFFFFFFF;
2295 dev->stats.rollover_max.eee_rx_lpi_time = 0xFFFFFFFF;
2296 dev->stats.rollover_max.tx_unicast_byte_count = 0xFFFFFFFF;
2297 dev->stats.rollover_max.tx_broadcast_byte_count = 0xFFFFFFFF;
2298 dev->stats.rollover_max.tx_multicast_byte_count = 0xFFFFFFFF;
2299 dev->stats.rollover_max.eee_tx_lpi_transitions = 0xFFFFFFFF;
2300 dev->stats.rollover_max.eee_tx_lpi_time = 0xFFFFFFFF;
2301
2302 lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE);
2303}
2304
2305static int lan78xx_open(struct net_device *net)
2306{
2307 struct lan78xx_net *dev = netdev_priv(net);
2308 int ret;
2309
2310 ret = usb_autopm_get_interface(dev->intf);
2311 if (ret < 0)
2312 goto out;
2313
2314 ret = lan78xx_reset(dev);
2315 if (ret < 0)
2316 goto done;
2317
2318 ret = lan78xx_phy_init(dev);
2319 if (ret < 0)
2320 goto done;
2321
2322 /* for Link Check */
2323 if (dev->urb_intr) {
2324 ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);
2325 if (ret < 0) {
2326 netif_err(dev, ifup, dev->net,
2327 "intr submit %d\n", ret);
2328 goto done;
2329 }
2330 }
2331
2332 lan78xx_init_stats(dev);
2333
2334 set_bit(EVENT_DEV_OPEN, &dev->flags);
2335
2336 netif_start_queue(net);
2337
2338 dev->link_on = false;
2339
2340 lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
2341done:
2342 usb_autopm_put_interface(dev->intf);
2343
2344out:
2345 return ret;
2346}
2347
2348static void lan78xx_terminate_urbs(struct lan78xx_net *dev)
2349{
2350 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup);
2351 DECLARE_WAITQUEUE(wait, current);
2352 int temp;
2353
2354 /* ensure there are no more active urbs */
2355 add_wait_queue(&unlink_wakeup, &wait);
2356 set_current_state(TASK_UNINTERRUPTIBLE);
2357 dev->wait = &unlink_wakeup;
2358 temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq);
2359
2360 /* maybe wait for deletions to finish. */
2361 while (!skb_queue_empty(&dev->rxq) &&
2362 !skb_queue_empty(&dev->txq) &&
2363 !skb_queue_empty(&dev->done)) {
2364 schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS));
2365 set_current_state(TASK_UNINTERRUPTIBLE);
2366 netif_dbg(dev, ifdown, dev->net,
2367 "waited for %d urb completions\n", temp);
2368 }
2369 set_current_state(TASK_RUNNING);
2370 dev->wait = NULL;
2371 remove_wait_queue(&unlink_wakeup, &wait);
2372}
2373
2374int lan78xx_stop(struct net_device *net)
2375{
2376 struct lan78xx_net *dev = netdev_priv(net);
2377
2378 if (timer_pending(&dev->stat_monitor))
2379 del_timer_sync(&dev->stat_monitor);
2380
2381 phy_stop(net->phydev);
2382 phy_disconnect(net->phydev);
2383 net->phydev = NULL;
2384
2385 clear_bit(EVENT_DEV_OPEN, &dev->flags);
2386 netif_stop_queue(net);
2387
2388 netif_info(dev, ifdown, dev->net,
2389 "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n",
2390 net->stats.rx_packets, net->stats.tx_packets,
2391 net->stats.rx_errors, net->stats.tx_errors);
2392
2393 lan78xx_terminate_urbs(dev);
2394
2395 usb_kill_urb(dev->urb_intr);
2396
2397 skb_queue_purge(&dev->rxq_pause);
2398
2399 /* deferred work (task, timer, softirq) must also stop.
2400 * can't flush_scheduled_work() until we drop rtnl (later),
2401 * else workers could deadlock; so make workers a NOP.
2402 */
2403 dev->flags = 0;
2404 cancel_delayed_work_sync(&dev->wq);
2405 tasklet_kill(&dev->bh);
2406
2407 usb_autopm_put_interface(dev->intf);
2408
2409 return 0;
2410}
2411
2412static int lan78xx_linearize(struct sk_buff *skb)
2413{
2414 return skb_linearize(skb);
2415}
2416
2417static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
2418 struct sk_buff *skb, gfp_t flags)
2419{
2420 u32 tx_cmd_a, tx_cmd_b;
2421
2422 if (skb_headroom(skb) < TX_OVERHEAD) {
2423 struct sk_buff *skb2;
2424
2425 skb2 = skb_copy_expand(skb, TX_OVERHEAD, 0, flags);
2426 dev_kfree_skb_any(skb);
2427 skb = skb2;
2428 if (!skb)
2429 return NULL;
2430 }
2431
2432 if (lan78xx_linearize(skb) < 0)
2433 return NULL;
2434
2435 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_;
2436
2437 if (skb->ip_summed == CHECKSUM_PARTIAL)
2438 tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_;
2439
2440 tx_cmd_b = 0;
2441 if (skb_is_gso(skb)) {
2442 u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_);
2443
2444 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_;
2445
2446 tx_cmd_a |= TX_CMD_A_LSO_;
2447 }
2448
2449 if (skb_vlan_tag_present(skb)) {
2450 tx_cmd_a |= TX_CMD_A_IVTG_;
2451 tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_;
2452 }
2453
2454 skb_push(skb, 4);
2455 cpu_to_le32s(&tx_cmd_b);
2456 memcpy(skb->data, &tx_cmd_b, 4);
2457
2458 skb_push(skb, 4);
2459 cpu_to_le32s(&tx_cmd_a);
2460 memcpy(skb->data, &tx_cmd_a, 4);
2461
2462 return skb;
2463}
2464
2465static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb,
2466 struct sk_buff_head *list, enum skb_state state)
2467{
2468 unsigned long flags;
2469 enum skb_state old_state;
2470 struct skb_data *entry = (struct skb_data *)skb->cb;
2471
2472 spin_lock_irqsave(&list->lock, flags);
2473 old_state = entry->state;
2474 entry->state = state;
2475
2476 __skb_unlink(skb, list);
2477 spin_unlock(&list->lock);
2478 spin_lock(&dev->done.lock);
2479
2480 __skb_queue_tail(&dev->done, skb);
2481 if (skb_queue_len(&dev->done) == 1)
2482 tasklet_schedule(&dev->bh);
2483 spin_unlock_irqrestore(&dev->done.lock, flags);
2484
2485 return old_state;
2486}
2487
2488static void tx_complete(struct urb *urb)
2489{
2490 struct sk_buff *skb = (struct sk_buff *)urb->context;
2491 struct skb_data *entry = (struct skb_data *)skb->cb;
2492 struct lan78xx_net *dev = entry->dev;
2493
2494 if (urb->status == 0) {
2495 dev->net->stats.tx_packets += entry->num_of_packet;
2496 dev->net->stats.tx_bytes += entry->length;
2497 } else {
2498 dev->net->stats.tx_errors++;
2499
2500 switch (urb->status) {
2501 case -EPIPE:
2502 lan78xx_defer_kevent(dev, EVENT_TX_HALT);
2503 break;
2504
2505 /* software-driven interface shutdown */
2506 case -ECONNRESET:
2507 case -ESHUTDOWN:
2508 break;
2509
2510 case -EPROTO:
2511 case -ETIME:
2512 case -EILSEQ:
2513 netif_stop_queue(dev->net);
2514 break;
2515 default:
2516 netif_dbg(dev, tx_err, dev->net,
2517 "tx err %d\n", entry->urb->status);
2518 break;
2519 }
2520 }
2521
2522 usb_autopm_put_interface_async(dev->intf);
2523
2524 defer_bh(dev, skb, &dev->txq, tx_done);
2525}
2526
2527static void lan78xx_queue_skb(struct sk_buff_head *list,
2528 struct sk_buff *newsk, enum skb_state state)
2529{
2530 struct skb_data *entry = (struct skb_data *)newsk->cb;
2531
2532 __skb_queue_tail(list, newsk);
2533 entry->state = state;
2534}
2535
2536netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net)
2537{
2538 struct lan78xx_net *dev = netdev_priv(net);
2539 struct sk_buff *skb2 = NULL;
2540
2541 if (skb) {
2542 skb_tx_timestamp(skb);
2543 skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC);
2544 }
2545
2546 if (skb2) {
2547 skb_queue_tail(&dev->txq_pend, skb2);
2548
2549 /* throttle TX patch at slower than SUPER SPEED USB */
2550 if ((dev->udev->speed < USB_SPEED_SUPER) &&
2551 (skb_queue_len(&dev->txq_pend) > 10))
2552 netif_stop_queue(net);
2553 } else {
2554 netif_dbg(dev, tx_err, dev->net,
2555 "lan78xx_tx_prep return NULL\n");
2556 dev->net->stats.tx_errors++;
2557 dev->net->stats.tx_dropped++;
2558 }
2559
2560 tasklet_schedule(&dev->bh);
2561
2562 return NETDEV_TX_OK;
2563}
2564
2565int lan78xx_get_endpoints(struct lan78xx_net *dev, struct usb_interface *intf)
2566{
2567 int tmp;
2568 struct usb_host_interface *alt = NULL;
2569 struct usb_host_endpoint *in = NULL, *out = NULL;
2570 struct usb_host_endpoint *status = NULL;
2571
2572 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
2573 unsigned ep;
2574
2575 in = NULL;
2576 out = NULL;
2577 status = NULL;
2578 alt = intf->altsetting + tmp;
2579
2580 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
2581 struct usb_host_endpoint *e;
2582 int intr = 0;
2583
2584 e = alt->endpoint + ep;
2585 switch (e->desc.bmAttributes) {
2586 case USB_ENDPOINT_XFER_INT:
2587 if (!usb_endpoint_dir_in(&e->desc))
2588 continue;
2589 intr = 1;
2590 /* FALLTHROUGH */
2591 case USB_ENDPOINT_XFER_BULK:
2592 break;
2593 default:
2594 continue;
2595 }
2596 if (usb_endpoint_dir_in(&e->desc)) {
2597 if (!intr && !in)
2598 in = e;
2599 else if (intr && !status)
2600 status = e;
2601 } else {
2602 if (!out)
2603 out = e;
2604 }
2605 }
2606 if (in && out)
2607 break;
2608 }
2609 if (!alt || !in || !out)
2610 return -EINVAL;
2611
2612 dev->pipe_in = usb_rcvbulkpipe(dev->udev,
2613 in->desc.bEndpointAddress &
2614 USB_ENDPOINT_NUMBER_MASK);
2615 dev->pipe_out = usb_sndbulkpipe(dev->udev,
2616 out->desc.bEndpointAddress &
2617 USB_ENDPOINT_NUMBER_MASK);
2618 dev->ep_intr = status;
2619
2620 return 0;
2621}
2622
2623static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf)
2624{
2625 struct lan78xx_priv *pdata = NULL;
2626 int ret;
2627 int i;
2628
2629 ret = lan78xx_get_endpoints(dev, intf);
2630
2631 dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL);
2632
2633 pdata = (struct lan78xx_priv *)(dev->data[0]);
2634 if (!pdata) {
2635 netdev_warn(dev->net, "Unable to allocate lan78xx_priv");
2636 return -ENOMEM;
2637 }
2638
2639 pdata->dev = dev;
2640
2641 spin_lock_init(&pdata->rfe_ctl_lock);
2642 mutex_init(&pdata->dataport_mutex);
2643
2644 INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write);
2645
2646 for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++)
2647 pdata->vlan_table[i] = 0;
2648
2649 INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write);
2650
2651 dev->net->features = 0;
2652
2653 if (DEFAULT_TX_CSUM_ENABLE)
2654 dev->net->features |= NETIF_F_HW_CSUM;
2655
2656 if (DEFAULT_RX_CSUM_ENABLE)
2657 dev->net->features |= NETIF_F_RXCSUM;
2658
2659 if (DEFAULT_TSO_CSUM_ENABLE)
2660 dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG;
2661
2662 dev->net->hw_features = dev->net->features;
2663
2664 /* Init all registers */
2665 ret = lan78xx_reset(dev);
2666
2667 lan78xx_mdio_init(dev);
2668
2669 dev->net->flags |= IFF_MULTICAST;
2670
2671 pdata->wol = WAKE_MAGIC;
2672
2673 return 0;
2674}
2675
2676static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf)
2677{
2678 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2679
2680 lan78xx_remove_mdio(dev);
2681
2682 if (pdata) {
2683 netif_dbg(dev, ifdown, dev->net, "free pdata");
2684 kfree(pdata);
2685 pdata = NULL;
2686 dev->data[0] = 0;
2687 }
2688}
2689
2690static void lan78xx_rx_csum_offload(struct lan78xx_net *dev,
2691 struct sk_buff *skb,
2692 u32 rx_cmd_a, u32 rx_cmd_b)
2693{
2694 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2695 unlikely(rx_cmd_a & RX_CMD_A_ICSM_)) {
2696 skb->ip_summed = CHECKSUM_NONE;
2697 } else {
2698 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_));
2699 skb->ip_summed = CHECKSUM_COMPLETE;
2700 }
2701}
2702
2703void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb)
2704{
2705 int status;
2706
2707 if (test_bit(EVENT_RX_PAUSED, &dev->flags)) {
2708 skb_queue_tail(&dev->rxq_pause, skb);
2709 return;
2710 }
2711
2712 dev->net->stats.rx_packets++;
2713 dev->net->stats.rx_bytes += skb->len;
2714
2715 skb->protocol = eth_type_trans(skb, dev->net);
2716
2717 netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n",
2718 skb->len + sizeof(struct ethhdr), skb->protocol);
2719 memset(skb->cb, 0, sizeof(struct skb_data));
2720
2721 if (skb_defer_rx_timestamp(skb))
2722 return;
2723
2724 status = netif_rx(skb);
2725 if (status != NET_RX_SUCCESS)
2726 netif_dbg(dev, rx_err, dev->net,
2727 "netif_rx status %d\n", status);
2728}
2729
2730static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb)
2731{
2732 if (skb->len < dev->net->hard_header_len)
2733 return 0;
2734
2735 while (skb->len > 0) {
2736 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2737 u16 rx_cmd_c;
2738 struct sk_buff *skb2;
2739 unsigned char *packet;
2740
2741 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2742 le32_to_cpus(&rx_cmd_a);
2743 skb_pull(skb, sizeof(rx_cmd_a));
2744
2745 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2746 le32_to_cpus(&rx_cmd_b);
2747 skb_pull(skb, sizeof(rx_cmd_b));
2748
2749 memcpy(&rx_cmd_c, skb->data, sizeof(rx_cmd_c));
2750 le16_to_cpus(&rx_cmd_c);
2751 skb_pull(skb, sizeof(rx_cmd_c));
2752
2753 packet = skb->data;
2754
2755 /* get the packet length */
2756 size = (rx_cmd_a & RX_CMD_A_LEN_MASK_);
2757 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2758
2759 if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) {
2760 netif_dbg(dev, rx_err, dev->net,
2761 "Error rx_cmd_a=0x%08x", rx_cmd_a);
2762 } else {
2763 /* last frame in this batch */
2764 if (skb->len == size) {
2765 lan78xx_rx_csum_offload(dev, skb,
2766 rx_cmd_a, rx_cmd_b);
2767
2768 skb_trim(skb, skb->len - 4); /* remove fcs */
2769 skb->truesize = size + sizeof(struct sk_buff);
2770
2771 return 1;
2772 }
2773
2774 skb2 = skb_clone(skb, GFP_ATOMIC);
2775 if (unlikely(!skb2)) {
2776 netdev_warn(dev->net, "Error allocating skb");
2777 return 0;
2778 }
2779
2780 skb2->len = size;
2781 skb2->data = packet;
2782 skb_set_tail_pointer(skb2, size);
2783
2784 lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b);
2785
2786 skb_trim(skb2, skb2->len - 4); /* remove fcs */
2787 skb2->truesize = size + sizeof(struct sk_buff);
2788
2789 lan78xx_skb_return(dev, skb2);
2790 }
2791
2792 skb_pull(skb, size);
2793
2794 /* padding bytes before the next frame starts */
2795 if (skb->len)
2796 skb_pull(skb, align_count);
2797 }
2798
2799 return 1;
2800}
2801
2802static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb)
2803{
2804 if (!lan78xx_rx(dev, skb)) {
2805 dev->net->stats.rx_errors++;
2806 goto done;
2807 }
2808
2809 if (skb->len) {
2810 lan78xx_skb_return(dev, skb);
2811 return;
2812 }
2813
2814 netif_dbg(dev, rx_err, dev->net, "drop\n");
2815 dev->net->stats.rx_errors++;
2816done:
2817 skb_queue_tail(&dev->done, skb);
2818}
2819
2820static void rx_complete(struct urb *urb);
2821
2822static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags)
2823{
2824 struct sk_buff *skb;
2825 struct skb_data *entry;
2826 unsigned long lockflags;
2827 size_t size = dev->rx_urb_size;
2828 int ret = 0;
2829
2830 skb = netdev_alloc_skb_ip_align(dev->net, size);
2831 if (!skb) {
2832 usb_free_urb(urb);
2833 return -ENOMEM;
2834 }
2835
2836 entry = (struct skb_data *)skb->cb;
2837 entry->urb = urb;
2838 entry->dev = dev;
2839 entry->length = 0;
2840
2841 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in,
2842 skb->data, size, rx_complete, skb);
2843
2844 spin_lock_irqsave(&dev->rxq.lock, lockflags);
2845
2846 if (netif_device_present(dev->net) &&
2847 netif_running(dev->net) &&
2848 !test_bit(EVENT_RX_HALT, &dev->flags) &&
2849 !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
2850 ret = usb_submit_urb(urb, GFP_ATOMIC);
2851 switch (ret) {
2852 case 0:
2853 lan78xx_queue_skb(&dev->rxq, skb, rx_start);
2854 break;
2855 case -EPIPE:
2856 lan78xx_defer_kevent(dev, EVENT_RX_HALT);
2857 break;
2858 case -ENODEV:
2859 netif_dbg(dev, ifdown, dev->net, "device gone\n");
2860 netif_device_detach(dev->net);
2861 break;
2862 case -EHOSTUNREACH:
2863 ret = -ENOLINK;
2864 break;
2865 default:
2866 netif_dbg(dev, rx_err, dev->net,
2867 "rx submit, %d\n", ret);
2868 tasklet_schedule(&dev->bh);
2869 }
2870 } else {
2871 netif_dbg(dev, ifdown, dev->net, "rx: stopped\n");
2872 ret = -ENOLINK;
2873 }
2874 spin_unlock_irqrestore(&dev->rxq.lock, lockflags);
2875 if (ret) {
2876 dev_kfree_skb_any(skb);
2877 usb_free_urb(urb);
2878 }
2879 return ret;
2880}
2881
2882static void rx_complete(struct urb *urb)
2883{
2884 struct sk_buff *skb = (struct sk_buff *)urb->context;
2885 struct skb_data *entry = (struct skb_data *)skb->cb;
2886 struct lan78xx_net *dev = entry->dev;
2887 int urb_status = urb->status;
2888 enum skb_state state;
2889
2890 skb_put(skb, urb->actual_length);
2891 state = rx_done;
2892 entry->urb = NULL;
2893
2894 switch (urb_status) {
2895 case 0:
2896 if (skb->len < dev->net->hard_header_len) {
2897 state = rx_cleanup;
2898 dev->net->stats.rx_errors++;
2899 dev->net->stats.rx_length_errors++;
2900 netif_dbg(dev, rx_err, dev->net,
2901 "rx length %d\n", skb->len);
2902 }
2903 usb_mark_last_busy(dev->udev);
2904 break;
2905 case -EPIPE:
2906 dev->net->stats.rx_errors++;
2907 lan78xx_defer_kevent(dev, EVENT_RX_HALT);
2908 /* FALLTHROUGH */
2909 case -ECONNRESET: /* async unlink */
2910 case -ESHUTDOWN: /* hardware gone */
2911 netif_dbg(dev, ifdown, dev->net,
2912 "rx shutdown, code %d\n", urb_status);
2913 state = rx_cleanup;
2914 entry->urb = urb;
2915 urb = NULL;
2916 break;
2917 case -EPROTO:
2918 case -ETIME:
2919 case -EILSEQ:
2920 dev->net->stats.rx_errors++;
2921 state = rx_cleanup;
2922 entry->urb = urb;
2923 urb = NULL;
2924 break;
2925
2926 /* data overrun ... flush fifo? */
2927 case -EOVERFLOW:
2928 dev->net->stats.rx_over_errors++;
2929 /* FALLTHROUGH */
2930
2931 default:
2932 state = rx_cleanup;
2933 dev->net->stats.rx_errors++;
2934 netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status);
2935 break;
2936 }
2937
2938 state = defer_bh(dev, skb, &dev->rxq, state);
2939
2940 if (urb) {
2941 if (netif_running(dev->net) &&
2942 !test_bit(EVENT_RX_HALT, &dev->flags) &&
2943 state != unlink_start) {
2944 rx_submit(dev, urb, GFP_ATOMIC);
2945 return;
2946 }
2947 usb_free_urb(urb);
2948 }
2949 netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n");
2950}
2951
2952static void lan78xx_tx_bh(struct lan78xx_net *dev)
2953{
2954 int length;
2955 struct urb *urb = NULL;
2956 struct skb_data *entry;
2957 unsigned long flags;
2958 struct sk_buff_head *tqp = &dev->txq_pend;
2959 struct sk_buff *skb, *skb2;
2960 int ret;
2961 int count, pos;
2962 int skb_totallen, pkt_cnt;
2963
2964 skb_totallen = 0;
2965 pkt_cnt = 0;
2966 count = 0;
2967 length = 0;
2968 for (skb = tqp->next; pkt_cnt < tqp->qlen; skb = skb->next) {
2969 if (skb_is_gso(skb)) {
2970 if (pkt_cnt) {
2971 /* handle previous packets first */
2972 break;
2973 }
2974 count = 1;
2975 length = skb->len - TX_OVERHEAD;
2976 skb2 = skb_dequeue(tqp);
2977 goto gso_skb;
2978 }
2979
2980 if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE)
2981 break;
2982 skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32));
2983 pkt_cnt++;
2984 }
2985
2986 /* copy to a single skb */
2987 skb = alloc_skb(skb_totallen, GFP_ATOMIC);
2988 if (!skb)
2989 goto drop;
2990
2991 skb_put(skb, skb_totallen);
2992
2993 for (count = pos = 0; count < pkt_cnt; count++) {
2994 skb2 = skb_dequeue(tqp);
2995 if (skb2) {
2996 length += (skb2->len - TX_OVERHEAD);
2997 memcpy(skb->data + pos, skb2->data, skb2->len);
2998 pos += roundup(skb2->len, sizeof(u32));
2999 dev_kfree_skb(skb2);
3000 }
3001 }
3002
3003gso_skb:
3004 urb = usb_alloc_urb(0, GFP_ATOMIC);
3005 if (!urb) {
3006 netif_dbg(dev, tx_err, dev->net, "no urb\n");
3007 goto drop;
3008 }
3009
3010 entry = (struct skb_data *)skb->cb;
3011 entry->urb = urb;
3012 entry->dev = dev;
3013 entry->length = length;
3014 entry->num_of_packet = count;
3015
3016 spin_lock_irqsave(&dev->txq.lock, flags);
3017 ret = usb_autopm_get_interface_async(dev->intf);
3018 if (ret < 0) {
3019 spin_unlock_irqrestore(&dev->txq.lock, flags);
3020 goto drop;
3021 }
3022
3023 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out,
3024 skb->data, skb->len, tx_complete, skb);
3025
3026 if (length % dev->maxpacket == 0) {
3027 /* send USB_ZERO_PACKET */
3028 urb->transfer_flags |= URB_ZERO_PACKET;
3029 }
3030
3031#ifdef CONFIG_PM
3032 /* if this triggers the device is still a sleep */
3033 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3034 /* transmission will be done in resume */
3035 usb_anchor_urb(urb, &dev->deferred);
3036 /* no use to process more packets */
3037 netif_stop_queue(dev->net);
3038 usb_put_urb(urb);
3039 spin_unlock_irqrestore(&dev->txq.lock, flags);
3040 netdev_dbg(dev->net, "Delaying transmission for resumption\n");
3041 return;
3042 }
3043#endif
3044
3045 ret = usb_submit_urb(urb, GFP_ATOMIC);
3046 switch (ret) {
3047 case 0:
3048 dev->net->trans_start = jiffies;
3049 lan78xx_queue_skb(&dev->txq, skb, tx_start);
3050 if (skb_queue_len(&dev->txq) >= dev->tx_qlen)
3051 netif_stop_queue(dev->net);
3052 break;
3053 case -EPIPE:
3054 netif_stop_queue(dev->net);
3055 lan78xx_defer_kevent(dev, EVENT_TX_HALT);
3056 usb_autopm_put_interface_async(dev->intf);
3057 break;
3058 default:
3059 usb_autopm_put_interface_async(dev->intf);
3060 netif_dbg(dev, tx_err, dev->net,
3061 "tx: submit urb err %d\n", ret);
3062 break;
3063 }
3064
3065 spin_unlock_irqrestore(&dev->txq.lock, flags);
3066
3067 if (ret) {
3068 netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret);
3069drop:
3070 dev->net->stats.tx_dropped++;
3071 if (skb)
3072 dev_kfree_skb_any(skb);
3073 usb_free_urb(urb);
3074 } else
3075 netif_dbg(dev, tx_queued, dev->net,
3076 "> tx, len %d, type 0x%x\n", length, skb->protocol);
3077}
3078
3079static void lan78xx_rx_bh(struct lan78xx_net *dev)
3080{
3081 struct urb *urb;
3082 int i;
3083
3084 if (skb_queue_len(&dev->rxq) < dev->rx_qlen) {
3085 for (i = 0; i < 10; i++) {
3086 if (skb_queue_len(&dev->rxq) >= dev->rx_qlen)
3087 break;
3088 urb = usb_alloc_urb(0, GFP_ATOMIC);
3089 if (urb)
3090 if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK)
3091 return;
3092 }
3093
3094 if (skb_queue_len(&dev->rxq) < dev->rx_qlen)
3095 tasklet_schedule(&dev->bh);
3096 }
3097 if (skb_queue_len(&dev->txq) < dev->tx_qlen)
3098 netif_wake_queue(dev->net);
3099}
3100
3101static void lan78xx_bh(unsigned long param)
3102{
3103 struct lan78xx_net *dev = (struct lan78xx_net *)param;
3104 struct sk_buff *skb;
3105 struct skb_data *entry;
3106
3107 while ((skb = skb_dequeue(&dev->done))) {
3108 entry = (struct skb_data *)(skb->cb);
3109 switch (entry->state) {
3110 case rx_done:
3111 entry->state = rx_cleanup;
3112 rx_process(dev, skb);
3113 continue;
3114 case tx_done:
3115 usb_free_urb(entry->urb);
3116 dev_kfree_skb(skb);
3117 continue;
3118 case rx_cleanup:
3119 usb_free_urb(entry->urb);
3120 dev_kfree_skb(skb);
3121 continue;
3122 default:
3123 netdev_dbg(dev->net, "skb state %d\n", entry->state);
3124 return;
3125 }
3126 }
3127
3128 if (netif_device_present(dev->net) && netif_running(dev->net)) {
3129 /* reset update timer delta */
3130 if (timer_pending(&dev->stat_monitor) && (dev->delta != 1)) {
3131 dev->delta = 1;
3132 mod_timer(&dev->stat_monitor,
3133 jiffies + STAT_UPDATE_TIMER);
3134 }
3135
3136 if (!skb_queue_empty(&dev->txq_pend))
3137 lan78xx_tx_bh(dev);
3138
3139 if (!timer_pending(&dev->delay) &&
3140 !test_bit(EVENT_RX_HALT, &dev->flags))
3141 lan78xx_rx_bh(dev);
3142 }
3143}
3144
3145static void lan78xx_delayedwork(struct work_struct *work)
3146{
3147 int status;
3148 struct lan78xx_net *dev;
3149
3150 dev = container_of(work, struct lan78xx_net, wq.work);
3151
3152 if (test_bit(EVENT_TX_HALT, &dev->flags)) {
3153 unlink_urbs(dev, &dev->txq);
3154 status = usb_autopm_get_interface(dev->intf);
3155 if (status < 0)
3156 goto fail_pipe;
3157 status = usb_clear_halt(dev->udev, dev->pipe_out);
3158 usb_autopm_put_interface(dev->intf);
3159 if (status < 0 &&
3160 status != -EPIPE &&
3161 status != -ESHUTDOWN) {
3162 if (netif_msg_tx_err(dev))
3163fail_pipe:
3164 netdev_err(dev->net,
3165 "can't clear tx halt, status %d\n",
3166 status);
3167 } else {
3168 clear_bit(EVENT_TX_HALT, &dev->flags);
3169 if (status != -ESHUTDOWN)
3170 netif_wake_queue(dev->net);
3171 }
3172 }
3173 if (test_bit(EVENT_RX_HALT, &dev->flags)) {
3174 unlink_urbs(dev, &dev->rxq);
3175 status = usb_autopm_get_interface(dev->intf);
3176 if (status < 0)
3177 goto fail_halt;
3178 status = usb_clear_halt(dev->udev, dev->pipe_in);
3179 usb_autopm_put_interface(dev->intf);
3180 if (status < 0 &&
3181 status != -EPIPE &&
3182 status != -ESHUTDOWN) {
3183 if (netif_msg_rx_err(dev))
3184fail_halt:
3185 netdev_err(dev->net,
3186 "can't clear rx halt, status %d\n",
3187 status);
3188 } else {
3189 clear_bit(EVENT_RX_HALT, &dev->flags);
3190 tasklet_schedule(&dev->bh);
3191 }
3192 }
3193
3194 if (test_bit(EVENT_LINK_RESET, &dev->flags)) {
3195 int ret = 0;
3196
3197 clear_bit(EVENT_LINK_RESET, &dev->flags);
3198 status = usb_autopm_get_interface(dev->intf);
3199 if (status < 0)
3200 goto skip_reset;
3201 if (lan78xx_link_reset(dev) < 0) {
3202 usb_autopm_put_interface(dev->intf);
3203skip_reset:
3204 netdev_info(dev->net, "link reset failed (%d)\n",
3205 ret);
3206 } else {
3207 usb_autopm_put_interface(dev->intf);
3208 }
3209 }
3210
3211 if (test_bit(EVENT_STAT_UPDATE, &dev->flags)) {
3212 lan78xx_update_stats(dev);
3213
3214 clear_bit(EVENT_STAT_UPDATE, &dev->flags);
3215
3216 mod_timer(&dev->stat_monitor,
3217 jiffies + (STAT_UPDATE_TIMER * dev->delta));
3218
3219 dev->delta = min((dev->delta * 2), 50);
3220 }
3221}
3222
3223static void intr_complete(struct urb *urb)
3224{
3225 struct lan78xx_net *dev = urb->context;
3226 int status = urb->status;
3227
3228 switch (status) {
3229 /* success */
3230 case 0:
3231 lan78xx_status(dev, urb);
3232 break;
3233
3234 /* software-driven interface shutdown */
3235 case -ENOENT: /* urb killed */
3236 case -ESHUTDOWN: /* hardware gone */
3237 netif_dbg(dev, ifdown, dev->net,
3238 "intr shutdown, code %d\n", status);
3239 return;
3240
3241 /* NOTE: not throttling like RX/TX, since this endpoint
3242 * already polls infrequently
3243 */
3244 default:
3245 netdev_dbg(dev->net, "intr status %d\n", status);
3246 break;
3247 }
3248
3249 if (!netif_running(dev->net))
3250 return;
3251
3252 memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
3253 status = usb_submit_urb(urb, GFP_ATOMIC);
3254 if (status != 0)
3255 netif_err(dev, timer, dev->net,
3256 "intr resubmit --> %d\n", status);
3257}
3258
3259static void lan78xx_disconnect(struct usb_interface *intf)
3260{
3261 struct lan78xx_net *dev;
3262 struct usb_device *udev;
3263 struct net_device *net;
3264
3265 dev = usb_get_intfdata(intf);
3266 usb_set_intfdata(intf, NULL);
3267 if (!dev)
3268 return;
3269
3270 udev = interface_to_usbdev(intf);
3271
3272 net = dev->net;
3273 unregister_netdev(net);
3274
3275 cancel_delayed_work_sync(&dev->wq);
3276
3277 usb_scuttle_anchored_urbs(&dev->deferred);
3278
3279 lan78xx_unbind(dev, intf);
3280
3281 usb_kill_urb(dev->urb_intr);
3282 usb_free_urb(dev->urb_intr);
3283
3284 free_netdev(net);
3285 usb_put_dev(udev);
3286}
3287
3288void lan78xx_tx_timeout(struct net_device *net)
3289{
3290 struct lan78xx_net *dev = netdev_priv(net);
3291
3292 unlink_urbs(dev, &dev->txq);
3293 tasklet_schedule(&dev->bh);
3294}
3295
3296static const struct net_device_ops lan78xx_netdev_ops = {
3297 .ndo_open = lan78xx_open,
3298 .ndo_stop = lan78xx_stop,
3299 .ndo_start_xmit = lan78xx_start_xmit,
3300 .ndo_tx_timeout = lan78xx_tx_timeout,
3301 .ndo_change_mtu = lan78xx_change_mtu,
3302 .ndo_set_mac_address = lan78xx_set_mac_addr,
3303 .ndo_validate_addr = eth_validate_addr,
3304 .ndo_do_ioctl = lan78xx_ioctl,
3305 .ndo_set_rx_mode = lan78xx_set_multicast,
3306 .ndo_set_features = lan78xx_set_features,
3307 .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid,
3308 .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid,
3309};
3310
3311static void lan78xx_stat_monitor(unsigned long param)
3312{
3313 struct lan78xx_net *dev;
3314
3315 dev = (struct lan78xx_net *)param;
3316
3317 lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE);
3318}
3319
3320static int lan78xx_probe(struct usb_interface *intf,
3321 const struct usb_device_id *id)
3322{
3323 struct lan78xx_net *dev;
3324 struct net_device *netdev;
3325 struct usb_device *udev;
3326 int ret;
3327 unsigned maxp;
3328 unsigned period;
3329 u8 *buf = NULL;
3330
3331 udev = interface_to_usbdev(intf);
3332 udev = usb_get_dev(udev);
3333
3334 ret = -ENOMEM;
3335 netdev = alloc_etherdev(sizeof(struct lan78xx_net));
3336 if (!netdev) {
3337 dev_err(&intf->dev, "Error: OOM\n");
3338 goto out1;
3339 }
3340
3341 /* netdev_printk() needs this */
3342 SET_NETDEV_DEV(netdev, &intf->dev);
3343
3344 dev = netdev_priv(netdev);
3345 dev->udev = udev;
3346 dev->intf = intf;
3347 dev->net = netdev;
3348 dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
3349 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
3350
3351 skb_queue_head_init(&dev->rxq);
3352 skb_queue_head_init(&dev->txq);
3353 skb_queue_head_init(&dev->done);
3354 skb_queue_head_init(&dev->rxq_pause);
3355 skb_queue_head_init(&dev->txq_pend);
3356 mutex_init(&dev->phy_mutex);
3357
3358 tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev);
3359 INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork);
3360 init_usb_anchor(&dev->deferred);
3361
3362 netdev->netdev_ops = &lan78xx_netdev_ops;
3363 netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES;
3364 netdev->ethtool_ops = &lan78xx_ethtool_ops;
3365
3366 dev->stat_monitor.function = lan78xx_stat_monitor;
3367 dev->stat_monitor.data = (unsigned long)dev;
3368 dev->delta = 1;
3369 init_timer(&dev->stat_monitor);
3370
3371 mutex_init(&dev->stats.access_lock);
3372
3373 ret = lan78xx_bind(dev, intf);
3374 if (ret < 0)
3375 goto out2;
3376 strcpy(netdev->name, "eth%d");
3377
3378 if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len))
3379 netdev->mtu = dev->hard_mtu - netdev->hard_header_len;
3380
3381 dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0;
3382 dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1;
3383 dev->ep_intr = (intf->cur_altsetting)->endpoint + 2;
3384
3385 dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE);
3386 dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE);
3387
3388 dev->pipe_intr = usb_rcvintpipe(dev->udev,
3389 dev->ep_intr->desc.bEndpointAddress &
3390 USB_ENDPOINT_NUMBER_MASK);
3391 period = dev->ep_intr->desc.bInterval;
3392
3393 maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
3394 buf = kmalloc(maxp, GFP_KERNEL);
3395 if (buf) {
3396 dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL);
3397 if (!dev->urb_intr) {
3398 kfree(buf);
3399 goto out3;
3400 } else {
3401 usb_fill_int_urb(dev->urb_intr, dev->udev,
3402 dev->pipe_intr, buf, maxp,
3403 intr_complete, dev, period);
3404 }
3405 }
3406
3407 dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1);
3408
3409 /* driver requires remote-wakeup capability during autosuspend. */
3410 intf->needs_remote_wakeup = 1;
3411
3412 ret = register_netdev(netdev);
3413 if (ret != 0) {
3414 netif_err(dev, probe, netdev, "couldn't register the device\n");
3415 goto out2;
3416 }
3417
3418 usb_set_intfdata(intf, dev);
3419
3420 ret = device_set_wakeup_enable(&udev->dev, true);
3421
3422 /* Default delay of 2sec has more overhead than advantage.
3423 * Set to 10sec as default.
3424 */
3425 pm_runtime_set_autosuspend_delay(&udev->dev,
3426 DEFAULT_AUTOSUSPEND_DELAY);
3427
3428 return 0;
3429
3430out3:
3431 lan78xx_unbind(dev, intf);
3432out2:
3433 free_netdev(netdev);
3434out1:
3435 usb_put_dev(udev);
3436
3437 return ret;
3438}
3439
3440static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len)
3441{
3442 const u16 crc16poly = 0x8005;
3443 int i;
3444 u16 bit, crc, msb;
3445 u8 data;
3446
3447 crc = 0xFFFF;
3448 for (i = 0; i < len; i++) {
3449 data = *buf++;
3450 for (bit = 0; bit < 8; bit++) {
3451 msb = crc >> 15;
3452 crc <<= 1;
3453
3454 if (msb ^ (u16)(data & 1)) {
3455 crc ^= crc16poly;
3456 crc |= (u16)0x0001U;
3457 }
3458 data >>= 1;
3459 }
3460 }
3461
3462 return crc;
3463}
3464
3465static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol)
3466{
3467 u32 buf;
3468 int ret;
3469 int mask_index;
3470 u16 crc;
3471 u32 temp_wucsr;
3472 u32 temp_pmt_ctl;
3473 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
3474 const u8 ipv6_multicast[3] = { 0x33, 0x33 };
3475 const u8 arp_type[2] = { 0x08, 0x06 };
3476
3477 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3478 buf &= ~MAC_TX_TXEN_;
3479 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3480 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3481 buf &= ~MAC_RX_RXEN_;
3482 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3483
3484 ret = lan78xx_write_reg(dev, WUCSR, 0);
3485 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3486 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3487
3488 temp_wucsr = 0;
3489
3490 temp_pmt_ctl = 0;
3491 ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl);
3492 temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_;
3493 temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_;
3494
3495 for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++)
3496 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0);
3497
3498 mask_index = 0;
3499 if (wol & WAKE_PHY) {
3500 temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_;
3501
3502 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3503 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3504 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3505 }
3506 if (wol & WAKE_MAGIC) {
3507 temp_wucsr |= WUCSR_MPEN_;
3508
3509 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3510 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3511 temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_;
3512 }
3513 if (wol & WAKE_BCAST) {
3514 temp_wucsr |= WUCSR_BCST_EN_;
3515
3516 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3517 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3518 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3519 }
3520 if (wol & WAKE_MCAST) {
3521 temp_wucsr |= WUCSR_WAKE_EN_;
3522
3523 /* set WUF_CFG & WUF_MASK for IPv4 Multicast */
3524 crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3);
3525 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3526 WUF_CFGX_EN_ |
3527 WUF_CFGX_TYPE_MCAST_ |
3528 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3529 (crc & WUF_CFGX_CRC16_MASK_));
3530
3531 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7);
3532 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3533 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3534 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3535 mask_index++;
3536
3537 /* for IPv6 Multicast */
3538 crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2);
3539 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3540 WUF_CFGX_EN_ |
3541 WUF_CFGX_TYPE_MCAST_ |
3542 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3543 (crc & WUF_CFGX_CRC16_MASK_));
3544
3545 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3);
3546 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3547 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3548 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3549 mask_index++;
3550
3551 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3552 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3553 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3554 }
3555 if (wol & WAKE_UCAST) {
3556 temp_wucsr |= WUCSR_PFDA_EN_;
3557
3558 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3559 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3560 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3561 }
3562 if (wol & WAKE_ARP) {
3563 temp_wucsr |= WUCSR_WAKE_EN_;
3564
3565 /* set WUF_CFG & WUF_MASK
3566 * for packettype (offset 12,13) = ARP (0x0806)
3567 */
3568 crc = lan78xx_wakeframe_crc16(arp_type, 2);
3569 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3570 WUF_CFGX_EN_ |
3571 WUF_CFGX_TYPE_ALL_ |
3572 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3573 (crc & WUF_CFGX_CRC16_MASK_));
3574
3575 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000);
3576 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3577 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3578 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3579 mask_index++;
3580
3581 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3582 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3583 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3584 }
3585
3586 ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr);
3587
3588 /* when multiple WOL bits are set */
3589 if (hweight_long((unsigned long)wol) > 1) {
3590 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3591 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3592 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3593 }
3594 ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl);
3595
3596 /* clear WUPS */
3597 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3598 buf |= PMT_CTL_WUPS_MASK_;
3599 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3600
3601 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3602 buf |= MAC_RX_RXEN_;
3603 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3604
3605 return 0;
3606}
3607
3608int lan78xx_suspend(struct usb_interface *intf, pm_message_t message)
3609{
3610 struct lan78xx_net *dev = usb_get_intfdata(intf);
3611 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
3612 u32 buf;
3613 int ret;
3614 int event;
3615
3616 event = message.event;
3617
3618 if (!dev->suspend_count++) {
3619 spin_lock_irq(&dev->txq.lock);
3620 /* don't autosuspend while transmitting */
3621 if ((skb_queue_len(&dev->txq) ||
3622 skb_queue_len(&dev->txq_pend)) &&
3623 PMSG_IS_AUTO(message)) {
3624 spin_unlock_irq(&dev->txq.lock);
3625 ret = -EBUSY;
3626 goto out;
3627 } else {
3628 set_bit(EVENT_DEV_ASLEEP, &dev->flags);
3629 spin_unlock_irq(&dev->txq.lock);
3630 }
3631
3632 /* stop TX & RX */
3633 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3634 buf &= ~MAC_TX_TXEN_;
3635 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3636 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3637 buf &= ~MAC_RX_RXEN_;
3638 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3639
3640 /* empty out the rx and queues */
3641 netif_device_detach(dev->net);
3642 lan78xx_terminate_urbs(dev);
3643 usb_kill_urb(dev->urb_intr);
3644
3645 /* reattach */
3646 netif_device_attach(dev->net);
3647 }
3648
3649 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3650 del_timer(&dev->stat_monitor);
3651
3652 if (PMSG_IS_AUTO(message)) {
3653 /* auto suspend (selective suspend) */
3654 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3655 buf &= ~MAC_TX_TXEN_;
3656 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3657 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3658 buf &= ~MAC_RX_RXEN_;
3659 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3660
3661 ret = lan78xx_write_reg(dev, WUCSR, 0);
3662 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3663 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3664
3665 /* set goodframe wakeup */
3666 ret = lan78xx_read_reg(dev, WUCSR, &buf);
3667
3668 buf |= WUCSR_RFE_WAKE_EN_;
3669 buf |= WUCSR_STORE_WAKE_;
3670
3671 ret = lan78xx_write_reg(dev, WUCSR, buf);
3672
3673 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3674
3675 buf &= ~PMT_CTL_RES_CLR_WKP_EN_;
3676 buf |= PMT_CTL_RES_CLR_WKP_STS_;
3677
3678 buf |= PMT_CTL_PHY_WAKE_EN_;
3679 buf |= PMT_CTL_WOL_EN_;
3680 buf &= ~PMT_CTL_SUS_MODE_MASK_;
3681 buf |= PMT_CTL_SUS_MODE_3_;
3682
3683 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3684
3685 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3686
3687 buf |= PMT_CTL_WUPS_MASK_;
3688
3689 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3690
3691 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3692 buf |= MAC_RX_RXEN_;
3693 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3694 } else {
3695 lan78xx_set_suspend(dev, pdata->wol);
3696 }
3697 }
3698
3699 ret = 0;
3700out:
3701 return ret;
3702}
3703
3704int lan78xx_resume(struct usb_interface *intf)
3705{
3706 struct lan78xx_net *dev = usb_get_intfdata(intf);
3707 struct sk_buff *skb;
3708 struct urb *res;
3709 int ret;
3710 u32 buf;
3711
3712 if (!timer_pending(&dev->stat_monitor)) {
3713 dev->delta = 1;
3714 mod_timer(&dev->stat_monitor,
3715 jiffies + STAT_UPDATE_TIMER);
3716 }
3717
3718 if (!--dev->suspend_count) {
3719 /* resume interrupt URBs */
3720 if (dev->urb_intr && test_bit(EVENT_DEV_OPEN, &dev->flags))
3721 usb_submit_urb(dev->urb_intr, GFP_NOIO);
3722
3723 spin_lock_irq(&dev->txq.lock);
3724 while ((res = usb_get_from_anchor(&dev->deferred))) {
3725 skb = (struct sk_buff *)res->context;
3726 ret = usb_submit_urb(res, GFP_ATOMIC);
3727 if (ret < 0) {
3728 dev_kfree_skb_any(skb);
3729 usb_free_urb(res);
3730 usb_autopm_put_interface_async(dev->intf);
3731 } else {
3732 dev->net->trans_start = jiffies;
3733 lan78xx_queue_skb(&dev->txq, skb, tx_start);
3734 }
3735 }
3736
3737 clear_bit(EVENT_DEV_ASLEEP, &dev->flags);
3738 spin_unlock_irq(&dev->txq.lock);
3739
3740 if (test_bit(EVENT_DEV_OPEN, &dev->flags)) {
3741 if (!(skb_queue_len(&dev->txq) >= dev->tx_qlen))
3742 netif_start_queue(dev->net);
3743 tasklet_schedule(&dev->bh);
3744 }
3745 }
3746
3747 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3748 ret = lan78xx_write_reg(dev, WUCSR, 0);
3749 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3750
3751 ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ |
3752 WUCSR2_ARP_RCD_ |
3753 WUCSR2_IPV6_TCPSYN_RCD_ |
3754 WUCSR2_IPV4_TCPSYN_RCD_);
3755
3756 ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ |
3757 WUCSR_EEE_RX_WAKE_ |
3758 WUCSR_PFDA_FR_ |
3759 WUCSR_RFE_WAKE_FR_ |
3760 WUCSR_WUFR_ |
3761 WUCSR_MPR_ |
3762 WUCSR_BCST_FR_);
3763
3764 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3765 buf |= MAC_TX_TXEN_;
3766 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3767
3768 return 0;
3769}
3770
3771int lan78xx_reset_resume(struct usb_interface *intf)
3772{
3773 struct lan78xx_net *dev = usb_get_intfdata(intf);
3774
3775 lan78xx_reset(dev);
3776
3777 lan78xx_phy_init(dev);
3778
3779 return lan78xx_resume(intf);
3780}
3781
3782static const struct usb_device_id products[] = {
3783 {
3784 /* LAN7800 USB Gigabit Ethernet Device */
3785 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID),
3786 },
3787 {
3788 /* LAN7850 USB Gigabit Ethernet Device */
3789 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID),
3790 },
3791 {},
3792};
3793MODULE_DEVICE_TABLE(usb, products);
3794
3795static struct usb_driver lan78xx_driver = {
3796 .name = DRIVER_NAME,
3797 .id_table = products,
3798 .probe = lan78xx_probe,
3799 .disconnect = lan78xx_disconnect,
3800 .suspend = lan78xx_suspend,
3801 .resume = lan78xx_resume,
3802 .reset_resume = lan78xx_reset_resume,
3803 .supports_autosuspend = 1,
3804 .disable_hub_initiated_lpm = 1,
3805};
3806
3807module_usb_driver(lan78xx_driver);
3808
3809MODULE_AUTHOR(DRIVER_AUTHOR);
3810MODULE_DESCRIPTION(DRIVER_DESC);
3811MODULE_LICENSE("GPL");