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 <linux/phy.h>
33#include <net/ip6_checksum.h>
34#include <linux/interrupt.h>
35#include <linux/irqdomain.h>
36#include <linux/irq.h>
37#include <linux/irqchip/chained_irq.h>
38#include <linux/microchipphy.h>
39#include <linux/phy.h>
40#include "lan78xx.h"
41
42#define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>"
43#define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices"
44#define DRIVER_NAME "lan78xx"
45#define DRIVER_VERSION "1.0.6"
46
47#define TX_TIMEOUT_JIFFIES (5 * HZ)
48#define THROTTLE_JIFFIES (HZ / 8)
49#define UNLINK_TIMEOUT_MS 3
50
51#define RX_MAX_QUEUE_MEMORY (60 * 1518)
52
53#define SS_USB_PKT_SIZE (1024)
54#define HS_USB_PKT_SIZE (512)
55#define FS_USB_PKT_SIZE (64)
56
57#define MAX_RX_FIFO_SIZE (12 * 1024)
58#define MAX_TX_FIFO_SIZE (12 * 1024)
59#define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE)
60#define DEFAULT_BULK_IN_DELAY (0x0800)
61#define MAX_SINGLE_PACKET_SIZE (9000)
62#define DEFAULT_TX_CSUM_ENABLE (true)
63#define DEFAULT_RX_CSUM_ENABLE (true)
64#define DEFAULT_TSO_CSUM_ENABLE (true)
65#define DEFAULT_VLAN_FILTER_ENABLE (true)
66#define TX_OVERHEAD (8)
67#define RXW_PADDING 2
68
69#define LAN78XX_USB_VENDOR_ID (0x0424)
70#define LAN7800_USB_PRODUCT_ID (0x7800)
71#define LAN7850_USB_PRODUCT_ID (0x7850)
72#define LAN7801_USB_PRODUCT_ID (0x7801)
73#define LAN78XX_EEPROM_MAGIC (0x78A5)
74#define LAN78XX_OTP_MAGIC (0x78F3)
75
76#define MII_READ 1
77#define MII_WRITE 0
78
79#define EEPROM_INDICATOR (0xA5)
80#define EEPROM_MAC_OFFSET (0x01)
81#define MAX_EEPROM_SIZE 512
82#define OTP_INDICATOR_1 (0xF3)
83#define OTP_INDICATOR_2 (0xF7)
84
85#define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \
86 WAKE_MCAST | WAKE_BCAST | \
87 WAKE_ARP | WAKE_MAGIC)
88
89/* USB related defines */
90#define BULK_IN_PIPE 1
91#define BULK_OUT_PIPE 2
92
93/* default autosuspend delay (mSec)*/
94#define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000)
95
96/* statistic update interval (mSec) */
97#define STAT_UPDATE_TIMER (1 * 1000)
98
99/* defines interrupts from interrupt EP */
100#define MAX_INT_EP (32)
101#define INT_EP_INTEP (31)
102#define INT_EP_OTP_WR_DONE (28)
103#define INT_EP_EEE_TX_LPI_START (26)
104#define INT_EP_EEE_TX_LPI_STOP (25)
105#define INT_EP_EEE_RX_LPI (24)
106#define INT_EP_MAC_RESET_TIMEOUT (23)
107#define INT_EP_RDFO (22)
108#define INT_EP_TXE (21)
109#define INT_EP_USB_STATUS (20)
110#define INT_EP_TX_DIS (19)
111#define INT_EP_RX_DIS (18)
112#define INT_EP_PHY (17)
113#define INT_EP_DP (16)
114#define INT_EP_MAC_ERR (15)
115#define INT_EP_TDFU (14)
116#define INT_EP_TDFO (13)
117#define INT_EP_UTX (12)
118#define INT_EP_GPIO_11 (11)
119#define INT_EP_GPIO_10 (10)
120#define INT_EP_GPIO_9 (9)
121#define INT_EP_GPIO_8 (8)
122#define INT_EP_GPIO_7 (7)
123#define INT_EP_GPIO_6 (6)
124#define INT_EP_GPIO_5 (5)
125#define INT_EP_GPIO_4 (4)
126#define INT_EP_GPIO_3 (3)
127#define INT_EP_GPIO_2 (2)
128#define INT_EP_GPIO_1 (1)
129#define INT_EP_GPIO_0 (0)
130
131static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = {
132 "RX FCS Errors",
133 "RX Alignment Errors",
134 "Rx Fragment Errors",
135 "RX Jabber Errors",
136 "RX Undersize Frame Errors",
137 "RX Oversize Frame Errors",
138 "RX Dropped Frames",
139 "RX Unicast Byte Count",
140 "RX Broadcast Byte Count",
141 "RX Multicast Byte Count",
142 "RX Unicast Frames",
143 "RX Broadcast Frames",
144 "RX Multicast Frames",
145 "RX Pause Frames",
146 "RX 64 Byte Frames",
147 "RX 65 - 127 Byte Frames",
148 "RX 128 - 255 Byte Frames",
149 "RX 256 - 511 Bytes Frames",
150 "RX 512 - 1023 Byte Frames",
151 "RX 1024 - 1518 Byte Frames",
152 "RX Greater 1518 Byte Frames",
153 "EEE RX LPI Transitions",
154 "EEE RX LPI Time",
155 "TX FCS Errors",
156 "TX Excess Deferral Errors",
157 "TX Carrier Errors",
158 "TX Bad Byte Count",
159 "TX Single Collisions",
160 "TX Multiple Collisions",
161 "TX Excessive Collision",
162 "TX Late Collisions",
163 "TX Unicast Byte Count",
164 "TX Broadcast Byte Count",
165 "TX Multicast Byte Count",
166 "TX Unicast Frames",
167 "TX Broadcast Frames",
168 "TX Multicast Frames",
169 "TX Pause Frames",
170 "TX 64 Byte Frames",
171 "TX 65 - 127 Byte Frames",
172 "TX 128 - 255 Byte Frames",
173 "TX 256 - 511 Bytes Frames",
174 "TX 512 - 1023 Byte Frames",
175 "TX 1024 - 1518 Byte Frames",
176 "TX Greater 1518 Byte Frames",
177 "EEE TX LPI Transitions",
178 "EEE TX LPI Time",
179};
180
181struct lan78xx_statstage {
182 u32 rx_fcs_errors;
183 u32 rx_alignment_errors;
184 u32 rx_fragment_errors;
185 u32 rx_jabber_errors;
186 u32 rx_undersize_frame_errors;
187 u32 rx_oversize_frame_errors;
188 u32 rx_dropped_frames;
189 u32 rx_unicast_byte_count;
190 u32 rx_broadcast_byte_count;
191 u32 rx_multicast_byte_count;
192 u32 rx_unicast_frames;
193 u32 rx_broadcast_frames;
194 u32 rx_multicast_frames;
195 u32 rx_pause_frames;
196 u32 rx_64_byte_frames;
197 u32 rx_65_127_byte_frames;
198 u32 rx_128_255_byte_frames;
199 u32 rx_256_511_bytes_frames;
200 u32 rx_512_1023_byte_frames;
201 u32 rx_1024_1518_byte_frames;
202 u32 rx_greater_1518_byte_frames;
203 u32 eee_rx_lpi_transitions;
204 u32 eee_rx_lpi_time;
205 u32 tx_fcs_errors;
206 u32 tx_excess_deferral_errors;
207 u32 tx_carrier_errors;
208 u32 tx_bad_byte_count;
209 u32 tx_single_collisions;
210 u32 tx_multiple_collisions;
211 u32 tx_excessive_collision;
212 u32 tx_late_collisions;
213 u32 tx_unicast_byte_count;
214 u32 tx_broadcast_byte_count;
215 u32 tx_multicast_byte_count;
216 u32 tx_unicast_frames;
217 u32 tx_broadcast_frames;
218 u32 tx_multicast_frames;
219 u32 tx_pause_frames;
220 u32 tx_64_byte_frames;
221 u32 tx_65_127_byte_frames;
222 u32 tx_128_255_byte_frames;
223 u32 tx_256_511_bytes_frames;
224 u32 tx_512_1023_byte_frames;
225 u32 tx_1024_1518_byte_frames;
226 u32 tx_greater_1518_byte_frames;
227 u32 eee_tx_lpi_transitions;
228 u32 eee_tx_lpi_time;
229};
230
231struct lan78xx_statstage64 {
232 u64 rx_fcs_errors;
233 u64 rx_alignment_errors;
234 u64 rx_fragment_errors;
235 u64 rx_jabber_errors;
236 u64 rx_undersize_frame_errors;
237 u64 rx_oversize_frame_errors;
238 u64 rx_dropped_frames;
239 u64 rx_unicast_byte_count;
240 u64 rx_broadcast_byte_count;
241 u64 rx_multicast_byte_count;
242 u64 rx_unicast_frames;
243 u64 rx_broadcast_frames;
244 u64 rx_multicast_frames;
245 u64 rx_pause_frames;
246 u64 rx_64_byte_frames;
247 u64 rx_65_127_byte_frames;
248 u64 rx_128_255_byte_frames;
249 u64 rx_256_511_bytes_frames;
250 u64 rx_512_1023_byte_frames;
251 u64 rx_1024_1518_byte_frames;
252 u64 rx_greater_1518_byte_frames;
253 u64 eee_rx_lpi_transitions;
254 u64 eee_rx_lpi_time;
255 u64 tx_fcs_errors;
256 u64 tx_excess_deferral_errors;
257 u64 tx_carrier_errors;
258 u64 tx_bad_byte_count;
259 u64 tx_single_collisions;
260 u64 tx_multiple_collisions;
261 u64 tx_excessive_collision;
262 u64 tx_late_collisions;
263 u64 tx_unicast_byte_count;
264 u64 tx_broadcast_byte_count;
265 u64 tx_multicast_byte_count;
266 u64 tx_unicast_frames;
267 u64 tx_broadcast_frames;
268 u64 tx_multicast_frames;
269 u64 tx_pause_frames;
270 u64 tx_64_byte_frames;
271 u64 tx_65_127_byte_frames;
272 u64 tx_128_255_byte_frames;
273 u64 tx_256_511_bytes_frames;
274 u64 tx_512_1023_byte_frames;
275 u64 tx_1024_1518_byte_frames;
276 u64 tx_greater_1518_byte_frames;
277 u64 eee_tx_lpi_transitions;
278 u64 eee_tx_lpi_time;
279};
280
281struct lan78xx_net;
282
283struct lan78xx_priv {
284 struct lan78xx_net *dev;
285 u32 rfe_ctl;
286 u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */
287 u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */
288 u32 vlan_table[DP_SEL_VHF_VLAN_LEN];
289 struct mutex dataport_mutex; /* for dataport access */
290 spinlock_t rfe_ctl_lock; /* for rfe register access */
291 struct work_struct set_multicast;
292 struct work_struct set_vlan;
293 u32 wol;
294};
295
296enum skb_state {
297 illegal = 0,
298 tx_start,
299 tx_done,
300 rx_start,
301 rx_done,
302 rx_cleanup,
303 unlink_start
304};
305
306struct skb_data { /* skb->cb is one of these */
307 struct urb *urb;
308 struct lan78xx_net *dev;
309 enum skb_state state;
310 size_t length;
311 int num_of_packet;
312};
313
314struct usb_context {
315 struct usb_ctrlrequest req;
316 struct lan78xx_net *dev;
317};
318
319#define EVENT_TX_HALT 0
320#define EVENT_RX_HALT 1
321#define EVENT_RX_MEMORY 2
322#define EVENT_STS_SPLIT 3
323#define EVENT_LINK_RESET 4
324#define EVENT_RX_PAUSED 5
325#define EVENT_DEV_WAKING 6
326#define EVENT_DEV_ASLEEP 7
327#define EVENT_DEV_OPEN 8
328#define EVENT_STAT_UPDATE 9
329
330struct statstage {
331 struct mutex access_lock; /* for stats access */
332 struct lan78xx_statstage saved;
333 struct lan78xx_statstage rollover_count;
334 struct lan78xx_statstage rollover_max;
335 struct lan78xx_statstage64 curr_stat;
336};
337
338struct irq_domain_data {
339 struct irq_domain *irqdomain;
340 unsigned int phyirq;
341 struct irq_chip *irqchip;
342 irq_flow_handler_t irq_handler;
343 u32 irqenable;
344 struct mutex irq_lock; /* for irq bus access */
345};
346
347struct lan78xx_net {
348 struct net_device *net;
349 struct usb_device *udev;
350 struct usb_interface *intf;
351 void *driver_priv;
352
353 int rx_qlen;
354 int tx_qlen;
355 struct sk_buff_head rxq;
356 struct sk_buff_head txq;
357 struct sk_buff_head done;
358 struct sk_buff_head rxq_pause;
359 struct sk_buff_head txq_pend;
360
361 struct tasklet_struct bh;
362 struct delayed_work wq;
363
364 struct usb_host_endpoint *ep_blkin;
365 struct usb_host_endpoint *ep_blkout;
366 struct usb_host_endpoint *ep_intr;
367
368 int msg_enable;
369
370 struct urb *urb_intr;
371 struct usb_anchor deferred;
372
373 struct mutex phy_mutex; /* for phy access */
374 unsigned pipe_in, pipe_out, pipe_intr;
375
376 u32 hard_mtu; /* count any extra framing */
377 size_t rx_urb_size; /* size for rx urbs */
378
379 unsigned long flags;
380
381 wait_queue_head_t *wait;
382 unsigned char suspend_count;
383
384 unsigned maxpacket;
385 struct timer_list delay;
386 struct timer_list stat_monitor;
387
388 unsigned long data[5];
389
390 int link_on;
391 u8 mdix_ctrl;
392
393 u32 chipid;
394 u32 chiprev;
395 struct mii_bus *mdiobus;
396 phy_interface_t interface;
397
398 int fc_autoneg;
399 u8 fc_request_control;
400
401 int delta;
402 struct statstage stats;
403
404 struct irq_domain_data domain_data;
405};
406
407/* define external phy id */
408#define PHY_LAN8835 (0x0007C130)
409#define PHY_KSZ9031RNX (0x00221620)
410
411/* use ethtool to change the level for any given device */
412static int msg_level = -1;
413module_param(msg_level, int, 0);
414MODULE_PARM_DESC(msg_level, "Override default message level");
415
416static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
417{
418 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL);
419 int ret;
420
421 if (!buf)
422 return -ENOMEM;
423
424 ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
425 USB_VENDOR_REQUEST_READ_REGISTER,
426 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
427 0, index, buf, 4, USB_CTRL_GET_TIMEOUT);
428 if (likely(ret >= 0)) {
429 le32_to_cpus(buf);
430 *data = *buf;
431 } else {
432 netdev_warn(dev->net,
433 "Failed to read register index 0x%08x. ret = %d",
434 index, ret);
435 }
436
437 kfree(buf);
438
439 return ret;
440}
441
442static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data)
443{
444 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL);
445 int ret;
446
447 if (!buf)
448 return -ENOMEM;
449
450 *buf = data;
451 cpu_to_le32s(buf);
452
453 ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
454 USB_VENDOR_REQUEST_WRITE_REGISTER,
455 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
456 0, index, buf, 4, USB_CTRL_SET_TIMEOUT);
457 if (unlikely(ret < 0)) {
458 netdev_warn(dev->net,
459 "Failed to write register index 0x%08x. ret = %d",
460 index, ret);
461 }
462
463 kfree(buf);
464
465 return ret;
466}
467
468static int lan78xx_read_stats(struct lan78xx_net *dev,
469 struct lan78xx_statstage *data)
470{
471 int ret = 0;
472 int i;
473 struct lan78xx_statstage *stats;
474 u32 *src;
475 u32 *dst;
476
477 stats = kmalloc(sizeof(*stats), GFP_KERNEL);
478 if (!stats)
479 return -ENOMEM;
480
481 ret = usb_control_msg(dev->udev,
482 usb_rcvctrlpipe(dev->udev, 0),
483 USB_VENDOR_REQUEST_GET_STATS,
484 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
485 0,
486 0,
487 (void *)stats,
488 sizeof(*stats),
489 USB_CTRL_SET_TIMEOUT);
490 if (likely(ret >= 0)) {
491 src = (u32 *)stats;
492 dst = (u32 *)data;
493 for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) {
494 le32_to_cpus(&src[i]);
495 dst[i] = src[i];
496 }
497 } else {
498 netdev_warn(dev->net,
499 "Failed to read stat ret = 0x%x", ret);
500 }
501
502 kfree(stats);
503
504 return ret;
505}
506
507#define check_counter_rollover(struct1, dev_stats, member) { \
508 if (struct1->member < dev_stats.saved.member) \
509 dev_stats.rollover_count.member++; \
510 }
511
512static void lan78xx_check_stat_rollover(struct lan78xx_net *dev,
513 struct lan78xx_statstage *stats)
514{
515 check_counter_rollover(stats, dev->stats, rx_fcs_errors);
516 check_counter_rollover(stats, dev->stats, rx_alignment_errors);
517 check_counter_rollover(stats, dev->stats, rx_fragment_errors);
518 check_counter_rollover(stats, dev->stats, rx_jabber_errors);
519 check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors);
520 check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors);
521 check_counter_rollover(stats, dev->stats, rx_dropped_frames);
522 check_counter_rollover(stats, dev->stats, rx_unicast_byte_count);
523 check_counter_rollover(stats, dev->stats, rx_broadcast_byte_count);
524 check_counter_rollover(stats, dev->stats, rx_multicast_byte_count);
525 check_counter_rollover(stats, dev->stats, rx_unicast_frames);
526 check_counter_rollover(stats, dev->stats, rx_broadcast_frames);
527 check_counter_rollover(stats, dev->stats, rx_multicast_frames);
528 check_counter_rollover(stats, dev->stats, rx_pause_frames);
529 check_counter_rollover(stats, dev->stats, rx_64_byte_frames);
530 check_counter_rollover(stats, dev->stats, rx_65_127_byte_frames);
531 check_counter_rollover(stats, dev->stats, rx_128_255_byte_frames);
532 check_counter_rollover(stats, dev->stats, rx_256_511_bytes_frames);
533 check_counter_rollover(stats, dev->stats, rx_512_1023_byte_frames);
534 check_counter_rollover(stats, dev->stats, rx_1024_1518_byte_frames);
535 check_counter_rollover(stats, dev->stats, rx_greater_1518_byte_frames);
536 check_counter_rollover(stats, dev->stats, eee_rx_lpi_transitions);
537 check_counter_rollover(stats, dev->stats, eee_rx_lpi_time);
538 check_counter_rollover(stats, dev->stats, tx_fcs_errors);
539 check_counter_rollover(stats, dev->stats, tx_excess_deferral_errors);
540 check_counter_rollover(stats, dev->stats, tx_carrier_errors);
541 check_counter_rollover(stats, dev->stats, tx_bad_byte_count);
542 check_counter_rollover(stats, dev->stats, tx_single_collisions);
543 check_counter_rollover(stats, dev->stats, tx_multiple_collisions);
544 check_counter_rollover(stats, dev->stats, tx_excessive_collision);
545 check_counter_rollover(stats, dev->stats, tx_late_collisions);
546 check_counter_rollover(stats, dev->stats, tx_unicast_byte_count);
547 check_counter_rollover(stats, dev->stats, tx_broadcast_byte_count);
548 check_counter_rollover(stats, dev->stats, tx_multicast_byte_count);
549 check_counter_rollover(stats, dev->stats, tx_unicast_frames);
550 check_counter_rollover(stats, dev->stats, tx_broadcast_frames);
551 check_counter_rollover(stats, dev->stats, tx_multicast_frames);
552 check_counter_rollover(stats, dev->stats, tx_pause_frames);
553 check_counter_rollover(stats, dev->stats, tx_64_byte_frames);
554 check_counter_rollover(stats, dev->stats, tx_65_127_byte_frames);
555 check_counter_rollover(stats, dev->stats, tx_128_255_byte_frames);
556 check_counter_rollover(stats, dev->stats, tx_256_511_bytes_frames);
557 check_counter_rollover(stats, dev->stats, tx_512_1023_byte_frames);
558 check_counter_rollover(stats, dev->stats, tx_1024_1518_byte_frames);
559 check_counter_rollover(stats, dev->stats, tx_greater_1518_byte_frames);
560 check_counter_rollover(stats, dev->stats, eee_tx_lpi_transitions);
561 check_counter_rollover(stats, dev->stats, eee_tx_lpi_time);
562
563 memcpy(&dev->stats.saved, stats, sizeof(struct lan78xx_statstage));
564}
565
566static void lan78xx_update_stats(struct lan78xx_net *dev)
567{
568 u32 *p, *count, *max;
569 u64 *data;
570 int i;
571 struct lan78xx_statstage lan78xx_stats;
572
573 if (usb_autopm_get_interface(dev->intf) < 0)
574 return;
575
576 p = (u32 *)&lan78xx_stats;
577 count = (u32 *)&dev->stats.rollover_count;
578 max = (u32 *)&dev->stats.rollover_max;
579 data = (u64 *)&dev->stats.curr_stat;
580
581 mutex_lock(&dev->stats.access_lock);
582
583 if (lan78xx_read_stats(dev, &lan78xx_stats) > 0)
584 lan78xx_check_stat_rollover(dev, &lan78xx_stats);
585
586 for (i = 0; i < (sizeof(lan78xx_stats) / (sizeof(u32))); i++)
587 data[i] = (u64)p[i] + ((u64)count[i] * ((u64)max[i] + 1));
588
589 mutex_unlock(&dev->stats.access_lock);
590
591 usb_autopm_put_interface(dev->intf);
592}
593
594/* Loop until the read is completed with timeout called with phy_mutex held */
595static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev)
596{
597 unsigned long start_time = jiffies;
598 u32 val;
599 int ret;
600
601 do {
602 ret = lan78xx_read_reg(dev, MII_ACC, &val);
603 if (unlikely(ret < 0))
604 return -EIO;
605
606 if (!(val & MII_ACC_MII_BUSY_))
607 return 0;
608 } while (!time_after(jiffies, start_time + HZ));
609
610 return -EIO;
611}
612
613static inline u32 mii_access(int id, int index, int read)
614{
615 u32 ret;
616
617 ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_;
618 ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_;
619 if (read)
620 ret |= MII_ACC_MII_READ_;
621 else
622 ret |= MII_ACC_MII_WRITE_;
623 ret |= MII_ACC_MII_BUSY_;
624
625 return ret;
626}
627
628static int lan78xx_wait_eeprom(struct lan78xx_net *dev)
629{
630 unsigned long start_time = jiffies;
631 u32 val;
632 int ret;
633
634 do {
635 ret = lan78xx_read_reg(dev, E2P_CMD, &val);
636 if (unlikely(ret < 0))
637 return -EIO;
638
639 if (!(val & E2P_CMD_EPC_BUSY_) ||
640 (val & E2P_CMD_EPC_TIMEOUT_))
641 break;
642 usleep_range(40, 100);
643 } while (!time_after(jiffies, start_time + HZ));
644
645 if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) {
646 netdev_warn(dev->net, "EEPROM read operation timeout");
647 return -EIO;
648 }
649
650 return 0;
651}
652
653static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev)
654{
655 unsigned long start_time = jiffies;
656 u32 val;
657 int ret;
658
659 do {
660 ret = lan78xx_read_reg(dev, E2P_CMD, &val);
661 if (unlikely(ret < 0))
662 return -EIO;
663
664 if (!(val & E2P_CMD_EPC_BUSY_))
665 return 0;
666
667 usleep_range(40, 100);
668 } while (!time_after(jiffies, start_time + HZ));
669
670 netdev_warn(dev->net, "EEPROM is busy");
671 return -EIO;
672}
673
674static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset,
675 u32 length, u8 *data)
676{
677 u32 val;
678 u32 saved;
679 int i, ret;
680 int retval;
681
682 /* depends on chip, some EEPROM pins are muxed with LED function.
683 * disable & restore LED function to access EEPROM.
684 */
685 ret = lan78xx_read_reg(dev, HW_CFG, &val);
686 saved = val;
687 if (dev->chipid == ID_REV_CHIP_ID_7800_) {
688 val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
689 ret = lan78xx_write_reg(dev, HW_CFG, val);
690 }
691
692 retval = lan78xx_eeprom_confirm_not_busy(dev);
693 if (retval)
694 return retval;
695
696 for (i = 0; i < length; i++) {
697 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_;
698 val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
699 ret = lan78xx_write_reg(dev, E2P_CMD, val);
700 if (unlikely(ret < 0)) {
701 retval = -EIO;
702 goto exit;
703 }
704
705 retval = lan78xx_wait_eeprom(dev);
706 if (retval < 0)
707 goto exit;
708
709 ret = lan78xx_read_reg(dev, E2P_DATA, &val);
710 if (unlikely(ret < 0)) {
711 retval = -EIO;
712 goto exit;
713 }
714
715 data[i] = val & 0xFF;
716 offset++;
717 }
718
719 retval = 0;
720exit:
721 if (dev->chipid == ID_REV_CHIP_ID_7800_)
722 ret = lan78xx_write_reg(dev, HW_CFG, saved);
723
724 return retval;
725}
726
727static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset,
728 u32 length, u8 *data)
729{
730 u8 sig;
731 int ret;
732
733 ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig);
734 if ((ret == 0) && (sig == EEPROM_INDICATOR))
735 ret = lan78xx_read_raw_eeprom(dev, offset, length, data);
736 else
737 ret = -EINVAL;
738
739 return ret;
740}
741
742static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset,
743 u32 length, u8 *data)
744{
745 u32 val;
746 u32 saved;
747 int i, ret;
748 int retval;
749
750 /* depends on chip, some EEPROM pins are muxed with LED function.
751 * disable & restore LED function to access EEPROM.
752 */
753 ret = lan78xx_read_reg(dev, HW_CFG, &val);
754 saved = val;
755 if (dev->chipid == ID_REV_CHIP_ID_7800_) {
756 val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
757 ret = lan78xx_write_reg(dev, HW_CFG, val);
758 }
759
760 retval = lan78xx_eeprom_confirm_not_busy(dev);
761 if (retval)
762 goto exit;
763
764 /* Issue write/erase enable command */
765 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_;
766 ret = lan78xx_write_reg(dev, E2P_CMD, val);
767 if (unlikely(ret < 0)) {
768 retval = -EIO;
769 goto exit;
770 }
771
772 retval = lan78xx_wait_eeprom(dev);
773 if (retval < 0)
774 goto exit;
775
776 for (i = 0; i < length; i++) {
777 /* Fill data register */
778 val = data[i];
779 ret = lan78xx_write_reg(dev, E2P_DATA, val);
780 if (ret < 0) {
781 retval = -EIO;
782 goto exit;
783 }
784
785 /* Send "write" command */
786 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_;
787 val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
788 ret = lan78xx_write_reg(dev, E2P_CMD, val);
789 if (ret < 0) {
790 retval = -EIO;
791 goto exit;
792 }
793
794 retval = lan78xx_wait_eeprom(dev);
795 if (retval < 0)
796 goto exit;
797
798 offset++;
799 }
800
801 retval = 0;
802exit:
803 if (dev->chipid == ID_REV_CHIP_ID_7800_)
804 ret = lan78xx_write_reg(dev, HW_CFG, saved);
805
806 return retval;
807}
808
809static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset,
810 u32 length, u8 *data)
811{
812 int i;
813 int ret;
814 u32 buf;
815 unsigned long timeout;
816
817 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
818
819 if (buf & OTP_PWR_DN_PWRDN_N_) {
820 /* clear it and wait to be cleared */
821 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0);
822
823 timeout = jiffies + HZ;
824 do {
825 usleep_range(1, 10);
826 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
827 if (time_after(jiffies, timeout)) {
828 netdev_warn(dev->net,
829 "timeout on OTP_PWR_DN");
830 return -EIO;
831 }
832 } while (buf & OTP_PWR_DN_PWRDN_N_);
833 }
834
835 for (i = 0; i < length; i++) {
836 ret = lan78xx_write_reg(dev, OTP_ADDR1,
837 ((offset + i) >> 8) & OTP_ADDR1_15_11);
838 ret = lan78xx_write_reg(dev, OTP_ADDR2,
839 ((offset + i) & OTP_ADDR2_10_3));
840
841 ret = lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_);
842 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
843
844 timeout = jiffies + HZ;
845 do {
846 udelay(1);
847 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf);
848 if (time_after(jiffies, timeout)) {
849 netdev_warn(dev->net,
850 "timeout on OTP_STATUS");
851 return -EIO;
852 }
853 } while (buf & OTP_STATUS_BUSY_);
854
855 ret = lan78xx_read_reg(dev, OTP_RD_DATA, &buf);
856
857 data[i] = (u8)(buf & 0xFF);
858 }
859
860 return 0;
861}
862
863static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset,
864 u32 length, u8 *data)
865{
866 int i;
867 int ret;
868 u32 buf;
869 unsigned long timeout;
870
871 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
872
873 if (buf & OTP_PWR_DN_PWRDN_N_) {
874 /* clear it and wait to be cleared */
875 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0);
876
877 timeout = jiffies + HZ;
878 do {
879 udelay(1);
880 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
881 if (time_after(jiffies, timeout)) {
882 netdev_warn(dev->net,
883 "timeout on OTP_PWR_DN completion");
884 return -EIO;
885 }
886 } while (buf & OTP_PWR_DN_PWRDN_N_);
887 }
888
889 /* set to BYTE program mode */
890 ret = lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_);
891
892 for (i = 0; i < length; i++) {
893 ret = lan78xx_write_reg(dev, OTP_ADDR1,
894 ((offset + i) >> 8) & OTP_ADDR1_15_11);
895 ret = lan78xx_write_reg(dev, OTP_ADDR2,
896 ((offset + i) & OTP_ADDR2_10_3));
897 ret = lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]);
898 ret = lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_);
899 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
900
901 timeout = jiffies + HZ;
902 do {
903 udelay(1);
904 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf);
905 if (time_after(jiffies, timeout)) {
906 netdev_warn(dev->net,
907 "Timeout on OTP_STATUS completion");
908 return -EIO;
909 }
910 } while (buf & OTP_STATUS_BUSY_);
911 }
912
913 return 0;
914}
915
916static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset,
917 u32 length, u8 *data)
918{
919 u8 sig;
920 int ret;
921
922 ret = lan78xx_read_raw_otp(dev, 0, 1, &sig);
923
924 if (ret == 0) {
925 if (sig == OTP_INDICATOR_1)
926 offset = offset;
927 else if (sig == OTP_INDICATOR_2)
928 offset += 0x100;
929 else
930 ret = -EINVAL;
931 if (!ret)
932 ret = lan78xx_read_raw_otp(dev, offset, length, data);
933 }
934
935 return ret;
936}
937
938static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev)
939{
940 int i, ret;
941
942 for (i = 0; i < 100; i++) {
943 u32 dp_sel;
944
945 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
946 if (unlikely(ret < 0))
947 return -EIO;
948
949 if (dp_sel & DP_SEL_DPRDY_)
950 return 0;
951
952 usleep_range(40, 100);
953 }
954
955 netdev_warn(dev->net, "lan78xx_dataport_wait_not_busy timed out");
956
957 return -EIO;
958}
959
960static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select,
961 u32 addr, u32 length, u32 *buf)
962{
963 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
964 u32 dp_sel;
965 int i, ret;
966
967 if (usb_autopm_get_interface(dev->intf) < 0)
968 return 0;
969
970 mutex_lock(&pdata->dataport_mutex);
971
972 ret = lan78xx_dataport_wait_not_busy(dev);
973 if (ret < 0)
974 goto done;
975
976 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
977
978 dp_sel &= ~DP_SEL_RSEL_MASK_;
979 dp_sel |= ram_select;
980 ret = lan78xx_write_reg(dev, DP_SEL, dp_sel);
981
982 for (i = 0; i < length; i++) {
983 ret = lan78xx_write_reg(dev, DP_ADDR, addr + i);
984
985 ret = lan78xx_write_reg(dev, DP_DATA, buf[i]);
986
987 ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_);
988
989 ret = lan78xx_dataport_wait_not_busy(dev);
990 if (ret < 0)
991 goto done;
992 }
993
994done:
995 mutex_unlock(&pdata->dataport_mutex);
996 usb_autopm_put_interface(dev->intf);
997
998 return ret;
999}
1000
1001static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata,
1002 int index, u8 addr[ETH_ALEN])
1003{
1004 u32 temp;
1005
1006 if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) {
1007 temp = addr[3];
1008 temp = addr[2] | (temp << 8);
1009 temp = addr[1] | (temp << 8);
1010 temp = addr[0] | (temp << 8);
1011 pdata->pfilter_table[index][1] = temp;
1012 temp = addr[5];
1013 temp = addr[4] | (temp << 8);
1014 temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_;
1015 pdata->pfilter_table[index][0] = temp;
1016 }
1017}
1018
1019/* returns hash bit number for given MAC address */
1020static inline u32 lan78xx_hash(char addr[ETH_ALEN])
1021{
1022 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
1023}
1024
1025static void lan78xx_deferred_multicast_write(struct work_struct *param)
1026{
1027 struct lan78xx_priv *pdata =
1028 container_of(param, struct lan78xx_priv, set_multicast);
1029 struct lan78xx_net *dev = pdata->dev;
1030 int i;
1031 int ret;
1032
1033 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
1034 pdata->rfe_ctl);
1035
1036 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN,
1037 DP_SEL_VHF_HASH_LEN, pdata->mchash_table);
1038
1039 for (i = 1; i < NUM_OF_MAF; i++) {
1040 ret = lan78xx_write_reg(dev, MAF_HI(i), 0);
1041 ret = lan78xx_write_reg(dev, MAF_LO(i),
1042 pdata->pfilter_table[i][1]);
1043 ret = lan78xx_write_reg(dev, MAF_HI(i),
1044 pdata->pfilter_table[i][0]);
1045 }
1046
1047 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1048}
1049
1050static void lan78xx_set_multicast(struct net_device *netdev)
1051{
1052 struct lan78xx_net *dev = netdev_priv(netdev);
1053 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1054 unsigned long flags;
1055 int i;
1056
1057 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
1058
1059 pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ |
1060 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1061
1062 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
1063 pdata->mchash_table[i] = 0;
1064 /* pfilter_table[0] has own HW address */
1065 for (i = 1; i < NUM_OF_MAF; i++) {
1066 pdata->pfilter_table[i][0] =
1067 pdata->pfilter_table[i][1] = 0;
1068 }
1069
1070 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_;
1071
1072 if (dev->net->flags & IFF_PROMISC) {
1073 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled");
1074 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_;
1075 } else {
1076 if (dev->net->flags & IFF_ALLMULTI) {
1077 netif_dbg(dev, drv, dev->net,
1078 "receive all multicast enabled");
1079 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_;
1080 }
1081 }
1082
1083 if (netdev_mc_count(dev->net)) {
1084 struct netdev_hw_addr *ha;
1085 int i;
1086
1087 netif_dbg(dev, drv, dev->net, "receive multicast hash filter");
1088
1089 pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_;
1090
1091 i = 1;
1092 netdev_for_each_mc_addr(ha, netdev) {
1093 /* set first 32 into Perfect Filter */
1094 if (i < 33) {
1095 lan78xx_set_addr_filter(pdata, i, ha->addr);
1096 } else {
1097 u32 bitnum = lan78xx_hash(ha->addr);
1098
1099 pdata->mchash_table[bitnum / 32] |=
1100 (1 << (bitnum % 32));
1101 pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_;
1102 }
1103 i++;
1104 }
1105 }
1106
1107 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
1108
1109 /* defer register writes to a sleepable context */
1110 schedule_work(&pdata->set_multicast);
1111}
1112
1113static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex,
1114 u16 lcladv, u16 rmtadv)
1115{
1116 u32 flow = 0, fct_flow = 0;
1117 int ret;
1118 u8 cap;
1119
1120 if (dev->fc_autoneg)
1121 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
1122 else
1123 cap = dev->fc_request_control;
1124
1125 if (cap & FLOW_CTRL_TX)
1126 flow |= (FLOW_CR_TX_FCEN_ | 0xFFFF);
1127
1128 if (cap & FLOW_CTRL_RX)
1129 flow |= FLOW_CR_RX_FCEN_;
1130
1131 if (dev->udev->speed == USB_SPEED_SUPER)
1132 fct_flow = 0x817;
1133 else if (dev->udev->speed == USB_SPEED_HIGH)
1134 fct_flow = 0x211;
1135
1136 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s",
1137 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
1138 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
1139
1140 ret = lan78xx_write_reg(dev, FCT_FLOW, fct_flow);
1141
1142 /* threshold value should be set before enabling flow */
1143 ret = lan78xx_write_reg(dev, FLOW, flow);
1144
1145 return 0;
1146}
1147
1148static int lan78xx_link_reset(struct lan78xx_net *dev)
1149{
1150 struct phy_device *phydev = dev->net->phydev;
1151 struct ethtool_link_ksettings ecmd;
1152 int ladv, radv, ret;
1153 u32 buf;
1154
1155 /* clear LAN78xx interrupt status */
1156 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_);
1157 if (unlikely(ret < 0))
1158 return -EIO;
1159
1160 phy_read_status(phydev);
1161
1162 if (!phydev->link && dev->link_on) {
1163 dev->link_on = false;
1164
1165 /* reset MAC */
1166 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1167 if (unlikely(ret < 0))
1168 return -EIO;
1169 buf |= MAC_CR_RST_;
1170 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1171 if (unlikely(ret < 0))
1172 return -EIO;
1173
1174 del_timer(&dev->stat_monitor);
1175 } else if (phydev->link && !dev->link_on) {
1176 dev->link_on = true;
1177
1178 phy_ethtool_ksettings_get(phydev, &ecmd);
1179
1180 if (dev->udev->speed == USB_SPEED_SUPER) {
1181 if (ecmd.base.speed == 1000) {
1182 /* disable U2 */
1183 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1184 buf &= ~USB_CFG1_DEV_U2_INIT_EN_;
1185 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1186 /* enable U1 */
1187 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1188 buf |= USB_CFG1_DEV_U1_INIT_EN_;
1189 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1190 } else {
1191 /* enable U1 & U2 */
1192 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1193 buf |= USB_CFG1_DEV_U2_INIT_EN_;
1194 buf |= USB_CFG1_DEV_U1_INIT_EN_;
1195 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1196 }
1197 }
1198
1199 ladv = phy_read(phydev, MII_ADVERTISE);
1200 if (ladv < 0)
1201 return ladv;
1202
1203 radv = phy_read(phydev, MII_LPA);
1204 if (radv < 0)
1205 return radv;
1206
1207 netif_dbg(dev, link, dev->net,
1208 "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x",
1209 ecmd.base.speed, ecmd.base.duplex, ladv, radv);
1210
1211 ret = lan78xx_update_flowcontrol(dev, ecmd.base.duplex, ladv,
1212 radv);
1213
1214 if (!timer_pending(&dev->stat_monitor)) {
1215 dev->delta = 1;
1216 mod_timer(&dev->stat_monitor,
1217 jiffies + STAT_UPDATE_TIMER);
1218 }
1219 }
1220
1221 return ret;
1222}
1223
1224/* some work can't be done in tasklets, so we use keventd
1225 *
1226 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
1227 * but tasklet_schedule() doesn't. hope the failure is rare.
1228 */
1229static void lan78xx_defer_kevent(struct lan78xx_net *dev, int work)
1230{
1231 set_bit(work, &dev->flags);
1232 if (!schedule_delayed_work(&dev->wq, 0))
1233 netdev_err(dev->net, "kevent %d may have been dropped\n", work);
1234}
1235
1236static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb)
1237{
1238 u32 intdata;
1239
1240 if (urb->actual_length != 4) {
1241 netdev_warn(dev->net,
1242 "unexpected urb length %d", urb->actual_length);
1243 return;
1244 }
1245
1246 memcpy(&intdata, urb->transfer_buffer, 4);
1247 le32_to_cpus(&intdata);
1248
1249 if (intdata & INT_ENP_PHY_INT) {
1250 netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata);
1251 lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
1252
1253 if (dev->domain_data.phyirq > 0)
1254 generic_handle_irq(dev->domain_data.phyirq);
1255 } else
1256 netdev_warn(dev->net,
1257 "unexpected interrupt: 0x%08x\n", intdata);
1258}
1259
1260static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev)
1261{
1262 return MAX_EEPROM_SIZE;
1263}
1264
1265static int lan78xx_ethtool_get_eeprom(struct net_device *netdev,
1266 struct ethtool_eeprom *ee, u8 *data)
1267{
1268 struct lan78xx_net *dev = netdev_priv(netdev);
1269 int ret;
1270
1271 ret = usb_autopm_get_interface(dev->intf);
1272 if (ret)
1273 return ret;
1274
1275 ee->magic = LAN78XX_EEPROM_MAGIC;
1276
1277 ret = lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data);
1278
1279 usb_autopm_put_interface(dev->intf);
1280
1281 return ret;
1282}
1283
1284static int lan78xx_ethtool_set_eeprom(struct net_device *netdev,
1285 struct ethtool_eeprom *ee, u8 *data)
1286{
1287 struct lan78xx_net *dev = netdev_priv(netdev);
1288 int ret;
1289
1290 ret = usb_autopm_get_interface(dev->intf);
1291 if (ret)
1292 return ret;
1293
1294 /* Invalid EEPROM_INDICATOR at offset zero will result in a failure
1295 * to load data from EEPROM
1296 */
1297 if (ee->magic == LAN78XX_EEPROM_MAGIC)
1298 ret = lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data);
1299 else if ((ee->magic == LAN78XX_OTP_MAGIC) &&
1300 (ee->offset == 0) &&
1301 (ee->len == 512) &&
1302 (data[0] == OTP_INDICATOR_1))
1303 ret = lan78xx_write_raw_otp(dev, ee->offset, ee->len, data);
1304
1305 usb_autopm_put_interface(dev->intf);
1306
1307 return ret;
1308}
1309
1310static void lan78xx_get_strings(struct net_device *netdev, u32 stringset,
1311 u8 *data)
1312{
1313 if (stringset == ETH_SS_STATS)
1314 memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings));
1315}
1316
1317static int lan78xx_get_sset_count(struct net_device *netdev, int sset)
1318{
1319 if (sset == ETH_SS_STATS)
1320 return ARRAY_SIZE(lan78xx_gstrings);
1321 else
1322 return -EOPNOTSUPP;
1323}
1324
1325static void lan78xx_get_stats(struct net_device *netdev,
1326 struct ethtool_stats *stats, u64 *data)
1327{
1328 struct lan78xx_net *dev = netdev_priv(netdev);
1329
1330 lan78xx_update_stats(dev);
1331
1332 mutex_lock(&dev->stats.access_lock);
1333 memcpy(data, &dev->stats.curr_stat, sizeof(dev->stats.curr_stat));
1334 mutex_unlock(&dev->stats.access_lock);
1335}
1336
1337static void lan78xx_get_wol(struct net_device *netdev,
1338 struct ethtool_wolinfo *wol)
1339{
1340 struct lan78xx_net *dev = netdev_priv(netdev);
1341 int ret;
1342 u32 buf;
1343 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1344
1345 if (usb_autopm_get_interface(dev->intf) < 0)
1346 return;
1347
1348 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
1349 if (unlikely(ret < 0)) {
1350 wol->supported = 0;
1351 wol->wolopts = 0;
1352 } else {
1353 if (buf & USB_CFG_RMT_WKP_) {
1354 wol->supported = WAKE_ALL;
1355 wol->wolopts = pdata->wol;
1356 } else {
1357 wol->supported = 0;
1358 wol->wolopts = 0;
1359 }
1360 }
1361
1362 usb_autopm_put_interface(dev->intf);
1363}
1364
1365static int lan78xx_set_wol(struct net_device *netdev,
1366 struct ethtool_wolinfo *wol)
1367{
1368 struct lan78xx_net *dev = netdev_priv(netdev);
1369 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1370 int ret;
1371
1372 ret = usb_autopm_get_interface(dev->intf);
1373 if (ret < 0)
1374 return ret;
1375
1376 pdata->wol = 0;
1377 if (wol->wolopts & WAKE_UCAST)
1378 pdata->wol |= WAKE_UCAST;
1379 if (wol->wolopts & WAKE_MCAST)
1380 pdata->wol |= WAKE_MCAST;
1381 if (wol->wolopts & WAKE_BCAST)
1382 pdata->wol |= WAKE_BCAST;
1383 if (wol->wolopts & WAKE_MAGIC)
1384 pdata->wol |= WAKE_MAGIC;
1385 if (wol->wolopts & WAKE_PHY)
1386 pdata->wol |= WAKE_PHY;
1387 if (wol->wolopts & WAKE_ARP)
1388 pdata->wol |= WAKE_ARP;
1389
1390 device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);
1391
1392 phy_ethtool_set_wol(netdev->phydev, wol);
1393
1394 usb_autopm_put_interface(dev->intf);
1395
1396 return ret;
1397}
1398
1399static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata)
1400{
1401 struct lan78xx_net *dev = netdev_priv(net);
1402 struct phy_device *phydev = net->phydev;
1403 int ret;
1404 u32 buf;
1405
1406 ret = usb_autopm_get_interface(dev->intf);
1407 if (ret < 0)
1408 return ret;
1409
1410 ret = phy_ethtool_get_eee(phydev, edata);
1411 if (ret < 0)
1412 goto exit;
1413
1414 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1415 if (buf & MAC_CR_EEE_EN_) {
1416 edata->eee_enabled = true;
1417 edata->eee_active = !!(edata->advertised &
1418 edata->lp_advertised);
1419 edata->tx_lpi_enabled = true;
1420 /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */
1421 ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf);
1422 edata->tx_lpi_timer = buf;
1423 } else {
1424 edata->eee_enabled = false;
1425 edata->eee_active = false;
1426 edata->tx_lpi_enabled = false;
1427 edata->tx_lpi_timer = 0;
1428 }
1429
1430 ret = 0;
1431exit:
1432 usb_autopm_put_interface(dev->intf);
1433
1434 return ret;
1435}
1436
1437static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata)
1438{
1439 struct lan78xx_net *dev = netdev_priv(net);
1440 int ret;
1441 u32 buf;
1442
1443 ret = usb_autopm_get_interface(dev->intf);
1444 if (ret < 0)
1445 return ret;
1446
1447 if (edata->eee_enabled) {
1448 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1449 buf |= MAC_CR_EEE_EN_;
1450 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1451
1452 phy_ethtool_set_eee(net->phydev, edata);
1453
1454 buf = (u32)edata->tx_lpi_timer;
1455 ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf);
1456 } else {
1457 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1458 buf &= ~MAC_CR_EEE_EN_;
1459 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1460 }
1461
1462 usb_autopm_put_interface(dev->intf);
1463
1464 return 0;
1465}
1466
1467static u32 lan78xx_get_link(struct net_device *net)
1468{
1469 phy_read_status(net->phydev);
1470
1471 return net->phydev->link;
1472}
1473
1474static void lan78xx_get_drvinfo(struct net_device *net,
1475 struct ethtool_drvinfo *info)
1476{
1477 struct lan78xx_net *dev = netdev_priv(net);
1478
1479 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
1480 strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
1481 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));
1482}
1483
1484static u32 lan78xx_get_msglevel(struct net_device *net)
1485{
1486 struct lan78xx_net *dev = netdev_priv(net);
1487
1488 return dev->msg_enable;
1489}
1490
1491static void lan78xx_set_msglevel(struct net_device *net, u32 level)
1492{
1493 struct lan78xx_net *dev = netdev_priv(net);
1494
1495 dev->msg_enable = level;
1496}
1497
1498static int lan78xx_get_link_ksettings(struct net_device *net,
1499 struct ethtool_link_ksettings *cmd)
1500{
1501 struct lan78xx_net *dev = netdev_priv(net);
1502 struct phy_device *phydev = net->phydev;
1503 int ret;
1504
1505 ret = usb_autopm_get_interface(dev->intf);
1506 if (ret < 0)
1507 return ret;
1508
1509 phy_ethtool_ksettings_get(phydev, cmd);
1510
1511 usb_autopm_put_interface(dev->intf);
1512
1513 return ret;
1514}
1515
1516static int lan78xx_set_link_ksettings(struct net_device *net,
1517 const struct ethtool_link_ksettings *cmd)
1518{
1519 struct lan78xx_net *dev = netdev_priv(net);
1520 struct phy_device *phydev = net->phydev;
1521 int ret = 0;
1522 int temp;
1523
1524 ret = usb_autopm_get_interface(dev->intf);
1525 if (ret < 0)
1526 return ret;
1527
1528 /* change speed & duplex */
1529 ret = phy_ethtool_ksettings_set(phydev, cmd);
1530
1531 if (!cmd->base.autoneg) {
1532 /* force link down */
1533 temp = phy_read(phydev, MII_BMCR);
1534 phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK);
1535 mdelay(1);
1536 phy_write(phydev, MII_BMCR, temp);
1537 }
1538
1539 usb_autopm_put_interface(dev->intf);
1540
1541 return ret;
1542}
1543
1544static void lan78xx_get_pause(struct net_device *net,
1545 struct ethtool_pauseparam *pause)
1546{
1547 struct lan78xx_net *dev = netdev_priv(net);
1548 struct phy_device *phydev = net->phydev;
1549 struct ethtool_link_ksettings ecmd;
1550
1551 phy_ethtool_ksettings_get(phydev, &ecmd);
1552
1553 pause->autoneg = dev->fc_autoneg;
1554
1555 if (dev->fc_request_control & FLOW_CTRL_TX)
1556 pause->tx_pause = 1;
1557
1558 if (dev->fc_request_control & FLOW_CTRL_RX)
1559 pause->rx_pause = 1;
1560}
1561
1562static int lan78xx_set_pause(struct net_device *net,
1563 struct ethtool_pauseparam *pause)
1564{
1565 struct lan78xx_net *dev = netdev_priv(net);
1566 struct phy_device *phydev = net->phydev;
1567 struct ethtool_link_ksettings ecmd;
1568 int ret;
1569
1570 phy_ethtool_ksettings_get(phydev, &ecmd);
1571
1572 if (pause->autoneg && !ecmd.base.autoneg) {
1573 ret = -EINVAL;
1574 goto exit;
1575 }
1576
1577 dev->fc_request_control = 0;
1578 if (pause->rx_pause)
1579 dev->fc_request_control |= FLOW_CTRL_RX;
1580
1581 if (pause->tx_pause)
1582 dev->fc_request_control |= FLOW_CTRL_TX;
1583
1584 if (ecmd.base.autoneg) {
1585 u32 mii_adv;
1586 u32 advertising;
1587
1588 ethtool_convert_link_mode_to_legacy_u32(
1589 &advertising, ecmd.link_modes.advertising);
1590
1591 advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
1592 mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
1593 advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
1594
1595 ethtool_convert_legacy_u32_to_link_mode(
1596 ecmd.link_modes.advertising, advertising);
1597
1598 phy_ethtool_ksettings_set(phydev, &ecmd);
1599 }
1600
1601 dev->fc_autoneg = pause->autoneg;
1602
1603 ret = 0;
1604exit:
1605 return ret;
1606}
1607
1608static const struct ethtool_ops lan78xx_ethtool_ops = {
1609 .get_link = lan78xx_get_link,
1610 .nway_reset = phy_ethtool_nway_reset,
1611 .get_drvinfo = lan78xx_get_drvinfo,
1612 .get_msglevel = lan78xx_get_msglevel,
1613 .set_msglevel = lan78xx_set_msglevel,
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 .get_link_ksettings = lan78xx_get_link_ksettings,
1627 .set_link_ksettings = lan78xx_set_link_ksettings,
1628};
1629
1630static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
1631{
1632 if (!netif_running(netdev))
1633 return -EINVAL;
1634
1635 return phy_mii_ioctl(netdev->phydev, rq, cmd);
1636}
1637
1638static void lan78xx_init_mac_address(struct lan78xx_net *dev)
1639{
1640 u32 addr_lo, addr_hi;
1641 int ret;
1642 u8 addr[6];
1643
1644 ret = lan78xx_read_reg(dev, RX_ADDRL, &addr_lo);
1645 ret = lan78xx_read_reg(dev, RX_ADDRH, &addr_hi);
1646
1647 addr[0] = addr_lo & 0xFF;
1648 addr[1] = (addr_lo >> 8) & 0xFF;
1649 addr[2] = (addr_lo >> 16) & 0xFF;
1650 addr[3] = (addr_lo >> 24) & 0xFF;
1651 addr[4] = addr_hi & 0xFF;
1652 addr[5] = (addr_hi >> 8) & 0xFF;
1653
1654 if (!is_valid_ether_addr(addr)) {
1655 /* reading mac address from EEPROM or OTP */
1656 if ((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
1657 addr) == 0) ||
1658 (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
1659 addr) == 0)) {
1660 if (is_valid_ether_addr(addr)) {
1661 /* eeprom values are valid so use them */
1662 netif_dbg(dev, ifup, dev->net,
1663 "MAC address read from EEPROM");
1664 } else {
1665 /* generate random MAC */
1666 random_ether_addr(addr);
1667 netif_dbg(dev, ifup, dev->net,
1668 "MAC address set to random addr");
1669 }
1670
1671 addr_lo = addr[0] | (addr[1] << 8) |
1672 (addr[2] << 16) | (addr[3] << 24);
1673 addr_hi = addr[4] | (addr[5] << 8);
1674
1675 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
1676 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
1677 } else {
1678 /* generate random MAC */
1679 random_ether_addr(addr);
1680 netif_dbg(dev, ifup, dev->net,
1681 "MAC address set to random addr");
1682 }
1683 }
1684
1685 ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo);
1686 ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_);
1687
1688 ether_addr_copy(dev->net->dev_addr, addr);
1689}
1690
1691/* MDIO read and write wrappers for phylib */
1692static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx)
1693{
1694 struct lan78xx_net *dev = bus->priv;
1695 u32 val, addr;
1696 int ret;
1697
1698 ret = usb_autopm_get_interface(dev->intf);
1699 if (ret < 0)
1700 return ret;
1701
1702 mutex_lock(&dev->phy_mutex);
1703
1704 /* confirm MII not busy */
1705 ret = lan78xx_phy_wait_not_busy(dev);
1706 if (ret < 0)
1707 goto done;
1708
1709 /* set the address, index & direction (read from PHY) */
1710 addr = mii_access(phy_id, idx, MII_READ);
1711 ret = lan78xx_write_reg(dev, MII_ACC, addr);
1712
1713 ret = lan78xx_phy_wait_not_busy(dev);
1714 if (ret < 0)
1715 goto done;
1716
1717 ret = lan78xx_read_reg(dev, MII_DATA, &val);
1718
1719 ret = (int)(val & 0xFFFF);
1720
1721done:
1722 mutex_unlock(&dev->phy_mutex);
1723 usb_autopm_put_interface(dev->intf);
1724
1725 return ret;
1726}
1727
1728static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,
1729 u16 regval)
1730{
1731 struct lan78xx_net *dev = bus->priv;
1732 u32 val, addr;
1733 int ret;
1734
1735 ret = usb_autopm_get_interface(dev->intf);
1736 if (ret < 0)
1737 return ret;
1738
1739 mutex_lock(&dev->phy_mutex);
1740
1741 /* confirm MII not busy */
1742 ret = lan78xx_phy_wait_not_busy(dev);
1743 if (ret < 0)
1744 goto done;
1745
1746 val = (u32)regval;
1747 ret = lan78xx_write_reg(dev, MII_DATA, val);
1748
1749 /* set the address, index & direction (write to PHY) */
1750 addr = mii_access(phy_id, idx, MII_WRITE);
1751 ret = lan78xx_write_reg(dev, MII_ACC, addr);
1752
1753 ret = lan78xx_phy_wait_not_busy(dev);
1754 if (ret < 0)
1755 goto done;
1756
1757done:
1758 mutex_unlock(&dev->phy_mutex);
1759 usb_autopm_put_interface(dev->intf);
1760 return 0;
1761}
1762
1763static int lan78xx_mdio_init(struct lan78xx_net *dev)
1764{
1765 int ret;
1766
1767 dev->mdiobus = mdiobus_alloc();
1768 if (!dev->mdiobus) {
1769 netdev_err(dev->net, "can't allocate MDIO bus\n");
1770 return -ENOMEM;
1771 }
1772
1773 dev->mdiobus->priv = (void *)dev;
1774 dev->mdiobus->read = lan78xx_mdiobus_read;
1775 dev->mdiobus->write = lan78xx_mdiobus_write;
1776 dev->mdiobus->name = "lan78xx-mdiobus";
1777
1778 snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
1779 dev->udev->bus->busnum, dev->udev->devnum);
1780
1781 switch (dev->chipid) {
1782 case ID_REV_CHIP_ID_7800_:
1783 case ID_REV_CHIP_ID_7850_:
1784 /* set to internal PHY id */
1785 dev->mdiobus->phy_mask = ~(1 << 1);
1786 break;
1787 case ID_REV_CHIP_ID_7801_:
1788 /* scan thru PHYAD[2..0] */
1789 dev->mdiobus->phy_mask = ~(0xFF);
1790 break;
1791 }
1792
1793 ret = mdiobus_register(dev->mdiobus);
1794 if (ret) {
1795 netdev_err(dev->net, "can't register MDIO bus\n");
1796 goto exit1;
1797 }
1798
1799 netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id);
1800 return 0;
1801exit1:
1802 mdiobus_free(dev->mdiobus);
1803 return ret;
1804}
1805
1806static void lan78xx_remove_mdio(struct lan78xx_net *dev)
1807{
1808 mdiobus_unregister(dev->mdiobus);
1809 mdiobus_free(dev->mdiobus);
1810}
1811
1812static void lan78xx_link_status_change(struct net_device *net)
1813{
1814 struct phy_device *phydev = net->phydev;
1815 int ret, temp;
1816
1817 /* At forced 100 F/H mode, chip may fail to set mode correctly
1818 * when cable is switched between long(~50+m) and short one.
1819 * As workaround, set to 10 before setting to 100
1820 * at forced 100 F/H mode.
1821 */
1822 if (!phydev->autoneg && (phydev->speed == 100)) {
1823 /* disable phy interrupt */
1824 temp = phy_read(phydev, LAN88XX_INT_MASK);
1825 temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_;
1826 ret = phy_write(phydev, LAN88XX_INT_MASK, temp);
1827
1828 temp = phy_read(phydev, MII_BMCR);
1829 temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000);
1830 phy_write(phydev, MII_BMCR, temp); /* set to 10 first */
1831 temp |= BMCR_SPEED100;
1832 phy_write(phydev, MII_BMCR, temp); /* set to 100 later */
1833
1834 /* clear pending interrupt generated while workaround */
1835 temp = phy_read(phydev, LAN88XX_INT_STS);
1836
1837 /* enable phy interrupt back */
1838 temp = phy_read(phydev, LAN88XX_INT_MASK);
1839 temp |= LAN88XX_INT_MASK_MDINTPIN_EN_;
1840 ret = phy_write(phydev, LAN88XX_INT_MASK, temp);
1841 }
1842}
1843
1844static int irq_map(struct irq_domain *d, unsigned int irq,
1845 irq_hw_number_t hwirq)
1846{
1847 struct irq_domain_data *data = d->host_data;
1848
1849 irq_set_chip_data(irq, data);
1850 irq_set_chip_and_handler(irq, data->irqchip, data->irq_handler);
1851 irq_set_noprobe(irq);
1852
1853 return 0;
1854}
1855
1856static void irq_unmap(struct irq_domain *d, unsigned int irq)
1857{
1858 irq_set_chip_and_handler(irq, NULL, NULL);
1859 irq_set_chip_data(irq, NULL);
1860}
1861
1862static const struct irq_domain_ops chip_domain_ops = {
1863 .map = irq_map,
1864 .unmap = irq_unmap,
1865};
1866
1867static void lan78xx_irq_mask(struct irq_data *irqd)
1868{
1869 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
1870
1871 data->irqenable &= ~BIT(irqd_to_hwirq(irqd));
1872}
1873
1874static void lan78xx_irq_unmask(struct irq_data *irqd)
1875{
1876 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
1877
1878 data->irqenable |= BIT(irqd_to_hwirq(irqd));
1879}
1880
1881static void lan78xx_irq_bus_lock(struct irq_data *irqd)
1882{
1883 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
1884
1885 mutex_lock(&data->irq_lock);
1886}
1887
1888static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd)
1889{
1890 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
1891 struct lan78xx_net *dev =
1892 container_of(data, struct lan78xx_net, domain_data);
1893 u32 buf;
1894 int ret;
1895
1896 /* call register access here because irq_bus_lock & irq_bus_sync_unlock
1897 * are only two callbacks executed in non-atomic contex.
1898 */
1899 ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf);
1900 if (buf != data->irqenable)
1901 ret = lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable);
1902
1903 mutex_unlock(&data->irq_lock);
1904}
1905
1906static struct irq_chip lan78xx_irqchip = {
1907 .name = "lan78xx-irqs",
1908 .irq_mask = lan78xx_irq_mask,
1909 .irq_unmask = lan78xx_irq_unmask,
1910 .irq_bus_lock = lan78xx_irq_bus_lock,
1911 .irq_bus_sync_unlock = lan78xx_irq_bus_sync_unlock,
1912};
1913
1914static int lan78xx_setup_irq_domain(struct lan78xx_net *dev)
1915{
1916 struct device_node *of_node;
1917 struct irq_domain *irqdomain;
1918 unsigned int irqmap = 0;
1919 u32 buf;
1920 int ret = 0;
1921
1922 of_node = dev->udev->dev.parent->of_node;
1923
1924 mutex_init(&dev->domain_data.irq_lock);
1925
1926 lan78xx_read_reg(dev, INT_EP_CTL, &buf);
1927 dev->domain_data.irqenable = buf;
1928
1929 dev->domain_data.irqchip = &lan78xx_irqchip;
1930 dev->domain_data.irq_handler = handle_simple_irq;
1931
1932 irqdomain = irq_domain_add_simple(of_node, MAX_INT_EP, 0,
1933 &chip_domain_ops, &dev->domain_data);
1934 if (irqdomain) {
1935 /* create mapping for PHY interrupt */
1936 irqmap = irq_create_mapping(irqdomain, INT_EP_PHY);
1937 if (!irqmap) {
1938 irq_domain_remove(irqdomain);
1939
1940 irqdomain = NULL;
1941 ret = -EINVAL;
1942 }
1943 } else {
1944 ret = -EINVAL;
1945 }
1946
1947 dev->domain_data.irqdomain = irqdomain;
1948 dev->domain_data.phyirq = irqmap;
1949
1950 return ret;
1951}
1952
1953static void lan78xx_remove_irq_domain(struct lan78xx_net *dev)
1954{
1955 if (dev->domain_data.phyirq > 0) {
1956 irq_dispose_mapping(dev->domain_data.phyirq);
1957
1958 if (dev->domain_data.irqdomain)
1959 irq_domain_remove(dev->domain_data.irqdomain);
1960 }
1961 dev->domain_data.phyirq = 0;
1962 dev->domain_data.irqdomain = NULL;
1963}
1964
1965static int lan8835_fixup(struct phy_device *phydev)
1966{
1967 int buf;
1968 int ret;
1969 struct lan78xx_net *dev = netdev_priv(phydev->attached_dev);
1970
1971 /* LED2/PME_N/IRQ_N/RGMII_ID pin to IRQ_N mode */
1972 buf = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x8010);
1973 buf &= ~0x1800;
1974 buf |= 0x0800;
1975 phy_write_mmd(phydev, MDIO_MMD_PCS, 0x8010, buf);
1976
1977 /* RGMII MAC TXC Delay Enable */
1978 ret = lan78xx_write_reg(dev, MAC_RGMII_ID,
1979 MAC_RGMII_ID_TXC_DELAY_EN_);
1980
1981 /* RGMII TX DLL Tune Adjust */
1982 ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00);
1983
1984 dev->interface = PHY_INTERFACE_MODE_RGMII_TXID;
1985
1986 return 1;
1987}
1988
1989static int ksz9031rnx_fixup(struct phy_device *phydev)
1990{
1991 struct lan78xx_net *dev = netdev_priv(phydev->attached_dev);
1992
1993 /* Micrel9301RNX PHY configuration */
1994 /* RGMII Control Signal Pad Skew */
1995 phy_write_mmd(phydev, MDIO_MMD_WIS, 4, 0x0077);
1996 /* RGMII RX Data Pad Skew */
1997 phy_write_mmd(phydev, MDIO_MMD_WIS, 5, 0x7777);
1998 /* RGMII RX Clock Pad Skew */
1999 phy_write_mmd(phydev, MDIO_MMD_WIS, 8, 0x1FF);
2000
2001 dev->interface = PHY_INTERFACE_MODE_RGMII_RXID;
2002
2003 return 1;
2004}
2005
2006static int lan78xx_phy_init(struct lan78xx_net *dev)
2007{
2008 int ret;
2009 u32 mii_adv;
2010 struct phy_device *phydev;
2011
2012 phydev = phy_find_first(dev->mdiobus);
2013 if (!phydev) {
2014 netdev_err(dev->net, "no PHY found\n");
2015 return -EIO;
2016 }
2017
2018 if ((dev->chipid == ID_REV_CHIP_ID_7800_) ||
2019 (dev->chipid == ID_REV_CHIP_ID_7850_)) {
2020 phydev->is_internal = true;
2021 dev->interface = PHY_INTERFACE_MODE_GMII;
2022
2023 } else if (dev->chipid == ID_REV_CHIP_ID_7801_) {
2024 if (!phydev->drv) {
2025 netdev_err(dev->net, "no PHY driver found\n");
2026 return -EIO;
2027 }
2028
2029 dev->interface = PHY_INTERFACE_MODE_RGMII;
2030
2031 /* external PHY fixup for KSZ9031RNX */
2032 ret = phy_register_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0,
2033 ksz9031rnx_fixup);
2034 if (ret < 0) {
2035 netdev_err(dev->net, "fail to register fixup\n");
2036 return ret;
2037 }
2038 /* external PHY fixup for LAN8835 */
2039 ret = phy_register_fixup_for_uid(PHY_LAN8835, 0xfffffff0,
2040 lan8835_fixup);
2041 if (ret < 0) {
2042 netdev_err(dev->net, "fail to register fixup\n");
2043 return ret;
2044 }
2045 /* add more external PHY fixup here if needed */
2046
2047 phydev->is_internal = false;
2048 } else {
2049 netdev_err(dev->net, "unknown ID found\n");
2050 ret = -EIO;
2051 goto error;
2052 }
2053
2054 /* if phyirq is not set, use polling mode in phylib */
2055 if (dev->domain_data.phyirq > 0)
2056 phydev->irq = dev->domain_data.phyirq;
2057 else
2058 phydev->irq = 0;
2059 netdev_dbg(dev->net, "phydev->irq = %d\n", phydev->irq);
2060
2061 /* set to AUTOMDIX */
2062 phydev->mdix = ETH_TP_MDI_AUTO;
2063
2064 ret = phy_connect_direct(dev->net, phydev,
2065 lan78xx_link_status_change,
2066 dev->interface);
2067 if (ret) {
2068 netdev_err(dev->net, "can't attach PHY to %s\n",
2069 dev->mdiobus->id);
2070 return -EIO;
2071 }
2072
2073 /* MAC doesn't support 1000T Half */
2074 phydev->supported &= ~SUPPORTED_1000baseT_Half;
2075
2076 /* support both flow controls */
2077 dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
2078 phydev->advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
2079 mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
2080 phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
2081
2082 genphy_config_aneg(phydev);
2083
2084 dev->fc_autoneg = phydev->autoneg;
2085
2086 return 0;
2087
2088error:
2089 phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0);
2090 phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0);
2091
2092 return ret;
2093}
2094
2095static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size)
2096{
2097 int ret = 0;
2098 u32 buf;
2099 bool rxenabled;
2100
2101 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
2102
2103 rxenabled = ((buf & MAC_RX_RXEN_) != 0);
2104
2105 if (rxenabled) {
2106 buf &= ~MAC_RX_RXEN_;
2107 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2108 }
2109
2110 /* add 4 to size for FCS */
2111 buf &= ~MAC_RX_MAX_SIZE_MASK_;
2112 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_);
2113
2114 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2115
2116 if (rxenabled) {
2117 buf |= MAC_RX_RXEN_;
2118 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2119 }
2120
2121 return 0;
2122}
2123
2124static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q)
2125{
2126 struct sk_buff *skb;
2127 unsigned long flags;
2128 int count = 0;
2129
2130 spin_lock_irqsave(&q->lock, flags);
2131 while (!skb_queue_empty(q)) {
2132 struct skb_data *entry;
2133 struct urb *urb;
2134 int ret;
2135
2136 skb_queue_walk(q, skb) {
2137 entry = (struct skb_data *)skb->cb;
2138 if (entry->state != unlink_start)
2139 goto found;
2140 }
2141 break;
2142found:
2143 entry->state = unlink_start;
2144 urb = entry->urb;
2145
2146 /* Get reference count of the URB to avoid it to be
2147 * freed during usb_unlink_urb, which may trigger
2148 * use-after-free problem inside usb_unlink_urb since
2149 * usb_unlink_urb is always racing with .complete
2150 * handler(include defer_bh).
2151 */
2152 usb_get_urb(urb);
2153 spin_unlock_irqrestore(&q->lock, flags);
2154 /* during some PM-driven resume scenarios,
2155 * these (async) unlinks complete immediately
2156 */
2157 ret = usb_unlink_urb(urb);
2158 if (ret != -EINPROGRESS && ret != 0)
2159 netdev_dbg(dev->net, "unlink urb err, %d\n", ret);
2160 else
2161 count++;
2162 usb_put_urb(urb);
2163 spin_lock_irqsave(&q->lock, flags);
2164 }
2165 spin_unlock_irqrestore(&q->lock, flags);
2166 return count;
2167}
2168
2169static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu)
2170{
2171 struct lan78xx_net *dev = netdev_priv(netdev);
2172 int ll_mtu = new_mtu + netdev->hard_header_len;
2173 int old_hard_mtu = dev->hard_mtu;
2174 int old_rx_urb_size = dev->rx_urb_size;
2175 int ret;
2176
2177 /* no second zero-length packet read wanted after mtu-sized packets */
2178 if ((ll_mtu % dev->maxpacket) == 0)
2179 return -EDOM;
2180
2181 ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
2182
2183 netdev->mtu = new_mtu;
2184
2185 dev->hard_mtu = netdev->mtu + netdev->hard_header_len;
2186 if (dev->rx_urb_size == old_hard_mtu) {
2187 dev->rx_urb_size = dev->hard_mtu;
2188 if (dev->rx_urb_size > old_rx_urb_size) {
2189 if (netif_running(dev->net)) {
2190 unlink_urbs(dev, &dev->rxq);
2191 tasklet_schedule(&dev->bh);
2192 }
2193 }
2194 }
2195
2196 return 0;
2197}
2198
2199static int lan78xx_set_mac_addr(struct net_device *netdev, void *p)
2200{
2201 struct lan78xx_net *dev = netdev_priv(netdev);
2202 struct sockaddr *addr = p;
2203 u32 addr_lo, addr_hi;
2204 int ret;
2205
2206 if (netif_running(netdev))
2207 return -EBUSY;
2208
2209 if (!is_valid_ether_addr(addr->sa_data))
2210 return -EADDRNOTAVAIL;
2211
2212 ether_addr_copy(netdev->dev_addr, addr->sa_data);
2213
2214 addr_lo = netdev->dev_addr[0] |
2215 netdev->dev_addr[1] << 8 |
2216 netdev->dev_addr[2] << 16 |
2217 netdev->dev_addr[3] << 24;
2218 addr_hi = netdev->dev_addr[4] |
2219 netdev->dev_addr[5] << 8;
2220
2221 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
2222 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
2223
2224 return 0;
2225}
2226
2227/* Enable or disable Rx checksum offload engine */
2228static int lan78xx_set_features(struct net_device *netdev,
2229 netdev_features_t features)
2230{
2231 struct lan78xx_net *dev = netdev_priv(netdev);
2232 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2233 unsigned long flags;
2234 int ret;
2235
2236 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
2237
2238 if (features & NETIF_F_RXCSUM) {
2239 pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_;
2240 pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_;
2241 } else {
2242 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_);
2243 pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_);
2244 }
2245
2246 if (features & NETIF_F_HW_VLAN_CTAG_RX)
2247 pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_;
2248 else
2249 pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_;
2250
2251 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
2252
2253 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
2254
2255 return 0;
2256}
2257
2258static void lan78xx_deferred_vlan_write(struct work_struct *param)
2259{
2260 struct lan78xx_priv *pdata =
2261 container_of(param, struct lan78xx_priv, set_vlan);
2262 struct lan78xx_net *dev = pdata->dev;
2263
2264 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0,
2265 DP_SEL_VHF_VLAN_LEN, pdata->vlan_table);
2266}
2267
2268static int lan78xx_vlan_rx_add_vid(struct net_device *netdev,
2269 __be16 proto, u16 vid)
2270{
2271 struct lan78xx_net *dev = netdev_priv(netdev);
2272 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2273 u16 vid_bit_index;
2274 u16 vid_dword_index;
2275
2276 vid_dword_index = (vid >> 5) & 0x7F;
2277 vid_bit_index = vid & 0x1F;
2278
2279 pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index);
2280
2281 /* defer register writes to a sleepable context */
2282 schedule_work(&pdata->set_vlan);
2283
2284 return 0;
2285}
2286
2287static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev,
2288 __be16 proto, u16 vid)
2289{
2290 struct lan78xx_net *dev = netdev_priv(netdev);
2291 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2292 u16 vid_bit_index;
2293 u16 vid_dword_index;
2294
2295 vid_dword_index = (vid >> 5) & 0x7F;
2296 vid_bit_index = vid & 0x1F;
2297
2298 pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index);
2299
2300 /* defer register writes to a sleepable context */
2301 schedule_work(&pdata->set_vlan);
2302
2303 return 0;
2304}
2305
2306static void lan78xx_init_ltm(struct lan78xx_net *dev)
2307{
2308 int ret;
2309 u32 buf;
2310 u32 regs[6] = { 0 };
2311
2312 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
2313 if (buf & USB_CFG1_LTM_ENABLE_) {
2314 u8 temp[2];
2315 /* Get values from EEPROM first */
2316 if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) {
2317 if (temp[0] == 24) {
2318 ret = lan78xx_read_raw_eeprom(dev,
2319 temp[1] * 2,
2320 24,
2321 (u8 *)regs);
2322 if (ret < 0)
2323 return;
2324 }
2325 } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) {
2326 if (temp[0] == 24) {
2327 ret = lan78xx_read_raw_otp(dev,
2328 temp[1] * 2,
2329 24,
2330 (u8 *)regs);
2331 if (ret < 0)
2332 return;
2333 }
2334 }
2335 }
2336
2337 lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]);
2338 lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]);
2339 lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]);
2340 lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]);
2341 lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]);
2342 lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]);
2343}
2344
2345static int lan78xx_reset(struct lan78xx_net *dev)
2346{
2347 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2348 u32 buf;
2349 int ret = 0;
2350 unsigned long timeout;
2351 u8 sig;
2352
2353 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2354 buf |= HW_CFG_LRST_;
2355 ret = lan78xx_write_reg(dev, HW_CFG, buf);
2356
2357 timeout = jiffies + HZ;
2358 do {
2359 mdelay(1);
2360 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2361 if (time_after(jiffies, timeout)) {
2362 netdev_warn(dev->net,
2363 "timeout on completion of LiteReset");
2364 return -EIO;
2365 }
2366 } while (buf & HW_CFG_LRST_);
2367
2368 lan78xx_init_mac_address(dev);
2369
2370 /* save DEVID for later usage */
2371 ret = lan78xx_read_reg(dev, ID_REV, &buf);
2372 dev->chipid = (buf & ID_REV_CHIP_ID_MASK_) >> 16;
2373 dev->chiprev = buf & ID_REV_CHIP_REV_MASK_;
2374
2375 /* Respond to the IN token with a NAK */
2376 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
2377 buf |= USB_CFG_BIR_;
2378 ret = lan78xx_write_reg(dev, USB_CFG0, buf);
2379
2380 /* Init LTM */
2381 lan78xx_init_ltm(dev);
2382
2383 if (dev->udev->speed == USB_SPEED_SUPER) {
2384 buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE;
2385 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2386 dev->rx_qlen = 4;
2387 dev->tx_qlen = 4;
2388 } else if (dev->udev->speed == USB_SPEED_HIGH) {
2389 buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
2390 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2391 dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size;
2392 dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu;
2393 } else {
2394 buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
2395 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2396 dev->rx_qlen = 4;
2397 dev->tx_qlen = 4;
2398 }
2399
2400 ret = lan78xx_write_reg(dev, BURST_CAP, buf);
2401 ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
2402
2403 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2404 buf |= HW_CFG_MEF_;
2405 ret = lan78xx_write_reg(dev, HW_CFG, buf);
2406
2407 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
2408 buf |= USB_CFG_BCE_;
2409 ret = lan78xx_write_reg(dev, USB_CFG0, buf);
2410
2411 /* set FIFO sizes */
2412 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
2413 ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf);
2414
2415 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
2416 ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf);
2417
2418 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
2419 ret = lan78xx_write_reg(dev, FLOW, 0);
2420 ret = lan78xx_write_reg(dev, FCT_FLOW, 0);
2421
2422 /* Don't need rfe_ctl_lock during initialisation */
2423 ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
2424 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_;
2425 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
2426
2427 /* Enable or disable checksum offload engines */
2428 lan78xx_set_features(dev->net, dev->net->features);
2429
2430 lan78xx_set_multicast(dev->net);
2431
2432 /* reset PHY */
2433 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
2434 buf |= PMT_CTL_PHY_RST_;
2435 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
2436
2437 timeout = jiffies + HZ;
2438 do {
2439 mdelay(1);
2440 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
2441 if (time_after(jiffies, timeout)) {
2442 netdev_warn(dev->net, "timeout waiting for PHY Reset");
2443 return -EIO;
2444 }
2445 } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_));
2446
2447 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
2448 /* LAN7801 only has RGMII mode */
2449 if (dev->chipid == ID_REV_CHIP_ID_7801_)
2450 buf &= ~MAC_CR_GMII_EN_;
2451
2452 if (dev->chipid == ID_REV_CHIP_ID_7800_) {
2453 ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig);
2454 if (!ret && sig != EEPROM_INDICATOR) {
2455 /* Implies there is no external eeprom. Set mac speed */
2456 netdev_info(dev->net, "No External EEPROM. Setting MAC Speed\n");
2457 buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
2458 }
2459 }
2460 ret = lan78xx_write_reg(dev, MAC_CR, buf);
2461
2462 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
2463 buf |= MAC_TX_TXEN_;
2464 ret = lan78xx_write_reg(dev, MAC_TX, buf);
2465
2466 ret = lan78xx_read_reg(dev, FCT_TX_CTL, &buf);
2467 buf |= FCT_TX_CTL_EN_;
2468 ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf);
2469
2470 ret = lan78xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
2471
2472 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
2473 buf |= MAC_RX_RXEN_;
2474 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2475
2476 ret = lan78xx_read_reg(dev, FCT_RX_CTL, &buf);
2477 buf |= FCT_RX_CTL_EN_;
2478 ret = lan78xx_write_reg(dev, FCT_RX_CTL, buf);
2479
2480 return 0;
2481}
2482
2483static void lan78xx_init_stats(struct lan78xx_net *dev)
2484{
2485 u32 *p;
2486 int i;
2487
2488 /* initialize for stats update
2489 * some counters are 20bits and some are 32bits
2490 */
2491 p = (u32 *)&dev->stats.rollover_max;
2492 for (i = 0; i < (sizeof(dev->stats.rollover_max) / (sizeof(u32))); i++)
2493 p[i] = 0xFFFFF;
2494
2495 dev->stats.rollover_max.rx_unicast_byte_count = 0xFFFFFFFF;
2496 dev->stats.rollover_max.rx_broadcast_byte_count = 0xFFFFFFFF;
2497 dev->stats.rollover_max.rx_multicast_byte_count = 0xFFFFFFFF;
2498 dev->stats.rollover_max.eee_rx_lpi_transitions = 0xFFFFFFFF;
2499 dev->stats.rollover_max.eee_rx_lpi_time = 0xFFFFFFFF;
2500 dev->stats.rollover_max.tx_unicast_byte_count = 0xFFFFFFFF;
2501 dev->stats.rollover_max.tx_broadcast_byte_count = 0xFFFFFFFF;
2502 dev->stats.rollover_max.tx_multicast_byte_count = 0xFFFFFFFF;
2503 dev->stats.rollover_max.eee_tx_lpi_transitions = 0xFFFFFFFF;
2504 dev->stats.rollover_max.eee_tx_lpi_time = 0xFFFFFFFF;
2505
2506 set_bit(EVENT_STAT_UPDATE, &dev->flags);
2507}
2508
2509static int lan78xx_open(struct net_device *net)
2510{
2511 struct lan78xx_net *dev = netdev_priv(net);
2512 int ret;
2513
2514 ret = usb_autopm_get_interface(dev->intf);
2515 if (ret < 0)
2516 goto out;
2517
2518 phy_start(net->phydev);
2519
2520 netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
2521
2522 /* for Link Check */
2523 if (dev->urb_intr) {
2524 ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);
2525 if (ret < 0) {
2526 netif_err(dev, ifup, dev->net,
2527 "intr submit %d\n", ret);
2528 goto done;
2529 }
2530 }
2531
2532 lan78xx_init_stats(dev);
2533
2534 set_bit(EVENT_DEV_OPEN, &dev->flags);
2535
2536 netif_start_queue(net);
2537
2538 dev->link_on = false;
2539
2540 lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
2541done:
2542 usb_autopm_put_interface(dev->intf);
2543
2544out:
2545 return ret;
2546}
2547
2548static void lan78xx_terminate_urbs(struct lan78xx_net *dev)
2549{
2550 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup);
2551 DECLARE_WAITQUEUE(wait, current);
2552 int temp;
2553
2554 /* ensure there are no more active urbs */
2555 add_wait_queue(&unlink_wakeup, &wait);
2556 set_current_state(TASK_UNINTERRUPTIBLE);
2557 dev->wait = &unlink_wakeup;
2558 temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq);
2559
2560 /* maybe wait for deletions to finish. */
2561 while (!skb_queue_empty(&dev->rxq) &&
2562 !skb_queue_empty(&dev->txq) &&
2563 !skb_queue_empty(&dev->done)) {
2564 schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS));
2565 set_current_state(TASK_UNINTERRUPTIBLE);
2566 netif_dbg(dev, ifdown, dev->net,
2567 "waited for %d urb completions\n", temp);
2568 }
2569 set_current_state(TASK_RUNNING);
2570 dev->wait = NULL;
2571 remove_wait_queue(&unlink_wakeup, &wait);
2572}
2573
2574static int lan78xx_stop(struct net_device *net)
2575{
2576 struct lan78xx_net *dev = netdev_priv(net);
2577
2578 if (timer_pending(&dev->stat_monitor))
2579 del_timer_sync(&dev->stat_monitor);
2580
2581 if (net->phydev)
2582 phy_stop(net->phydev);
2583
2584 clear_bit(EVENT_DEV_OPEN, &dev->flags);
2585 netif_stop_queue(net);
2586
2587 netif_info(dev, ifdown, dev->net,
2588 "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n",
2589 net->stats.rx_packets, net->stats.tx_packets,
2590 net->stats.rx_errors, net->stats.tx_errors);
2591
2592 lan78xx_terminate_urbs(dev);
2593
2594 usb_kill_urb(dev->urb_intr);
2595
2596 skb_queue_purge(&dev->rxq_pause);
2597
2598 /* deferred work (task, timer, softirq) must also stop.
2599 * can't flush_scheduled_work() until we drop rtnl (later),
2600 * else workers could deadlock; so make workers a NOP.
2601 */
2602 dev->flags = 0;
2603 cancel_delayed_work_sync(&dev->wq);
2604 tasklet_kill(&dev->bh);
2605
2606 usb_autopm_put_interface(dev->intf);
2607
2608 return 0;
2609}
2610
2611static int lan78xx_linearize(struct sk_buff *skb)
2612{
2613 return skb_linearize(skb);
2614}
2615
2616static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
2617 struct sk_buff *skb, gfp_t flags)
2618{
2619 u32 tx_cmd_a, tx_cmd_b;
2620
2621 if (skb_cow_head(skb, TX_OVERHEAD)) {
2622 dev_kfree_skb_any(skb);
2623 return NULL;
2624 }
2625
2626 if (lan78xx_linearize(skb) < 0)
2627 return NULL;
2628
2629 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_;
2630
2631 if (skb->ip_summed == CHECKSUM_PARTIAL)
2632 tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_;
2633
2634 tx_cmd_b = 0;
2635 if (skb_is_gso(skb)) {
2636 u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_);
2637
2638 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_;
2639
2640 tx_cmd_a |= TX_CMD_A_LSO_;
2641 }
2642
2643 if (skb_vlan_tag_present(skb)) {
2644 tx_cmd_a |= TX_CMD_A_IVTG_;
2645 tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_;
2646 }
2647
2648 skb_push(skb, 4);
2649 cpu_to_le32s(&tx_cmd_b);
2650 memcpy(skb->data, &tx_cmd_b, 4);
2651
2652 skb_push(skb, 4);
2653 cpu_to_le32s(&tx_cmd_a);
2654 memcpy(skb->data, &tx_cmd_a, 4);
2655
2656 return skb;
2657}
2658
2659static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb,
2660 struct sk_buff_head *list, enum skb_state state)
2661{
2662 unsigned long flags;
2663 enum skb_state old_state;
2664 struct skb_data *entry = (struct skb_data *)skb->cb;
2665
2666 spin_lock_irqsave(&list->lock, flags);
2667 old_state = entry->state;
2668 entry->state = state;
2669
2670 __skb_unlink(skb, list);
2671 spin_unlock(&list->lock);
2672 spin_lock(&dev->done.lock);
2673
2674 __skb_queue_tail(&dev->done, skb);
2675 if (skb_queue_len(&dev->done) == 1)
2676 tasklet_schedule(&dev->bh);
2677 spin_unlock_irqrestore(&dev->done.lock, flags);
2678
2679 return old_state;
2680}
2681
2682static void tx_complete(struct urb *urb)
2683{
2684 struct sk_buff *skb = (struct sk_buff *)urb->context;
2685 struct skb_data *entry = (struct skb_data *)skb->cb;
2686 struct lan78xx_net *dev = entry->dev;
2687
2688 if (urb->status == 0) {
2689 dev->net->stats.tx_packets += entry->num_of_packet;
2690 dev->net->stats.tx_bytes += entry->length;
2691 } else {
2692 dev->net->stats.tx_errors++;
2693
2694 switch (urb->status) {
2695 case -EPIPE:
2696 lan78xx_defer_kevent(dev, EVENT_TX_HALT);
2697 break;
2698
2699 /* software-driven interface shutdown */
2700 case -ECONNRESET:
2701 case -ESHUTDOWN:
2702 break;
2703
2704 case -EPROTO:
2705 case -ETIME:
2706 case -EILSEQ:
2707 netif_stop_queue(dev->net);
2708 break;
2709 default:
2710 netif_dbg(dev, tx_err, dev->net,
2711 "tx err %d\n", entry->urb->status);
2712 break;
2713 }
2714 }
2715
2716 usb_autopm_put_interface_async(dev->intf);
2717
2718 defer_bh(dev, skb, &dev->txq, tx_done);
2719}
2720
2721static void lan78xx_queue_skb(struct sk_buff_head *list,
2722 struct sk_buff *newsk, enum skb_state state)
2723{
2724 struct skb_data *entry = (struct skb_data *)newsk->cb;
2725
2726 __skb_queue_tail(list, newsk);
2727 entry->state = state;
2728}
2729
2730static netdev_tx_t
2731lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net)
2732{
2733 struct lan78xx_net *dev = netdev_priv(net);
2734 struct sk_buff *skb2 = NULL;
2735
2736 if (skb) {
2737 skb_tx_timestamp(skb);
2738 skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC);
2739 }
2740
2741 if (skb2) {
2742 skb_queue_tail(&dev->txq_pend, skb2);
2743
2744 /* throttle TX patch at slower than SUPER SPEED USB */
2745 if ((dev->udev->speed < USB_SPEED_SUPER) &&
2746 (skb_queue_len(&dev->txq_pend) > 10))
2747 netif_stop_queue(net);
2748 } else {
2749 netif_dbg(dev, tx_err, dev->net,
2750 "lan78xx_tx_prep return NULL\n");
2751 dev->net->stats.tx_errors++;
2752 dev->net->stats.tx_dropped++;
2753 }
2754
2755 tasklet_schedule(&dev->bh);
2756
2757 return NETDEV_TX_OK;
2758}
2759
2760static int
2761lan78xx_get_endpoints(struct lan78xx_net *dev, struct usb_interface *intf)
2762{
2763 int tmp;
2764 struct usb_host_interface *alt = NULL;
2765 struct usb_host_endpoint *in = NULL, *out = NULL;
2766 struct usb_host_endpoint *status = NULL;
2767
2768 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
2769 unsigned ep;
2770
2771 in = NULL;
2772 out = NULL;
2773 status = NULL;
2774 alt = intf->altsetting + tmp;
2775
2776 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
2777 struct usb_host_endpoint *e;
2778 int intr = 0;
2779
2780 e = alt->endpoint + ep;
2781 switch (e->desc.bmAttributes) {
2782 case USB_ENDPOINT_XFER_INT:
2783 if (!usb_endpoint_dir_in(&e->desc))
2784 continue;
2785 intr = 1;
2786 /* FALLTHROUGH */
2787 case USB_ENDPOINT_XFER_BULK:
2788 break;
2789 default:
2790 continue;
2791 }
2792 if (usb_endpoint_dir_in(&e->desc)) {
2793 if (!intr && !in)
2794 in = e;
2795 else if (intr && !status)
2796 status = e;
2797 } else {
2798 if (!out)
2799 out = e;
2800 }
2801 }
2802 if (in && out)
2803 break;
2804 }
2805 if (!alt || !in || !out)
2806 return -EINVAL;
2807
2808 dev->pipe_in = usb_rcvbulkpipe(dev->udev,
2809 in->desc.bEndpointAddress &
2810 USB_ENDPOINT_NUMBER_MASK);
2811 dev->pipe_out = usb_sndbulkpipe(dev->udev,
2812 out->desc.bEndpointAddress &
2813 USB_ENDPOINT_NUMBER_MASK);
2814 dev->ep_intr = status;
2815
2816 return 0;
2817}
2818
2819static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf)
2820{
2821 struct lan78xx_priv *pdata = NULL;
2822 int ret;
2823 int i;
2824
2825 ret = lan78xx_get_endpoints(dev, intf);
2826
2827 dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL);
2828
2829 pdata = (struct lan78xx_priv *)(dev->data[0]);
2830 if (!pdata) {
2831 netdev_warn(dev->net, "Unable to allocate lan78xx_priv");
2832 return -ENOMEM;
2833 }
2834
2835 pdata->dev = dev;
2836
2837 spin_lock_init(&pdata->rfe_ctl_lock);
2838 mutex_init(&pdata->dataport_mutex);
2839
2840 INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write);
2841
2842 for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++)
2843 pdata->vlan_table[i] = 0;
2844
2845 INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write);
2846
2847 dev->net->features = 0;
2848
2849 if (DEFAULT_TX_CSUM_ENABLE)
2850 dev->net->features |= NETIF_F_HW_CSUM;
2851
2852 if (DEFAULT_RX_CSUM_ENABLE)
2853 dev->net->features |= NETIF_F_RXCSUM;
2854
2855 if (DEFAULT_TSO_CSUM_ENABLE)
2856 dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG;
2857
2858 dev->net->hw_features = dev->net->features;
2859
2860 ret = lan78xx_setup_irq_domain(dev);
2861 if (ret < 0) {
2862 netdev_warn(dev->net,
2863 "lan78xx_setup_irq_domain() failed : %d", ret);
2864 goto out1;
2865 }
2866
2867 dev->net->hard_header_len += TX_OVERHEAD;
2868 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
2869
2870 /* Init all registers */
2871 ret = lan78xx_reset(dev);
2872 if (ret) {
2873 netdev_warn(dev->net, "Registers INIT FAILED....");
2874 goto out2;
2875 }
2876
2877 ret = lan78xx_mdio_init(dev);
2878 if (ret) {
2879 netdev_warn(dev->net, "MDIO INIT FAILED.....");
2880 goto out2;
2881 }
2882
2883 dev->net->flags |= IFF_MULTICAST;
2884
2885 pdata->wol = WAKE_MAGIC;
2886
2887 return ret;
2888
2889out2:
2890 lan78xx_remove_irq_domain(dev);
2891
2892out1:
2893 netdev_warn(dev->net, "Bind routine FAILED");
2894 cancel_work_sync(&pdata->set_multicast);
2895 cancel_work_sync(&pdata->set_vlan);
2896 kfree(pdata);
2897 return ret;
2898}
2899
2900static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf)
2901{
2902 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2903
2904 lan78xx_remove_irq_domain(dev);
2905
2906 lan78xx_remove_mdio(dev);
2907
2908 if (pdata) {
2909 cancel_work_sync(&pdata->set_multicast);
2910 cancel_work_sync(&pdata->set_vlan);
2911 netif_dbg(dev, ifdown, dev->net, "free pdata");
2912 kfree(pdata);
2913 pdata = NULL;
2914 dev->data[0] = 0;
2915 }
2916}
2917
2918static void lan78xx_rx_csum_offload(struct lan78xx_net *dev,
2919 struct sk_buff *skb,
2920 u32 rx_cmd_a, u32 rx_cmd_b)
2921{
2922 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2923 unlikely(rx_cmd_a & RX_CMD_A_ICSM_)) {
2924 skb->ip_summed = CHECKSUM_NONE;
2925 } else {
2926 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_));
2927 skb->ip_summed = CHECKSUM_COMPLETE;
2928 }
2929}
2930
2931static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb)
2932{
2933 int status;
2934
2935 if (test_bit(EVENT_RX_PAUSED, &dev->flags)) {
2936 skb_queue_tail(&dev->rxq_pause, skb);
2937 return;
2938 }
2939
2940 dev->net->stats.rx_packets++;
2941 dev->net->stats.rx_bytes += skb->len;
2942
2943 skb->protocol = eth_type_trans(skb, dev->net);
2944
2945 netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n",
2946 skb->len + sizeof(struct ethhdr), skb->protocol);
2947 memset(skb->cb, 0, sizeof(struct skb_data));
2948
2949 if (skb_defer_rx_timestamp(skb))
2950 return;
2951
2952 status = netif_rx(skb);
2953 if (status != NET_RX_SUCCESS)
2954 netif_dbg(dev, rx_err, dev->net,
2955 "netif_rx status %d\n", status);
2956}
2957
2958static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb)
2959{
2960 if (skb->len < dev->net->hard_header_len)
2961 return 0;
2962
2963 while (skb->len > 0) {
2964 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2965 u16 rx_cmd_c;
2966 struct sk_buff *skb2;
2967 unsigned char *packet;
2968
2969 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2970 le32_to_cpus(&rx_cmd_a);
2971 skb_pull(skb, sizeof(rx_cmd_a));
2972
2973 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2974 le32_to_cpus(&rx_cmd_b);
2975 skb_pull(skb, sizeof(rx_cmd_b));
2976
2977 memcpy(&rx_cmd_c, skb->data, sizeof(rx_cmd_c));
2978 le16_to_cpus(&rx_cmd_c);
2979 skb_pull(skb, sizeof(rx_cmd_c));
2980
2981 packet = skb->data;
2982
2983 /* get the packet length */
2984 size = (rx_cmd_a & RX_CMD_A_LEN_MASK_);
2985 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2986
2987 if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) {
2988 netif_dbg(dev, rx_err, dev->net,
2989 "Error rx_cmd_a=0x%08x", rx_cmd_a);
2990 } else {
2991 /* last frame in this batch */
2992 if (skb->len == size) {
2993 lan78xx_rx_csum_offload(dev, skb,
2994 rx_cmd_a, rx_cmd_b);
2995
2996 skb_trim(skb, skb->len - 4); /* remove fcs */
2997 skb->truesize = size + sizeof(struct sk_buff);
2998
2999 return 1;
3000 }
3001
3002 skb2 = skb_clone(skb, GFP_ATOMIC);
3003 if (unlikely(!skb2)) {
3004 netdev_warn(dev->net, "Error allocating skb");
3005 return 0;
3006 }
3007
3008 skb2->len = size;
3009 skb2->data = packet;
3010 skb_set_tail_pointer(skb2, size);
3011
3012 lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b);
3013
3014 skb_trim(skb2, skb2->len - 4); /* remove fcs */
3015 skb2->truesize = size + sizeof(struct sk_buff);
3016
3017 lan78xx_skb_return(dev, skb2);
3018 }
3019
3020 skb_pull(skb, size);
3021
3022 /* padding bytes before the next frame starts */
3023 if (skb->len)
3024 skb_pull(skb, align_count);
3025 }
3026
3027 return 1;
3028}
3029
3030static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb)
3031{
3032 if (!lan78xx_rx(dev, skb)) {
3033 dev->net->stats.rx_errors++;
3034 goto done;
3035 }
3036
3037 if (skb->len) {
3038 lan78xx_skb_return(dev, skb);
3039 return;
3040 }
3041
3042 netif_dbg(dev, rx_err, dev->net, "drop\n");
3043 dev->net->stats.rx_errors++;
3044done:
3045 skb_queue_tail(&dev->done, skb);
3046}
3047
3048static void rx_complete(struct urb *urb);
3049
3050static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags)
3051{
3052 struct sk_buff *skb;
3053 struct skb_data *entry;
3054 unsigned long lockflags;
3055 size_t size = dev->rx_urb_size;
3056 int ret = 0;
3057
3058 skb = netdev_alloc_skb_ip_align(dev->net, size);
3059 if (!skb) {
3060 usb_free_urb(urb);
3061 return -ENOMEM;
3062 }
3063
3064 entry = (struct skb_data *)skb->cb;
3065 entry->urb = urb;
3066 entry->dev = dev;
3067 entry->length = 0;
3068
3069 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in,
3070 skb->data, size, rx_complete, skb);
3071
3072 spin_lock_irqsave(&dev->rxq.lock, lockflags);
3073
3074 if (netif_device_present(dev->net) &&
3075 netif_running(dev->net) &&
3076 !test_bit(EVENT_RX_HALT, &dev->flags) &&
3077 !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3078 ret = usb_submit_urb(urb, GFP_ATOMIC);
3079 switch (ret) {
3080 case 0:
3081 lan78xx_queue_skb(&dev->rxq, skb, rx_start);
3082 break;
3083 case -EPIPE:
3084 lan78xx_defer_kevent(dev, EVENT_RX_HALT);
3085 break;
3086 case -ENODEV:
3087 netif_dbg(dev, ifdown, dev->net, "device gone\n");
3088 netif_device_detach(dev->net);
3089 break;
3090 case -EHOSTUNREACH:
3091 ret = -ENOLINK;
3092 break;
3093 default:
3094 netif_dbg(dev, rx_err, dev->net,
3095 "rx submit, %d\n", ret);
3096 tasklet_schedule(&dev->bh);
3097 }
3098 } else {
3099 netif_dbg(dev, ifdown, dev->net, "rx: stopped\n");
3100 ret = -ENOLINK;
3101 }
3102 spin_unlock_irqrestore(&dev->rxq.lock, lockflags);
3103 if (ret) {
3104 dev_kfree_skb_any(skb);
3105 usb_free_urb(urb);
3106 }
3107 return ret;
3108}
3109
3110static void rx_complete(struct urb *urb)
3111{
3112 struct sk_buff *skb = (struct sk_buff *)urb->context;
3113 struct skb_data *entry = (struct skb_data *)skb->cb;
3114 struct lan78xx_net *dev = entry->dev;
3115 int urb_status = urb->status;
3116 enum skb_state state;
3117
3118 skb_put(skb, urb->actual_length);
3119 state = rx_done;
3120 entry->urb = NULL;
3121
3122 switch (urb_status) {
3123 case 0:
3124 if (skb->len < dev->net->hard_header_len) {
3125 state = rx_cleanup;
3126 dev->net->stats.rx_errors++;
3127 dev->net->stats.rx_length_errors++;
3128 netif_dbg(dev, rx_err, dev->net,
3129 "rx length %d\n", skb->len);
3130 }
3131 usb_mark_last_busy(dev->udev);
3132 break;
3133 case -EPIPE:
3134 dev->net->stats.rx_errors++;
3135 lan78xx_defer_kevent(dev, EVENT_RX_HALT);
3136 /* FALLTHROUGH */
3137 case -ECONNRESET: /* async unlink */
3138 case -ESHUTDOWN: /* hardware gone */
3139 netif_dbg(dev, ifdown, dev->net,
3140 "rx shutdown, code %d\n", urb_status);
3141 state = rx_cleanup;
3142 entry->urb = urb;
3143 urb = NULL;
3144 break;
3145 case -EPROTO:
3146 case -ETIME:
3147 case -EILSEQ:
3148 dev->net->stats.rx_errors++;
3149 state = rx_cleanup;
3150 entry->urb = urb;
3151 urb = NULL;
3152 break;
3153
3154 /* data overrun ... flush fifo? */
3155 case -EOVERFLOW:
3156 dev->net->stats.rx_over_errors++;
3157 /* FALLTHROUGH */
3158
3159 default:
3160 state = rx_cleanup;
3161 dev->net->stats.rx_errors++;
3162 netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status);
3163 break;
3164 }
3165
3166 state = defer_bh(dev, skb, &dev->rxq, state);
3167
3168 if (urb) {
3169 if (netif_running(dev->net) &&
3170 !test_bit(EVENT_RX_HALT, &dev->flags) &&
3171 state != unlink_start) {
3172 rx_submit(dev, urb, GFP_ATOMIC);
3173 return;
3174 }
3175 usb_free_urb(urb);
3176 }
3177 netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n");
3178}
3179
3180static void lan78xx_tx_bh(struct lan78xx_net *dev)
3181{
3182 int length;
3183 struct urb *urb = NULL;
3184 struct skb_data *entry;
3185 unsigned long flags;
3186 struct sk_buff_head *tqp = &dev->txq_pend;
3187 struct sk_buff *skb, *skb2;
3188 int ret;
3189 int count, pos;
3190 int skb_totallen, pkt_cnt;
3191
3192 skb_totallen = 0;
3193 pkt_cnt = 0;
3194 count = 0;
3195 length = 0;
3196 for (skb = tqp->next; pkt_cnt < tqp->qlen; skb = skb->next) {
3197 if (skb_is_gso(skb)) {
3198 if (pkt_cnt) {
3199 /* handle previous packets first */
3200 break;
3201 }
3202 count = 1;
3203 length = skb->len - TX_OVERHEAD;
3204 skb2 = skb_dequeue(tqp);
3205 goto gso_skb;
3206 }
3207
3208 if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE)
3209 break;
3210 skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32));
3211 pkt_cnt++;
3212 }
3213
3214 /* copy to a single skb */
3215 skb = alloc_skb(skb_totallen, GFP_ATOMIC);
3216 if (!skb)
3217 goto drop;
3218
3219 skb_put(skb, skb_totallen);
3220
3221 for (count = pos = 0; count < pkt_cnt; count++) {
3222 skb2 = skb_dequeue(tqp);
3223 if (skb2) {
3224 length += (skb2->len - TX_OVERHEAD);
3225 memcpy(skb->data + pos, skb2->data, skb2->len);
3226 pos += roundup(skb2->len, sizeof(u32));
3227 dev_kfree_skb(skb2);
3228 }
3229 }
3230
3231gso_skb:
3232 urb = usb_alloc_urb(0, GFP_ATOMIC);
3233 if (!urb)
3234 goto drop;
3235
3236 entry = (struct skb_data *)skb->cb;
3237 entry->urb = urb;
3238 entry->dev = dev;
3239 entry->length = length;
3240 entry->num_of_packet = count;
3241
3242 spin_lock_irqsave(&dev->txq.lock, flags);
3243 ret = usb_autopm_get_interface_async(dev->intf);
3244 if (ret < 0) {
3245 spin_unlock_irqrestore(&dev->txq.lock, flags);
3246 goto drop;
3247 }
3248
3249 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out,
3250 skb->data, skb->len, tx_complete, skb);
3251
3252 if (length % dev->maxpacket == 0) {
3253 /* send USB_ZERO_PACKET */
3254 urb->transfer_flags |= URB_ZERO_PACKET;
3255 }
3256
3257#ifdef CONFIG_PM
3258 /* if this triggers the device is still a sleep */
3259 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3260 /* transmission will be done in resume */
3261 usb_anchor_urb(urb, &dev->deferred);
3262 /* no use to process more packets */
3263 netif_stop_queue(dev->net);
3264 usb_put_urb(urb);
3265 spin_unlock_irqrestore(&dev->txq.lock, flags);
3266 netdev_dbg(dev->net, "Delaying transmission for resumption\n");
3267 return;
3268 }
3269#endif
3270
3271 ret = usb_submit_urb(urb, GFP_ATOMIC);
3272 switch (ret) {
3273 case 0:
3274 netif_trans_update(dev->net);
3275 lan78xx_queue_skb(&dev->txq, skb, tx_start);
3276 if (skb_queue_len(&dev->txq) >= dev->tx_qlen)
3277 netif_stop_queue(dev->net);
3278 break;
3279 case -EPIPE:
3280 netif_stop_queue(dev->net);
3281 lan78xx_defer_kevent(dev, EVENT_TX_HALT);
3282 usb_autopm_put_interface_async(dev->intf);
3283 break;
3284 default:
3285 usb_autopm_put_interface_async(dev->intf);
3286 netif_dbg(dev, tx_err, dev->net,
3287 "tx: submit urb err %d\n", ret);
3288 break;
3289 }
3290
3291 spin_unlock_irqrestore(&dev->txq.lock, flags);
3292
3293 if (ret) {
3294 netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret);
3295drop:
3296 dev->net->stats.tx_dropped++;
3297 if (skb)
3298 dev_kfree_skb_any(skb);
3299 usb_free_urb(urb);
3300 } else
3301 netif_dbg(dev, tx_queued, dev->net,
3302 "> tx, len %d, type 0x%x\n", length, skb->protocol);
3303}
3304
3305static void lan78xx_rx_bh(struct lan78xx_net *dev)
3306{
3307 struct urb *urb;
3308 int i;
3309
3310 if (skb_queue_len(&dev->rxq) < dev->rx_qlen) {
3311 for (i = 0; i < 10; i++) {
3312 if (skb_queue_len(&dev->rxq) >= dev->rx_qlen)
3313 break;
3314 urb = usb_alloc_urb(0, GFP_ATOMIC);
3315 if (urb)
3316 if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK)
3317 return;
3318 }
3319
3320 if (skb_queue_len(&dev->rxq) < dev->rx_qlen)
3321 tasklet_schedule(&dev->bh);
3322 }
3323 if (skb_queue_len(&dev->txq) < dev->tx_qlen)
3324 netif_wake_queue(dev->net);
3325}
3326
3327static void lan78xx_bh(unsigned long param)
3328{
3329 struct lan78xx_net *dev = (struct lan78xx_net *)param;
3330 struct sk_buff *skb;
3331 struct skb_data *entry;
3332
3333 while ((skb = skb_dequeue(&dev->done))) {
3334 entry = (struct skb_data *)(skb->cb);
3335 switch (entry->state) {
3336 case rx_done:
3337 entry->state = rx_cleanup;
3338 rx_process(dev, skb);
3339 continue;
3340 case tx_done:
3341 usb_free_urb(entry->urb);
3342 dev_kfree_skb(skb);
3343 continue;
3344 case rx_cleanup:
3345 usb_free_urb(entry->urb);
3346 dev_kfree_skb(skb);
3347 continue;
3348 default:
3349 netdev_dbg(dev->net, "skb state %d\n", entry->state);
3350 return;
3351 }
3352 }
3353
3354 if (netif_device_present(dev->net) && netif_running(dev->net)) {
3355 /* reset update timer delta */
3356 if (timer_pending(&dev->stat_monitor) && (dev->delta != 1)) {
3357 dev->delta = 1;
3358 mod_timer(&dev->stat_monitor,
3359 jiffies + STAT_UPDATE_TIMER);
3360 }
3361
3362 if (!skb_queue_empty(&dev->txq_pend))
3363 lan78xx_tx_bh(dev);
3364
3365 if (!timer_pending(&dev->delay) &&
3366 !test_bit(EVENT_RX_HALT, &dev->flags))
3367 lan78xx_rx_bh(dev);
3368 }
3369}
3370
3371static void lan78xx_delayedwork(struct work_struct *work)
3372{
3373 int status;
3374 struct lan78xx_net *dev;
3375
3376 dev = container_of(work, struct lan78xx_net, wq.work);
3377
3378 if (test_bit(EVENT_TX_HALT, &dev->flags)) {
3379 unlink_urbs(dev, &dev->txq);
3380 status = usb_autopm_get_interface(dev->intf);
3381 if (status < 0)
3382 goto fail_pipe;
3383 status = usb_clear_halt(dev->udev, dev->pipe_out);
3384 usb_autopm_put_interface(dev->intf);
3385 if (status < 0 &&
3386 status != -EPIPE &&
3387 status != -ESHUTDOWN) {
3388 if (netif_msg_tx_err(dev))
3389fail_pipe:
3390 netdev_err(dev->net,
3391 "can't clear tx halt, status %d\n",
3392 status);
3393 } else {
3394 clear_bit(EVENT_TX_HALT, &dev->flags);
3395 if (status != -ESHUTDOWN)
3396 netif_wake_queue(dev->net);
3397 }
3398 }
3399 if (test_bit(EVENT_RX_HALT, &dev->flags)) {
3400 unlink_urbs(dev, &dev->rxq);
3401 status = usb_autopm_get_interface(dev->intf);
3402 if (status < 0)
3403 goto fail_halt;
3404 status = usb_clear_halt(dev->udev, dev->pipe_in);
3405 usb_autopm_put_interface(dev->intf);
3406 if (status < 0 &&
3407 status != -EPIPE &&
3408 status != -ESHUTDOWN) {
3409 if (netif_msg_rx_err(dev))
3410fail_halt:
3411 netdev_err(dev->net,
3412 "can't clear rx halt, status %d\n",
3413 status);
3414 } else {
3415 clear_bit(EVENT_RX_HALT, &dev->flags);
3416 tasklet_schedule(&dev->bh);
3417 }
3418 }
3419
3420 if (test_bit(EVENT_LINK_RESET, &dev->flags)) {
3421 int ret = 0;
3422
3423 clear_bit(EVENT_LINK_RESET, &dev->flags);
3424 status = usb_autopm_get_interface(dev->intf);
3425 if (status < 0)
3426 goto skip_reset;
3427 if (lan78xx_link_reset(dev) < 0) {
3428 usb_autopm_put_interface(dev->intf);
3429skip_reset:
3430 netdev_info(dev->net, "link reset failed (%d)\n",
3431 ret);
3432 } else {
3433 usb_autopm_put_interface(dev->intf);
3434 }
3435 }
3436
3437 if (test_bit(EVENT_STAT_UPDATE, &dev->flags)) {
3438 lan78xx_update_stats(dev);
3439
3440 clear_bit(EVENT_STAT_UPDATE, &dev->flags);
3441
3442 mod_timer(&dev->stat_monitor,
3443 jiffies + (STAT_UPDATE_TIMER * dev->delta));
3444
3445 dev->delta = min((dev->delta * 2), 50);
3446 }
3447}
3448
3449static void intr_complete(struct urb *urb)
3450{
3451 struct lan78xx_net *dev = urb->context;
3452 int status = urb->status;
3453
3454 switch (status) {
3455 /* success */
3456 case 0:
3457 lan78xx_status(dev, urb);
3458 break;
3459
3460 /* software-driven interface shutdown */
3461 case -ENOENT: /* urb killed */
3462 case -ESHUTDOWN: /* hardware gone */
3463 netif_dbg(dev, ifdown, dev->net,
3464 "intr shutdown, code %d\n", status);
3465 return;
3466
3467 /* NOTE: not throttling like RX/TX, since this endpoint
3468 * already polls infrequently
3469 */
3470 default:
3471 netdev_dbg(dev->net, "intr status %d\n", status);
3472 break;
3473 }
3474
3475 if (!netif_running(dev->net))
3476 return;
3477
3478 memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
3479 status = usb_submit_urb(urb, GFP_ATOMIC);
3480 if (status != 0)
3481 netif_err(dev, timer, dev->net,
3482 "intr resubmit --> %d\n", status);
3483}
3484
3485static void lan78xx_disconnect(struct usb_interface *intf)
3486{
3487 struct lan78xx_net *dev;
3488 struct usb_device *udev;
3489 struct net_device *net;
3490
3491 dev = usb_get_intfdata(intf);
3492 usb_set_intfdata(intf, NULL);
3493 if (!dev)
3494 return;
3495
3496 udev = interface_to_usbdev(intf);
3497 net = dev->net;
3498
3499 phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0);
3500 phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0);
3501
3502 phy_disconnect(net->phydev);
3503
3504 unregister_netdev(net);
3505
3506 cancel_delayed_work_sync(&dev->wq);
3507
3508 usb_scuttle_anchored_urbs(&dev->deferred);
3509
3510 lan78xx_unbind(dev, intf);
3511
3512 usb_kill_urb(dev->urb_intr);
3513 usb_free_urb(dev->urb_intr);
3514
3515 free_netdev(net);
3516 usb_put_dev(udev);
3517}
3518
3519static void lan78xx_tx_timeout(struct net_device *net)
3520{
3521 struct lan78xx_net *dev = netdev_priv(net);
3522
3523 unlink_urbs(dev, &dev->txq);
3524 tasklet_schedule(&dev->bh);
3525}
3526
3527static const struct net_device_ops lan78xx_netdev_ops = {
3528 .ndo_open = lan78xx_open,
3529 .ndo_stop = lan78xx_stop,
3530 .ndo_start_xmit = lan78xx_start_xmit,
3531 .ndo_tx_timeout = lan78xx_tx_timeout,
3532 .ndo_change_mtu = lan78xx_change_mtu,
3533 .ndo_set_mac_address = lan78xx_set_mac_addr,
3534 .ndo_validate_addr = eth_validate_addr,
3535 .ndo_do_ioctl = lan78xx_ioctl,
3536 .ndo_set_rx_mode = lan78xx_set_multicast,
3537 .ndo_set_features = lan78xx_set_features,
3538 .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid,
3539 .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid,
3540};
3541
3542static void lan78xx_stat_monitor(struct timer_list *t)
3543{
3544 struct lan78xx_net *dev = from_timer(dev, t, stat_monitor);
3545
3546 lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE);
3547}
3548
3549static int lan78xx_probe(struct usb_interface *intf,
3550 const struct usb_device_id *id)
3551{
3552 struct lan78xx_net *dev;
3553 struct net_device *netdev;
3554 struct usb_device *udev;
3555 int ret;
3556 unsigned maxp;
3557 unsigned period;
3558 u8 *buf = NULL;
3559
3560 udev = interface_to_usbdev(intf);
3561 udev = usb_get_dev(udev);
3562
3563 netdev = alloc_etherdev(sizeof(struct lan78xx_net));
3564 if (!netdev) {
3565 dev_err(&intf->dev, "Error: OOM\n");
3566 ret = -ENOMEM;
3567 goto out1;
3568 }
3569
3570 /* netdev_printk() needs this */
3571 SET_NETDEV_DEV(netdev, &intf->dev);
3572
3573 dev = netdev_priv(netdev);
3574 dev->udev = udev;
3575 dev->intf = intf;
3576 dev->net = netdev;
3577 dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
3578 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
3579
3580 skb_queue_head_init(&dev->rxq);
3581 skb_queue_head_init(&dev->txq);
3582 skb_queue_head_init(&dev->done);
3583 skb_queue_head_init(&dev->rxq_pause);
3584 skb_queue_head_init(&dev->txq_pend);
3585 mutex_init(&dev->phy_mutex);
3586
3587 tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev);
3588 INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork);
3589 init_usb_anchor(&dev->deferred);
3590
3591 netdev->netdev_ops = &lan78xx_netdev_ops;
3592 netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES;
3593 netdev->ethtool_ops = &lan78xx_ethtool_ops;
3594
3595 dev->delta = 1;
3596 timer_setup(&dev->stat_monitor, lan78xx_stat_monitor, 0);
3597
3598 mutex_init(&dev->stats.access_lock);
3599
3600 ret = lan78xx_bind(dev, intf);
3601 if (ret < 0)
3602 goto out2;
3603 strcpy(netdev->name, "eth%d");
3604
3605 if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len))
3606 netdev->mtu = dev->hard_mtu - netdev->hard_header_len;
3607
3608 /* MTU range: 68 - 9000 */
3609 netdev->max_mtu = MAX_SINGLE_PACKET_SIZE;
3610
3611 dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0;
3612 dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1;
3613 dev->ep_intr = (intf->cur_altsetting)->endpoint + 2;
3614
3615 dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE);
3616 dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE);
3617
3618 dev->pipe_intr = usb_rcvintpipe(dev->udev,
3619 dev->ep_intr->desc.bEndpointAddress &
3620 USB_ENDPOINT_NUMBER_MASK);
3621 period = dev->ep_intr->desc.bInterval;
3622
3623 maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
3624 buf = kmalloc(maxp, GFP_KERNEL);
3625 if (buf) {
3626 dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL);
3627 if (!dev->urb_intr) {
3628 ret = -ENOMEM;
3629 kfree(buf);
3630 goto out3;
3631 } else {
3632 usb_fill_int_urb(dev->urb_intr, dev->udev,
3633 dev->pipe_intr, buf, maxp,
3634 intr_complete, dev, period);
3635 }
3636 }
3637
3638 dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1);
3639
3640 /* driver requires remote-wakeup capability during autosuspend. */
3641 intf->needs_remote_wakeup = 1;
3642
3643 ret = register_netdev(netdev);
3644 if (ret != 0) {
3645 netif_err(dev, probe, netdev, "couldn't register the device\n");
3646 goto out3;
3647 }
3648
3649 usb_set_intfdata(intf, dev);
3650
3651 ret = device_set_wakeup_enable(&udev->dev, true);
3652
3653 /* Default delay of 2sec has more overhead than advantage.
3654 * Set to 10sec as default.
3655 */
3656 pm_runtime_set_autosuspend_delay(&udev->dev,
3657 DEFAULT_AUTOSUSPEND_DELAY);
3658
3659 ret = lan78xx_phy_init(dev);
3660 if (ret < 0)
3661 goto out4;
3662
3663 return 0;
3664
3665out4:
3666 unregister_netdev(netdev);
3667out3:
3668 lan78xx_unbind(dev, intf);
3669out2:
3670 free_netdev(netdev);
3671out1:
3672 usb_put_dev(udev);
3673
3674 return ret;
3675}
3676
3677static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len)
3678{
3679 const u16 crc16poly = 0x8005;
3680 int i;
3681 u16 bit, crc, msb;
3682 u8 data;
3683
3684 crc = 0xFFFF;
3685 for (i = 0; i < len; i++) {
3686 data = *buf++;
3687 for (bit = 0; bit < 8; bit++) {
3688 msb = crc >> 15;
3689 crc <<= 1;
3690
3691 if (msb ^ (u16)(data & 1)) {
3692 crc ^= crc16poly;
3693 crc |= (u16)0x0001U;
3694 }
3695 data >>= 1;
3696 }
3697 }
3698
3699 return crc;
3700}
3701
3702static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol)
3703{
3704 u32 buf;
3705 int ret;
3706 int mask_index;
3707 u16 crc;
3708 u32 temp_wucsr;
3709 u32 temp_pmt_ctl;
3710 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
3711 const u8 ipv6_multicast[3] = { 0x33, 0x33 };
3712 const u8 arp_type[2] = { 0x08, 0x06 };
3713
3714 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3715 buf &= ~MAC_TX_TXEN_;
3716 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3717 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3718 buf &= ~MAC_RX_RXEN_;
3719 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3720
3721 ret = lan78xx_write_reg(dev, WUCSR, 0);
3722 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3723 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3724
3725 temp_wucsr = 0;
3726
3727 temp_pmt_ctl = 0;
3728 ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl);
3729 temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_;
3730 temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_;
3731
3732 for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++)
3733 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0);
3734
3735 mask_index = 0;
3736 if (wol & WAKE_PHY) {
3737 temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_;
3738
3739 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3740 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3741 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3742 }
3743 if (wol & WAKE_MAGIC) {
3744 temp_wucsr |= WUCSR_MPEN_;
3745
3746 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3747 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3748 temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_;
3749 }
3750 if (wol & WAKE_BCAST) {
3751 temp_wucsr |= WUCSR_BCST_EN_;
3752
3753 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3754 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3755 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3756 }
3757 if (wol & WAKE_MCAST) {
3758 temp_wucsr |= WUCSR_WAKE_EN_;
3759
3760 /* set WUF_CFG & WUF_MASK for IPv4 Multicast */
3761 crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3);
3762 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3763 WUF_CFGX_EN_ |
3764 WUF_CFGX_TYPE_MCAST_ |
3765 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3766 (crc & WUF_CFGX_CRC16_MASK_));
3767
3768 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7);
3769 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3770 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3771 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3772 mask_index++;
3773
3774 /* for IPv6 Multicast */
3775 crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2);
3776 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3777 WUF_CFGX_EN_ |
3778 WUF_CFGX_TYPE_MCAST_ |
3779 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3780 (crc & WUF_CFGX_CRC16_MASK_));
3781
3782 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3);
3783 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3784 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3785 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3786 mask_index++;
3787
3788 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3789 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3790 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3791 }
3792 if (wol & WAKE_UCAST) {
3793 temp_wucsr |= WUCSR_PFDA_EN_;
3794
3795 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3796 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3797 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3798 }
3799 if (wol & WAKE_ARP) {
3800 temp_wucsr |= WUCSR_WAKE_EN_;
3801
3802 /* set WUF_CFG & WUF_MASK
3803 * for packettype (offset 12,13) = ARP (0x0806)
3804 */
3805 crc = lan78xx_wakeframe_crc16(arp_type, 2);
3806 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3807 WUF_CFGX_EN_ |
3808 WUF_CFGX_TYPE_ALL_ |
3809 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3810 (crc & WUF_CFGX_CRC16_MASK_));
3811
3812 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000);
3813 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3814 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3815 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3816 mask_index++;
3817
3818 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3819 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3820 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3821 }
3822
3823 ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr);
3824
3825 /* when multiple WOL bits are set */
3826 if (hweight_long((unsigned long)wol) > 1) {
3827 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3828 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3829 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3830 }
3831 ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl);
3832
3833 /* clear WUPS */
3834 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3835 buf |= PMT_CTL_WUPS_MASK_;
3836 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3837
3838 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3839 buf |= MAC_RX_RXEN_;
3840 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3841
3842 return 0;
3843}
3844
3845static int lan78xx_suspend(struct usb_interface *intf, pm_message_t message)
3846{
3847 struct lan78xx_net *dev = usb_get_intfdata(intf);
3848 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
3849 u32 buf;
3850 int ret;
3851 int event;
3852
3853 event = message.event;
3854
3855 if (!dev->suspend_count++) {
3856 spin_lock_irq(&dev->txq.lock);
3857 /* don't autosuspend while transmitting */
3858 if ((skb_queue_len(&dev->txq) ||
3859 skb_queue_len(&dev->txq_pend)) &&
3860 PMSG_IS_AUTO(message)) {
3861 spin_unlock_irq(&dev->txq.lock);
3862 ret = -EBUSY;
3863 goto out;
3864 } else {
3865 set_bit(EVENT_DEV_ASLEEP, &dev->flags);
3866 spin_unlock_irq(&dev->txq.lock);
3867 }
3868
3869 /* stop TX & RX */
3870 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3871 buf &= ~MAC_TX_TXEN_;
3872 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3873 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3874 buf &= ~MAC_RX_RXEN_;
3875 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3876
3877 /* empty out the rx and queues */
3878 netif_device_detach(dev->net);
3879 lan78xx_terminate_urbs(dev);
3880 usb_kill_urb(dev->urb_intr);
3881
3882 /* reattach */
3883 netif_device_attach(dev->net);
3884 }
3885
3886 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3887 del_timer(&dev->stat_monitor);
3888
3889 if (PMSG_IS_AUTO(message)) {
3890 /* auto suspend (selective suspend) */
3891 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3892 buf &= ~MAC_TX_TXEN_;
3893 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3894 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3895 buf &= ~MAC_RX_RXEN_;
3896 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3897
3898 ret = lan78xx_write_reg(dev, WUCSR, 0);
3899 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3900 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3901
3902 /* set goodframe wakeup */
3903 ret = lan78xx_read_reg(dev, WUCSR, &buf);
3904
3905 buf |= WUCSR_RFE_WAKE_EN_;
3906 buf |= WUCSR_STORE_WAKE_;
3907
3908 ret = lan78xx_write_reg(dev, WUCSR, buf);
3909
3910 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3911
3912 buf &= ~PMT_CTL_RES_CLR_WKP_EN_;
3913 buf |= PMT_CTL_RES_CLR_WKP_STS_;
3914
3915 buf |= PMT_CTL_PHY_WAKE_EN_;
3916 buf |= PMT_CTL_WOL_EN_;
3917 buf &= ~PMT_CTL_SUS_MODE_MASK_;
3918 buf |= PMT_CTL_SUS_MODE_3_;
3919
3920 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3921
3922 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3923
3924 buf |= PMT_CTL_WUPS_MASK_;
3925
3926 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3927
3928 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3929 buf |= MAC_RX_RXEN_;
3930 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3931 } else {
3932 lan78xx_set_suspend(dev, pdata->wol);
3933 }
3934 }
3935
3936 ret = 0;
3937out:
3938 return ret;
3939}
3940
3941static int lan78xx_resume(struct usb_interface *intf)
3942{
3943 struct lan78xx_net *dev = usb_get_intfdata(intf);
3944 struct sk_buff *skb;
3945 struct urb *res;
3946 int ret;
3947 u32 buf;
3948
3949 if (!timer_pending(&dev->stat_monitor)) {
3950 dev->delta = 1;
3951 mod_timer(&dev->stat_monitor,
3952 jiffies + STAT_UPDATE_TIMER);
3953 }
3954
3955 if (!--dev->suspend_count) {
3956 /* resume interrupt URBs */
3957 if (dev->urb_intr && test_bit(EVENT_DEV_OPEN, &dev->flags))
3958 usb_submit_urb(dev->urb_intr, GFP_NOIO);
3959
3960 spin_lock_irq(&dev->txq.lock);
3961 while ((res = usb_get_from_anchor(&dev->deferred))) {
3962 skb = (struct sk_buff *)res->context;
3963 ret = usb_submit_urb(res, GFP_ATOMIC);
3964 if (ret < 0) {
3965 dev_kfree_skb_any(skb);
3966 usb_free_urb(res);
3967 usb_autopm_put_interface_async(dev->intf);
3968 } else {
3969 netif_trans_update(dev->net);
3970 lan78xx_queue_skb(&dev->txq, skb, tx_start);
3971 }
3972 }
3973
3974 clear_bit(EVENT_DEV_ASLEEP, &dev->flags);
3975 spin_unlock_irq(&dev->txq.lock);
3976
3977 if (test_bit(EVENT_DEV_OPEN, &dev->flags)) {
3978 if (!(skb_queue_len(&dev->txq) >= dev->tx_qlen))
3979 netif_start_queue(dev->net);
3980 tasklet_schedule(&dev->bh);
3981 }
3982 }
3983
3984 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3985 ret = lan78xx_write_reg(dev, WUCSR, 0);
3986 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3987
3988 ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ |
3989 WUCSR2_ARP_RCD_ |
3990 WUCSR2_IPV6_TCPSYN_RCD_ |
3991 WUCSR2_IPV4_TCPSYN_RCD_);
3992
3993 ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ |
3994 WUCSR_EEE_RX_WAKE_ |
3995 WUCSR_PFDA_FR_ |
3996 WUCSR_RFE_WAKE_FR_ |
3997 WUCSR_WUFR_ |
3998 WUCSR_MPR_ |
3999 WUCSR_BCST_FR_);
4000
4001 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
4002 buf |= MAC_TX_TXEN_;
4003 ret = lan78xx_write_reg(dev, MAC_TX, buf);
4004
4005 return 0;
4006}
4007
4008static int lan78xx_reset_resume(struct usb_interface *intf)
4009{
4010 struct lan78xx_net *dev = usb_get_intfdata(intf);
4011
4012 lan78xx_reset(dev);
4013
4014 phy_start(dev->net->phydev);
4015
4016 return lan78xx_resume(intf);
4017}
4018
4019static const struct usb_device_id products[] = {
4020 {
4021 /* LAN7800 USB Gigabit Ethernet Device */
4022 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID),
4023 },
4024 {
4025 /* LAN7850 USB Gigabit Ethernet Device */
4026 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID),
4027 },
4028 {
4029 /* LAN7801 USB Gigabit Ethernet Device */
4030 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID),
4031 },
4032 {},
4033};
4034MODULE_DEVICE_TABLE(usb, products);
4035
4036static struct usb_driver lan78xx_driver = {
4037 .name = DRIVER_NAME,
4038 .id_table = products,
4039 .probe = lan78xx_probe,
4040 .disconnect = lan78xx_disconnect,
4041 .suspend = lan78xx_suspend,
4042 .resume = lan78xx_resume,
4043 .reset_resume = lan78xx_reset_resume,
4044 .supports_autosuspend = 1,
4045 .disable_hub_initiated_lpm = 1,
4046};
4047
4048module_usb_driver(lan78xx_driver);
4049
4050MODULE_AUTHOR(DRIVER_AUTHOR);
4051MODULE_DESCRIPTION(DRIVER_DESC);
4052MODULE_LICENSE("GPL");