2 * Copyright (C) 2015 Microchip Technology
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.
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.
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/>.
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>
30 #include <linux/ipv6.h>
31 #include <linux/mdio.h>
32 #include <net/ip6_checksum.h>
33 #include <linux/interrupt.h>
34 #include <linux/irqdomain.h>
35 #include <linux/irq.h>
36 #include <linux/irqchip/chained_irq.h>
37 #include <linux/microchipphy.h>
38 #include <linux/phy.h>
41 #define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>"
42 #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices"
43 #define DRIVER_NAME "lan78xx"
44 #define DRIVER_VERSION "1.0.6"
46 #define TX_TIMEOUT_JIFFIES (5 * HZ)
47 #define THROTTLE_JIFFIES (HZ / 8)
48 #define UNLINK_TIMEOUT_MS 3
50 #define RX_MAX_QUEUE_MEMORY (60 * 1518)
52 #define SS_USB_PKT_SIZE (1024)
53 #define HS_USB_PKT_SIZE (512)
54 #define FS_USB_PKT_SIZE (64)
56 #define MAX_RX_FIFO_SIZE (12 * 1024)
57 #define MAX_TX_FIFO_SIZE (12 * 1024)
58 #define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE)
59 #define DEFAULT_BULK_IN_DELAY (0x0800)
60 #define MAX_SINGLE_PACKET_SIZE (9000)
61 #define DEFAULT_TX_CSUM_ENABLE (true)
62 #define DEFAULT_RX_CSUM_ENABLE (true)
63 #define DEFAULT_TSO_CSUM_ENABLE (true)
64 #define DEFAULT_VLAN_FILTER_ENABLE (true)
65 #define TX_OVERHEAD (8)
68 #define LAN78XX_USB_VENDOR_ID (0x0424)
69 #define LAN7800_USB_PRODUCT_ID (0x7800)
70 #define LAN7850_USB_PRODUCT_ID (0x7850)
71 #define LAN7801_USB_PRODUCT_ID (0x7801)
72 #define LAN78XX_EEPROM_MAGIC (0x78A5)
73 #define LAN78XX_OTP_MAGIC (0x78F3)
78 #define EEPROM_INDICATOR (0xA5)
79 #define EEPROM_MAC_OFFSET (0x01)
80 #define MAX_EEPROM_SIZE 512
81 #define OTP_INDICATOR_1 (0xF3)
82 #define OTP_INDICATOR_2 (0xF7)
84 #define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \
85 WAKE_MCAST | WAKE_BCAST | \
86 WAKE_ARP | WAKE_MAGIC)
88 /* USB related defines */
89 #define BULK_IN_PIPE 1
90 #define BULK_OUT_PIPE 2
92 /* default autosuspend delay (mSec)*/
93 #define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000)
95 /* statistic update interval (mSec) */
96 #define STAT_UPDATE_TIMER (1 * 1000)
98 /* defines interrupts from interrupt EP */
99 #define MAX_INT_EP (32)
100 #define INT_EP_INTEP (31)
101 #define INT_EP_OTP_WR_DONE (28)
102 #define INT_EP_EEE_TX_LPI_START (26)
103 #define INT_EP_EEE_TX_LPI_STOP (25)
104 #define INT_EP_EEE_RX_LPI (24)
105 #define INT_EP_MAC_RESET_TIMEOUT (23)
106 #define INT_EP_RDFO (22)
107 #define INT_EP_TXE (21)
108 #define INT_EP_USB_STATUS (20)
109 #define INT_EP_TX_DIS (19)
110 #define INT_EP_RX_DIS (18)
111 #define INT_EP_PHY (17)
112 #define INT_EP_DP (16)
113 #define INT_EP_MAC_ERR (15)
114 #define INT_EP_TDFU (14)
115 #define INT_EP_TDFO (13)
116 #define INT_EP_UTX (12)
117 #define INT_EP_GPIO_11 (11)
118 #define INT_EP_GPIO_10 (10)
119 #define INT_EP_GPIO_9 (9)
120 #define INT_EP_GPIO_8 (8)
121 #define INT_EP_GPIO_7 (7)
122 #define INT_EP_GPIO_6 (6)
123 #define INT_EP_GPIO_5 (5)
124 #define INT_EP_GPIO_4 (4)
125 #define INT_EP_GPIO_3 (3)
126 #define INT_EP_GPIO_2 (2)
127 #define INT_EP_GPIO_1 (1)
128 #define INT_EP_GPIO_0 (0)
130 static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = {
132 "RX Alignment Errors",
133 "Rx Fragment Errors",
135 "RX Undersize Frame Errors",
136 "RX Oversize Frame Errors",
138 "RX Unicast Byte Count",
139 "RX Broadcast Byte Count",
140 "RX Multicast Byte Count",
142 "RX Broadcast Frames",
143 "RX Multicast Frames",
146 "RX 65 - 127 Byte Frames",
147 "RX 128 - 255 Byte Frames",
148 "RX 256 - 511 Bytes Frames",
149 "RX 512 - 1023 Byte Frames",
150 "RX 1024 - 1518 Byte Frames",
151 "RX Greater 1518 Byte Frames",
152 "EEE RX LPI Transitions",
155 "TX Excess Deferral Errors",
158 "TX Single Collisions",
159 "TX Multiple Collisions",
160 "TX Excessive Collision",
161 "TX Late Collisions",
162 "TX Unicast Byte Count",
163 "TX Broadcast Byte Count",
164 "TX Multicast Byte Count",
166 "TX Broadcast Frames",
167 "TX Multicast Frames",
170 "TX 65 - 127 Byte Frames",
171 "TX 128 - 255 Byte Frames",
172 "TX 256 - 511 Bytes Frames",
173 "TX 512 - 1023 Byte Frames",
174 "TX 1024 - 1518 Byte Frames",
175 "TX Greater 1518 Byte Frames",
176 "EEE TX LPI Transitions",
180 struct lan78xx_statstage {
182 u32 rx_alignment_errors;
183 u32 rx_fragment_errors;
184 u32 rx_jabber_errors;
185 u32 rx_undersize_frame_errors;
186 u32 rx_oversize_frame_errors;
187 u32 rx_dropped_frames;
188 u32 rx_unicast_byte_count;
189 u32 rx_broadcast_byte_count;
190 u32 rx_multicast_byte_count;
191 u32 rx_unicast_frames;
192 u32 rx_broadcast_frames;
193 u32 rx_multicast_frames;
195 u32 rx_64_byte_frames;
196 u32 rx_65_127_byte_frames;
197 u32 rx_128_255_byte_frames;
198 u32 rx_256_511_bytes_frames;
199 u32 rx_512_1023_byte_frames;
200 u32 rx_1024_1518_byte_frames;
201 u32 rx_greater_1518_byte_frames;
202 u32 eee_rx_lpi_transitions;
205 u32 tx_excess_deferral_errors;
206 u32 tx_carrier_errors;
207 u32 tx_bad_byte_count;
208 u32 tx_single_collisions;
209 u32 tx_multiple_collisions;
210 u32 tx_excessive_collision;
211 u32 tx_late_collisions;
212 u32 tx_unicast_byte_count;
213 u32 tx_broadcast_byte_count;
214 u32 tx_multicast_byte_count;
215 u32 tx_unicast_frames;
216 u32 tx_broadcast_frames;
217 u32 tx_multicast_frames;
219 u32 tx_64_byte_frames;
220 u32 tx_65_127_byte_frames;
221 u32 tx_128_255_byte_frames;
222 u32 tx_256_511_bytes_frames;
223 u32 tx_512_1023_byte_frames;
224 u32 tx_1024_1518_byte_frames;
225 u32 tx_greater_1518_byte_frames;
226 u32 eee_tx_lpi_transitions;
230 struct lan78xx_statstage64 {
232 u64 rx_alignment_errors;
233 u64 rx_fragment_errors;
234 u64 rx_jabber_errors;
235 u64 rx_undersize_frame_errors;
236 u64 rx_oversize_frame_errors;
237 u64 rx_dropped_frames;
238 u64 rx_unicast_byte_count;
239 u64 rx_broadcast_byte_count;
240 u64 rx_multicast_byte_count;
241 u64 rx_unicast_frames;
242 u64 rx_broadcast_frames;
243 u64 rx_multicast_frames;
245 u64 rx_64_byte_frames;
246 u64 rx_65_127_byte_frames;
247 u64 rx_128_255_byte_frames;
248 u64 rx_256_511_bytes_frames;
249 u64 rx_512_1023_byte_frames;
250 u64 rx_1024_1518_byte_frames;
251 u64 rx_greater_1518_byte_frames;
252 u64 eee_rx_lpi_transitions;
255 u64 tx_excess_deferral_errors;
256 u64 tx_carrier_errors;
257 u64 tx_bad_byte_count;
258 u64 tx_single_collisions;
259 u64 tx_multiple_collisions;
260 u64 tx_excessive_collision;
261 u64 tx_late_collisions;
262 u64 tx_unicast_byte_count;
263 u64 tx_broadcast_byte_count;
264 u64 tx_multicast_byte_count;
265 u64 tx_unicast_frames;
266 u64 tx_broadcast_frames;
267 u64 tx_multicast_frames;
269 u64 tx_64_byte_frames;
270 u64 tx_65_127_byte_frames;
271 u64 tx_128_255_byte_frames;
272 u64 tx_256_511_bytes_frames;
273 u64 tx_512_1023_byte_frames;
274 u64 tx_1024_1518_byte_frames;
275 u64 tx_greater_1518_byte_frames;
276 u64 eee_tx_lpi_transitions;
282 struct lan78xx_priv {
283 struct lan78xx_net *dev;
285 u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicat hash table */
286 u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */
287 u32 vlan_table[DP_SEL_VHF_VLAN_LEN];
288 struct mutex dataport_mutex; /* for dataport access */
289 spinlock_t rfe_ctl_lock; /* for rfe register access */
290 struct work_struct set_multicast;
291 struct work_struct set_vlan;
305 struct skb_data { /* skb->cb is one of these */
307 struct lan78xx_net *dev;
308 enum skb_state state;
314 struct usb_ctrlrequest req;
315 struct lan78xx_net *dev;
318 #define EVENT_TX_HALT 0
319 #define EVENT_RX_HALT 1
320 #define EVENT_RX_MEMORY 2
321 #define EVENT_STS_SPLIT 3
322 #define EVENT_LINK_RESET 4
323 #define EVENT_RX_PAUSED 5
324 #define EVENT_DEV_WAKING 6
325 #define EVENT_DEV_ASLEEP 7
326 #define EVENT_DEV_OPEN 8
327 #define EVENT_STAT_UPDATE 9
330 struct mutex access_lock; /* for stats access */
331 struct lan78xx_statstage saved;
332 struct lan78xx_statstage rollover_count;
333 struct lan78xx_statstage rollover_max;
334 struct lan78xx_statstage64 curr_stat;
337 struct irq_domain_data {
338 struct irq_domain *irqdomain;
340 struct irq_chip *irqchip;
341 irq_flow_handler_t irq_handler;
343 struct mutex irq_lock; /* for irq bus access */
347 struct net_device *net;
348 struct usb_device *udev;
349 struct usb_interface *intf;
354 struct sk_buff_head rxq;
355 struct sk_buff_head txq;
356 struct sk_buff_head done;
357 struct sk_buff_head rxq_pause;
358 struct sk_buff_head txq_pend;
360 struct tasklet_struct bh;
361 struct delayed_work wq;
363 struct usb_host_endpoint *ep_blkin;
364 struct usb_host_endpoint *ep_blkout;
365 struct usb_host_endpoint *ep_intr;
369 struct urb *urb_intr;
370 struct usb_anchor deferred;
372 struct mutex phy_mutex; /* for phy access */
373 unsigned pipe_in, pipe_out, pipe_intr;
375 u32 hard_mtu; /* count any extra framing */
376 size_t rx_urb_size; /* size for rx urbs */
380 wait_queue_head_t *wait;
381 unsigned char suspend_count;
384 struct timer_list delay;
385 struct timer_list stat_monitor;
387 unsigned long data[5];
394 struct mii_bus *mdiobus;
395 phy_interface_t interface;
398 u8 fc_request_control;
401 struct statstage stats;
403 struct irq_domain_data domain_data;
406 /* define external phy id */
407 #define PHY_LAN8835 (0x0007C130)
408 #define PHY_KSZ9031RNX (0x00221620)
410 /* use ethtool to change the level for any given device */
411 static int msg_level = -1;
412 module_param(msg_level, int, 0);
413 MODULE_PARM_DESC(msg_level, "Override default message level");
415 static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
417 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL);
423 ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
424 USB_VENDOR_REQUEST_READ_REGISTER,
425 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
426 0, index, buf, 4, USB_CTRL_GET_TIMEOUT);
427 if (likely(ret >= 0)) {
431 netdev_warn(dev->net,
432 "Failed to read register index 0x%08x. ret = %d",
441 static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data)
443 u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL);
452 ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
453 USB_VENDOR_REQUEST_WRITE_REGISTER,
454 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
455 0, index, buf, 4, USB_CTRL_SET_TIMEOUT);
456 if (unlikely(ret < 0)) {
457 netdev_warn(dev->net,
458 "Failed to write register index 0x%08x. ret = %d",
467 static int lan78xx_read_stats(struct lan78xx_net *dev,
468 struct lan78xx_statstage *data)
472 struct lan78xx_statstage *stats;
476 stats = kmalloc(sizeof(*stats), GFP_KERNEL);
480 ret = usb_control_msg(dev->udev,
481 usb_rcvctrlpipe(dev->udev, 0),
482 USB_VENDOR_REQUEST_GET_STATS,
483 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
488 USB_CTRL_SET_TIMEOUT);
489 if (likely(ret >= 0)) {
492 for (i = 0; i < sizeof(*stats)/sizeof(u32); i++) {
493 le32_to_cpus(&src[i]);
497 netdev_warn(dev->net,
498 "Failed to read stat ret = 0x%x", ret);
506 #define check_counter_rollover(struct1, dev_stats, member) { \
507 if (struct1->member < dev_stats.saved.member) \
508 dev_stats.rollover_count.member++; \
511 static void lan78xx_check_stat_rollover(struct lan78xx_net *dev,
512 struct lan78xx_statstage *stats)
514 check_counter_rollover(stats, dev->stats, rx_fcs_errors);
515 check_counter_rollover(stats, dev->stats, rx_alignment_errors);
516 check_counter_rollover(stats, dev->stats, rx_fragment_errors);
517 check_counter_rollover(stats, dev->stats, rx_jabber_errors);
518 check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors);
519 check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors);
520 check_counter_rollover(stats, dev->stats, rx_dropped_frames);
521 check_counter_rollover(stats, dev->stats, rx_unicast_byte_count);
522 check_counter_rollover(stats, dev->stats, rx_broadcast_byte_count);
523 check_counter_rollover(stats, dev->stats, rx_multicast_byte_count);
524 check_counter_rollover(stats, dev->stats, rx_unicast_frames);
525 check_counter_rollover(stats, dev->stats, rx_broadcast_frames);
526 check_counter_rollover(stats, dev->stats, rx_multicast_frames);
527 check_counter_rollover(stats, dev->stats, rx_pause_frames);
528 check_counter_rollover(stats, dev->stats, rx_64_byte_frames);
529 check_counter_rollover(stats, dev->stats, rx_65_127_byte_frames);
530 check_counter_rollover(stats, dev->stats, rx_128_255_byte_frames);
531 check_counter_rollover(stats, dev->stats, rx_256_511_bytes_frames);
532 check_counter_rollover(stats, dev->stats, rx_512_1023_byte_frames);
533 check_counter_rollover(stats, dev->stats, rx_1024_1518_byte_frames);
534 check_counter_rollover(stats, dev->stats, rx_greater_1518_byte_frames);
535 check_counter_rollover(stats, dev->stats, eee_rx_lpi_transitions);
536 check_counter_rollover(stats, dev->stats, eee_rx_lpi_time);
537 check_counter_rollover(stats, dev->stats, tx_fcs_errors);
538 check_counter_rollover(stats, dev->stats, tx_excess_deferral_errors);
539 check_counter_rollover(stats, dev->stats, tx_carrier_errors);
540 check_counter_rollover(stats, dev->stats, tx_bad_byte_count);
541 check_counter_rollover(stats, dev->stats, tx_single_collisions);
542 check_counter_rollover(stats, dev->stats, tx_multiple_collisions);
543 check_counter_rollover(stats, dev->stats, tx_excessive_collision);
544 check_counter_rollover(stats, dev->stats, tx_late_collisions);
545 check_counter_rollover(stats, dev->stats, tx_unicast_byte_count);
546 check_counter_rollover(stats, dev->stats, tx_broadcast_byte_count);
547 check_counter_rollover(stats, dev->stats, tx_multicast_byte_count);
548 check_counter_rollover(stats, dev->stats, tx_unicast_frames);
549 check_counter_rollover(stats, dev->stats, tx_broadcast_frames);
550 check_counter_rollover(stats, dev->stats, tx_multicast_frames);
551 check_counter_rollover(stats, dev->stats, tx_pause_frames);
552 check_counter_rollover(stats, dev->stats, tx_64_byte_frames);
553 check_counter_rollover(stats, dev->stats, tx_65_127_byte_frames);
554 check_counter_rollover(stats, dev->stats, tx_128_255_byte_frames);
555 check_counter_rollover(stats, dev->stats, tx_256_511_bytes_frames);
556 check_counter_rollover(stats, dev->stats, tx_512_1023_byte_frames);
557 check_counter_rollover(stats, dev->stats, tx_1024_1518_byte_frames);
558 check_counter_rollover(stats, dev->stats, tx_greater_1518_byte_frames);
559 check_counter_rollover(stats, dev->stats, eee_tx_lpi_transitions);
560 check_counter_rollover(stats, dev->stats, eee_tx_lpi_time);
562 memcpy(&dev->stats.saved, stats, sizeof(struct lan78xx_statstage));
565 static void lan78xx_update_stats(struct lan78xx_net *dev)
567 u32 *p, *count, *max;
570 struct lan78xx_statstage lan78xx_stats;
572 if (usb_autopm_get_interface(dev->intf) < 0)
575 p = (u32 *)&lan78xx_stats;
576 count = (u32 *)&dev->stats.rollover_count;
577 max = (u32 *)&dev->stats.rollover_max;
578 data = (u64 *)&dev->stats.curr_stat;
580 mutex_lock(&dev->stats.access_lock);
582 if (lan78xx_read_stats(dev, &lan78xx_stats) > 0)
583 lan78xx_check_stat_rollover(dev, &lan78xx_stats);
585 for (i = 0; i < (sizeof(lan78xx_stats) / (sizeof(u32))); i++)
586 data[i] = (u64)p[i] + ((u64)count[i] * ((u64)max[i] + 1));
588 mutex_unlock(&dev->stats.access_lock);
590 usb_autopm_put_interface(dev->intf);
593 /* Loop until the read is completed with timeout called with phy_mutex held */
594 static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev)
596 unsigned long start_time = jiffies;
601 ret = lan78xx_read_reg(dev, MII_ACC, &val);
602 if (unlikely(ret < 0))
605 if (!(val & MII_ACC_MII_BUSY_))
607 } while (!time_after(jiffies, start_time + HZ));
612 static inline u32 mii_access(int id, int index, int read)
616 ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_;
617 ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_;
619 ret |= MII_ACC_MII_READ_;
621 ret |= MII_ACC_MII_WRITE_;
622 ret |= MII_ACC_MII_BUSY_;
627 static int lan78xx_wait_eeprom(struct lan78xx_net *dev)
629 unsigned long start_time = jiffies;
634 ret = lan78xx_read_reg(dev, E2P_CMD, &val);
635 if (unlikely(ret < 0))
638 if (!(val & E2P_CMD_EPC_BUSY_) ||
639 (val & E2P_CMD_EPC_TIMEOUT_))
641 usleep_range(40, 100);
642 } while (!time_after(jiffies, start_time + HZ));
644 if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) {
645 netdev_warn(dev->net, "EEPROM read operation timeout");
652 static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev)
654 unsigned long start_time = jiffies;
659 ret = lan78xx_read_reg(dev, E2P_CMD, &val);
660 if (unlikely(ret < 0))
663 if (!(val & E2P_CMD_EPC_BUSY_))
666 usleep_range(40, 100);
667 } while (!time_after(jiffies, start_time + HZ));
669 netdev_warn(dev->net, "EEPROM is busy");
673 static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset,
674 u32 length, u8 *data)
681 /* depends on chip, some EEPROM pins are muxed with LED function.
682 * disable & restore LED function to access EEPROM.
684 ret = lan78xx_read_reg(dev, HW_CFG, &val);
686 if (dev->chipid == ID_REV_CHIP_ID_7800_) {
687 val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
688 ret = lan78xx_write_reg(dev, HW_CFG, val);
691 retval = lan78xx_eeprom_confirm_not_busy(dev);
695 for (i = 0; i < length; i++) {
696 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_;
697 val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
698 ret = lan78xx_write_reg(dev, E2P_CMD, val);
699 if (unlikely(ret < 0)) {
704 retval = lan78xx_wait_eeprom(dev);
708 ret = lan78xx_read_reg(dev, E2P_DATA, &val);
709 if (unlikely(ret < 0)) {
714 data[i] = val & 0xFF;
720 if (dev->chipid == ID_REV_CHIP_ID_7800_)
721 ret = lan78xx_write_reg(dev, HW_CFG, saved);
726 static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset,
727 u32 length, u8 *data)
732 ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig);
733 if ((ret == 0) && (sig == EEPROM_INDICATOR))
734 ret = lan78xx_read_raw_eeprom(dev, offset, length, data);
741 static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset,
742 u32 length, u8 *data)
749 /* depends on chip, some EEPROM pins are muxed with LED function.
750 * disable & restore LED function to access EEPROM.
752 ret = lan78xx_read_reg(dev, HW_CFG, &val);
754 if (dev->chipid == ID_REV_CHIP_ID_7800_) {
755 val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_);
756 ret = lan78xx_write_reg(dev, HW_CFG, val);
759 retval = lan78xx_eeprom_confirm_not_busy(dev);
763 /* Issue write/erase enable command */
764 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_;
765 ret = lan78xx_write_reg(dev, E2P_CMD, val);
766 if (unlikely(ret < 0)) {
771 retval = lan78xx_wait_eeprom(dev);
775 for (i = 0; i < length; i++) {
776 /* Fill data register */
778 ret = lan78xx_write_reg(dev, E2P_DATA, val);
784 /* Send "write" command */
785 val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_;
786 val |= (offset & E2P_CMD_EPC_ADDR_MASK_);
787 ret = lan78xx_write_reg(dev, E2P_CMD, val);
793 retval = lan78xx_wait_eeprom(dev);
802 if (dev->chipid == ID_REV_CHIP_ID_7800_)
803 ret = lan78xx_write_reg(dev, HW_CFG, saved);
808 static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset,
809 u32 length, u8 *data)
814 unsigned long timeout;
816 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
818 if (buf & OTP_PWR_DN_PWRDN_N_) {
819 /* clear it and wait to be cleared */
820 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0);
822 timeout = jiffies + HZ;
825 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
826 if (time_after(jiffies, timeout)) {
827 netdev_warn(dev->net,
828 "timeout on OTP_PWR_DN");
831 } while (buf & OTP_PWR_DN_PWRDN_N_);
834 for (i = 0; i < length; i++) {
835 ret = lan78xx_write_reg(dev, OTP_ADDR1,
836 ((offset + i) >> 8) & OTP_ADDR1_15_11);
837 ret = lan78xx_write_reg(dev, OTP_ADDR2,
838 ((offset + i) & OTP_ADDR2_10_3));
840 ret = lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_);
841 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
843 timeout = jiffies + HZ;
846 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf);
847 if (time_after(jiffies, timeout)) {
848 netdev_warn(dev->net,
849 "timeout on OTP_STATUS");
852 } while (buf & OTP_STATUS_BUSY_);
854 ret = lan78xx_read_reg(dev, OTP_RD_DATA, &buf);
856 data[i] = (u8)(buf & 0xFF);
862 static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset,
863 u32 length, u8 *data)
868 unsigned long timeout;
870 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
872 if (buf & OTP_PWR_DN_PWRDN_N_) {
873 /* clear it and wait to be cleared */
874 ret = lan78xx_write_reg(dev, OTP_PWR_DN, 0);
876 timeout = jiffies + HZ;
879 ret = lan78xx_read_reg(dev, OTP_PWR_DN, &buf);
880 if (time_after(jiffies, timeout)) {
881 netdev_warn(dev->net,
882 "timeout on OTP_PWR_DN completion");
885 } while (buf & OTP_PWR_DN_PWRDN_N_);
888 /* set to BYTE program mode */
889 ret = lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_);
891 for (i = 0; i < length; i++) {
892 ret = lan78xx_write_reg(dev, OTP_ADDR1,
893 ((offset + i) >> 8) & OTP_ADDR1_15_11);
894 ret = lan78xx_write_reg(dev, OTP_ADDR2,
895 ((offset + i) & OTP_ADDR2_10_3));
896 ret = lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]);
897 ret = lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_);
898 ret = lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_);
900 timeout = jiffies + HZ;
903 ret = lan78xx_read_reg(dev, OTP_STATUS, &buf);
904 if (time_after(jiffies, timeout)) {
905 netdev_warn(dev->net,
906 "Timeout on OTP_STATUS completion");
909 } while (buf & OTP_STATUS_BUSY_);
915 static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset,
916 u32 length, u8 *data)
921 ret = lan78xx_read_raw_otp(dev, 0, 1, &sig);
924 if (sig == OTP_INDICATOR_1)
926 else if (sig == OTP_INDICATOR_2)
930 ret = lan78xx_read_raw_otp(dev, offset, length, data);
936 static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev)
940 for (i = 0; i < 100; i++) {
943 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
944 if (unlikely(ret < 0))
947 if (dp_sel & DP_SEL_DPRDY_)
950 usleep_range(40, 100);
953 netdev_warn(dev->net, "lan78xx_dataport_wait_not_busy timed out");
958 static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select,
959 u32 addr, u32 length, u32 *buf)
961 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
965 if (usb_autopm_get_interface(dev->intf) < 0)
968 mutex_lock(&pdata->dataport_mutex);
970 ret = lan78xx_dataport_wait_not_busy(dev);
974 ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel);
976 dp_sel &= ~DP_SEL_RSEL_MASK_;
977 dp_sel |= ram_select;
978 ret = lan78xx_write_reg(dev, DP_SEL, dp_sel);
980 for (i = 0; i < length; i++) {
981 ret = lan78xx_write_reg(dev, DP_ADDR, addr + i);
983 ret = lan78xx_write_reg(dev, DP_DATA, buf[i]);
985 ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_);
987 ret = lan78xx_dataport_wait_not_busy(dev);
993 mutex_unlock(&pdata->dataport_mutex);
994 usb_autopm_put_interface(dev->intf);
999 static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata,
1000 int index, u8 addr[ETH_ALEN])
1004 if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) {
1006 temp = addr[2] | (temp << 8);
1007 temp = addr[1] | (temp << 8);
1008 temp = addr[0] | (temp << 8);
1009 pdata->pfilter_table[index][1] = temp;
1011 temp = addr[4] | (temp << 8);
1012 temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_;
1013 pdata->pfilter_table[index][0] = temp;
1017 /* returns hash bit number for given MAC address */
1018 static inline u32 lan78xx_hash(char addr[ETH_ALEN])
1020 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
1023 static void lan78xx_deferred_multicast_write(struct work_struct *param)
1025 struct lan78xx_priv *pdata =
1026 container_of(param, struct lan78xx_priv, set_multicast);
1027 struct lan78xx_net *dev = pdata->dev;
1031 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
1034 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN,
1035 DP_SEL_VHF_HASH_LEN, pdata->mchash_table);
1037 for (i = 1; i < NUM_OF_MAF; i++) {
1038 ret = lan78xx_write_reg(dev, MAF_HI(i), 0);
1039 ret = lan78xx_write_reg(dev, MAF_LO(i),
1040 pdata->pfilter_table[i][1]);
1041 ret = lan78xx_write_reg(dev, MAF_HI(i),
1042 pdata->pfilter_table[i][0]);
1045 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1048 static void lan78xx_set_multicast(struct net_device *netdev)
1050 struct lan78xx_net *dev = netdev_priv(netdev);
1051 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1052 unsigned long flags;
1055 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
1057 pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ |
1058 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1060 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
1061 pdata->mchash_table[i] = 0;
1062 /* pfilter_table[0] has own HW address */
1063 for (i = 1; i < NUM_OF_MAF; i++) {
1064 pdata->pfilter_table[i][0] =
1065 pdata->pfilter_table[i][1] = 0;
1068 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_;
1070 if (dev->net->flags & IFF_PROMISC) {
1071 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled");
1072 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_;
1074 if (dev->net->flags & IFF_ALLMULTI) {
1075 netif_dbg(dev, drv, dev->net,
1076 "receive all multicast enabled");
1077 pdata->rfe_ctl |= RFE_CTL_MCAST_EN_;
1081 if (netdev_mc_count(dev->net)) {
1082 struct netdev_hw_addr *ha;
1085 netif_dbg(dev, drv, dev->net, "receive multicast hash filter");
1087 pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_;
1090 netdev_for_each_mc_addr(ha, netdev) {
1091 /* set first 32 into Perfect Filter */
1093 lan78xx_set_addr_filter(pdata, i, ha->addr);
1095 u32 bitnum = lan78xx_hash(ha->addr);
1097 pdata->mchash_table[bitnum / 32] |=
1098 (1 << (bitnum % 32));
1099 pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_;
1105 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
1107 /* defer register writes to a sleepable context */
1108 schedule_work(&pdata->set_multicast);
1111 static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex,
1112 u16 lcladv, u16 rmtadv)
1114 u32 flow = 0, fct_flow = 0;
1118 if (dev->fc_autoneg)
1119 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
1121 cap = dev->fc_request_control;
1123 if (cap & FLOW_CTRL_TX)
1124 flow |= (FLOW_CR_TX_FCEN_ | 0xFFFF);
1126 if (cap & FLOW_CTRL_RX)
1127 flow |= FLOW_CR_RX_FCEN_;
1129 if (dev->udev->speed == USB_SPEED_SUPER)
1131 else if (dev->udev->speed == USB_SPEED_HIGH)
1134 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s",
1135 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
1136 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
1138 ret = lan78xx_write_reg(dev, FCT_FLOW, fct_flow);
1140 /* threshold value should be set before enabling flow */
1141 ret = lan78xx_write_reg(dev, FLOW, flow);
1146 static int lan78xx_link_reset(struct lan78xx_net *dev)
1148 struct phy_device *phydev = dev->net->phydev;
1149 struct ethtool_link_ksettings ecmd;
1150 int ladv, radv, ret;
1153 /* clear LAN78xx interrupt status */
1154 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_);
1155 if (unlikely(ret < 0))
1158 phy_read_status(phydev);
1160 if (!phydev->link && dev->link_on) {
1161 dev->link_on = false;
1164 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1165 if (unlikely(ret < 0))
1168 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1169 if (unlikely(ret < 0))
1172 del_timer(&dev->stat_monitor);
1173 } else if (phydev->link && !dev->link_on) {
1174 dev->link_on = true;
1176 phy_ethtool_ksettings_get(phydev, &ecmd);
1178 if (dev->udev->speed == USB_SPEED_SUPER) {
1179 if (ecmd.base.speed == 1000) {
1181 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1182 buf &= ~USB_CFG1_DEV_U2_INIT_EN_;
1183 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1185 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1186 buf |= USB_CFG1_DEV_U1_INIT_EN_;
1187 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1189 /* enable U1 & U2 */
1190 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
1191 buf |= USB_CFG1_DEV_U2_INIT_EN_;
1192 buf |= USB_CFG1_DEV_U1_INIT_EN_;
1193 ret = lan78xx_write_reg(dev, USB_CFG1, buf);
1197 ladv = phy_read(phydev, MII_ADVERTISE);
1201 radv = phy_read(phydev, MII_LPA);
1205 netif_dbg(dev, link, dev->net,
1206 "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x",
1207 ecmd.base.speed, ecmd.base.duplex, ladv, radv);
1209 ret = lan78xx_update_flowcontrol(dev, ecmd.base.duplex, ladv,
1212 if (!timer_pending(&dev->stat_monitor)) {
1214 mod_timer(&dev->stat_monitor,
1215 jiffies + STAT_UPDATE_TIMER);
1222 /* some work can't be done in tasklets, so we use keventd
1224 * NOTE: annoying asymmetry: if it's active, schedule_work() fails,
1225 * but tasklet_schedule() doesn't. hope the failure is rare.
1227 static void lan78xx_defer_kevent(struct lan78xx_net *dev, int work)
1229 set_bit(work, &dev->flags);
1230 if (!schedule_delayed_work(&dev->wq, 0))
1231 netdev_err(dev->net, "kevent %d may have been dropped\n", work);
1234 static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb)
1238 if (urb->actual_length != 4) {
1239 netdev_warn(dev->net,
1240 "unexpected urb length %d", urb->actual_length);
1244 memcpy(&intdata, urb->transfer_buffer, 4);
1245 le32_to_cpus(&intdata);
1247 if (intdata & INT_ENP_PHY_INT) {
1248 netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata);
1249 lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
1251 if (dev->domain_data.phyirq > 0)
1252 generic_handle_irq(dev->domain_data.phyirq);
1254 netdev_warn(dev->net,
1255 "unexpected interrupt: 0x%08x\n", intdata);
1258 static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev)
1260 return MAX_EEPROM_SIZE;
1263 static int lan78xx_ethtool_get_eeprom(struct net_device *netdev,
1264 struct ethtool_eeprom *ee, u8 *data)
1266 struct lan78xx_net *dev = netdev_priv(netdev);
1268 ee->magic = LAN78XX_EEPROM_MAGIC;
1270 return lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data);
1273 static int lan78xx_ethtool_set_eeprom(struct net_device *netdev,
1274 struct ethtool_eeprom *ee, u8 *data)
1276 struct lan78xx_net *dev = netdev_priv(netdev);
1278 /* Allow entire eeprom update only */
1279 if ((ee->magic == LAN78XX_EEPROM_MAGIC) &&
1280 (ee->offset == 0) &&
1282 (data[0] == EEPROM_INDICATOR))
1283 return lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data);
1284 else if ((ee->magic == LAN78XX_OTP_MAGIC) &&
1285 (ee->offset == 0) &&
1287 (data[0] == OTP_INDICATOR_1))
1288 return lan78xx_write_raw_otp(dev, ee->offset, ee->len, data);
1293 static void lan78xx_get_strings(struct net_device *netdev, u32 stringset,
1296 if (stringset == ETH_SS_STATS)
1297 memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings));
1300 static int lan78xx_get_sset_count(struct net_device *netdev, int sset)
1302 if (sset == ETH_SS_STATS)
1303 return ARRAY_SIZE(lan78xx_gstrings);
1308 static void lan78xx_get_stats(struct net_device *netdev,
1309 struct ethtool_stats *stats, u64 *data)
1311 struct lan78xx_net *dev = netdev_priv(netdev);
1313 lan78xx_update_stats(dev);
1315 mutex_lock(&dev->stats.access_lock);
1316 memcpy(data, &dev->stats.curr_stat, sizeof(dev->stats.curr_stat));
1317 mutex_unlock(&dev->stats.access_lock);
1320 static void lan78xx_get_wol(struct net_device *netdev,
1321 struct ethtool_wolinfo *wol)
1323 struct lan78xx_net *dev = netdev_priv(netdev);
1326 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1328 if (usb_autopm_get_interface(dev->intf) < 0)
1331 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
1332 if (unlikely(ret < 0)) {
1336 if (buf & USB_CFG_RMT_WKP_) {
1337 wol->supported = WAKE_ALL;
1338 wol->wolopts = pdata->wol;
1345 usb_autopm_put_interface(dev->intf);
1348 static int lan78xx_set_wol(struct net_device *netdev,
1349 struct ethtool_wolinfo *wol)
1351 struct lan78xx_net *dev = netdev_priv(netdev);
1352 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
1355 ret = usb_autopm_get_interface(dev->intf);
1360 if (wol->wolopts & WAKE_UCAST)
1361 pdata->wol |= WAKE_UCAST;
1362 if (wol->wolopts & WAKE_MCAST)
1363 pdata->wol |= WAKE_MCAST;
1364 if (wol->wolopts & WAKE_BCAST)
1365 pdata->wol |= WAKE_BCAST;
1366 if (wol->wolopts & WAKE_MAGIC)
1367 pdata->wol |= WAKE_MAGIC;
1368 if (wol->wolopts & WAKE_PHY)
1369 pdata->wol |= WAKE_PHY;
1370 if (wol->wolopts & WAKE_ARP)
1371 pdata->wol |= WAKE_ARP;
1373 device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);
1375 phy_ethtool_set_wol(netdev->phydev, wol);
1377 usb_autopm_put_interface(dev->intf);
1382 static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata)
1384 struct lan78xx_net *dev = netdev_priv(net);
1385 struct phy_device *phydev = net->phydev;
1389 ret = usb_autopm_get_interface(dev->intf);
1393 ret = phy_ethtool_get_eee(phydev, edata);
1397 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1398 if (buf & MAC_CR_EEE_EN_) {
1399 edata->eee_enabled = true;
1400 edata->eee_active = !!(edata->advertised &
1401 edata->lp_advertised);
1402 edata->tx_lpi_enabled = true;
1403 /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */
1404 ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf);
1405 edata->tx_lpi_timer = buf;
1407 edata->eee_enabled = false;
1408 edata->eee_active = false;
1409 edata->tx_lpi_enabled = false;
1410 edata->tx_lpi_timer = 0;
1415 usb_autopm_put_interface(dev->intf);
1420 static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata)
1422 struct lan78xx_net *dev = netdev_priv(net);
1426 ret = usb_autopm_get_interface(dev->intf);
1430 if (edata->eee_enabled) {
1431 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1432 buf |= MAC_CR_EEE_EN_;
1433 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1435 phy_ethtool_set_eee(net->phydev, edata);
1437 buf = (u32)edata->tx_lpi_timer;
1438 ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf);
1440 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
1441 buf &= ~MAC_CR_EEE_EN_;
1442 ret = lan78xx_write_reg(dev, MAC_CR, buf);
1445 usb_autopm_put_interface(dev->intf);
1450 static u32 lan78xx_get_link(struct net_device *net)
1452 phy_read_status(net->phydev);
1454 return net->phydev->link;
1457 static void lan78xx_get_drvinfo(struct net_device *net,
1458 struct ethtool_drvinfo *info)
1460 struct lan78xx_net *dev = netdev_priv(net);
1462 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
1463 strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
1464 usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));
1467 static u32 lan78xx_get_msglevel(struct net_device *net)
1469 struct lan78xx_net *dev = netdev_priv(net);
1471 return dev->msg_enable;
1474 static void lan78xx_set_msglevel(struct net_device *net, u32 level)
1476 struct lan78xx_net *dev = netdev_priv(net);
1478 dev->msg_enable = level;
1481 static int lan78xx_get_link_ksettings(struct net_device *net,
1482 struct ethtool_link_ksettings *cmd)
1484 struct lan78xx_net *dev = netdev_priv(net);
1485 struct phy_device *phydev = net->phydev;
1488 ret = usb_autopm_get_interface(dev->intf);
1492 ret = phy_ethtool_ksettings_get(phydev, cmd);
1494 usb_autopm_put_interface(dev->intf);
1499 static int lan78xx_set_link_ksettings(struct net_device *net,
1500 const struct ethtool_link_ksettings *cmd)
1502 struct lan78xx_net *dev = netdev_priv(net);
1503 struct phy_device *phydev = net->phydev;
1507 ret = usb_autopm_get_interface(dev->intf);
1511 /* change speed & duplex */
1512 ret = phy_ethtool_ksettings_set(phydev, cmd);
1514 if (!cmd->base.autoneg) {
1515 /* force link down */
1516 temp = phy_read(phydev, MII_BMCR);
1517 phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK);
1519 phy_write(phydev, MII_BMCR, temp);
1522 usb_autopm_put_interface(dev->intf);
1527 static void lan78xx_get_pause(struct net_device *net,
1528 struct ethtool_pauseparam *pause)
1530 struct lan78xx_net *dev = netdev_priv(net);
1531 struct phy_device *phydev = net->phydev;
1532 struct ethtool_link_ksettings ecmd;
1534 phy_ethtool_ksettings_get(phydev, &ecmd);
1536 pause->autoneg = dev->fc_autoneg;
1538 if (dev->fc_request_control & FLOW_CTRL_TX)
1539 pause->tx_pause = 1;
1541 if (dev->fc_request_control & FLOW_CTRL_RX)
1542 pause->rx_pause = 1;
1545 static int lan78xx_set_pause(struct net_device *net,
1546 struct ethtool_pauseparam *pause)
1548 struct lan78xx_net *dev = netdev_priv(net);
1549 struct phy_device *phydev = net->phydev;
1550 struct ethtool_link_ksettings ecmd;
1553 phy_ethtool_ksettings_get(phydev, &ecmd);
1555 if (pause->autoneg && !ecmd.base.autoneg) {
1560 dev->fc_request_control = 0;
1561 if (pause->rx_pause)
1562 dev->fc_request_control |= FLOW_CTRL_RX;
1564 if (pause->tx_pause)
1565 dev->fc_request_control |= FLOW_CTRL_TX;
1567 if (ecmd.base.autoneg) {
1571 ethtool_convert_link_mode_to_legacy_u32(
1572 &advertising, ecmd.link_modes.advertising);
1574 advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
1575 mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
1576 advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
1578 ethtool_convert_legacy_u32_to_link_mode(
1579 ecmd.link_modes.advertising, advertising);
1581 phy_ethtool_ksettings_set(phydev, &ecmd);
1584 dev->fc_autoneg = pause->autoneg;
1591 static const struct ethtool_ops lan78xx_ethtool_ops = {
1592 .get_link = lan78xx_get_link,
1593 .nway_reset = phy_ethtool_nway_reset,
1594 .get_drvinfo = lan78xx_get_drvinfo,
1595 .get_msglevel = lan78xx_get_msglevel,
1596 .set_msglevel = lan78xx_set_msglevel,
1597 .get_eeprom_len = lan78xx_ethtool_get_eeprom_len,
1598 .get_eeprom = lan78xx_ethtool_get_eeprom,
1599 .set_eeprom = lan78xx_ethtool_set_eeprom,
1600 .get_ethtool_stats = lan78xx_get_stats,
1601 .get_sset_count = lan78xx_get_sset_count,
1602 .get_strings = lan78xx_get_strings,
1603 .get_wol = lan78xx_get_wol,
1604 .set_wol = lan78xx_set_wol,
1605 .get_eee = lan78xx_get_eee,
1606 .set_eee = lan78xx_set_eee,
1607 .get_pauseparam = lan78xx_get_pause,
1608 .set_pauseparam = lan78xx_set_pause,
1609 .get_link_ksettings = lan78xx_get_link_ksettings,
1610 .set_link_ksettings = lan78xx_set_link_ksettings,
1613 static int lan78xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
1615 if (!netif_running(netdev))
1618 return phy_mii_ioctl(netdev->phydev, rq, cmd);
1621 static void lan78xx_init_mac_address(struct lan78xx_net *dev)
1623 u32 addr_lo, addr_hi;
1627 ret = lan78xx_read_reg(dev, RX_ADDRL, &addr_lo);
1628 ret = lan78xx_read_reg(dev, RX_ADDRH, &addr_hi);
1630 addr[0] = addr_lo & 0xFF;
1631 addr[1] = (addr_lo >> 8) & 0xFF;
1632 addr[2] = (addr_lo >> 16) & 0xFF;
1633 addr[3] = (addr_lo >> 24) & 0xFF;
1634 addr[4] = addr_hi & 0xFF;
1635 addr[5] = (addr_hi >> 8) & 0xFF;
1637 if (!is_valid_ether_addr(addr)) {
1638 /* reading mac address from EEPROM or OTP */
1639 if ((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
1641 (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
1643 if (is_valid_ether_addr(addr)) {
1644 /* eeprom values are valid so use them */
1645 netif_dbg(dev, ifup, dev->net,
1646 "MAC address read from EEPROM");
1648 /* generate random MAC */
1649 random_ether_addr(addr);
1650 netif_dbg(dev, ifup, dev->net,
1651 "MAC address set to random addr");
1654 addr_lo = addr[0] | (addr[1] << 8) |
1655 (addr[2] << 16) | (addr[3] << 24);
1656 addr_hi = addr[4] | (addr[5] << 8);
1658 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
1659 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
1661 /* generate random MAC */
1662 random_ether_addr(addr);
1663 netif_dbg(dev, ifup, dev->net,
1664 "MAC address set to random addr");
1668 ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo);
1669 ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_);
1671 ether_addr_copy(dev->net->dev_addr, addr);
1674 /* MDIO read and write wrappers for phylib */
1675 static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx)
1677 struct lan78xx_net *dev = bus->priv;
1681 ret = usb_autopm_get_interface(dev->intf);
1685 mutex_lock(&dev->phy_mutex);
1687 /* confirm MII not busy */
1688 ret = lan78xx_phy_wait_not_busy(dev);
1692 /* set the address, index & direction (read from PHY) */
1693 addr = mii_access(phy_id, idx, MII_READ);
1694 ret = lan78xx_write_reg(dev, MII_ACC, addr);
1696 ret = lan78xx_phy_wait_not_busy(dev);
1700 ret = lan78xx_read_reg(dev, MII_DATA, &val);
1702 ret = (int)(val & 0xFFFF);
1705 mutex_unlock(&dev->phy_mutex);
1706 usb_autopm_put_interface(dev->intf);
1711 static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,
1714 struct lan78xx_net *dev = bus->priv;
1718 ret = usb_autopm_get_interface(dev->intf);
1722 mutex_lock(&dev->phy_mutex);
1724 /* confirm MII not busy */
1725 ret = lan78xx_phy_wait_not_busy(dev);
1730 ret = lan78xx_write_reg(dev, MII_DATA, val);
1732 /* set the address, index & direction (write to PHY) */
1733 addr = mii_access(phy_id, idx, MII_WRITE);
1734 ret = lan78xx_write_reg(dev, MII_ACC, addr);
1736 ret = lan78xx_phy_wait_not_busy(dev);
1741 mutex_unlock(&dev->phy_mutex);
1742 usb_autopm_put_interface(dev->intf);
1746 static int lan78xx_mdio_init(struct lan78xx_net *dev)
1750 dev->mdiobus = mdiobus_alloc();
1751 if (!dev->mdiobus) {
1752 netdev_err(dev->net, "can't allocate MDIO bus\n");
1756 dev->mdiobus->priv = (void *)dev;
1757 dev->mdiobus->read = lan78xx_mdiobus_read;
1758 dev->mdiobus->write = lan78xx_mdiobus_write;
1759 dev->mdiobus->name = "lan78xx-mdiobus";
1761 snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d",
1762 dev->udev->bus->busnum, dev->udev->devnum);
1764 switch (dev->chipid) {
1765 case ID_REV_CHIP_ID_7800_:
1766 case ID_REV_CHIP_ID_7850_:
1767 /* set to internal PHY id */
1768 dev->mdiobus->phy_mask = ~(1 << 1);
1770 case ID_REV_CHIP_ID_7801_:
1771 /* scan thru PHYAD[2..0] */
1772 dev->mdiobus->phy_mask = ~(0xFF);
1776 ret = mdiobus_register(dev->mdiobus);
1778 netdev_err(dev->net, "can't register MDIO bus\n");
1782 netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id);
1785 mdiobus_free(dev->mdiobus);
1789 static void lan78xx_remove_mdio(struct lan78xx_net *dev)
1791 mdiobus_unregister(dev->mdiobus);
1792 mdiobus_free(dev->mdiobus);
1795 static void lan78xx_link_status_change(struct net_device *net)
1797 struct phy_device *phydev = net->phydev;
1800 /* At forced 100 F/H mode, chip may fail to set mode correctly
1801 * when cable is switched between long(~50+m) and short one.
1802 * As workaround, set to 10 before setting to 100
1803 * at forced 100 F/H mode.
1805 if (!phydev->autoneg && (phydev->speed == 100)) {
1806 /* disable phy interrupt */
1807 temp = phy_read(phydev, LAN88XX_INT_MASK);
1808 temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_;
1809 ret = phy_write(phydev, LAN88XX_INT_MASK, temp);
1811 temp = phy_read(phydev, MII_BMCR);
1812 temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000);
1813 phy_write(phydev, MII_BMCR, temp); /* set to 10 first */
1814 temp |= BMCR_SPEED100;
1815 phy_write(phydev, MII_BMCR, temp); /* set to 100 later */
1817 /* clear pending interrupt generated while workaround */
1818 temp = phy_read(phydev, LAN88XX_INT_STS);
1820 /* enable phy interrupt back */
1821 temp = phy_read(phydev, LAN88XX_INT_MASK);
1822 temp |= LAN88XX_INT_MASK_MDINTPIN_EN_;
1823 ret = phy_write(phydev, LAN88XX_INT_MASK, temp);
1827 static int irq_map(struct irq_domain *d, unsigned int irq,
1828 irq_hw_number_t hwirq)
1830 struct irq_domain_data *data = d->host_data;
1832 irq_set_chip_data(irq, data);
1833 irq_set_chip_and_handler(irq, data->irqchip, data->irq_handler);
1834 irq_set_noprobe(irq);
1839 static void irq_unmap(struct irq_domain *d, unsigned int irq)
1841 irq_set_chip_and_handler(irq, NULL, NULL);
1842 irq_set_chip_data(irq, NULL);
1845 static const struct irq_domain_ops chip_domain_ops = {
1850 static void lan78xx_irq_mask(struct irq_data *irqd)
1852 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
1854 data->irqenable &= ~BIT(irqd_to_hwirq(irqd));
1857 static void lan78xx_irq_unmask(struct irq_data *irqd)
1859 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
1861 data->irqenable |= BIT(irqd_to_hwirq(irqd));
1864 static void lan78xx_irq_bus_lock(struct irq_data *irqd)
1866 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
1868 mutex_lock(&data->irq_lock);
1871 static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd)
1873 struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd);
1874 struct lan78xx_net *dev =
1875 container_of(data, struct lan78xx_net, domain_data);
1879 /* call register access here because irq_bus_lock & irq_bus_sync_unlock
1880 * are only two callbacks executed in non-atomic contex.
1882 ret = lan78xx_read_reg(dev, INT_EP_CTL, &buf);
1883 if (buf != data->irqenable)
1884 ret = lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable);
1886 mutex_unlock(&data->irq_lock);
1889 static struct irq_chip lan78xx_irqchip = {
1890 .name = "lan78xx-irqs",
1891 .irq_mask = lan78xx_irq_mask,
1892 .irq_unmask = lan78xx_irq_unmask,
1893 .irq_bus_lock = lan78xx_irq_bus_lock,
1894 .irq_bus_sync_unlock = lan78xx_irq_bus_sync_unlock,
1897 static int lan78xx_setup_irq_domain(struct lan78xx_net *dev)
1899 struct device_node *of_node;
1900 struct irq_domain *irqdomain;
1901 unsigned int irqmap = 0;
1905 of_node = dev->udev->dev.parent->of_node;
1907 mutex_init(&dev->domain_data.irq_lock);
1909 lan78xx_read_reg(dev, INT_EP_CTL, &buf);
1910 dev->domain_data.irqenable = buf;
1912 dev->domain_data.irqchip = &lan78xx_irqchip;
1913 dev->domain_data.irq_handler = handle_simple_irq;
1915 irqdomain = irq_domain_add_simple(of_node, MAX_INT_EP, 0,
1916 &chip_domain_ops, &dev->domain_data);
1918 /* create mapping for PHY interrupt */
1919 irqmap = irq_create_mapping(irqdomain, INT_EP_PHY);
1921 irq_domain_remove(irqdomain);
1930 dev->domain_data.irqdomain = irqdomain;
1931 dev->domain_data.phyirq = irqmap;
1936 static void lan78xx_remove_irq_domain(struct lan78xx_net *dev)
1938 if (dev->domain_data.phyirq > 0) {
1939 irq_dispose_mapping(dev->domain_data.phyirq);
1941 if (dev->domain_data.irqdomain)
1942 irq_domain_remove(dev->domain_data.irqdomain);
1944 dev->domain_data.phyirq = 0;
1945 dev->domain_data.irqdomain = NULL;
1948 static int lan8835_fixup(struct phy_device *phydev)
1952 struct lan78xx_net *dev = netdev_priv(phydev->attached_dev);
1954 /* LED2/PME_N/IRQ_N/RGMII_ID pin to IRQ_N mode */
1955 buf = phy_read_mmd_indirect(phydev, 0x8010, 3);
1958 phy_write_mmd_indirect(phydev, 0x8010, 3, buf);
1960 /* RGMII MAC TXC Delay Enable */
1961 ret = lan78xx_write_reg(dev, MAC_RGMII_ID,
1962 MAC_RGMII_ID_TXC_DELAY_EN_);
1964 /* RGMII TX DLL Tune Adjust */
1965 ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00);
1967 dev->interface = PHY_INTERFACE_MODE_RGMII_TXID;
1972 static int ksz9031rnx_fixup(struct phy_device *phydev)
1974 struct lan78xx_net *dev = netdev_priv(phydev->attached_dev);
1976 /* Micrel9301RNX PHY configuration */
1977 /* RGMII Control Signal Pad Skew */
1978 phy_write_mmd_indirect(phydev, 4, 2, 0x0077);
1979 /* RGMII RX Data Pad Skew */
1980 phy_write_mmd_indirect(phydev, 5, 2, 0x7777);
1981 /* RGMII RX Clock Pad Skew */
1982 phy_write_mmd_indirect(phydev, 8, 2, 0x1FF);
1984 dev->interface = PHY_INTERFACE_MODE_RGMII_RXID;
1989 static int lan78xx_phy_init(struct lan78xx_net *dev)
1993 struct phy_device *phydev = dev->net->phydev;
1995 phydev = phy_find_first(dev->mdiobus);
1997 netdev_err(dev->net, "no PHY found\n");
2001 if ((dev->chipid == ID_REV_CHIP_ID_7800_) ||
2002 (dev->chipid == ID_REV_CHIP_ID_7850_)) {
2003 phydev->is_internal = true;
2004 dev->interface = PHY_INTERFACE_MODE_GMII;
2006 } else if (dev->chipid == ID_REV_CHIP_ID_7801_) {
2008 netdev_err(dev->net, "no PHY driver found\n");
2012 dev->interface = PHY_INTERFACE_MODE_RGMII;
2014 /* external PHY fixup for KSZ9031RNX */
2015 ret = phy_register_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0,
2018 netdev_err(dev->net, "fail to register fixup\n");
2021 /* external PHY fixup for LAN8835 */
2022 ret = phy_register_fixup_for_uid(PHY_LAN8835, 0xfffffff0,
2025 netdev_err(dev->net, "fail to register fixup\n");
2028 /* add more external PHY fixup here if needed */
2030 phydev->is_internal = false;
2032 netdev_err(dev->net, "unknown ID found\n");
2037 /* if phyirq is not set, use polling mode in phylib */
2038 if (dev->domain_data.phyirq > 0)
2039 phydev->irq = dev->domain_data.phyirq;
2042 netdev_dbg(dev->net, "phydev->irq = %d\n", phydev->irq);
2044 /* set to AUTOMDIX */
2045 phydev->mdix = ETH_TP_MDI_AUTO;
2047 ret = phy_connect_direct(dev->net, phydev,
2048 lan78xx_link_status_change,
2051 netdev_err(dev->net, "can't attach PHY to %s\n",
2056 /* MAC doesn't support 1000T Half */
2057 phydev->supported &= ~SUPPORTED_1000baseT_Half;
2059 /* support both flow controls */
2060 dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
2061 phydev->advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
2062 mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control);
2063 phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
2065 genphy_config_aneg(phydev);
2067 dev->fc_autoneg = phydev->autoneg;
2071 netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
2076 phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0);
2077 phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0);
2082 static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size)
2088 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
2090 rxenabled = ((buf & MAC_RX_RXEN_) != 0);
2093 buf &= ~MAC_RX_RXEN_;
2094 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2097 /* add 4 to size for FCS */
2098 buf &= ~MAC_RX_MAX_SIZE_MASK_;
2099 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_);
2101 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2104 buf |= MAC_RX_RXEN_;
2105 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2111 static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q)
2113 struct sk_buff *skb;
2114 unsigned long flags;
2117 spin_lock_irqsave(&q->lock, flags);
2118 while (!skb_queue_empty(q)) {
2119 struct skb_data *entry;
2123 skb_queue_walk(q, skb) {
2124 entry = (struct skb_data *)skb->cb;
2125 if (entry->state != unlink_start)
2130 entry->state = unlink_start;
2133 /* Get reference count of the URB to avoid it to be
2134 * freed during usb_unlink_urb, which may trigger
2135 * use-after-free problem inside usb_unlink_urb since
2136 * usb_unlink_urb is always racing with .complete
2137 * handler(include defer_bh).
2140 spin_unlock_irqrestore(&q->lock, flags);
2141 /* during some PM-driven resume scenarios,
2142 * these (async) unlinks complete immediately
2144 ret = usb_unlink_urb(urb);
2145 if (ret != -EINPROGRESS && ret != 0)
2146 netdev_dbg(dev->net, "unlink urb err, %d\n", ret);
2150 spin_lock_irqsave(&q->lock, flags);
2152 spin_unlock_irqrestore(&q->lock, flags);
2156 static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu)
2158 struct lan78xx_net *dev = netdev_priv(netdev);
2159 int ll_mtu = new_mtu + netdev->hard_header_len;
2160 int old_hard_mtu = dev->hard_mtu;
2161 int old_rx_urb_size = dev->rx_urb_size;
2164 /* no second zero-length packet read wanted after mtu-sized packets */
2165 if ((ll_mtu % dev->maxpacket) == 0)
2168 ret = lan78xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
2170 netdev->mtu = new_mtu;
2172 dev->hard_mtu = netdev->mtu + netdev->hard_header_len;
2173 if (dev->rx_urb_size == old_hard_mtu) {
2174 dev->rx_urb_size = dev->hard_mtu;
2175 if (dev->rx_urb_size > old_rx_urb_size) {
2176 if (netif_running(dev->net)) {
2177 unlink_urbs(dev, &dev->rxq);
2178 tasklet_schedule(&dev->bh);
2186 static int lan78xx_set_mac_addr(struct net_device *netdev, void *p)
2188 struct lan78xx_net *dev = netdev_priv(netdev);
2189 struct sockaddr *addr = p;
2190 u32 addr_lo, addr_hi;
2193 if (netif_running(netdev))
2196 if (!is_valid_ether_addr(addr->sa_data))
2197 return -EADDRNOTAVAIL;
2199 ether_addr_copy(netdev->dev_addr, addr->sa_data);
2201 addr_lo = netdev->dev_addr[0] |
2202 netdev->dev_addr[1] << 8 |
2203 netdev->dev_addr[2] << 16 |
2204 netdev->dev_addr[3] << 24;
2205 addr_hi = netdev->dev_addr[4] |
2206 netdev->dev_addr[5] << 8;
2208 ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo);
2209 ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi);
2214 /* Enable or disable Rx checksum offload engine */
2215 static int lan78xx_set_features(struct net_device *netdev,
2216 netdev_features_t features)
2218 struct lan78xx_net *dev = netdev_priv(netdev);
2219 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2220 unsigned long flags;
2223 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
2225 if (features & NETIF_F_RXCSUM) {
2226 pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_;
2227 pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_;
2229 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_);
2230 pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_);
2233 if (features & NETIF_F_HW_VLAN_CTAG_RX)
2234 pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_;
2236 pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_;
2238 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
2240 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
2245 static void lan78xx_deferred_vlan_write(struct work_struct *param)
2247 struct lan78xx_priv *pdata =
2248 container_of(param, struct lan78xx_priv, set_vlan);
2249 struct lan78xx_net *dev = pdata->dev;
2251 lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0,
2252 DP_SEL_VHF_VLAN_LEN, pdata->vlan_table);
2255 static int lan78xx_vlan_rx_add_vid(struct net_device *netdev,
2256 __be16 proto, u16 vid)
2258 struct lan78xx_net *dev = netdev_priv(netdev);
2259 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2261 u16 vid_dword_index;
2263 vid_dword_index = (vid >> 5) & 0x7F;
2264 vid_bit_index = vid & 0x1F;
2266 pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index);
2268 /* defer register writes to a sleepable context */
2269 schedule_work(&pdata->set_vlan);
2274 static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev,
2275 __be16 proto, u16 vid)
2277 struct lan78xx_net *dev = netdev_priv(netdev);
2278 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2280 u16 vid_dword_index;
2282 vid_dword_index = (vid >> 5) & 0x7F;
2283 vid_bit_index = vid & 0x1F;
2285 pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index);
2287 /* defer register writes to a sleepable context */
2288 schedule_work(&pdata->set_vlan);
2293 static void lan78xx_init_ltm(struct lan78xx_net *dev)
2297 u32 regs[6] = { 0 };
2299 ret = lan78xx_read_reg(dev, USB_CFG1, &buf);
2300 if (buf & USB_CFG1_LTM_ENABLE_) {
2302 /* Get values from EEPROM first */
2303 if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) {
2304 if (temp[0] == 24) {
2305 ret = lan78xx_read_raw_eeprom(dev,
2312 } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) {
2313 if (temp[0] == 24) {
2314 ret = lan78xx_read_raw_otp(dev,
2324 lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]);
2325 lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]);
2326 lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]);
2327 lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]);
2328 lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]);
2329 lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]);
2332 static int lan78xx_reset(struct lan78xx_net *dev)
2334 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2337 unsigned long timeout;
2339 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2340 buf |= HW_CFG_LRST_;
2341 ret = lan78xx_write_reg(dev, HW_CFG, buf);
2343 timeout = jiffies + HZ;
2346 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2347 if (time_after(jiffies, timeout)) {
2348 netdev_warn(dev->net,
2349 "timeout on completion of LiteReset");
2352 } while (buf & HW_CFG_LRST_);
2354 lan78xx_init_mac_address(dev);
2356 /* save DEVID for later usage */
2357 ret = lan78xx_read_reg(dev, ID_REV, &buf);
2358 dev->chipid = (buf & ID_REV_CHIP_ID_MASK_) >> 16;
2359 dev->chiprev = buf & ID_REV_CHIP_REV_MASK_;
2361 /* Respond to the IN token with a NAK */
2362 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
2363 buf |= USB_CFG_BIR_;
2364 ret = lan78xx_write_reg(dev, USB_CFG0, buf);
2367 lan78xx_init_ltm(dev);
2369 dev->net->hard_header_len += TX_OVERHEAD;
2370 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
2372 if (dev->udev->speed == USB_SPEED_SUPER) {
2373 buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE;
2374 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2377 } else if (dev->udev->speed == USB_SPEED_HIGH) {
2378 buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
2379 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2380 dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size;
2381 dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu;
2383 buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
2384 dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
2388 ret = lan78xx_write_reg(dev, BURST_CAP, buf);
2389 ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
2391 ret = lan78xx_read_reg(dev, HW_CFG, &buf);
2393 ret = lan78xx_write_reg(dev, HW_CFG, buf);
2395 ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
2396 buf |= USB_CFG_BCE_;
2397 ret = lan78xx_write_reg(dev, USB_CFG0, buf);
2399 /* set FIFO sizes */
2400 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
2401 ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf);
2403 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
2404 ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf);
2406 ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
2407 ret = lan78xx_write_reg(dev, FLOW, 0);
2408 ret = lan78xx_write_reg(dev, FCT_FLOW, 0);
2410 /* Don't need rfe_ctl_lock during initialisation */
2411 ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
2412 pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_;
2413 ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
2415 /* Enable or disable checksum offload engines */
2416 lan78xx_set_features(dev->net, dev->net->features);
2418 lan78xx_set_multicast(dev->net);
2421 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
2422 buf |= PMT_CTL_PHY_RST_;
2423 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
2425 timeout = jiffies + HZ;
2428 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
2429 if (time_after(jiffies, timeout)) {
2430 netdev_warn(dev->net, "timeout waiting for PHY Reset");
2433 } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_));
2435 ret = lan78xx_read_reg(dev, MAC_CR, &buf);
2436 /* LAN7801 only has RGMII mode */
2437 if (dev->chipid == ID_REV_CHIP_ID_7801_)
2438 buf &= ~MAC_CR_GMII_EN_;
2439 buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
2440 ret = lan78xx_write_reg(dev, MAC_CR, buf);
2442 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
2443 buf |= MAC_TX_TXEN_;
2444 ret = lan78xx_write_reg(dev, MAC_TX, buf);
2446 ret = lan78xx_read_reg(dev, FCT_TX_CTL, &buf);
2447 buf |= FCT_TX_CTL_EN_;
2448 ret = lan78xx_write_reg(dev, FCT_TX_CTL, buf);
2450 ret = lan78xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
2452 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
2453 buf |= MAC_RX_RXEN_;
2454 ret = lan78xx_write_reg(dev, MAC_RX, buf);
2456 ret = lan78xx_read_reg(dev, FCT_RX_CTL, &buf);
2457 buf |= FCT_RX_CTL_EN_;
2458 ret = lan78xx_write_reg(dev, FCT_RX_CTL, buf);
2463 static void lan78xx_init_stats(struct lan78xx_net *dev)
2468 /* initialize for stats update
2469 * some counters are 20bits and some are 32bits
2471 p = (u32 *)&dev->stats.rollover_max;
2472 for (i = 0; i < (sizeof(dev->stats.rollover_max) / (sizeof(u32))); i++)
2475 dev->stats.rollover_max.rx_unicast_byte_count = 0xFFFFFFFF;
2476 dev->stats.rollover_max.rx_broadcast_byte_count = 0xFFFFFFFF;
2477 dev->stats.rollover_max.rx_multicast_byte_count = 0xFFFFFFFF;
2478 dev->stats.rollover_max.eee_rx_lpi_transitions = 0xFFFFFFFF;
2479 dev->stats.rollover_max.eee_rx_lpi_time = 0xFFFFFFFF;
2480 dev->stats.rollover_max.tx_unicast_byte_count = 0xFFFFFFFF;
2481 dev->stats.rollover_max.tx_broadcast_byte_count = 0xFFFFFFFF;
2482 dev->stats.rollover_max.tx_multicast_byte_count = 0xFFFFFFFF;
2483 dev->stats.rollover_max.eee_tx_lpi_transitions = 0xFFFFFFFF;
2484 dev->stats.rollover_max.eee_tx_lpi_time = 0xFFFFFFFF;
2486 lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE);
2489 static int lan78xx_open(struct net_device *net)
2491 struct lan78xx_net *dev = netdev_priv(net);
2494 ret = usb_autopm_get_interface(dev->intf);
2498 ret = lan78xx_reset(dev);
2502 ret = lan78xx_phy_init(dev);
2506 /* for Link Check */
2507 if (dev->urb_intr) {
2508 ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);
2510 netif_err(dev, ifup, dev->net,
2511 "intr submit %d\n", ret);
2516 lan78xx_init_stats(dev);
2518 set_bit(EVENT_DEV_OPEN, &dev->flags);
2520 netif_start_queue(net);
2522 dev->link_on = false;
2524 lan78xx_defer_kevent(dev, EVENT_LINK_RESET);
2526 usb_autopm_put_interface(dev->intf);
2532 static void lan78xx_terminate_urbs(struct lan78xx_net *dev)
2534 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup);
2535 DECLARE_WAITQUEUE(wait, current);
2538 /* ensure there are no more active urbs */
2539 add_wait_queue(&unlink_wakeup, &wait);
2540 set_current_state(TASK_UNINTERRUPTIBLE);
2541 dev->wait = &unlink_wakeup;
2542 temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq);
2544 /* maybe wait for deletions to finish. */
2545 while (!skb_queue_empty(&dev->rxq) &&
2546 !skb_queue_empty(&dev->txq) &&
2547 !skb_queue_empty(&dev->done)) {
2548 schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS));
2549 set_current_state(TASK_UNINTERRUPTIBLE);
2550 netif_dbg(dev, ifdown, dev->net,
2551 "waited for %d urb completions\n", temp);
2553 set_current_state(TASK_RUNNING);
2555 remove_wait_queue(&unlink_wakeup, &wait);
2558 static int lan78xx_stop(struct net_device *net)
2560 struct lan78xx_net *dev = netdev_priv(net);
2562 if (timer_pending(&dev->stat_monitor))
2563 del_timer_sync(&dev->stat_monitor);
2565 phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0);
2566 phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0);
2568 phy_stop(net->phydev);
2569 phy_disconnect(net->phydev);
2573 clear_bit(EVENT_DEV_OPEN, &dev->flags);
2574 netif_stop_queue(net);
2576 netif_info(dev, ifdown, dev->net,
2577 "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n",
2578 net->stats.rx_packets, net->stats.tx_packets,
2579 net->stats.rx_errors, net->stats.tx_errors);
2581 lan78xx_terminate_urbs(dev);
2583 usb_kill_urb(dev->urb_intr);
2585 skb_queue_purge(&dev->rxq_pause);
2587 /* deferred work (task, timer, softirq) must also stop.
2588 * can't flush_scheduled_work() until we drop rtnl (later),
2589 * else workers could deadlock; so make workers a NOP.
2592 cancel_delayed_work_sync(&dev->wq);
2593 tasklet_kill(&dev->bh);
2595 usb_autopm_put_interface(dev->intf);
2600 static int lan78xx_linearize(struct sk_buff *skb)
2602 return skb_linearize(skb);
2605 static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
2606 struct sk_buff *skb, gfp_t flags)
2608 u32 tx_cmd_a, tx_cmd_b;
2610 if (skb_headroom(skb) < TX_OVERHEAD) {
2611 struct sk_buff *skb2;
2613 skb2 = skb_copy_expand(skb, TX_OVERHEAD, 0, flags);
2614 dev_kfree_skb_any(skb);
2620 if (lan78xx_linearize(skb) < 0)
2623 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_;
2625 if (skb->ip_summed == CHECKSUM_PARTIAL)
2626 tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_;
2629 if (skb_is_gso(skb)) {
2630 u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_);
2632 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_;
2634 tx_cmd_a |= TX_CMD_A_LSO_;
2637 if (skb_vlan_tag_present(skb)) {
2638 tx_cmd_a |= TX_CMD_A_IVTG_;
2639 tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_;
2643 cpu_to_le32s(&tx_cmd_b);
2644 memcpy(skb->data, &tx_cmd_b, 4);
2647 cpu_to_le32s(&tx_cmd_a);
2648 memcpy(skb->data, &tx_cmd_a, 4);
2653 static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb,
2654 struct sk_buff_head *list, enum skb_state state)
2656 unsigned long flags;
2657 enum skb_state old_state;
2658 struct skb_data *entry = (struct skb_data *)skb->cb;
2660 spin_lock_irqsave(&list->lock, flags);
2661 old_state = entry->state;
2662 entry->state = state;
2664 __skb_unlink(skb, list);
2665 spin_unlock(&list->lock);
2666 spin_lock(&dev->done.lock);
2668 __skb_queue_tail(&dev->done, skb);
2669 if (skb_queue_len(&dev->done) == 1)
2670 tasklet_schedule(&dev->bh);
2671 spin_unlock_irqrestore(&dev->done.lock, flags);
2676 static void tx_complete(struct urb *urb)
2678 struct sk_buff *skb = (struct sk_buff *)urb->context;
2679 struct skb_data *entry = (struct skb_data *)skb->cb;
2680 struct lan78xx_net *dev = entry->dev;
2682 if (urb->status == 0) {
2683 dev->net->stats.tx_packets += entry->num_of_packet;
2684 dev->net->stats.tx_bytes += entry->length;
2686 dev->net->stats.tx_errors++;
2688 switch (urb->status) {
2690 lan78xx_defer_kevent(dev, EVENT_TX_HALT);
2693 /* software-driven interface shutdown */
2701 netif_stop_queue(dev->net);
2704 netif_dbg(dev, tx_err, dev->net,
2705 "tx err %d\n", entry->urb->status);
2710 usb_autopm_put_interface_async(dev->intf);
2712 defer_bh(dev, skb, &dev->txq, tx_done);
2715 static void lan78xx_queue_skb(struct sk_buff_head *list,
2716 struct sk_buff *newsk, enum skb_state state)
2718 struct skb_data *entry = (struct skb_data *)newsk->cb;
2720 __skb_queue_tail(list, newsk);
2721 entry->state = state;
2725 lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net)
2727 struct lan78xx_net *dev = netdev_priv(net);
2728 struct sk_buff *skb2 = NULL;
2731 skb_tx_timestamp(skb);
2732 skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC);
2736 skb_queue_tail(&dev->txq_pend, skb2);
2738 /* throttle TX patch at slower than SUPER SPEED USB */
2739 if ((dev->udev->speed < USB_SPEED_SUPER) &&
2740 (skb_queue_len(&dev->txq_pend) > 10))
2741 netif_stop_queue(net);
2743 netif_dbg(dev, tx_err, dev->net,
2744 "lan78xx_tx_prep return NULL\n");
2745 dev->net->stats.tx_errors++;
2746 dev->net->stats.tx_dropped++;
2749 tasklet_schedule(&dev->bh);
2751 return NETDEV_TX_OK;
2755 lan78xx_get_endpoints(struct lan78xx_net *dev, struct usb_interface *intf)
2758 struct usb_host_interface *alt = NULL;
2759 struct usb_host_endpoint *in = NULL, *out = NULL;
2760 struct usb_host_endpoint *status = NULL;
2762 for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
2768 alt = intf->altsetting + tmp;
2770 for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
2771 struct usb_host_endpoint *e;
2774 e = alt->endpoint + ep;
2775 switch (e->desc.bmAttributes) {
2776 case USB_ENDPOINT_XFER_INT:
2777 if (!usb_endpoint_dir_in(&e->desc))
2781 case USB_ENDPOINT_XFER_BULK:
2786 if (usb_endpoint_dir_in(&e->desc)) {
2789 else if (intr && !status)
2799 if (!alt || !in || !out)
2802 dev->pipe_in = usb_rcvbulkpipe(dev->udev,
2803 in->desc.bEndpointAddress &
2804 USB_ENDPOINT_NUMBER_MASK);
2805 dev->pipe_out = usb_sndbulkpipe(dev->udev,
2806 out->desc.bEndpointAddress &
2807 USB_ENDPOINT_NUMBER_MASK);
2808 dev->ep_intr = status;
2813 static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf)
2815 struct lan78xx_priv *pdata = NULL;
2819 ret = lan78xx_get_endpoints(dev, intf);
2821 dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL);
2823 pdata = (struct lan78xx_priv *)(dev->data[0]);
2825 netdev_warn(dev->net, "Unable to allocate lan78xx_priv");
2831 spin_lock_init(&pdata->rfe_ctl_lock);
2832 mutex_init(&pdata->dataport_mutex);
2834 INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write);
2836 for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++)
2837 pdata->vlan_table[i] = 0;
2839 INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write);
2841 dev->net->features = 0;
2843 if (DEFAULT_TX_CSUM_ENABLE)
2844 dev->net->features |= NETIF_F_HW_CSUM;
2846 if (DEFAULT_RX_CSUM_ENABLE)
2847 dev->net->features |= NETIF_F_RXCSUM;
2849 if (DEFAULT_TSO_CSUM_ENABLE)
2850 dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG;
2852 dev->net->hw_features = dev->net->features;
2854 ret = lan78xx_setup_irq_domain(dev);
2856 netdev_warn(dev->net,
2857 "lan78xx_setup_irq_domain() failed : %d", ret);
2862 /* Init all registers */
2863 ret = lan78xx_reset(dev);
2865 lan78xx_mdio_init(dev);
2867 dev->net->flags |= IFF_MULTICAST;
2869 pdata->wol = WAKE_MAGIC;
2874 static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf)
2876 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
2878 lan78xx_remove_irq_domain(dev);
2880 lan78xx_remove_mdio(dev);
2883 netif_dbg(dev, ifdown, dev->net, "free pdata");
2890 static void lan78xx_rx_csum_offload(struct lan78xx_net *dev,
2891 struct sk_buff *skb,
2892 u32 rx_cmd_a, u32 rx_cmd_b)
2894 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2895 unlikely(rx_cmd_a & RX_CMD_A_ICSM_)) {
2896 skb->ip_summed = CHECKSUM_NONE;
2898 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_));
2899 skb->ip_summed = CHECKSUM_COMPLETE;
2903 static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb)
2907 if (test_bit(EVENT_RX_PAUSED, &dev->flags)) {
2908 skb_queue_tail(&dev->rxq_pause, skb);
2912 dev->net->stats.rx_packets++;
2913 dev->net->stats.rx_bytes += skb->len;
2915 skb->protocol = eth_type_trans(skb, dev->net);
2917 netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n",
2918 skb->len + sizeof(struct ethhdr), skb->protocol);
2919 memset(skb->cb, 0, sizeof(struct skb_data));
2921 if (skb_defer_rx_timestamp(skb))
2924 status = netif_rx(skb);
2925 if (status != NET_RX_SUCCESS)
2926 netif_dbg(dev, rx_err, dev->net,
2927 "netif_rx status %d\n", status);
2930 static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb)
2932 if (skb->len < dev->net->hard_header_len)
2935 while (skb->len > 0) {
2936 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2938 struct sk_buff *skb2;
2939 unsigned char *packet;
2941 memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
2942 le32_to_cpus(&rx_cmd_a);
2943 skb_pull(skb, sizeof(rx_cmd_a));
2945 memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
2946 le32_to_cpus(&rx_cmd_b);
2947 skb_pull(skb, sizeof(rx_cmd_b));
2949 memcpy(&rx_cmd_c, skb->data, sizeof(rx_cmd_c));
2950 le16_to_cpus(&rx_cmd_c);
2951 skb_pull(skb, sizeof(rx_cmd_c));
2955 /* get the packet length */
2956 size = (rx_cmd_a & RX_CMD_A_LEN_MASK_);
2957 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2959 if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) {
2960 netif_dbg(dev, rx_err, dev->net,
2961 "Error rx_cmd_a=0x%08x", rx_cmd_a);
2963 /* last frame in this batch */
2964 if (skb->len == size) {
2965 lan78xx_rx_csum_offload(dev, skb,
2966 rx_cmd_a, rx_cmd_b);
2968 skb_trim(skb, skb->len - 4); /* remove fcs */
2969 skb->truesize = size + sizeof(struct sk_buff);
2974 skb2 = skb_clone(skb, GFP_ATOMIC);
2975 if (unlikely(!skb2)) {
2976 netdev_warn(dev->net, "Error allocating skb");
2981 skb2->data = packet;
2982 skb_set_tail_pointer(skb2, size);
2984 lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b);
2986 skb_trim(skb2, skb2->len - 4); /* remove fcs */
2987 skb2->truesize = size + sizeof(struct sk_buff);
2989 lan78xx_skb_return(dev, skb2);
2992 skb_pull(skb, size);
2994 /* padding bytes before the next frame starts */
2996 skb_pull(skb, align_count);
3002 static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb)
3004 if (!lan78xx_rx(dev, skb)) {
3005 dev->net->stats.rx_errors++;
3010 lan78xx_skb_return(dev, skb);
3014 netif_dbg(dev, rx_err, dev->net, "drop\n");
3015 dev->net->stats.rx_errors++;
3017 skb_queue_tail(&dev->done, skb);
3020 static void rx_complete(struct urb *urb);
3022 static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags)
3024 struct sk_buff *skb;
3025 struct skb_data *entry;
3026 unsigned long lockflags;
3027 size_t size = dev->rx_urb_size;
3030 skb = netdev_alloc_skb_ip_align(dev->net, size);
3036 entry = (struct skb_data *)skb->cb;
3041 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in,
3042 skb->data, size, rx_complete, skb);
3044 spin_lock_irqsave(&dev->rxq.lock, lockflags);
3046 if (netif_device_present(dev->net) &&
3047 netif_running(dev->net) &&
3048 !test_bit(EVENT_RX_HALT, &dev->flags) &&
3049 !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3050 ret = usb_submit_urb(urb, GFP_ATOMIC);
3053 lan78xx_queue_skb(&dev->rxq, skb, rx_start);
3056 lan78xx_defer_kevent(dev, EVENT_RX_HALT);
3059 netif_dbg(dev, ifdown, dev->net, "device gone\n");
3060 netif_device_detach(dev->net);
3066 netif_dbg(dev, rx_err, dev->net,
3067 "rx submit, %d\n", ret);
3068 tasklet_schedule(&dev->bh);
3071 netif_dbg(dev, ifdown, dev->net, "rx: stopped\n");
3074 spin_unlock_irqrestore(&dev->rxq.lock, lockflags);
3076 dev_kfree_skb_any(skb);
3082 static void rx_complete(struct urb *urb)
3084 struct sk_buff *skb = (struct sk_buff *)urb->context;
3085 struct skb_data *entry = (struct skb_data *)skb->cb;
3086 struct lan78xx_net *dev = entry->dev;
3087 int urb_status = urb->status;
3088 enum skb_state state;
3090 skb_put(skb, urb->actual_length);
3094 switch (urb_status) {
3096 if (skb->len < dev->net->hard_header_len) {
3098 dev->net->stats.rx_errors++;
3099 dev->net->stats.rx_length_errors++;
3100 netif_dbg(dev, rx_err, dev->net,
3101 "rx length %d\n", skb->len);
3103 usb_mark_last_busy(dev->udev);
3106 dev->net->stats.rx_errors++;
3107 lan78xx_defer_kevent(dev, EVENT_RX_HALT);
3109 case -ECONNRESET: /* async unlink */
3110 case -ESHUTDOWN: /* hardware gone */
3111 netif_dbg(dev, ifdown, dev->net,
3112 "rx shutdown, code %d\n", urb_status);
3120 dev->net->stats.rx_errors++;
3126 /* data overrun ... flush fifo? */
3128 dev->net->stats.rx_over_errors++;
3133 dev->net->stats.rx_errors++;
3134 netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status);
3138 state = defer_bh(dev, skb, &dev->rxq, state);
3141 if (netif_running(dev->net) &&
3142 !test_bit(EVENT_RX_HALT, &dev->flags) &&
3143 state != unlink_start) {
3144 rx_submit(dev, urb, GFP_ATOMIC);
3149 netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n");
3152 static void lan78xx_tx_bh(struct lan78xx_net *dev)
3155 struct urb *urb = NULL;
3156 struct skb_data *entry;
3157 unsigned long flags;
3158 struct sk_buff_head *tqp = &dev->txq_pend;
3159 struct sk_buff *skb, *skb2;
3162 int skb_totallen, pkt_cnt;
3168 for (skb = tqp->next; pkt_cnt < tqp->qlen; skb = skb->next) {
3169 if (skb_is_gso(skb)) {
3171 /* handle previous packets first */
3175 length = skb->len - TX_OVERHEAD;
3176 skb2 = skb_dequeue(tqp);
3180 if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE)
3182 skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32));
3186 /* copy to a single skb */
3187 skb = alloc_skb(skb_totallen, GFP_ATOMIC);
3191 skb_put(skb, skb_totallen);
3193 for (count = pos = 0; count < pkt_cnt; count++) {
3194 skb2 = skb_dequeue(tqp);
3196 length += (skb2->len - TX_OVERHEAD);
3197 memcpy(skb->data + pos, skb2->data, skb2->len);
3198 pos += roundup(skb2->len, sizeof(u32));
3199 dev_kfree_skb(skb2);
3204 urb = usb_alloc_urb(0, GFP_ATOMIC);
3208 entry = (struct skb_data *)skb->cb;
3211 entry->length = length;
3212 entry->num_of_packet = count;
3214 spin_lock_irqsave(&dev->txq.lock, flags);
3215 ret = usb_autopm_get_interface_async(dev->intf);
3217 spin_unlock_irqrestore(&dev->txq.lock, flags);
3221 usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out,
3222 skb->data, skb->len, tx_complete, skb);
3224 if (length % dev->maxpacket == 0) {
3225 /* send USB_ZERO_PACKET */
3226 urb->transfer_flags |= URB_ZERO_PACKET;
3230 /* if this triggers the device is still a sleep */
3231 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3232 /* transmission will be done in resume */
3233 usb_anchor_urb(urb, &dev->deferred);
3234 /* no use to process more packets */
3235 netif_stop_queue(dev->net);
3237 spin_unlock_irqrestore(&dev->txq.lock, flags);
3238 netdev_dbg(dev->net, "Delaying transmission for resumption\n");
3243 ret = usb_submit_urb(urb, GFP_ATOMIC);
3246 netif_trans_update(dev->net);
3247 lan78xx_queue_skb(&dev->txq, skb, tx_start);
3248 if (skb_queue_len(&dev->txq) >= dev->tx_qlen)
3249 netif_stop_queue(dev->net);
3252 netif_stop_queue(dev->net);
3253 lan78xx_defer_kevent(dev, EVENT_TX_HALT);
3254 usb_autopm_put_interface_async(dev->intf);
3257 usb_autopm_put_interface_async(dev->intf);
3258 netif_dbg(dev, tx_err, dev->net,
3259 "tx: submit urb err %d\n", ret);
3263 spin_unlock_irqrestore(&dev->txq.lock, flags);
3266 netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret);
3268 dev->net->stats.tx_dropped++;
3270 dev_kfree_skb_any(skb);
3273 netif_dbg(dev, tx_queued, dev->net,
3274 "> tx, len %d, type 0x%x\n", length, skb->protocol);
3277 static void lan78xx_rx_bh(struct lan78xx_net *dev)
3282 if (skb_queue_len(&dev->rxq) < dev->rx_qlen) {
3283 for (i = 0; i < 10; i++) {
3284 if (skb_queue_len(&dev->rxq) >= dev->rx_qlen)
3286 urb = usb_alloc_urb(0, GFP_ATOMIC);
3288 if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK)
3292 if (skb_queue_len(&dev->rxq) < dev->rx_qlen)
3293 tasklet_schedule(&dev->bh);
3295 if (skb_queue_len(&dev->txq) < dev->tx_qlen)
3296 netif_wake_queue(dev->net);
3299 static void lan78xx_bh(unsigned long param)
3301 struct lan78xx_net *dev = (struct lan78xx_net *)param;
3302 struct sk_buff *skb;
3303 struct skb_data *entry;
3305 while ((skb = skb_dequeue(&dev->done))) {
3306 entry = (struct skb_data *)(skb->cb);
3307 switch (entry->state) {
3309 entry->state = rx_cleanup;
3310 rx_process(dev, skb);
3313 usb_free_urb(entry->urb);
3317 usb_free_urb(entry->urb);
3321 netdev_dbg(dev->net, "skb state %d\n", entry->state);
3326 if (netif_device_present(dev->net) && netif_running(dev->net)) {
3327 /* reset update timer delta */
3328 if (timer_pending(&dev->stat_monitor) && (dev->delta != 1)) {
3330 mod_timer(&dev->stat_monitor,
3331 jiffies + STAT_UPDATE_TIMER);
3334 if (!skb_queue_empty(&dev->txq_pend))
3337 if (!timer_pending(&dev->delay) &&
3338 !test_bit(EVENT_RX_HALT, &dev->flags))
3343 static void lan78xx_delayedwork(struct work_struct *work)
3346 struct lan78xx_net *dev;
3348 dev = container_of(work, struct lan78xx_net, wq.work);
3350 if (test_bit(EVENT_TX_HALT, &dev->flags)) {
3351 unlink_urbs(dev, &dev->txq);
3352 status = usb_autopm_get_interface(dev->intf);
3355 status = usb_clear_halt(dev->udev, dev->pipe_out);
3356 usb_autopm_put_interface(dev->intf);
3359 status != -ESHUTDOWN) {
3360 if (netif_msg_tx_err(dev))
3362 netdev_err(dev->net,
3363 "can't clear tx halt, status %d\n",
3366 clear_bit(EVENT_TX_HALT, &dev->flags);
3367 if (status != -ESHUTDOWN)
3368 netif_wake_queue(dev->net);
3371 if (test_bit(EVENT_RX_HALT, &dev->flags)) {
3372 unlink_urbs(dev, &dev->rxq);
3373 status = usb_autopm_get_interface(dev->intf);
3376 status = usb_clear_halt(dev->udev, dev->pipe_in);
3377 usb_autopm_put_interface(dev->intf);
3380 status != -ESHUTDOWN) {
3381 if (netif_msg_rx_err(dev))
3383 netdev_err(dev->net,
3384 "can't clear rx halt, status %d\n",
3387 clear_bit(EVENT_RX_HALT, &dev->flags);
3388 tasklet_schedule(&dev->bh);
3392 if (test_bit(EVENT_LINK_RESET, &dev->flags)) {
3395 clear_bit(EVENT_LINK_RESET, &dev->flags);
3396 status = usb_autopm_get_interface(dev->intf);
3399 if (lan78xx_link_reset(dev) < 0) {
3400 usb_autopm_put_interface(dev->intf);
3402 netdev_info(dev->net, "link reset failed (%d)\n",
3405 usb_autopm_put_interface(dev->intf);
3409 if (test_bit(EVENT_STAT_UPDATE, &dev->flags)) {
3410 lan78xx_update_stats(dev);
3412 clear_bit(EVENT_STAT_UPDATE, &dev->flags);
3414 mod_timer(&dev->stat_monitor,
3415 jiffies + (STAT_UPDATE_TIMER * dev->delta));
3417 dev->delta = min((dev->delta * 2), 50);
3421 static void intr_complete(struct urb *urb)
3423 struct lan78xx_net *dev = urb->context;
3424 int status = urb->status;
3429 lan78xx_status(dev, urb);
3432 /* software-driven interface shutdown */
3433 case -ENOENT: /* urb killed */
3434 case -ESHUTDOWN: /* hardware gone */
3435 netif_dbg(dev, ifdown, dev->net,
3436 "intr shutdown, code %d\n", status);
3439 /* NOTE: not throttling like RX/TX, since this endpoint
3440 * already polls infrequently
3443 netdev_dbg(dev->net, "intr status %d\n", status);
3447 if (!netif_running(dev->net))
3450 memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
3451 status = usb_submit_urb(urb, GFP_ATOMIC);
3453 netif_err(dev, timer, dev->net,
3454 "intr resubmit --> %d\n", status);
3457 static void lan78xx_disconnect(struct usb_interface *intf)
3459 struct lan78xx_net *dev;
3460 struct usb_device *udev;
3461 struct net_device *net;
3463 dev = usb_get_intfdata(intf);
3464 usb_set_intfdata(intf, NULL);
3468 udev = interface_to_usbdev(intf);
3471 unregister_netdev(net);
3473 cancel_delayed_work_sync(&dev->wq);
3475 usb_scuttle_anchored_urbs(&dev->deferred);
3477 lan78xx_unbind(dev, intf);
3479 usb_kill_urb(dev->urb_intr);
3480 usb_free_urb(dev->urb_intr);
3486 static void lan78xx_tx_timeout(struct net_device *net)
3488 struct lan78xx_net *dev = netdev_priv(net);
3490 unlink_urbs(dev, &dev->txq);
3491 tasklet_schedule(&dev->bh);
3494 static const struct net_device_ops lan78xx_netdev_ops = {
3495 .ndo_open = lan78xx_open,
3496 .ndo_stop = lan78xx_stop,
3497 .ndo_start_xmit = lan78xx_start_xmit,
3498 .ndo_tx_timeout = lan78xx_tx_timeout,
3499 .ndo_change_mtu = lan78xx_change_mtu,
3500 .ndo_set_mac_address = lan78xx_set_mac_addr,
3501 .ndo_validate_addr = eth_validate_addr,
3502 .ndo_do_ioctl = lan78xx_ioctl,
3503 .ndo_set_rx_mode = lan78xx_set_multicast,
3504 .ndo_set_features = lan78xx_set_features,
3505 .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid,
3506 .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid,
3509 static void lan78xx_stat_monitor(unsigned long param)
3511 struct lan78xx_net *dev;
3513 dev = (struct lan78xx_net *)param;
3515 lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE);
3518 static int lan78xx_probe(struct usb_interface *intf,
3519 const struct usb_device_id *id)
3521 struct lan78xx_net *dev;
3522 struct net_device *netdev;
3523 struct usb_device *udev;
3529 udev = interface_to_usbdev(intf);
3530 udev = usb_get_dev(udev);
3533 netdev = alloc_etherdev(sizeof(struct lan78xx_net));
3535 dev_err(&intf->dev, "Error: OOM\n");
3539 /* netdev_printk() needs this */
3540 SET_NETDEV_DEV(netdev, &intf->dev);
3542 dev = netdev_priv(netdev);
3546 dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
3547 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
3549 skb_queue_head_init(&dev->rxq);
3550 skb_queue_head_init(&dev->txq);
3551 skb_queue_head_init(&dev->done);
3552 skb_queue_head_init(&dev->rxq_pause);
3553 skb_queue_head_init(&dev->txq_pend);
3554 mutex_init(&dev->phy_mutex);
3556 tasklet_init(&dev->bh, lan78xx_bh, (unsigned long)dev);
3557 INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork);
3558 init_usb_anchor(&dev->deferred);
3560 netdev->netdev_ops = &lan78xx_netdev_ops;
3561 netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES;
3562 netdev->ethtool_ops = &lan78xx_ethtool_ops;
3564 dev->stat_monitor.function = lan78xx_stat_monitor;
3565 dev->stat_monitor.data = (unsigned long)dev;
3567 init_timer(&dev->stat_monitor);
3569 mutex_init(&dev->stats.access_lock);
3571 ret = lan78xx_bind(dev, intf);
3574 strcpy(netdev->name, "eth%d");
3576 if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len))
3577 netdev->mtu = dev->hard_mtu - netdev->hard_header_len;
3579 /* MTU range: 68 - 9000 */
3580 netdev->max_mtu = MAX_SINGLE_PACKET_SIZE;
3582 dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0;
3583 dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1;
3584 dev->ep_intr = (intf->cur_altsetting)->endpoint + 2;
3586 dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE);
3587 dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE);
3589 dev->pipe_intr = usb_rcvintpipe(dev->udev,
3590 dev->ep_intr->desc.bEndpointAddress &
3591 USB_ENDPOINT_NUMBER_MASK);
3592 period = dev->ep_intr->desc.bInterval;
3594 maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
3595 buf = kmalloc(maxp, GFP_KERNEL);
3597 dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL);
3598 if (!dev->urb_intr) {
3603 usb_fill_int_urb(dev->urb_intr, dev->udev,
3604 dev->pipe_intr, buf, maxp,
3605 intr_complete, dev, period);
3609 dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1);
3611 /* driver requires remote-wakeup capability during autosuspend. */
3612 intf->needs_remote_wakeup = 1;
3614 ret = register_netdev(netdev);
3616 netif_err(dev, probe, netdev, "couldn't register the device\n");
3620 usb_set_intfdata(intf, dev);
3622 ret = device_set_wakeup_enable(&udev->dev, true);
3624 /* Default delay of 2sec has more overhead than advantage.
3625 * Set to 10sec as default.
3627 pm_runtime_set_autosuspend_delay(&udev->dev,
3628 DEFAULT_AUTOSUSPEND_DELAY);
3633 lan78xx_unbind(dev, intf);
3635 free_netdev(netdev);
3642 static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len)
3644 const u16 crc16poly = 0x8005;
3650 for (i = 0; i < len; i++) {
3652 for (bit = 0; bit < 8; bit++) {
3656 if (msb ^ (u16)(data & 1)) {
3658 crc |= (u16)0x0001U;
3667 static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol)
3675 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
3676 const u8 ipv6_multicast[3] = { 0x33, 0x33 };
3677 const u8 arp_type[2] = { 0x08, 0x06 };
3679 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3680 buf &= ~MAC_TX_TXEN_;
3681 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3682 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3683 buf &= ~MAC_RX_RXEN_;
3684 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3686 ret = lan78xx_write_reg(dev, WUCSR, 0);
3687 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3688 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3693 ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl);
3694 temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_;
3695 temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_;
3697 for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++)
3698 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0);
3701 if (wol & WAKE_PHY) {
3702 temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_;
3704 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3705 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3706 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3708 if (wol & WAKE_MAGIC) {
3709 temp_wucsr |= WUCSR_MPEN_;
3711 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3712 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3713 temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_;
3715 if (wol & WAKE_BCAST) {
3716 temp_wucsr |= WUCSR_BCST_EN_;
3718 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3719 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3720 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3722 if (wol & WAKE_MCAST) {
3723 temp_wucsr |= WUCSR_WAKE_EN_;
3725 /* set WUF_CFG & WUF_MASK for IPv4 Multicast */
3726 crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3);
3727 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3729 WUF_CFGX_TYPE_MCAST_ |
3730 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3731 (crc & WUF_CFGX_CRC16_MASK_));
3733 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7);
3734 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3735 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3736 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3739 /* for IPv6 Multicast */
3740 crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2);
3741 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3743 WUF_CFGX_TYPE_MCAST_ |
3744 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3745 (crc & WUF_CFGX_CRC16_MASK_));
3747 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3);
3748 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3749 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3750 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
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_;
3757 if (wol & WAKE_UCAST) {
3758 temp_wucsr |= WUCSR_PFDA_EN_;
3760 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3761 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3762 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3764 if (wol & WAKE_ARP) {
3765 temp_wucsr |= WUCSR_WAKE_EN_;
3767 /* set WUF_CFG & WUF_MASK
3768 * for packettype (offset 12,13) = ARP (0x0806)
3770 crc = lan78xx_wakeframe_crc16(arp_type, 2);
3771 ret = lan78xx_write_reg(dev, WUF_CFG(mask_index),
3773 WUF_CFGX_TYPE_ALL_ |
3774 (0 << WUF_CFGX_OFFSET_SHIFT_) |
3775 (crc & WUF_CFGX_CRC16_MASK_));
3777 ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000);
3778 ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0);
3779 ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0);
3780 ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0);
3783 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3784 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3785 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3788 ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr);
3790 /* when multiple WOL bits are set */
3791 if (hweight_long((unsigned long)wol) > 1) {
3792 temp_pmt_ctl |= PMT_CTL_WOL_EN_;
3793 temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_;
3794 temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_;
3796 ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl);
3799 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3800 buf |= PMT_CTL_WUPS_MASK_;
3801 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3803 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3804 buf |= MAC_RX_RXEN_;
3805 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3810 static int lan78xx_suspend(struct usb_interface *intf, pm_message_t message)
3812 struct lan78xx_net *dev = usb_get_intfdata(intf);
3813 struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
3818 event = message.event;
3820 if (!dev->suspend_count++) {
3821 spin_lock_irq(&dev->txq.lock);
3822 /* don't autosuspend while transmitting */
3823 if ((skb_queue_len(&dev->txq) ||
3824 skb_queue_len(&dev->txq_pend)) &&
3825 PMSG_IS_AUTO(message)) {
3826 spin_unlock_irq(&dev->txq.lock);
3830 set_bit(EVENT_DEV_ASLEEP, &dev->flags);
3831 spin_unlock_irq(&dev->txq.lock);
3835 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3836 buf &= ~MAC_TX_TXEN_;
3837 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3838 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3839 buf &= ~MAC_RX_RXEN_;
3840 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3842 /* empty out the rx and queues */
3843 netif_device_detach(dev->net);
3844 lan78xx_terminate_urbs(dev);
3845 usb_kill_urb(dev->urb_intr);
3848 netif_device_attach(dev->net);
3851 if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) {
3852 del_timer(&dev->stat_monitor);
3854 if (PMSG_IS_AUTO(message)) {
3855 /* auto suspend (selective suspend) */
3856 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3857 buf &= ~MAC_TX_TXEN_;
3858 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3859 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3860 buf &= ~MAC_RX_RXEN_;
3861 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3863 ret = lan78xx_write_reg(dev, WUCSR, 0);
3864 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3865 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3867 /* set goodframe wakeup */
3868 ret = lan78xx_read_reg(dev, WUCSR, &buf);
3870 buf |= WUCSR_RFE_WAKE_EN_;
3871 buf |= WUCSR_STORE_WAKE_;
3873 ret = lan78xx_write_reg(dev, WUCSR, buf);
3875 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3877 buf &= ~PMT_CTL_RES_CLR_WKP_EN_;
3878 buf |= PMT_CTL_RES_CLR_WKP_STS_;
3880 buf |= PMT_CTL_PHY_WAKE_EN_;
3881 buf |= PMT_CTL_WOL_EN_;
3882 buf &= ~PMT_CTL_SUS_MODE_MASK_;
3883 buf |= PMT_CTL_SUS_MODE_3_;
3885 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3887 ret = lan78xx_read_reg(dev, PMT_CTL, &buf);
3889 buf |= PMT_CTL_WUPS_MASK_;
3891 ret = lan78xx_write_reg(dev, PMT_CTL, buf);
3893 ret = lan78xx_read_reg(dev, MAC_RX, &buf);
3894 buf |= MAC_RX_RXEN_;
3895 ret = lan78xx_write_reg(dev, MAC_RX, buf);
3897 lan78xx_set_suspend(dev, pdata->wol);
3906 static int lan78xx_resume(struct usb_interface *intf)
3908 struct lan78xx_net *dev = usb_get_intfdata(intf);
3909 struct sk_buff *skb;
3914 if (!timer_pending(&dev->stat_monitor)) {
3916 mod_timer(&dev->stat_monitor,
3917 jiffies + STAT_UPDATE_TIMER);
3920 if (!--dev->suspend_count) {
3921 /* resume interrupt URBs */
3922 if (dev->urb_intr && test_bit(EVENT_DEV_OPEN, &dev->flags))
3923 usb_submit_urb(dev->urb_intr, GFP_NOIO);
3925 spin_lock_irq(&dev->txq.lock);
3926 while ((res = usb_get_from_anchor(&dev->deferred))) {
3927 skb = (struct sk_buff *)res->context;
3928 ret = usb_submit_urb(res, GFP_ATOMIC);
3930 dev_kfree_skb_any(skb);
3932 usb_autopm_put_interface_async(dev->intf);
3934 netif_trans_update(dev->net);
3935 lan78xx_queue_skb(&dev->txq, skb, tx_start);
3939 clear_bit(EVENT_DEV_ASLEEP, &dev->flags);
3940 spin_unlock_irq(&dev->txq.lock);
3942 if (test_bit(EVENT_DEV_OPEN, &dev->flags)) {
3943 if (!(skb_queue_len(&dev->txq) >= dev->tx_qlen))
3944 netif_start_queue(dev->net);
3945 tasklet_schedule(&dev->bh);
3949 ret = lan78xx_write_reg(dev, WUCSR2, 0);
3950 ret = lan78xx_write_reg(dev, WUCSR, 0);
3951 ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL);
3953 ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ |
3955 WUCSR2_IPV6_TCPSYN_RCD_ |
3956 WUCSR2_IPV4_TCPSYN_RCD_);
3958 ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ |
3959 WUCSR_EEE_RX_WAKE_ |
3961 WUCSR_RFE_WAKE_FR_ |
3966 ret = lan78xx_read_reg(dev, MAC_TX, &buf);
3967 buf |= MAC_TX_TXEN_;
3968 ret = lan78xx_write_reg(dev, MAC_TX, buf);
3973 static int lan78xx_reset_resume(struct usb_interface *intf)
3975 struct lan78xx_net *dev = usb_get_intfdata(intf);
3979 lan78xx_phy_init(dev);
3981 return lan78xx_resume(intf);
3984 static const struct usb_device_id products[] = {
3986 /* LAN7800 USB Gigabit Ethernet Device */
3987 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID),
3990 /* LAN7850 USB Gigabit Ethernet Device */
3991 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID),
3994 /* LAN7801 USB Gigabit Ethernet Device */
3995 USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID),
3999 MODULE_DEVICE_TABLE(usb, products);
4001 static struct usb_driver lan78xx_driver = {
4002 .name = DRIVER_NAME,
4003 .id_table = products,
4004 .probe = lan78xx_probe,
4005 .disconnect = lan78xx_disconnect,
4006 .suspend = lan78xx_suspend,
4007 .resume = lan78xx_resume,
4008 .reset_resume = lan78xx_reset_resume,
4009 .supports_autosuspend = 1,
4010 .disable_hub_initiated_lpm = 1,
4013 module_usb_driver(lan78xx_driver);
4015 MODULE_AUTHOR(DRIVER_AUTHOR);
4016 MODULE_DESCRIPTION(DRIVER_DESC);
4017 MODULE_LICENSE("GPL");