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1 | // SPDX-License-Identifier: GPL-2.0+ | |
2 | /* | |
3 | * Copyright (C) 2015 Microchip Technology | |
4 | */ | |
5 | #include <linux/module.h> | |
6 | #include <linux/netdevice.h> | |
7 | #include <linux/etherdevice.h> | |
8 | #include <linux/ethtool.h> | |
9 | #include <linux/usb.h> | |
10 | #include <linux/crc32.h> | |
11 | #include <linux/signal.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/if_vlan.h> | |
14 | #include <linux/uaccess.h> | |
15 | #include <linux/linkmode.h> | |
16 | #include <linux/list.h> | |
17 | #include <linux/ip.h> | |
18 | #include <linux/ipv6.h> | |
19 | #include <linux/mdio.h> | |
20 | #include <linux/phy.h> | |
21 | #include <net/ip6_checksum.h> | |
22 | #include <net/vxlan.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/irqdomain.h> | |
25 | #include <linux/irq.h> | |
26 | #include <linux/irqchip/chained_irq.h> | |
27 | #include <linux/microchipphy.h> | |
28 | #include <linux/phy_fixed.h> | |
29 | #include <linux/of_mdio.h> | |
30 | #include <linux/of_net.h> | |
31 | #include "lan78xx.h" | |
32 | ||
33 | #define DRIVER_AUTHOR "WOOJUNG HUH <woojung.huh@microchip.com>" | |
34 | #define DRIVER_DESC "LAN78XX USB 3.0 Gigabit Ethernet Devices" | |
35 | #define DRIVER_NAME "lan78xx" | |
36 | ||
37 | #define TX_TIMEOUT_JIFFIES (5 * HZ) | |
38 | #define THROTTLE_JIFFIES (HZ / 8) | |
39 | #define UNLINK_TIMEOUT_MS 3 | |
40 | ||
41 | #define RX_MAX_QUEUE_MEMORY (60 * 1518) | |
42 | ||
43 | #define SS_USB_PKT_SIZE (1024) | |
44 | #define HS_USB_PKT_SIZE (512) | |
45 | #define FS_USB_PKT_SIZE (64) | |
46 | ||
47 | #define MAX_RX_FIFO_SIZE (12 * 1024) | |
48 | #define MAX_TX_FIFO_SIZE (12 * 1024) | |
49 | ||
50 | #define FLOW_THRESHOLD(n) ((((n) + 511) / 512) & 0x7F) | |
51 | #define FLOW_CTRL_THRESHOLD(on, off) ((FLOW_THRESHOLD(on) << 0) | \ | |
52 | (FLOW_THRESHOLD(off) << 8)) | |
53 | ||
54 | /* Flow control turned on when Rx FIFO level rises above this level (bytes) */ | |
55 | #define FLOW_ON_SS 9216 | |
56 | #define FLOW_ON_HS 8704 | |
57 | ||
58 | /* Flow control turned off when Rx FIFO level falls below this level (bytes) */ | |
59 | #define FLOW_OFF_SS 4096 | |
60 | #define FLOW_OFF_HS 1024 | |
61 | ||
62 | #define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE) | |
63 | #define DEFAULT_BULK_IN_DELAY (0x0800) | |
64 | #define MAX_SINGLE_PACKET_SIZE (9000) | |
65 | #define DEFAULT_TX_CSUM_ENABLE (true) | |
66 | #define DEFAULT_RX_CSUM_ENABLE (true) | |
67 | #define DEFAULT_TSO_CSUM_ENABLE (true) | |
68 | #define DEFAULT_VLAN_FILTER_ENABLE (true) | |
69 | #define DEFAULT_VLAN_RX_OFFLOAD (true) | |
70 | #define TX_OVERHEAD (8) | |
71 | #define RXW_PADDING 2 | |
72 | ||
73 | #define LAN78XX_USB_VENDOR_ID (0x0424) | |
74 | #define LAN7800_USB_PRODUCT_ID (0x7800) | |
75 | #define LAN7850_USB_PRODUCT_ID (0x7850) | |
76 | #define LAN7801_USB_PRODUCT_ID (0x7801) | |
77 | #define LAN78XX_EEPROM_MAGIC (0x78A5) | |
78 | #define LAN78XX_OTP_MAGIC (0x78F3) | |
79 | #define AT29M2AF_USB_VENDOR_ID (0x07C9) | |
80 | #define AT29M2AF_USB_PRODUCT_ID (0x0012) | |
81 | ||
82 | #define MII_READ 1 | |
83 | #define MII_WRITE 0 | |
84 | ||
85 | #define EEPROM_INDICATOR (0xA5) | |
86 | #define EEPROM_MAC_OFFSET (0x01) | |
87 | #define MAX_EEPROM_SIZE 512 | |
88 | #define OTP_INDICATOR_1 (0xF3) | |
89 | #define OTP_INDICATOR_2 (0xF7) | |
90 | ||
91 | #define WAKE_ALL (WAKE_PHY | WAKE_UCAST | \ | |
92 | WAKE_MCAST | WAKE_BCAST | \ | |
93 | WAKE_ARP | WAKE_MAGIC) | |
94 | ||
95 | /* USB related defines */ | |
96 | #define BULK_IN_PIPE 1 | |
97 | #define BULK_OUT_PIPE 2 | |
98 | ||
99 | /* default autosuspend delay (mSec)*/ | |
100 | #define DEFAULT_AUTOSUSPEND_DELAY (10 * 1000) | |
101 | ||
102 | /* statistic update interval (mSec) */ | |
103 | #define STAT_UPDATE_TIMER (1 * 1000) | |
104 | ||
105 | /* time to wait for MAC or FCT to stop (jiffies) */ | |
106 | #define HW_DISABLE_TIMEOUT (HZ / 10) | |
107 | ||
108 | /* time to wait between polling MAC or FCT state (ms) */ | |
109 | #define HW_DISABLE_DELAY_MS 1 | |
110 | ||
111 | /* defines interrupts from interrupt EP */ | |
112 | #define MAX_INT_EP (32) | |
113 | #define INT_EP_INTEP (31) | |
114 | #define INT_EP_OTP_WR_DONE (28) | |
115 | #define INT_EP_EEE_TX_LPI_START (26) | |
116 | #define INT_EP_EEE_TX_LPI_STOP (25) | |
117 | #define INT_EP_EEE_RX_LPI (24) | |
118 | #define INT_EP_MAC_RESET_TIMEOUT (23) | |
119 | #define INT_EP_RDFO (22) | |
120 | #define INT_EP_TXE (21) | |
121 | #define INT_EP_USB_STATUS (20) | |
122 | #define INT_EP_TX_DIS (19) | |
123 | #define INT_EP_RX_DIS (18) | |
124 | #define INT_EP_PHY (17) | |
125 | #define INT_EP_DP (16) | |
126 | #define INT_EP_MAC_ERR (15) | |
127 | #define INT_EP_TDFU (14) | |
128 | #define INT_EP_TDFO (13) | |
129 | #define INT_EP_UTX (12) | |
130 | #define INT_EP_GPIO_11 (11) | |
131 | #define INT_EP_GPIO_10 (10) | |
132 | #define INT_EP_GPIO_9 (9) | |
133 | #define INT_EP_GPIO_8 (8) | |
134 | #define INT_EP_GPIO_7 (7) | |
135 | #define INT_EP_GPIO_6 (6) | |
136 | #define INT_EP_GPIO_5 (5) | |
137 | #define INT_EP_GPIO_4 (4) | |
138 | #define INT_EP_GPIO_3 (3) | |
139 | #define INT_EP_GPIO_2 (2) | |
140 | #define INT_EP_GPIO_1 (1) | |
141 | #define INT_EP_GPIO_0 (0) | |
142 | ||
143 | static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = { | |
144 | "RX FCS Errors", | |
145 | "RX Alignment Errors", | |
146 | "Rx Fragment Errors", | |
147 | "RX Jabber Errors", | |
148 | "RX Undersize Frame Errors", | |
149 | "RX Oversize Frame Errors", | |
150 | "RX Dropped Frames", | |
151 | "RX Unicast Byte Count", | |
152 | "RX Broadcast Byte Count", | |
153 | "RX Multicast Byte Count", | |
154 | "RX Unicast Frames", | |
155 | "RX Broadcast Frames", | |
156 | "RX Multicast Frames", | |
157 | "RX Pause Frames", | |
158 | "RX 64 Byte Frames", | |
159 | "RX 65 - 127 Byte Frames", | |
160 | "RX 128 - 255 Byte Frames", | |
161 | "RX 256 - 511 Bytes Frames", | |
162 | "RX 512 - 1023 Byte Frames", | |
163 | "RX 1024 - 1518 Byte Frames", | |
164 | "RX Greater 1518 Byte Frames", | |
165 | "EEE RX LPI Transitions", | |
166 | "EEE RX LPI Time", | |
167 | "TX FCS Errors", | |
168 | "TX Excess Deferral Errors", | |
169 | "TX Carrier Errors", | |
170 | "TX Bad Byte Count", | |
171 | "TX Single Collisions", | |
172 | "TX Multiple Collisions", | |
173 | "TX Excessive Collision", | |
174 | "TX Late Collisions", | |
175 | "TX Unicast Byte Count", | |
176 | "TX Broadcast Byte Count", | |
177 | "TX Multicast Byte Count", | |
178 | "TX Unicast Frames", | |
179 | "TX Broadcast Frames", | |
180 | "TX Multicast Frames", | |
181 | "TX Pause Frames", | |
182 | "TX 64 Byte Frames", | |
183 | "TX 65 - 127 Byte Frames", | |
184 | "TX 128 - 255 Byte Frames", | |
185 | "TX 256 - 511 Bytes Frames", | |
186 | "TX 512 - 1023 Byte Frames", | |
187 | "TX 1024 - 1518 Byte Frames", | |
188 | "TX Greater 1518 Byte Frames", | |
189 | "EEE TX LPI Transitions", | |
190 | "EEE TX LPI Time", | |
191 | }; | |
192 | ||
193 | struct lan78xx_statstage { | |
194 | u32 rx_fcs_errors; | |
195 | u32 rx_alignment_errors; | |
196 | u32 rx_fragment_errors; | |
197 | u32 rx_jabber_errors; | |
198 | u32 rx_undersize_frame_errors; | |
199 | u32 rx_oversize_frame_errors; | |
200 | u32 rx_dropped_frames; | |
201 | u32 rx_unicast_byte_count; | |
202 | u32 rx_broadcast_byte_count; | |
203 | u32 rx_multicast_byte_count; | |
204 | u32 rx_unicast_frames; | |
205 | u32 rx_broadcast_frames; | |
206 | u32 rx_multicast_frames; | |
207 | u32 rx_pause_frames; | |
208 | u32 rx_64_byte_frames; | |
209 | u32 rx_65_127_byte_frames; | |
210 | u32 rx_128_255_byte_frames; | |
211 | u32 rx_256_511_bytes_frames; | |
212 | u32 rx_512_1023_byte_frames; | |
213 | u32 rx_1024_1518_byte_frames; | |
214 | u32 rx_greater_1518_byte_frames; | |
215 | u32 eee_rx_lpi_transitions; | |
216 | u32 eee_rx_lpi_time; | |
217 | u32 tx_fcs_errors; | |
218 | u32 tx_excess_deferral_errors; | |
219 | u32 tx_carrier_errors; | |
220 | u32 tx_bad_byte_count; | |
221 | u32 tx_single_collisions; | |
222 | u32 tx_multiple_collisions; | |
223 | u32 tx_excessive_collision; | |
224 | u32 tx_late_collisions; | |
225 | u32 tx_unicast_byte_count; | |
226 | u32 tx_broadcast_byte_count; | |
227 | u32 tx_multicast_byte_count; | |
228 | u32 tx_unicast_frames; | |
229 | u32 tx_broadcast_frames; | |
230 | u32 tx_multicast_frames; | |
231 | u32 tx_pause_frames; | |
232 | u32 tx_64_byte_frames; | |
233 | u32 tx_65_127_byte_frames; | |
234 | u32 tx_128_255_byte_frames; | |
235 | u32 tx_256_511_bytes_frames; | |
236 | u32 tx_512_1023_byte_frames; | |
237 | u32 tx_1024_1518_byte_frames; | |
238 | u32 tx_greater_1518_byte_frames; | |
239 | u32 eee_tx_lpi_transitions; | |
240 | u32 eee_tx_lpi_time; | |
241 | }; | |
242 | ||
243 | struct lan78xx_statstage64 { | |
244 | u64 rx_fcs_errors; | |
245 | u64 rx_alignment_errors; | |
246 | u64 rx_fragment_errors; | |
247 | u64 rx_jabber_errors; | |
248 | u64 rx_undersize_frame_errors; | |
249 | u64 rx_oversize_frame_errors; | |
250 | u64 rx_dropped_frames; | |
251 | u64 rx_unicast_byte_count; | |
252 | u64 rx_broadcast_byte_count; | |
253 | u64 rx_multicast_byte_count; | |
254 | u64 rx_unicast_frames; | |
255 | u64 rx_broadcast_frames; | |
256 | u64 rx_multicast_frames; | |
257 | u64 rx_pause_frames; | |
258 | u64 rx_64_byte_frames; | |
259 | u64 rx_65_127_byte_frames; | |
260 | u64 rx_128_255_byte_frames; | |
261 | u64 rx_256_511_bytes_frames; | |
262 | u64 rx_512_1023_byte_frames; | |
263 | u64 rx_1024_1518_byte_frames; | |
264 | u64 rx_greater_1518_byte_frames; | |
265 | u64 eee_rx_lpi_transitions; | |
266 | u64 eee_rx_lpi_time; | |
267 | u64 tx_fcs_errors; | |
268 | u64 tx_excess_deferral_errors; | |
269 | u64 tx_carrier_errors; | |
270 | u64 tx_bad_byte_count; | |
271 | u64 tx_single_collisions; | |
272 | u64 tx_multiple_collisions; | |
273 | u64 tx_excessive_collision; | |
274 | u64 tx_late_collisions; | |
275 | u64 tx_unicast_byte_count; | |
276 | u64 tx_broadcast_byte_count; | |
277 | u64 tx_multicast_byte_count; | |
278 | u64 tx_unicast_frames; | |
279 | u64 tx_broadcast_frames; | |
280 | u64 tx_multicast_frames; | |
281 | u64 tx_pause_frames; | |
282 | u64 tx_64_byte_frames; | |
283 | u64 tx_65_127_byte_frames; | |
284 | u64 tx_128_255_byte_frames; | |
285 | u64 tx_256_511_bytes_frames; | |
286 | u64 tx_512_1023_byte_frames; | |
287 | u64 tx_1024_1518_byte_frames; | |
288 | u64 tx_greater_1518_byte_frames; | |
289 | u64 eee_tx_lpi_transitions; | |
290 | u64 eee_tx_lpi_time; | |
291 | }; | |
292 | ||
293 | static u32 lan78xx_regs[] = { | |
294 | ID_REV, | |
295 | INT_STS, | |
296 | HW_CFG, | |
297 | PMT_CTL, | |
298 | E2P_CMD, | |
299 | E2P_DATA, | |
300 | USB_STATUS, | |
301 | VLAN_TYPE, | |
302 | MAC_CR, | |
303 | MAC_RX, | |
304 | MAC_TX, | |
305 | FLOW, | |
306 | ERR_STS, | |
307 | MII_ACC, | |
308 | MII_DATA, | |
309 | EEE_TX_LPI_REQ_DLY, | |
310 | EEE_TW_TX_SYS, | |
311 | EEE_TX_LPI_REM_DLY, | |
312 | WUCSR | |
313 | }; | |
314 | ||
315 | #define PHY_REG_SIZE (32 * sizeof(u32)) | |
316 | ||
317 | struct lan78xx_net; | |
318 | ||
319 | struct lan78xx_priv { | |
320 | struct lan78xx_net *dev; | |
321 | u32 rfe_ctl; | |
322 | u32 mchash_table[DP_SEL_VHF_HASH_LEN]; /* multicast hash table */ | |
323 | u32 pfilter_table[NUM_OF_MAF][2]; /* perfect filter table */ | |
324 | u32 vlan_table[DP_SEL_VHF_VLAN_LEN]; | |
325 | struct mutex dataport_mutex; /* for dataport access */ | |
326 | spinlock_t rfe_ctl_lock; /* for rfe register access */ | |
327 | struct work_struct set_multicast; | |
328 | struct work_struct set_vlan; | |
329 | u32 wol; | |
330 | }; | |
331 | ||
332 | enum skb_state { | |
333 | illegal = 0, | |
334 | tx_start, | |
335 | tx_done, | |
336 | rx_start, | |
337 | rx_done, | |
338 | rx_cleanup, | |
339 | unlink_start | |
340 | }; | |
341 | ||
342 | struct skb_data { /* skb->cb is one of these */ | |
343 | struct urb *urb; | |
344 | struct lan78xx_net *dev; | |
345 | enum skb_state state; | |
346 | size_t length; | |
347 | int num_of_packet; | |
348 | }; | |
349 | ||
350 | struct usb_context { | |
351 | struct usb_ctrlrequest req; | |
352 | struct lan78xx_net *dev; | |
353 | }; | |
354 | ||
355 | #define EVENT_TX_HALT 0 | |
356 | #define EVENT_RX_HALT 1 | |
357 | #define EVENT_RX_MEMORY 2 | |
358 | #define EVENT_STS_SPLIT 3 | |
359 | #define EVENT_LINK_RESET 4 | |
360 | #define EVENT_RX_PAUSED 5 | |
361 | #define EVENT_DEV_WAKING 6 | |
362 | #define EVENT_DEV_ASLEEP 7 | |
363 | #define EVENT_DEV_OPEN 8 | |
364 | #define EVENT_STAT_UPDATE 9 | |
365 | #define EVENT_DEV_DISCONNECT 10 | |
366 | ||
367 | struct statstage { | |
368 | struct mutex access_lock; /* for stats access */ | |
369 | struct lan78xx_statstage saved; | |
370 | struct lan78xx_statstage rollover_count; | |
371 | struct lan78xx_statstage rollover_max; | |
372 | struct lan78xx_statstage64 curr_stat; | |
373 | }; | |
374 | ||
375 | struct irq_domain_data { | |
376 | struct irq_domain *irqdomain; | |
377 | unsigned int phyirq; | |
378 | struct irq_chip *irqchip; | |
379 | irq_flow_handler_t irq_handler; | |
380 | u32 irqenable; | |
381 | struct mutex irq_lock; /* for irq bus access */ | |
382 | }; | |
383 | ||
384 | struct lan78xx_net { | |
385 | struct net_device *net; | |
386 | struct usb_device *udev; | |
387 | struct usb_interface *intf; | |
388 | void *driver_priv; | |
389 | ||
390 | int rx_qlen; | |
391 | int tx_qlen; | |
392 | struct sk_buff_head rxq; | |
393 | struct sk_buff_head txq; | |
394 | struct sk_buff_head done; | |
395 | struct sk_buff_head txq_pend; | |
396 | ||
397 | struct tasklet_struct bh; | |
398 | struct delayed_work wq; | |
399 | ||
400 | int msg_enable; | |
401 | ||
402 | struct urb *urb_intr; | |
403 | struct usb_anchor deferred; | |
404 | ||
405 | struct mutex dev_mutex; /* serialise open/stop wrt suspend/resume */ | |
406 | struct mutex phy_mutex; /* for phy access */ | |
407 | unsigned int pipe_in, pipe_out, pipe_intr; | |
408 | ||
409 | u32 hard_mtu; /* count any extra framing */ | |
410 | size_t rx_urb_size; /* size for rx urbs */ | |
411 | ||
412 | unsigned long flags; | |
413 | ||
414 | wait_queue_head_t *wait; | |
415 | unsigned char suspend_count; | |
416 | ||
417 | unsigned int maxpacket; | |
418 | struct timer_list stat_monitor; | |
419 | ||
420 | unsigned long data[5]; | |
421 | ||
422 | int link_on; | |
423 | u8 mdix_ctrl; | |
424 | ||
425 | u32 chipid; | |
426 | u32 chiprev; | |
427 | struct mii_bus *mdiobus; | |
428 | phy_interface_t interface; | |
429 | ||
430 | int fc_autoneg; | |
431 | u8 fc_request_control; | |
432 | ||
433 | int delta; | |
434 | struct statstage stats; | |
435 | ||
436 | struct irq_domain_data domain_data; | |
437 | }; | |
438 | ||
439 | /* define external phy id */ | |
440 | #define PHY_LAN8835 (0x0007C130) | |
441 | #define PHY_KSZ9031RNX (0x00221620) | |
442 | ||
443 | /* use ethtool to change the level for any given device */ | |
444 | static int msg_level = -1; | |
445 | module_param(msg_level, int, 0); | |
446 | MODULE_PARM_DESC(msg_level, "Override default message level"); | |
447 | ||
448 | static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) | |
449 | { | |
450 | u32 *buf; | |
451 | int ret; | |
452 | ||
453 | if (test_bit(EVENT_DEV_DISCONNECT, &dev->flags)) | |
454 | return -ENODEV; | |
455 | ||
456 | buf = kmalloc(sizeof(u32), GFP_KERNEL); | |
457 | if (!buf) | |
458 | return -ENOMEM; | |
459 | ||
460 | ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), | |
461 | USB_VENDOR_REQUEST_READ_REGISTER, | |
462 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
463 | 0, index, buf, 4, USB_CTRL_GET_TIMEOUT); | |
464 | if (likely(ret >= 0)) { | |
465 | le32_to_cpus(buf); | |
466 | *data = *buf; | |
467 | } else if (net_ratelimit()) { | |
468 | netdev_warn(dev->net, | |
469 | "Failed to read register index 0x%08x. ret = %d", | |
470 | index, ret); | |
471 | } | |
472 | ||
473 | kfree(buf); | |
474 | ||
475 | return ret; | |
476 | } | |
477 | ||
478 | static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data) | |
479 | { | |
480 | u32 *buf; | |
481 | int ret; | |
482 | ||
483 | if (test_bit(EVENT_DEV_DISCONNECT, &dev->flags)) | |
484 | return -ENODEV; | |
485 | ||
486 | buf = kmalloc(sizeof(u32), GFP_KERNEL); | |
487 | if (!buf) | |
488 | return -ENOMEM; | |
489 | ||
490 | *buf = data; | |
491 | cpu_to_le32s(buf); | |
492 | ||
493 | ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), | |
494 | USB_VENDOR_REQUEST_WRITE_REGISTER, | |
495 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
496 | 0, index, buf, 4, USB_CTRL_SET_TIMEOUT); | |
497 | if (unlikely(ret < 0) && | |
498 | net_ratelimit()) { | |
499 | netdev_warn(dev->net, | |
500 | "Failed to write register index 0x%08x. ret = %d", | |
501 | index, ret); | |
502 | } | |
503 | ||
504 | kfree(buf); | |
505 | ||
506 | return ret; | |
507 | } | |
508 | ||
509 | static int lan78xx_update_reg(struct lan78xx_net *dev, u32 reg, u32 mask, | |
510 | u32 data) | |
511 | { | |
512 | int ret; | |
513 | u32 buf; | |
514 | ||
515 | ret = lan78xx_read_reg(dev, reg, &buf); | |
516 | if (ret < 0) | |
517 | return ret; | |
518 | ||
519 | buf &= ~mask; | |
520 | buf |= (mask & data); | |
521 | ||
522 | ret = lan78xx_write_reg(dev, reg, buf); | |
523 | if (ret < 0) | |
524 | return ret; | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
529 | static int lan78xx_read_stats(struct lan78xx_net *dev, | |
530 | struct lan78xx_statstage *data) | |
531 | { | |
532 | int ret = 0; | |
533 | int i; | |
534 | struct lan78xx_statstage *stats; | |
535 | u32 *src; | |
536 | u32 *dst; | |
537 | ||
538 | stats = kmalloc(sizeof(*stats), GFP_KERNEL); | |
539 | if (!stats) | |
540 | return -ENOMEM; | |
541 | ||
542 | ret = usb_control_msg(dev->udev, | |
543 | usb_rcvctrlpipe(dev->udev, 0), | |
544 | USB_VENDOR_REQUEST_GET_STATS, | |
545 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
546 | 0, | |
547 | 0, | |
548 | (void *)stats, | |
549 | sizeof(*stats), | |
550 | USB_CTRL_SET_TIMEOUT); | |
551 | if (likely(ret >= 0)) { | |
552 | src = (u32 *)stats; | |
553 | dst = (u32 *)data; | |
554 | for (i = 0; i < sizeof(*stats) / sizeof(u32); i++) { | |
555 | le32_to_cpus(&src[i]); | |
556 | dst[i] = src[i]; | |
557 | } | |
558 | } else { | |
559 | netdev_warn(dev->net, | |
560 | "Failed to read stat ret = %d", ret); | |
561 | } | |
562 | ||
563 | kfree(stats); | |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
568 | #define check_counter_rollover(struct1, dev_stats, member) \ | |
569 | do { \ | |
570 | if ((struct1)->member < (dev_stats).saved.member) \ | |
571 | (dev_stats).rollover_count.member++; \ | |
572 | } while (0) | |
573 | ||
574 | static void lan78xx_check_stat_rollover(struct lan78xx_net *dev, | |
575 | struct lan78xx_statstage *stats) | |
576 | { | |
577 | check_counter_rollover(stats, dev->stats, rx_fcs_errors); | |
578 | check_counter_rollover(stats, dev->stats, rx_alignment_errors); | |
579 | check_counter_rollover(stats, dev->stats, rx_fragment_errors); | |
580 | check_counter_rollover(stats, dev->stats, rx_jabber_errors); | |
581 | check_counter_rollover(stats, dev->stats, rx_undersize_frame_errors); | |
582 | check_counter_rollover(stats, dev->stats, rx_oversize_frame_errors); | |
583 | check_counter_rollover(stats, dev->stats, rx_dropped_frames); | |
584 | check_counter_rollover(stats, dev->stats, rx_unicast_byte_count); | |
585 | check_counter_rollover(stats, dev->stats, rx_broadcast_byte_count); | |
586 | check_counter_rollover(stats, dev->stats, rx_multicast_byte_count); | |
587 | check_counter_rollover(stats, dev->stats, rx_unicast_frames); | |
588 | check_counter_rollover(stats, dev->stats, rx_broadcast_frames); | |
589 | check_counter_rollover(stats, dev->stats, rx_multicast_frames); | |
590 | check_counter_rollover(stats, dev->stats, rx_pause_frames); | |
591 | check_counter_rollover(stats, dev->stats, rx_64_byte_frames); | |
592 | check_counter_rollover(stats, dev->stats, rx_65_127_byte_frames); | |
593 | check_counter_rollover(stats, dev->stats, rx_128_255_byte_frames); | |
594 | check_counter_rollover(stats, dev->stats, rx_256_511_bytes_frames); | |
595 | check_counter_rollover(stats, dev->stats, rx_512_1023_byte_frames); | |
596 | check_counter_rollover(stats, dev->stats, rx_1024_1518_byte_frames); | |
597 | check_counter_rollover(stats, dev->stats, rx_greater_1518_byte_frames); | |
598 | check_counter_rollover(stats, dev->stats, eee_rx_lpi_transitions); | |
599 | check_counter_rollover(stats, dev->stats, eee_rx_lpi_time); | |
600 | check_counter_rollover(stats, dev->stats, tx_fcs_errors); | |
601 | check_counter_rollover(stats, dev->stats, tx_excess_deferral_errors); | |
602 | check_counter_rollover(stats, dev->stats, tx_carrier_errors); | |
603 | check_counter_rollover(stats, dev->stats, tx_bad_byte_count); | |
604 | check_counter_rollover(stats, dev->stats, tx_single_collisions); | |
605 | check_counter_rollover(stats, dev->stats, tx_multiple_collisions); | |
606 | check_counter_rollover(stats, dev->stats, tx_excessive_collision); | |
607 | check_counter_rollover(stats, dev->stats, tx_late_collisions); | |
608 | check_counter_rollover(stats, dev->stats, tx_unicast_byte_count); | |
609 | check_counter_rollover(stats, dev->stats, tx_broadcast_byte_count); | |
610 | check_counter_rollover(stats, dev->stats, tx_multicast_byte_count); | |
611 | check_counter_rollover(stats, dev->stats, tx_unicast_frames); | |
612 | check_counter_rollover(stats, dev->stats, tx_broadcast_frames); | |
613 | check_counter_rollover(stats, dev->stats, tx_multicast_frames); | |
614 | check_counter_rollover(stats, dev->stats, tx_pause_frames); | |
615 | check_counter_rollover(stats, dev->stats, tx_64_byte_frames); | |
616 | check_counter_rollover(stats, dev->stats, tx_65_127_byte_frames); | |
617 | check_counter_rollover(stats, dev->stats, tx_128_255_byte_frames); | |
618 | check_counter_rollover(stats, dev->stats, tx_256_511_bytes_frames); | |
619 | check_counter_rollover(stats, dev->stats, tx_512_1023_byte_frames); | |
620 | check_counter_rollover(stats, dev->stats, tx_1024_1518_byte_frames); | |
621 | check_counter_rollover(stats, dev->stats, tx_greater_1518_byte_frames); | |
622 | check_counter_rollover(stats, dev->stats, eee_tx_lpi_transitions); | |
623 | check_counter_rollover(stats, dev->stats, eee_tx_lpi_time); | |
624 | ||
625 | memcpy(&dev->stats.saved, stats, sizeof(struct lan78xx_statstage)); | |
626 | } | |
627 | ||
628 | static void lan78xx_update_stats(struct lan78xx_net *dev) | |
629 | { | |
630 | u32 *p, *count, *max; | |
631 | u64 *data; | |
632 | int i; | |
633 | struct lan78xx_statstage lan78xx_stats; | |
634 | ||
635 | if (usb_autopm_get_interface(dev->intf) < 0) | |
636 | return; | |
637 | ||
638 | p = (u32 *)&lan78xx_stats; | |
639 | count = (u32 *)&dev->stats.rollover_count; | |
640 | max = (u32 *)&dev->stats.rollover_max; | |
641 | data = (u64 *)&dev->stats.curr_stat; | |
642 | ||
643 | mutex_lock(&dev->stats.access_lock); | |
644 | ||
645 | if (lan78xx_read_stats(dev, &lan78xx_stats) > 0) | |
646 | lan78xx_check_stat_rollover(dev, &lan78xx_stats); | |
647 | ||
648 | for (i = 0; i < (sizeof(lan78xx_stats) / (sizeof(u32))); i++) | |
649 | data[i] = (u64)p[i] + ((u64)count[i] * ((u64)max[i] + 1)); | |
650 | ||
651 | mutex_unlock(&dev->stats.access_lock); | |
652 | ||
653 | usb_autopm_put_interface(dev->intf); | |
654 | } | |
655 | ||
656 | /* Loop until the read is completed with timeout called with phy_mutex held */ | |
657 | static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev) | |
658 | { | |
659 | unsigned long start_time = jiffies; | |
660 | u32 val; | |
661 | int ret; | |
662 | ||
663 | do { | |
664 | ret = lan78xx_read_reg(dev, MII_ACC, &val); | |
665 | if (unlikely(ret < 0)) | |
666 | return -EIO; | |
667 | ||
668 | if (!(val & MII_ACC_MII_BUSY_)) | |
669 | return 0; | |
670 | } while (!time_after(jiffies, start_time + HZ)); | |
671 | ||
672 | return -EIO; | |
673 | } | |
674 | ||
675 | static inline u32 mii_access(int id, int index, int read) | |
676 | { | |
677 | u32 ret; | |
678 | ||
679 | ret = ((u32)id << MII_ACC_PHY_ADDR_SHIFT_) & MII_ACC_PHY_ADDR_MASK_; | |
680 | ret |= ((u32)index << MII_ACC_MIIRINDA_SHIFT_) & MII_ACC_MIIRINDA_MASK_; | |
681 | if (read) | |
682 | ret |= MII_ACC_MII_READ_; | |
683 | else | |
684 | ret |= MII_ACC_MII_WRITE_; | |
685 | ret |= MII_ACC_MII_BUSY_; | |
686 | ||
687 | return ret; | |
688 | } | |
689 | ||
690 | static int lan78xx_wait_eeprom(struct lan78xx_net *dev) | |
691 | { | |
692 | unsigned long start_time = jiffies; | |
693 | u32 val; | |
694 | int ret; | |
695 | ||
696 | do { | |
697 | ret = lan78xx_read_reg(dev, E2P_CMD, &val); | |
698 | if (unlikely(ret < 0)) | |
699 | return -EIO; | |
700 | ||
701 | if (!(val & E2P_CMD_EPC_BUSY_) || | |
702 | (val & E2P_CMD_EPC_TIMEOUT_)) | |
703 | break; | |
704 | usleep_range(40, 100); | |
705 | } while (!time_after(jiffies, start_time + HZ)); | |
706 | ||
707 | if (val & (E2P_CMD_EPC_TIMEOUT_ | E2P_CMD_EPC_BUSY_)) { | |
708 | netdev_warn(dev->net, "EEPROM read operation timeout"); | |
709 | return -EIO; | |
710 | } | |
711 | ||
712 | return 0; | |
713 | } | |
714 | ||
715 | static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev) | |
716 | { | |
717 | unsigned long start_time = jiffies; | |
718 | u32 val; | |
719 | int ret; | |
720 | ||
721 | do { | |
722 | ret = lan78xx_read_reg(dev, E2P_CMD, &val); | |
723 | if (unlikely(ret < 0)) | |
724 | return -EIO; | |
725 | ||
726 | if (!(val & E2P_CMD_EPC_BUSY_)) | |
727 | return 0; | |
728 | ||
729 | usleep_range(40, 100); | |
730 | } while (!time_after(jiffies, start_time + HZ)); | |
731 | ||
732 | netdev_warn(dev->net, "EEPROM is busy"); | |
733 | return -EIO; | |
734 | } | |
735 | ||
736 | static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset, | |
737 | u32 length, u8 *data) | |
738 | { | |
739 | u32 val; | |
740 | u32 saved; | |
741 | int i, ret; | |
742 | int retval; | |
743 | ||
744 | /* depends on chip, some EEPROM pins are muxed with LED function. | |
745 | * disable & restore LED function to access EEPROM. | |
746 | */ | |
747 | ret = lan78xx_read_reg(dev, HW_CFG, &val); | |
748 | saved = val; | |
749 | if (dev->chipid == ID_REV_CHIP_ID_7800_) { | |
750 | val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); | |
751 | ret = lan78xx_write_reg(dev, HW_CFG, val); | |
752 | } | |
753 | ||
754 | retval = lan78xx_eeprom_confirm_not_busy(dev); | |
755 | if (retval) | |
756 | return retval; | |
757 | ||
758 | for (i = 0; i < length; i++) { | |
759 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_READ_; | |
760 | val |= (offset & E2P_CMD_EPC_ADDR_MASK_); | |
761 | ret = lan78xx_write_reg(dev, E2P_CMD, val); | |
762 | if (unlikely(ret < 0)) { | |
763 | retval = -EIO; | |
764 | goto exit; | |
765 | } | |
766 | ||
767 | retval = lan78xx_wait_eeprom(dev); | |
768 | if (retval < 0) | |
769 | goto exit; | |
770 | ||
771 | ret = lan78xx_read_reg(dev, E2P_DATA, &val); | |
772 | if (unlikely(ret < 0)) { | |
773 | retval = -EIO; | |
774 | goto exit; | |
775 | } | |
776 | ||
777 | data[i] = val & 0xFF; | |
778 | offset++; | |
779 | } | |
780 | ||
781 | retval = 0; | |
782 | exit: | |
783 | if (dev->chipid == ID_REV_CHIP_ID_7800_) | |
784 | ret = lan78xx_write_reg(dev, HW_CFG, saved); | |
785 | ||
786 | return retval; | |
787 | } | |
788 | ||
789 | static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset, | |
790 | u32 length, u8 *data) | |
791 | { | |
792 | u8 sig; | |
793 | int ret; | |
794 | ||
795 | ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig); | |
796 | if ((ret == 0) && (sig == EEPROM_INDICATOR)) | |
797 | ret = lan78xx_read_raw_eeprom(dev, offset, length, data); | |
798 | else | |
799 | ret = -EINVAL; | |
800 | ||
801 | return ret; | |
802 | } | |
803 | ||
804 | static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset, | |
805 | u32 length, u8 *data) | |
806 | { | |
807 | u32 val; | |
808 | u32 saved; | |
809 | int i, ret; | |
810 | int retval; | |
811 | ||
812 | /* depends on chip, some EEPROM pins are muxed with LED function. | |
813 | * disable & restore LED function to access EEPROM. | |
814 | */ | |
815 | ret = lan78xx_read_reg(dev, HW_CFG, &val); | |
816 | saved = val; | |
817 | if (dev->chipid == ID_REV_CHIP_ID_7800_) { | |
818 | val &= ~(HW_CFG_LED1_EN_ | HW_CFG_LED0_EN_); | |
819 | ret = lan78xx_write_reg(dev, HW_CFG, val); | |
820 | } | |
821 | ||
822 | retval = lan78xx_eeprom_confirm_not_busy(dev); | |
823 | if (retval) | |
824 | goto exit; | |
825 | ||
826 | /* Issue write/erase enable command */ | |
827 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_EWEN_; | |
828 | ret = lan78xx_write_reg(dev, E2P_CMD, val); | |
829 | if (unlikely(ret < 0)) { | |
830 | retval = -EIO; | |
831 | goto exit; | |
832 | } | |
833 | ||
834 | retval = lan78xx_wait_eeprom(dev); | |
835 | if (retval < 0) | |
836 | goto exit; | |
837 | ||
838 | for (i = 0; i < length; i++) { | |
839 | /* Fill data register */ | |
840 | val = data[i]; | |
841 | ret = lan78xx_write_reg(dev, E2P_DATA, val); | |
842 | if (ret < 0) { | |
843 | retval = -EIO; | |
844 | goto exit; | |
845 | } | |
846 | ||
847 | /* Send "write" command */ | |
848 | val = E2P_CMD_EPC_BUSY_ | E2P_CMD_EPC_CMD_WRITE_; | |
849 | val |= (offset & E2P_CMD_EPC_ADDR_MASK_); | |
850 | ret = lan78xx_write_reg(dev, E2P_CMD, val); | |
851 | if (ret < 0) { | |
852 | retval = -EIO; | |
853 | goto exit; | |
854 | } | |
855 | ||
856 | retval = lan78xx_wait_eeprom(dev); | |
857 | if (retval < 0) | |
858 | goto exit; | |
859 | ||
860 | offset++; | |
861 | } | |
862 | ||
863 | retval = 0; | |
864 | exit: | |
865 | if (dev->chipid == ID_REV_CHIP_ID_7800_) | |
866 | ret = lan78xx_write_reg(dev, HW_CFG, saved); | |
867 | ||
868 | return retval; | |
869 | } | |
870 | ||
871 | static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset, | |
872 | u32 length, u8 *data) | |
873 | { | |
874 | int i; | |
875 | u32 buf; | |
876 | unsigned long timeout; | |
877 | ||
878 | lan78xx_read_reg(dev, OTP_PWR_DN, &buf); | |
879 | ||
880 | if (buf & OTP_PWR_DN_PWRDN_N_) { | |
881 | /* clear it and wait to be cleared */ | |
882 | lan78xx_write_reg(dev, OTP_PWR_DN, 0); | |
883 | ||
884 | timeout = jiffies + HZ; | |
885 | do { | |
886 | usleep_range(1, 10); | |
887 | lan78xx_read_reg(dev, OTP_PWR_DN, &buf); | |
888 | if (time_after(jiffies, timeout)) { | |
889 | netdev_warn(dev->net, | |
890 | "timeout on OTP_PWR_DN"); | |
891 | return -EIO; | |
892 | } | |
893 | } while (buf & OTP_PWR_DN_PWRDN_N_); | |
894 | } | |
895 | ||
896 | for (i = 0; i < length; i++) { | |
897 | lan78xx_write_reg(dev, OTP_ADDR1, | |
898 | ((offset + i) >> 8) & OTP_ADDR1_15_11); | |
899 | lan78xx_write_reg(dev, OTP_ADDR2, | |
900 | ((offset + i) & OTP_ADDR2_10_3)); | |
901 | ||
902 | lan78xx_write_reg(dev, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_); | |
903 | lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); | |
904 | ||
905 | timeout = jiffies + HZ; | |
906 | do { | |
907 | udelay(1); | |
908 | lan78xx_read_reg(dev, OTP_STATUS, &buf); | |
909 | if (time_after(jiffies, timeout)) { | |
910 | netdev_warn(dev->net, | |
911 | "timeout on OTP_STATUS"); | |
912 | return -EIO; | |
913 | } | |
914 | } while (buf & OTP_STATUS_BUSY_); | |
915 | ||
916 | lan78xx_read_reg(dev, OTP_RD_DATA, &buf); | |
917 | ||
918 | data[i] = (u8)(buf & 0xFF); | |
919 | } | |
920 | ||
921 | return 0; | |
922 | } | |
923 | ||
924 | static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset, | |
925 | u32 length, u8 *data) | |
926 | { | |
927 | int i; | |
928 | u32 buf; | |
929 | unsigned long timeout; | |
930 | ||
931 | lan78xx_read_reg(dev, OTP_PWR_DN, &buf); | |
932 | ||
933 | if (buf & OTP_PWR_DN_PWRDN_N_) { | |
934 | /* clear it and wait to be cleared */ | |
935 | lan78xx_write_reg(dev, OTP_PWR_DN, 0); | |
936 | ||
937 | timeout = jiffies + HZ; | |
938 | do { | |
939 | udelay(1); | |
940 | lan78xx_read_reg(dev, OTP_PWR_DN, &buf); | |
941 | if (time_after(jiffies, timeout)) { | |
942 | netdev_warn(dev->net, | |
943 | "timeout on OTP_PWR_DN completion"); | |
944 | return -EIO; | |
945 | } | |
946 | } while (buf & OTP_PWR_DN_PWRDN_N_); | |
947 | } | |
948 | ||
949 | /* set to BYTE program mode */ | |
950 | lan78xx_write_reg(dev, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_); | |
951 | ||
952 | for (i = 0; i < length; i++) { | |
953 | lan78xx_write_reg(dev, OTP_ADDR1, | |
954 | ((offset + i) >> 8) & OTP_ADDR1_15_11); | |
955 | lan78xx_write_reg(dev, OTP_ADDR2, | |
956 | ((offset + i) & OTP_ADDR2_10_3)); | |
957 | lan78xx_write_reg(dev, OTP_PRGM_DATA, data[i]); | |
958 | lan78xx_write_reg(dev, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_); | |
959 | lan78xx_write_reg(dev, OTP_CMD_GO, OTP_CMD_GO_GO_); | |
960 | ||
961 | timeout = jiffies + HZ; | |
962 | do { | |
963 | udelay(1); | |
964 | lan78xx_read_reg(dev, OTP_STATUS, &buf); | |
965 | if (time_after(jiffies, timeout)) { | |
966 | netdev_warn(dev->net, | |
967 | "Timeout on OTP_STATUS completion"); | |
968 | return -EIO; | |
969 | } | |
970 | } while (buf & OTP_STATUS_BUSY_); | |
971 | } | |
972 | ||
973 | return 0; | |
974 | } | |
975 | ||
976 | static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset, | |
977 | u32 length, u8 *data) | |
978 | { | |
979 | u8 sig; | |
980 | int ret; | |
981 | ||
982 | ret = lan78xx_read_raw_otp(dev, 0, 1, &sig); | |
983 | ||
984 | if (ret == 0) { | |
985 | if (sig == OTP_INDICATOR_2) | |
986 | offset += 0x100; | |
987 | else if (sig != OTP_INDICATOR_1) | |
988 | ret = -EINVAL; | |
989 | if (!ret) | |
990 | ret = lan78xx_read_raw_otp(dev, offset, length, data); | |
991 | } | |
992 | ||
993 | return ret; | |
994 | } | |
995 | ||
996 | static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev) | |
997 | { | |
998 | int i, ret; | |
999 | ||
1000 | for (i = 0; i < 100; i++) { | |
1001 | u32 dp_sel; | |
1002 | ||
1003 | ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); | |
1004 | if (unlikely(ret < 0)) | |
1005 | return -EIO; | |
1006 | ||
1007 | if (dp_sel & DP_SEL_DPRDY_) | |
1008 | return 0; | |
1009 | ||
1010 | usleep_range(40, 100); | |
1011 | } | |
1012 | ||
1013 | netdev_warn(dev->net, "%s timed out", __func__); | |
1014 | ||
1015 | return -EIO; | |
1016 | } | |
1017 | ||
1018 | static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select, | |
1019 | u32 addr, u32 length, u32 *buf) | |
1020 | { | |
1021 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1022 | u32 dp_sel; | |
1023 | int i, ret; | |
1024 | ||
1025 | if (usb_autopm_get_interface(dev->intf) < 0) | |
1026 | return 0; | |
1027 | ||
1028 | mutex_lock(&pdata->dataport_mutex); | |
1029 | ||
1030 | ret = lan78xx_dataport_wait_not_busy(dev); | |
1031 | if (ret < 0) | |
1032 | goto done; | |
1033 | ||
1034 | ret = lan78xx_read_reg(dev, DP_SEL, &dp_sel); | |
1035 | ||
1036 | dp_sel &= ~DP_SEL_RSEL_MASK_; | |
1037 | dp_sel |= ram_select; | |
1038 | ret = lan78xx_write_reg(dev, DP_SEL, dp_sel); | |
1039 | ||
1040 | for (i = 0; i < length; i++) { | |
1041 | ret = lan78xx_write_reg(dev, DP_ADDR, addr + i); | |
1042 | ||
1043 | ret = lan78xx_write_reg(dev, DP_DATA, buf[i]); | |
1044 | ||
1045 | ret = lan78xx_write_reg(dev, DP_CMD, DP_CMD_WRITE_); | |
1046 | ||
1047 | ret = lan78xx_dataport_wait_not_busy(dev); | |
1048 | if (ret < 0) | |
1049 | goto done; | |
1050 | } | |
1051 | ||
1052 | done: | |
1053 | mutex_unlock(&pdata->dataport_mutex); | |
1054 | usb_autopm_put_interface(dev->intf); | |
1055 | ||
1056 | return ret; | |
1057 | } | |
1058 | ||
1059 | static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata, | |
1060 | int index, u8 addr[ETH_ALEN]) | |
1061 | { | |
1062 | u32 temp; | |
1063 | ||
1064 | if ((pdata) && (index > 0) && (index < NUM_OF_MAF)) { | |
1065 | temp = addr[3]; | |
1066 | temp = addr[2] | (temp << 8); | |
1067 | temp = addr[1] | (temp << 8); | |
1068 | temp = addr[0] | (temp << 8); | |
1069 | pdata->pfilter_table[index][1] = temp; | |
1070 | temp = addr[5]; | |
1071 | temp = addr[4] | (temp << 8); | |
1072 | temp |= MAF_HI_VALID_ | MAF_HI_TYPE_DST_; | |
1073 | pdata->pfilter_table[index][0] = temp; | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | /* returns hash bit number for given MAC address */ | |
1078 | static inline u32 lan78xx_hash(char addr[ETH_ALEN]) | |
1079 | { | |
1080 | return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff; | |
1081 | } | |
1082 | ||
1083 | static void lan78xx_deferred_multicast_write(struct work_struct *param) | |
1084 | { | |
1085 | struct lan78xx_priv *pdata = | |
1086 | container_of(param, struct lan78xx_priv, set_multicast); | |
1087 | struct lan78xx_net *dev = pdata->dev; | |
1088 | int i; | |
1089 | ||
1090 | netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n", | |
1091 | pdata->rfe_ctl); | |
1092 | ||
1093 | lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, DP_SEL_VHF_VLAN_LEN, | |
1094 | DP_SEL_VHF_HASH_LEN, pdata->mchash_table); | |
1095 | ||
1096 | for (i = 1; i < NUM_OF_MAF; i++) { | |
1097 | lan78xx_write_reg(dev, MAF_HI(i), 0); | |
1098 | lan78xx_write_reg(dev, MAF_LO(i), | |
1099 | pdata->pfilter_table[i][1]); | |
1100 | lan78xx_write_reg(dev, MAF_HI(i), | |
1101 | pdata->pfilter_table[i][0]); | |
1102 | } | |
1103 | ||
1104 | lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); | |
1105 | } | |
1106 | ||
1107 | static void lan78xx_set_multicast(struct net_device *netdev) | |
1108 | { | |
1109 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1110 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1111 | unsigned long flags; | |
1112 | int i; | |
1113 | ||
1114 | spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); | |
1115 | ||
1116 | pdata->rfe_ctl &= ~(RFE_CTL_UCAST_EN_ | RFE_CTL_MCAST_EN_ | | |
1117 | RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); | |
1118 | ||
1119 | for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++) | |
1120 | pdata->mchash_table[i] = 0; | |
1121 | ||
1122 | /* pfilter_table[0] has own HW address */ | |
1123 | for (i = 1; i < NUM_OF_MAF; i++) { | |
1124 | pdata->pfilter_table[i][0] = 0; | |
1125 | pdata->pfilter_table[i][1] = 0; | |
1126 | } | |
1127 | ||
1128 | pdata->rfe_ctl |= RFE_CTL_BCAST_EN_; | |
1129 | ||
1130 | if (dev->net->flags & IFF_PROMISC) { | |
1131 | netif_dbg(dev, drv, dev->net, "promiscuous mode enabled"); | |
1132 | pdata->rfe_ctl |= RFE_CTL_MCAST_EN_ | RFE_CTL_UCAST_EN_; | |
1133 | } else { | |
1134 | if (dev->net->flags & IFF_ALLMULTI) { | |
1135 | netif_dbg(dev, drv, dev->net, | |
1136 | "receive all multicast enabled"); | |
1137 | pdata->rfe_ctl |= RFE_CTL_MCAST_EN_; | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | if (netdev_mc_count(dev->net)) { | |
1142 | struct netdev_hw_addr *ha; | |
1143 | int i; | |
1144 | ||
1145 | netif_dbg(dev, drv, dev->net, "receive multicast hash filter"); | |
1146 | ||
1147 | pdata->rfe_ctl |= RFE_CTL_DA_PERFECT_; | |
1148 | ||
1149 | i = 1; | |
1150 | netdev_for_each_mc_addr(ha, netdev) { | |
1151 | /* set first 32 into Perfect Filter */ | |
1152 | if (i < 33) { | |
1153 | lan78xx_set_addr_filter(pdata, i, ha->addr); | |
1154 | } else { | |
1155 | u32 bitnum = lan78xx_hash(ha->addr); | |
1156 | ||
1157 | pdata->mchash_table[bitnum / 32] |= | |
1158 | (1 << (bitnum % 32)); | |
1159 | pdata->rfe_ctl |= RFE_CTL_MCAST_HASH_; | |
1160 | } | |
1161 | i++; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); | |
1166 | ||
1167 | /* defer register writes to a sleepable context */ | |
1168 | schedule_work(&pdata->set_multicast); | |
1169 | } | |
1170 | ||
1171 | static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex, | |
1172 | u16 lcladv, u16 rmtadv) | |
1173 | { | |
1174 | u32 flow = 0, fct_flow = 0; | |
1175 | u8 cap; | |
1176 | ||
1177 | if (dev->fc_autoneg) | |
1178 | cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv); | |
1179 | else | |
1180 | cap = dev->fc_request_control; | |
1181 | ||
1182 | if (cap & FLOW_CTRL_TX) | |
1183 | flow |= (FLOW_CR_TX_FCEN_ | 0xFFFF); | |
1184 | ||
1185 | if (cap & FLOW_CTRL_RX) | |
1186 | flow |= FLOW_CR_RX_FCEN_; | |
1187 | ||
1188 | if (dev->udev->speed == USB_SPEED_SUPER) | |
1189 | fct_flow = FLOW_CTRL_THRESHOLD(FLOW_ON_SS, FLOW_OFF_SS); | |
1190 | else if (dev->udev->speed == USB_SPEED_HIGH) | |
1191 | fct_flow = FLOW_CTRL_THRESHOLD(FLOW_ON_HS, FLOW_OFF_HS); | |
1192 | ||
1193 | netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s", | |
1194 | (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), | |
1195 | (cap & FLOW_CTRL_TX ? "enabled" : "disabled")); | |
1196 | ||
1197 | lan78xx_write_reg(dev, FCT_FLOW, fct_flow); | |
1198 | ||
1199 | /* threshold value should be set before enabling flow */ | |
1200 | lan78xx_write_reg(dev, FLOW, flow); | |
1201 | ||
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | static int lan78xx_mac_reset(struct lan78xx_net *dev) | |
1206 | { | |
1207 | unsigned long start_time = jiffies; | |
1208 | u32 val; | |
1209 | int ret; | |
1210 | ||
1211 | mutex_lock(&dev->phy_mutex); | |
1212 | ||
1213 | /* Resetting the device while there is activity on the MDIO | |
1214 | * bus can result in the MAC interface locking up and not | |
1215 | * completing register access transactions. | |
1216 | */ | |
1217 | ret = lan78xx_phy_wait_not_busy(dev); | |
1218 | if (ret < 0) | |
1219 | goto done; | |
1220 | ||
1221 | ret = lan78xx_read_reg(dev, MAC_CR, &val); | |
1222 | if (ret < 0) | |
1223 | goto done; | |
1224 | ||
1225 | val |= MAC_CR_RST_; | |
1226 | ret = lan78xx_write_reg(dev, MAC_CR, val); | |
1227 | if (ret < 0) | |
1228 | goto done; | |
1229 | ||
1230 | /* Wait for the reset to complete before allowing any further | |
1231 | * MAC register accesses otherwise the MAC may lock up. | |
1232 | */ | |
1233 | do { | |
1234 | ret = lan78xx_read_reg(dev, MAC_CR, &val); | |
1235 | if (ret < 0) | |
1236 | goto done; | |
1237 | ||
1238 | if (!(val & MAC_CR_RST_)) { | |
1239 | ret = 0; | |
1240 | goto done; | |
1241 | } | |
1242 | } while (!time_after(jiffies, start_time + HZ)); | |
1243 | ||
1244 | ret = -ETIMEDOUT; | |
1245 | done: | |
1246 | mutex_unlock(&dev->phy_mutex); | |
1247 | ||
1248 | return ret; | |
1249 | } | |
1250 | ||
1251 | static int lan78xx_link_reset(struct lan78xx_net *dev) | |
1252 | { | |
1253 | struct phy_device *phydev = dev->net->phydev; | |
1254 | struct ethtool_link_ksettings ecmd; | |
1255 | int ladv, radv, ret, link; | |
1256 | u32 buf; | |
1257 | ||
1258 | /* clear LAN78xx interrupt status */ | |
1259 | ret = lan78xx_write_reg(dev, INT_STS, INT_STS_PHY_INT_); | |
1260 | if (unlikely(ret < 0)) | |
1261 | return ret; | |
1262 | ||
1263 | mutex_lock(&phydev->lock); | |
1264 | phy_read_status(phydev); | |
1265 | link = phydev->link; | |
1266 | mutex_unlock(&phydev->lock); | |
1267 | ||
1268 | if (!link && dev->link_on) { | |
1269 | dev->link_on = false; | |
1270 | ||
1271 | /* reset MAC */ | |
1272 | ret = lan78xx_mac_reset(dev); | |
1273 | if (ret < 0) | |
1274 | return ret; | |
1275 | ||
1276 | del_timer(&dev->stat_monitor); | |
1277 | } else if (link && !dev->link_on) { | |
1278 | dev->link_on = true; | |
1279 | ||
1280 | phy_ethtool_ksettings_get(phydev, &ecmd); | |
1281 | ||
1282 | if (dev->udev->speed == USB_SPEED_SUPER) { | |
1283 | if (ecmd.base.speed == 1000) { | |
1284 | /* disable U2 */ | |
1285 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); | |
1286 | if (ret < 0) | |
1287 | return ret; | |
1288 | buf &= ~USB_CFG1_DEV_U2_INIT_EN_; | |
1289 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); | |
1290 | if (ret < 0) | |
1291 | return ret; | |
1292 | /* enable U1 */ | |
1293 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); | |
1294 | if (ret < 0) | |
1295 | return ret; | |
1296 | buf |= USB_CFG1_DEV_U1_INIT_EN_; | |
1297 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); | |
1298 | if (ret < 0) | |
1299 | return ret; | |
1300 | } else { | |
1301 | /* enable U1 & U2 */ | |
1302 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); | |
1303 | if (ret < 0) | |
1304 | return ret; | |
1305 | buf |= USB_CFG1_DEV_U2_INIT_EN_; | |
1306 | buf |= USB_CFG1_DEV_U1_INIT_EN_; | |
1307 | ret = lan78xx_write_reg(dev, USB_CFG1, buf); | |
1308 | if (ret < 0) | |
1309 | return ret; | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | ladv = phy_read(phydev, MII_ADVERTISE); | |
1314 | if (ladv < 0) | |
1315 | return ladv; | |
1316 | ||
1317 | radv = phy_read(phydev, MII_LPA); | |
1318 | if (radv < 0) | |
1319 | return radv; | |
1320 | ||
1321 | netif_dbg(dev, link, dev->net, | |
1322 | "speed: %u duplex: %d anadv: 0x%04x anlpa: 0x%04x", | |
1323 | ecmd.base.speed, ecmd.base.duplex, ladv, radv); | |
1324 | ||
1325 | ret = lan78xx_update_flowcontrol(dev, ecmd.base.duplex, ladv, | |
1326 | radv); | |
1327 | if (ret < 0) | |
1328 | return ret; | |
1329 | ||
1330 | if (!timer_pending(&dev->stat_monitor)) { | |
1331 | dev->delta = 1; | |
1332 | mod_timer(&dev->stat_monitor, | |
1333 | jiffies + STAT_UPDATE_TIMER); | |
1334 | } | |
1335 | ||
1336 | tasklet_schedule(&dev->bh); | |
1337 | } | |
1338 | ||
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | /* some work can't be done in tasklets, so we use keventd | |
1343 | * | |
1344 | * NOTE: annoying asymmetry: if it's active, schedule_work() fails, | |
1345 | * but tasklet_schedule() doesn't. hope the failure is rare. | |
1346 | */ | |
1347 | static void lan78xx_defer_kevent(struct lan78xx_net *dev, int work) | |
1348 | { | |
1349 | set_bit(work, &dev->flags); | |
1350 | if (!schedule_delayed_work(&dev->wq, 0)) | |
1351 | netdev_err(dev->net, "kevent %d may have been dropped\n", work); | |
1352 | } | |
1353 | ||
1354 | static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb) | |
1355 | { | |
1356 | u32 intdata; | |
1357 | ||
1358 | if (urb->actual_length != 4) { | |
1359 | netdev_warn(dev->net, | |
1360 | "unexpected urb length %d", urb->actual_length); | |
1361 | return; | |
1362 | } | |
1363 | ||
1364 | intdata = get_unaligned_le32(urb->transfer_buffer); | |
1365 | ||
1366 | if (intdata & INT_ENP_PHY_INT) { | |
1367 | netif_dbg(dev, link, dev->net, "PHY INTR: 0x%08x\n", intdata); | |
1368 | lan78xx_defer_kevent(dev, EVENT_LINK_RESET); | |
1369 | ||
1370 | if (dev->domain_data.phyirq > 0) { | |
1371 | local_irq_disable(); | |
1372 | generic_handle_irq(dev->domain_data.phyirq); | |
1373 | local_irq_enable(); | |
1374 | } | |
1375 | } else { | |
1376 | netdev_warn(dev->net, | |
1377 | "unexpected interrupt: 0x%08x\n", intdata); | |
1378 | } | |
1379 | } | |
1380 | ||
1381 | static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev) | |
1382 | { | |
1383 | return MAX_EEPROM_SIZE; | |
1384 | } | |
1385 | ||
1386 | static int lan78xx_ethtool_get_eeprom(struct net_device *netdev, | |
1387 | struct ethtool_eeprom *ee, u8 *data) | |
1388 | { | |
1389 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1390 | int ret; | |
1391 | ||
1392 | ret = usb_autopm_get_interface(dev->intf); | |
1393 | if (ret) | |
1394 | return ret; | |
1395 | ||
1396 | ee->magic = LAN78XX_EEPROM_MAGIC; | |
1397 | ||
1398 | ret = lan78xx_read_raw_eeprom(dev, ee->offset, ee->len, data); | |
1399 | ||
1400 | usb_autopm_put_interface(dev->intf); | |
1401 | ||
1402 | return ret; | |
1403 | } | |
1404 | ||
1405 | static int lan78xx_ethtool_set_eeprom(struct net_device *netdev, | |
1406 | struct ethtool_eeprom *ee, u8 *data) | |
1407 | { | |
1408 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1409 | int ret; | |
1410 | ||
1411 | ret = usb_autopm_get_interface(dev->intf); | |
1412 | if (ret) | |
1413 | return ret; | |
1414 | ||
1415 | /* Invalid EEPROM_INDICATOR at offset zero will result in a failure | |
1416 | * to load data from EEPROM | |
1417 | */ | |
1418 | if (ee->magic == LAN78XX_EEPROM_MAGIC) | |
1419 | ret = lan78xx_write_raw_eeprom(dev, ee->offset, ee->len, data); | |
1420 | else if ((ee->magic == LAN78XX_OTP_MAGIC) && | |
1421 | (ee->offset == 0) && | |
1422 | (ee->len == 512) && | |
1423 | (data[0] == OTP_INDICATOR_1)) | |
1424 | ret = lan78xx_write_raw_otp(dev, ee->offset, ee->len, data); | |
1425 | ||
1426 | usb_autopm_put_interface(dev->intf); | |
1427 | ||
1428 | return ret; | |
1429 | } | |
1430 | ||
1431 | static void lan78xx_get_strings(struct net_device *netdev, u32 stringset, | |
1432 | u8 *data) | |
1433 | { | |
1434 | if (stringset == ETH_SS_STATS) | |
1435 | memcpy(data, lan78xx_gstrings, sizeof(lan78xx_gstrings)); | |
1436 | } | |
1437 | ||
1438 | static int lan78xx_get_sset_count(struct net_device *netdev, int sset) | |
1439 | { | |
1440 | if (sset == ETH_SS_STATS) | |
1441 | return ARRAY_SIZE(lan78xx_gstrings); | |
1442 | else | |
1443 | return -EOPNOTSUPP; | |
1444 | } | |
1445 | ||
1446 | static void lan78xx_get_stats(struct net_device *netdev, | |
1447 | struct ethtool_stats *stats, u64 *data) | |
1448 | { | |
1449 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1450 | ||
1451 | lan78xx_update_stats(dev); | |
1452 | ||
1453 | mutex_lock(&dev->stats.access_lock); | |
1454 | memcpy(data, &dev->stats.curr_stat, sizeof(dev->stats.curr_stat)); | |
1455 | mutex_unlock(&dev->stats.access_lock); | |
1456 | } | |
1457 | ||
1458 | static void lan78xx_get_wol(struct net_device *netdev, | |
1459 | struct ethtool_wolinfo *wol) | |
1460 | { | |
1461 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1462 | int ret; | |
1463 | u32 buf; | |
1464 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1465 | ||
1466 | if (usb_autopm_get_interface(dev->intf) < 0) | |
1467 | return; | |
1468 | ||
1469 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); | |
1470 | if (unlikely(ret < 0)) { | |
1471 | wol->supported = 0; | |
1472 | wol->wolopts = 0; | |
1473 | } else { | |
1474 | if (buf & USB_CFG_RMT_WKP_) { | |
1475 | wol->supported = WAKE_ALL; | |
1476 | wol->wolopts = pdata->wol; | |
1477 | } else { | |
1478 | wol->supported = 0; | |
1479 | wol->wolopts = 0; | |
1480 | } | |
1481 | } | |
1482 | ||
1483 | usb_autopm_put_interface(dev->intf); | |
1484 | } | |
1485 | ||
1486 | static int lan78xx_set_wol(struct net_device *netdev, | |
1487 | struct ethtool_wolinfo *wol) | |
1488 | { | |
1489 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1490 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
1491 | int ret; | |
1492 | ||
1493 | ret = usb_autopm_get_interface(dev->intf); | |
1494 | if (ret < 0) | |
1495 | return ret; | |
1496 | ||
1497 | if (wol->wolopts & ~WAKE_ALL) | |
1498 | return -EINVAL; | |
1499 | ||
1500 | pdata->wol = wol->wolopts; | |
1501 | ||
1502 | device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts); | |
1503 | ||
1504 | phy_ethtool_set_wol(netdev->phydev, wol); | |
1505 | ||
1506 | usb_autopm_put_interface(dev->intf); | |
1507 | ||
1508 | return ret; | |
1509 | } | |
1510 | ||
1511 | static int lan78xx_get_eee(struct net_device *net, struct ethtool_eee *edata) | |
1512 | { | |
1513 | struct lan78xx_net *dev = netdev_priv(net); | |
1514 | struct phy_device *phydev = net->phydev; | |
1515 | int ret; | |
1516 | u32 buf; | |
1517 | ||
1518 | ret = usb_autopm_get_interface(dev->intf); | |
1519 | if (ret < 0) | |
1520 | return ret; | |
1521 | ||
1522 | ret = phy_ethtool_get_eee(phydev, edata); | |
1523 | if (ret < 0) | |
1524 | goto exit; | |
1525 | ||
1526 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); | |
1527 | if (buf & MAC_CR_EEE_EN_) { | |
1528 | edata->eee_enabled = true; | |
1529 | edata->eee_active = !!(edata->advertised & | |
1530 | edata->lp_advertised); | |
1531 | edata->tx_lpi_enabled = true; | |
1532 | /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */ | |
1533 | ret = lan78xx_read_reg(dev, EEE_TX_LPI_REQ_DLY, &buf); | |
1534 | edata->tx_lpi_timer = buf; | |
1535 | } else { | |
1536 | edata->eee_enabled = false; | |
1537 | edata->eee_active = false; | |
1538 | edata->tx_lpi_enabled = false; | |
1539 | edata->tx_lpi_timer = 0; | |
1540 | } | |
1541 | ||
1542 | ret = 0; | |
1543 | exit: | |
1544 | usb_autopm_put_interface(dev->intf); | |
1545 | ||
1546 | return ret; | |
1547 | } | |
1548 | ||
1549 | static int lan78xx_set_eee(struct net_device *net, struct ethtool_eee *edata) | |
1550 | { | |
1551 | struct lan78xx_net *dev = netdev_priv(net); | |
1552 | int ret; | |
1553 | u32 buf; | |
1554 | ||
1555 | ret = usb_autopm_get_interface(dev->intf); | |
1556 | if (ret < 0) | |
1557 | return ret; | |
1558 | ||
1559 | if (edata->eee_enabled) { | |
1560 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); | |
1561 | buf |= MAC_CR_EEE_EN_; | |
1562 | ret = lan78xx_write_reg(dev, MAC_CR, buf); | |
1563 | ||
1564 | phy_ethtool_set_eee(net->phydev, edata); | |
1565 | ||
1566 | buf = (u32)edata->tx_lpi_timer; | |
1567 | ret = lan78xx_write_reg(dev, EEE_TX_LPI_REQ_DLY, buf); | |
1568 | } else { | |
1569 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); | |
1570 | buf &= ~MAC_CR_EEE_EN_; | |
1571 | ret = lan78xx_write_reg(dev, MAC_CR, buf); | |
1572 | } | |
1573 | ||
1574 | usb_autopm_put_interface(dev->intf); | |
1575 | ||
1576 | return 0; | |
1577 | } | |
1578 | ||
1579 | static u32 lan78xx_get_link(struct net_device *net) | |
1580 | { | |
1581 | u32 link; | |
1582 | ||
1583 | mutex_lock(&net->phydev->lock); | |
1584 | phy_read_status(net->phydev); | |
1585 | link = net->phydev->link; | |
1586 | mutex_unlock(&net->phydev->lock); | |
1587 | ||
1588 | return link; | |
1589 | } | |
1590 | ||
1591 | static void lan78xx_get_drvinfo(struct net_device *net, | |
1592 | struct ethtool_drvinfo *info) | |
1593 | { | |
1594 | struct lan78xx_net *dev = netdev_priv(net); | |
1595 | ||
1596 | strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); | |
1597 | usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info)); | |
1598 | } | |
1599 | ||
1600 | static u32 lan78xx_get_msglevel(struct net_device *net) | |
1601 | { | |
1602 | struct lan78xx_net *dev = netdev_priv(net); | |
1603 | ||
1604 | return dev->msg_enable; | |
1605 | } | |
1606 | ||
1607 | static void lan78xx_set_msglevel(struct net_device *net, u32 level) | |
1608 | { | |
1609 | struct lan78xx_net *dev = netdev_priv(net); | |
1610 | ||
1611 | dev->msg_enable = level; | |
1612 | } | |
1613 | ||
1614 | static int lan78xx_get_link_ksettings(struct net_device *net, | |
1615 | struct ethtool_link_ksettings *cmd) | |
1616 | { | |
1617 | struct lan78xx_net *dev = netdev_priv(net); | |
1618 | struct phy_device *phydev = net->phydev; | |
1619 | int ret; | |
1620 | ||
1621 | ret = usb_autopm_get_interface(dev->intf); | |
1622 | if (ret < 0) | |
1623 | return ret; | |
1624 | ||
1625 | phy_ethtool_ksettings_get(phydev, cmd); | |
1626 | ||
1627 | usb_autopm_put_interface(dev->intf); | |
1628 | ||
1629 | return ret; | |
1630 | } | |
1631 | ||
1632 | static int lan78xx_set_link_ksettings(struct net_device *net, | |
1633 | const struct ethtool_link_ksettings *cmd) | |
1634 | { | |
1635 | struct lan78xx_net *dev = netdev_priv(net); | |
1636 | struct phy_device *phydev = net->phydev; | |
1637 | int ret = 0; | |
1638 | int temp; | |
1639 | ||
1640 | ret = usb_autopm_get_interface(dev->intf); | |
1641 | if (ret < 0) | |
1642 | return ret; | |
1643 | ||
1644 | /* change speed & duplex */ | |
1645 | ret = phy_ethtool_ksettings_set(phydev, cmd); | |
1646 | ||
1647 | if (!cmd->base.autoneg) { | |
1648 | /* force link down */ | |
1649 | temp = phy_read(phydev, MII_BMCR); | |
1650 | phy_write(phydev, MII_BMCR, temp | BMCR_LOOPBACK); | |
1651 | mdelay(1); | |
1652 | phy_write(phydev, MII_BMCR, temp); | |
1653 | } | |
1654 | ||
1655 | usb_autopm_put_interface(dev->intf); | |
1656 | ||
1657 | return ret; | |
1658 | } | |
1659 | ||
1660 | static void lan78xx_get_pause(struct net_device *net, | |
1661 | struct ethtool_pauseparam *pause) | |
1662 | { | |
1663 | struct lan78xx_net *dev = netdev_priv(net); | |
1664 | struct phy_device *phydev = net->phydev; | |
1665 | struct ethtool_link_ksettings ecmd; | |
1666 | ||
1667 | phy_ethtool_ksettings_get(phydev, &ecmd); | |
1668 | ||
1669 | pause->autoneg = dev->fc_autoneg; | |
1670 | ||
1671 | if (dev->fc_request_control & FLOW_CTRL_TX) | |
1672 | pause->tx_pause = 1; | |
1673 | ||
1674 | if (dev->fc_request_control & FLOW_CTRL_RX) | |
1675 | pause->rx_pause = 1; | |
1676 | } | |
1677 | ||
1678 | static int lan78xx_set_pause(struct net_device *net, | |
1679 | struct ethtool_pauseparam *pause) | |
1680 | { | |
1681 | struct lan78xx_net *dev = netdev_priv(net); | |
1682 | struct phy_device *phydev = net->phydev; | |
1683 | struct ethtool_link_ksettings ecmd; | |
1684 | int ret; | |
1685 | ||
1686 | phy_ethtool_ksettings_get(phydev, &ecmd); | |
1687 | ||
1688 | if (pause->autoneg && !ecmd.base.autoneg) { | |
1689 | ret = -EINVAL; | |
1690 | goto exit; | |
1691 | } | |
1692 | ||
1693 | dev->fc_request_control = 0; | |
1694 | if (pause->rx_pause) | |
1695 | dev->fc_request_control |= FLOW_CTRL_RX; | |
1696 | ||
1697 | if (pause->tx_pause) | |
1698 | dev->fc_request_control |= FLOW_CTRL_TX; | |
1699 | ||
1700 | if (ecmd.base.autoneg) { | |
1701 | __ETHTOOL_DECLARE_LINK_MODE_MASK(fc) = { 0, }; | |
1702 | u32 mii_adv; | |
1703 | ||
1704 | linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT, | |
1705 | ecmd.link_modes.advertising); | |
1706 | linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, | |
1707 | ecmd.link_modes.advertising); | |
1708 | mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); | |
1709 | mii_adv_to_linkmode_adv_t(fc, mii_adv); | |
1710 | linkmode_or(ecmd.link_modes.advertising, fc, | |
1711 | ecmd.link_modes.advertising); | |
1712 | ||
1713 | phy_ethtool_ksettings_set(phydev, &ecmd); | |
1714 | } | |
1715 | ||
1716 | dev->fc_autoneg = pause->autoneg; | |
1717 | ||
1718 | ret = 0; | |
1719 | exit: | |
1720 | return ret; | |
1721 | } | |
1722 | ||
1723 | static int lan78xx_get_regs_len(struct net_device *netdev) | |
1724 | { | |
1725 | if (!netdev->phydev) | |
1726 | return (sizeof(lan78xx_regs)); | |
1727 | else | |
1728 | return (sizeof(lan78xx_regs) + PHY_REG_SIZE); | |
1729 | } | |
1730 | ||
1731 | static void | |
1732 | lan78xx_get_regs(struct net_device *netdev, struct ethtool_regs *regs, | |
1733 | void *buf) | |
1734 | { | |
1735 | u32 *data = buf; | |
1736 | int i, j; | |
1737 | struct lan78xx_net *dev = netdev_priv(netdev); | |
1738 | ||
1739 | /* Read Device/MAC registers */ | |
1740 | for (i = 0; i < ARRAY_SIZE(lan78xx_regs); i++) | |
1741 | lan78xx_read_reg(dev, lan78xx_regs[i], &data[i]); | |
1742 | ||
1743 | if (!netdev->phydev) | |
1744 | return; | |
1745 | ||
1746 | /* Read PHY registers */ | |
1747 | for (j = 0; j < 32; i++, j++) | |
1748 | data[i] = phy_read(netdev->phydev, j); | |
1749 | } | |
1750 | ||
1751 | static const struct ethtool_ops lan78xx_ethtool_ops = { | |
1752 | .get_link = lan78xx_get_link, | |
1753 | .nway_reset = phy_ethtool_nway_reset, | |
1754 | .get_drvinfo = lan78xx_get_drvinfo, | |
1755 | .get_msglevel = lan78xx_get_msglevel, | |
1756 | .set_msglevel = lan78xx_set_msglevel, | |
1757 | .get_eeprom_len = lan78xx_ethtool_get_eeprom_len, | |
1758 | .get_eeprom = lan78xx_ethtool_get_eeprom, | |
1759 | .set_eeprom = lan78xx_ethtool_set_eeprom, | |
1760 | .get_ethtool_stats = lan78xx_get_stats, | |
1761 | .get_sset_count = lan78xx_get_sset_count, | |
1762 | .get_strings = lan78xx_get_strings, | |
1763 | .get_wol = lan78xx_get_wol, | |
1764 | .set_wol = lan78xx_set_wol, | |
1765 | .get_ts_info = ethtool_op_get_ts_info, | |
1766 | .get_eee = lan78xx_get_eee, | |
1767 | .set_eee = lan78xx_set_eee, | |
1768 | .get_pauseparam = lan78xx_get_pause, | |
1769 | .set_pauseparam = lan78xx_set_pause, | |
1770 | .get_link_ksettings = lan78xx_get_link_ksettings, | |
1771 | .set_link_ksettings = lan78xx_set_link_ksettings, | |
1772 | .get_regs_len = lan78xx_get_regs_len, | |
1773 | .get_regs = lan78xx_get_regs, | |
1774 | }; | |
1775 | ||
1776 | static void lan78xx_init_mac_address(struct lan78xx_net *dev) | |
1777 | { | |
1778 | u32 addr_lo, addr_hi; | |
1779 | u8 addr[6]; | |
1780 | ||
1781 | lan78xx_read_reg(dev, RX_ADDRL, &addr_lo); | |
1782 | lan78xx_read_reg(dev, RX_ADDRH, &addr_hi); | |
1783 | ||
1784 | addr[0] = addr_lo & 0xFF; | |
1785 | addr[1] = (addr_lo >> 8) & 0xFF; | |
1786 | addr[2] = (addr_lo >> 16) & 0xFF; | |
1787 | addr[3] = (addr_lo >> 24) & 0xFF; | |
1788 | addr[4] = addr_hi & 0xFF; | |
1789 | addr[5] = (addr_hi >> 8) & 0xFF; | |
1790 | ||
1791 | if (!is_valid_ether_addr(addr)) { | |
1792 | if (!eth_platform_get_mac_address(&dev->udev->dev, addr)) { | |
1793 | /* valid address present in Device Tree */ | |
1794 | netif_dbg(dev, ifup, dev->net, | |
1795 | "MAC address read from Device Tree"); | |
1796 | } else if (((lan78xx_read_eeprom(dev, EEPROM_MAC_OFFSET, | |
1797 | ETH_ALEN, addr) == 0) || | |
1798 | (lan78xx_read_otp(dev, EEPROM_MAC_OFFSET, | |
1799 | ETH_ALEN, addr) == 0)) && | |
1800 | is_valid_ether_addr(addr)) { | |
1801 | /* eeprom values are valid so use them */ | |
1802 | netif_dbg(dev, ifup, dev->net, | |
1803 | "MAC address read from EEPROM"); | |
1804 | } else { | |
1805 | /* generate random MAC */ | |
1806 | eth_random_addr(addr); | |
1807 | netif_dbg(dev, ifup, dev->net, | |
1808 | "MAC address set to random addr"); | |
1809 | } | |
1810 | ||
1811 | addr_lo = addr[0] | (addr[1] << 8) | | |
1812 | (addr[2] << 16) | (addr[3] << 24); | |
1813 | addr_hi = addr[4] | (addr[5] << 8); | |
1814 | ||
1815 | lan78xx_write_reg(dev, RX_ADDRL, addr_lo); | |
1816 | lan78xx_write_reg(dev, RX_ADDRH, addr_hi); | |
1817 | } | |
1818 | ||
1819 | lan78xx_write_reg(dev, MAF_LO(0), addr_lo); | |
1820 | lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); | |
1821 | ||
1822 | ether_addr_copy(dev->net->dev_addr, addr); | |
1823 | } | |
1824 | ||
1825 | /* MDIO read and write wrappers for phylib */ | |
1826 | static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx) | |
1827 | { | |
1828 | struct lan78xx_net *dev = bus->priv; | |
1829 | u32 val, addr; | |
1830 | int ret; | |
1831 | ||
1832 | ret = usb_autopm_get_interface(dev->intf); | |
1833 | if (ret < 0) | |
1834 | return ret; | |
1835 | ||
1836 | mutex_lock(&dev->phy_mutex); | |
1837 | ||
1838 | /* confirm MII not busy */ | |
1839 | ret = lan78xx_phy_wait_not_busy(dev); | |
1840 | if (ret < 0) | |
1841 | goto done; | |
1842 | ||
1843 | /* set the address, index & direction (read from PHY) */ | |
1844 | addr = mii_access(phy_id, idx, MII_READ); | |
1845 | ret = lan78xx_write_reg(dev, MII_ACC, addr); | |
1846 | ||
1847 | ret = lan78xx_phy_wait_not_busy(dev); | |
1848 | if (ret < 0) | |
1849 | goto done; | |
1850 | ||
1851 | ret = lan78xx_read_reg(dev, MII_DATA, &val); | |
1852 | ||
1853 | ret = (int)(val & 0xFFFF); | |
1854 | ||
1855 | done: | |
1856 | mutex_unlock(&dev->phy_mutex); | |
1857 | usb_autopm_put_interface(dev->intf); | |
1858 | ||
1859 | return ret; | |
1860 | } | |
1861 | ||
1862 | static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx, | |
1863 | u16 regval) | |
1864 | { | |
1865 | struct lan78xx_net *dev = bus->priv; | |
1866 | u32 val, addr; | |
1867 | int ret; | |
1868 | ||
1869 | ret = usb_autopm_get_interface(dev->intf); | |
1870 | if (ret < 0) | |
1871 | return ret; | |
1872 | ||
1873 | mutex_lock(&dev->phy_mutex); | |
1874 | ||
1875 | /* confirm MII not busy */ | |
1876 | ret = lan78xx_phy_wait_not_busy(dev); | |
1877 | if (ret < 0) | |
1878 | goto done; | |
1879 | ||
1880 | val = (u32)regval; | |
1881 | ret = lan78xx_write_reg(dev, MII_DATA, val); | |
1882 | ||
1883 | /* set the address, index & direction (write to PHY) */ | |
1884 | addr = mii_access(phy_id, idx, MII_WRITE); | |
1885 | ret = lan78xx_write_reg(dev, MII_ACC, addr); | |
1886 | ||
1887 | ret = lan78xx_phy_wait_not_busy(dev); | |
1888 | if (ret < 0) | |
1889 | goto done; | |
1890 | ||
1891 | done: | |
1892 | mutex_unlock(&dev->phy_mutex); | |
1893 | usb_autopm_put_interface(dev->intf); | |
1894 | return 0; | |
1895 | } | |
1896 | ||
1897 | static int lan78xx_mdio_init(struct lan78xx_net *dev) | |
1898 | { | |
1899 | struct device_node *node; | |
1900 | int ret; | |
1901 | ||
1902 | dev->mdiobus = mdiobus_alloc(); | |
1903 | if (!dev->mdiobus) { | |
1904 | netdev_err(dev->net, "can't allocate MDIO bus\n"); | |
1905 | return -ENOMEM; | |
1906 | } | |
1907 | ||
1908 | dev->mdiobus->priv = (void *)dev; | |
1909 | dev->mdiobus->read = lan78xx_mdiobus_read; | |
1910 | dev->mdiobus->write = lan78xx_mdiobus_write; | |
1911 | dev->mdiobus->name = "lan78xx-mdiobus"; | |
1912 | dev->mdiobus->parent = &dev->udev->dev; | |
1913 | ||
1914 | snprintf(dev->mdiobus->id, MII_BUS_ID_SIZE, "usb-%03d:%03d", | |
1915 | dev->udev->bus->busnum, dev->udev->devnum); | |
1916 | ||
1917 | switch (dev->chipid) { | |
1918 | case ID_REV_CHIP_ID_7800_: | |
1919 | case ID_REV_CHIP_ID_7850_: | |
1920 | /* set to internal PHY id */ | |
1921 | dev->mdiobus->phy_mask = ~(1 << 1); | |
1922 | break; | |
1923 | case ID_REV_CHIP_ID_7801_: | |
1924 | /* scan thru PHYAD[2..0] */ | |
1925 | dev->mdiobus->phy_mask = ~(0xFF); | |
1926 | break; | |
1927 | } | |
1928 | ||
1929 | node = of_get_child_by_name(dev->udev->dev.of_node, "mdio"); | |
1930 | ret = of_mdiobus_register(dev->mdiobus, node); | |
1931 | of_node_put(node); | |
1932 | if (ret) { | |
1933 | netdev_err(dev->net, "can't register MDIO bus\n"); | |
1934 | goto exit1; | |
1935 | } | |
1936 | ||
1937 | netdev_dbg(dev->net, "registered mdiobus bus %s\n", dev->mdiobus->id); | |
1938 | return 0; | |
1939 | exit1: | |
1940 | mdiobus_free(dev->mdiobus); | |
1941 | return ret; | |
1942 | } | |
1943 | ||
1944 | static void lan78xx_remove_mdio(struct lan78xx_net *dev) | |
1945 | { | |
1946 | mdiobus_unregister(dev->mdiobus); | |
1947 | mdiobus_free(dev->mdiobus); | |
1948 | } | |
1949 | ||
1950 | static void lan78xx_link_status_change(struct net_device *net) | |
1951 | { | |
1952 | struct phy_device *phydev = net->phydev; | |
1953 | int temp; | |
1954 | ||
1955 | /* At forced 100 F/H mode, chip may fail to set mode correctly | |
1956 | * when cable is switched between long(~50+m) and short one. | |
1957 | * As workaround, set to 10 before setting to 100 | |
1958 | * at forced 100 F/H mode. | |
1959 | */ | |
1960 | if (!phydev->autoneg && (phydev->speed == 100)) { | |
1961 | /* disable phy interrupt */ | |
1962 | temp = phy_read(phydev, LAN88XX_INT_MASK); | |
1963 | temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_; | |
1964 | phy_write(phydev, LAN88XX_INT_MASK, temp); | |
1965 | ||
1966 | temp = phy_read(phydev, MII_BMCR); | |
1967 | temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000); | |
1968 | phy_write(phydev, MII_BMCR, temp); /* set to 10 first */ | |
1969 | temp |= BMCR_SPEED100; | |
1970 | phy_write(phydev, MII_BMCR, temp); /* set to 100 later */ | |
1971 | ||
1972 | /* clear pending interrupt generated while workaround */ | |
1973 | temp = phy_read(phydev, LAN88XX_INT_STS); | |
1974 | ||
1975 | /* enable phy interrupt back */ | |
1976 | temp = phy_read(phydev, LAN88XX_INT_MASK); | |
1977 | temp |= LAN88XX_INT_MASK_MDINTPIN_EN_; | |
1978 | phy_write(phydev, LAN88XX_INT_MASK, temp); | |
1979 | } | |
1980 | } | |
1981 | ||
1982 | static int irq_map(struct irq_domain *d, unsigned int irq, | |
1983 | irq_hw_number_t hwirq) | |
1984 | { | |
1985 | struct irq_domain_data *data = d->host_data; | |
1986 | ||
1987 | irq_set_chip_data(irq, data); | |
1988 | irq_set_chip_and_handler(irq, data->irqchip, data->irq_handler); | |
1989 | irq_set_noprobe(irq); | |
1990 | ||
1991 | return 0; | |
1992 | } | |
1993 | ||
1994 | static void irq_unmap(struct irq_domain *d, unsigned int irq) | |
1995 | { | |
1996 | irq_set_chip_and_handler(irq, NULL, NULL); | |
1997 | irq_set_chip_data(irq, NULL); | |
1998 | } | |
1999 | ||
2000 | static const struct irq_domain_ops chip_domain_ops = { | |
2001 | .map = irq_map, | |
2002 | .unmap = irq_unmap, | |
2003 | }; | |
2004 | ||
2005 | static void lan78xx_irq_mask(struct irq_data *irqd) | |
2006 | { | |
2007 | struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); | |
2008 | ||
2009 | data->irqenable &= ~BIT(irqd_to_hwirq(irqd)); | |
2010 | } | |
2011 | ||
2012 | static void lan78xx_irq_unmask(struct irq_data *irqd) | |
2013 | { | |
2014 | struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); | |
2015 | ||
2016 | data->irqenable |= BIT(irqd_to_hwirq(irqd)); | |
2017 | } | |
2018 | ||
2019 | static void lan78xx_irq_bus_lock(struct irq_data *irqd) | |
2020 | { | |
2021 | struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); | |
2022 | ||
2023 | mutex_lock(&data->irq_lock); | |
2024 | } | |
2025 | ||
2026 | static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd) | |
2027 | { | |
2028 | struct irq_domain_data *data = irq_data_get_irq_chip_data(irqd); | |
2029 | struct lan78xx_net *dev = | |
2030 | container_of(data, struct lan78xx_net, domain_data); | |
2031 | u32 buf; | |
2032 | ||
2033 | /* call register access here because irq_bus_lock & irq_bus_sync_unlock | |
2034 | * are only two callbacks executed in non-atomic contex. | |
2035 | */ | |
2036 | lan78xx_read_reg(dev, INT_EP_CTL, &buf); | |
2037 | if (buf != data->irqenable) | |
2038 | lan78xx_write_reg(dev, INT_EP_CTL, data->irqenable); | |
2039 | ||
2040 | mutex_unlock(&data->irq_lock); | |
2041 | } | |
2042 | ||
2043 | static struct irq_chip lan78xx_irqchip = { | |
2044 | .name = "lan78xx-irqs", | |
2045 | .irq_mask = lan78xx_irq_mask, | |
2046 | .irq_unmask = lan78xx_irq_unmask, | |
2047 | .irq_bus_lock = lan78xx_irq_bus_lock, | |
2048 | .irq_bus_sync_unlock = lan78xx_irq_bus_sync_unlock, | |
2049 | }; | |
2050 | ||
2051 | static int lan78xx_setup_irq_domain(struct lan78xx_net *dev) | |
2052 | { | |
2053 | struct device_node *of_node; | |
2054 | struct irq_domain *irqdomain; | |
2055 | unsigned int irqmap = 0; | |
2056 | u32 buf; | |
2057 | int ret = 0; | |
2058 | ||
2059 | of_node = dev->udev->dev.parent->of_node; | |
2060 | ||
2061 | mutex_init(&dev->domain_data.irq_lock); | |
2062 | ||
2063 | lan78xx_read_reg(dev, INT_EP_CTL, &buf); | |
2064 | dev->domain_data.irqenable = buf; | |
2065 | ||
2066 | dev->domain_data.irqchip = &lan78xx_irqchip; | |
2067 | dev->domain_data.irq_handler = handle_simple_irq; | |
2068 | ||
2069 | irqdomain = irq_domain_add_simple(of_node, MAX_INT_EP, 0, | |
2070 | &chip_domain_ops, &dev->domain_data); | |
2071 | if (irqdomain) { | |
2072 | /* create mapping for PHY interrupt */ | |
2073 | irqmap = irq_create_mapping(irqdomain, INT_EP_PHY); | |
2074 | if (!irqmap) { | |
2075 | irq_domain_remove(irqdomain); | |
2076 | ||
2077 | irqdomain = NULL; | |
2078 | ret = -EINVAL; | |
2079 | } | |
2080 | } else { | |
2081 | ret = -EINVAL; | |
2082 | } | |
2083 | ||
2084 | dev->domain_data.irqdomain = irqdomain; | |
2085 | dev->domain_data.phyirq = irqmap; | |
2086 | ||
2087 | return ret; | |
2088 | } | |
2089 | ||
2090 | static void lan78xx_remove_irq_domain(struct lan78xx_net *dev) | |
2091 | { | |
2092 | if (dev->domain_data.phyirq > 0) { | |
2093 | irq_dispose_mapping(dev->domain_data.phyirq); | |
2094 | ||
2095 | if (dev->domain_data.irqdomain) | |
2096 | irq_domain_remove(dev->domain_data.irqdomain); | |
2097 | } | |
2098 | dev->domain_data.phyirq = 0; | |
2099 | dev->domain_data.irqdomain = NULL; | |
2100 | } | |
2101 | ||
2102 | static int lan8835_fixup(struct phy_device *phydev) | |
2103 | { | |
2104 | int buf; | |
2105 | struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); | |
2106 | ||
2107 | /* LED2/PME_N/IRQ_N/RGMII_ID pin to IRQ_N mode */ | |
2108 | buf = phy_read_mmd(phydev, MDIO_MMD_PCS, 0x8010); | |
2109 | buf &= ~0x1800; | |
2110 | buf |= 0x0800; | |
2111 | phy_write_mmd(phydev, MDIO_MMD_PCS, 0x8010, buf); | |
2112 | ||
2113 | /* RGMII MAC TXC Delay Enable */ | |
2114 | lan78xx_write_reg(dev, MAC_RGMII_ID, | |
2115 | MAC_RGMII_ID_TXC_DELAY_EN_); | |
2116 | ||
2117 | /* RGMII TX DLL Tune Adjust */ | |
2118 | lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); | |
2119 | ||
2120 | dev->interface = PHY_INTERFACE_MODE_RGMII_TXID; | |
2121 | ||
2122 | return 1; | |
2123 | } | |
2124 | ||
2125 | static int ksz9031rnx_fixup(struct phy_device *phydev) | |
2126 | { | |
2127 | struct lan78xx_net *dev = netdev_priv(phydev->attached_dev); | |
2128 | ||
2129 | /* Micrel9301RNX PHY configuration */ | |
2130 | /* RGMII Control Signal Pad Skew */ | |
2131 | phy_write_mmd(phydev, MDIO_MMD_WIS, 4, 0x0077); | |
2132 | /* RGMII RX Data Pad Skew */ | |
2133 | phy_write_mmd(phydev, MDIO_MMD_WIS, 5, 0x7777); | |
2134 | /* RGMII RX Clock Pad Skew */ | |
2135 | phy_write_mmd(phydev, MDIO_MMD_WIS, 8, 0x1FF); | |
2136 | ||
2137 | dev->interface = PHY_INTERFACE_MODE_RGMII_RXID; | |
2138 | ||
2139 | return 1; | |
2140 | } | |
2141 | ||
2142 | static struct phy_device *lan7801_phy_init(struct lan78xx_net *dev) | |
2143 | { | |
2144 | u32 buf; | |
2145 | int ret; | |
2146 | struct fixed_phy_status fphy_status = { | |
2147 | .link = 1, | |
2148 | .speed = SPEED_1000, | |
2149 | .duplex = DUPLEX_FULL, | |
2150 | }; | |
2151 | struct phy_device *phydev; | |
2152 | ||
2153 | phydev = phy_find_first(dev->mdiobus); | |
2154 | if (!phydev) { | |
2155 | netdev_dbg(dev->net, "PHY Not Found!! Registering Fixed PHY\n"); | |
2156 | phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL); | |
2157 | if (IS_ERR(phydev)) { | |
2158 | netdev_err(dev->net, "No PHY/fixed_PHY found\n"); | |
2159 | return NULL; | |
2160 | } | |
2161 | netdev_dbg(dev->net, "Registered FIXED PHY\n"); | |
2162 | dev->interface = PHY_INTERFACE_MODE_RGMII; | |
2163 | ret = lan78xx_write_reg(dev, MAC_RGMII_ID, | |
2164 | MAC_RGMII_ID_TXC_DELAY_EN_); | |
2165 | ret = lan78xx_write_reg(dev, RGMII_TX_BYP_DLL, 0x3D00); | |
2166 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); | |
2167 | buf |= HW_CFG_CLK125_EN_; | |
2168 | buf |= HW_CFG_REFCLK25_EN_; | |
2169 | ret = lan78xx_write_reg(dev, HW_CFG, buf); | |
2170 | } else { | |
2171 | if (!phydev->drv) { | |
2172 | netdev_err(dev->net, "no PHY driver found\n"); | |
2173 | return NULL; | |
2174 | } | |
2175 | dev->interface = PHY_INTERFACE_MODE_RGMII; | |
2176 | /* external PHY fixup for KSZ9031RNX */ | |
2177 | ret = phy_register_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0, | |
2178 | ksz9031rnx_fixup); | |
2179 | if (ret < 0) { | |
2180 | netdev_err(dev->net, "Failed to register fixup for PHY_KSZ9031RNX\n"); | |
2181 | return NULL; | |
2182 | } | |
2183 | /* external PHY fixup for LAN8835 */ | |
2184 | ret = phy_register_fixup_for_uid(PHY_LAN8835, 0xfffffff0, | |
2185 | lan8835_fixup); | |
2186 | if (ret < 0) { | |
2187 | netdev_err(dev->net, "Failed to register fixup for PHY_LAN8835\n"); | |
2188 | return NULL; | |
2189 | } | |
2190 | /* add more external PHY fixup here if needed */ | |
2191 | ||
2192 | phydev->is_internal = false; | |
2193 | } | |
2194 | return phydev; | |
2195 | } | |
2196 | ||
2197 | static int lan78xx_phy_init(struct lan78xx_net *dev) | |
2198 | { | |
2199 | __ETHTOOL_DECLARE_LINK_MODE_MASK(fc) = { 0, }; | |
2200 | int ret; | |
2201 | u32 mii_adv; | |
2202 | struct phy_device *phydev; | |
2203 | ||
2204 | switch (dev->chipid) { | |
2205 | case ID_REV_CHIP_ID_7801_: | |
2206 | phydev = lan7801_phy_init(dev); | |
2207 | if (!phydev) { | |
2208 | netdev_err(dev->net, "lan7801: PHY Init Failed"); | |
2209 | return -EIO; | |
2210 | } | |
2211 | break; | |
2212 | ||
2213 | case ID_REV_CHIP_ID_7800_: | |
2214 | case ID_REV_CHIP_ID_7850_: | |
2215 | phydev = phy_find_first(dev->mdiobus); | |
2216 | if (!phydev) { | |
2217 | netdev_err(dev->net, "no PHY found\n"); | |
2218 | return -EIO; | |
2219 | } | |
2220 | phydev->is_internal = true; | |
2221 | dev->interface = PHY_INTERFACE_MODE_GMII; | |
2222 | break; | |
2223 | ||
2224 | default: | |
2225 | netdev_err(dev->net, "Unknown CHIP ID found\n"); | |
2226 | return -EIO; | |
2227 | } | |
2228 | ||
2229 | /* if phyirq is not set, use polling mode in phylib */ | |
2230 | if (dev->domain_data.phyirq > 0) | |
2231 | phydev->irq = dev->domain_data.phyirq; | |
2232 | else | |
2233 | phydev->irq = PHY_POLL; | |
2234 | netdev_dbg(dev->net, "phydev->irq = %d\n", phydev->irq); | |
2235 | ||
2236 | /* set to AUTOMDIX */ | |
2237 | phydev->mdix = ETH_TP_MDI_AUTO; | |
2238 | ||
2239 | ret = phy_connect_direct(dev->net, phydev, | |
2240 | lan78xx_link_status_change, | |
2241 | dev->interface); | |
2242 | if (ret) { | |
2243 | netdev_err(dev->net, "can't attach PHY to %s\n", | |
2244 | dev->mdiobus->id); | |
2245 | if (dev->chipid == ID_REV_CHIP_ID_7801_) { | |
2246 | if (phy_is_pseudo_fixed_link(phydev)) { | |
2247 | fixed_phy_unregister(phydev); | |
2248 | } else { | |
2249 | phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, | |
2250 | 0xfffffff0); | |
2251 | phy_unregister_fixup_for_uid(PHY_LAN8835, | |
2252 | 0xfffffff0); | |
2253 | } | |
2254 | } | |
2255 | return -EIO; | |
2256 | } | |
2257 | ||
2258 | /* MAC doesn't support 1000T Half */ | |
2259 | phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); | |
2260 | ||
2261 | /* support both flow controls */ | |
2262 | dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); | |
2263 | linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT, | |
2264 | phydev->advertising); | |
2265 | linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, | |
2266 | phydev->advertising); | |
2267 | mii_adv = (u32)mii_advertise_flowctrl(dev->fc_request_control); | |
2268 | mii_adv_to_linkmode_adv_t(fc, mii_adv); | |
2269 | linkmode_or(phydev->advertising, fc, phydev->advertising); | |
2270 | ||
2271 | if (phydev->mdio.dev.of_node) { | |
2272 | u32 reg; | |
2273 | int len; | |
2274 | ||
2275 | len = of_property_count_elems_of_size(phydev->mdio.dev.of_node, | |
2276 | "microchip,led-modes", | |
2277 | sizeof(u32)); | |
2278 | if (len >= 0) { | |
2279 | /* Ensure the appropriate LEDs are enabled */ | |
2280 | lan78xx_read_reg(dev, HW_CFG, ®); | |
2281 | reg &= ~(HW_CFG_LED0_EN_ | | |
2282 | HW_CFG_LED1_EN_ | | |
2283 | HW_CFG_LED2_EN_ | | |
2284 | HW_CFG_LED3_EN_); | |
2285 | reg |= (len > 0) * HW_CFG_LED0_EN_ | | |
2286 | (len > 1) * HW_CFG_LED1_EN_ | | |
2287 | (len > 2) * HW_CFG_LED2_EN_ | | |
2288 | (len > 3) * HW_CFG_LED3_EN_; | |
2289 | lan78xx_write_reg(dev, HW_CFG, reg); | |
2290 | } | |
2291 | } | |
2292 | ||
2293 | genphy_config_aneg(phydev); | |
2294 | ||
2295 | dev->fc_autoneg = phydev->autoneg; | |
2296 | ||
2297 | return 0; | |
2298 | } | |
2299 | ||
2300 | static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size) | |
2301 | { | |
2302 | u32 buf; | |
2303 | bool rxenabled; | |
2304 | ||
2305 | lan78xx_read_reg(dev, MAC_RX, &buf); | |
2306 | ||
2307 | rxenabled = ((buf & MAC_RX_RXEN_) != 0); | |
2308 | ||
2309 | if (rxenabled) { | |
2310 | buf &= ~MAC_RX_RXEN_; | |
2311 | lan78xx_write_reg(dev, MAC_RX, buf); | |
2312 | } | |
2313 | ||
2314 | /* add 4 to size for FCS */ | |
2315 | buf &= ~MAC_RX_MAX_SIZE_MASK_; | |
2316 | buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_); | |
2317 | ||
2318 | lan78xx_write_reg(dev, MAC_RX, buf); | |
2319 | ||
2320 | if (rxenabled) { | |
2321 | buf |= MAC_RX_RXEN_; | |
2322 | lan78xx_write_reg(dev, MAC_RX, buf); | |
2323 | } | |
2324 | ||
2325 | return 0; | |
2326 | } | |
2327 | ||
2328 | static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q) | |
2329 | { | |
2330 | struct sk_buff *skb; | |
2331 | unsigned long flags; | |
2332 | int count = 0; | |
2333 | ||
2334 | spin_lock_irqsave(&q->lock, flags); | |
2335 | while (!skb_queue_empty(q)) { | |
2336 | struct skb_data *entry; | |
2337 | struct urb *urb; | |
2338 | int ret; | |
2339 | ||
2340 | skb_queue_walk(q, skb) { | |
2341 | entry = (struct skb_data *)skb->cb; | |
2342 | if (entry->state != unlink_start) | |
2343 | goto found; | |
2344 | } | |
2345 | break; | |
2346 | found: | |
2347 | entry->state = unlink_start; | |
2348 | urb = entry->urb; | |
2349 | ||
2350 | /* Get reference count of the URB to avoid it to be | |
2351 | * freed during usb_unlink_urb, which may trigger | |
2352 | * use-after-free problem inside usb_unlink_urb since | |
2353 | * usb_unlink_urb is always racing with .complete | |
2354 | * handler(include defer_bh). | |
2355 | */ | |
2356 | usb_get_urb(urb); | |
2357 | spin_unlock_irqrestore(&q->lock, flags); | |
2358 | /* during some PM-driven resume scenarios, | |
2359 | * these (async) unlinks complete immediately | |
2360 | */ | |
2361 | ret = usb_unlink_urb(urb); | |
2362 | if (ret != -EINPROGRESS && ret != 0) | |
2363 | netdev_dbg(dev->net, "unlink urb err, %d\n", ret); | |
2364 | else | |
2365 | count++; | |
2366 | usb_put_urb(urb); | |
2367 | spin_lock_irqsave(&q->lock, flags); | |
2368 | } | |
2369 | spin_unlock_irqrestore(&q->lock, flags); | |
2370 | return count; | |
2371 | } | |
2372 | ||
2373 | static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu) | |
2374 | { | |
2375 | struct lan78xx_net *dev = netdev_priv(netdev); | |
2376 | int ll_mtu = new_mtu + netdev->hard_header_len; | |
2377 | int old_hard_mtu = dev->hard_mtu; | |
2378 | int old_rx_urb_size = dev->rx_urb_size; | |
2379 | int ret; | |
2380 | ||
2381 | /* no second zero-length packet read wanted after mtu-sized packets */ | |
2382 | if ((ll_mtu % dev->maxpacket) == 0) | |
2383 | return -EDOM; | |
2384 | ||
2385 | ret = usb_autopm_get_interface(dev->intf); | |
2386 | if (ret < 0) | |
2387 | return ret; | |
2388 | ||
2389 | lan78xx_set_rx_max_frame_length(dev, new_mtu + VLAN_ETH_HLEN); | |
2390 | ||
2391 | netdev->mtu = new_mtu; | |
2392 | ||
2393 | dev->hard_mtu = netdev->mtu + netdev->hard_header_len; | |
2394 | if (dev->rx_urb_size == old_hard_mtu) { | |
2395 | dev->rx_urb_size = dev->hard_mtu; | |
2396 | if (dev->rx_urb_size > old_rx_urb_size) { | |
2397 | if (netif_running(dev->net)) { | |
2398 | unlink_urbs(dev, &dev->rxq); | |
2399 | tasklet_schedule(&dev->bh); | |
2400 | } | |
2401 | } | |
2402 | } | |
2403 | ||
2404 | usb_autopm_put_interface(dev->intf); | |
2405 | ||
2406 | return 0; | |
2407 | } | |
2408 | ||
2409 | static int lan78xx_set_mac_addr(struct net_device *netdev, void *p) | |
2410 | { | |
2411 | struct lan78xx_net *dev = netdev_priv(netdev); | |
2412 | struct sockaddr *addr = p; | |
2413 | u32 addr_lo, addr_hi; | |
2414 | ||
2415 | if (netif_running(netdev)) | |
2416 | return -EBUSY; | |
2417 | ||
2418 | if (!is_valid_ether_addr(addr->sa_data)) | |
2419 | return -EADDRNOTAVAIL; | |
2420 | ||
2421 | ether_addr_copy(netdev->dev_addr, addr->sa_data); | |
2422 | ||
2423 | addr_lo = netdev->dev_addr[0] | | |
2424 | netdev->dev_addr[1] << 8 | | |
2425 | netdev->dev_addr[2] << 16 | | |
2426 | netdev->dev_addr[3] << 24; | |
2427 | addr_hi = netdev->dev_addr[4] | | |
2428 | netdev->dev_addr[5] << 8; | |
2429 | ||
2430 | lan78xx_write_reg(dev, RX_ADDRL, addr_lo); | |
2431 | lan78xx_write_reg(dev, RX_ADDRH, addr_hi); | |
2432 | ||
2433 | /* Added to support MAC address changes */ | |
2434 | lan78xx_write_reg(dev, MAF_LO(0), addr_lo); | |
2435 | lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); | |
2436 | ||
2437 | return 0; | |
2438 | } | |
2439 | ||
2440 | /* Enable or disable Rx checksum offload engine */ | |
2441 | static int lan78xx_set_features(struct net_device *netdev, | |
2442 | netdev_features_t features) | |
2443 | { | |
2444 | struct lan78xx_net *dev = netdev_priv(netdev); | |
2445 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
2446 | unsigned long flags; | |
2447 | ||
2448 | spin_lock_irqsave(&pdata->rfe_ctl_lock, flags); | |
2449 | ||
2450 | if (features & NETIF_F_RXCSUM) { | |
2451 | pdata->rfe_ctl |= RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_; | |
2452 | pdata->rfe_ctl |= RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_; | |
2453 | } else { | |
2454 | pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_COE_ | RFE_CTL_IP_COE_); | |
2455 | pdata->rfe_ctl &= ~(RFE_CTL_ICMP_COE_ | RFE_CTL_IGMP_COE_); | |
2456 | } | |
2457 | ||
2458 | if (features & NETIF_F_HW_VLAN_CTAG_RX) | |
2459 | pdata->rfe_ctl |= RFE_CTL_VLAN_STRIP_; | |
2460 | else | |
2461 | pdata->rfe_ctl &= ~RFE_CTL_VLAN_STRIP_; | |
2462 | ||
2463 | if (features & NETIF_F_HW_VLAN_CTAG_FILTER) | |
2464 | pdata->rfe_ctl |= RFE_CTL_VLAN_FILTER_; | |
2465 | else | |
2466 | pdata->rfe_ctl &= ~RFE_CTL_VLAN_FILTER_; | |
2467 | ||
2468 | spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags); | |
2469 | ||
2470 | lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); | |
2471 | ||
2472 | return 0; | |
2473 | } | |
2474 | ||
2475 | static void lan78xx_deferred_vlan_write(struct work_struct *param) | |
2476 | { | |
2477 | struct lan78xx_priv *pdata = | |
2478 | container_of(param, struct lan78xx_priv, set_vlan); | |
2479 | struct lan78xx_net *dev = pdata->dev; | |
2480 | ||
2481 | lan78xx_dataport_write(dev, DP_SEL_RSEL_VLAN_DA_, 0, | |
2482 | DP_SEL_VHF_VLAN_LEN, pdata->vlan_table); | |
2483 | } | |
2484 | ||
2485 | static int lan78xx_vlan_rx_add_vid(struct net_device *netdev, | |
2486 | __be16 proto, u16 vid) | |
2487 | { | |
2488 | struct lan78xx_net *dev = netdev_priv(netdev); | |
2489 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
2490 | u16 vid_bit_index; | |
2491 | u16 vid_dword_index; | |
2492 | ||
2493 | vid_dword_index = (vid >> 5) & 0x7F; | |
2494 | vid_bit_index = vid & 0x1F; | |
2495 | ||
2496 | pdata->vlan_table[vid_dword_index] |= (1 << vid_bit_index); | |
2497 | ||
2498 | /* defer register writes to a sleepable context */ | |
2499 | schedule_work(&pdata->set_vlan); | |
2500 | ||
2501 | return 0; | |
2502 | } | |
2503 | ||
2504 | static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev, | |
2505 | __be16 proto, u16 vid) | |
2506 | { | |
2507 | struct lan78xx_net *dev = netdev_priv(netdev); | |
2508 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
2509 | u16 vid_bit_index; | |
2510 | u16 vid_dword_index; | |
2511 | ||
2512 | vid_dword_index = (vid >> 5) & 0x7F; | |
2513 | vid_bit_index = vid & 0x1F; | |
2514 | ||
2515 | pdata->vlan_table[vid_dword_index] &= ~(1 << vid_bit_index); | |
2516 | ||
2517 | /* defer register writes to a sleepable context */ | |
2518 | schedule_work(&pdata->set_vlan); | |
2519 | ||
2520 | return 0; | |
2521 | } | |
2522 | ||
2523 | static void lan78xx_init_ltm(struct lan78xx_net *dev) | |
2524 | { | |
2525 | int ret; | |
2526 | u32 buf; | |
2527 | u32 regs[6] = { 0 }; | |
2528 | ||
2529 | ret = lan78xx_read_reg(dev, USB_CFG1, &buf); | |
2530 | if (buf & USB_CFG1_LTM_ENABLE_) { | |
2531 | u8 temp[2]; | |
2532 | /* Get values from EEPROM first */ | |
2533 | if (lan78xx_read_eeprom(dev, 0x3F, 2, temp) == 0) { | |
2534 | if (temp[0] == 24) { | |
2535 | ret = lan78xx_read_raw_eeprom(dev, | |
2536 | temp[1] * 2, | |
2537 | 24, | |
2538 | (u8 *)regs); | |
2539 | if (ret < 0) | |
2540 | return; | |
2541 | } | |
2542 | } else if (lan78xx_read_otp(dev, 0x3F, 2, temp) == 0) { | |
2543 | if (temp[0] == 24) { | |
2544 | ret = lan78xx_read_raw_otp(dev, | |
2545 | temp[1] * 2, | |
2546 | 24, | |
2547 | (u8 *)regs); | |
2548 | if (ret < 0) | |
2549 | return; | |
2550 | } | |
2551 | } | |
2552 | } | |
2553 | ||
2554 | lan78xx_write_reg(dev, LTM_BELT_IDLE0, regs[0]); | |
2555 | lan78xx_write_reg(dev, LTM_BELT_IDLE1, regs[1]); | |
2556 | lan78xx_write_reg(dev, LTM_BELT_ACT0, regs[2]); | |
2557 | lan78xx_write_reg(dev, LTM_BELT_ACT1, regs[3]); | |
2558 | lan78xx_write_reg(dev, LTM_INACTIVE0, regs[4]); | |
2559 | lan78xx_write_reg(dev, LTM_INACTIVE1, regs[5]); | |
2560 | } | |
2561 | ||
2562 | static int lan78xx_start_hw(struct lan78xx_net *dev, u32 reg, u32 hw_enable) | |
2563 | { | |
2564 | return lan78xx_update_reg(dev, reg, hw_enable, hw_enable); | |
2565 | } | |
2566 | ||
2567 | static int lan78xx_stop_hw(struct lan78xx_net *dev, u32 reg, u32 hw_enabled, | |
2568 | u32 hw_disabled) | |
2569 | { | |
2570 | unsigned long timeout; | |
2571 | bool stopped = true; | |
2572 | int ret; | |
2573 | u32 buf; | |
2574 | ||
2575 | /* Stop the h/w block (if not already stopped) */ | |
2576 | ||
2577 | ret = lan78xx_read_reg(dev, reg, &buf); | |
2578 | if (ret < 0) | |
2579 | return ret; | |
2580 | ||
2581 | if (buf & hw_enabled) { | |
2582 | buf &= ~hw_enabled; | |
2583 | ||
2584 | ret = lan78xx_write_reg(dev, reg, buf); | |
2585 | if (ret < 0) | |
2586 | return ret; | |
2587 | ||
2588 | stopped = false; | |
2589 | timeout = jiffies + HW_DISABLE_TIMEOUT; | |
2590 | do { | |
2591 | ret = lan78xx_read_reg(dev, reg, &buf); | |
2592 | if (ret < 0) | |
2593 | return ret; | |
2594 | ||
2595 | if (buf & hw_disabled) | |
2596 | stopped = true; | |
2597 | else | |
2598 | msleep(HW_DISABLE_DELAY_MS); | |
2599 | } while (!stopped && !time_after(jiffies, timeout)); | |
2600 | } | |
2601 | ||
2602 | ret = stopped ? 0 : -ETIME; | |
2603 | ||
2604 | return ret; | |
2605 | } | |
2606 | ||
2607 | static int lan78xx_flush_fifo(struct lan78xx_net *dev, u32 reg, u32 fifo_flush) | |
2608 | { | |
2609 | return lan78xx_update_reg(dev, reg, fifo_flush, fifo_flush); | |
2610 | } | |
2611 | ||
2612 | static int lan78xx_start_tx_path(struct lan78xx_net *dev) | |
2613 | { | |
2614 | int ret; | |
2615 | ||
2616 | netif_dbg(dev, drv, dev->net, "start tx path"); | |
2617 | ||
2618 | /* Start the MAC transmitter */ | |
2619 | ||
2620 | ret = lan78xx_start_hw(dev, MAC_TX, MAC_TX_TXEN_); | |
2621 | if (ret < 0) | |
2622 | return ret; | |
2623 | ||
2624 | /* Start the Tx FIFO */ | |
2625 | ||
2626 | ret = lan78xx_start_hw(dev, FCT_TX_CTL, FCT_TX_CTL_EN_); | |
2627 | if (ret < 0) | |
2628 | return ret; | |
2629 | ||
2630 | return 0; | |
2631 | } | |
2632 | ||
2633 | static int lan78xx_stop_tx_path(struct lan78xx_net *dev) | |
2634 | { | |
2635 | int ret; | |
2636 | ||
2637 | netif_dbg(dev, drv, dev->net, "stop tx path"); | |
2638 | ||
2639 | /* Stop the Tx FIFO */ | |
2640 | ||
2641 | ret = lan78xx_stop_hw(dev, FCT_TX_CTL, FCT_TX_CTL_EN_, FCT_TX_CTL_DIS_); | |
2642 | if (ret < 0) | |
2643 | return ret; | |
2644 | ||
2645 | /* Stop the MAC transmitter */ | |
2646 | ||
2647 | ret = lan78xx_stop_hw(dev, MAC_TX, MAC_TX_TXEN_, MAC_TX_TXD_); | |
2648 | if (ret < 0) | |
2649 | return ret; | |
2650 | ||
2651 | return 0; | |
2652 | } | |
2653 | ||
2654 | /* The caller must ensure the Tx path is stopped before calling | |
2655 | * lan78xx_flush_tx_fifo(). | |
2656 | */ | |
2657 | static int lan78xx_flush_tx_fifo(struct lan78xx_net *dev) | |
2658 | { | |
2659 | return lan78xx_flush_fifo(dev, FCT_TX_CTL, FCT_TX_CTL_RST_); | |
2660 | } | |
2661 | ||
2662 | static int lan78xx_start_rx_path(struct lan78xx_net *dev) | |
2663 | { | |
2664 | int ret; | |
2665 | ||
2666 | netif_dbg(dev, drv, dev->net, "start rx path"); | |
2667 | ||
2668 | /* Start the Rx FIFO */ | |
2669 | ||
2670 | ret = lan78xx_start_hw(dev, FCT_RX_CTL, FCT_RX_CTL_EN_); | |
2671 | if (ret < 0) | |
2672 | return ret; | |
2673 | ||
2674 | /* Start the MAC receiver*/ | |
2675 | ||
2676 | ret = lan78xx_start_hw(dev, MAC_RX, MAC_RX_RXEN_); | |
2677 | if (ret < 0) | |
2678 | return ret; | |
2679 | ||
2680 | return 0; | |
2681 | } | |
2682 | ||
2683 | static int lan78xx_stop_rx_path(struct lan78xx_net *dev) | |
2684 | { | |
2685 | int ret; | |
2686 | ||
2687 | netif_dbg(dev, drv, dev->net, "stop rx path"); | |
2688 | ||
2689 | /* Stop the MAC receiver */ | |
2690 | ||
2691 | ret = lan78xx_stop_hw(dev, MAC_RX, MAC_RX_RXEN_, MAC_RX_RXD_); | |
2692 | if (ret < 0) | |
2693 | return ret; | |
2694 | ||
2695 | /* Stop the Rx FIFO */ | |
2696 | ||
2697 | ret = lan78xx_stop_hw(dev, FCT_RX_CTL, FCT_RX_CTL_EN_, FCT_RX_CTL_DIS_); | |
2698 | if (ret < 0) | |
2699 | return ret; | |
2700 | ||
2701 | return 0; | |
2702 | } | |
2703 | ||
2704 | /* The caller must ensure the Rx path is stopped before calling | |
2705 | * lan78xx_flush_rx_fifo(). | |
2706 | */ | |
2707 | static int lan78xx_flush_rx_fifo(struct lan78xx_net *dev) | |
2708 | { | |
2709 | return lan78xx_flush_fifo(dev, FCT_RX_CTL, FCT_RX_CTL_RST_); | |
2710 | } | |
2711 | ||
2712 | static int lan78xx_reset(struct lan78xx_net *dev) | |
2713 | { | |
2714 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
2715 | unsigned long timeout; | |
2716 | int ret; | |
2717 | u32 buf; | |
2718 | u8 sig; | |
2719 | ||
2720 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); | |
2721 | if (ret < 0) | |
2722 | return ret; | |
2723 | ||
2724 | buf |= HW_CFG_LRST_; | |
2725 | ||
2726 | ret = lan78xx_write_reg(dev, HW_CFG, buf); | |
2727 | if (ret < 0) | |
2728 | return ret; | |
2729 | ||
2730 | timeout = jiffies + HZ; | |
2731 | do { | |
2732 | mdelay(1); | |
2733 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); | |
2734 | if (ret < 0) | |
2735 | return ret; | |
2736 | ||
2737 | if (time_after(jiffies, timeout)) { | |
2738 | netdev_warn(dev->net, | |
2739 | "timeout on completion of LiteReset"); | |
2740 | ret = -ETIMEDOUT; | |
2741 | return ret; | |
2742 | } | |
2743 | } while (buf & HW_CFG_LRST_); | |
2744 | ||
2745 | lan78xx_init_mac_address(dev); | |
2746 | ||
2747 | /* save DEVID for later usage */ | |
2748 | ret = lan78xx_read_reg(dev, ID_REV, &buf); | |
2749 | if (ret < 0) | |
2750 | return ret; | |
2751 | ||
2752 | dev->chipid = (buf & ID_REV_CHIP_ID_MASK_) >> 16; | |
2753 | dev->chiprev = buf & ID_REV_CHIP_REV_MASK_; | |
2754 | ||
2755 | /* Respond to the IN token with a NAK */ | |
2756 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); | |
2757 | if (ret < 0) | |
2758 | return ret; | |
2759 | ||
2760 | buf |= USB_CFG_BIR_; | |
2761 | ||
2762 | ret = lan78xx_write_reg(dev, USB_CFG0, buf); | |
2763 | if (ret < 0) | |
2764 | return ret; | |
2765 | ||
2766 | /* Init LTM */ | |
2767 | lan78xx_init_ltm(dev); | |
2768 | ||
2769 | if (dev->udev->speed == USB_SPEED_SUPER) { | |
2770 | buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE; | |
2771 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; | |
2772 | dev->rx_qlen = 4; | |
2773 | dev->tx_qlen = 4; | |
2774 | } else if (dev->udev->speed == USB_SPEED_HIGH) { | |
2775 | buf = DEFAULT_BURST_CAP_SIZE / HS_USB_PKT_SIZE; | |
2776 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; | |
2777 | dev->rx_qlen = RX_MAX_QUEUE_MEMORY / dev->rx_urb_size; | |
2778 | dev->tx_qlen = RX_MAX_QUEUE_MEMORY / dev->hard_mtu; | |
2779 | } else { | |
2780 | buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE; | |
2781 | dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; | |
2782 | dev->rx_qlen = 4; | |
2783 | dev->tx_qlen = 4; | |
2784 | } | |
2785 | ||
2786 | ret = lan78xx_write_reg(dev, BURST_CAP, buf); | |
2787 | if (ret < 0) | |
2788 | return ret; | |
2789 | ||
2790 | ret = lan78xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY); | |
2791 | if (ret < 0) | |
2792 | return ret; | |
2793 | ||
2794 | ret = lan78xx_read_reg(dev, HW_CFG, &buf); | |
2795 | if (ret < 0) | |
2796 | return ret; | |
2797 | ||
2798 | buf |= HW_CFG_MEF_; | |
2799 | ||
2800 | ret = lan78xx_write_reg(dev, HW_CFG, buf); | |
2801 | if (ret < 0) | |
2802 | return ret; | |
2803 | ||
2804 | ret = lan78xx_read_reg(dev, USB_CFG0, &buf); | |
2805 | if (ret < 0) | |
2806 | return ret; | |
2807 | ||
2808 | buf |= USB_CFG_BCE_; | |
2809 | ||
2810 | ret = lan78xx_write_reg(dev, USB_CFG0, buf); | |
2811 | if (ret < 0) | |
2812 | return ret; | |
2813 | ||
2814 | /* set FIFO sizes */ | |
2815 | buf = (MAX_RX_FIFO_SIZE - 512) / 512; | |
2816 | ||
2817 | ret = lan78xx_write_reg(dev, FCT_RX_FIFO_END, buf); | |
2818 | if (ret < 0) | |
2819 | return ret; | |
2820 | ||
2821 | buf = (MAX_TX_FIFO_SIZE - 512) / 512; | |
2822 | ||
2823 | ret = lan78xx_write_reg(dev, FCT_TX_FIFO_END, buf); | |
2824 | if (ret < 0) | |
2825 | return ret; | |
2826 | ||
2827 | ret = lan78xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_); | |
2828 | if (ret < 0) | |
2829 | return ret; | |
2830 | ||
2831 | ret = lan78xx_write_reg(dev, FLOW, 0); | |
2832 | if (ret < 0) | |
2833 | return ret; | |
2834 | ||
2835 | ret = lan78xx_write_reg(dev, FCT_FLOW, 0); | |
2836 | if (ret < 0) | |
2837 | return ret; | |
2838 | ||
2839 | /* Don't need rfe_ctl_lock during initialisation */ | |
2840 | ret = lan78xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl); | |
2841 | if (ret < 0) | |
2842 | return ret; | |
2843 | ||
2844 | pdata->rfe_ctl |= RFE_CTL_BCAST_EN_ | RFE_CTL_DA_PERFECT_; | |
2845 | ||
2846 | ret = lan78xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl); | |
2847 | if (ret < 0) | |
2848 | return ret; | |
2849 | ||
2850 | /* Enable or disable checksum offload engines */ | |
2851 | ret = lan78xx_set_features(dev->net, dev->net->features); | |
2852 | if (ret < 0) | |
2853 | return ret; | |
2854 | ||
2855 | lan78xx_set_multicast(dev->net); | |
2856 | ||
2857 | /* reset PHY */ | |
2858 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
2859 | if (ret < 0) | |
2860 | return ret; | |
2861 | ||
2862 | buf |= PMT_CTL_PHY_RST_; | |
2863 | ||
2864 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
2865 | if (ret < 0) | |
2866 | return ret; | |
2867 | ||
2868 | timeout = jiffies + HZ; | |
2869 | do { | |
2870 | mdelay(1); | |
2871 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
2872 | if (ret < 0) | |
2873 | return ret; | |
2874 | ||
2875 | if (time_after(jiffies, timeout)) { | |
2876 | netdev_warn(dev->net, "timeout waiting for PHY Reset"); | |
2877 | ret = -ETIMEDOUT; | |
2878 | return ret; | |
2879 | } | |
2880 | } while ((buf & PMT_CTL_PHY_RST_) || !(buf & PMT_CTL_READY_)); | |
2881 | ||
2882 | ret = lan78xx_read_reg(dev, MAC_CR, &buf); | |
2883 | if (ret < 0) | |
2884 | return ret; | |
2885 | ||
2886 | /* LAN7801 only has RGMII mode */ | |
2887 | if (dev->chipid == ID_REV_CHIP_ID_7801_) | |
2888 | buf &= ~MAC_CR_GMII_EN_; | |
2889 | ||
2890 | if (dev->chipid == ID_REV_CHIP_ID_7800_) { | |
2891 | ret = lan78xx_read_raw_eeprom(dev, 0, 1, &sig); | |
2892 | if (!ret && sig != EEPROM_INDICATOR) { | |
2893 | /* Implies there is no external eeprom. Set mac speed */ | |
2894 | netdev_info(dev->net, "No External EEPROM. Setting MAC Speed\n"); | |
2895 | buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_; | |
2896 | } | |
2897 | } | |
2898 | ret = lan78xx_write_reg(dev, MAC_CR, buf); | |
2899 | if (ret < 0) | |
2900 | return ret; | |
2901 | ||
2902 | ret = lan78xx_set_rx_max_frame_length(dev, | |
2903 | dev->net->mtu + VLAN_ETH_HLEN); | |
2904 | ||
2905 | return ret; | |
2906 | } | |
2907 | ||
2908 | static void lan78xx_init_stats(struct lan78xx_net *dev) | |
2909 | { | |
2910 | u32 *p; | |
2911 | int i; | |
2912 | ||
2913 | /* initialize for stats update | |
2914 | * some counters are 20bits and some are 32bits | |
2915 | */ | |
2916 | p = (u32 *)&dev->stats.rollover_max; | |
2917 | for (i = 0; i < (sizeof(dev->stats.rollover_max) / (sizeof(u32))); i++) | |
2918 | p[i] = 0xFFFFF; | |
2919 | ||
2920 | dev->stats.rollover_max.rx_unicast_byte_count = 0xFFFFFFFF; | |
2921 | dev->stats.rollover_max.rx_broadcast_byte_count = 0xFFFFFFFF; | |
2922 | dev->stats.rollover_max.rx_multicast_byte_count = 0xFFFFFFFF; | |
2923 | dev->stats.rollover_max.eee_rx_lpi_transitions = 0xFFFFFFFF; | |
2924 | dev->stats.rollover_max.eee_rx_lpi_time = 0xFFFFFFFF; | |
2925 | dev->stats.rollover_max.tx_unicast_byte_count = 0xFFFFFFFF; | |
2926 | dev->stats.rollover_max.tx_broadcast_byte_count = 0xFFFFFFFF; | |
2927 | dev->stats.rollover_max.tx_multicast_byte_count = 0xFFFFFFFF; | |
2928 | dev->stats.rollover_max.eee_tx_lpi_transitions = 0xFFFFFFFF; | |
2929 | dev->stats.rollover_max.eee_tx_lpi_time = 0xFFFFFFFF; | |
2930 | ||
2931 | set_bit(EVENT_STAT_UPDATE, &dev->flags); | |
2932 | } | |
2933 | ||
2934 | static int lan78xx_open(struct net_device *net) | |
2935 | { | |
2936 | struct lan78xx_net *dev = netdev_priv(net); | |
2937 | int ret; | |
2938 | ||
2939 | netif_dbg(dev, ifup, dev->net, "open device"); | |
2940 | ||
2941 | ret = usb_autopm_get_interface(dev->intf); | |
2942 | if (ret < 0) | |
2943 | return ret; | |
2944 | ||
2945 | mutex_lock(&dev->dev_mutex); | |
2946 | ||
2947 | phy_start(net->phydev); | |
2948 | ||
2949 | netif_dbg(dev, ifup, dev->net, "phy initialised successfully"); | |
2950 | ||
2951 | /* for Link Check */ | |
2952 | if (dev->urb_intr) { | |
2953 | ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL); | |
2954 | if (ret < 0) { | |
2955 | netif_err(dev, ifup, dev->net, | |
2956 | "intr submit %d\n", ret); | |
2957 | goto done; | |
2958 | } | |
2959 | } | |
2960 | ||
2961 | ret = lan78xx_flush_rx_fifo(dev); | |
2962 | if (ret < 0) | |
2963 | goto done; | |
2964 | ret = lan78xx_flush_tx_fifo(dev); | |
2965 | if (ret < 0) | |
2966 | goto done; | |
2967 | ||
2968 | ret = lan78xx_start_tx_path(dev); | |
2969 | if (ret < 0) | |
2970 | goto done; | |
2971 | ret = lan78xx_start_rx_path(dev); | |
2972 | if (ret < 0) | |
2973 | goto done; | |
2974 | ||
2975 | lan78xx_init_stats(dev); | |
2976 | ||
2977 | set_bit(EVENT_DEV_OPEN, &dev->flags); | |
2978 | ||
2979 | netif_start_queue(net); | |
2980 | ||
2981 | dev->link_on = false; | |
2982 | ||
2983 | lan78xx_defer_kevent(dev, EVENT_LINK_RESET); | |
2984 | done: | |
2985 | mutex_unlock(&dev->dev_mutex); | |
2986 | ||
2987 | usb_autopm_put_interface(dev->intf); | |
2988 | ||
2989 | return ret; | |
2990 | } | |
2991 | ||
2992 | static void lan78xx_terminate_urbs(struct lan78xx_net *dev) | |
2993 | { | |
2994 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(unlink_wakeup); | |
2995 | DECLARE_WAITQUEUE(wait, current); | |
2996 | int temp; | |
2997 | ||
2998 | /* ensure there are no more active urbs */ | |
2999 | add_wait_queue(&unlink_wakeup, &wait); | |
3000 | set_current_state(TASK_UNINTERRUPTIBLE); | |
3001 | dev->wait = &unlink_wakeup; | |
3002 | temp = unlink_urbs(dev, &dev->txq) + unlink_urbs(dev, &dev->rxq); | |
3003 | ||
3004 | /* maybe wait for deletions to finish. */ | |
3005 | while (!skb_queue_empty(&dev->rxq) || | |
3006 | !skb_queue_empty(&dev->txq)) { | |
3007 | schedule_timeout(msecs_to_jiffies(UNLINK_TIMEOUT_MS)); | |
3008 | set_current_state(TASK_UNINTERRUPTIBLE); | |
3009 | netif_dbg(dev, ifdown, dev->net, | |
3010 | "waited for %d urb completions", temp); | |
3011 | } | |
3012 | set_current_state(TASK_RUNNING); | |
3013 | dev->wait = NULL; | |
3014 | remove_wait_queue(&unlink_wakeup, &wait); | |
3015 | ||
3016 | while (!skb_queue_empty(&dev->done)) { | |
3017 | struct skb_data *entry; | |
3018 | struct sk_buff *skb; | |
3019 | ||
3020 | skb = skb_dequeue(&dev->done); | |
3021 | entry = (struct skb_data *)(skb->cb); | |
3022 | usb_free_urb(entry->urb); | |
3023 | dev_kfree_skb(skb); | |
3024 | } | |
3025 | } | |
3026 | ||
3027 | static int lan78xx_stop(struct net_device *net) | |
3028 | { | |
3029 | struct lan78xx_net *dev = netdev_priv(net); | |
3030 | ||
3031 | netif_dbg(dev, ifup, dev->net, "stop device"); | |
3032 | ||
3033 | mutex_lock(&dev->dev_mutex); | |
3034 | ||
3035 | if (timer_pending(&dev->stat_monitor)) | |
3036 | del_timer_sync(&dev->stat_monitor); | |
3037 | ||
3038 | clear_bit(EVENT_DEV_OPEN, &dev->flags); | |
3039 | netif_stop_queue(net); | |
3040 | tasklet_kill(&dev->bh); | |
3041 | ||
3042 | lan78xx_terminate_urbs(dev); | |
3043 | ||
3044 | netif_info(dev, ifdown, dev->net, | |
3045 | "stop stats: rx/tx %lu/%lu, errs %lu/%lu\n", | |
3046 | net->stats.rx_packets, net->stats.tx_packets, | |
3047 | net->stats.rx_errors, net->stats.tx_errors); | |
3048 | ||
3049 | /* ignore errors that occur stopping the Tx and Rx data paths */ | |
3050 | lan78xx_stop_tx_path(dev); | |
3051 | lan78xx_stop_rx_path(dev); | |
3052 | ||
3053 | if (net->phydev) | |
3054 | phy_stop(net->phydev); | |
3055 | ||
3056 | usb_kill_urb(dev->urb_intr); | |
3057 | ||
3058 | /* deferred work (task, timer, softirq) must also stop. | |
3059 | * can't flush_scheduled_work() until we drop rtnl (later), | |
3060 | * else workers could deadlock; so make workers a NOP. | |
3061 | */ | |
3062 | clear_bit(EVENT_TX_HALT, &dev->flags); | |
3063 | clear_bit(EVENT_RX_HALT, &dev->flags); | |
3064 | clear_bit(EVENT_LINK_RESET, &dev->flags); | |
3065 | clear_bit(EVENT_STAT_UPDATE, &dev->flags); | |
3066 | ||
3067 | cancel_delayed_work_sync(&dev->wq); | |
3068 | ||
3069 | usb_autopm_put_interface(dev->intf); | |
3070 | ||
3071 | mutex_unlock(&dev->dev_mutex); | |
3072 | ||
3073 | return 0; | |
3074 | } | |
3075 | ||
3076 | static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev, | |
3077 | struct sk_buff *skb, gfp_t flags) | |
3078 | { | |
3079 | u32 tx_cmd_a, tx_cmd_b; | |
3080 | void *ptr; | |
3081 | ||
3082 | if (skb_cow_head(skb, TX_OVERHEAD)) { | |
3083 | dev_kfree_skb_any(skb); | |
3084 | return NULL; | |
3085 | } | |
3086 | ||
3087 | if (skb_linearize(skb)) { | |
3088 | dev_kfree_skb_any(skb); | |
3089 | return NULL; | |
3090 | } | |
3091 | ||
3092 | tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_; | |
3093 | ||
3094 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
3095 | tx_cmd_a |= TX_CMD_A_IPE_ | TX_CMD_A_TPE_; | |
3096 | ||
3097 | tx_cmd_b = 0; | |
3098 | if (skb_is_gso(skb)) { | |
3099 | u16 mss = max(skb_shinfo(skb)->gso_size, TX_CMD_B_MSS_MIN_); | |
3100 | ||
3101 | tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT_) & TX_CMD_B_MSS_MASK_; | |
3102 | ||
3103 | tx_cmd_a |= TX_CMD_A_LSO_; | |
3104 | } | |
3105 | ||
3106 | if (skb_vlan_tag_present(skb)) { | |
3107 | tx_cmd_a |= TX_CMD_A_IVTG_; | |
3108 | tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_; | |
3109 | } | |
3110 | ||
3111 | ptr = skb_push(skb, 8); | |
3112 | put_unaligned_le32(tx_cmd_a, ptr); | |
3113 | put_unaligned_le32(tx_cmd_b, ptr + 4); | |
3114 | ||
3115 | return skb; | |
3116 | } | |
3117 | ||
3118 | static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb, | |
3119 | struct sk_buff_head *list, enum skb_state state) | |
3120 | { | |
3121 | unsigned long flags; | |
3122 | enum skb_state old_state; | |
3123 | struct skb_data *entry = (struct skb_data *)skb->cb; | |
3124 | ||
3125 | spin_lock_irqsave(&list->lock, flags); | |
3126 | old_state = entry->state; | |
3127 | entry->state = state; | |
3128 | ||
3129 | __skb_unlink(skb, list); | |
3130 | spin_unlock(&list->lock); | |
3131 | spin_lock(&dev->done.lock); | |
3132 | ||
3133 | __skb_queue_tail(&dev->done, skb); | |
3134 | if (skb_queue_len(&dev->done) == 1) | |
3135 | tasklet_schedule(&dev->bh); | |
3136 | spin_unlock_irqrestore(&dev->done.lock, flags); | |
3137 | ||
3138 | return old_state; | |
3139 | } | |
3140 | ||
3141 | static void tx_complete(struct urb *urb) | |
3142 | { | |
3143 | struct sk_buff *skb = (struct sk_buff *)urb->context; | |
3144 | struct skb_data *entry = (struct skb_data *)skb->cb; | |
3145 | struct lan78xx_net *dev = entry->dev; | |
3146 | ||
3147 | if (urb->status == 0) { | |
3148 | dev->net->stats.tx_packets += entry->num_of_packet; | |
3149 | dev->net->stats.tx_bytes += entry->length; | |
3150 | } else { | |
3151 | dev->net->stats.tx_errors++; | |
3152 | ||
3153 | switch (urb->status) { | |
3154 | case -EPIPE: | |
3155 | lan78xx_defer_kevent(dev, EVENT_TX_HALT); | |
3156 | break; | |
3157 | ||
3158 | /* software-driven interface shutdown */ | |
3159 | case -ECONNRESET: | |
3160 | case -ESHUTDOWN: | |
3161 | netif_dbg(dev, tx_err, dev->net, | |
3162 | "tx err interface gone %d\n", | |
3163 | entry->urb->status); | |
3164 | break; | |
3165 | ||
3166 | case -EPROTO: | |
3167 | case -ETIME: | |
3168 | case -EILSEQ: | |
3169 | netif_stop_queue(dev->net); | |
3170 | netif_dbg(dev, tx_err, dev->net, | |
3171 | "tx err queue stopped %d\n", | |
3172 | entry->urb->status); | |
3173 | break; | |
3174 | default: | |
3175 | netif_dbg(dev, tx_err, dev->net, | |
3176 | "unknown tx err %d\n", | |
3177 | entry->urb->status); | |
3178 | break; | |
3179 | } | |
3180 | } | |
3181 | ||
3182 | usb_autopm_put_interface_async(dev->intf); | |
3183 | ||
3184 | defer_bh(dev, skb, &dev->txq, tx_done); | |
3185 | } | |
3186 | ||
3187 | static void lan78xx_queue_skb(struct sk_buff_head *list, | |
3188 | struct sk_buff *newsk, enum skb_state state) | |
3189 | { | |
3190 | struct skb_data *entry = (struct skb_data *)newsk->cb; | |
3191 | ||
3192 | __skb_queue_tail(list, newsk); | |
3193 | entry->state = state; | |
3194 | } | |
3195 | ||
3196 | static netdev_tx_t | |
3197 | lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) | |
3198 | { | |
3199 | struct lan78xx_net *dev = netdev_priv(net); | |
3200 | struct sk_buff *skb2 = NULL; | |
3201 | ||
3202 | if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) | |
3203 | schedule_delayed_work(&dev->wq, 0); | |
3204 | ||
3205 | if (skb) { | |
3206 | skb_tx_timestamp(skb); | |
3207 | skb2 = lan78xx_tx_prep(dev, skb, GFP_ATOMIC); | |
3208 | } | |
3209 | ||
3210 | if (skb2) { | |
3211 | skb_queue_tail(&dev->txq_pend, skb2); | |
3212 | ||
3213 | /* throttle TX patch at slower than SUPER SPEED USB */ | |
3214 | if ((dev->udev->speed < USB_SPEED_SUPER) && | |
3215 | (skb_queue_len(&dev->txq_pend) > 10)) | |
3216 | netif_stop_queue(net); | |
3217 | } else { | |
3218 | netif_dbg(dev, tx_err, dev->net, | |
3219 | "lan78xx_tx_prep return NULL\n"); | |
3220 | dev->net->stats.tx_errors++; | |
3221 | dev->net->stats.tx_dropped++; | |
3222 | } | |
3223 | ||
3224 | tasklet_schedule(&dev->bh); | |
3225 | ||
3226 | return NETDEV_TX_OK; | |
3227 | } | |
3228 | ||
3229 | static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf) | |
3230 | { | |
3231 | struct lan78xx_priv *pdata = NULL; | |
3232 | int ret; | |
3233 | int i; | |
3234 | ||
3235 | dev->data[0] = (unsigned long)kzalloc(sizeof(*pdata), GFP_KERNEL); | |
3236 | ||
3237 | pdata = (struct lan78xx_priv *)(dev->data[0]); | |
3238 | if (!pdata) { | |
3239 | netdev_warn(dev->net, "Unable to allocate lan78xx_priv"); | |
3240 | return -ENOMEM; | |
3241 | } | |
3242 | ||
3243 | pdata->dev = dev; | |
3244 | ||
3245 | spin_lock_init(&pdata->rfe_ctl_lock); | |
3246 | mutex_init(&pdata->dataport_mutex); | |
3247 | ||
3248 | INIT_WORK(&pdata->set_multicast, lan78xx_deferred_multicast_write); | |
3249 | ||
3250 | for (i = 0; i < DP_SEL_VHF_VLAN_LEN; i++) | |
3251 | pdata->vlan_table[i] = 0; | |
3252 | ||
3253 | INIT_WORK(&pdata->set_vlan, lan78xx_deferred_vlan_write); | |
3254 | ||
3255 | dev->net->features = 0; | |
3256 | ||
3257 | if (DEFAULT_TX_CSUM_ENABLE) | |
3258 | dev->net->features |= NETIF_F_HW_CSUM; | |
3259 | ||
3260 | if (DEFAULT_RX_CSUM_ENABLE) | |
3261 | dev->net->features |= NETIF_F_RXCSUM; | |
3262 | ||
3263 | if (DEFAULT_TSO_CSUM_ENABLE) | |
3264 | dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG; | |
3265 | ||
3266 | if (DEFAULT_VLAN_RX_OFFLOAD) | |
3267 | dev->net->features |= NETIF_F_HW_VLAN_CTAG_RX; | |
3268 | ||
3269 | if (DEFAULT_VLAN_FILTER_ENABLE) | |
3270 | dev->net->features |= NETIF_F_HW_VLAN_CTAG_FILTER; | |
3271 | ||
3272 | dev->net->hw_features = dev->net->features; | |
3273 | ||
3274 | ret = lan78xx_setup_irq_domain(dev); | |
3275 | if (ret < 0) { | |
3276 | netdev_warn(dev->net, | |
3277 | "lan78xx_setup_irq_domain() failed : %d", ret); | |
3278 | goto out1; | |
3279 | } | |
3280 | ||
3281 | dev->net->hard_header_len += TX_OVERHEAD; | |
3282 | dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; | |
3283 | ||
3284 | /* Init all registers */ | |
3285 | ret = lan78xx_reset(dev); | |
3286 | if (ret) { | |
3287 | netdev_warn(dev->net, "Registers INIT FAILED...."); | |
3288 | goto out2; | |
3289 | } | |
3290 | ||
3291 | ret = lan78xx_mdio_init(dev); | |
3292 | if (ret) { | |
3293 | netdev_warn(dev->net, "MDIO INIT FAILED....."); | |
3294 | goto out2; | |
3295 | } | |
3296 | ||
3297 | dev->net->flags |= IFF_MULTICAST; | |
3298 | ||
3299 | pdata->wol = WAKE_MAGIC; | |
3300 | ||
3301 | return ret; | |
3302 | ||
3303 | out2: | |
3304 | lan78xx_remove_irq_domain(dev); | |
3305 | ||
3306 | out1: | |
3307 | netdev_warn(dev->net, "Bind routine FAILED"); | |
3308 | cancel_work_sync(&pdata->set_multicast); | |
3309 | cancel_work_sync(&pdata->set_vlan); | |
3310 | kfree(pdata); | |
3311 | return ret; | |
3312 | } | |
3313 | ||
3314 | static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf) | |
3315 | { | |
3316 | struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]); | |
3317 | ||
3318 | lan78xx_remove_irq_domain(dev); | |
3319 | ||
3320 | lan78xx_remove_mdio(dev); | |
3321 | ||
3322 | if (pdata) { | |
3323 | cancel_work_sync(&pdata->set_multicast); | |
3324 | cancel_work_sync(&pdata->set_vlan); | |
3325 | netif_dbg(dev, ifdown, dev->net, "free pdata"); | |
3326 | kfree(pdata); | |
3327 | pdata = NULL; | |
3328 | dev->data[0] = 0; | |
3329 | } | |
3330 | } | |
3331 | ||
3332 | static void lan78xx_rx_csum_offload(struct lan78xx_net *dev, | |
3333 | struct sk_buff *skb, | |
3334 | u32 rx_cmd_a, u32 rx_cmd_b) | |
3335 | { | |
3336 | /* HW Checksum offload appears to be flawed if used when not stripping | |
3337 | * VLAN headers. Drop back to S/W checksums under these conditions. | |
3338 | */ | |
3339 | if (!(dev->net->features & NETIF_F_RXCSUM) || | |
3340 | unlikely(rx_cmd_a & RX_CMD_A_ICSM_) || | |
3341 | ((rx_cmd_a & RX_CMD_A_FVTG_) && | |
3342 | !(dev->net->features & NETIF_F_HW_VLAN_CTAG_RX))) { | |
3343 | skb->ip_summed = CHECKSUM_NONE; | |
3344 | } else { | |
3345 | skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT_)); | |
3346 | skb->ip_summed = CHECKSUM_COMPLETE; | |
3347 | } | |
3348 | } | |
3349 | ||
3350 | static void lan78xx_rx_vlan_offload(struct lan78xx_net *dev, | |
3351 | struct sk_buff *skb, | |
3352 | u32 rx_cmd_a, u32 rx_cmd_b) | |
3353 | { | |
3354 | if ((dev->net->features & NETIF_F_HW_VLAN_CTAG_RX) && | |
3355 | (rx_cmd_a & RX_CMD_A_FVTG_)) | |
3356 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), | |
3357 | (rx_cmd_b & 0xffff)); | |
3358 | } | |
3359 | ||
3360 | static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb) | |
3361 | { | |
3362 | int status; | |
3363 | ||
3364 | dev->net->stats.rx_packets++; | |
3365 | dev->net->stats.rx_bytes += skb->len; | |
3366 | ||
3367 | skb->protocol = eth_type_trans(skb, dev->net); | |
3368 | ||
3369 | netif_dbg(dev, rx_status, dev->net, "< rx, len %zu, type 0x%x\n", | |
3370 | skb->len + sizeof(struct ethhdr), skb->protocol); | |
3371 | memset(skb->cb, 0, sizeof(struct skb_data)); | |
3372 | ||
3373 | if (skb_defer_rx_timestamp(skb)) | |
3374 | return; | |
3375 | ||
3376 | status = netif_rx(skb); | |
3377 | if (status != NET_RX_SUCCESS) | |
3378 | netif_dbg(dev, rx_err, dev->net, | |
3379 | "netif_rx status %d\n", status); | |
3380 | } | |
3381 | ||
3382 | static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb) | |
3383 | { | |
3384 | if (skb->len < dev->net->hard_header_len) | |
3385 | return 0; | |
3386 | ||
3387 | while (skb->len > 0) { | |
3388 | u32 rx_cmd_a, rx_cmd_b, align_count, size; | |
3389 | u16 rx_cmd_c; | |
3390 | struct sk_buff *skb2; | |
3391 | unsigned char *packet; | |
3392 | ||
3393 | rx_cmd_a = get_unaligned_le32(skb->data); | |
3394 | skb_pull(skb, sizeof(rx_cmd_a)); | |
3395 | ||
3396 | rx_cmd_b = get_unaligned_le32(skb->data); | |
3397 | skb_pull(skb, sizeof(rx_cmd_b)); | |
3398 | ||
3399 | rx_cmd_c = get_unaligned_le16(skb->data); | |
3400 | skb_pull(skb, sizeof(rx_cmd_c)); | |
3401 | ||
3402 | packet = skb->data; | |
3403 | ||
3404 | /* get the packet length */ | |
3405 | size = (rx_cmd_a & RX_CMD_A_LEN_MASK_); | |
3406 | align_count = (4 - ((size + RXW_PADDING) % 4)) % 4; | |
3407 | ||
3408 | if (unlikely(rx_cmd_a & RX_CMD_A_RED_)) { | |
3409 | netif_dbg(dev, rx_err, dev->net, | |
3410 | "Error rx_cmd_a=0x%08x", rx_cmd_a); | |
3411 | } else { | |
3412 | /* last frame in this batch */ | |
3413 | if (skb->len == size) { | |
3414 | lan78xx_rx_csum_offload(dev, skb, | |
3415 | rx_cmd_a, rx_cmd_b); | |
3416 | lan78xx_rx_vlan_offload(dev, skb, | |
3417 | rx_cmd_a, rx_cmd_b); | |
3418 | ||
3419 | skb_trim(skb, skb->len - 4); /* remove fcs */ | |
3420 | skb->truesize = size + sizeof(struct sk_buff); | |
3421 | ||
3422 | return 1; | |
3423 | } | |
3424 | ||
3425 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
3426 | if (unlikely(!skb2)) { | |
3427 | netdev_warn(dev->net, "Error allocating skb"); | |
3428 | return 0; | |
3429 | } | |
3430 | ||
3431 | skb2->len = size; | |
3432 | skb2->data = packet; | |
3433 | skb_set_tail_pointer(skb2, size); | |
3434 | ||
3435 | lan78xx_rx_csum_offload(dev, skb2, rx_cmd_a, rx_cmd_b); | |
3436 | lan78xx_rx_vlan_offload(dev, skb2, rx_cmd_a, rx_cmd_b); | |
3437 | ||
3438 | skb_trim(skb2, skb2->len - 4); /* remove fcs */ | |
3439 | skb2->truesize = size + sizeof(struct sk_buff); | |
3440 | ||
3441 | lan78xx_skb_return(dev, skb2); | |
3442 | } | |
3443 | ||
3444 | skb_pull(skb, size); | |
3445 | ||
3446 | /* padding bytes before the next frame starts */ | |
3447 | if (skb->len) | |
3448 | skb_pull(skb, align_count); | |
3449 | } | |
3450 | ||
3451 | return 1; | |
3452 | } | |
3453 | ||
3454 | static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb) | |
3455 | { | |
3456 | if (!lan78xx_rx(dev, skb)) { | |
3457 | dev->net->stats.rx_errors++; | |
3458 | goto done; | |
3459 | } | |
3460 | ||
3461 | if (skb->len) { | |
3462 | lan78xx_skb_return(dev, skb); | |
3463 | return; | |
3464 | } | |
3465 | ||
3466 | netif_dbg(dev, rx_err, dev->net, "drop\n"); | |
3467 | dev->net->stats.rx_errors++; | |
3468 | done: | |
3469 | skb_queue_tail(&dev->done, skb); | |
3470 | } | |
3471 | ||
3472 | static void rx_complete(struct urb *urb); | |
3473 | ||
3474 | static int rx_submit(struct lan78xx_net *dev, struct urb *urb, gfp_t flags) | |
3475 | { | |
3476 | struct sk_buff *skb; | |
3477 | struct skb_data *entry; | |
3478 | unsigned long lockflags; | |
3479 | size_t size = dev->rx_urb_size; | |
3480 | int ret = 0; | |
3481 | ||
3482 | skb = netdev_alloc_skb_ip_align(dev->net, size); | |
3483 | if (!skb) { | |
3484 | usb_free_urb(urb); | |
3485 | return -ENOMEM; | |
3486 | } | |
3487 | ||
3488 | entry = (struct skb_data *)skb->cb; | |
3489 | entry->urb = urb; | |
3490 | entry->dev = dev; | |
3491 | entry->length = 0; | |
3492 | ||
3493 | usb_fill_bulk_urb(urb, dev->udev, dev->pipe_in, | |
3494 | skb->data, size, rx_complete, skb); | |
3495 | ||
3496 | spin_lock_irqsave(&dev->rxq.lock, lockflags); | |
3497 | ||
3498 | if (netif_device_present(dev->net) && | |
3499 | netif_running(dev->net) && | |
3500 | !test_bit(EVENT_RX_HALT, &dev->flags) && | |
3501 | !test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { | |
3502 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
3503 | switch (ret) { | |
3504 | case 0: | |
3505 | lan78xx_queue_skb(&dev->rxq, skb, rx_start); | |
3506 | break; | |
3507 | case -EPIPE: | |
3508 | lan78xx_defer_kevent(dev, EVENT_RX_HALT); | |
3509 | break; | |
3510 | case -ENODEV: | |
3511 | case -ENOENT: | |
3512 | netif_dbg(dev, ifdown, dev->net, "device gone\n"); | |
3513 | netif_device_detach(dev->net); | |
3514 | break; | |
3515 | case -EHOSTUNREACH: | |
3516 | ret = -ENOLINK; | |
3517 | break; | |
3518 | default: | |
3519 | netif_dbg(dev, rx_err, dev->net, | |
3520 | "rx submit, %d\n", ret); | |
3521 | tasklet_schedule(&dev->bh); | |
3522 | } | |
3523 | } else { | |
3524 | netif_dbg(dev, ifdown, dev->net, "rx: stopped\n"); | |
3525 | ret = -ENOLINK; | |
3526 | } | |
3527 | spin_unlock_irqrestore(&dev->rxq.lock, lockflags); | |
3528 | if (ret) { | |
3529 | dev_kfree_skb_any(skb); | |
3530 | usb_free_urb(urb); | |
3531 | } | |
3532 | return ret; | |
3533 | } | |
3534 | ||
3535 | static void rx_complete(struct urb *urb) | |
3536 | { | |
3537 | struct sk_buff *skb = (struct sk_buff *)urb->context; | |
3538 | struct skb_data *entry = (struct skb_data *)skb->cb; | |
3539 | struct lan78xx_net *dev = entry->dev; | |
3540 | int urb_status = urb->status; | |
3541 | enum skb_state state; | |
3542 | ||
3543 | skb_put(skb, urb->actual_length); | |
3544 | state = rx_done; | |
3545 | entry->urb = NULL; | |
3546 | ||
3547 | switch (urb_status) { | |
3548 | case 0: | |
3549 | if (skb->len < dev->net->hard_header_len) { | |
3550 | state = rx_cleanup; | |
3551 | dev->net->stats.rx_errors++; | |
3552 | dev->net->stats.rx_length_errors++; | |
3553 | netif_dbg(dev, rx_err, dev->net, | |
3554 | "rx length %d\n", skb->len); | |
3555 | } | |
3556 | usb_mark_last_busy(dev->udev); | |
3557 | break; | |
3558 | case -EPIPE: | |
3559 | dev->net->stats.rx_errors++; | |
3560 | lan78xx_defer_kevent(dev, EVENT_RX_HALT); | |
3561 | fallthrough; | |
3562 | case -ECONNRESET: /* async unlink */ | |
3563 | case -ESHUTDOWN: /* hardware gone */ | |
3564 | netif_dbg(dev, ifdown, dev->net, | |
3565 | "rx shutdown, code %d\n", urb_status); | |
3566 | state = rx_cleanup; | |
3567 | entry->urb = urb; | |
3568 | urb = NULL; | |
3569 | break; | |
3570 | case -EPROTO: | |
3571 | case -ETIME: | |
3572 | case -EILSEQ: | |
3573 | dev->net->stats.rx_errors++; | |
3574 | state = rx_cleanup; | |
3575 | entry->urb = urb; | |
3576 | urb = NULL; | |
3577 | break; | |
3578 | ||
3579 | /* data overrun ... flush fifo? */ | |
3580 | case -EOVERFLOW: | |
3581 | dev->net->stats.rx_over_errors++; | |
3582 | fallthrough; | |
3583 | ||
3584 | default: | |
3585 | state = rx_cleanup; | |
3586 | dev->net->stats.rx_errors++; | |
3587 | netif_dbg(dev, rx_err, dev->net, "rx status %d\n", urb_status); | |
3588 | break; | |
3589 | } | |
3590 | ||
3591 | state = defer_bh(dev, skb, &dev->rxq, state); | |
3592 | ||
3593 | if (urb) { | |
3594 | if (netif_running(dev->net) && | |
3595 | !test_bit(EVENT_RX_HALT, &dev->flags) && | |
3596 | state != unlink_start) { | |
3597 | rx_submit(dev, urb, GFP_ATOMIC); | |
3598 | return; | |
3599 | } | |
3600 | usb_free_urb(urb); | |
3601 | } | |
3602 | netif_dbg(dev, rx_err, dev->net, "no read resubmitted\n"); | |
3603 | } | |
3604 | ||
3605 | static void lan78xx_tx_bh(struct lan78xx_net *dev) | |
3606 | { | |
3607 | int length; | |
3608 | struct urb *urb = NULL; | |
3609 | struct skb_data *entry; | |
3610 | unsigned long flags; | |
3611 | struct sk_buff_head *tqp = &dev->txq_pend; | |
3612 | struct sk_buff *skb, *skb2; | |
3613 | int ret; | |
3614 | int count, pos; | |
3615 | int skb_totallen, pkt_cnt; | |
3616 | ||
3617 | skb_totallen = 0; | |
3618 | pkt_cnt = 0; | |
3619 | count = 0; | |
3620 | length = 0; | |
3621 | spin_lock_irqsave(&tqp->lock, flags); | |
3622 | skb_queue_walk(tqp, skb) { | |
3623 | if (skb_is_gso(skb)) { | |
3624 | if (!skb_queue_is_first(tqp, skb)) { | |
3625 | /* handle previous packets first */ | |
3626 | break; | |
3627 | } | |
3628 | count = 1; | |
3629 | length = skb->len - TX_OVERHEAD; | |
3630 | __skb_unlink(skb, tqp); | |
3631 | spin_unlock_irqrestore(&tqp->lock, flags); | |
3632 | goto gso_skb; | |
3633 | } | |
3634 | ||
3635 | if ((skb_totallen + skb->len) > MAX_SINGLE_PACKET_SIZE) | |
3636 | break; | |
3637 | skb_totallen = skb->len + roundup(skb_totallen, sizeof(u32)); | |
3638 | pkt_cnt++; | |
3639 | } | |
3640 | spin_unlock_irqrestore(&tqp->lock, flags); | |
3641 | ||
3642 | /* copy to a single skb */ | |
3643 | skb = alloc_skb(skb_totallen, GFP_ATOMIC); | |
3644 | if (!skb) | |
3645 | goto drop; | |
3646 | ||
3647 | skb_put(skb, skb_totallen); | |
3648 | ||
3649 | for (count = pos = 0; count < pkt_cnt; count++) { | |
3650 | skb2 = skb_dequeue(tqp); | |
3651 | if (skb2) { | |
3652 | length += (skb2->len - TX_OVERHEAD); | |
3653 | memcpy(skb->data + pos, skb2->data, skb2->len); | |
3654 | pos += roundup(skb2->len, sizeof(u32)); | |
3655 | dev_kfree_skb(skb2); | |
3656 | } | |
3657 | } | |
3658 | ||
3659 | gso_skb: | |
3660 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
3661 | if (!urb) | |
3662 | goto drop; | |
3663 | ||
3664 | entry = (struct skb_data *)skb->cb; | |
3665 | entry->urb = urb; | |
3666 | entry->dev = dev; | |
3667 | entry->length = length; | |
3668 | entry->num_of_packet = count; | |
3669 | ||
3670 | spin_lock_irqsave(&dev->txq.lock, flags); | |
3671 | ret = usb_autopm_get_interface_async(dev->intf); | |
3672 | if (ret < 0) { | |
3673 | spin_unlock_irqrestore(&dev->txq.lock, flags); | |
3674 | goto drop; | |
3675 | } | |
3676 | ||
3677 | usb_fill_bulk_urb(urb, dev->udev, dev->pipe_out, | |
3678 | skb->data, skb->len, tx_complete, skb); | |
3679 | ||
3680 | if (length % dev->maxpacket == 0) { | |
3681 | /* send USB_ZERO_PACKET */ | |
3682 | urb->transfer_flags |= URB_ZERO_PACKET; | |
3683 | } | |
3684 | ||
3685 | #ifdef CONFIG_PM | |
3686 | /* if this triggers the device is still a sleep */ | |
3687 | if (test_bit(EVENT_DEV_ASLEEP, &dev->flags)) { | |
3688 | /* transmission will be done in resume */ | |
3689 | usb_anchor_urb(urb, &dev->deferred); | |
3690 | /* no use to process more packets */ | |
3691 | netif_stop_queue(dev->net); | |
3692 | usb_put_urb(urb); | |
3693 | spin_unlock_irqrestore(&dev->txq.lock, flags); | |
3694 | netdev_dbg(dev->net, "Delaying transmission for resumption\n"); | |
3695 | return; | |
3696 | } | |
3697 | #endif | |
3698 | ||
3699 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
3700 | switch (ret) { | |
3701 | case 0: | |
3702 | netif_trans_update(dev->net); | |
3703 | lan78xx_queue_skb(&dev->txq, skb, tx_start); | |
3704 | if (skb_queue_len(&dev->txq) >= dev->tx_qlen) | |
3705 | netif_stop_queue(dev->net); | |
3706 | break; | |
3707 | case -EPIPE: | |
3708 | netif_stop_queue(dev->net); | |
3709 | lan78xx_defer_kevent(dev, EVENT_TX_HALT); | |
3710 | usb_autopm_put_interface_async(dev->intf); | |
3711 | break; | |
3712 | case -ENODEV: | |
3713 | case -ENOENT: | |
3714 | netif_dbg(dev, tx_err, dev->net, | |
3715 | "tx: submit urb err %d (disconnected?)", ret); | |
3716 | netif_device_detach(dev->net); | |
3717 | break; | |
3718 | default: | |
3719 | usb_autopm_put_interface_async(dev->intf); | |
3720 | netif_dbg(dev, tx_err, dev->net, | |
3721 | "tx: submit urb err %d\n", ret); | |
3722 | break; | |
3723 | } | |
3724 | ||
3725 | spin_unlock_irqrestore(&dev->txq.lock, flags); | |
3726 | ||
3727 | if (ret) { | |
3728 | netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", ret); | |
3729 | drop: | |
3730 | dev->net->stats.tx_dropped++; | |
3731 | if (skb) | |
3732 | dev_kfree_skb_any(skb); | |
3733 | usb_free_urb(urb); | |
3734 | } else { | |
3735 | netif_dbg(dev, tx_queued, dev->net, | |
3736 | "> tx, len %d, type 0x%x\n", length, skb->protocol); | |
3737 | } | |
3738 | } | |
3739 | ||
3740 | static void lan78xx_rx_bh(struct lan78xx_net *dev) | |
3741 | { | |
3742 | struct urb *urb; | |
3743 | int i; | |
3744 | ||
3745 | if (skb_queue_len(&dev->rxq) < dev->rx_qlen) { | |
3746 | for (i = 0; i < 10; i++) { | |
3747 | if (skb_queue_len(&dev->rxq) >= dev->rx_qlen) | |
3748 | break; | |
3749 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
3750 | if (urb) | |
3751 | if (rx_submit(dev, urb, GFP_ATOMIC) == -ENOLINK) | |
3752 | return; | |
3753 | } | |
3754 | ||
3755 | if (skb_queue_len(&dev->rxq) < dev->rx_qlen) | |
3756 | tasklet_schedule(&dev->bh); | |
3757 | } | |
3758 | if (skb_queue_len(&dev->txq) < dev->tx_qlen) | |
3759 | netif_wake_queue(dev->net); | |
3760 | } | |
3761 | ||
3762 | static void lan78xx_bh(struct tasklet_struct *t) | |
3763 | { | |
3764 | struct lan78xx_net *dev = from_tasklet(dev, t, bh); | |
3765 | struct sk_buff *skb; | |
3766 | struct skb_data *entry; | |
3767 | ||
3768 | while ((skb = skb_dequeue(&dev->done))) { | |
3769 | entry = (struct skb_data *)(skb->cb); | |
3770 | switch (entry->state) { | |
3771 | case rx_done: | |
3772 | entry->state = rx_cleanup; | |
3773 | rx_process(dev, skb); | |
3774 | continue; | |
3775 | case tx_done: | |
3776 | usb_free_urb(entry->urb); | |
3777 | dev_kfree_skb(skb); | |
3778 | continue; | |
3779 | case rx_cleanup: | |
3780 | usb_free_urb(entry->urb); | |
3781 | dev_kfree_skb(skb); | |
3782 | continue; | |
3783 | default: | |
3784 | netdev_dbg(dev->net, "skb state %d\n", entry->state); | |
3785 | return; | |
3786 | } | |
3787 | } | |
3788 | ||
3789 | if (netif_device_present(dev->net) && netif_running(dev->net)) { | |
3790 | /* reset update timer delta */ | |
3791 | if (timer_pending(&dev->stat_monitor) && (dev->delta != 1)) { | |
3792 | dev->delta = 1; | |
3793 | mod_timer(&dev->stat_monitor, | |
3794 | jiffies + STAT_UPDATE_TIMER); | |
3795 | } | |
3796 | ||
3797 | if (!skb_queue_empty(&dev->txq_pend)) | |
3798 | lan78xx_tx_bh(dev); | |
3799 | ||
3800 | if (!test_bit(EVENT_RX_HALT, &dev->flags)) | |
3801 | lan78xx_rx_bh(dev); | |
3802 | } | |
3803 | } | |
3804 | ||
3805 | static void lan78xx_delayedwork(struct work_struct *work) | |
3806 | { | |
3807 | int status; | |
3808 | struct lan78xx_net *dev; | |
3809 | ||
3810 | dev = container_of(work, struct lan78xx_net, wq.work); | |
3811 | ||
3812 | if (test_bit(EVENT_DEV_DISCONNECT, &dev->flags)) | |
3813 | return; | |
3814 | ||
3815 | if (usb_autopm_get_interface(dev->intf) < 0) | |
3816 | return; | |
3817 | ||
3818 | if (test_bit(EVENT_TX_HALT, &dev->flags)) { | |
3819 | unlink_urbs(dev, &dev->txq); | |
3820 | ||
3821 | status = usb_clear_halt(dev->udev, dev->pipe_out); | |
3822 | if (status < 0 && | |
3823 | status != -EPIPE && | |
3824 | status != -ESHUTDOWN) { | |
3825 | if (netif_msg_tx_err(dev)) | |
3826 | netdev_err(dev->net, | |
3827 | "can't clear tx halt, status %d\n", | |
3828 | status); | |
3829 | } else { | |
3830 | clear_bit(EVENT_TX_HALT, &dev->flags); | |
3831 | if (status != -ESHUTDOWN) | |
3832 | netif_wake_queue(dev->net); | |
3833 | } | |
3834 | } | |
3835 | ||
3836 | if (test_bit(EVENT_RX_HALT, &dev->flags)) { | |
3837 | unlink_urbs(dev, &dev->rxq); | |
3838 | status = usb_clear_halt(dev->udev, dev->pipe_in); | |
3839 | if (status < 0 && | |
3840 | status != -EPIPE && | |
3841 | status != -ESHUTDOWN) { | |
3842 | if (netif_msg_rx_err(dev)) | |
3843 | netdev_err(dev->net, | |
3844 | "can't clear rx halt, status %d\n", | |
3845 | status); | |
3846 | } else { | |
3847 | clear_bit(EVENT_RX_HALT, &dev->flags); | |
3848 | tasklet_schedule(&dev->bh); | |
3849 | } | |
3850 | } | |
3851 | ||
3852 | if (test_bit(EVENT_LINK_RESET, &dev->flags)) { | |
3853 | int ret = 0; | |
3854 | ||
3855 | clear_bit(EVENT_LINK_RESET, &dev->flags); | |
3856 | if (lan78xx_link_reset(dev) < 0) { | |
3857 | netdev_info(dev->net, "link reset failed (%d)\n", | |
3858 | ret); | |
3859 | } | |
3860 | } | |
3861 | ||
3862 | if (test_bit(EVENT_STAT_UPDATE, &dev->flags)) { | |
3863 | lan78xx_update_stats(dev); | |
3864 | ||
3865 | clear_bit(EVENT_STAT_UPDATE, &dev->flags); | |
3866 | ||
3867 | mod_timer(&dev->stat_monitor, | |
3868 | jiffies + (STAT_UPDATE_TIMER * dev->delta)); | |
3869 | ||
3870 | dev->delta = min((dev->delta * 2), 50); | |
3871 | } | |
3872 | ||
3873 | usb_autopm_put_interface(dev->intf); | |
3874 | } | |
3875 | ||
3876 | static void intr_complete(struct urb *urb) | |
3877 | { | |
3878 | struct lan78xx_net *dev = urb->context; | |
3879 | int status = urb->status; | |
3880 | ||
3881 | switch (status) { | |
3882 | /* success */ | |
3883 | case 0: | |
3884 | lan78xx_status(dev, urb); | |
3885 | break; | |
3886 | ||
3887 | /* software-driven interface shutdown */ | |
3888 | case -ENOENT: /* urb killed */ | |
3889 | case -ENODEV: /* hardware gone */ | |
3890 | case -ESHUTDOWN: /* hardware gone */ | |
3891 | netif_dbg(dev, ifdown, dev->net, | |
3892 | "intr shutdown, code %d\n", status); | |
3893 | return; | |
3894 | ||
3895 | /* NOTE: not throttling like RX/TX, since this endpoint | |
3896 | * already polls infrequently | |
3897 | */ | |
3898 | default: | |
3899 | netdev_dbg(dev->net, "intr status %d\n", status); | |
3900 | break; | |
3901 | } | |
3902 | ||
3903 | if (!netif_device_present(dev->net) || | |
3904 | !netif_running(dev->net)) { | |
3905 | netdev_warn(dev->net, "not submitting new status URB"); | |
3906 | return; | |
3907 | } | |
3908 | ||
3909 | memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); | |
3910 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
3911 | ||
3912 | switch (status) { | |
3913 | case 0: | |
3914 | break; | |
3915 | case -ENODEV: | |
3916 | case -ENOENT: | |
3917 | netif_dbg(dev, timer, dev->net, | |
3918 | "intr resubmit %d (disconnect?)", status); | |
3919 | netif_device_detach(dev->net); | |
3920 | break; | |
3921 | default: | |
3922 | netif_err(dev, timer, dev->net, | |
3923 | "intr resubmit --> %d\n", status); | |
3924 | break; | |
3925 | } | |
3926 | } | |
3927 | ||
3928 | static void lan78xx_disconnect(struct usb_interface *intf) | |
3929 | { | |
3930 | struct lan78xx_net *dev; | |
3931 | struct usb_device *udev; | |
3932 | struct net_device *net; | |
3933 | struct phy_device *phydev; | |
3934 | ||
3935 | dev = usb_get_intfdata(intf); | |
3936 | usb_set_intfdata(intf, NULL); | |
3937 | if (!dev) | |
3938 | return; | |
3939 | ||
3940 | set_bit(EVENT_DEV_DISCONNECT, &dev->flags); | |
3941 | ||
3942 | udev = interface_to_usbdev(intf); | |
3943 | net = dev->net; | |
3944 | ||
3945 | unregister_netdev(net); | |
3946 | ||
3947 | cancel_delayed_work_sync(&dev->wq); | |
3948 | ||
3949 | phydev = net->phydev; | |
3950 | ||
3951 | phy_unregister_fixup_for_uid(PHY_KSZ9031RNX, 0xfffffff0); | |
3952 | phy_unregister_fixup_for_uid(PHY_LAN8835, 0xfffffff0); | |
3953 | ||
3954 | phy_disconnect(net->phydev); | |
3955 | ||
3956 | if (phy_is_pseudo_fixed_link(phydev)) | |
3957 | fixed_phy_unregister(phydev); | |
3958 | ||
3959 | usb_scuttle_anchored_urbs(&dev->deferred); | |
3960 | ||
3961 | if (timer_pending(&dev->stat_monitor)) | |
3962 | del_timer_sync(&dev->stat_monitor); | |
3963 | ||
3964 | lan78xx_unbind(dev, intf); | |
3965 | ||
3966 | usb_kill_urb(dev->urb_intr); | |
3967 | usb_free_urb(dev->urb_intr); | |
3968 | ||
3969 | free_netdev(net); | |
3970 | usb_put_dev(udev); | |
3971 | } | |
3972 | ||
3973 | static void lan78xx_tx_timeout(struct net_device *net, unsigned int txqueue) | |
3974 | { | |
3975 | struct lan78xx_net *dev = netdev_priv(net); | |
3976 | ||
3977 | unlink_urbs(dev, &dev->txq); | |
3978 | tasklet_schedule(&dev->bh); | |
3979 | } | |
3980 | ||
3981 | static netdev_features_t lan78xx_features_check(struct sk_buff *skb, | |
3982 | struct net_device *netdev, | |
3983 | netdev_features_t features) | |
3984 | { | |
3985 | if (skb->len + TX_OVERHEAD > MAX_SINGLE_PACKET_SIZE) | |
3986 | features &= ~NETIF_F_GSO_MASK; | |
3987 | ||
3988 | features = vlan_features_check(skb, features); | |
3989 | features = vxlan_features_check(skb, features); | |
3990 | ||
3991 | return features; | |
3992 | } | |
3993 | ||
3994 | static const struct net_device_ops lan78xx_netdev_ops = { | |
3995 | .ndo_open = lan78xx_open, | |
3996 | .ndo_stop = lan78xx_stop, | |
3997 | .ndo_start_xmit = lan78xx_start_xmit, | |
3998 | .ndo_tx_timeout = lan78xx_tx_timeout, | |
3999 | .ndo_change_mtu = lan78xx_change_mtu, | |
4000 | .ndo_set_mac_address = lan78xx_set_mac_addr, | |
4001 | .ndo_validate_addr = eth_validate_addr, | |
4002 | .ndo_eth_ioctl = phy_do_ioctl_running, | |
4003 | .ndo_set_rx_mode = lan78xx_set_multicast, | |
4004 | .ndo_set_features = lan78xx_set_features, | |
4005 | .ndo_vlan_rx_add_vid = lan78xx_vlan_rx_add_vid, | |
4006 | .ndo_vlan_rx_kill_vid = lan78xx_vlan_rx_kill_vid, | |
4007 | .ndo_features_check = lan78xx_features_check, | |
4008 | }; | |
4009 | ||
4010 | static void lan78xx_stat_monitor(struct timer_list *t) | |
4011 | { | |
4012 | struct lan78xx_net *dev = from_timer(dev, t, stat_monitor); | |
4013 | ||
4014 | lan78xx_defer_kevent(dev, EVENT_STAT_UPDATE); | |
4015 | } | |
4016 | ||
4017 | static int lan78xx_probe(struct usb_interface *intf, | |
4018 | const struct usb_device_id *id) | |
4019 | { | |
4020 | struct usb_host_endpoint *ep_blkin, *ep_blkout, *ep_intr; | |
4021 | struct lan78xx_net *dev; | |
4022 | struct net_device *netdev; | |
4023 | struct usb_device *udev; | |
4024 | int ret; | |
4025 | unsigned int maxp; | |
4026 | unsigned int period; | |
4027 | u8 *buf = NULL; | |
4028 | ||
4029 | udev = interface_to_usbdev(intf); | |
4030 | udev = usb_get_dev(udev); | |
4031 | ||
4032 | netdev = alloc_etherdev(sizeof(struct lan78xx_net)); | |
4033 | if (!netdev) { | |
4034 | dev_err(&intf->dev, "Error: OOM\n"); | |
4035 | ret = -ENOMEM; | |
4036 | goto out1; | |
4037 | } | |
4038 | ||
4039 | /* netdev_printk() needs this */ | |
4040 | SET_NETDEV_DEV(netdev, &intf->dev); | |
4041 | ||
4042 | dev = netdev_priv(netdev); | |
4043 | dev->udev = udev; | |
4044 | dev->intf = intf; | |
4045 | dev->net = netdev; | |
4046 | dev->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV | |
4047 | | NETIF_MSG_PROBE | NETIF_MSG_LINK); | |
4048 | ||
4049 | skb_queue_head_init(&dev->rxq); | |
4050 | skb_queue_head_init(&dev->txq); | |
4051 | skb_queue_head_init(&dev->done); | |
4052 | skb_queue_head_init(&dev->txq_pend); | |
4053 | mutex_init(&dev->phy_mutex); | |
4054 | mutex_init(&dev->dev_mutex); | |
4055 | ||
4056 | tasklet_setup(&dev->bh, lan78xx_bh); | |
4057 | INIT_DELAYED_WORK(&dev->wq, lan78xx_delayedwork); | |
4058 | init_usb_anchor(&dev->deferred); | |
4059 | ||
4060 | netdev->netdev_ops = &lan78xx_netdev_ops; | |
4061 | netdev->watchdog_timeo = TX_TIMEOUT_JIFFIES; | |
4062 | netdev->ethtool_ops = &lan78xx_ethtool_ops; | |
4063 | ||
4064 | dev->delta = 1; | |
4065 | timer_setup(&dev->stat_monitor, lan78xx_stat_monitor, 0); | |
4066 | ||
4067 | mutex_init(&dev->stats.access_lock); | |
4068 | ||
4069 | if (intf->cur_altsetting->desc.bNumEndpoints < 3) { | |
4070 | ret = -ENODEV; | |
4071 | goto out2; | |
4072 | } | |
4073 | ||
4074 | dev->pipe_in = usb_rcvbulkpipe(udev, BULK_IN_PIPE); | |
4075 | ep_blkin = usb_pipe_endpoint(udev, dev->pipe_in); | |
4076 | if (!ep_blkin || !usb_endpoint_is_bulk_in(&ep_blkin->desc)) { | |
4077 | ret = -ENODEV; | |
4078 | goto out2; | |
4079 | } | |
4080 | ||
4081 | dev->pipe_out = usb_sndbulkpipe(udev, BULK_OUT_PIPE); | |
4082 | ep_blkout = usb_pipe_endpoint(udev, dev->pipe_out); | |
4083 | if (!ep_blkout || !usb_endpoint_is_bulk_out(&ep_blkout->desc)) { | |
4084 | ret = -ENODEV; | |
4085 | goto out2; | |
4086 | } | |
4087 | ||
4088 | ep_intr = &intf->cur_altsetting->endpoint[2]; | |
4089 | if (!usb_endpoint_is_int_in(&ep_intr->desc)) { | |
4090 | ret = -ENODEV; | |
4091 | goto out2; | |
4092 | } | |
4093 | ||
4094 | dev->pipe_intr = usb_rcvintpipe(dev->udev, | |
4095 | usb_endpoint_num(&ep_intr->desc)); | |
4096 | ||
4097 | ret = lan78xx_bind(dev, intf); | |
4098 | if (ret < 0) | |
4099 | goto out2; | |
4100 | ||
4101 | if (netdev->mtu > (dev->hard_mtu - netdev->hard_header_len)) | |
4102 | netdev->mtu = dev->hard_mtu - netdev->hard_header_len; | |
4103 | ||
4104 | /* MTU range: 68 - 9000 */ | |
4105 | netdev->max_mtu = MAX_SINGLE_PACKET_SIZE; | |
4106 | netif_set_gso_max_size(netdev, MAX_SINGLE_PACKET_SIZE - MAX_HEADER); | |
4107 | ||
4108 | period = ep_intr->desc.bInterval; | |
4109 | maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0); | |
4110 | buf = kmalloc(maxp, GFP_KERNEL); | |
4111 | if (buf) { | |
4112 | dev->urb_intr = usb_alloc_urb(0, GFP_KERNEL); | |
4113 | if (!dev->urb_intr) { | |
4114 | ret = -ENOMEM; | |
4115 | kfree(buf); | |
4116 | goto out3; | |
4117 | } else { | |
4118 | usb_fill_int_urb(dev->urb_intr, dev->udev, | |
4119 | dev->pipe_intr, buf, maxp, | |
4120 | intr_complete, dev, period); | |
4121 | dev->urb_intr->transfer_flags |= URB_FREE_BUFFER; | |
4122 | } | |
4123 | } | |
4124 | ||
4125 | dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1); | |
4126 | ||
4127 | /* Reject broken descriptors. */ | |
4128 | if (dev->maxpacket == 0) { | |
4129 | ret = -ENODEV; | |
4130 | goto out4; | |
4131 | } | |
4132 | ||
4133 | /* driver requires remote-wakeup capability during autosuspend. */ | |
4134 | intf->needs_remote_wakeup = 1; | |
4135 | ||
4136 | ret = lan78xx_phy_init(dev); | |
4137 | if (ret < 0) | |
4138 | goto out4; | |
4139 | ||
4140 | ret = register_netdev(netdev); | |
4141 | if (ret != 0) { | |
4142 | netif_err(dev, probe, netdev, "couldn't register the device\n"); | |
4143 | goto out5; | |
4144 | } | |
4145 | ||
4146 | usb_set_intfdata(intf, dev); | |
4147 | ||
4148 | ret = device_set_wakeup_enable(&udev->dev, true); | |
4149 | ||
4150 | /* Default delay of 2sec has more overhead than advantage. | |
4151 | * Set to 10sec as default. | |
4152 | */ | |
4153 | pm_runtime_set_autosuspend_delay(&udev->dev, | |
4154 | DEFAULT_AUTOSUSPEND_DELAY); | |
4155 | ||
4156 | return 0; | |
4157 | ||
4158 | out5: | |
4159 | phy_disconnect(netdev->phydev); | |
4160 | out4: | |
4161 | usb_free_urb(dev->urb_intr); | |
4162 | out3: | |
4163 | lan78xx_unbind(dev, intf); | |
4164 | out2: | |
4165 | free_netdev(netdev); | |
4166 | out1: | |
4167 | usb_put_dev(udev); | |
4168 | ||
4169 | return ret; | |
4170 | } | |
4171 | ||
4172 | static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len) | |
4173 | { | |
4174 | const u16 crc16poly = 0x8005; | |
4175 | int i; | |
4176 | u16 bit, crc, msb; | |
4177 | u8 data; | |
4178 | ||
4179 | crc = 0xFFFF; | |
4180 | for (i = 0; i < len; i++) { | |
4181 | data = *buf++; | |
4182 | for (bit = 0; bit < 8; bit++) { | |
4183 | msb = crc >> 15; | |
4184 | crc <<= 1; | |
4185 | ||
4186 | if (msb ^ (u16)(data & 1)) { | |
4187 | crc ^= crc16poly; | |
4188 | crc |= (u16)0x0001U; | |
4189 | } | |
4190 | data >>= 1; | |
4191 | } | |
4192 | } | |
4193 | ||
4194 | return crc; | |
4195 | } | |
4196 | ||
4197 | static int lan78xx_set_auto_suspend(struct lan78xx_net *dev) | |
4198 | { | |
4199 | u32 buf; | |
4200 | int ret; | |
4201 | ||
4202 | ret = lan78xx_stop_tx_path(dev); | |
4203 | if (ret < 0) | |
4204 | return ret; | |
4205 | ||
4206 | ret = lan78xx_stop_rx_path(dev); | |
4207 | if (ret < 0) | |
4208 | return ret; | |
4209 | ||
4210 | /* auto suspend (selective suspend) */ | |
4211 | ||
4212 | ret = lan78xx_write_reg(dev, WUCSR, 0); | |
4213 | if (ret < 0) | |
4214 | return ret; | |
4215 | ret = lan78xx_write_reg(dev, WUCSR2, 0); | |
4216 | if (ret < 0) | |
4217 | return ret; | |
4218 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); | |
4219 | if (ret < 0) | |
4220 | return ret; | |
4221 | ||
4222 | /* set goodframe wakeup */ | |
4223 | ||
4224 | ret = lan78xx_read_reg(dev, WUCSR, &buf); | |
4225 | if (ret < 0) | |
4226 | return ret; | |
4227 | ||
4228 | buf |= WUCSR_RFE_WAKE_EN_; | |
4229 | buf |= WUCSR_STORE_WAKE_; | |
4230 | ||
4231 | ret = lan78xx_write_reg(dev, WUCSR, buf); | |
4232 | if (ret < 0) | |
4233 | return ret; | |
4234 | ||
4235 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
4236 | if (ret < 0) | |
4237 | return ret; | |
4238 | ||
4239 | buf &= ~PMT_CTL_RES_CLR_WKP_EN_; | |
4240 | buf |= PMT_CTL_RES_CLR_WKP_STS_; | |
4241 | buf |= PMT_CTL_PHY_WAKE_EN_; | |
4242 | buf |= PMT_CTL_WOL_EN_; | |
4243 | buf &= ~PMT_CTL_SUS_MODE_MASK_; | |
4244 | buf |= PMT_CTL_SUS_MODE_3_; | |
4245 | ||
4246 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
4247 | if (ret < 0) | |
4248 | return ret; | |
4249 | ||
4250 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
4251 | if (ret < 0) | |
4252 | return ret; | |
4253 | ||
4254 | buf |= PMT_CTL_WUPS_MASK_; | |
4255 | ||
4256 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
4257 | if (ret < 0) | |
4258 | return ret; | |
4259 | ||
4260 | ret = lan78xx_start_rx_path(dev); | |
4261 | ||
4262 | return ret; | |
4263 | } | |
4264 | ||
4265 | static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol) | |
4266 | { | |
4267 | const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; | |
4268 | const u8 ipv6_multicast[3] = { 0x33, 0x33 }; | |
4269 | const u8 arp_type[2] = { 0x08, 0x06 }; | |
4270 | u32 temp_pmt_ctl; | |
4271 | int mask_index; | |
4272 | u32 temp_wucsr; | |
4273 | u32 buf; | |
4274 | u16 crc; | |
4275 | int ret; | |
4276 | ||
4277 | ret = lan78xx_stop_tx_path(dev); | |
4278 | if (ret < 0) | |
4279 | return ret; | |
4280 | ret = lan78xx_stop_rx_path(dev); | |
4281 | if (ret < 0) | |
4282 | return ret; | |
4283 | ||
4284 | ret = lan78xx_write_reg(dev, WUCSR, 0); | |
4285 | if (ret < 0) | |
4286 | return ret; | |
4287 | ret = lan78xx_write_reg(dev, WUCSR2, 0); | |
4288 | if (ret < 0) | |
4289 | return ret; | |
4290 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); | |
4291 | if (ret < 0) | |
4292 | return ret; | |
4293 | ||
4294 | temp_wucsr = 0; | |
4295 | ||
4296 | temp_pmt_ctl = 0; | |
4297 | ||
4298 | ret = lan78xx_read_reg(dev, PMT_CTL, &temp_pmt_ctl); | |
4299 | if (ret < 0) | |
4300 | return ret; | |
4301 | ||
4302 | temp_pmt_ctl &= ~PMT_CTL_RES_CLR_WKP_EN_; | |
4303 | temp_pmt_ctl |= PMT_CTL_RES_CLR_WKP_STS_; | |
4304 | ||
4305 | for (mask_index = 0; mask_index < NUM_OF_WUF_CFG; mask_index++) { | |
4306 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), 0); | |
4307 | if (ret < 0) | |
4308 | return ret; | |
4309 | } | |
4310 | ||
4311 | mask_index = 0; | |
4312 | if (wol & WAKE_PHY) { | |
4313 | temp_pmt_ctl |= PMT_CTL_PHY_WAKE_EN_; | |
4314 | ||
4315 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
4316 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
4317 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
4318 | } | |
4319 | if (wol & WAKE_MAGIC) { | |
4320 | temp_wucsr |= WUCSR_MPEN_; | |
4321 | ||
4322 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
4323 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
4324 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_3_; | |
4325 | } | |
4326 | if (wol & WAKE_BCAST) { | |
4327 | temp_wucsr |= WUCSR_BCST_EN_; | |
4328 | ||
4329 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
4330 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
4331 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
4332 | } | |
4333 | if (wol & WAKE_MCAST) { | |
4334 | temp_wucsr |= WUCSR_WAKE_EN_; | |
4335 | ||
4336 | /* set WUF_CFG & WUF_MASK for IPv4 Multicast */ | |
4337 | crc = lan78xx_wakeframe_crc16(ipv4_multicast, 3); | |
4338 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), | |
4339 | WUF_CFGX_EN_ | | |
4340 | WUF_CFGX_TYPE_MCAST_ | | |
4341 | (0 << WUF_CFGX_OFFSET_SHIFT_) | | |
4342 | (crc & WUF_CFGX_CRC16_MASK_)); | |
4343 | if (ret < 0) | |
4344 | return ret; | |
4345 | ||
4346 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 7); | |
4347 | if (ret < 0) | |
4348 | return ret; | |
4349 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); | |
4350 | if (ret < 0) | |
4351 | return ret; | |
4352 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); | |
4353 | if (ret < 0) | |
4354 | return ret; | |
4355 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); | |
4356 | if (ret < 0) | |
4357 | return ret; | |
4358 | ||
4359 | mask_index++; | |
4360 | ||
4361 | /* for IPv6 Multicast */ | |
4362 | crc = lan78xx_wakeframe_crc16(ipv6_multicast, 2); | |
4363 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), | |
4364 | WUF_CFGX_EN_ | | |
4365 | WUF_CFGX_TYPE_MCAST_ | | |
4366 | (0 << WUF_CFGX_OFFSET_SHIFT_) | | |
4367 | (crc & WUF_CFGX_CRC16_MASK_)); | |
4368 | if (ret < 0) | |
4369 | return ret; | |
4370 | ||
4371 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 3); | |
4372 | if (ret < 0) | |
4373 | return ret; | |
4374 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); | |
4375 | if (ret < 0) | |
4376 | return ret; | |
4377 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); | |
4378 | if (ret < 0) | |
4379 | return ret; | |
4380 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); | |
4381 | if (ret < 0) | |
4382 | return ret; | |
4383 | ||
4384 | mask_index++; | |
4385 | ||
4386 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
4387 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
4388 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
4389 | } | |
4390 | if (wol & WAKE_UCAST) { | |
4391 | temp_wucsr |= WUCSR_PFDA_EN_; | |
4392 | ||
4393 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
4394 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
4395 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
4396 | } | |
4397 | if (wol & WAKE_ARP) { | |
4398 | temp_wucsr |= WUCSR_WAKE_EN_; | |
4399 | ||
4400 | /* set WUF_CFG & WUF_MASK | |
4401 | * for packettype (offset 12,13) = ARP (0x0806) | |
4402 | */ | |
4403 | crc = lan78xx_wakeframe_crc16(arp_type, 2); | |
4404 | ret = lan78xx_write_reg(dev, WUF_CFG(mask_index), | |
4405 | WUF_CFGX_EN_ | | |
4406 | WUF_CFGX_TYPE_ALL_ | | |
4407 | (0 << WUF_CFGX_OFFSET_SHIFT_) | | |
4408 | (crc & WUF_CFGX_CRC16_MASK_)); | |
4409 | if (ret < 0) | |
4410 | return ret; | |
4411 | ||
4412 | ret = lan78xx_write_reg(dev, WUF_MASK0(mask_index), 0x3000); | |
4413 | if (ret < 0) | |
4414 | return ret; | |
4415 | ret = lan78xx_write_reg(dev, WUF_MASK1(mask_index), 0); | |
4416 | if (ret < 0) | |
4417 | return ret; | |
4418 | ret = lan78xx_write_reg(dev, WUF_MASK2(mask_index), 0); | |
4419 | if (ret < 0) | |
4420 | return ret; | |
4421 | ret = lan78xx_write_reg(dev, WUF_MASK3(mask_index), 0); | |
4422 | if (ret < 0) | |
4423 | return ret; | |
4424 | ||
4425 | mask_index++; | |
4426 | ||
4427 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
4428 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
4429 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
4430 | } | |
4431 | ||
4432 | ret = lan78xx_write_reg(dev, WUCSR, temp_wucsr); | |
4433 | if (ret < 0) | |
4434 | return ret; | |
4435 | ||
4436 | /* when multiple WOL bits are set */ | |
4437 | if (hweight_long((unsigned long)wol) > 1) { | |
4438 | temp_pmt_ctl |= PMT_CTL_WOL_EN_; | |
4439 | temp_pmt_ctl &= ~PMT_CTL_SUS_MODE_MASK_; | |
4440 | temp_pmt_ctl |= PMT_CTL_SUS_MODE_0_; | |
4441 | } | |
4442 | ret = lan78xx_write_reg(dev, PMT_CTL, temp_pmt_ctl); | |
4443 | if (ret < 0) | |
4444 | return ret; | |
4445 | ||
4446 | /* clear WUPS */ | |
4447 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
4448 | if (ret < 0) | |
4449 | return ret; | |
4450 | ||
4451 | buf |= PMT_CTL_WUPS_MASK_; | |
4452 | ||
4453 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
4454 | if (ret < 0) | |
4455 | return ret; | |
4456 | ||
4457 | ret = lan78xx_start_rx_path(dev); | |
4458 | ||
4459 | return ret; | |
4460 | } | |
4461 | ||
4462 | static int lan78xx_suspend(struct usb_interface *intf, pm_message_t message) | |
4463 | { | |
4464 | struct lan78xx_net *dev = usb_get_intfdata(intf); | |
4465 | bool dev_open; | |
4466 | int ret; | |
4467 | ||
4468 | mutex_lock(&dev->dev_mutex); | |
4469 | ||
4470 | netif_dbg(dev, ifdown, dev->net, | |
4471 | "suspending: pm event %#x", message.event); | |
4472 | ||
4473 | dev_open = test_bit(EVENT_DEV_OPEN, &dev->flags); | |
4474 | ||
4475 | if (dev_open) { | |
4476 | spin_lock_irq(&dev->txq.lock); | |
4477 | /* don't autosuspend while transmitting */ | |
4478 | if ((skb_queue_len(&dev->txq) || | |
4479 | skb_queue_len(&dev->txq_pend)) && | |
4480 | PMSG_IS_AUTO(message)) { | |
4481 | spin_unlock_irq(&dev->txq.lock); | |
4482 | ret = -EBUSY; | |
4483 | goto out; | |
4484 | } else { | |
4485 | set_bit(EVENT_DEV_ASLEEP, &dev->flags); | |
4486 | spin_unlock_irq(&dev->txq.lock); | |
4487 | } | |
4488 | ||
4489 | /* stop RX */ | |
4490 | ret = lan78xx_stop_rx_path(dev); | |
4491 | if (ret < 0) | |
4492 | goto out; | |
4493 | ||
4494 | ret = lan78xx_flush_rx_fifo(dev); | |
4495 | if (ret < 0) | |
4496 | goto out; | |
4497 | ||
4498 | /* stop Tx */ | |
4499 | ret = lan78xx_stop_tx_path(dev); | |
4500 | if (ret < 0) | |
4501 | goto out; | |
4502 | ||
4503 | /* empty out the Rx and Tx queues */ | |
4504 | netif_device_detach(dev->net); | |
4505 | lan78xx_terminate_urbs(dev); | |
4506 | usb_kill_urb(dev->urb_intr); | |
4507 | ||
4508 | /* reattach */ | |
4509 | netif_device_attach(dev->net); | |
4510 | ||
4511 | del_timer(&dev->stat_monitor); | |
4512 | ||
4513 | if (PMSG_IS_AUTO(message)) { | |
4514 | ret = lan78xx_set_auto_suspend(dev); | |
4515 | if (ret < 0) | |
4516 | goto out; | |
4517 | } else { | |
4518 | struct lan78xx_priv *pdata; | |
4519 | ||
4520 | pdata = (struct lan78xx_priv *)(dev->data[0]); | |
4521 | netif_carrier_off(dev->net); | |
4522 | ret = lan78xx_set_suspend(dev, pdata->wol); | |
4523 | if (ret < 0) | |
4524 | goto out; | |
4525 | } | |
4526 | } else { | |
4527 | /* Interface is down; don't allow WOL and PHY | |
4528 | * events to wake up the host | |
4529 | */ | |
4530 | u32 buf; | |
4531 | ||
4532 | set_bit(EVENT_DEV_ASLEEP, &dev->flags); | |
4533 | ||
4534 | ret = lan78xx_write_reg(dev, WUCSR, 0); | |
4535 | if (ret < 0) | |
4536 | goto out; | |
4537 | ret = lan78xx_write_reg(dev, WUCSR2, 0); | |
4538 | if (ret < 0) | |
4539 | goto out; | |
4540 | ||
4541 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
4542 | if (ret < 0) | |
4543 | goto out; | |
4544 | ||
4545 | buf &= ~PMT_CTL_RES_CLR_WKP_EN_; | |
4546 | buf |= PMT_CTL_RES_CLR_WKP_STS_; | |
4547 | buf &= ~PMT_CTL_SUS_MODE_MASK_; | |
4548 | buf |= PMT_CTL_SUS_MODE_3_; | |
4549 | ||
4550 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
4551 | if (ret < 0) | |
4552 | goto out; | |
4553 | ||
4554 | ret = lan78xx_read_reg(dev, PMT_CTL, &buf); | |
4555 | if (ret < 0) | |
4556 | goto out; | |
4557 | ||
4558 | buf |= PMT_CTL_WUPS_MASK_; | |
4559 | ||
4560 | ret = lan78xx_write_reg(dev, PMT_CTL, buf); | |
4561 | if (ret < 0) | |
4562 | goto out; | |
4563 | } | |
4564 | ||
4565 | ret = 0; | |
4566 | out: | |
4567 | mutex_unlock(&dev->dev_mutex); | |
4568 | ||
4569 | return ret; | |
4570 | } | |
4571 | ||
4572 | static bool lan78xx_submit_deferred_urbs(struct lan78xx_net *dev) | |
4573 | { | |
4574 | bool pipe_halted = false; | |
4575 | struct urb *urb; | |
4576 | ||
4577 | while ((urb = usb_get_from_anchor(&dev->deferred))) { | |
4578 | struct sk_buff *skb = urb->context; | |
4579 | int ret; | |
4580 | ||
4581 | if (!netif_device_present(dev->net) || | |
4582 | !netif_carrier_ok(dev->net) || | |
4583 | pipe_halted) { | |
4584 | usb_free_urb(urb); | |
4585 | dev_kfree_skb(skb); | |
4586 | continue; | |
4587 | } | |
4588 | ||
4589 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
4590 | ||
4591 | if (ret == 0) { | |
4592 | netif_trans_update(dev->net); | |
4593 | lan78xx_queue_skb(&dev->txq, skb, tx_start); | |
4594 | } else { | |
4595 | usb_free_urb(urb); | |
4596 | dev_kfree_skb(skb); | |
4597 | ||
4598 | if (ret == -EPIPE) { | |
4599 | netif_stop_queue(dev->net); | |
4600 | pipe_halted = true; | |
4601 | } else if (ret == -ENODEV) { | |
4602 | netif_device_detach(dev->net); | |
4603 | } | |
4604 | } | |
4605 | } | |
4606 | ||
4607 | return pipe_halted; | |
4608 | } | |
4609 | ||
4610 | static int lan78xx_resume(struct usb_interface *intf) | |
4611 | { | |
4612 | struct lan78xx_net *dev = usb_get_intfdata(intf); | |
4613 | bool dev_open; | |
4614 | int ret; | |
4615 | ||
4616 | mutex_lock(&dev->dev_mutex); | |
4617 | ||
4618 | netif_dbg(dev, ifup, dev->net, "resuming device"); | |
4619 | ||
4620 | dev_open = test_bit(EVENT_DEV_OPEN, &dev->flags); | |
4621 | ||
4622 | if (dev_open) { | |
4623 | bool pipe_halted = false; | |
4624 | ||
4625 | ret = lan78xx_flush_tx_fifo(dev); | |
4626 | if (ret < 0) | |
4627 | goto out; | |
4628 | ||
4629 | if (dev->urb_intr) { | |
4630 | int ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL); | |
4631 | ||
4632 | if (ret < 0) { | |
4633 | if (ret == -ENODEV) | |
4634 | netif_device_detach(dev->net); | |
4635 | ||
4636 | netdev_warn(dev->net, "Failed to submit intr URB"); | |
4637 | } | |
4638 | } | |
4639 | ||
4640 | spin_lock_irq(&dev->txq.lock); | |
4641 | ||
4642 | if (netif_device_present(dev->net)) { | |
4643 | pipe_halted = lan78xx_submit_deferred_urbs(dev); | |
4644 | ||
4645 | if (pipe_halted) | |
4646 | lan78xx_defer_kevent(dev, EVENT_TX_HALT); | |
4647 | } | |
4648 | ||
4649 | clear_bit(EVENT_DEV_ASLEEP, &dev->flags); | |
4650 | ||
4651 | spin_unlock_irq(&dev->txq.lock); | |
4652 | ||
4653 | if (!pipe_halted && | |
4654 | netif_device_present(dev->net) && | |
4655 | (skb_queue_len(&dev->txq) < dev->tx_qlen)) | |
4656 | netif_start_queue(dev->net); | |
4657 | ||
4658 | ret = lan78xx_start_tx_path(dev); | |
4659 | if (ret < 0) | |
4660 | goto out; | |
4661 | ||
4662 | tasklet_schedule(&dev->bh); | |
4663 | ||
4664 | if (!timer_pending(&dev->stat_monitor)) { | |
4665 | dev->delta = 1; | |
4666 | mod_timer(&dev->stat_monitor, | |
4667 | jiffies + STAT_UPDATE_TIMER); | |
4668 | } | |
4669 | ||
4670 | } else { | |
4671 | clear_bit(EVENT_DEV_ASLEEP, &dev->flags); | |
4672 | } | |
4673 | ||
4674 | ret = lan78xx_write_reg(dev, WUCSR2, 0); | |
4675 | if (ret < 0) | |
4676 | goto out; | |
4677 | ret = lan78xx_write_reg(dev, WUCSR, 0); | |
4678 | if (ret < 0) | |
4679 | goto out; | |
4680 | ret = lan78xx_write_reg(dev, WK_SRC, 0xFFF1FF1FUL); | |
4681 | if (ret < 0) | |
4682 | goto out; | |
4683 | ||
4684 | ret = lan78xx_write_reg(dev, WUCSR2, WUCSR2_NS_RCD_ | | |
4685 | WUCSR2_ARP_RCD_ | | |
4686 | WUCSR2_IPV6_TCPSYN_RCD_ | | |
4687 | WUCSR2_IPV4_TCPSYN_RCD_); | |
4688 | if (ret < 0) | |
4689 | goto out; | |
4690 | ||
4691 | ret = lan78xx_write_reg(dev, WUCSR, WUCSR_EEE_TX_WAKE_ | | |
4692 | WUCSR_EEE_RX_WAKE_ | | |
4693 | WUCSR_PFDA_FR_ | | |
4694 | WUCSR_RFE_WAKE_FR_ | | |
4695 | WUCSR_WUFR_ | | |
4696 | WUCSR_MPR_ | | |
4697 | WUCSR_BCST_FR_); | |
4698 | if (ret < 0) | |
4699 | goto out; | |
4700 | ||
4701 | ret = 0; | |
4702 | out: | |
4703 | mutex_unlock(&dev->dev_mutex); | |
4704 | ||
4705 | return ret; | |
4706 | } | |
4707 | ||
4708 | static int lan78xx_reset_resume(struct usb_interface *intf) | |
4709 | { | |
4710 | struct lan78xx_net *dev = usb_get_intfdata(intf); | |
4711 | int ret; | |
4712 | ||
4713 | netif_dbg(dev, ifup, dev->net, "(reset) resuming device"); | |
4714 | ||
4715 | ret = lan78xx_reset(dev); | |
4716 | if (ret < 0) | |
4717 | return ret; | |
4718 | ||
4719 | phy_start(dev->net->phydev); | |
4720 | ||
4721 | ret = lan78xx_resume(intf); | |
4722 | ||
4723 | return ret; | |
4724 | } | |
4725 | ||
4726 | static const struct usb_device_id products[] = { | |
4727 | { | |
4728 | /* LAN7800 USB Gigabit Ethernet Device */ | |
4729 | USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7800_USB_PRODUCT_ID), | |
4730 | }, | |
4731 | { | |
4732 | /* LAN7850 USB Gigabit Ethernet Device */ | |
4733 | USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7850_USB_PRODUCT_ID), | |
4734 | }, | |
4735 | { | |
4736 | /* LAN7801 USB Gigabit Ethernet Device */ | |
4737 | USB_DEVICE(LAN78XX_USB_VENDOR_ID, LAN7801_USB_PRODUCT_ID), | |
4738 | }, | |
4739 | { | |
4740 | /* ATM2-AF USB Gigabit Ethernet Device */ | |
4741 | USB_DEVICE(AT29M2AF_USB_VENDOR_ID, AT29M2AF_USB_PRODUCT_ID), | |
4742 | }, | |
4743 | {}, | |
4744 | }; | |
4745 | MODULE_DEVICE_TABLE(usb, products); | |
4746 | ||
4747 | static struct usb_driver lan78xx_driver = { | |
4748 | .name = DRIVER_NAME, | |
4749 | .id_table = products, | |
4750 | .probe = lan78xx_probe, | |
4751 | .disconnect = lan78xx_disconnect, | |
4752 | .suspend = lan78xx_suspend, | |
4753 | .resume = lan78xx_resume, | |
4754 | .reset_resume = lan78xx_reset_resume, | |
4755 | .supports_autosuspend = 1, | |
4756 | .disable_hub_initiated_lpm = 1, | |
4757 | }; | |
4758 | ||
4759 | module_usb_driver(lan78xx_driver); | |
4760 | ||
4761 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
4762 | MODULE_DESCRIPTION(DRIVER_DESC); | |
4763 | MODULE_LICENSE("GPL"); |