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8#include <linux/module.h>
9#include <linux/kmod.h>
10#include <linux/netdevice.h>
11#include <linux/etherdevice.h>
12#include <linux/ethtool.h>
13#include <linux/mii.h>
14#include <linux/usb.h>
15#include <linux/bitrev.h>
16#include <linux/crc16.h>
17#include <linux/crc32.h>
18#include <linux/usb/usbnet.h>
19#include <linux/slab.h>
20#include <linux/of_net.h>
21#include "smsc75xx.h"
22
23#define SMSC_CHIPNAME "smsc75xx"
24#define SMSC_DRIVER_VERSION "1.0.0"
25#define HS_USB_PKT_SIZE (512)
26#define FS_USB_PKT_SIZE (64)
27#define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
28#define DEFAULT_FS_BURST_CAP_SIZE (6 * 1024 + 33 * FS_USB_PKT_SIZE)
29#define DEFAULT_BULK_IN_DELAY (0x00002000)
30#define MAX_SINGLE_PACKET_SIZE (9000)
31#define LAN75XX_EEPROM_MAGIC (0x7500)
32#define EEPROM_MAC_OFFSET (0x01)
33#define DEFAULT_TX_CSUM_ENABLE (true)
34#define DEFAULT_RX_CSUM_ENABLE (true)
35#define SMSC75XX_INTERNAL_PHY_ID (1)
36#define SMSC75XX_TX_OVERHEAD (8)
37#define MAX_RX_FIFO_SIZE (20 * 1024)
38#define MAX_TX_FIFO_SIZE (12 * 1024)
39#define USB_VENDOR_ID_SMSC (0x0424)
40#define USB_PRODUCT_ID_LAN7500 (0x7500)
41#define USB_PRODUCT_ID_LAN7505 (0x7505)
42#define RXW_PADDING 2
43#define SUPPORTED_WAKE (WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
44 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
45
46#define SUSPEND_SUSPEND0 (0x01)
47#define SUSPEND_SUSPEND1 (0x02)
48#define SUSPEND_SUSPEND2 (0x04)
49#define SUSPEND_SUSPEND3 (0x08)
50#define SUSPEND_ALLMODES (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
51 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
52
53struct smsc75xx_priv {
54 struct usbnet *dev;
55 u32 rfe_ctl;
56 u32 wolopts;
57 u32 multicast_hash_table[DP_SEL_VHF_HASH_LEN];
58 struct mutex dataport_mutex;
59 spinlock_t rfe_ctl_lock;
60 struct work_struct set_multicast;
61 u8 suspend_flags;
62};
63
64struct usb_context {
65 struct usb_ctrlrequest req;
66 struct usbnet *dev;
67};
68
69static bool turbo_mode = true;
70module_param(turbo_mode, bool, 0644);
71MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
72
73static int smsc75xx_link_ok_nopm(struct usbnet *dev);
74static int smsc75xx_phy_gig_workaround(struct usbnet *dev);
75
76static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index,
77 u32 *data, int in_pm)
78{
79 u32 buf;
80 int ret;
81 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
82
83 BUG_ON(!dev);
84
85 if (!in_pm)
86 fn = usbnet_read_cmd;
87 else
88 fn = usbnet_read_cmd_nopm;
89
90 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
91 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
92 0, index, &buf, 4);
93 if (unlikely(ret < 0)) {
94 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
95 index, ret);
96 return ret;
97 }
98
99 le32_to_cpus(&buf);
100 *data = buf;
101
102 return ret;
103}
104
105static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index,
106 u32 data, int in_pm)
107{
108 u32 buf;
109 int ret;
110 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
111
112 BUG_ON(!dev);
113
114 if (!in_pm)
115 fn = usbnet_write_cmd;
116 else
117 fn = usbnet_write_cmd_nopm;
118
119 buf = data;
120 cpu_to_le32s(&buf);
121
122 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
123 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
124 0, index, &buf, 4);
125 if (unlikely(ret < 0))
126 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
127 index, ret);
128
129 return ret;
130}
131
132static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index,
133 u32 *data)
134{
135 return __smsc75xx_read_reg(dev, index, data, 1);
136}
137
138static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index,
139 u32 data)
140{
141 return __smsc75xx_write_reg(dev, index, data, 1);
142}
143
144static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index,
145 u32 *data)
146{
147 return __smsc75xx_read_reg(dev, index, data, 0);
148}
149
150static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index,
151 u32 data)
152{
153 return __smsc75xx_write_reg(dev, index, data, 0);
154}
155
156
157
158static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev,
159 int in_pm)
160{
161 unsigned long start_time = jiffies;
162 u32 val;
163 int ret;
164
165 do {
166 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm);
167 if (ret < 0) {
168 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
169 return ret;
170 }
171
172 if (!(val & MII_ACCESS_BUSY))
173 return 0;
174 } while (!time_after(jiffies, start_time + HZ));
175
176 return -EIO;
177}
178
179static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
180 int in_pm)
181{
182 struct usbnet *dev = netdev_priv(netdev);
183 u32 val, addr;
184 int ret;
185
186 mutex_lock(&dev->phy_mutex);
187
188
189 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
190 if (ret < 0) {
191 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n");
192 goto done;
193 }
194
195
196 phy_id &= dev->mii.phy_id_mask;
197 idx &= dev->mii.reg_num_mask;
198 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
199 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
200 | MII_ACCESS_READ | MII_ACCESS_BUSY;
201 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
202 if (ret < 0) {
203 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
204 goto done;
205 }
206
207 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
208 if (ret < 0) {
209 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
210 goto done;
211 }
212
213 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm);
214 if (ret < 0) {
215 netdev_warn(dev->net, "Error reading MII_DATA\n");
216 goto done;
217 }
218
219 ret = (u16)(val & 0xFFFF);
220
221done:
222 mutex_unlock(&dev->phy_mutex);
223 return ret;
224}
225
226static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id,
227 int idx, int regval, int in_pm)
228{
229 struct usbnet *dev = netdev_priv(netdev);
230 u32 val, addr;
231 int ret;
232
233 mutex_lock(&dev->phy_mutex);
234
235
236 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
237 if (ret < 0) {
238 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n");
239 goto done;
240 }
241
242 val = regval;
243 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm);
244 if (ret < 0) {
245 netdev_warn(dev->net, "Error writing MII_DATA\n");
246 goto done;
247 }
248
249
250 phy_id &= dev->mii.phy_id_mask;
251 idx &= dev->mii.reg_num_mask;
252 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
253 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
254 | MII_ACCESS_WRITE | MII_ACCESS_BUSY;
255 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
256 if (ret < 0) {
257 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
258 goto done;
259 }
260
261 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
262 if (ret < 0) {
263 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
264 goto done;
265 }
266
267done:
268 mutex_unlock(&dev->phy_mutex);
269}
270
271static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
272 int idx)
273{
274 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1);
275}
276
277static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
278 int idx, int regval)
279{
280 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1);
281}
282
283static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
284{
285 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0);
286}
287
288static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
289 int regval)
290{
291 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0);
292}
293
294static int smsc75xx_wait_eeprom(struct usbnet *dev)
295{
296 unsigned long start_time = jiffies;
297 u32 val;
298 int ret;
299
300 do {
301 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
302 if (ret < 0) {
303 netdev_warn(dev->net, "Error reading E2P_CMD\n");
304 return ret;
305 }
306
307 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT))
308 break;
309 udelay(40);
310 } while (!time_after(jiffies, start_time + HZ));
311
312 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) {
313 netdev_warn(dev->net, "EEPROM read operation timeout\n");
314 return -EIO;
315 }
316
317 return 0;
318}
319
320static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev)
321{
322 unsigned long start_time = jiffies;
323 u32 val;
324 int ret;
325
326 do {
327 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
328 if (ret < 0) {
329 netdev_warn(dev->net, "Error reading E2P_CMD\n");
330 return ret;
331 }
332
333 if (!(val & E2P_CMD_BUSY))
334 return 0;
335
336 udelay(40);
337 } while (!time_after(jiffies, start_time + HZ));
338
339 netdev_warn(dev->net, "EEPROM is busy\n");
340 return -EIO;
341}
342
343static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
344 u8 *data)
345{
346 u32 val;
347 int i, ret;
348
349 BUG_ON(!dev);
350 BUG_ON(!data);
351
352 ret = smsc75xx_eeprom_confirm_not_busy(dev);
353 if (ret)
354 return ret;
355
356 for (i = 0; i < length; i++) {
357 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR);
358 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
359 if (ret < 0) {
360 netdev_warn(dev->net, "Error writing E2P_CMD\n");
361 return ret;
362 }
363
364 ret = smsc75xx_wait_eeprom(dev);
365 if (ret < 0)
366 return ret;
367
368 ret = smsc75xx_read_reg(dev, E2P_DATA, &val);
369 if (ret < 0) {
370 netdev_warn(dev->net, "Error reading E2P_DATA\n");
371 return ret;
372 }
373
374 data[i] = val & 0xFF;
375 offset++;
376 }
377
378 return 0;
379}
380
381static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
382 u8 *data)
383{
384 u32 val;
385 int i, ret;
386
387 BUG_ON(!dev);
388 BUG_ON(!data);
389
390 ret = smsc75xx_eeprom_confirm_not_busy(dev);
391 if (ret)
392 return ret;
393
394
395 val = E2P_CMD_BUSY | E2P_CMD_EWEN;
396 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
397 if (ret < 0) {
398 netdev_warn(dev->net, "Error writing E2P_CMD\n");
399 return ret;
400 }
401
402 ret = smsc75xx_wait_eeprom(dev);
403 if (ret < 0)
404 return ret;
405
406 for (i = 0; i < length; i++) {
407
408
409 val = data[i];
410 ret = smsc75xx_write_reg(dev, E2P_DATA, val);
411 if (ret < 0) {
412 netdev_warn(dev->net, "Error writing E2P_DATA\n");
413 return ret;
414 }
415
416
417 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR);
418 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
419 if (ret < 0) {
420 netdev_warn(dev->net, "Error writing E2P_CMD\n");
421 return ret;
422 }
423
424 ret = smsc75xx_wait_eeprom(dev);
425 if (ret < 0)
426 return ret;
427
428 offset++;
429 }
430
431 return 0;
432}
433
434static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev)
435{
436 int i, ret;
437
438 for (i = 0; i < 100; i++) {
439 u32 dp_sel;
440 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
441 if (ret < 0) {
442 netdev_warn(dev->net, "Error reading DP_SEL\n");
443 return ret;
444 }
445
446 if (dp_sel & DP_SEL_DPRDY)
447 return 0;
448
449 udelay(40);
450 }
451
452 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n");
453
454 return -EIO;
455}
456
457static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr,
458 u32 length, u32 *buf)
459{
460 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
461 u32 dp_sel;
462 int i, ret;
463
464 mutex_lock(&pdata->dataport_mutex);
465
466 ret = smsc75xx_dataport_wait_not_busy(dev);
467 if (ret < 0) {
468 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n");
469 goto done;
470 }
471
472 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
473 if (ret < 0) {
474 netdev_warn(dev->net, "Error reading DP_SEL\n");
475 goto done;
476 }
477
478 dp_sel &= ~DP_SEL_RSEL;
479 dp_sel |= ram_select;
480 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel);
481 if (ret < 0) {
482 netdev_warn(dev->net, "Error writing DP_SEL\n");
483 goto done;
484 }
485
486 for (i = 0; i < length; i++) {
487 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i);
488 if (ret < 0) {
489 netdev_warn(dev->net, "Error writing DP_ADDR\n");
490 goto done;
491 }
492
493 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]);
494 if (ret < 0) {
495 netdev_warn(dev->net, "Error writing DP_DATA\n");
496 goto done;
497 }
498
499 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE);
500 if (ret < 0) {
501 netdev_warn(dev->net, "Error writing DP_CMD\n");
502 goto done;
503 }
504
505 ret = smsc75xx_dataport_wait_not_busy(dev);
506 if (ret < 0) {
507 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n");
508 goto done;
509 }
510 }
511
512done:
513 mutex_unlock(&pdata->dataport_mutex);
514 return ret;
515}
516
517
518static u32 smsc75xx_hash(char addr[ETH_ALEN])
519{
520 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
521}
522
523static void smsc75xx_deferred_multicast_write(struct work_struct *param)
524{
525 struct smsc75xx_priv *pdata =
526 container_of(param, struct smsc75xx_priv, set_multicast);
527 struct usbnet *dev = pdata->dev;
528 int ret;
529
530 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
531 pdata->rfe_ctl);
532
533 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN,
534 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table);
535
536 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
537 if (ret < 0)
538 netdev_warn(dev->net, "Error writing RFE_CRL\n");
539}
540
541static void smsc75xx_set_multicast(struct net_device *netdev)
542{
543 struct usbnet *dev = netdev_priv(netdev);
544 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
545 unsigned long flags;
546 int i;
547
548 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
549
550 pdata->rfe_ctl &=
551 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF);
552 pdata->rfe_ctl |= RFE_CTL_AB;
553
554 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
555 pdata->multicast_hash_table[i] = 0;
556
557 if (dev->net->flags & IFF_PROMISC) {
558 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
559 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU;
560 } else if (dev->net->flags & IFF_ALLMULTI) {
561 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
562 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF;
563 } else if (!netdev_mc_empty(dev->net)) {
564 struct netdev_hw_addr *ha;
565
566 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n");
567
568 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF;
569
570 netdev_for_each_mc_addr(ha, netdev) {
571 u32 bitnum = smsc75xx_hash(ha->addr);
572 pdata->multicast_hash_table[bitnum / 32] |=
573 (1 << (bitnum % 32));
574 }
575 } else {
576 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
577 pdata->rfe_ctl |= RFE_CTL_DPF;
578 }
579
580 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
581
582
583 schedule_work(&pdata->set_multicast);
584}
585
586static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex,
587 u16 lcladv, u16 rmtadv)
588{
589 u32 flow = 0, fct_flow = 0;
590 int ret;
591
592 if (duplex == DUPLEX_FULL) {
593 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
594
595 if (cap & FLOW_CTRL_TX) {
596 flow = (FLOW_TX_FCEN | 0xFFFF);
597
598 fct_flow = (8 << 8) | 32;
599 }
600
601 if (cap & FLOW_CTRL_RX)
602 flow |= FLOW_RX_FCEN;
603
604 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
605 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
606 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
607 } else {
608 netif_dbg(dev, link, dev->net, "half duplex\n");
609 }
610
611 ret = smsc75xx_write_reg(dev, FLOW, flow);
612 if (ret < 0) {
613 netdev_warn(dev->net, "Error writing FLOW\n");
614 return ret;
615 }
616
617 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow);
618 if (ret < 0) {
619 netdev_warn(dev->net, "Error writing FCT_FLOW\n");
620 return ret;
621 }
622
623 return 0;
624}
625
626static int smsc75xx_link_reset(struct usbnet *dev)
627{
628 struct mii_if_info *mii = &dev->mii;
629 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
630 u16 lcladv, rmtadv;
631 int ret;
632
633
634 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC,
635 PHY_INT_SRC_CLEAR_ALL);
636
637 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
638 if (ret < 0) {
639 netdev_warn(dev->net, "Error writing INT_STS\n");
640 return ret;
641 }
642
643 mii_check_media(mii, 1, 1);
644 mii_ethtool_gset(&dev->mii, &ecmd);
645 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
646 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
647
648 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
649 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
650
651 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
652}
653
654static void smsc75xx_status(struct usbnet *dev, struct urb *urb)
655{
656 u32 intdata;
657
658 if (urb->actual_length != 4) {
659 netdev_warn(dev->net, "unexpected urb length %d\n",
660 urb->actual_length);
661 return;
662 }
663
664 intdata = get_unaligned_le32(urb->transfer_buffer);
665
666 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
667
668 if (intdata & INT_ENP_PHY_INT)
669 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
670 else
671 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
672 intdata);
673}
674
675static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net)
676{
677 return MAX_EEPROM_SIZE;
678}
679
680static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev,
681 struct ethtool_eeprom *ee, u8 *data)
682{
683 struct usbnet *dev = netdev_priv(netdev);
684
685 ee->magic = LAN75XX_EEPROM_MAGIC;
686
687 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data);
688}
689
690static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev,
691 struct ethtool_eeprom *ee, u8 *data)
692{
693 struct usbnet *dev = netdev_priv(netdev);
694
695 if (ee->magic != LAN75XX_EEPROM_MAGIC) {
696 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n",
697 ee->magic);
698 return -EINVAL;
699 }
700
701 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data);
702}
703
704static void smsc75xx_ethtool_get_wol(struct net_device *net,
705 struct ethtool_wolinfo *wolinfo)
706{
707 struct usbnet *dev = netdev_priv(net);
708 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
709
710 wolinfo->supported = SUPPORTED_WAKE;
711 wolinfo->wolopts = pdata->wolopts;
712}
713
714static int smsc75xx_ethtool_set_wol(struct net_device *net,
715 struct ethtool_wolinfo *wolinfo)
716{
717 struct usbnet *dev = netdev_priv(net);
718 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
719 int ret;
720
721 if (wolinfo->wolopts & ~SUPPORTED_WAKE)
722 return -EINVAL;
723
724 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
725
726 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
727 if (ret < 0)
728 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
729
730 return ret;
731}
732
733static const struct ethtool_ops smsc75xx_ethtool_ops = {
734 .get_link = usbnet_get_link,
735 .nway_reset = usbnet_nway_reset,
736 .get_drvinfo = usbnet_get_drvinfo,
737 .get_msglevel = usbnet_get_msglevel,
738 .set_msglevel = usbnet_set_msglevel,
739 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
740 .get_eeprom = smsc75xx_ethtool_get_eeprom,
741 .set_eeprom = smsc75xx_ethtool_set_eeprom,
742 .get_wol = smsc75xx_ethtool_get_wol,
743 .set_wol = smsc75xx_ethtool_set_wol,
744 .get_link_ksettings = usbnet_get_link_ksettings,
745 .set_link_ksettings = usbnet_set_link_ksettings,
746};
747
748static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
749{
750 struct usbnet *dev = netdev_priv(netdev);
751
752 if (!netif_running(netdev))
753 return -EINVAL;
754
755 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
756}
757
758static void smsc75xx_init_mac_address(struct usbnet *dev)
759{
760 const u8 *mac_addr;
761
762
763 mac_addr = of_get_mac_address(dev->udev->dev.of_node);
764 if (!IS_ERR(mac_addr)) {
765 ether_addr_copy(dev->net->dev_addr, mac_addr);
766 return;
767 }
768
769
770 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
771 dev->net->dev_addr) == 0) {
772 if (is_valid_ether_addr(dev->net->dev_addr)) {
773
774 netif_dbg(dev, ifup, dev->net,
775 "MAC address read from EEPROM\n");
776 return;
777 }
778 }
779
780
781 eth_hw_addr_random(dev->net);
782 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
783}
784
785static int smsc75xx_set_mac_address(struct usbnet *dev)
786{
787 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
788 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
789 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
790
791 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi);
792 if (ret < 0) {
793 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret);
794 return ret;
795 }
796
797 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo);
798 if (ret < 0) {
799 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret);
800 return ret;
801 }
802
803 addr_hi |= ADDR_FILTX_FB_VALID;
804 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi);
805 if (ret < 0) {
806 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret);
807 return ret;
808 }
809
810 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo);
811 if (ret < 0)
812 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret);
813
814 return ret;
815}
816
817static int smsc75xx_phy_initialize(struct usbnet *dev)
818{
819 int bmcr, ret, timeout = 0;
820
821
822 dev->mii.dev = dev->net;
823 dev->mii.mdio_read = smsc75xx_mdio_read;
824 dev->mii.mdio_write = smsc75xx_mdio_write;
825 dev->mii.phy_id_mask = 0x1f;
826 dev->mii.reg_num_mask = 0x1f;
827 dev->mii.supports_gmii = 1;
828 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID;
829
830
831 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
832
833 do {
834 msleep(10);
835 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
836 if (bmcr < 0) {
837 netdev_warn(dev->net, "Error reading MII_BMCR\n");
838 return bmcr;
839 }
840 timeout++;
841 } while ((bmcr & BMCR_RESET) && (timeout < 100));
842
843 if (timeout >= 100) {
844 netdev_warn(dev->net, "timeout on PHY Reset\n");
845 return -EIO;
846 }
847
848
849 smsc75xx_phy_gig_workaround(dev);
850
851 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
852 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
853 ADVERTISE_PAUSE_ASYM);
854 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
855 ADVERTISE_1000FULL);
856
857
858 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
859 if (ret < 0) {
860 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
861 return ret;
862 }
863
864 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff);
865
866 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
867 PHY_INT_MASK_DEFAULT);
868 mii_nway_restart(&dev->mii);
869
870 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
871 return 0;
872}
873
874static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size)
875{
876 int ret = 0;
877 u32 buf;
878 bool rxenabled;
879
880 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
881 if (ret < 0) {
882 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
883 return ret;
884 }
885
886 rxenabled = ((buf & MAC_RX_RXEN) != 0);
887
888 if (rxenabled) {
889 buf &= ~MAC_RX_RXEN;
890 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
891 if (ret < 0) {
892 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
893 return ret;
894 }
895 }
896
897
898 buf &= ~MAC_RX_MAX_SIZE;
899 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE);
900
901 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
902 if (ret < 0) {
903 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
904 return ret;
905 }
906
907 if (rxenabled) {
908 buf |= MAC_RX_RXEN;
909 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
910 if (ret < 0) {
911 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
912 return ret;
913 }
914 }
915
916 return 0;
917}
918
919static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu)
920{
921 struct usbnet *dev = netdev_priv(netdev);
922 int ret;
923
924 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
925 if (ret < 0) {
926 netdev_warn(dev->net, "Failed to set mac rx frame length\n");
927 return ret;
928 }
929
930 return usbnet_change_mtu(netdev, new_mtu);
931}
932
933
934static int smsc75xx_set_features(struct net_device *netdev,
935 netdev_features_t features)
936{
937 struct usbnet *dev = netdev_priv(netdev);
938 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
939 unsigned long flags;
940 int ret;
941
942 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
943
944 if (features & NETIF_F_RXCSUM)
945 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
946 else
947 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
948
949 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
950
951
952 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
953 if (ret < 0) {
954 netdev_warn(dev->net, "Error writing RFE_CTL\n");
955 return ret;
956 }
957 return 0;
958}
959
960static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)
961{
962 int timeout = 0;
963
964 do {
965 u32 buf;
966 int ret;
967
968 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm);
969
970 if (ret < 0) {
971 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
972 return ret;
973 }
974
975 if (buf & PMT_CTL_DEV_RDY)
976 return 0;
977
978 msleep(10);
979 timeout++;
980 } while (timeout < 100);
981
982 netdev_warn(dev->net, "timeout waiting for device ready\n");
983 return -EIO;
984}
985
986static int smsc75xx_phy_gig_workaround(struct usbnet *dev)
987{
988 struct mii_if_info *mii = &dev->mii;
989 int ret = 0, timeout = 0;
990 u32 buf, link_up = 0;
991
992
993 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040);
994
995
996 do {
997 link_up = smsc75xx_link_ok_nopm(dev);
998 usleep_range(10000, 20000);
999 timeout++;
1000 } while ((!link_up) && (timeout < 1000));
1001
1002 if (timeout >= 1000) {
1003 netdev_warn(dev->net, "Timeout waiting for PHY link up\n");
1004 return -EIO;
1005 }
1006
1007
1008 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1009 if (ret < 0) {
1010 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1011 return ret;
1012 }
1013
1014 buf |= PMT_CTL_PHY_RST;
1015
1016 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1017 if (ret < 0) {
1018 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1019 return ret;
1020 }
1021
1022 timeout = 0;
1023 do {
1024 usleep_range(10000, 20000);
1025 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1026 if (ret < 0) {
1027 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n",
1028 ret);
1029 return ret;
1030 }
1031 timeout++;
1032 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1033
1034 if (timeout >= 100) {
1035 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1036 return -EIO;
1037 }
1038
1039 return 0;
1040}
1041
1042static int smsc75xx_reset(struct usbnet *dev)
1043{
1044 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1045 u32 buf;
1046 int ret = 0, timeout;
1047
1048 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n");
1049
1050 ret = smsc75xx_wait_ready(dev, 0);
1051 if (ret < 0) {
1052 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n");
1053 return ret;
1054 }
1055
1056 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1057 if (ret < 0) {
1058 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1059 return ret;
1060 }
1061
1062 buf |= HW_CFG_LRST;
1063
1064 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1065 if (ret < 0) {
1066 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1067 return ret;
1068 }
1069
1070 timeout = 0;
1071 do {
1072 msleep(10);
1073 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1074 if (ret < 0) {
1075 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1076 return ret;
1077 }
1078 timeout++;
1079 } while ((buf & HW_CFG_LRST) && (timeout < 100));
1080
1081 if (timeout >= 100) {
1082 netdev_warn(dev->net, "timeout on completion of Lite Reset\n");
1083 return -EIO;
1084 }
1085
1086 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n");
1087
1088 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1089 if (ret < 0) {
1090 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1091 return ret;
1092 }
1093
1094 buf |= PMT_CTL_PHY_RST;
1095
1096 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1097 if (ret < 0) {
1098 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1099 return ret;
1100 }
1101
1102 timeout = 0;
1103 do {
1104 msleep(10);
1105 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1106 if (ret < 0) {
1107 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1108 return ret;
1109 }
1110 timeout++;
1111 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1112
1113 if (timeout >= 100) {
1114 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1115 return -EIO;
1116 }
1117
1118 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n");
1119
1120 ret = smsc75xx_set_mac_address(dev);
1121 if (ret < 0) {
1122 netdev_warn(dev->net, "Failed to set mac address\n");
1123 return ret;
1124 }
1125
1126 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1127 dev->net->dev_addr);
1128
1129 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1130 if (ret < 0) {
1131 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1132 return ret;
1133 }
1134
1135 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1136 buf);
1137
1138 buf |= HW_CFG_BIR;
1139
1140 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1141 if (ret < 0) {
1142 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1143 return ret;
1144 }
1145
1146 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1147 if (ret < 0) {
1148 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1149 return ret;
1150 }
1151
1152 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
1153 buf);
1154
1155 if (!turbo_mode) {
1156 buf = 0;
1157 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1158 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1159 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1160 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1161 } else {
1162 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1163 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1164 }
1165
1166 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1167 (ulong)dev->rx_urb_size);
1168
1169 ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
1170 if (ret < 0) {
1171 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret);
1172 return ret;
1173 }
1174
1175 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
1176 if (ret < 0) {
1177 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret);
1178 return ret;
1179 }
1180
1181 netif_dbg(dev, ifup, dev->net,
1182 "Read Value from BURST_CAP after writing: 0x%08x\n", buf);
1183
1184 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1185 if (ret < 0) {
1186 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret);
1187 return ret;
1188 }
1189
1190 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
1191 if (ret < 0) {
1192 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret);
1193 return ret;
1194 }
1195
1196 netif_dbg(dev, ifup, dev->net,
1197 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf);
1198
1199 if (turbo_mode) {
1200 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1201 if (ret < 0) {
1202 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1203 return ret;
1204 }
1205
1206 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1207
1208 buf |= (HW_CFG_MEF | HW_CFG_BCE);
1209
1210 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1211 if (ret < 0) {
1212 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1213 return ret;
1214 }
1215
1216 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1217 if (ret < 0) {
1218 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1219 return ret;
1220 }
1221
1222 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1223 }
1224
1225
1226 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1227 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1228 if (ret < 0) {
1229 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret);
1230 return ret;
1231 }
1232
1233 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf);
1234
1235 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1236 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1237 if (ret < 0) {
1238 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret);
1239 return ret;
1240 }
1241
1242 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf);
1243
1244 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
1245 if (ret < 0) {
1246 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret);
1247 return ret;
1248 }
1249
1250 ret = smsc75xx_read_reg(dev, ID_REV, &buf);
1251 if (ret < 0) {
1252 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret);
1253 return ret;
1254 }
1255
1256 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf);
1257
1258 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
1259 if (ret < 0) {
1260 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret);
1261 return ret;
1262 }
1263
1264
1265 if (!(buf & E2P_CMD_LOADED)) {
1266 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
1267 if (ret < 0) {
1268 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret);
1269 return ret;
1270 }
1271
1272 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
1273 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
1274
1275 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
1276 if (ret < 0) {
1277 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret);
1278 return ret;
1279 }
1280 }
1281
1282 ret = smsc75xx_write_reg(dev, FLOW, 0);
1283 if (ret < 0) {
1284 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
1285 return ret;
1286 }
1287
1288 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
1289 if (ret < 0) {
1290 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret);
1291 return ret;
1292 }
1293
1294
1295 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1296 if (ret < 0) {
1297 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1298 return ret;
1299 }
1300
1301 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
1302
1303 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1304 if (ret < 0) {
1305 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret);
1306 return ret;
1307 }
1308
1309 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1310 if (ret < 0) {
1311 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1312 return ret;
1313 }
1314
1315 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n",
1316 pdata->rfe_ctl);
1317
1318
1319 smsc75xx_set_features(dev->net, dev->net->features);
1320
1321 smsc75xx_set_multicast(dev->net);
1322
1323 ret = smsc75xx_phy_initialize(dev);
1324 if (ret < 0) {
1325 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret);
1326 return ret;
1327 }
1328
1329 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
1330 if (ret < 0) {
1331 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret);
1332 return ret;
1333 }
1334
1335
1336 buf |= INT_ENP_PHY_INT;
1337
1338 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
1339 if (ret < 0) {
1340 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret);
1341 return ret;
1342 }
1343
1344
1345 ret = smsc75xx_read_reg(dev, MAC_CR, &buf);
1346 if (ret < 0) {
1347 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret);
1348 return ret;
1349 }
1350
1351 buf |= (MAC_CR_ADD | MAC_CR_ASD);
1352 ret = smsc75xx_write_reg(dev, MAC_CR, buf);
1353 if (ret < 0) {
1354 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret);
1355 return ret;
1356 }
1357
1358 ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
1359 if (ret < 0) {
1360 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret);
1361 return ret;
1362 }
1363
1364 buf |= MAC_TX_TXEN;
1365
1366 ret = smsc75xx_write_reg(dev, MAC_TX, buf);
1367 if (ret < 0) {
1368 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret);
1369 return ret;
1370 }
1371
1372 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf);
1373
1374 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
1375 if (ret < 0) {
1376 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret);
1377 return ret;
1378 }
1379
1380 buf |= FCT_TX_CTL_EN;
1381
1382 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
1383 if (ret < 0) {
1384 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret);
1385 return ret;
1386 }
1387
1388 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf);
1389
1390 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1391 if (ret < 0) {
1392 netdev_warn(dev->net, "Failed to set max rx frame length\n");
1393 return ret;
1394 }
1395
1396 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
1397 if (ret < 0) {
1398 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
1399 return ret;
1400 }
1401
1402 buf |= MAC_RX_RXEN;
1403
1404 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
1405 if (ret < 0) {
1406 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
1407 return ret;
1408 }
1409
1410 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf);
1411
1412 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
1413 if (ret < 0) {
1414 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret);
1415 return ret;
1416 }
1417
1418 buf |= FCT_RX_CTL_EN;
1419
1420 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
1421 if (ret < 0) {
1422 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret);
1423 return ret;
1424 }
1425
1426 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf);
1427
1428 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n");
1429 return 0;
1430}
1431
1432static const struct net_device_ops smsc75xx_netdev_ops = {
1433 .ndo_open = usbnet_open,
1434 .ndo_stop = usbnet_stop,
1435 .ndo_start_xmit = usbnet_start_xmit,
1436 .ndo_tx_timeout = usbnet_tx_timeout,
1437 .ndo_get_stats64 = usbnet_get_stats64,
1438 .ndo_change_mtu = smsc75xx_change_mtu,
1439 .ndo_set_mac_address = eth_mac_addr,
1440 .ndo_validate_addr = eth_validate_addr,
1441 .ndo_do_ioctl = smsc75xx_ioctl,
1442 .ndo_set_rx_mode = smsc75xx_set_multicast,
1443 .ndo_set_features = smsc75xx_set_features,
1444};
1445
1446static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
1447{
1448 struct smsc75xx_priv *pdata = NULL;
1449 int ret;
1450
1451 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1452
1453 ret = usbnet_get_endpoints(dev, intf);
1454 if (ret < 0) {
1455 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1456 return ret;
1457 }
1458
1459 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
1460 GFP_KERNEL);
1461
1462 pdata = (struct smsc75xx_priv *)(dev->data[0]);
1463 if (!pdata)
1464 return -ENOMEM;
1465
1466 pdata->dev = dev;
1467
1468 spin_lock_init(&pdata->rfe_ctl_lock);
1469 mutex_init(&pdata->dataport_mutex);
1470
1471 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
1472
1473 if (DEFAULT_TX_CSUM_ENABLE)
1474 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1475
1476 if (DEFAULT_RX_CSUM_ENABLE)
1477 dev->net->features |= NETIF_F_RXCSUM;
1478
1479 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1480 NETIF_F_RXCSUM;
1481
1482 ret = smsc75xx_wait_ready(dev, 0);
1483 if (ret < 0) {
1484 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n");
1485 return ret;
1486 }
1487
1488 smsc75xx_init_mac_address(dev);
1489
1490
1491 ret = smsc75xx_reset(dev);
1492 if (ret < 0) {
1493 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret);
1494 return ret;
1495 }
1496
1497 dev->net->netdev_ops = &smsc75xx_netdev_ops;
1498 dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
1499 dev->net->flags |= IFF_MULTICAST;
1500 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
1501 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1502 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE;
1503 return 0;
1504}
1505
1506static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1507{
1508 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1509 if (pdata) {
1510 cancel_work_sync(&pdata->set_multicast);
1511 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1512 kfree(pdata);
1513 pdata = NULL;
1514 dev->data[0] = 0;
1515 }
1516}
1517
1518static u16 smsc_crc(const u8 *buffer, size_t len)
1519{
1520 return bitrev16(crc16(0xFFFF, buffer, len));
1521}
1522
1523static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
1524 u32 wuf_mask1)
1525{
1526 int cfg_base = WUF_CFGX + filter * 4;
1527 int mask_base = WUF_MASKX + filter * 16;
1528 int ret;
1529
1530 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg);
1531 if (ret < 0) {
1532 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1533 return ret;
1534 }
1535
1536 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1);
1537 if (ret < 0) {
1538 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1539 return ret;
1540 }
1541
1542 ret = smsc75xx_write_reg(dev, mask_base + 4, 0);
1543 if (ret < 0) {
1544 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1545 return ret;
1546 }
1547
1548 ret = smsc75xx_write_reg(dev, mask_base + 8, 0);
1549 if (ret < 0) {
1550 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1551 return ret;
1552 }
1553
1554 ret = smsc75xx_write_reg(dev, mask_base + 12, 0);
1555 if (ret < 0) {
1556 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1557 return ret;
1558 }
1559
1560 return 0;
1561}
1562
1563static int smsc75xx_enter_suspend0(struct usbnet *dev)
1564{
1565 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1566 u32 val;
1567 int ret;
1568
1569 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1570 if (ret < 0) {
1571 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1572 return ret;
1573 }
1574
1575 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
1576 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
1577
1578 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1579 if (ret < 0) {
1580 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1581 return ret;
1582 }
1583
1584 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1585
1586 return 0;
1587}
1588
1589static int smsc75xx_enter_suspend1(struct usbnet *dev)
1590{
1591 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1592 u32 val;
1593 int ret;
1594
1595 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1596 if (ret < 0) {
1597 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1598 return ret;
1599 }
1600
1601 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1602 val |= PMT_CTL_SUS_MODE_1;
1603
1604 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1605 if (ret < 0) {
1606 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1607 return ret;
1608 }
1609
1610
1611 val &= ~PMT_CTL_WUPS;
1612 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1613
1614 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1615 if (ret < 0) {
1616 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1617 return ret;
1618 }
1619
1620 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1621
1622 return 0;
1623}
1624
1625static int smsc75xx_enter_suspend2(struct usbnet *dev)
1626{
1627 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1628 u32 val;
1629 int ret;
1630
1631 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1632 if (ret < 0) {
1633 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1634 return ret;
1635 }
1636
1637 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1638 val |= PMT_CTL_SUS_MODE_2;
1639
1640 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1641 if (ret < 0) {
1642 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1643 return ret;
1644 }
1645
1646 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1647
1648 return 0;
1649}
1650
1651static int smsc75xx_enter_suspend3(struct usbnet *dev)
1652{
1653 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1654 u32 val;
1655 int ret;
1656
1657 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val);
1658 if (ret < 0) {
1659 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n");
1660 return ret;
1661 }
1662
1663 if (val & FCT_RX_CTL_RXUSED) {
1664 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n");
1665 return -EBUSY;
1666 }
1667
1668 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1669 if (ret < 0) {
1670 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1671 return ret;
1672 }
1673
1674 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1675 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN;
1676
1677 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1678 if (ret < 0) {
1679 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1680 return ret;
1681 }
1682
1683
1684 val &= ~PMT_CTL_WUPS;
1685 val |= PMT_CTL_WUPS_WOL;
1686
1687 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1688 if (ret < 0) {
1689 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1690 return ret;
1691 }
1692
1693 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1694
1695 return 0;
1696}
1697
1698static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1699{
1700 struct mii_if_info *mii = &dev->mii;
1701 int ret;
1702
1703 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1704
1705
1706 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1707 if (ret < 0) {
1708 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
1709 return ret;
1710 }
1711
1712
1713 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1714 if (ret < 0) {
1715 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n");
1716 return ret;
1717 }
1718
1719 ret |= mask;
1720
1721 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1722
1723 return 0;
1724}
1725
1726static int smsc75xx_link_ok_nopm(struct usbnet *dev)
1727{
1728 struct mii_if_info *mii = &dev->mii;
1729 int ret;
1730
1731
1732 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1733 if (ret < 0) {
1734 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1735 return ret;
1736 }
1737
1738 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1739 if (ret < 0) {
1740 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1741 return ret;
1742 }
1743
1744 return !!(ret & BMSR_LSTATUS);
1745}
1746
1747static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up)
1748{
1749 int ret;
1750
1751 if (!netif_running(dev->net)) {
1752
1753 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1754 return smsc75xx_enter_suspend2(dev);
1755 }
1756
1757 if (!link_up) {
1758
1759 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1760
1761
1762 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1763 PHY_INT_MASK_ANEG_COMP);
1764 if (ret < 0) {
1765 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1766 return ret;
1767 }
1768
1769 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1770 return smsc75xx_enter_suspend1(dev);
1771 }
1772
1773
1774 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1775 PHY_INT_MASK_LINK_DOWN);
1776 if (ret < 0) {
1777 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1778 return ret;
1779 }
1780
1781 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1782 return smsc75xx_enter_suspend3(dev);
1783}
1784
1785static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
1786{
1787 struct usbnet *dev = usb_get_intfdata(intf);
1788 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1789 u32 val, link_up;
1790 int ret;
1791
1792 ret = usbnet_suspend(intf, message);
1793 if (ret < 0) {
1794 netdev_warn(dev->net, "usbnet_suspend error\n");
1795 return ret;
1796 }
1797
1798 if (pdata->suspend_flags) {
1799 netdev_warn(dev->net, "error during last resume\n");
1800 pdata->suspend_flags = 0;
1801 }
1802
1803
1804 link_up = smsc75xx_link_ok_nopm(dev);
1805
1806 if (message.event == PM_EVENT_AUTO_SUSPEND) {
1807 ret = smsc75xx_autosuspend(dev, link_up);
1808 goto done;
1809 }
1810
1811
1812
1813
1814
1815 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1816 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1817 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1818
1819
1820 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1821 if (ret < 0) {
1822 netdev_warn(dev->net, "Error reading WUCSR\n");
1823 goto done;
1824 }
1825
1826 val &= ~(WUCSR_MPEN | WUCSR_WUEN);
1827
1828 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1829 if (ret < 0) {
1830 netdev_warn(dev->net, "Error writing WUCSR\n");
1831 goto done;
1832 }
1833
1834 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1835 if (ret < 0) {
1836 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1837 goto done;
1838 }
1839
1840 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN);
1841
1842 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1843 if (ret < 0) {
1844 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1845 goto done;
1846 }
1847
1848 ret = smsc75xx_enter_suspend2(dev);
1849 goto done;
1850 }
1851
1852 if (pdata->wolopts & WAKE_PHY) {
1853 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1854 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN));
1855 if (ret < 0) {
1856 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1857 goto done;
1858 }
1859
1860
1861
1862
1863 if (!link_up) {
1864 struct mii_if_info *mii = &dev->mii;
1865 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1866
1867
1868 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id,
1869 PHY_MODE_CTRL_STS);
1870 if (ret < 0) {
1871 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n");
1872 goto done;
1873 }
1874
1875 ret |= MODE_CTRL_STS_EDPWRDOWN;
1876
1877 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id,
1878 PHY_MODE_CTRL_STS, ret);
1879
1880
1881 ret = smsc75xx_enter_suspend1(dev);
1882 goto done;
1883 }
1884 }
1885
1886 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
1887 int i, filter = 0;
1888
1889
1890 for (i = 0; i < WUF_NUM; i++) {
1891 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0);
1892 if (ret < 0) {
1893 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1894 goto done;
1895 }
1896 }
1897
1898 if (pdata->wolopts & WAKE_MCAST) {
1899 const u8 mcast[] = {0x01, 0x00, 0x5E};
1900 netdev_info(dev->net, "enabling multicast detection\n");
1901
1902 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST
1903 | smsc_crc(mcast, 3);
1904 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007);
1905 if (ret < 0) {
1906 netdev_warn(dev->net, "Error writing wakeup filter\n");
1907 goto done;
1908 }
1909 }
1910
1911 if (pdata->wolopts & WAKE_ARP) {
1912 const u8 arp[] = {0x08, 0x06};
1913 netdev_info(dev->net, "enabling ARP detection\n");
1914
1915 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16)
1916 | smsc_crc(arp, 2);
1917 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003);
1918 if (ret < 0) {
1919 netdev_warn(dev->net, "Error writing wakeup filter\n");
1920 goto done;
1921 }
1922 }
1923
1924
1925 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1926 if (ret < 0) {
1927 netdev_warn(dev->net, "Error reading WUCSR\n");
1928 goto done;
1929 }
1930
1931 val |= WUCSR_WUFR;
1932
1933 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1934 if (ret < 0) {
1935 netdev_warn(dev->net, "Error writing WUCSR\n");
1936 goto done;
1937 }
1938
1939 netdev_info(dev->net, "enabling packet match detection\n");
1940 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1941 if (ret < 0) {
1942 netdev_warn(dev->net, "Error reading WUCSR\n");
1943 goto done;
1944 }
1945
1946 val |= WUCSR_WUEN;
1947
1948 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1949 if (ret < 0) {
1950 netdev_warn(dev->net, "Error writing WUCSR\n");
1951 goto done;
1952 }
1953 } else {
1954 netdev_info(dev->net, "disabling packet match detection\n");
1955 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1956 if (ret < 0) {
1957 netdev_warn(dev->net, "Error reading WUCSR\n");
1958 goto done;
1959 }
1960
1961 val &= ~WUCSR_WUEN;
1962
1963 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1964 if (ret < 0) {
1965 netdev_warn(dev->net, "Error writing WUCSR\n");
1966 goto done;
1967 }
1968 }
1969
1970
1971 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1972 if (ret < 0) {
1973 netdev_warn(dev->net, "Error reading WUCSR\n");
1974 goto done;
1975 }
1976
1977 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN);
1978
1979 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1980 if (ret < 0) {
1981 netdev_warn(dev->net, "Error writing WUCSR\n");
1982 goto done;
1983 }
1984
1985 if (pdata->wolopts & WAKE_PHY) {
1986 netdev_info(dev->net, "enabling PHY wakeup\n");
1987
1988 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1989 if (ret < 0) {
1990 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1991 goto done;
1992 }
1993
1994
1995 val &= ~PMT_CTL_WUPS;
1996 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1997
1998 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1999 if (ret < 0) {
2000 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2001 goto done;
2002 }
2003 }
2004
2005 if (pdata->wolopts & WAKE_MAGIC) {
2006 netdev_info(dev->net, "enabling magic packet wakeup\n");
2007 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2008 if (ret < 0) {
2009 netdev_warn(dev->net, "Error reading WUCSR\n");
2010 goto done;
2011 }
2012
2013
2014 val |= WUCSR_MPR | WUCSR_MPEN;
2015
2016 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2017 if (ret < 0) {
2018 netdev_warn(dev->net, "Error writing WUCSR\n");
2019 goto done;
2020 }
2021 }
2022
2023 if (pdata->wolopts & WAKE_BCAST) {
2024 netdev_info(dev->net, "enabling broadcast detection\n");
2025 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2026 if (ret < 0) {
2027 netdev_warn(dev->net, "Error reading WUCSR\n");
2028 goto done;
2029 }
2030
2031 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN;
2032
2033 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2034 if (ret < 0) {
2035 netdev_warn(dev->net, "Error writing WUCSR\n");
2036 goto done;
2037 }
2038 }
2039
2040 if (pdata->wolopts & WAKE_UCAST) {
2041 netdev_info(dev->net, "enabling unicast detection\n");
2042 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2043 if (ret < 0) {
2044 netdev_warn(dev->net, "Error reading WUCSR\n");
2045 goto done;
2046 }
2047
2048 val |= WUCSR_WUFR | WUCSR_PFDA_EN;
2049
2050 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2051 if (ret < 0) {
2052 netdev_warn(dev->net, "Error writing WUCSR\n");
2053 goto done;
2054 }
2055 }
2056
2057
2058 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val);
2059 if (ret < 0) {
2060 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
2061 goto done;
2062 }
2063
2064 val |= MAC_RX_RXEN;
2065
2066 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val);
2067 if (ret < 0) {
2068 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
2069 goto done;
2070 }
2071
2072
2073 netdev_info(dev->net, "entering SUSPEND0 mode\n");
2074 ret = smsc75xx_enter_suspend0(dev);
2075
2076done:
2077
2078
2079
2080
2081 if (ret && PMSG_IS_AUTO(message))
2082 usbnet_resume(intf);
2083 return ret;
2084}
2085
2086static int smsc75xx_resume(struct usb_interface *intf)
2087{
2088 struct usbnet *dev = usb_get_intfdata(intf);
2089 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
2090 u8 suspend_flags = pdata->suspend_flags;
2091 int ret;
2092 u32 val;
2093
2094 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
2095
2096
2097 pdata->suspend_flags = 0;
2098
2099 if (suspend_flags & SUSPEND_ALLMODES) {
2100
2101 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2102 if (ret < 0) {
2103 netdev_warn(dev->net, "Error reading WUCSR\n");
2104 return ret;
2105 }
2106
2107 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN
2108 | WUCSR_BCST_EN);
2109
2110 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2111 if (ret < 0) {
2112 netdev_warn(dev->net, "Error writing WUCSR\n");
2113 return ret;
2114 }
2115
2116
2117 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2118 if (ret < 0) {
2119 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2120 return ret;
2121 }
2122
2123 val &= ~PMT_CTL_WOL_EN;
2124 val |= PMT_CTL_WUPS;
2125
2126 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2127 if (ret < 0) {
2128 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2129 return ret;
2130 }
2131 }
2132
2133 if (suspend_flags & SUSPEND_SUSPEND2) {
2134 netdev_info(dev->net, "resuming from SUSPEND2\n");
2135
2136 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2137 if (ret < 0) {
2138 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2139 return ret;
2140 }
2141
2142 val |= PMT_CTL_PHY_PWRUP;
2143
2144 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2145 if (ret < 0) {
2146 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2147 return ret;
2148 }
2149 }
2150
2151 ret = smsc75xx_wait_ready(dev, 1);
2152 if (ret < 0) {
2153 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n");
2154 return ret;
2155 }
2156
2157 return usbnet_resume(intf);
2158}
2159
2160static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb,
2161 u32 rx_cmd_a, u32 rx_cmd_b)
2162{
2163 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2164 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
2165 skb->ip_summed = CHECKSUM_NONE;
2166 } else {
2167 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
2168 skb->ip_summed = CHECKSUM_COMPLETE;
2169 }
2170}
2171
2172static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
2173{
2174
2175 if (skb->len < dev->net->hard_header_len)
2176 return 0;
2177
2178 while (skb->len > 0) {
2179 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2180 struct sk_buff *ax_skb;
2181 unsigned char *packet;
2182
2183 rx_cmd_a = get_unaligned_le32(skb->data);
2184 skb_pull(skb, 4);
2185
2186 rx_cmd_b = get_unaligned_le32(skb->data);
2187 skb_pull(skb, 4 + RXW_PADDING);
2188
2189 packet = skb->data;
2190
2191
2192 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
2193 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2194
2195 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
2196 netif_dbg(dev, rx_err, dev->net,
2197 "Error rx_cmd_a=0x%08x\n", rx_cmd_a);
2198 dev->net->stats.rx_errors++;
2199 dev->net->stats.rx_dropped++;
2200
2201 if (rx_cmd_a & RX_CMD_A_FCS)
2202 dev->net->stats.rx_crc_errors++;
2203 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
2204 dev->net->stats.rx_frame_errors++;
2205 } else {
2206
2207 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) {
2208 netif_dbg(dev, rx_err, dev->net,
2209 "size err rx_cmd_a=0x%08x\n",
2210 rx_cmd_a);
2211 return 0;
2212 }
2213
2214
2215 if (skb->len == size) {
2216 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a,
2217 rx_cmd_b);
2218
2219 skb_trim(skb, skb->len - 4);
2220 skb->truesize = size + sizeof(struct sk_buff);
2221
2222 return 1;
2223 }
2224
2225 ax_skb = skb_clone(skb, GFP_ATOMIC);
2226 if (unlikely(!ax_skb)) {
2227 netdev_warn(dev->net, "Error allocating skb\n");
2228 return 0;
2229 }
2230
2231 ax_skb->len = size;
2232 ax_skb->data = packet;
2233 skb_set_tail_pointer(ax_skb, size);
2234
2235 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a,
2236 rx_cmd_b);
2237
2238 skb_trim(ax_skb, ax_skb->len - 4);
2239 ax_skb->truesize = size + sizeof(struct sk_buff);
2240
2241 usbnet_skb_return(dev, ax_skb);
2242 }
2243
2244 skb_pull(skb, size);
2245
2246
2247 if (skb->len)
2248 skb_pull(skb, align_count);
2249 }
2250
2251 return 1;
2252}
2253
2254static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
2255 struct sk_buff *skb, gfp_t flags)
2256{
2257 u32 tx_cmd_a, tx_cmd_b;
2258 void *ptr;
2259
2260 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
2261 dev_kfree_skb_any(skb);
2262 return NULL;
2263 }
2264
2265 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
2266
2267 if (skb->ip_summed == CHECKSUM_PARTIAL)
2268 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
2269
2270 if (skb_is_gso(skb)) {
2271 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
2272 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
2273
2274 tx_cmd_a |= TX_CMD_A_LSO;
2275 } else {
2276 tx_cmd_b = 0;
2277 }
2278
2279 ptr = skb_push(skb, 8);
2280 put_unaligned_le32(tx_cmd_a, ptr);
2281 put_unaligned_le32(tx_cmd_b, ptr + 4);
2282
2283 return skb;
2284}
2285
2286static int smsc75xx_manage_power(struct usbnet *dev, int on)
2287{
2288 dev->intf->needs_remote_wakeup = on;
2289 return 0;
2290}
2291
2292static const struct driver_info smsc75xx_info = {
2293 .description = "smsc75xx USB 2.0 Gigabit Ethernet",
2294 .bind = smsc75xx_bind,
2295 .unbind = smsc75xx_unbind,
2296 .link_reset = smsc75xx_link_reset,
2297 .reset = smsc75xx_reset,
2298 .rx_fixup = smsc75xx_rx_fixup,
2299 .tx_fixup = smsc75xx_tx_fixup,
2300 .status = smsc75xx_status,
2301 .manage_power = smsc75xx_manage_power,
2302 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2303};
2304
2305static const struct usb_device_id products[] = {
2306 {
2307
2308 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
2309 .driver_info = (unsigned long) &smsc75xx_info,
2310 },
2311 {
2312
2313 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
2314 .driver_info = (unsigned long) &smsc75xx_info,
2315 },
2316 { },
2317};
2318MODULE_DEVICE_TABLE(usb, products);
2319
2320static struct usb_driver smsc75xx_driver = {
2321 .name = SMSC_CHIPNAME,
2322 .id_table = products,
2323 .probe = usbnet_probe,
2324 .suspend = smsc75xx_suspend,
2325 .resume = smsc75xx_resume,
2326 .reset_resume = smsc75xx_resume,
2327 .disconnect = usbnet_disconnect,
2328 .disable_hub_initiated_lpm = 1,
2329 .supports_autosuspend = 1,
2330};
2331
2332module_usb_driver(smsc75xx_driver);
2333
2334MODULE_AUTHOR("Nancy Lin");
2335MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2336MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
2337MODULE_LICENSE("GPL");
2338
