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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / net / usb / smsc75xx.c
blob78c821349f484c4b21b9ebf08bb46b21d7e0bf77
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /***************************************************************************
3 *
4 * Copyright (C) 2007-2010 SMSC
5 *
6 *****************************************************************************/
7
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
53 struct 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
64 static bool turbo_mode = true;
65 module_param(turbo_mode, bool, 0644);
66 MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
67
68 static int smsc75xx_link_ok_nopm(struct usbnet *dev);
69 static int smsc75xx_phy_gig_workaround(struct usbnet *dev);
70
71 static int __must_check __smsc75xx_read_reg(struct usbnet *dev, u32 index,
72 u32 *data, int in_pm)
73 {
74 u32 buf;
75 int ret;
76 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
77
78 BUG_ON(!dev);
79
80 if (!in_pm)
81 fn = usbnet_read_cmd;
82 else
83 fn = usbnet_read_cmd_nopm;
84
85 ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
86 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
87 0, index, &buf, 4);
88 if (unlikely(ret < 4)) {
89 ret = ret < 0 ? ret : -ENODATA;
90
91 netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
92 index, ret);
93 return ret;
94 }
95
96 le32_to_cpus(&buf);
97 *data = buf;
98
99 return ret;
100 }
101
102 static int __must_check __smsc75xx_write_reg(struct usbnet *dev, u32 index,
103 u32 data, int in_pm)
104 {
105 u32 buf;
106 int ret;
107 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
108
109 BUG_ON(!dev);
110
111 if (!in_pm)
112 fn = usbnet_write_cmd;
113 else
114 fn = usbnet_write_cmd_nopm;
115
116 buf = data;
117 cpu_to_le32s(&buf);
118
119 ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
120 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
121 0, index, &buf, 4);
122 if (unlikely(ret < 0))
123 netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
124 index, ret);
125
126 return ret;
127 }
128
129 static int __must_check smsc75xx_read_reg_nopm(struct usbnet *dev, u32 index,
130 u32 *data)
131 {
132 return __smsc75xx_read_reg(dev, index, data, 1);
133 }
134
135 static int __must_check smsc75xx_write_reg_nopm(struct usbnet *dev, u32 index,
136 u32 data)
137 {
138 return __smsc75xx_write_reg(dev, index, data, 1);
139 }
140
141 static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index,
142 u32 *data)
143 {
144 return __smsc75xx_read_reg(dev, index, data, 0);
145 }
146
147 static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index,
148 u32 data)
149 {
150 return __smsc75xx_write_reg(dev, index, data, 0);
151 }
152
153 /* Loop until the read is completed with timeout
154 * called with phy_mutex held */
155 static __must_check int __smsc75xx_phy_wait_not_busy(struct usbnet *dev,
156 int in_pm)
157 {
158 unsigned long start_time = jiffies;
159 u32 val;
160 int ret;
161
162 do {
163 ret = __smsc75xx_read_reg(dev, MII_ACCESS, &val, in_pm);
164 if (ret < 0) {
165 netdev_warn(dev->net, "Error reading MII_ACCESS\n");
166 return ret;
167 }
168
169 if (!(val & MII_ACCESS_BUSY))
170 return 0;
171 } while (!time_after(jiffies, start_time + HZ));
172
173 return -EIO;
174 }
175
176 static int __smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx,
177 int in_pm)
178 {
179 struct usbnet *dev = netdev_priv(netdev);
180 u32 val, addr;
181 int ret;
182
183 mutex_lock(&dev->phy_mutex);
184
185 /* confirm MII not busy */
186 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
187 if (ret < 0) {
188 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_read\n");
189 goto done;
190 }
191
192 /* set the address, index & direction (read from PHY) */
193 phy_id &= dev->mii.phy_id_mask;
194 idx &= dev->mii.reg_num_mask;
195 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
196 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
197 | MII_ACCESS_READ | MII_ACCESS_BUSY;
198 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
199 if (ret < 0) {
200 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
201 goto done;
202 }
203
204 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
205 if (ret < 0) {
206 netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
207 goto done;
208 }
209
210 ret = __smsc75xx_read_reg(dev, MII_DATA, &val, in_pm);
211 if (ret < 0) {
212 netdev_warn(dev->net, "Error reading MII_DATA\n");
213 goto done;
214 }
215
216 ret = (u16)(val & 0xFFFF);
217
218 done:
219 mutex_unlock(&dev->phy_mutex);
220 return ret;
221 }
222
223 static void __smsc75xx_mdio_write(struct net_device *netdev, int phy_id,
224 int idx, int regval, int in_pm)
225 {
226 struct usbnet *dev = netdev_priv(netdev);
227 u32 val, addr;
228 int ret;
229
230 mutex_lock(&dev->phy_mutex);
231
232 /* confirm MII not busy */
233 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
234 if (ret < 0) {
235 netdev_warn(dev->net, "MII is busy in smsc75xx_mdio_write\n");
236 goto done;
237 }
238
239 val = regval;
240 ret = __smsc75xx_write_reg(dev, MII_DATA, val, in_pm);
241 if (ret < 0) {
242 netdev_warn(dev->net, "Error writing MII_DATA\n");
243 goto done;
244 }
245
246 /* set the address, index & direction (write to PHY) */
247 phy_id &= dev->mii.phy_id_mask;
248 idx &= dev->mii.reg_num_mask;
249 addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR)
250 | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR)
251 | MII_ACCESS_WRITE | MII_ACCESS_BUSY;
252 ret = __smsc75xx_write_reg(dev, MII_ACCESS, addr, in_pm);
253 if (ret < 0) {
254 netdev_warn(dev->net, "Error writing MII_ACCESS\n");
255 goto done;
256 }
257
258 ret = __smsc75xx_phy_wait_not_busy(dev, in_pm);
259 if (ret < 0) {
260 netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
261 goto done;
262 }
263
264 done:
265 mutex_unlock(&dev->phy_mutex);
266 }
267
268 static int smsc75xx_mdio_read_nopm(struct net_device *netdev, int phy_id,
269 int idx)
270 {
271 return __smsc75xx_mdio_read(netdev, phy_id, idx, 1);
272 }
273
274 static void smsc75xx_mdio_write_nopm(struct net_device *netdev, int phy_id,
275 int idx, int regval)
276 {
277 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 1);
278 }
279
280 static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx)
281 {
282 return __smsc75xx_mdio_read(netdev, phy_id, idx, 0);
283 }
284
285 static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx,
286 int regval)
287 {
288 __smsc75xx_mdio_write(netdev, phy_id, idx, regval, 0);
289 }
290
291 static int smsc75xx_wait_eeprom(struct usbnet *dev)
292 {
293 unsigned long start_time = jiffies;
294 u32 val;
295 int ret;
296
297 do {
298 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
299 if (ret < 0) {
300 netdev_warn(dev->net, "Error reading E2P_CMD\n");
301 return ret;
302 }
303
304 if (!(val & E2P_CMD_BUSY) || (val & E2P_CMD_TIMEOUT))
305 break;
306 udelay(40);
307 } while (!time_after(jiffies, start_time + HZ));
308
309 if (val & (E2P_CMD_TIMEOUT | E2P_CMD_BUSY)) {
310 netdev_warn(dev->net, "EEPROM read operation timeout\n");
311 return -EIO;
312 }
313
314 return 0;
315 }
316
317 static int smsc75xx_eeprom_confirm_not_busy(struct usbnet *dev)
318 {
319 unsigned long start_time = jiffies;
320 u32 val;
321 int ret;
322
323 do {
324 ret = smsc75xx_read_reg(dev, E2P_CMD, &val);
325 if (ret < 0) {
326 netdev_warn(dev->net, "Error reading E2P_CMD\n");
327 return ret;
328 }
329
330 if (!(val & E2P_CMD_BUSY))
331 return 0;
332
333 udelay(40);
334 } while (!time_after(jiffies, start_time + HZ));
335
336 netdev_warn(dev->net, "EEPROM is busy\n");
337 return -EIO;
338 }
339
340 static int smsc75xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
341 u8 *data)
342 {
343 u32 val;
344 int i, ret;
345
346 BUG_ON(!dev);
347 BUG_ON(!data);
348
349 ret = smsc75xx_eeprom_confirm_not_busy(dev);
350 if (ret)
351 return ret;
352
353 for (i = 0; i < length; i++) {
354 val = E2P_CMD_BUSY | E2P_CMD_READ | (offset & E2P_CMD_ADDR);
355 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
356 if (ret < 0) {
357 netdev_warn(dev->net, "Error writing E2P_CMD\n");
358 return ret;
359 }
360
361 ret = smsc75xx_wait_eeprom(dev);
362 if (ret < 0)
363 return ret;
364
365 ret = smsc75xx_read_reg(dev, E2P_DATA, &val);
366 if (ret < 0) {
367 netdev_warn(dev->net, "Error reading E2P_DATA\n");
368 return ret;
369 }
370
371 data[i] = val & 0xFF;
372 offset++;
373 }
374
375 return 0;
376 }
377
378 static int smsc75xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
379 u8 *data)
380 {
381 u32 val;
382 int i, ret;
383
384 BUG_ON(!dev);
385 BUG_ON(!data);
386
387 ret = smsc75xx_eeprom_confirm_not_busy(dev);
388 if (ret)
389 return ret;
390
391 /* Issue write/erase enable command */
392 val = E2P_CMD_BUSY | E2P_CMD_EWEN;
393 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
394 if (ret < 0) {
395 netdev_warn(dev->net, "Error writing E2P_CMD\n");
396 return ret;
397 }
398
399 ret = smsc75xx_wait_eeprom(dev);
400 if (ret < 0)
401 return ret;
402
403 for (i = 0; i < length; i++) {
404
405 /* Fill data register */
406 val = data[i];
407 ret = smsc75xx_write_reg(dev, E2P_DATA, val);
408 if (ret < 0) {
409 netdev_warn(dev->net, "Error writing E2P_DATA\n");
410 return ret;
411 }
412
413 /* Send "write" command */
414 val = E2P_CMD_BUSY | E2P_CMD_WRITE | (offset & E2P_CMD_ADDR);
415 ret = smsc75xx_write_reg(dev, E2P_CMD, val);
416 if (ret < 0) {
417 netdev_warn(dev->net, "Error writing E2P_CMD\n");
418 return ret;
419 }
420
421 ret = smsc75xx_wait_eeprom(dev);
422 if (ret < 0)
423 return ret;
424
425 offset++;
426 }
427
428 return 0;
429 }
430
431 static int smsc75xx_dataport_wait_not_busy(struct usbnet *dev)
432 {
433 int i, ret;
434
435 for (i = 0; i < 100; i++) {
436 u32 dp_sel;
437 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
438 if (ret < 0) {
439 netdev_warn(dev->net, "Error reading DP_SEL\n");
440 return ret;
441 }
442
443 if (dp_sel & DP_SEL_DPRDY)
444 return 0;
445
446 udelay(40);
447 }
448
449 netdev_warn(dev->net, "smsc75xx_dataport_wait_not_busy timed out\n");
450
451 return -EIO;
452 }
453
454 static int smsc75xx_dataport_write(struct usbnet *dev, u32 ram_select, u32 addr,
455 u32 length, u32 *buf)
456 {
457 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
458 u32 dp_sel;
459 int i, ret;
460
461 mutex_lock(&pdata->dataport_mutex);
462
463 ret = smsc75xx_dataport_wait_not_busy(dev);
464 if (ret < 0) {
465 netdev_warn(dev->net, "smsc75xx_dataport_write busy on entry\n");
466 goto done;
467 }
468
469 ret = smsc75xx_read_reg(dev, DP_SEL, &dp_sel);
470 if (ret < 0) {
471 netdev_warn(dev->net, "Error reading DP_SEL\n");
472 goto done;
473 }
474
475 dp_sel &= ~DP_SEL_RSEL;
476 dp_sel |= ram_select;
477 ret = smsc75xx_write_reg(dev, DP_SEL, dp_sel);
478 if (ret < 0) {
479 netdev_warn(dev->net, "Error writing DP_SEL\n");
480 goto done;
481 }
482
483 for (i = 0; i < length; i++) {
484 ret = smsc75xx_write_reg(dev, DP_ADDR, addr + i);
485 if (ret < 0) {
486 netdev_warn(dev->net, "Error writing DP_ADDR\n");
487 goto done;
488 }
489
490 ret = smsc75xx_write_reg(dev, DP_DATA, buf[i]);
491 if (ret < 0) {
492 netdev_warn(dev->net, "Error writing DP_DATA\n");
493 goto done;
494 }
495
496 ret = smsc75xx_write_reg(dev, DP_CMD, DP_CMD_WRITE);
497 if (ret < 0) {
498 netdev_warn(dev->net, "Error writing DP_CMD\n");
499 goto done;
500 }
501
502 ret = smsc75xx_dataport_wait_not_busy(dev);
503 if (ret < 0) {
504 netdev_warn(dev->net, "smsc75xx_dataport_write timeout\n");
505 goto done;
506 }
507 }
508
509 done:
510 mutex_unlock(&pdata->dataport_mutex);
511 return ret;
512 }
513
514 /* returns hash bit number for given MAC address */
515 static u32 smsc75xx_hash(char addr[ETH_ALEN])
516 {
517 return (ether_crc(ETH_ALEN, addr) >> 23) & 0x1ff;
518 }
519
520 static void smsc75xx_deferred_multicast_write(struct work_struct *param)
521 {
522 struct smsc75xx_priv *pdata =
523 container_of(param, struct smsc75xx_priv, set_multicast);
524 struct usbnet *dev = pdata->dev;
525 int ret;
526
527 netif_dbg(dev, drv, dev->net, "deferred multicast write 0x%08x\n",
528 pdata->rfe_ctl);
529
530 smsc75xx_dataport_write(dev, DP_SEL_VHF, DP_SEL_VHF_VLAN_LEN,
531 DP_SEL_VHF_HASH_LEN, pdata->multicast_hash_table);
532
533 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
534 if (ret < 0)
535 netdev_warn(dev->net, "Error writing RFE_CRL\n");
536 }
537
538 static void smsc75xx_set_multicast(struct net_device *netdev)
539 {
540 struct usbnet *dev = netdev_priv(netdev);
541 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
542 unsigned long flags;
543 int i;
544
545 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
546
547 pdata->rfe_ctl &=
548 ~(RFE_CTL_AU | RFE_CTL_AM | RFE_CTL_DPF | RFE_CTL_MHF);
549 pdata->rfe_ctl |= RFE_CTL_AB;
550
551 for (i = 0; i < DP_SEL_VHF_HASH_LEN; i++)
552 pdata->multicast_hash_table[i] = 0;
553
554 if (dev->net->flags & IFF_PROMISC) {
555 netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
556 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_AU;
557 } else if (dev->net->flags & IFF_ALLMULTI) {
558 netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
559 pdata->rfe_ctl |= RFE_CTL_AM | RFE_CTL_DPF;
560 } else if (!netdev_mc_empty(dev->net)) {
561 struct netdev_hw_addr *ha;
562
563 netif_dbg(dev, drv, dev->net, "receive multicast hash filter\n");
564
565 pdata->rfe_ctl |= RFE_CTL_MHF | RFE_CTL_DPF;
566
567 netdev_for_each_mc_addr(ha, netdev) {
568 u32 bitnum = smsc75xx_hash(ha->addr);
569 pdata->multicast_hash_table[bitnum / 32] |=
570 (1 << (bitnum % 32));
571 }
572 } else {
573 netif_dbg(dev, drv, dev->net, "receive own packets only\n");
574 pdata->rfe_ctl |= RFE_CTL_DPF;
575 }
576
577 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
578
579 /* defer register writes to a sleepable context */
580 schedule_work(&pdata->set_multicast);
581 }
582
583 static int smsc75xx_update_flowcontrol(struct usbnet *dev, u8 duplex,
584 u16 lcladv, u16 rmtadv)
585 {
586 u32 flow = 0, fct_flow = 0;
587 int ret;
588
589 if (duplex == DUPLEX_FULL) {
590 u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
591
592 if (cap & FLOW_CTRL_TX) {
593 flow = (FLOW_TX_FCEN | 0xFFFF);
594 /* set fct_flow thresholds to 20% and 80% */
595 fct_flow = (8 << 8) | 32;
596 }
597
598 if (cap & FLOW_CTRL_RX)
599 flow |= FLOW_RX_FCEN;
600
601 netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
602 (cap & FLOW_CTRL_RX ? "enabled" : "disabled"),
603 (cap & FLOW_CTRL_TX ? "enabled" : "disabled"));
604 } else {
605 netif_dbg(dev, link, dev->net, "half duplex\n");
606 }
607
608 ret = smsc75xx_write_reg(dev, FLOW, flow);
609 if (ret < 0) {
610 netdev_warn(dev->net, "Error writing FLOW\n");
611 return ret;
612 }
613
614 ret = smsc75xx_write_reg(dev, FCT_FLOW, fct_flow);
615 if (ret < 0) {
616 netdev_warn(dev->net, "Error writing FCT_FLOW\n");
617 return ret;
618 }
619
620 return 0;
621 }
622
623 static int smsc75xx_link_reset(struct usbnet *dev)
624 {
625 struct mii_if_info *mii = &dev->mii;
626 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
627 u16 lcladv, rmtadv;
628 int ret;
629
630 /* write to clear phy interrupt status */
631 smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC,
632 PHY_INT_SRC_CLEAR_ALL);
633
634 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
635 if (ret < 0) {
636 netdev_warn(dev->net, "Error writing INT_STS\n");
637 return ret;
638 }
639
640 mii_check_media(mii, 1, 1);
641 mii_ethtool_gset(&dev->mii, &ecmd);
642 lcladv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_ADVERTISE);
643 rmtadv = smsc75xx_mdio_read(dev->net, mii->phy_id, MII_LPA);
644
645 netif_dbg(dev, link, dev->net, "speed: %u duplex: %d lcladv: %04x rmtadv: %04x\n",
646 ethtool_cmd_speed(&ecmd), ecmd.duplex, lcladv, rmtadv);
647
648 return smsc75xx_update_flowcontrol(dev, ecmd.duplex, lcladv, rmtadv);
649 }
650
651 static void smsc75xx_status(struct usbnet *dev, struct urb *urb)
652 {
653 u32 intdata;
654
655 if (urb->actual_length != 4) {
656 netdev_warn(dev->net, "unexpected urb length %d\n",
657 urb->actual_length);
658 return;
659 }
660
661 intdata = get_unaligned_le32(urb->transfer_buffer);
662
663 netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
664
665 if (intdata & INT_ENP_PHY_INT)
666 usbnet_defer_kevent(dev, EVENT_LINK_RESET);
667 else
668 netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
669 intdata);
670 }
671
672 static int smsc75xx_ethtool_get_eeprom_len(struct net_device *net)
673 {
674 return MAX_EEPROM_SIZE;
675 }
676
677 static int smsc75xx_ethtool_get_eeprom(struct net_device *netdev,
678 struct ethtool_eeprom *ee, u8 *data)
679 {
680 struct usbnet *dev = netdev_priv(netdev);
681
682 ee->magic = LAN75XX_EEPROM_MAGIC;
683
684 return smsc75xx_read_eeprom(dev, ee->offset, ee->len, data);
685 }
686
687 static int smsc75xx_ethtool_set_eeprom(struct net_device *netdev,
688 struct ethtool_eeprom *ee, u8 *data)
689 {
690 struct usbnet *dev = netdev_priv(netdev);
691
692 if (ee->magic != LAN75XX_EEPROM_MAGIC) {
693 netdev_warn(dev->net, "EEPROM: magic value mismatch: 0x%x\n",
694 ee->magic);
695 return -EINVAL;
696 }
697
698 return smsc75xx_write_eeprom(dev, ee->offset, ee->len, data);
699 }
700
701 static void smsc75xx_ethtool_get_wol(struct net_device *net,
702 struct ethtool_wolinfo *wolinfo)
703 {
704 struct usbnet *dev = netdev_priv(net);
705 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
706
707 wolinfo->supported = SUPPORTED_WAKE;
708 wolinfo->wolopts = pdata->wolopts;
709 }
710
711 static int smsc75xx_ethtool_set_wol(struct net_device *net,
712 struct ethtool_wolinfo *wolinfo)
713 {
714 struct usbnet *dev = netdev_priv(net);
715 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
716 int ret;
717
718 if (wolinfo->wolopts & ~SUPPORTED_WAKE)
719 return -EINVAL;
720
721 pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
722
723 ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
724 if (ret < 0)
725 netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
726
727 return ret;
728 }
729
730 static const struct ethtool_ops smsc75xx_ethtool_ops = {
731 .get_link = usbnet_get_link,
732 .nway_reset = usbnet_nway_reset,
733 .get_drvinfo = usbnet_get_drvinfo,
734 .get_msglevel = usbnet_get_msglevel,
735 .set_msglevel = usbnet_set_msglevel,
736 .get_eeprom_len = smsc75xx_ethtool_get_eeprom_len,
737 .get_eeprom = smsc75xx_ethtool_get_eeprom,
738 .set_eeprom = smsc75xx_ethtool_set_eeprom,
739 .get_wol = smsc75xx_ethtool_get_wol,
740 .set_wol = smsc75xx_ethtool_set_wol,
741 .get_link_ksettings = usbnet_get_link_ksettings_mii,
742 .set_link_ksettings = usbnet_set_link_ksettings_mii,
743 };
744
745 static int smsc75xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
746 {
747 struct usbnet *dev = netdev_priv(netdev);
748
749 if (!netif_running(netdev))
750 return -EINVAL;
751
752 return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
753 }
754
755 static void smsc75xx_init_mac_address(struct usbnet *dev)
756 {
757 u8 addr[ETH_ALEN];
758
759 /* maybe the boot loader passed the MAC address in devicetree */
760 if (!platform_get_ethdev_address(&dev->udev->dev, dev->net)) {
761 if (is_valid_ether_addr(dev->net->dev_addr)) {
762 /* device tree values are valid so use them */
763 netif_dbg(dev, ifup, dev->net, "MAC address read from the device tree\n");
764 return;
765 }
766 }
767
768 /* try reading mac address from EEPROM */
769 if (smsc75xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, addr) == 0) {
770 eth_hw_addr_set(dev->net, addr);
771 if (is_valid_ether_addr(dev->net->dev_addr)) {
772 /* eeprom values are valid so use them */
773 netif_dbg(dev, ifup, dev->net,
774 "MAC address read from EEPROM\n");
775 return;
776 }
777 }
778
779 /* no useful static MAC address found. generate a random one */
780 eth_hw_addr_random(dev->net);
781 netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
782 }
783
784 static int smsc75xx_set_mac_address(struct usbnet *dev)
785 {
786 u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
787 dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
788 u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
789
790 int ret = smsc75xx_write_reg(dev, RX_ADDRH, addr_hi);
791 if (ret < 0) {
792 netdev_warn(dev->net, "Failed to write RX_ADDRH: %d\n", ret);
793 return ret;
794 }
795
796 ret = smsc75xx_write_reg(dev, RX_ADDRL, addr_lo);
797 if (ret < 0) {
798 netdev_warn(dev->net, "Failed to write RX_ADDRL: %d\n", ret);
799 return ret;
800 }
801
802 addr_hi |= ADDR_FILTX_FB_VALID;
803 ret = smsc75xx_write_reg(dev, ADDR_FILTX, addr_hi);
804 if (ret < 0) {
805 netdev_warn(dev->net, "Failed to write ADDR_FILTX: %d\n", ret);
806 return ret;
807 }
808
809 ret = smsc75xx_write_reg(dev, ADDR_FILTX + 4, addr_lo);
810 if (ret < 0)
811 netdev_warn(dev->net, "Failed to write ADDR_FILTX+4: %d\n", ret);
812
813 return ret;
814 }
815
816 static int smsc75xx_phy_initialize(struct usbnet *dev)
817 {
818 int bmcr, ret, timeout = 0;
819
820 /* Initialize MII structure */
821 dev->mii.dev = dev->net;
822 dev->mii.mdio_read = smsc75xx_mdio_read;
823 dev->mii.mdio_write = smsc75xx_mdio_write;
824 dev->mii.phy_id_mask = 0x1f;
825 dev->mii.reg_num_mask = 0x1f;
826 dev->mii.supports_gmii = 1;
827 dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID;
828
829 /* reset phy and wait for reset to complete */
830 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
831
832 do {
833 msleep(10);
834 bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR);
835 if (bmcr < 0) {
836 netdev_warn(dev->net, "Error reading MII_BMCR\n");
837 return bmcr;
838 }
839 timeout++;
840 } while ((bmcr & BMCR_RESET) && (timeout < 100));
841
842 if (timeout >= 100) {
843 netdev_warn(dev->net, "timeout on PHY Reset\n");
844 return -EIO;
845 }
846
847 /* phy workaround for gig link */
848 smsc75xx_phy_gig_workaround(dev);
849
850 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
851 ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
852 ADVERTISE_PAUSE_ASYM);
853 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
854 ADVERTISE_1000FULL);
855
856 /* read and write to clear phy interrupt status */
857 ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
858 if (ret < 0) {
859 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
860 return ret;
861 }
862
863 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff);
864
865 smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
866 PHY_INT_MASK_DEFAULT);
867 mii_nway_restart(&dev->mii);
868
869 netif_dbg(dev, ifup, dev->net, "phy initialised successfully\n");
870 return 0;
871 }
872
873 static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size)
874 {
875 int ret = 0;
876 u32 buf;
877 bool rxenabled;
878
879 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
880 if (ret < 0) {
881 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
882 return ret;
883 }
884
885 rxenabled = ((buf & MAC_RX_RXEN) != 0);
886
887 if (rxenabled) {
888 buf &= ~MAC_RX_RXEN;
889 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
890 if (ret < 0) {
891 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
892 return ret;
893 }
894 }
895
896 /* add 4 to size for FCS */
897 buf &= ~MAC_RX_MAX_SIZE;
898 buf |= (((size + 4) << MAC_RX_MAX_SIZE_SHIFT) & MAC_RX_MAX_SIZE);
899
900 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
901 if (ret < 0) {
902 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
903 return ret;
904 }
905
906 if (rxenabled) {
907 buf |= MAC_RX_RXEN;
908 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
909 if (ret < 0) {
910 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
911 return ret;
912 }
913 }
914
915 return 0;
916 }
917
918 static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu)
919 {
920 struct usbnet *dev = netdev_priv(netdev);
921 int ret;
922
923 ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN);
924 if (ret < 0) {
925 netdev_warn(dev->net, "Failed to set mac rx frame length\n");
926 return ret;
927 }
928
929 return usbnet_change_mtu(netdev, new_mtu);
930 }
931
932 /* Enable or disable Rx checksum offload engine */
933 static int smsc75xx_set_features(struct net_device *netdev,
934 netdev_features_t features)
935 {
936 struct usbnet *dev = netdev_priv(netdev);
937 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
938 unsigned long flags;
939 int ret;
940
941 spin_lock_irqsave(&pdata->rfe_ctl_lock, flags);
942
943 if (features & NETIF_F_RXCSUM)
944 pdata->rfe_ctl |= RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM;
945 else
946 pdata->rfe_ctl &= ~(RFE_CTL_TCPUDP_CKM | RFE_CTL_IP_CKM);
947
948 spin_unlock_irqrestore(&pdata->rfe_ctl_lock, flags);
949 /* it's racing here! */
950
951 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
952 if (ret < 0) {
953 netdev_warn(dev->net, "Error writing RFE_CTL\n");
954 return ret;
955 }
956 return 0;
957 }
958
959 static int smsc75xx_wait_ready(struct usbnet *dev, int in_pm)
960 {
961 int timeout = 0;
962
963 do {
964 u32 buf;
965 int ret;
966
967 ret = __smsc75xx_read_reg(dev, PMT_CTL, &buf, in_pm);
968
969 if (ret < 0) {
970 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
971 return ret;
972 }
973
974 if (buf & PMT_CTL_DEV_RDY)
975 return 0;
976
977 msleep(10);
978 timeout++;
979 } while (timeout < 100);
980
981 netdev_warn(dev->net, "timeout waiting for device ready\n");
982 return -EIO;
983 }
984
985 static int smsc75xx_phy_gig_workaround(struct usbnet *dev)
986 {
987 struct mii_if_info *mii = &dev->mii;
988 int ret = 0, timeout = 0;
989 u32 buf, link_up = 0;
990
991 /* Set the phy in Gig loopback */
992 smsc75xx_mdio_write(dev->net, mii->phy_id, MII_BMCR, 0x4040);
993
994 /* Wait for the link up */
995 do {
996 link_up = smsc75xx_link_ok_nopm(dev);
997 usleep_range(10000, 20000);
998 timeout++;
999 } while ((!link_up) && (timeout < 1000));
1000
1001 if (timeout >= 1000) {
1002 netdev_warn(dev->net, "Timeout waiting for PHY link up\n");
1003 return -EIO;
1004 }
1005
1006 /* phy reset */
1007 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1008 if (ret < 0) {
1009 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1010 return ret;
1011 }
1012
1013 buf |= PMT_CTL_PHY_RST;
1014
1015 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1016 if (ret < 0) {
1017 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1018 return ret;
1019 }
1020
1021 timeout = 0;
1022 do {
1023 usleep_range(10000, 20000);
1024 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1025 if (ret < 0) {
1026 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n",
1027 ret);
1028 return ret;
1029 }
1030 timeout++;
1031 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1032
1033 if (timeout >= 100) {
1034 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1035 return -EIO;
1036 }
1037
1038 return 0;
1039 }
1040
1041 static int smsc75xx_reset(struct usbnet *dev)
1042 {
1043 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1044 u32 buf;
1045 int ret = 0, timeout;
1046
1047 netif_dbg(dev, ifup, dev->net, "entering smsc75xx_reset\n");
1048
1049 ret = smsc75xx_wait_ready(dev, 0);
1050 if (ret < 0) {
1051 netdev_warn(dev->net, "device not ready in smsc75xx_reset\n");
1052 return ret;
1053 }
1054
1055 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1056 if (ret < 0) {
1057 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1058 return ret;
1059 }
1060
1061 buf |= HW_CFG_LRST;
1062
1063 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1064 if (ret < 0) {
1065 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1066 return ret;
1067 }
1068
1069 timeout = 0;
1070 do {
1071 msleep(10);
1072 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1073 if (ret < 0) {
1074 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1075 return ret;
1076 }
1077 timeout++;
1078 } while ((buf & HW_CFG_LRST) && (timeout < 100));
1079
1080 if (timeout >= 100) {
1081 netdev_warn(dev->net, "timeout on completion of Lite Reset\n");
1082 return -EIO;
1083 }
1084
1085 netif_dbg(dev, ifup, dev->net, "Lite reset complete, resetting PHY\n");
1086
1087 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1088 if (ret < 0) {
1089 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1090 return ret;
1091 }
1092
1093 buf |= PMT_CTL_PHY_RST;
1094
1095 ret = smsc75xx_write_reg(dev, PMT_CTL, buf);
1096 if (ret < 0) {
1097 netdev_warn(dev->net, "Failed to write PMT_CTL: %d\n", ret);
1098 return ret;
1099 }
1100
1101 timeout = 0;
1102 do {
1103 msleep(10);
1104 ret = smsc75xx_read_reg(dev, PMT_CTL, &buf);
1105 if (ret < 0) {
1106 netdev_warn(dev->net, "Failed to read PMT_CTL: %d\n", ret);
1107 return ret;
1108 }
1109 timeout++;
1110 } while ((buf & PMT_CTL_PHY_RST) && (timeout < 100));
1111
1112 if (timeout >= 100) {
1113 netdev_warn(dev->net, "timeout waiting for PHY Reset\n");
1114 return -EIO;
1115 }
1116
1117 netif_dbg(dev, ifup, dev->net, "PHY reset complete\n");
1118
1119 ret = smsc75xx_set_mac_address(dev);
1120 if (ret < 0) {
1121 netdev_warn(dev->net, "Failed to set mac address\n");
1122 return ret;
1123 }
1124
1125 netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
1126 dev->net->dev_addr);
1127
1128 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1129 if (ret < 0) {
1130 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1131 return ret;
1132 }
1133
1134 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
1135 buf);
1136
1137 buf |= HW_CFG_BIR;
1138
1139 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1140 if (ret < 0) {
1141 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1142 return ret;
1143 }
1144
1145 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1146 if (ret < 0) {
1147 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1148 return ret;
1149 }
1150
1151 netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG after writing HW_CFG_BIR: 0x%08x\n",
1152 buf);
1153
1154 if (!turbo_mode) {
1155 buf = 0;
1156 dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
1157 } else if (dev->udev->speed == USB_SPEED_HIGH) {
1158 buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
1159 dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
1160 } else {
1161 buf = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
1162 dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
1163 }
1164
1165 netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
1166 (ulong)dev->rx_urb_size);
1167
1168 ret = smsc75xx_write_reg(dev, BURST_CAP, buf);
1169 if (ret < 0) {
1170 netdev_warn(dev->net, "Failed to write BURST_CAP: %d\n", ret);
1171 return ret;
1172 }
1173
1174 ret = smsc75xx_read_reg(dev, BURST_CAP, &buf);
1175 if (ret < 0) {
1176 netdev_warn(dev->net, "Failed to read BURST_CAP: %d\n", ret);
1177 return ret;
1178 }
1179
1180 netif_dbg(dev, ifup, dev->net,
1181 "Read Value from BURST_CAP after writing: 0x%08x\n", buf);
1182
1183 ret = smsc75xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
1184 if (ret < 0) {
1185 netdev_warn(dev->net, "Failed to write BULK_IN_DLY: %d\n", ret);
1186 return ret;
1187 }
1188
1189 ret = smsc75xx_read_reg(dev, BULK_IN_DLY, &buf);
1190 if (ret < 0) {
1191 netdev_warn(dev->net, "Failed to read BULK_IN_DLY: %d\n", ret);
1192 return ret;
1193 }
1194
1195 netif_dbg(dev, ifup, dev->net,
1196 "Read Value from BULK_IN_DLY after writing: 0x%08x\n", buf);
1197
1198 if (turbo_mode) {
1199 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1200 if (ret < 0) {
1201 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1202 return ret;
1203 }
1204
1205 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1206
1207 buf |= (HW_CFG_MEF | HW_CFG_BCE);
1208
1209 ret = smsc75xx_write_reg(dev, HW_CFG, buf);
1210 if (ret < 0) {
1211 netdev_warn(dev->net, "Failed to write HW_CFG: %d\n", ret);
1212 return ret;
1213 }
1214
1215 ret = smsc75xx_read_reg(dev, HW_CFG, &buf);
1216 if (ret < 0) {
1217 netdev_warn(dev->net, "Failed to read HW_CFG: %d\n", ret);
1218 return ret;
1219 }
1220
1221 netif_dbg(dev, ifup, dev->net, "HW_CFG: 0x%08x\n", buf);
1222 }
1223
1224 /* set FIFO sizes */
1225 buf = (MAX_RX_FIFO_SIZE - 512) / 512;
1226 ret = smsc75xx_write_reg(dev, FCT_RX_FIFO_END, buf);
1227 if (ret < 0) {
1228 netdev_warn(dev->net, "Failed to write FCT_RX_FIFO_END: %d\n", ret);
1229 return ret;
1230 }
1231
1232 netif_dbg(dev, ifup, dev->net, "FCT_RX_FIFO_END set to 0x%08x\n", buf);
1233
1234 buf = (MAX_TX_FIFO_SIZE - 512) / 512;
1235 ret = smsc75xx_write_reg(dev, FCT_TX_FIFO_END, buf);
1236 if (ret < 0) {
1237 netdev_warn(dev->net, "Failed to write FCT_TX_FIFO_END: %d\n", ret);
1238 return ret;
1239 }
1240
1241 netif_dbg(dev, ifup, dev->net, "FCT_TX_FIFO_END set to 0x%08x\n", buf);
1242
1243 ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
1244 if (ret < 0) {
1245 netdev_warn(dev->net, "Failed to write INT_STS: %d\n", ret);
1246 return ret;
1247 }
1248
1249 ret = smsc75xx_read_reg(dev, ID_REV, &buf);
1250 if (ret < 0) {
1251 netdev_warn(dev->net, "Failed to read ID_REV: %d\n", ret);
1252 return ret;
1253 }
1254
1255 netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", buf);
1256
1257 ret = smsc75xx_read_reg(dev, E2P_CMD, &buf);
1258 if (ret < 0) {
1259 netdev_warn(dev->net, "Failed to read E2P_CMD: %d\n", ret);
1260 return ret;
1261 }
1262
1263 /* only set default GPIO/LED settings if no EEPROM is detected */
1264 if (!(buf & E2P_CMD_LOADED)) {
1265 ret = smsc75xx_read_reg(dev, LED_GPIO_CFG, &buf);
1266 if (ret < 0) {
1267 netdev_warn(dev->net, "Failed to read LED_GPIO_CFG: %d\n", ret);
1268 return ret;
1269 }
1270
1271 buf &= ~(LED_GPIO_CFG_LED2_FUN_SEL | LED_GPIO_CFG_LED10_FUN_SEL);
1272 buf |= LED_GPIO_CFG_LEDGPIO_EN | LED_GPIO_CFG_LED2_FUN_SEL;
1273
1274 ret = smsc75xx_write_reg(dev, LED_GPIO_CFG, buf);
1275 if (ret < 0) {
1276 netdev_warn(dev->net, "Failed to write LED_GPIO_CFG: %d\n", ret);
1277 return ret;
1278 }
1279 }
1280
1281 ret = smsc75xx_write_reg(dev, FLOW, 0);
1282 if (ret < 0) {
1283 netdev_warn(dev->net, "Failed to write FLOW: %d\n", ret);
1284 return ret;
1285 }
1286
1287 ret = smsc75xx_write_reg(dev, FCT_FLOW, 0);
1288 if (ret < 0) {
1289 netdev_warn(dev->net, "Failed to write FCT_FLOW: %d\n", ret);
1290 return ret;
1291 }
1292
1293 /* Don't need rfe_ctl_lock during initialisation */
1294 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1295 if (ret < 0) {
1296 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1297 return ret;
1298 }
1299
1300 pdata->rfe_ctl |= RFE_CTL_AB | RFE_CTL_DPF;
1301
1302 ret = smsc75xx_write_reg(dev, RFE_CTL, pdata->rfe_ctl);
1303 if (ret < 0) {
1304 netdev_warn(dev->net, "Failed to write RFE_CTL: %d\n", ret);
1305 return ret;
1306 }
1307
1308 ret = smsc75xx_read_reg(dev, RFE_CTL, &pdata->rfe_ctl);
1309 if (ret < 0) {
1310 netdev_warn(dev->net, "Failed to read RFE_CTL: %d\n", ret);
1311 return ret;
1312 }
1313
1314 netif_dbg(dev, ifup, dev->net, "RFE_CTL set to 0x%08x\n",
1315 pdata->rfe_ctl);
1316
1317 /* Enable or disable checksum offload engines */
1318 smsc75xx_set_features(dev->net, dev->net->features);
1319
1320 smsc75xx_set_multicast(dev->net);
1321
1322 ret = smsc75xx_phy_initialize(dev);
1323 if (ret < 0) {
1324 netdev_warn(dev->net, "Failed to initialize PHY: %d\n", ret);
1325 return ret;
1326 }
1327
1328 ret = smsc75xx_read_reg(dev, INT_EP_CTL, &buf);
1329 if (ret < 0) {
1330 netdev_warn(dev->net, "Failed to read INT_EP_CTL: %d\n", ret);
1331 return ret;
1332 }
1333
1334 /* enable PHY interrupts */
1335 buf |= INT_ENP_PHY_INT;
1336
1337 ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);
1338 if (ret < 0) {
1339 netdev_warn(dev->net, "Failed to write INT_EP_CTL: %d\n", ret);
1340 return ret;
1341 }
1342
1343 /* allow mac to detect speed and duplex from phy */
1344 ret = smsc75xx_read_reg(dev, MAC_CR, &buf);
1345 if (ret < 0) {
1346 netdev_warn(dev->net, "Failed to read MAC_CR: %d\n", ret);
1347 return ret;
1348 }
1349
1350 buf |= (MAC_CR_ADD | MAC_CR_ASD);
1351 ret = smsc75xx_write_reg(dev, MAC_CR, buf);
1352 if (ret < 0) {
1353 netdev_warn(dev->net, "Failed to write MAC_CR: %d\n", ret);
1354 return ret;
1355 }
1356
1357 ret = smsc75xx_read_reg(dev, MAC_TX, &buf);
1358 if (ret < 0) {
1359 netdev_warn(dev->net, "Failed to read MAC_TX: %d\n", ret);
1360 return ret;
1361 }
1362
1363 buf |= MAC_TX_TXEN;
1364
1365 ret = smsc75xx_write_reg(dev, MAC_TX, buf);
1366 if (ret < 0) {
1367 netdev_warn(dev->net, "Failed to write MAC_TX: %d\n", ret);
1368 return ret;
1369 }
1370
1371 netif_dbg(dev, ifup, dev->net, "MAC_TX set to 0x%08x\n", buf);
1372
1373 ret = smsc75xx_read_reg(dev, FCT_TX_CTL, &buf);
1374 if (ret < 0) {
1375 netdev_warn(dev->net, "Failed to read FCT_TX_CTL: %d\n", ret);
1376 return ret;
1377 }
1378
1379 buf |= FCT_TX_CTL_EN;
1380
1381 ret = smsc75xx_write_reg(dev, FCT_TX_CTL, buf);
1382 if (ret < 0) {
1383 netdev_warn(dev->net, "Failed to write FCT_TX_CTL: %d\n", ret);
1384 return ret;
1385 }
1386
1387 netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf);
1388
1389 ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN);
1390 if (ret < 0) {
1391 netdev_warn(dev->net, "Failed to set max rx frame length\n");
1392 return ret;
1393 }
1394
1395 ret = smsc75xx_read_reg(dev, MAC_RX, &buf);
1396 if (ret < 0) {
1397 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
1398 return ret;
1399 }
1400
1401 buf |= MAC_RX_RXEN;
1402
1403 ret = smsc75xx_write_reg(dev, MAC_RX, buf);
1404 if (ret < 0) {
1405 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
1406 return ret;
1407 }
1408
1409 netif_dbg(dev, ifup, dev->net, "MAC_RX set to 0x%08x\n", buf);
1410
1411 ret = smsc75xx_read_reg(dev, FCT_RX_CTL, &buf);
1412 if (ret < 0) {
1413 netdev_warn(dev->net, "Failed to read FCT_RX_CTL: %d\n", ret);
1414 return ret;
1415 }
1416
1417 buf |= FCT_RX_CTL_EN;
1418
1419 ret = smsc75xx_write_reg(dev, FCT_RX_CTL, buf);
1420 if (ret < 0) {
1421 netdev_warn(dev->net, "Failed to write FCT_RX_CTL: %d\n", ret);
1422 return ret;
1423 }
1424
1425 netif_dbg(dev, ifup, dev->net, "FCT_RX_CTL set to 0x%08x\n", buf);
1426
1427 netif_dbg(dev, ifup, dev->net, "smsc75xx_reset, return 0\n");
1428 return 0;
1429 }
1430
1431 static const struct net_device_ops smsc75xx_netdev_ops = {
1432 .ndo_open = usbnet_open,
1433 .ndo_stop = usbnet_stop,
1434 .ndo_start_xmit = usbnet_start_xmit,
1435 .ndo_tx_timeout = usbnet_tx_timeout,
1436 .ndo_get_stats64 = dev_get_tstats64,
1437 .ndo_change_mtu = smsc75xx_change_mtu,
1438 .ndo_set_mac_address = eth_mac_addr,
1439 .ndo_validate_addr = eth_validate_addr,
1440 .ndo_eth_ioctl = smsc75xx_ioctl,
1441 .ndo_set_rx_mode = smsc75xx_set_multicast,
1442 .ndo_set_features = smsc75xx_set_features,
1443 };
1444
1445 static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf)
1446 {
1447 struct smsc75xx_priv *pdata = NULL;
1448 int ret;
1449
1450 printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
1451
1452 ret = usbnet_get_endpoints(dev, intf);
1453 if (ret < 0) {
1454 netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
1455 return ret;
1456 }
1457
1458 dev->data[0] = (unsigned long)kzalloc(sizeof(struct smsc75xx_priv),
1459 GFP_KERNEL);
1460
1461 pdata = (struct smsc75xx_priv *)(dev->data[0]);
1462 if (!pdata)
1463 return -ENOMEM;
1464
1465 pdata->dev = dev;
1466
1467 spin_lock_init(&pdata->rfe_ctl_lock);
1468 mutex_init(&pdata->dataport_mutex);
1469
1470 INIT_WORK(&pdata->set_multicast, smsc75xx_deferred_multicast_write);
1471
1472 if (DEFAULT_TX_CSUM_ENABLE)
1473 dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1474
1475 if (DEFAULT_RX_CSUM_ENABLE)
1476 dev->net->features |= NETIF_F_RXCSUM;
1477
1478 dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1479 NETIF_F_RXCSUM;
1480
1481 ret = smsc75xx_wait_ready(dev, 0);
1482 if (ret < 0) {
1483 netdev_warn(dev->net, "device not ready in smsc75xx_bind\n");
1484 goto free_pdata;
1485 }
1486
1487 smsc75xx_init_mac_address(dev);
1488
1489 /* Init all registers */
1490 ret = smsc75xx_reset(dev);
1491 if (ret < 0) {
1492 netdev_warn(dev->net, "smsc75xx_reset error %d\n", ret);
1493 goto cancel_work;
1494 }
1495
1496 dev->net->netdev_ops = &smsc75xx_netdev_ops;
1497 dev->net->ethtool_ops = &smsc75xx_ethtool_ops;
1498 dev->net->flags |= IFF_MULTICAST;
1499 dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD;
1500 dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
1501 dev->net->max_mtu = MAX_SINGLE_PACKET_SIZE;
1502 return 0;
1503
1504 cancel_work:
1505 cancel_work_sync(&pdata->set_multicast);
1506 free_pdata:
1507 kfree(pdata);
1508 dev->data[0] = 0;
1509 return ret;
1510 }
1511
1512 static void smsc75xx_unbind(struct usbnet *dev, struct usb_interface *intf)
1513 {
1514 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1515 if (pdata) {
1516 cancel_work_sync(&pdata->set_multicast);
1517 netif_dbg(dev, ifdown, dev->net, "free pdata\n");
1518 kfree(pdata);
1519 dev->data[0] = 0;
1520 }
1521 }
1522
1523 static u16 smsc_crc(const u8 *buffer, size_t len)
1524 {
1525 return bitrev16(crc16(0xFFFF, buffer, len));
1526 }
1527
1528 static int smsc75xx_write_wuff(struct usbnet *dev, int filter, u32 wuf_cfg,
1529 u32 wuf_mask1)
1530 {
1531 int cfg_base = WUF_CFGX + filter * 4;
1532 int mask_base = WUF_MASKX + filter * 16;
1533 int ret;
1534
1535 ret = smsc75xx_write_reg(dev, cfg_base, wuf_cfg);
1536 if (ret < 0) {
1537 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1538 return ret;
1539 }
1540
1541 ret = smsc75xx_write_reg(dev, mask_base, wuf_mask1);
1542 if (ret < 0) {
1543 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1544 return ret;
1545 }
1546
1547 ret = smsc75xx_write_reg(dev, mask_base + 4, 0);
1548 if (ret < 0) {
1549 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1550 return ret;
1551 }
1552
1553 ret = smsc75xx_write_reg(dev, mask_base + 8, 0);
1554 if (ret < 0) {
1555 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1556 return ret;
1557 }
1558
1559 ret = smsc75xx_write_reg(dev, mask_base + 12, 0);
1560 if (ret < 0) {
1561 netdev_warn(dev->net, "Error writing WUF_MASKX\n");
1562 return ret;
1563 }
1564
1565 return 0;
1566 }
1567
1568 static int smsc75xx_enter_suspend0(struct usbnet *dev)
1569 {
1570 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1571 u32 val;
1572 int ret;
1573
1574 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1575 if (ret < 0) {
1576 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1577 return ret;
1578 }
1579
1580 val &= (~(PMT_CTL_SUS_MODE | PMT_CTL_PHY_RST));
1581 val |= PMT_CTL_SUS_MODE_0 | PMT_CTL_WOL_EN | PMT_CTL_WUPS;
1582
1583 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1584 if (ret < 0) {
1585 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1586 return ret;
1587 }
1588
1589 pdata->suspend_flags |= SUSPEND_SUSPEND0;
1590
1591 return 0;
1592 }
1593
1594 static int smsc75xx_enter_suspend1(struct usbnet *dev)
1595 {
1596 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1597 u32 val;
1598 int ret;
1599
1600 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1601 if (ret < 0) {
1602 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1603 return ret;
1604 }
1605
1606 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1607 val |= PMT_CTL_SUS_MODE_1;
1608
1609 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1610 if (ret < 0) {
1611 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1612 return ret;
1613 }
1614
1615 /* clear wol status, enable energy detection */
1616 val &= ~PMT_CTL_WUPS;
1617 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
1618
1619 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1620 if (ret < 0) {
1621 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1622 return ret;
1623 }
1624
1625 pdata->suspend_flags |= SUSPEND_SUSPEND1;
1626
1627 return 0;
1628 }
1629
1630 static int smsc75xx_enter_suspend2(struct usbnet *dev)
1631 {
1632 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1633 u32 val;
1634 int ret;
1635
1636 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1637 if (ret < 0) {
1638 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1639 return ret;
1640 }
1641
1642 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1643 val |= PMT_CTL_SUS_MODE_2;
1644
1645 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1646 if (ret < 0) {
1647 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1648 return ret;
1649 }
1650
1651 pdata->suspend_flags |= SUSPEND_SUSPEND2;
1652
1653 return 0;
1654 }
1655
1656 static int smsc75xx_enter_suspend3(struct usbnet *dev)
1657 {
1658 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1659 u32 val;
1660 int ret;
1661
1662 ret = smsc75xx_read_reg_nopm(dev, FCT_RX_CTL, &val);
1663 if (ret < 0) {
1664 netdev_warn(dev->net, "Error reading FCT_RX_CTL\n");
1665 return ret;
1666 }
1667
1668 if (val & FCT_RX_CTL_RXUSED) {
1669 netdev_dbg(dev->net, "rx fifo not empty in autosuspend\n");
1670 return -EBUSY;
1671 }
1672
1673 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1674 if (ret < 0) {
1675 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1676 return ret;
1677 }
1678
1679 val &= ~(PMT_CTL_SUS_MODE | PMT_CTL_WUPS | PMT_CTL_PHY_RST);
1680 val |= PMT_CTL_SUS_MODE_3 | PMT_CTL_RES_CLR_WKP_EN;
1681
1682 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1683 if (ret < 0) {
1684 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1685 return ret;
1686 }
1687
1688 /* clear wol status */
1689 val &= ~PMT_CTL_WUPS;
1690 val |= PMT_CTL_WUPS_WOL;
1691
1692 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1693 if (ret < 0) {
1694 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1695 return ret;
1696 }
1697
1698 pdata->suspend_flags |= SUSPEND_SUSPEND3;
1699
1700 return 0;
1701 }
1702
1703 static int smsc75xx_enable_phy_wakeup_interrupts(struct usbnet *dev, u16 mask)
1704 {
1705 struct mii_if_info *mii = &dev->mii;
1706 int ret;
1707
1708 netdev_dbg(dev->net, "enabling PHY wakeup interrupts\n");
1709
1710 /* read to clear */
1711 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_SRC);
1712 if (ret < 0) {
1713 netdev_warn(dev->net, "Error reading PHY_INT_SRC\n");
1714 return ret;
1715 }
1716
1717 /* enable interrupt source */
1718 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, PHY_INT_MASK);
1719 if (ret < 0) {
1720 netdev_warn(dev->net, "Error reading PHY_INT_MASK\n");
1721 return ret;
1722 }
1723
1724 ret |= mask;
1725
1726 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id, PHY_INT_MASK, ret);
1727
1728 return 0;
1729 }
1730
1731 static int smsc75xx_link_ok_nopm(struct usbnet *dev)
1732 {
1733 struct mii_if_info *mii = &dev->mii;
1734 int ret;
1735
1736 /* first, a dummy read, needed to latch some MII phys */
1737 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1738 if (ret < 0) {
1739 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1740 return ret;
1741 }
1742
1743 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id, MII_BMSR);
1744 if (ret < 0) {
1745 netdev_warn(dev->net, "Error reading MII_BMSR\n");
1746 return ret;
1747 }
1748
1749 return !!(ret & BMSR_LSTATUS);
1750 }
1751
1752 static int smsc75xx_autosuspend(struct usbnet *dev, u32 link_up)
1753 {
1754 int ret;
1755
1756 if (!netif_running(dev->net)) {
1757 /* interface is ifconfig down so fully power down hw */
1758 netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
1759 return smsc75xx_enter_suspend2(dev);
1760 }
1761
1762 if (!link_up) {
1763 /* link is down so enter EDPD mode */
1764 netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
1765
1766 /* enable PHY wakeup events for if cable is attached */
1767 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1768 PHY_INT_MASK_ANEG_COMP);
1769 if (ret < 0) {
1770 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1771 return ret;
1772 }
1773
1774 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1775 return smsc75xx_enter_suspend1(dev);
1776 }
1777
1778 /* enable PHY wakeup events so we remote wakeup if cable is pulled */
1779 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1780 PHY_INT_MASK_LINK_DOWN);
1781 if (ret < 0) {
1782 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1783 return ret;
1784 }
1785
1786 netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
1787 return smsc75xx_enter_suspend3(dev);
1788 }
1789
1790 static int smsc75xx_suspend(struct usb_interface *intf, pm_message_t message)
1791 {
1792 struct usbnet *dev = usb_get_intfdata(intf);
1793 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
1794 u32 val, link_up;
1795 int ret;
1796
1797 ret = usbnet_suspend(intf, message);
1798 if (ret < 0) {
1799 netdev_warn(dev->net, "usbnet_suspend error\n");
1800 return ret;
1801 }
1802
1803 if (pdata->suspend_flags) {
1804 netdev_warn(dev->net, "error during last resume\n");
1805 pdata->suspend_flags = 0;
1806 }
1807
1808 /* determine if link is up using only _nopm functions */
1809 link_up = smsc75xx_link_ok_nopm(dev);
1810
1811 if (message.event == PM_EVENT_AUTO_SUSPEND) {
1812 ret = smsc75xx_autosuspend(dev, link_up);
1813 goto done;
1814 }
1815
1816 /* if we get this far we're not autosuspending */
1817 /* if no wol options set, or if link is down and we're not waking on
1818 * PHY activity, enter lowest power SUSPEND2 mode
1819 */
1820 if (!(pdata->wolopts & SUPPORTED_WAKE) ||
1821 !(link_up || (pdata->wolopts & WAKE_PHY))) {
1822 netdev_info(dev->net, "entering SUSPEND2 mode\n");
1823
1824 /* disable energy detect (link up) & wake up events */
1825 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1826 if (ret < 0) {
1827 netdev_warn(dev->net, "Error reading WUCSR\n");
1828 goto done;
1829 }
1830
1831 val &= ~(WUCSR_MPEN | WUCSR_WUEN);
1832
1833 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1834 if (ret < 0) {
1835 netdev_warn(dev->net, "Error writing WUCSR\n");
1836 goto done;
1837 }
1838
1839 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1840 if (ret < 0) {
1841 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1842 goto done;
1843 }
1844
1845 val &= ~(PMT_CTL_ED_EN | PMT_CTL_WOL_EN);
1846
1847 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
1848 if (ret < 0) {
1849 netdev_warn(dev->net, "Error writing PMT_CTL\n");
1850 goto done;
1851 }
1852
1853 ret = smsc75xx_enter_suspend2(dev);
1854 goto done;
1855 }
1856
1857 if (pdata->wolopts & WAKE_PHY) {
1858 ret = smsc75xx_enable_phy_wakeup_interrupts(dev,
1859 (PHY_INT_MASK_ANEG_COMP | PHY_INT_MASK_LINK_DOWN));
1860 if (ret < 0) {
1861 netdev_warn(dev->net, "error enabling PHY wakeup ints\n");
1862 goto done;
1863 }
1864
1865 /* if link is down then configure EDPD and enter SUSPEND1,
1866 * otherwise enter SUSPEND0 below
1867 */
1868 if (!link_up) {
1869 struct mii_if_info *mii = &dev->mii;
1870 netdev_info(dev->net, "entering SUSPEND1 mode\n");
1871
1872 /* enable energy detect power-down mode */
1873 ret = smsc75xx_mdio_read_nopm(dev->net, mii->phy_id,
1874 PHY_MODE_CTRL_STS);
1875 if (ret < 0) {
1876 netdev_warn(dev->net, "Error reading PHY_MODE_CTRL_STS\n");
1877 goto done;
1878 }
1879
1880 ret |= MODE_CTRL_STS_EDPWRDOWN;
1881
1882 smsc75xx_mdio_write_nopm(dev->net, mii->phy_id,
1883 PHY_MODE_CTRL_STS, ret);
1884
1885 /* enter SUSPEND1 mode */
1886 ret = smsc75xx_enter_suspend1(dev);
1887 goto done;
1888 }
1889 }
1890
1891 if (pdata->wolopts & (WAKE_MCAST | WAKE_ARP)) {
1892 int i, filter = 0;
1893
1894 /* disable all filters */
1895 for (i = 0; i < WUF_NUM; i++) {
1896 ret = smsc75xx_write_reg_nopm(dev, WUF_CFGX + i * 4, 0);
1897 if (ret < 0) {
1898 netdev_warn(dev->net, "Error writing WUF_CFGX\n");
1899 goto done;
1900 }
1901 }
1902
1903 if (pdata->wolopts & WAKE_MCAST) {
1904 const u8 mcast[] = {0x01, 0x00, 0x5E};
1905 netdev_info(dev->net, "enabling multicast detection\n");
1906
1907 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_MULTICAST
1908 | smsc_crc(mcast, 3);
1909 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0007);
1910 if (ret < 0) {
1911 netdev_warn(dev->net, "Error writing wakeup filter\n");
1912 goto done;
1913 }
1914 }
1915
1916 if (pdata->wolopts & WAKE_ARP) {
1917 const u8 arp[] = {0x08, 0x06};
1918 netdev_info(dev->net, "enabling ARP detection\n");
1919
1920 val = WUF_CFGX_EN | WUF_CFGX_ATYPE_ALL | (0x0C << 16)
1921 | smsc_crc(arp, 2);
1922 ret = smsc75xx_write_wuff(dev, filter++, val, 0x0003);
1923 if (ret < 0) {
1924 netdev_warn(dev->net, "Error writing wakeup filter\n");
1925 goto done;
1926 }
1927 }
1928
1929 /* clear any pending pattern match packet status */
1930 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1931 if (ret < 0) {
1932 netdev_warn(dev->net, "Error reading WUCSR\n");
1933 goto done;
1934 }
1935
1936 val |= WUCSR_WUFR;
1937
1938 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1939 if (ret < 0) {
1940 netdev_warn(dev->net, "Error writing WUCSR\n");
1941 goto done;
1942 }
1943
1944 netdev_info(dev->net, "enabling packet match detection\n");
1945 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1946 if (ret < 0) {
1947 netdev_warn(dev->net, "Error reading WUCSR\n");
1948 goto done;
1949 }
1950
1951 val |= WUCSR_WUEN;
1952
1953 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1954 if (ret < 0) {
1955 netdev_warn(dev->net, "Error writing WUCSR\n");
1956 goto done;
1957 }
1958 } else {
1959 netdev_info(dev->net, "disabling packet match detection\n");
1960 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1961 if (ret < 0) {
1962 netdev_warn(dev->net, "Error reading WUCSR\n");
1963 goto done;
1964 }
1965
1966 val &= ~WUCSR_WUEN;
1967
1968 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1969 if (ret < 0) {
1970 netdev_warn(dev->net, "Error writing WUCSR\n");
1971 goto done;
1972 }
1973 }
1974
1975 /* disable magic, bcast & unicast wakeup sources */
1976 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
1977 if (ret < 0) {
1978 netdev_warn(dev->net, "Error reading WUCSR\n");
1979 goto done;
1980 }
1981
1982 val &= ~(WUCSR_MPEN | WUCSR_BCST_EN | WUCSR_PFDA_EN);
1983
1984 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
1985 if (ret < 0) {
1986 netdev_warn(dev->net, "Error writing WUCSR\n");
1987 goto done;
1988 }
1989
1990 if (pdata->wolopts & WAKE_PHY) {
1991 netdev_info(dev->net, "enabling PHY wakeup\n");
1992
1993 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
1994 if (ret < 0) {
1995 netdev_warn(dev->net, "Error reading PMT_CTL\n");
1996 goto done;
1997 }
1998
1999 /* clear wol status, enable energy detection */
2000 val &= ~PMT_CTL_WUPS;
2001 val |= (PMT_CTL_WUPS_ED | PMT_CTL_ED_EN);
2002
2003 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2004 if (ret < 0) {
2005 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2006 goto done;
2007 }
2008 }
2009
2010 if (pdata->wolopts & WAKE_MAGIC) {
2011 netdev_info(dev->net, "enabling magic packet wakeup\n");
2012 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2013 if (ret < 0) {
2014 netdev_warn(dev->net, "Error reading WUCSR\n");
2015 goto done;
2016 }
2017
2018 /* clear any pending magic packet status */
2019 val |= WUCSR_MPR | WUCSR_MPEN;
2020
2021 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2022 if (ret < 0) {
2023 netdev_warn(dev->net, "Error writing WUCSR\n");
2024 goto done;
2025 }
2026 }
2027
2028 if (pdata->wolopts & WAKE_BCAST) {
2029 netdev_info(dev->net, "enabling broadcast detection\n");
2030 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2031 if (ret < 0) {
2032 netdev_warn(dev->net, "Error reading WUCSR\n");
2033 goto done;
2034 }
2035
2036 val |= WUCSR_BCAST_FR | WUCSR_BCST_EN;
2037
2038 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2039 if (ret < 0) {
2040 netdev_warn(dev->net, "Error writing WUCSR\n");
2041 goto done;
2042 }
2043 }
2044
2045 if (pdata->wolopts & WAKE_UCAST) {
2046 netdev_info(dev->net, "enabling unicast detection\n");
2047 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2048 if (ret < 0) {
2049 netdev_warn(dev->net, "Error reading WUCSR\n");
2050 goto done;
2051 }
2052
2053 val |= WUCSR_WUFR | WUCSR_PFDA_EN;
2054
2055 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2056 if (ret < 0) {
2057 netdev_warn(dev->net, "Error writing WUCSR\n");
2058 goto done;
2059 }
2060 }
2061
2062 /* enable receiver to enable frame reception */
2063 ret = smsc75xx_read_reg_nopm(dev, MAC_RX, &val);
2064 if (ret < 0) {
2065 netdev_warn(dev->net, "Failed to read MAC_RX: %d\n", ret);
2066 goto done;
2067 }
2068
2069 val |= MAC_RX_RXEN;
2070
2071 ret = smsc75xx_write_reg_nopm(dev, MAC_RX, val);
2072 if (ret < 0) {
2073 netdev_warn(dev->net, "Failed to write MAC_RX: %d\n", ret);
2074 goto done;
2075 }
2076
2077 /* some wol options are enabled, so enter SUSPEND0 */
2078 netdev_info(dev->net, "entering SUSPEND0 mode\n");
2079 ret = smsc75xx_enter_suspend0(dev);
2080
2081 done:
2082 /*
2083 * TODO: resume() might need to handle the suspend failure
2084 * in system sleep
2085 */
2086 if (ret && PMSG_IS_AUTO(message))
2087 usbnet_resume(intf);
2088 return ret;
2089 }
2090
2091 static int smsc75xx_resume(struct usb_interface *intf)
2092 {
2093 struct usbnet *dev = usb_get_intfdata(intf);
2094 struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
2095 u8 suspend_flags = pdata->suspend_flags;
2096 int ret;
2097 u32 val;
2098
2099 netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
2100
2101 /* do this first to ensure it's cleared even in error case */
2102 pdata->suspend_flags = 0;
2103
2104 if (suspend_flags & SUSPEND_ALLMODES) {
2105 /* Disable wakeup sources */
2106 ret = smsc75xx_read_reg_nopm(dev, WUCSR, &val);
2107 if (ret < 0) {
2108 netdev_warn(dev->net, "Error reading WUCSR\n");
2109 return ret;
2110 }
2111
2112 val &= ~(WUCSR_WUEN | WUCSR_MPEN | WUCSR_PFDA_EN
2113 | WUCSR_BCST_EN);
2114
2115 ret = smsc75xx_write_reg_nopm(dev, WUCSR, val);
2116 if (ret < 0) {
2117 netdev_warn(dev->net, "Error writing WUCSR\n");
2118 return ret;
2119 }
2120
2121 /* clear wake-up status */
2122 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2123 if (ret < 0) {
2124 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2125 return ret;
2126 }
2127
2128 val &= ~PMT_CTL_WOL_EN;
2129 val |= PMT_CTL_WUPS;
2130
2131 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2132 if (ret < 0) {
2133 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2134 return ret;
2135 }
2136 }
2137
2138 if (suspend_flags & SUSPEND_SUSPEND2) {
2139 netdev_info(dev->net, "resuming from SUSPEND2\n");
2140
2141 ret = smsc75xx_read_reg_nopm(dev, PMT_CTL, &val);
2142 if (ret < 0) {
2143 netdev_warn(dev->net, "Error reading PMT_CTL\n");
2144 return ret;
2145 }
2146
2147 val |= PMT_CTL_PHY_PWRUP;
2148
2149 ret = smsc75xx_write_reg_nopm(dev, PMT_CTL, val);
2150 if (ret < 0) {
2151 netdev_warn(dev->net, "Error writing PMT_CTL\n");
2152 return ret;
2153 }
2154 }
2155
2156 ret = smsc75xx_wait_ready(dev, 1);
2157 if (ret < 0) {
2158 netdev_warn(dev->net, "device not ready in smsc75xx_resume\n");
2159 return ret;
2160 }
2161
2162 return usbnet_resume(intf);
2163 }
2164
2165 static void smsc75xx_rx_csum_offload(struct usbnet *dev, struct sk_buff *skb,
2166 u32 rx_cmd_a, u32 rx_cmd_b)
2167 {
2168 if (!(dev->net->features & NETIF_F_RXCSUM) ||
2169 unlikely(rx_cmd_a & RX_CMD_A_LCSM)) {
2170 skb->ip_summed = CHECKSUM_NONE;
2171 } else {
2172 skb->csum = ntohs((u16)(rx_cmd_b >> RX_CMD_B_CSUM_SHIFT));
2173 skb->ip_summed = CHECKSUM_COMPLETE;
2174 }
2175 }
2176
2177 static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
2178 {
2179 /* This check is no longer done by usbnet */
2180 if (skb->len < dev->net->hard_header_len)
2181 return 0;
2182
2183 while (skb->len > 0) {
2184 u32 rx_cmd_a, rx_cmd_b, align_count, size;
2185 struct sk_buff *ax_skb;
2186 unsigned char *packet;
2187
2188 rx_cmd_a = get_unaligned_le32(skb->data);
2189 skb_pull(skb, 4);
2190
2191 rx_cmd_b = get_unaligned_le32(skb->data);
2192 skb_pull(skb, 4 + RXW_PADDING);
2193
2194 packet = skb->data;
2195
2196 /* get the packet length */
2197 size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
2198 align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
2199
2200 if (unlikely(size > skb->len)) {
2201 netif_dbg(dev, rx_err, dev->net,
2202 "size err rx_cmd_a=0x%08x\n",
2203 rx_cmd_a);
2204 return 0;
2205 }
2206
2207 if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
2208 netif_dbg(dev, rx_err, dev->net,
2209 "Error rx_cmd_a=0x%08x\n", rx_cmd_a);
2210 dev->net->stats.rx_errors++;
2211 dev->net->stats.rx_dropped++;
2212
2213 if (rx_cmd_a & RX_CMD_A_FCS)
2214 dev->net->stats.rx_crc_errors++;
2215 else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT))
2216 dev->net->stats.rx_frame_errors++;
2217 } else {
2218 /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */
2219 if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) {
2220 netif_dbg(dev, rx_err, dev->net,
2221 "size err rx_cmd_a=0x%08x\n",
2222 rx_cmd_a);
2223 return 0;
2224 }
2225
2226 /* last frame in this batch */
2227 if (skb->len == size) {
2228 smsc75xx_rx_csum_offload(dev, skb, rx_cmd_a,
2229 rx_cmd_b);
2230
2231 skb_trim(skb, skb->len - 4); /* remove fcs */
2232
2233 return 1;
2234 }
2235
2236 /* Use "size - 4" to remove fcs */
2237 ax_skb = netdev_alloc_skb_ip_align(dev->net, size - 4);
2238 if (unlikely(!ax_skb)) {
2239 netdev_warn(dev->net, "Error allocating skb\n");
2240 return 0;
2241 }
2242
2243 skb_put(ax_skb, size - 4);
2244 memcpy(ax_skb->data, packet, size - 4);
2245
2246 smsc75xx_rx_csum_offload(dev, ax_skb, rx_cmd_a,
2247 rx_cmd_b);
2248
2249 usbnet_skb_return(dev, ax_skb);
2250 }
2251
2252 skb_pull(skb, size);
2253
2254 /* padding bytes before the next frame starts */
2255 if (skb->len)
2256 skb_pull(skb, align_count);
2257 }
2258
2259 return 1;
2260 }
2261
2262 static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
2263 struct sk_buff *skb, gfp_t flags)
2264 {
2265 u32 tx_cmd_a, tx_cmd_b;
2266 void *ptr;
2267
2268 if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
2269 dev_kfree_skb_any(skb);
2270 return NULL;
2271 }
2272
2273 tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN) | TX_CMD_A_FCS;
2274
2275 if (skb->ip_summed == CHECKSUM_PARTIAL)
2276 tx_cmd_a |= TX_CMD_A_IPE | TX_CMD_A_TPE;
2277
2278 if (skb_is_gso(skb)) {
2279 u16 mss = max(skb_shinfo(skb)->gso_size, TX_MSS_MIN);
2280 tx_cmd_b = (mss << TX_CMD_B_MSS_SHIFT) & TX_CMD_B_MSS;
2281
2282 tx_cmd_a |= TX_CMD_A_LSO;
2283 } else {
2284 tx_cmd_b = 0;
2285 }
2286
2287 ptr = skb_push(skb, 8);
2288 put_unaligned_le32(tx_cmd_a, ptr);
2289 put_unaligned_le32(tx_cmd_b, ptr + 4);
2290
2291 return skb;
2292 }
2293
2294 static int smsc75xx_manage_power(struct usbnet *dev, int on)
2295 {
2296 dev->intf->needs_remote_wakeup = on;
2297 return 0;
2298 }
2299
2300 static const struct driver_info smsc75xx_info = {
2301 .description = "smsc75xx USB 2.0 Gigabit Ethernet",
2302 .bind = smsc75xx_bind,
2303 .unbind = smsc75xx_unbind,
2304 .link_reset = smsc75xx_link_reset,
2305 .reset = smsc75xx_reset,
2306 .rx_fixup = smsc75xx_rx_fixup,
2307 .tx_fixup = smsc75xx_tx_fixup,
2308 .status = smsc75xx_status,
2309 .manage_power = smsc75xx_manage_power,
2310 .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
2311 };
2312
2313 static const struct usb_device_id products[] = {
2314 {
2315 /* SMSC7500 USB Gigabit Ethernet Device */
2316 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7500),
2317 .driver_info = (unsigned long) &smsc75xx_info,
2318 },
2319 {
2320 /* SMSC7500 USB Gigabit Ethernet Device */
2321 USB_DEVICE(USB_VENDOR_ID_SMSC, USB_PRODUCT_ID_LAN7505),
2322 .driver_info = (unsigned long) &smsc75xx_info,
2323 },
2324 { }, /* END */
2325 };
2326 MODULE_DEVICE_TABLE(usb, products);
2327
2328 static struct usb_driver smsc75xx_driver = {
2329 .name = SMSC_CHIPNAME,
2330 .id_table = products,
2331 .probe = usbnet_probe,
2332 .suspend = smsc75xx_suspend,
2333 .resume = smsc75xx_resume,
2334 .reset_resume = smsc75xx_resume,
2335 .disconnect = usbnet_disconnect,
2336 .disable_hub_initiated_lpm = 1,
2337 .supports_autosuspend = 1,
2338 };
2339
2340 module_usb_driver(smsc75xx_driver);
2341
2342 MODULE_AUTHOR("Nancy Lin");
2343 MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
2344 MODULE_DESCRIPTION("SMSC75XX USB 2.0 Gigabit Ethernet Devices");
2345 MODULE_LICENSE("GPL");
Kernel DRM miscellaneous fixes and cross-tree changes