xref: /freebsd/sys/dev/usb/net/if_smsc.c (revision 162ae9c834f6d9f9cb443bd62cceb23e0b5fef48)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2012
5  *	Ben Gray <bgray@freebsd.org>.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 /*
33  * SMSC LAN9xxx devices (http://www.smsc.com/)
34  *
35  * The LAN9500 & LAN9500A devices are stand-alone USB to Ethernet chips that
36  * support USB 2.0 and 10/100 Mbps Ethernet.
37  *
38  * The LAN951x devices are an integrated USB hub and USB to Ethernet adapter.
39  * The driver only covers the Ethernet part, the standard USB hub driver
40  * supports the hub part.
41  *
42  * This driver is closely modelled on the Linux driver written and copyrighted
43  * by SMSC.
44  *
45  *
46  *
47  *
48  * H/W TCP & UDP Checksum Offloading
49  * ---------------------------------
50  * The chip supports both tx and rx offloading of UDP & TCP checksums, this
51  * feature can be dynamically enabled/disabled.
52  *
53  * RX checksuming is performed across bytes after the IPv4 header to the end of
54  * the Ethernet frame, this means if the frame is padded with non-zero values
55  * the H/W checksum will be incorrect, however the rx code compensates for this.
56  *
57  * TX checksuming is more complicated, the device requires a special header to
58  * be prefixed onto the start of the frame which indicates the start and end
59  * positions of the UDP or TCP frame.  This requires the driver to manually
60  * go through the packet data and decode the headers prior to sending.
61  * On Linux they generally provide cues to the location of the csum and the
62  * area to calculate it over, on FreeBSD we seem to have to do it all ourselves,
63  * hence this is not as optimal and therefore h/w tX checksum is currently not
64  * implemented.
65  *
66  */
67 #include <sys/stdint.h>
68 #include <sys/stddef.h>
69 #include <sys/param.h>
70 #include <sys/queue.h>
71 #include <sys/types.h>
72 #include <sys/systm.h>
73 #include <sys/kernel.h>
74 #include <sys/bus.h>
75 #include <sys/module.h>
76 #include <sys/lock.h>
77 #include <sys/mutex.h>
78 #include <sys/condvar.h>
79 #include <sys/socket.h>
80 #include <sys/sysctl.h>
81 #include <sys/sx.h>
82 #include <sys/unistd.h>
83 #include <sys/callout.h>
84 #include <sys/malloc.h>
85 #include <sys/priv.h>
86 #include <sys/random.h>
87 
88 #include <net/if.h>
89 #include <net/if_var.h>
90 #include <net/if_media.h>
91 
92 #include <dev/mii/mii.h>
93 #include <dev/mii/miivar.h>
94 
95 #include <netinet/in.h>
96 #include <netinet/ip.h>
97 
98 #include "opt_platform.h"
99 
100 #ifdef FDT
101 #include <dev/fdt/fdt_common.h>
102 #include <dev/ofw/ofw_bus.h>
103 #include <dev/ofw/ofw_bus_subr.h>
104 #include <dev/usb/usb_fdt_support.h>
105 #endif
106 
107 #include <dev/usb/usb.h>
108 #include <dev/usb/usbdi.h>
109 #include <dev/usb/usbdi_util.h>
110 #include "usbdevs.h"
111 
112 #define	USB_DEBUG_VAR smsc_debug
113 #include <dev/usb/usb_debug.h>
114 #include <dev/usb/usb_process.h>
115 
116 #include <dev/usb/net/usb_ethernet.h>
117 
118 #include <dev/usb/net/if_smscreg.h>
119 
120 #include "miibus_if.h"
121 
122 #ifdef USB_DEBUG
123 static int smsc_debug = 0;
124 
125 SYSCTL_NODE(_hw_usb, OID_AUTO, smsc, CTLFLAG_RW, 0, "USB smsc");
126 SYSCTL_INT(_hw_usb_smsc, OID_AUTO, debug, CTLFLAG_RWTUN, &smsc_debug, 0,
127     "Debug level");
128 #endif
129 
130 /*
131  * Various supported device vendors/products.
132  */
133 static const struct usb_device_id smsc_devs[] = {
134 #define	SMSC_DEV(p,i) { USB_VPI(USB_VENDOR_SMC2, USB_PRODUCT_SMC2_##p, i) }
135 	SMSC_DEV(LAN89530_ETH, 0),
136 	SMSC_DEV(LAN9500_ETH, 0),
137 	SMSC_DEV(LAN9500_ETH_2, 0),
138 	SMSC_DEV(LAN9500A_ETH, 0),
139 	SMSC_DEV(LAN9500A_ETH_2, 0),
140 	SMSC_DEV(LAN9505_ETH, 0),
141 	SMSC_DEV(LAN9505A_ETH, 0),
142 	SMSC_DEV(LAN9514_ETH, 0),
143 	SMSC_DEV(LAN9514_ETH_2, 0),
144 	SMSC_DEV(LAN9530_ETH, 0),
145 	SMSC_DEV(LAN9730_ETH, 0),
146 	SMSC_DEV(LAN9500_SAL10, 0),
147 	SMSC_DEV(LAN9505_SAL10, 0),
148 	SMSC_DEV(LAN9500A_SAL10, 0),
149 	SMSC_DEV(LAN9505A_SAL10, 0),
150 	SMSC_DEV(LAN9514_SAL10, 0),
151 	SMSC_DEV(LAN9500A_HAL, 0),
152 	SMSC_DEV(LAN9505A_HAL, 0),
153 #undef SMSC_DEV
154 };
155 
156 
157 #ifdef USB_DEBUG
158 #define smsc_dbg_printf(sc, fmt, args...) \
159 	do { \
160 		if (smsc_debug > 0) \
161 			device_printf((sc)->sc_ue.ue_dev, "debug: " fmt, ##args); \
162 	} while(0)
163 #else
164 #define smsc_dbg_printf(sc, fmt, args...) do { } while (0)
165 #endif
166 
167 #define smsc_warn_printf(sc, fmt, args...) \
168 	device_printf((sc)->sc_ue.ue_dev, "warning: " fmt, ##args)
169 
170 #define smsc_err_printf(sc, fmt, args...) \
171 	device_printf((sc)->sc_ue.ue_dev, "error: " fmt, ##args)
172 
173 
174 #define ETHER_IS_VALID(addr) \
175 	(!ETHER_IS_MULTICAST(addr) && !ETHER_IS_ZERO(addr))
176 
177 static device_probe_t smsc_probe;
178 static device_attach_t smsc_attach;
179 static device_detach_t smsc_detach;
180 
181 static usb_callback_t smsc_bulk_read_callback;
182 static usb_callback_t smsc_bulk_write_callback;
183 
184 static miibus_readreg_t smsc_miibus_readreg;
185 static miibus_writereg_t smsc_miibus_writereg;
186 static miibus_statchg_t smsc_miibus_statchg;
187 
188 #if __FreeBSD_version > 1000000
189 static int smsc_attach_post_sub(struct usb_ether *ue);
190 #endif
191 static uether_fn_t smsc_attach_post;
192 static uether_fn_t smsc_init;
193 static uether_fn_t smsc_stop;
194 static uether_fn_t smsc_start;
195 static uether_fn_t smsc_tick;
196 static uether_fn_t smsc_setmulti;
197 static uether_fn_t smsc_setpromisc;
198 
199 static int	smsc_ifmedia_upd(struct ifnet *);
200 static void	smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *);
201 
202 static int smsc_chip_init(struct smsc_softc *sc);
203 static int smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
204 
205 static const struct usb_config smsc_config[SMSC_N_TRANSFER] = {
206 
207 	[SMSC_BULK_DT_WR] = {
208 		.type = UE_BULK,
209 		.endpoint = UE_ADDR_ANY,
210 		.direction = UE_DIR_OUT,
211 		.frames = 16,
212 		.bufsize = 16 * (MCLBYTES + 16),
213 		.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
214 		.callback = smsc_bulk_write_callback,
215 		.timeout = 10000,	/* 10 seconds */
216 	},
217 
218 	[SMSC_BULK_DT_RD] = {
219 		.type = UE_BULK,
220 		.endpoint = UE_ADDR_ANY,
221 		.direction = UE_DIR_IN,
222 		.bufsize = 20480,	/* bytes */
223 		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
224 		.callback = smsc_bulk_read_callback,
225 		.timeout = 0,	/* no timeout */
226 	},
227 
228 	/* The SMSC chip supports an interrupt endpoints, however they aren't
229 	 * needed as we poll on the MII status.
230 	 */
231 };
232 
233 static const struct usb_ether_methods smsc_ue_methods = {
234 	.ue_attach_post = smsc_attach_post,
235 #if __FreeBSD_version > 1000000
236 	.ue_attach_post_sub = smsc_attach_post_sub,
237 #endif
238 	.ue_start = smsc_start,
239 	.ue_ioctl = smsc_ioctl,
240 	.ue_init = smsc_init,
241 	.ue_stop = smsc_stop,
242 	.ue_tick = smsc_tick,
243 	.ue_setmulti = smsc_setmulti,
244 	.ue_setpromisc = smsc_setpromisc,
245 	.ue_mii_upd = smsc_ifmedia_upd,
246 	.ue_mii_sts = smsc_ifmedia_sts,
247 };
248 
249 /**
250  *	smsc_read_reg - Reads a 32-bit register on the device
251  *	@sc: driver soft context
252  *	@off: offset of the register
253  *	@data: pointer a value that will be populated with the register value
254  *
255  *	LOCKING:
256  *	The device lock must be held before calling this function.
257  *
258  *	RETURNS:
259  *	0 on success, a USB_ERR_?? error code on failure.
260  */
261 static int
262 smsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data)
263 {
264 	struct usb_device_request req;
265 	uint32_t buf;
266 	usb_error_t err;
267 
268 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
269 
270 	req.bmRequestType = UT_READ_VENDOR_DEVICE;
271 	req.bRequest = SMSC_UR_READ_REG;
272 	USETW(req.wValue, 0);
273 	USETW(req.wIndex, off);
274 	USETW(req.wLength, 4);
275 
276 	err = uether_do_request(&sc->sc_ue, &req, &buf, 1000);
277 	if (err != 0)
278 		smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off);
279 
280 	*data = le32toh(buf);
281 
282 	return (err);
283 }
284 
285 /**
286  *	smsc_write_reg - Writes a 32-bit register on the device
287  *	@sc: driver soft context
288  *	@off: offset of the register
289  *	@data: the 32-bit value to write into the register
290  *
291  *	LOCKING:
292  *	The device lock must be held before calling this function.
293  *
294  *	RETURNS:
295  *	0 on success, a USB_ERR_?? error code on failure.
296  */
297 static int
298 smsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data)
299 {
300 	struct usb_device_request req;
301 	uint32_t buf;
302 	usb_error_t err;
303 
304 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
305 
306 	buf = htole32(data);
307 
308 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
309 	req.bRequest = SMSC_UR_WRITE_REG;
310 	USETW(req.wValue, 0);
311 	USETW(req.wIndex, off);
312 	USETW(req.wLength, 4);
313 
314 	err = uether_do_request(&sc->sc_ue, &req, &buf, 1000);
315 	if (err != 0)
316 		smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off);
317 
318 	return (err);
319 }
320 
321 /**
322  *	smsc_wait_for_bits - Polls on a register value until bits are cleared
323  *	@sc: soft context
324  *	@reg: offset of the register
325  *	@bits: if the bits are clear the function returns
326  *
327  *	LOCKING:
328  *	The device lock must be held before calling this function.
329  *
330  *	RETURNS:
331  *	0 on success, or a USB_ERR_?? error code on failure.
332  */
333 static int
334 smsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits)
335 {
336 	usb_ticks_t start_ticks;
337 	const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
338 	uint32_t val;
339 	int err;
340 
341 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
342 
343 	start_ticks = (usb_ticks_t)ticks;
344 	do {
345 		if ((err = smsc_read_reg(sc, reg, &val)) != 0)
346 			return (err);
347 		if (!(val & bits))
348 			return (0);
349 
350 		uether_pause(&sc->sc_ue, hz / 100);
351 	} while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks);
352 
353 	return (USB_ERR_TIMEOUT);
354 }
355 
356 /**
357  *	smsc_eeprom_read - Reads the attached EEPROM
358  *	@sc: soft context
359  *	@off: the eeprom address offset
360  *	@buf: stores the bytes
361  *	@buflen: the number of bytes to read
362  *
363  *	Simply reads bytes from an attached eeprom.
364  *
365  *	LOCKING:
366  *	The function takes and releases the device lock if it is not already held.
367  *
368  *	RETURNS:
369  *	0 on success, or a USB_ERR_?? error code on failure.
370  */
371 static int
372 smsc_eeprom_read(struct smsc_softc *sc, uint16_t off, uint8_t *buf, uint16_t buflen)
373 {
374 	usb_ticks_t start_ticks;
375 	const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
376 	int err;
377 	int locked;
378 	uint32_t val;
379 	uint16_t i;
380 
381 	locked = mtx_owned(&sc->sc_mtx);
382 	if (!locked)
383 		SMSC_LOCK(sc);
384 
385 	err = smsc_wait_for_bits(sc, SMSC_EEPROM_CMD, SMSC_EEPROM_CMD_BUSY);
386 	if (err != 0) {
387 		smsc_warn_printf(sc, "eeprom busy, failed to read data\n");
388 		goto done;
389 	}
390 
391 	/* start reading the bytes, one at a time */
392 	for (i = 0; i < buflen; i++) {
393 
394 		val = SMSC_EEPROM_CMD_BUSY | (SMSC_EEPROM_CMD_ADDR_MASK & (off + i));
395 		if ((err = smsc_write_reg(sc, SMSC_EEPROM_CMD, val)) != 0)
396 			goto done;
397 
398 		start_ticks = (usb_ticks_t)ticks;
399 		do {
400 			if ((err = smsc_read_reg(sc, SMSC_EEPROM_CMD, &val)) != 0)
401 				goto done;
402 			if (!(val & SMSC_EEPROM_CMD_BUSY) || (val & SMSC_EEPROM_CMD_TIMEOUT))
403 				break;
404 
405 			uether_pause(&sc->sc_ue, hz / 100);
406 		} while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks);
407 
408 		if (val & (SMSC_EEPROM_CMD_BUSY | SMSC_EEPROM_CMD_TIMEOUT)) {
409 			smsc_warn_printf(sc, "eeprom command failed\n");
410 			err = USB_ERR_IOERROR;
411 			break;
412 		}
413 
414 		if ((err = smsc_read_reg(sc, SMSC_EEPROM_DATA, &val)) != 0)
415 			goto done;
416 
417 		buf[i] = (val & 0xff);
418 	}
419 
420 done:
421 	if (!locked)
422 		SMSC_UNLOCK(sc);
423 
424 	return (err);
425 }
426 
427 /**
428  *	smsc_miibus_readreg - Reads a MII/MDIO register
429  *	@dev: usb ether device
430  *	@phy: the number of phy reading from
431  *	@reg: the register address
432  *
433  *	Attempts to read a phy register over the MII bus.
434  *
435  *	LOCKING:
436  *	Takes and releases the device mutex lock if not already held.
437  *
438  *	RETURNS:
439  *	Returns the 16-bits read from the MII register, if this function fails 0
440  *	is returned.
441  */
442 static int
443 smsc_miibus_readreg(device_t dev, int phy, int reg)
444 {
445 	struct smsc_softc *sc = device_get_softc(dev);
446 	int locked;
447 	uint32_t addr;
448 	uint32_t val = 0;
449 
450 	locked = mtx_owned(&sc->sc_mtx);
451 	if (!locked)
452 		SMSC_LOCK(sc);
453 
454 	if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) {
455 		smsc_warn_printf(sc, "MII is busy\n");
456 		goto done;
457 	}
458 
459 	addr = (phy << 11) | (reg << 6) | SMSC_MII_READ | SMSC_MII_BUSY;
460 	smsc_write_reg(sc, SMSC_MII_ADDR, addr);
461 
462 	if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0)
463 		smsc_warn_printf(sc, "MII read timeout\n");
464 
465 	smsc_read_reg(sc, SMSC_MII_DATA, &val);
466 	val = le32toh(val);
467 
468 done:
469 	if (!locked)
470 		SMSC_UNLOCK(sc);
471 
472 	return (val & 0xFFFF);
473 }
474 
475 /**
476  *	smsc_miibus_writereg - Writes a MII/MDIO register
477  *	@dev: usb ether device
478  *	@phy: the number of phy writing to
479  *	@reg: the register address
480  *	@val: the value to write
481  *
482  *	Attempts to write a phy register over the MII bus.
483  *
484  *	LOCKING:
485  *	Takes and releases the device mutex lock if not already held.
486  *
487  *	RETURNS:
488  *	Always returns 0 regardless of success or failure.
489  */
490 static int
491 smsc_miibus_writereg(device_t dev, int phy, int reg, int val)
492 {
493 	struct smsc_softc *sc = device_get_softc(dev);
494 	int locked;
495 	uint32_t addr;
496 
497 	if (sc->sc_phyno != phy)
498 		return (0);
499 
500 	locked = mtx_owned(&sc->sc_mtx);
501 	if (!locked)
502 		SMSC_LOCK(sc);
503 
504 	if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) {
505 		smsc_warn_printf(sc, "MII is busy\n");
506 		goto done;
507 	}
508 
509 	val = htole32(val);
510 	smsc_write_reg(sc, SMSC_MII_DATA, val);
511 
512 	addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE | SMSC_MII_BUSY;
513 	smsc_write_reg(sc, SMSC_MII_ADDR, addr);
514 
515 	if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0)
516 		smsc_warn_printf(sc, "MII write timeout\n");
517 
518 done:
519 	if (!locked)
520 		SMSC_UNLOCK(sc);
521 	return (0);
522 }
523 
524 
525 
526 /**
527  *	smsc_miibus_statchg - Called to detect phy status change
528  *	@dev: usb ether device
529  *
530  *	This function is called periodically by the system to poll for status
531  *	changes of the link.
532  *
533  *	LOCKING:
534  *	Takes and releases the device mutex lock if not already held.
535  */
536 static void
537 smsc_miibus_statchg(device_t dev)
538 {
539 	struct smsc_softc *sc = device_get_softc(dev);
540 	struct mii_data *mii = uether_getmii(&sc->sc_ue);
541 	struct ifnet *ifp;
542 	int locked;
543 	int err;
544 	uint32_t flow;
545 	uint32_t afc_cfg;
546 
547 	locked = mtx_owned(&sc->sc_mtx);
548 	if (!locked)
549 		SMSC_LOCK(sc);
550 
551 	ifp = uether_getifp(&sc->sc_ue);
552 	if (mii == NULL || ifp == NULL ||
553 	    (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
554 		goto done;
555 
556 	/* Use the MII status to determine link status */
557 	sc->sc_flags &= ~SMSC_FLAG_LINK;
558 	if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
559 	    (IFM_ACTIVE | IFM_AVALID)) {
560 		switch (IFM_SUBTYPE(mii->mii_media_active)) {
561 			case IFM_10_T:
562 			case IFM_100_TX:
563 				sc->sc_flags |= SMSC_FLAG_LINK;
564 				break;
565 			case IFM_1000_T:
566 				/* Gigabit ethernet not supported by chipset */
567 				break;
568 			default:
569 				break;
570 		}
571 	}
572 
573 	/* Lost link, do nothing. */
574 	if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) {
575 		smsc_dbg_printf(sc, "link flag not set\n");
576 		goto done;
577 	}
578 
579 	err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg);
580 	if (err) {
581 		smsc_warn_printf(sc, "failed to read initial AFC_CFG, error %d\n", err);
582 		goto done;
583 	}
584 
585 	/* Enable/disable full duplex operation and TX/RX pause */
586 	if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
587 		smsc_dbg_printf(sc, "full duplex operation\n");
588 		sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN;
589 		sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX;
590 
591 		if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
592 			flow = 0xffff0002;
593 		else
594 			flow = 0;
595 
596 		if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
597 			afc_cfg |= 0xf;
598 		else
599 			afc_cfg &= ~0xf;
600 
601 	} else {
602 		smsc_dbg_printf(sc, "half duplex operation\n");
603 		sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX;
604 		sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN;
605 
606 		flow = 0;
607 		afc_cfg |= 0xf;
608 	}
609 
610 	err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
611 	err += smsc_write_reg(sc, SMSC_FLOW, flow);
612 	err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg);
613 	if (err)
614 		smsc_warn_printf(sc, "media change failed, error %d\n", err);
615 
616 done:
617 	if (!locked)
618 		SMSC_UNLOCK(sc);
619 }
620 
621 /**
622  *	smsc_ifmedia_upd - Set media options
623  *	@ifp: interface pointer
624  *
625  *	Basically boilerplate code that simply calls the mii functions to set the
626  *	media options.
627  *
628  *	LOCKING:
629  *	The device lock must be held before this function is called.
630  *
631  *	RETURNS:
632  *	Returns 0 on success or a negative error code.
633  */
634 static int
635 smsc_ifmedia_upd(struct ifnet *ifp)
636 {
637 	struct smsc_softc *sc = ifp->if_softc;
638 	struct mii_data *mii = uether_getmii(&sc->sc_ue);
639 	struct mii_softc *miisc;
640 	int err;
641 
642 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
643 
644 	LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
645 		PHY_RESET(miisc);
646 	err = mii_mediachg(mii);
647 	return (err);
648 }
649 
650 /**
651  *	smsc_ifmedia_sts - Report current media status
652  *	@ifp: inet interface pointer
653  *	@ifmr: interface media request
654  *
655  *	Basically boilerplate code that simply calls the mii functions to get the
656  *	media status.
657  *
658  *	LOCKING:
659  *	Internally takes and releases the device lock.
660  */
661 static void
662 smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
663 {
664 	struct smsc_softc *sc = ifp->if_softc;
665 	struct mii_data *mii = uether_getmii(&sc->sc_ue);
666 
667 	SMSC_LOCK(sc);
668 	mii_pollstat(mii);
669 	ifmr->ifm_active = mii->mii_media_active;
670 	ifmr->ifm_status = mii->mii_media_status;
671 	SMSC_UNLOCK(sc);
672 }
673 
674 /**
675  *	smsc_hash - Calculate the hash of a mac address
676  *	@addr: The mac address to calculate the hash on
677  *
678  *	This function is used when configuring a range of m'cast mac addresses to
679  *	filter on.  The hash of the mac address is put in the device's mac hash
680  *	table.
681  *
682  *	RETURNS:
683  *	Returns a value from 0-63 value which is the hash of the mac address.
684  */
685 static inline uint32_t
686 smsc_hash(uint8_t addr[ETHER_ADDR_LEN])
687 {
688 	return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f;
689 }
690 
691 static u_int
692 smsc_hash_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
693 {
694 	uint32_t hash, *hashtbl = arg;
695 
696 	hash = smsc_hash(LLADDR(sdl));
697 	hashtbl[hash >> 5] |= 1 << (hash & 0x1F);
698 
699 	return (1);
700 }
701 
702 
703 /**
704  *	smsc_setmulti - Setup multicast
705  *	@ue: usb ethernet device context
706  *
707  *	Tells the device to either accept frames with a multicast mac address, a
708  *	select group of m'cast mac addresses or just the devices mac address.
709  *
710  *	LOCKING:
711  *	Should be called with the SMSC lock held.
712  */
713 static void
714 smsc_setmulti(struct usb_ether *ue)
715 {
716 	struct smsc_softc *sc = uether_getsc(ue);
717 	struct ifnet *ifp = uether_getifp(ue);
718 	uint32_t hashtbl[2] = { 0, 0 };
719 
720 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
721 
722 	if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
723 		smsc_dbg_printf(sc, "receive all multicast enabled\n");
724 		sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS;
725 		sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT;
726 
727 	} else {
728 		if (if_foreach_llmaddr(ifp, smsc_hash_maddr, &hashtbl) > 0) {
729 			/* We are filtering on a set of address so calculate
730 			 * hashes of each of the address and set the
731 			 * corresponding bits in the register.
732 			 */
733 			sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT;
734 			sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS);
735 		} else {
736 			/* Only receive packets with destination set to
737 			 * our mac address
738 			 */
739 			sc->sc_mac_csr &= ~(SMSC_MAC_CSR_MCPAS | SMSC_MAC_CSR_HPFILT);
740 		}
741 
742 		/* Debug */
743 		if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT)
744 			smsc_dbg_printf(sc, "receive select group of macs\n");
745 		else
746 			smsc_dbg_printf(sc, "receive own packets only\n");
747 	}
748 
749 	/* Write the hash table and mac control registers */
750 	smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]);
751 	smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]);
752 	smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
753 }
754 
755 
756 /**
757  *	smsc_setpromisc - Enables/disables promiscuous mode
758  *	@ue: usb ethernet device context
759  *
760  *	LOCKING:
761  *	Should be called with the SMSC lock held.
762  */
763 static void
764 smsc_setpromisc(struct usb_ether *ue)
765 {
766 	struct smsc_softc *sc = uether_getsc(ue);
767 	struct ifnet *ifp = uether_getifp(ue);
768 
769 	smsc_dbg_printf(sc, "promiscuous mode %sabled\n",
770 	                (ifp->if_flags & IFF_PROMISC) ? "en" : "dis");
771 
772 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
773 
774 	if (ifp->if_flags & IFF_PROMISC)
775 		sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS;
776 	else
777 		sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS;
778 
779 	smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
780 }
781 
782 
783 /**
784  *	smsc_sethwcsum - Enable or disable H/W UDP and TCP checksumming
785  *	@sc: driver soft context
786  *
787  *	LOCKING:
788  *	Should be called with the SMSC lock held.
789  *
790  *	RETURNS:
791  *	Returns 0 on success or a negative error code.
792  */
793 static int smsc_sethwcsum(struct smsc_softc *sc)
794 {
795 	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
796 	uint32_t val;
797 	int err;
798 
799 	if (!ifp)
800 		return (-EIO);
801 
802 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
803 
804 	err = smsc_read_reg(sc, SMSC_COE_CTRL, &val);
805 	if (err != 0) {
806 		smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", err);
807 		return (err);
808 	}
809 
810 	/* Enable/disable the Rx checksum */
811 	if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_RXCSUM)
812 		val |= SMSC_COE_CTRL_RX_EN;
813 	else
814 		val &= ~SMSC_COE_CTRL_RX_EN;
815 
816 	/* Enable/disable the Tx checksum (currently not supported) */
817 	if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_TXCSUM)
818 		val |= SMSC_COE_CTRL_TX_EN;
819 	else
820 		val &= ~SMSC_COE_CTRL_TX_EN;
821 
822 	err = smsc_write_reg(sc, SMSC_COE_CTRL, val);
823 	if (err != 0) {
824 		smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", err);
825 		return (err);
826 	}
827 
828 	return (0);
829 }
830 
831 /**
832  *	smsc_setmacaddress - Sets the mac address in the device
833  *	@sc: driver soft context
834  *	@addr: pointer to array contain at least 6 bytes of the mac
835  *
836  *	Writes the MAC address into the device, usually the MAC is programmed with
837  *	values from the EEPROM.
838  *
839  *	LOCKING:
840  *	Should be called with the SMSC lock held.
841  *
842  *	RETURNS:
843  *	Returns 0 on success or a negative error code.
844  */
845 static int
846 smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr)
847 {
848 	int err;
849 	uint32_t val;
850 
851 	smsc_dbg_printf(sc, "setting mac address to %02x:%02x:%02x:%02x:%02x:%02x\n",
852 	                addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
853 
854 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
855 
856 	val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
857 	if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0)
858 		goto done;
859 
860 	val = (addr[5] << 8) | addr[4];
861 	err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val);
862 
863 done:
864 	return (err);
865 }
866 
867 /**
868  *	smsc_reset - Reset the SMSC chip
869  *	@sc: device soft context
870  *
871  *	LOCKING:
872  *	Should be called with the SMSC lock held.
873  */
874 static void
875 smsc_reset(struct smsc_softc *sc)
876 {
877 	struct usb_config_descriptor *cd;
878 	usb_error_t err;
879 
880 	cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
881 
882 	err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx,
883 	                          cd->bConfigurationValue);
884 	if (err)
885 		smsc_warn_printf(sc, "reset failed (ignored)\n");
886 
887 	/* Wait a little while for the chip to get its brains in order. */
888 	uether_pause(&sc->sc_ue, hz / 100);
889 
890 	/* Reinitialize controller to achieve full reset. */
891 	smsc_chip_init(sc);
892 }
893 
894 
895 /**
896  *	smsc_init - Initialises the LAN95xx chip
897  *	@ue: USB ether interface
898  *
899  *	Called when the interface is brought up (i.e. ifconfig ue0 up), this
900  *	initialise the interface and the rx/tx pipes.
901  *
902  *	LOCKING:
903  *	Should be called with the SMSC lock held.
904  */
905 static void
906 smsc_init(struct usb_ether *ue)
907 {
908 	struct smsc_softc *sc = uether_getsc(ue);
909 	struct ifnet *ifp = uether_getifp(ue);
910 
911 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
912 
913 	if (smsc_setmacaddress(sc, IF_LLADDR(ifp)))
914 		smsc_dbg_printf(sc, "setting MAC address failed\n");
915 
916 	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
917 		return;
918 
919 	/* Cancel pending I/O */
920 	smsc_stop(ue);
921 
922 #if __FreeBSD_version <= 1000000
923 	/* On earlier versions this was the first place we could tell the system
924 	 * that we supported h/w csuming, however this is only called after the
925 	 * the interface has been brought up - not ideal.
926 	 */
927 	if (!(ifp->if_capabilities & IFCAP_RXCSUM)) {
928 		ifp->if_capabilities |= IFCAP_RXCSUM;
929 		ifp->if_capenable |= IFCAP_RXCSUM;
930 		ifp->if_hwassist = 0;
931 	}
932 
933 	/* TX checksuming is disabled for now
934 	ifp->if_capabilities |= IFCAP_TXCSUM;
935 	ifp->if_capenable |= IFCAP_TXCSUM;
936 	ifp->if_hwassist = CSUM_TCP | CSUM_UDP;
937 	*/
938 #endif
939 
940 	/* Reset the ethernet interface. */
941 	smsc_reset(sc);
942 
943 	/* Load the multicast filter. */
944 	smsc_setmulti(ue);
945 
946 	/* TCP/UDP checksum offload engines. */
947 	smsc_sethwcsum(sc);
948 
949 	usbd_xfer_set_stall(sc->sc_xfer[SMSC_BULK_DT_WR]);
950 
951 	/* Indicate we are up and running. */
952 	ifp->if_drv_flags |= IFF_DRV_RUNNING;
953 
954 	/* Switch to selected media. */
955 	smsc_ifmedia_upd(ifp);
956 	smsc_start(ue);
957 }
958 
959 /**
960  *	smsc_bulk_read_callback - Read callback used to process the USB URB
961  *	@xfer: the USB transfer
962  *	@error:
963  *
964  *	Reads the URB data which can contain one or more ethernet frames, the
965  *	frames are copyed into a mbuf and given to the system.
966  *
967  *	LOCKING:
968  *	No locking required, doesn't access internal driver settings.
969  */
970 static void
971 smsc_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
972 {
973 	struct smsc_softc *sc = usbd_xfer_softc(xfer);
974 	struct usb_ether *ue = &sc->sc_ue;
975 	struct ifnet *ifp = uether_getifp(ue);
976 	struct mbuf *m;
977 	struct usb_page_cache *pc;
978 	uint32_t rxhdr;
979 	uint16_t pktlen;
980 	int off;
981 	int actlen;
982 
983 	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
984 	smsc_dbg_printf(sc, "rx : actlen %d\n", actlen);
985 
986 	switch (USB_GET_STATE(xfer)) {
987 	case USB_ST_TRANSFERRED:
988 
989 		/* There is always a zero length frame after bringing the IF up */
990 		if (actlen < (sizeof(rxhdr) + ETHER_CRC_LEN))
991 			goto tr_setup;
992 
993 		/* There maybe multiple packets in the USB frame, each will have a
994 		 * header and each needs to have it's own mbuf allocated and populated
995 		 * for it.
996 		 */
997 		pc = usbd_xfer_get_frame(xfer, 0);
998 		off = 0;
999 
1000 		while (off < actlen) {
1001 
1002 			/* The frame header is always aligned on a 4 byte boundary */
1003 			off = ((off + 0x3) & ~0x3);
1004 
1005 			usbd_copy_out(pc, off, &rxhdr, sizeof(rxhdr));
1006 			off += (sizeof(rxhdr) + ETHER_ALIGN);
1007 			rxhdr = le32toh(rxhdr);
1008 
1009 			pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr);
1010 
1011 			smsc_dbg_printf(sc, "rx : rxhdr 0x%08x : pktlen %d : actlen %d : "
1012 			                "off %d\n", rxhdr, pktlen, actlen, off);
1013 
1014 
1015 			if (rxhdr & SMSC_RX_STAT_ERROR) {
1016 				smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr);
1017 				if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1018 				if (rxhdr & SMSC_RX_STAT_COLLISION)
1019 					if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1);
1020 			} else {
1021 
1022 				/* Check if the ethernet frame is too big or too small */
1023 				if ((pktlen < ETHER_HDR_LEN) || (pktlen > (actlen - off)))
1024 					goto tr_setup;
1025 
1026 				/* Create a new mbuf to store the packet in */
1027 				m = uether_newbuf();
1028 				if (m == NULL) {
1029 					smsc_warn_printf(sc, "failed to create new mbuf\n");
1030 					if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
1031 					goto tr_setup;
1032 				}
1033 
1034 				usbd_copy_out(pc, off, mtod(m, uint8_t *), pktlen);
1035 
1036 				/* Check if RX TCP/UDP checksumming is being offloaded */
1037 				if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) {
1038 
1039 					struct ether_header *eh;
1040 
1041 					eh = mtod(m, struct ether_header *);
1042 
1043 					/* Remove the extra 2 bytes of the csum */
1044 					pktlen -= 2;
1045 
1046 					/* The checksum appears to be simplistically calculated
1047 					 * over the udp/tcp header and data up to the end of the
1048 					 * eth frame.  Which means if the eth frame is padded
1049 					 * the csum calculation is incorrectly performed over
1050 					 * the padding bytes as well. Therefore to be safe we
1051 					 * ignore the H/W csum on frames less than or equal to
1052 					 * 64 bytes.
1053 					 *
1054 					 * Ignore H/W csum for non-IPv4 packets.
1055 					 */
1056 					if ((be16toh(eh->ether_type) == ETHERTYPE_IP) &&
1057 					    (pktlen > ETHER_MIN_LEN)) {
1058 						struct ip *ip;
1059 
1060 						ip = (struct ip *)(eh + 1);
1061 						if ((ip->ip_v == IPVERSION) &&
1062 						    ((ip->ip_p == IPPROTO_TCP) ||
1063 						     (ip->ip_p == IPPROTO_UDP))) {
1064 							/* Indicate the UDP/TCP csum has been calculated */
1065 							m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
1066 
1067 							/* Copy the TCP/UDP checksum from the last 2 bytes
1068 							 * of the transfer and put in the csum_data field.
1069 							 */
1070 							usbd_copy_out(pc, (off + pktlen),
1071 							              &m->m_pkthdr.csum_data, 2);
1072 
1073 							/* The data is copied in network order, but the
1074 							 * csum algorithm in the kernel expects it to be
1075 							 * in host network order.
1076 							 */
1077 							m->m_pkthdr.csum_data = ntohs(m->m_pkthdr.csum_data);
1078 
1079 							smsc_dbg_printf(sc, "RX checksum offloaded (0x%04x)\n",
1080 							                m->m_pkthdr.csum_data);
1081 						}
1082 					}
1083 
1084 					/* Need to adjust the offset as well or we'll be off
1085 					 * by 2 because the csum is removed from the packet
1086 					 * length.
1087 					 */
1088 					off += 2;
1089 				}
1090 
1091 				/* Finally enqueue the mbuf on the receive queue */
1092 				/* Remove 4 trailing bytes */
1093 				if (pktlen < (4 + ETHER_HDR_LEN)) {
1094 					m_freem(m);
1095 					goto tr_setup;
1096 				}
1097 				uether_rxmbuf(ue, m, pktlen - 4);
1098 			}
1099 
1100 			/* Update the offset to move to the next potential packet */
1101 			off += pktlen;
1102 		}
1103 
1104 		/* FALLTHROUGH */
1105 
1106 	case USB_ST_SETUP:
1107 tr_setup:
1108 		usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1109 		usbd_transfer_submit(xfer);
1110 		uether_rxflush(ue);
1111 		return;
1112 
1113 	default:
1114 		if (error != USB_ERR_CANCELLED) {
1115 			smsc_warn_printf(sc, "bulk read error, %s\n", usbd_errstr(error));
1116 			usbd_xfer_set_stall(xfer);
1117 			goto tr_setup;
1118 		}
1119 		return;
1120 	}
1121 }
1122 
1123 /**
1124  *	smsc_bulk_write_callback - Write callback used to send ethernet frame(s)
1125  *	@xfer: the USB transfer
1126  *	@error: error code if the transfers is in an errored state
1127  *
1128  *	The main write function that pulls ethernet frames off the queue and sends
1129  *	them out.
1130  *
1131  *	LOCKING:
1132  *
1133  */
1134 static void
1135 smsc_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
1136 {
1137 	struct smsc_softc *sc = usbd_xfer_softc(xfer);
1138 	struct ifnet *ifp = uether_getifp(&sc->sc_ue);
1139 	struct usb_page_cache *pc;
1140 	struct mbuf *m;
1141 	uint32_t txhdr;
1142 	uint32_t frm_len = 0;
1143 	int nframes;
1144 
1145 	switch (USB_GET_STATE(xfer)) {
1146 	case USB_ST_TRANSFERRED:
1147 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1148 		/* FALLTHROUGH */
1149 
1150 	case USB_ST_SETUP:
1151 tr_setup:
1152 		if ((sc->sc_flags & SMSC_FLAG_LINK) == 0 ||
1153 			(ifp->if_drv_flags & IFF_DRV_OACTIVE) != 0) {
1154 			/* Don't send anything if there is no link or controller is busy. */
1155 			return;
1156 		}
1157 
1158 		for (nframes = 0; nframes < 16 &&
1159 		    !IFQ_DRV_IS_EMPTY(&ifp->if_snd); nframes++) {
1160 			IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1161 			if (m == NULL)
1162 				break;
1163 			usbd_xfer_set_frame_offset(xfer, nframes * MCLBYTES,
1164 			    nframes);
1165 			frm_len = 0;
1166 			pc = usbd_xfer_get_frame(xfer, nframes);
1167 
1168 			/* Each frame is prefixed with two 32-bit values describing the
1169 			 * length of the packet and buffer.
1170 			 */
1171 			txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) |
1172 					SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG;
1173 			txhdr = htole32(txhdr);
1174 			usbd_copy_in(pc, 0, &txhdr, sizeof(txhdr));
1175 
1176 			txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len);
1177 			txhdr = htole32(txhdr);
1178 			usbd_copy_in(pc, 4, &txhdr, sizeof(txhdr));
1179 
1180 			frm_len += 8;
1181 
1182 			/* Next copy in the actual packet */
1183 			usbd_m_copy_in(pc, frm_len, m, 0, m->m_pkthdr.len);
1184 			frm_len += m->m_pkthdr.len;
1185 
1186 			if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
1187 
1188 			/* If there's a BPF listener, bounce a copy of this frame to him */
1189 			BPF_MTAP(ifp, m);
1190 
1191 			m_freem(m);
1192 
1193 			/* Set frame length. */
1194 			usbd_xfer_set_frame_len(xfer, nframes, frm_len);
1195 		}
1196 		if (nframes != 0) {
1197 			usbd_xfer_set_frames(xfer, nframes);
1198 			usbd_transfer_submit(xfer);
1199 			ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1200 		}
1201 		return;
1202 
1203 	default:
1204 		if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1205 		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1206 
1207 		if (error != USB_ERR_CANCELLED) {
1208 			smsc_err_printf(sc, "usb error on tx: %s\n", usbd_errstr(error));
1209 			usbd_xfer_set_stall(xfer);
1210 			goto tr_setup;
1211 		}
1212 		return;
1213 	}
1214 }
1215 
1216 /**
1217  *	smsc_tick - Called periodically to monitor the state of the LAN95xx chip
1218  *	@ue: USB ether interface
1219  *
1220  *	Simply calls the mii status functions to check the state of the link.
1221  *
1222  *	LOCKING:
1223  *	Should be called with the SMSC lock held.
1224  */
1225 static void
1226 smsc_tick(struct usb_ether *ue)
1227 {
1228 	struct smsc_softc *sc = uether_getsc(ue);
1229 	struct mii_data *mii = uether_getmii(&sc->sc_ue);
1230 
1231 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
1232 
1233 	mii_tick(mii);
1234 	if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) {
1235 		smsc_miibus_statchg(ue->ue_dev);
1236 		if ((sc->sc_flags & SMSC_FLAG_LINK) != 0)
1237 			smsc_start(ue);
1238 	}
1239 }
1240 
1241 /**
1242  *	smsc_start - Starts communication with the LAN95xx chip
1243  *	@ue: USB ether interface
1244  *
1245  *
1246  *
1247  */
1248 static void
1249 smsc_start(struct usb_ether *ue)
1250 {
1251 	struct smsc_softc *sc = uether_getsc(ue);
1252 
1253 	/*
1254 	 * start the USB transfers, if not already started:
1255 	 */
1256 	usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_RD]);
1257 	usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_WR]);
1258 }
1259 
1260 /**
1261  *	smsc_stop - Stops communication with the LAN95xx chip
1262  *	@ue: USB ether interface
1263  *
1264  *
1265  *
1266  */
1267 static void
1268 smsc_stop(struct usb_ether *ue)
1269 {
1270 	struct smsc_softc *sc = uether_getsc(ue);
1271 	struct ifnet *ifp = uether_getifp(ue);
1272 
1273 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
1274 
1275 	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1276 	sc->sc_flags &= ~SMSC_FLAG_LINK;
1277 
1278 	/*
1279 	 * stop all the transfers, if not already stopped:
1280 	 */
1281 	usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_WR]);
1282 	usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_RD]);
1283 }
1284 
1285 /**
1286  *	smsc_phy_init - Initialises the in-built SMSC phy
1287  *	@sc: driver soft context
1288  *
1289  *	Resets the PHY part of the chip and then initialises it to default
1290  *	values.  The 'link down' and 'auto-negotiation complete' interrupts
1291  *	from the PHY are also enabled, however we don't monitor the interrupt
1292  *	endpoints for the moment.
1293  *
1294  *	RETURNS:
1295  *	Returns 0 on success or EIO if failed to reset the PHY.
1296  */
1297 static int
1298 smsc_phy_init(struct smsc_softc *sc)
1299 {
1300 	int bmcr;
1301 	usb_ticks_t start_ticks;
1302 	const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
1303 
1304 	SMSC_LOCK_ASSERT(sc, MA_OWNED);
1305 
1306 	/* Reset phy and wait for reset to complete */
1307 	smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, BMCR_RESET);
1308 
1309 	start_ticks = ticks;
1310 	do {
1311 		uether_pause(&sc->sc_ue, hz / 100);
1312 		bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR);
1313 	} while ((bmcr & BMCR_RESET) && ((ticks - start_ticks) < max_ticks));
1314 
1315 	if (((usb_ticks_t)(ticks - start_ticks)) >= max_ticks) {
1316 		smsc_err_printf(sc, "PHY reset timed-out");
1317 		return (EIO);
1318 	}
1319 
1320 	smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_ANAR,
1321 	                     ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD |  /* all modes */
1322 	                     ANAR_CSMA |
1323 	                     ANAR_FC |
1324 	                     ANAR_PAUSE_ASYM);
1325 
1326 	/* Setup the phy to interrupt when the link goes down or autoneg completes */
1327 	smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_STAT);
1328 	smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_MASK,
1329 	                     (SMSC_PHY_INTR_ANEG_COMP | SMSC_PHY_INTR_LINK_DOWN));
1330 
1331 	/* Restart auto-negotation */
1332 	bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR);
1333 	bmcr |= BMCR_STARTNEG;
1334 	smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, bmcr);
1335 
1336 	return (0);
1337 }
1338 
1339 
1340 /**
1341  *	smsc_chip_init - Initialises the chip after power on
1342  *	@sc: driver soft context
1343  *
1344  *	This initialisation sequence is modelled on the procedure in the Linux
1345  *	driver.
1346  *
1347  *	RETURNS:
1348  *	Returns 0 on success or an error code on failure.
1349  */
1350 static int
1351 smsc_chip_init(struct smsc_softc *sc)
1352 {
1353 	int err;
1354 	int locked;
1355 	uint32_t reg_val;
1356 	int burst_cap;
1357 
1358 	locked = mtx_owned(&sc->sc_mtx);
1359 	if (!locked)
1360 		SMSC_LOCK(sc);
1361 
1362 	/* Enter H/W config mode */
1363 	smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST);
1364 
1365 	if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST)) != 0) {
1366 		smsc_warn_printf(sc, "timed-out waiting for reset to complete\n");
1367 		goto init_failed;
1368 	}
1369 
1370 	/* Reset the PHY */
1371 	smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST);
1372 
1373 	if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST)) != 0) {
1374 		smsc_warn_printf(sc, "timed-out waiting for phy reset to complete\n");
1375 		goto init_failed;
1376 	}
1377 
1378 	/* Set the mac address */
1379 	if ((err = smsc_setmacaddress(sc, sc->sc_ue.ue_eaddr)) != 0) {
1380 		smsc_warn_printf(sc, "failed to set the MAC address\n");
1381 		goto init_failed;
1382 	}
1383 
1384 	/* Don't know what the HW_CFG_BIR bit is, but following the reset sequence
1385 	 * as used in the Linux driver.
1386 	 */
1387 	if ((err = smsc_read_reg(sc, SMSC_HW_CFG, &reg_val)) != 0) {
1388 		smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err);
1389 		goto init_failed;
1390 	}
1391 	reg_val |= SMSC_HW_CFG_BIR;
1392 	smsc_write_reg(sc, SMSC_HW_CFG, reg_val);
1393 
1394 	/* There is a so called 'turbo mode' that the linux driver supports, it
1395 	 * seems to allow you to jam multiple frames per Rx transaction.  By default
1396 	 * this driver supports that and therefore allows multiple frames per URB.
1397 	 *
1398 	 * The xfer buffer size needs to reflect this as well, therefore based on
1399 	 * the calculations in the Linux driver the RX bufsize is set to 18944,
1400 	 *     bufsz = (16 * 1024 + 5 * 512)
1401 	 *
1402 	 * Burst capability is the number of URBs that can be in a burst of data/
1403 	 * ethernet frames.
1404 	 */
1405 	if (usbd_get_speed(sc->sc_ue.ue_udev) == USB_SPEED_HIGH)
1406 		burst_cap = 37;
1407 	else
1408 		burst_cap = 128;
1409 
1410 	smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap);
1411 
1412 	/* Set the default bulk in delay (magic value from Linux driver) */
1413 	smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000);
1414 
1415 
1416 
1417 	/*
1418 	 * Initialise the RX interface
1419 	 */
1420 	if ((err = smsc_read_reg(sc, SMSC_HW_CFG, &reg_val)) < 0) {
1421 		smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", err);
1422 		goto init_failed;
1423 	}
1424 
1425 	/* Adjust the packet offset in the buffer (designed to try and align IP
1426 	 * header on 4 byte boundary)
1427 	 */
1428 	reg_val &= ~SMSC_HW_CFG_RXDOFF;
1429 	reg_val |= (ETHER_ALIGN << 9) & SMSC_HW_CFG_RXDOFF;
1430 
1431 	/* The following setings are used for 'turbo mode', a.k.a multiple frames
1432 	 * per Rx transaction (again info taken form Linux driver).
1433 	 */
1434 	reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE);
1435 
1436 	smsc_write_reg(sc, SMSC_HW_CFG, reg_val);
1437 
1438 	/* Clear the status register ? */
1439 	smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff);
1440 
1441 	/* Read and display the revision register */
1442 	if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) {
1443 		smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err);
1444 		goto init_failed;
1445 	}
1446 
1447 	device_printf(sc->sc_ue.ue_dev, "chip 0x%04lx, rev. %04lx\n",
1448 	    (sc->sc_rev_id & SMSC_ID_REV_CHIP_ID_MASK) >> 16,
1449 	    (sc->sc_rev_id & SMSC_ID_REV_CHIP_REV_MASK));
1450 
1451 	/* GPIO/LED setup */
1452 	reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED |
1453 	          SMSC_LED_GPIO_CFG_FDX_LED;
1454 	smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val);
1455 
1456 	/*
1457 	 * Initialise the TX interface
1458 	 */
1459 	smsc_write_reg(sc, SMSC_FLOW, 0);
1460 
1461 	smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT);
1462 
1463 	/* Read the current MAC configuration */
1464 	if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) {
1465 		smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err);
1466 		goto init_failed;
1467 	}
1468 
1469 	/* Vlan */
1470 	smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN);
1471 
1472 	/*
1473 	 * Initialise the PHY
1474 	 */
1475 	if ((err = smsc_phy_init(sc)) != 0)
1476 		goto init_failed;
1477 
1478 
1479 	/*
1480 	 * Start TX
1481 	 */
1482 	sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN;
1483 	smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
1484 	smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON);
1485 
1486 	/*
1487 	 * Start RX
1488 	 */
1489 	sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN;
1490 	smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
1491 
1492 	if (!locked)
1493 		SMSC_UNLOCK(sc);
1494 
1495 	return (0);
1496 
1497 init_failed:
1498 	if (!locked)
1499 		SMSC_UNLOCK(sc);
1500 
1501 	smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err);
1502 	return (err);
1503 }
1504 
1505 
1506 /**
1507  *	smsc_ioctl - ioctl function for the device
1508  *	@ifp: interface pointer
1509  *	@cmd: the ioctl command
1510  *	@data: data passed in the ioctl call, typically a pointer to struct ifreq.
1511  *
1512  *	The ioctl routine is overridden to detect change requests for the H/W
1513  *	checksum capabilities.
1514  *
1515  *	RETURNS:
1516  *	0 on success and an error code on failure.
1517  */
1518 static int
1519 smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1520 {
1521 	struct usb_ether *ue = ifp->if_softc;
1522 	struct smsc_softc *sc;
1523 	struct ifreq *ifr;
1524 	int rc;
1525 	int mask;
1526 	int reinit;
1527 
1528 	if (cmd == SIOCSIFCAP) {
1529 
1530 		sc = uether_getsc(ue);
1531 		ifr = (struct ifreq *)data;
1532 
1533 		SMSC_LOCK(sc);
1534 
1535 		rc = 0;
1536 		reinit = 0;
1537 
1538 		mask = ifr->ifr_reqcap ^ ifp->if_capenable;
1539 
1540 		/* Modify the RX CSUM enable bits */
1541 		if ((mask & IFCAP_RXCSUM) != 0 &&
1542 		    (ifp->if_capabilities & IFCAP_RXCSUM) != 0) {
1543 			ifp->if_capenable ^= IFCAP_RXCSUM;
1544 
1545 			if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1546 				ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1547 				reinit = 1;
1548 			}
1549 		}
1550 
1551 		SMSC_UNLOCK(sc);
1552 		if (reinit)
1553 #if __FreeBSD_version > 1000000
1554 			uether_init(ue);
1555 #else
1556 			ifp->if_init(ue);
1557 #endif
1558 
1559 	} else {
1560 		rc = uether_ioctl(ifp, cmd, data);
1561 	}
1562 
1563 	return (rc);
1564 }
1565 
1566 /**
1567  *	smsc_attach_post - Called after the driver attached to the USB interface
1568  *	@ue: the USB ethernet device
1569  *
1570  *	This is where the chip is intialised for the first time.  This is different
1571  *	from the smsc_init() function in that that one is designed to setup the
1572  *	H/W to match the UE settings and can be called after a reset.
1573  *
1574  *
1575  */
1576 static void
1577 smsc_attach_post(struct usb_ether *ue)
1578 {
1579 	struct smsc_softc *sc = uether_getsc(ue);
1580 	uint32_t mac_h, mac_l;
1581 	int err;
1582 
1583 	smsc_dbg_printf(sc, "smsc_attach_post\n");
1584 
1585 	/* Setup some of the basics */
1586 	sc->sc_phyno = 1;
1587 
1588 
1589 	/* Attempt to get the mac address, if an EEPROM is not attached this
1590 	 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC
1591 	 * address based on urandom.
1592 	 */
1593 	memset(sc->sc_ue.ue_eaddr, 0xff, ETHER_ADDR_LEN);
1594 
1595 	/* Check if there is already a MAC address in the register */
1596 	if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) &&
1597 	    (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) {
1598 		sc->sc_ue.ue_eaddr[5] = (uint8_t)((mac_h >> 8) & 0xff);
1599 		sc->sc_ue.ue_eaddr[4] = (uint8_t)((mac_h) & 0xff);
1600 		sc->sc_ue.ue_eaddr[3] = (uint8_t)((mac_l >> 24) & 0xff);
1601 		sc->sc_ue.ue_eaddr[2] = (uint8_t)((mac_l >> 16) & 0xff);
1602 		sc->sc_ue.ue_eaddr[1] = (uint8_t)((mac_l >> 8) & 0xff);
1603 		sc->sc_ue.ue_eaddr[0] = (uint8_t)((mac_l) & 0xff);
1604 	}
1605 
1606 	/* MAC address is not set so try to read from EEPROM, if that fails generate
1607 	 * a random MAC address.
1608 	 */
1609 	if (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)) {
1610 
1611 		err = smsc_eeprom_read(sc, 0x01, sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN);
1612 #ifdef FDT
1613 		if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)))
1614 			err = usb_fdt_get_mac_addr(sc->sc_ue.ue_dev, &sc->sc_ue);
1615 #endif
1616 		if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) {
1617 			read_random(sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN);
1618 			sc->sc_ue.ue_eaddr[0] &= ~0x01;     /* unicast */
1619 			sc->sc_ue.ue_eaddr[0] |=  0x02;     /* locally administered */
1620 		}
1621 	}
1622 
1623 	/* Initialise the chip for the first time */
1624 	smsc_chip_init(sc);
1625 }
1626 
1627 
1628 /**
1629  *	smsc_attach_post_sub - Called after the driver attached to the USB interface
1630  *	@ue: the USB ethernet device
1631  *
1632  *	Most of this is boilerplate code and copied from the base USB ethernet
1633  *	driver.  It has been overriden so that we can indicate to the system that
1634  *	the chip supports H/W checksumming.
1635  *
1636  *	RETURNS:
1637  *	Returns 0 on success or a negative error code.
1638  */
1639 #if __FreeBSD_version > 1000000
1640 static int
1641 smsc_attach_post_sub(struct usb_ether *ue)
1642 {
1643 	struct smsc_softc *sc;
1644 	struct ifnet *ifp;
1645 	int error;
1646 
1647 	sc = uether_getsc(ue);
1648 	ifp = ue->ue_ifp;
1649 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1650 	ifp->if_start = uether_start;
1651 	ifp->if_ioctl = smsc_ioctl;
1652 	ifp->if_init = uether_init;
1653 	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
1654 	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
1655 	IFQ_SET_READY(&ifp->if_snd);
1656 
1657 	/* The chip supports TCP/UDP checksum offloading on TX and RX paths, however
1658 	 * currently only RX checksum is supported in the driver (see top of file).
1659 	 */
1660 	ifp->if_capabilities |= IFCAP_RXCSUM | IFCAP_VLAN_MTU;
1661 	ifp->if_hwassist = 0;
1662 
1663 	/* TX checksuming is disabled (for now?)
1664 	ifp->if_capabilities |= IFCAP_TXCSUM;
1665 	ifp->if_capenable |= IFCAP_TXCSUM;
1666 	ifp->if_hwassist = CSUM_TCP | CSUM_UDP;
1667 	*/
1668 
1669 	ifp->if_capenable = ifp->if_capabilities;
1670 
1671 	mtx_lock(&Giant);
1672 	error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp,
1673 	    uether_ifmedia_upd, ue->ue_methods->ue_mii_sts,
1674 	    BMSR_DEFCAPMASK, sc->sc_phyno, MII_OFFSET_ANY, 0);
1675 	mtx_unlock(&Giant);
1676 
1677 	return (error);
1678 }
1679 #endif /* __FreeBSD_version > 1000000 */
1680 
1681 
1682 /**
1683  *	smsc_probe - Probe the interface.
1684  *	@dev: smsc device handle
1685  *
1686  *	Checks if the device is a match for this driver.
1687  *
1688  *	RETURNS:
1689  *	Returns 0 on success or an error code on failure.
1690  */
1691 static int
1692 smsc_probe(device_t dev)
1693 {
1694 	struct usb_attach_arg *uaa = device_get_ivars(dev);
1695 
1696 	if (uaa->usb_mode != USB_MODE_HOST)
1697 		return (ENXIO);
1698 	if (uaa->info.bConfigIndex != SMSC_CONFIG_INDEX)
1699 		return (ENXIO);
1700 	if (uaa->info.bIfaceIndex != SMSC_IFACE_IDX)
1701 		return (ENXIO);
1702 
1703 	return (usbd_lookup_id_by_uaa(smsc_devs, sizeof(smsc_devs), uaa));
1704 }
1705 
1706 
1707 /**
1708  *	smsc_attach - Attach the interface.
1709  *	@dev: smsc device handle
1710  *
1711  *	Allocate softc structures, do ifmedia setup and ethernet/BPF attach.
1712  *
1713  *	RETURNS:
1714  *	Returns 0 on success or a negative error code.
1715  */
1716 static int
1717 smsc_attach(device_t dev)
1718 {
1719 	struct usb_attach_arg *uaa = device_get_ivars(dev);
1720 	struct smsc_softc *sc = device_get_softc(dev);
1721 	struct usb_ether *ue = &sc->sc_ue;
1722 	uint8_t iface_index;
1723 	int err;
1724 
1725 	sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
1726 
1727 	device_set_usb_desc(dev);
1728 
1729 	mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
1730 
1731 	/* Setup the endpoints for the SMSC LAN95xx device(s) */
1732 	iface_index = SMSC_IFACE_IDX;
1733 	err = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
1734 	                          smsc_config, SMSC_N_TRANSFER, sc, &sc->sc_mtx);
1735 	if (err) {
1736 		device_printf(dev, "error: allocating USB transfers failed\n");
1737 		goto detach;
1738 	}
1739 
1740 	ue->ue_sc = sc;
1741 	ue->ue_dev = dev;
1742 	ue->ue_udev = uaa->device;
1743 	ue->ue_mtx = &sc->sc_mtx;
1744 	ue->ue_methods = &smsc_ue_methods;
1745 
1746 	err = uether_ifattach(ue);
1747 	if (err) {
1748 		device_printf(dev, "error: could not attach interface\n");
1749 		goto detach;
1750 	}
1751 	return (0);			/* success */
1752 
1753 detach:
1754 	smsc_detach(dev);
1755 	return (ENXIO);		/* failure */
1756 }
1757 
1758 /**
1759  *	smsc_detach - Detach the interface.
1760  *	@dev: smsc device handle
1761  *
1762  *	RETURNS:
1763  *	Returns 0.
1764  */
1765 static int
1766 smsc_detach(device_t dev)
1767 {
1768 	struct smsc_softc *sc = device_get_softc(dev);
1769 	struct usb_ether *ue = &sc->sc_ue;
1770 
1771 	usbd_transfer_unsetup(sc->sc_xfer, SMSC_N_TRANSFER);
1772 	uether_ifdetach(ue);
1773 	mtx_destroy(&sc->sc_mtx);
1774 
1775 	return (0);
1776 }
1777 
1778 static device_method_t smsc_methods[] = {
1779 	/* Device interface */
1780 	DEVMETHOD(device_probe, smsc_probe),
1781 	DEVMETHOD(device_attach, smsc_attach),
1782 	DEVMETHOD(device_detach, smsc_detach),
1783 
1784 	/* bus interface */
1785 	DEVMETHOD(bus_print_child, bus_generic_print_child),
1786 	DEVMETHOD(bus_driver_added, bus_generic_driver_added),
1787 
1788 	/* MII interface */
1789 	DEVMETHOD(miibus_readreg, smsc_miibus_readreg),
1790 	DEVMETHOD(miibus_writereg, smsc_miibus_writereg),
1791 	DEVMETHOD(miibus_statchg, smsc_miibus_statchg),
1792 
1793 	DEVMETHOD_END
1794 };
1795 
1796 static driver_t smsc_driver = {
1797 	.name = "smsc",
1798 	.methods = smsc_methods,
1799 	.size = sizeof(struct smsc_softc),
1800 };
1801 
1802 static devclass_t smsc_devclass;
1803 
1804 DRIVER_MODULE(smsc, uhub, smsc_driver, smsc_devclass, NULL, 0);
1805 DRIVER_MODULE(miibus, smsc, miibus_driver, miibus_devclass, 0, 0);
1806 MODULE_DEPEND(smsc, uether, 1, 1, 1);
1807 MODULE_DEPEND(smsc, usb, 1, 1, 1);
1808 MODULE_DEPEND(smsc, ether, 1, 1, 1);
1809 MODULE_DEPEND(smsc, miibus, 1, 1, 1);
1810 MODULE_VERSION(smsc, 1);
1811 USB_PNP_HOST_INFO(smsc_devs);
1812