1 /*-
2 * Copyright (c) 2013-2014 Kevin Lo
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 /* $FreeBSD: head/sys/dev/usb/net/if_axge.c 276701 2015-01-05 15:04:17Z hselasky $ */
28
29 /*
30 * ASIX Electronics AX88178A/AX88179 USB 2.0/3.0 gigabit ethernet driver.
31 */
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/bus.h>
36 #include <sys/condvar.h>
37 #include <sys/kernel.h>
38 #include <sys/lock.h>
39 #include <sys/malloc.h> /* for M_NOWAIT */
40 #include <sys/module.h>
41 #include <sys/socket.h>
42 #include <sys/sysctl.h>
43 #include <sys/unistd.h>
44
45 #include <net/if.h>
46 #include <net/if_var.h>
47 #include <net/ifq_var.h>
48
49 #include <bus/u4b/usb.h>
50 #include <bus/u4b/usbdi.h>
51 #include <bus/u4b/usbdi_util.h>
52 #include "usbdevs.h"
53
54 #define USB_DEBUG_VAR axge_debug
55 #include <bus/u4b/usb_debug.h>
56 #include <bus/u4b/usb_process.h>
57
58 #include <bus/u4b/net/usb_ethernet.h>
59 #include <bus/u4b/net/if_axgereg.h>
60
61 /*
62 * Various supported device vendors/products.
63 */
64
65 static const STRUCT_USB_HOST_ID axge_devs[] = {
66 #define AXGE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
67 AXGE_DEV(ASIX, AX88178A),
68 AXGE_DEV(ASIX, AX88179),
69 AXGE_DEV(DLINK, DUB1312),
70 AXGE_DEV(SITECOMEU, LN032),
71 #undef AXGE_DEV
72 };
73
74 static const struct {
75 uint8_t ctrl;
76 uint8_t timer_l;
77 uint8_t timer_h;
78 uint8_t size;
79 uint8_t ifg;
80 } __packed axge_bulk_size[] = {
81 { 7, 0x4f, 0x00, 0x12, 0xff },
82 { 7, 0x20, 0x03, 0x16, 0xff },
83 { 7, 0xae, 0x07, 0x18, 0xff },
84 { 7, 0xcc, 0x4c, 0x18, 0x08 }
85 };
86
87 /* prototypes */
88
89 static device_probe_t axge_probe;
90 static device_attach_t axge_attach;
91 static device_detach_t axge_detach;
92
93 static usb_callback_t axge_bulk_read_callback;
94 static usb_callback_t axge_bulk_write_callback;
95
96 static miibus_readreg_t axge_miibus_readreg;
97 static miibus_writereg_t axge_miibus_writereg;
98 static miibus_statchg_t axge_miibus_statchg;
99
100 static uether_fn_t axge_attach_post;
101 static uether_fn_t axge_init;
102 static uether_fn_t axge_stop;
103 static uether_fn_t axge_start;
104 static uether_fn_t axge_tick;
105 static uether_fn_t axge_setmulti;
106 static uether_fn_t axge_setpromisc;
107
108 static int axge_read_mem(struct axge_softc *, uint8_t, uint16_t,
109 uint16_t, void *, int);
110 static void axge_write_mem(struct axge_softc *, uint8_t, uint16_t,
111 uint16_t, void *, int);
112 static uint8_t axge_read_cmd_1(struct axge_softc *, uint8_t, uint16_t);
113 static uint16_t axge_read_cmd_2(struct axge_softc *, uint8_t, uint16_t,
114 uint16_t);
115 static void axge_write_cmd_1(struct axge_softc *, uint8_t, uint16_t,
116 uint8_t);
117 static void axge_write_cmd_2(struct axge_softc *, uint8_t, uint16_t,
118 uint16_t, uint16_t);
119 static void axge_chip_init(struct axge_softc *);
120 static void axge_reset(struct axge_softc *);
121
122 static int axge_attach_post_sub(struct usb_ether *);
123 static int axge_ifmedia_upd(struct ifnet *);
124 static void axge_ifmedia_sts(struct ifnet *, struct ifmediareq *);
125 static int axge_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
126 static void axge_rx_frame(struct usb_ether *, struct usb_page_cache *, int);
127 static void axge_rxeof(struct usb_ether *, struct usb_page_cache *,
128 unsigned int, unsigned int, uint32_t);
129 static void axge_csum_cfg(struct usb_ether *);
130
131 #define AXGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
132
133 #ifdef USB_DEBUG
134 static int axge_debug = 0;
135
136 static SYSCTL_NODE(_hw_usb, OID_AUTO, axge, CTLFLAG_RW, 0, "USB axge");
137 SYSCTL_INT(_hw_usb_axge, OID_AUTO, debug, CTLFLAG_RW, &axge_debug, 0,
138 "Debug level");
139 #endif
140
141 static const struct usb_config axge_config[AXGE_N_TRANSFER] = {
142 [AXGE_BULK_DT_WR] = {
143 .type = UE_BULK,
144 .endpoint = UE_ADDR_ANY,
145 .direction = UE_DIR_OUT,
146 .frames = 16,
147 .bufsize = 16 * MCLBYTES,
148 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
149 .callback = axge_bulk_write_callback,
150 .timeout = 10000, /* 10 seconds */
151 },
152 [AXGE_BULK_DT_RD] = {
153 .type = UE_BULK,
154 .endpoint = UE_ADDR_ANY,
155 .direction = UE_DIR_IN,
156 .bufsize = 65536,
157 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
158 .callback = axge_bulk_read_callback,
159 .timeout = 0, /* no timeout */
160 },
161 };
162
163 static device_method_t axge_methods[] = {
164 /* Device interface. */
165 DEVMETHOD(device_probe, axge_probe),
166 DEVMETHOD(device_attach, axge_attach),
167 DEVMETHOD(device_detach, axge_detach),
168
169 /* MII interface. */
170 DEVMETHOD(miibus_readreg, axge_miibus_readreg),
171 DEVMETHOD(miibus_writereg, axge_miibus_writereg),
172 DEVMETHOD(miibus_statchg, axge_miibus_statchg),
173
174 DEVMETHOD_END
175 };
176
177 static driver_t axge_driver = {
178 .name = "axge",
179 .methods = axge_methods,
180 .size = sizeof(struct axge_softc),
181 };
182
183 static devclass_t axge_devclass;
184
185 DRIVER_MODULE(axge, uhub, axge_driver, axge_devclass, NULL, NULL);
186 DRIVER_MODULE(miibus, axge, miibus_driver, miibus_devclass, NULL, NULL);
187 MODULE_DEPEND(axge, uether, 1, 1, 1);
188 MODULE_DEPEND(axge, usb, 1, 1, 1);
189 MODULE_DEPEND(axge, ether, 1, 1, 1);
190 MODULE_DEPEND(axge, miibus, 1, 1, 1);
191 MODULE_VERSION(axge, 1);
192
193 static const struct usb_ether_methods axge_ue_methods = {
194 .ue_attach_post = axge_attach_post,
195 .ue_attach_post_sub = axge_attach_post_sub,
196 .ue_start = axge_start,
197 .ue_init = axge_init,
198 .ue_stop = axge_stop,
199 .ue_tick = axge_tick,
200 .ue_setmulti = axge_setmulti,
201 .ue_setpromisc = axge_setpromisc,
202 .ue_mii_upd = axge_ifmedia_upd,
203 .ue_mii_sts = axge_ifmedia_sts,
204 };
205
206 static int
axge_read_mem(struct axge_softc * sc,uint8_t cmd,uint16_t index,uint16_t val,void * buf,int len)207 axge_read_mem(struct axge_softc *sc, uint8_t cmd, uint16_t index,
208 uint16_t val, void *buf, int len)
209 {
210 struct usb_device_request req;
211
212 AXGE_LOCK_ASSERT(sc);
213
214 req.bmRequestType = UT_READ_VENDOR_DEVICE;
215 req.bRequest = cmd;
216 USETW(req.wValue, val);
217 USETW(req.wIndex, index);
218 USETW(req.wLength, len);
219
220 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
221 }
222
223 static void
axge_write_mem(struct axge_softc * sc,uint8_t cmd,uint16_t index,uint16_t val,void * buf,int len)224 axge_write_mem(struct axge_softc *sc, uint8_t cmd, uint16_t index,
225 uint16_t val, void *buf, int len)
226 {
227 struct usb_device_request req;
228
229 AXGE_LOCK_ASSERT(sc);
230
231 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
232 req.bRequest = cmd;
233 USETW(req.wValue, val);
234 USETW(req.wIndex, index);
235 USETW(req.wLength, len);
236
237 if (uether_do_request(&sc->sc_ue, &req, buf, 1000)) {
238 /* Error ignored. */
239 }
240 }
241
242 static uint8_t
axge_read_cmd_1(struct axge_softc * sc,uint8_t cmd,uint16_t reg)243 axge_read_cmd_1(struct axge_softc *sc, uint8_t cmd, uint16_t reg)
244 {
245 uint8_t val;
246
247 axge_read_mem(sc, cmd, 1, reg, &val, 1);
248 return (val);
249 }
250
251 static uint16_t
axge_read_cmd_2(struct axge_softc * sc,uint8_t cmd,uint16_t index,uint16_t reg)252 axge_read_cmd_2(struct axge_softc *sc, uint8_t cmd, uint16_t index,
253 uint16_t reg)
254 {
255 uint8_t val[2];
256
257 axge_read_mem(sc, cmd, index, reg, &val, 2);
258 return (UGETW(val));
259 }
260
261 static void
axge_write_cmd_1(struct axge_softc * sc,uint8_t cmd,uint16_t reg,uint8_t val)262 axge_write_cmd_1(struct axge_softc *sc, uint8_t cmd, uint16_t reg, uint8_t val)
263 {
264 axge_write_mem(sc, cmd, 1, reg, &val, 1);
265 }
266
267 static void
axge_write_cmd_2(struct axge_softc * sc,uint8_t cmd,uint16_t index,uint16_t reg,uint16_t val)268 axge_write_cmd_2(struct axge_softc *sc, uint8_t cmd, uint16_t index,
269 uint16_t reg, uint16_t val)
270 {
271 uint8_t temp[2];
272
273 USETW(temp, val);
274 axge_write_mem(sc, cmd, index, reg, &temp, 2);
275 }
276
277 static int
axge_miibus_readreg(device_t dev,int phy,int reg)278 axge_miibus_readreg(device_t dev, int phy, int reg)
279 {
280 struct axge_softc *sc;
281 uint16_t val;
282 int locked;
283
284 sc = device_get_softc(dev);
285 locked = lockowned(&sc->sc_lock);
286 if (!locked)
287 AXGE_LOCK(sc);
288
289 val = axge_read_cmd_2(sc, AXGE_ACCESS_PHY, reg, phy);
290
291 if (!locked)
292 AXGE_UNLOCK(sc);
293
294 return (val);
295 }
296
297 static int
axge_miibus_writereg(device_t dev,int phy,int reg,int val)298 axge_miibus_writereg(device_t dev, int phy, int reg, int val)
299 {
300 struct axge_softc *sc;
301 int locked;
302
303 sc = device_get_softc(dev);
304 if (sc->sc_phyno != phy)
305 return (0);
306 locked = lockowned(&sc->sc_lock);
307 if (!locked)
308 AXGE_LOCK(sc);
309
310 axge_write_cmd_2(sc, AXGE_ACCESS_PHY, reg, phy, val);
311
312 if (!locked)
313 AXGE_UNLOCK(sc);
314
315 return (0);
316 }
317
318 static void
axge_miibus_statchg(device_t dev)319 axge_miibus_statchg(device_t dev)
320 {
321 struct axge_softc *sc;
322 struct mii_data *mii;
323 struct ifnet *ifp;
324 uint8_t link_status, tmp[5];
325 uint16_t val;
326 int locked;
327
328 sc = device_get_softc(dev);
329 mii = GET_MII(sc);
330 locked = lockowned(&sc->sc_lock);
331 if (!locked)
332 AXGE_LOCK(sc);
333
334 ifp = uether_getifp(&sc->sc_ue);
335 if (mii == NULL || ifp == NULL ||
336 (ifp->if_flags & IFF_RUNNING) == 0)
337 goto done;
338
339 sc->sc_flags &= ~AXGE_FLAG_LINK;
340 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
341 (IFM_ACTIVE | IFM_AVALID)) {
342 switch (IFM_SUBTYPE(mii->mii_media_active)) {
343 case IFM_10_T:
344 case IFM_100_TX:
345 case IFM_1000_T:
346 sc->sc_flags |= AXGE_FLAG_LINK;
347 break;
348 default:
349 break;
350 }
351 }
352
353 /* Lost link, do nothing. */
354 if ((sc->sc_flags & AXGE_FLAG_LINK) == 0)
355 goto done;
356
357 link_status = axge_read_cmd_1(sc, AXGE_ACCESS_MAC, AXGE_PLSR);
358
359 val = 0;
360 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
361 val |= MSR_FD;
362 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
363 val |= MSR_TFC;
364 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
365 val |= MSR_RFC;
366 }
367 val |= MSR_RE;
368 switch (IFM_SUBTYPE(mii->mii_media_active)) {
369 case IFM_1000_T:
370 val |= MSR_GM | MSR_EN_125MHZ;
371 if (link_status & PLSR_USB_SS)
372 memcpy(tmp, &axge_bulk_size[0], 5);
373 else if (link_status & PLSR_USB_HS)
374 memcpy(tmp, &axge_bulk_size[1], 5);
375 else
376 memcpy(tmp, &axge_bulk_size[3], 5);
377 break;
378 case IFM_100_TX:
379 val |= MSR_PS;
380 if (link_status & (PLSR_USB_SS | PLSR_USB_HS))
381 memcpy(tmp, &axge_bulk_size[2], 5);
382 else
383 memcpy(tmp, &axge_bulk_size[3], 5);
384 break;
385 case IFM_10_T:
386 memcpy(tmp, &axge_bulk_size[3], 5);
387 break;
388 }
389 /* Rx bulk configuration. */
390 axge_write_mem(sc, AXGE_ACCESS_MAC, 5, AXGE_RX_BULKIN_QCTRL, tmp, 5);
391 axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_MSR, val);
392 done:
393 if (!locked)
394 AXGE_UNLOCK(sc);
395 }
396
397 static void
axge_chip_init(struct axge_softc * sc)398 axge_chip_init(struct axge_softc *sc)
399 {
400 /* Power up ethernet PHY. */
401 axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_EPPRCR, 0);
402 axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_EPPRCR, EPPRCR_IPRL);
403 uether_pause(&sc->sc_ue, hz / 4);
404 axge_write_cmd_1(sc, AXGE_ACCESS_MAC, AXGE_CLK_SELECT,
405 AXGE_CLK_SELECT_ACS | AXGE_CLK_SELECT_BCS);
406 uether_pause(&sc->sc_ue, hz / 10);
407 }
408
409 static void
axge_reset(struct axge_softc * sc)410 axge_reset(struct axge_softc *sc)
411 {
412 struct usb_config_descriptor *cd;
413 usb_error_t err;
414
415 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
416
417 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_lock,
418 cd->bConfigurationValue);
419 if (err)
420 DPRINTF("reset failed (ignored)\n");
421
422 /* Wait a little while for the chip to get its brains in order. */
423 uether_pause(&sc->sc_ue, hz / 100);
424
425 /* Reinitialize controller to achieve full reset. */
426 axge_chip_init(sc);
427 }
428
429 static void
axge_attach_post(struct usb_ether * ue)430 axge_attach_post(struct usb_ether *ue)
431 {
432 struct axge_softc *sc;
433
434 sc = uether_getsc(ue);
435 sc->sc_phyno = 3;
436
437 /* Initialize controller and get station address. */
438 axge_chip_init(sc);
439 axge_read_mem(sc, AXGE_ACCESS_MAC, ETHER_ADDR_LEN, AXGE_NIDR,
440 ue->ue_eaddr, ETHER_ADDR_LEN);
441 }
442
443 static int
axge_attach_post_sub(struct usb_ether * ue)444 axge_attach_post_sub(struct usb_ether *ue)
445 {
446 struct axge_softc *sc;
447 struct ifnet *ifp;
448 int error;
449
450 sc = uether_getsc(ue);
451 ifp = uether_getifp(ue);
452 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
453 ifp->if_start = uether_start;
454 ifp->if_ioctl = axge_ioctl;
455 ifp->if_init = uether_init;
456 ifq_set_maxlen(&ifp->if_snd, ifqmaxlen);
457 ifq_set_ready(&ifp->if_snd);
458
459 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_TXCSUM | IFCAP_RXCSUM;
460 ifp->if_hwassist = AXGE_CSUM_FEATURES;
461 ifp->if_capenable = ifp->if_capabilities;
462
463 /*
464 * NB: miibus assumes that the first member of the softc
465 * of it's parent is an arpcom structure
466 */
467 error = mii_phy_probe(ue->ue_dev, &ue->ue_miibus,
468 uether_ifmedia_upd, ue->ue_methods->ue_mii_sts);
469
470 return (error);
471 }
472
473 /*
474 * Set media options.
475 */
476 static int
axge_ifmedia_upd(struct ifnet * ifp)477 axge_ifmedia_upd(struct ifnet *ifp)
478 {
479 struct axge_softc *sc;
480 struct mii_data *mii;
481 struct mii_softc *miisc;
482 int error;
483
484 sc = ifp->if_softc;
485 mii = GET_MII(sc);
486 AXGE_LOCK_ASSERT(sc);
487
488 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
489 mii_phy_reset(miisc);
490 error = mii_mediachg(mii);
491
492 return (error);
493 }
494
495 /*
496 * Report current media status.
497 */
498 static void
axge_ifmedia_sts(struct ifnet * ifp,struct ifmediareq * ifmr)499 axge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
500 {
501 struct axge_softc *sc;
502 struct mii_data *mii;
503
504 sc = ifp->if_softc;
505 mii = GET_MII(sc);
506 AXGE_LOCK(sc);
507 mii_pollstat(mii);
508 ifmr->ifm_active = mii->mii_media_active;
509 ifmr->ifm_status = mii->mii_media_status;
510 AXGE_UNLOCK(sc);
511 }
512
513 /*
514 * Probe for a AX88179 chip.
515 */
516 static int
axge_probe(device_t dev)517 axge_probe(device_t dev)
518 {
519 struct usb_attach_arg *uaa;
520
521 uaa = device_get_ivars(dev);
522 if (uaa->usb_mode != USB_MODE_HOST)
523 return (ENXIO);
524 if (uaa->info.bConfigIndex != AXGE_CONFIG_IDX)
525 return (ENXIO);
526 if (uaa->info.bIfaceIndex != AXGE_IFACE_IDX)
527 return (ENXIO);
528
529 return (usbd_lookup_id_by_uaa(axge_devs, sizeof(axge_devs), uaa));
530 }
531
532 /*
533 * Attach the interface. Allocate softc structures, do ifmedia
534 * setup and ethernet/BPF attach.
535 */
536 static int
axge_attach(device_t dev)537 axge_attach(device_t dev)
538 {
539 struct usb_attach_arg *uaa;
540 struct axge_softc *sc;
541 struct usb_ether *ue;
542 uint8_t iface_index;
543 int error;
544
545 uaa = device_get_ivars(dev);
546 sc = device_get_softc(dev);
547 ue = &sc->sc_ue;
548
549 device_set_usb_desc(dev);
550 lockinit(&sc->sc_lock, device_get_nameunit(dev), 0, LK_CANRECURSE);
551
552 iface_index = AXGE_IFACE_IDX;
553 error = usbd_transfer_setup(uaa->device, &iface_index,
554 sc->sc_xfer, axge_config, AXGE_N_TRANSFER, sc, &sc->sc_lock);
555 if (error) {
556 device_printf(dev, "allocating USB transfers failed\n");
557 goto detach;
558 }
559
560 ue->ue_sc = sc;
561 ue->ue_dev = dev;
562 ue->ue_udev = uaa->device;
563 ue->ue_lock = &sc->sc_lock;
564 ue->ue_methods = &axge_ue_methods;
565
566 error = uether_ifattach(ue);
567 if (error) {
568 device_printf(dev, "could not attach interface\n");
569 goto detach;
570 }
571 return (0); /* success */
572
573 detach:
574 axge_detach(dev);
575 return (ENXIO); /* failure */
576 }
577
578 static int
axge_detach(device_t dev)579 axge_detach(device_t dev)
580 {
581 struct axge_softc *sc;
582 struct usb_ether *ue;
583
584 sc = device_get_softc(dev);
585 ue = &sc->sc_ue;
586 usbd_transfer_unsetup(sc->sc_xfer, AXGE_N_TRANSFER);
587 uether_ifdetach(ue);
588 lockuninit(&sc->sc_lock);
589
590 return (0);
591 }
592
593 static void
axge_bulk_read_callback(struct usb_xfer * xfer,usb_error_t error)594 axge_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
595 {
596 struct axge_softc *sc;
597 struct usb_ether *ue;
598 struct usb_page_cache *pc;
599 int actlen;
600
601 sc = usbd_xfer_softc(xfer);
602 ue = &sc->sc_ue;
603 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
604
605 switch (USB_GET_STATE(xfer)) {
606 case USB_ST_TRANSFERRED:
607 pc = usbd_xfer_get_frame(xfer, 0);
608 axge_rx_frame(ue, pc, actlen);
609
610 /* FALLTHROUGH */
611 case USB_ST_SETUP:
612 tr_setup:
613 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
614 usbd_transfer_submit(xfer);
615 uether_rxflush(ue);
616 break;
617
618 default:
619 if (error != USB_ERR_CANCELLED) {
620 usbd_xfer_set_stall(xfer);
621 goto tr_setup;
622 }
623 break;
624 }
625 }
626
627 static void
axge_bulk_write_callback(struct usb_xfer * xfer,usb_error_t error)628 axge_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
629 {
630 struct axge_softc *sc;
631 struct ifnet *ifp;
632 struct usb_page_cache *pc;
633 struct mbuf *m;
634 uint32_t txhdr;
635 int nframes, pos;
636
637 sc = usbd_xfer_softc(xfer);
638 ifp = uether_getifp(&sc->sc_ue);
639
640 switch (USB_GET_STATE(xfer)) {
641 case USB_ST_TRANSFERRED:
642 ifq_clr_oactive(&ifp->if_snd);
643 /* FALLTHROUGH */
644 case USB_ST_SETUP:
645 tr_setup:
646 if ((sc->sc_flags & AXGE_FLAG_LINK) == 0 ||
647 ifq_is_oactive(&ifp->if_snd)) {
648 /*
649 * Don't send anything if there is no link or
650 * controller is busy.
651 */
652 return;
653 }
654
655 for (nframes = 0; nframes < 16 &&
656 !ifq_is_empty(&ifp->if_snd); nframes++) {
657 m = ifq_dequeue(&ifp->if_snd);
658 if (m == NULL)
659 break;
660 usbd_xfer_set_frame_offset(xfer, nframes * MCLBYTES,
661 nframes);
662 pos = 0;
663 pc = usbd_xfer_get_frame(xfer, nframes);
664 txhdr = htole32(m->m_pkthdr.len);
665 usbd_copy_in(pc, 0, &txhdr, sizeof(txhdr));
666 txhdr = 0;
667 txhdr = htole32(txhdr);
668 usbd_copy_in(pc, 4, &txhdr, sizeof(txhdr));
669 pos += 8;
670 usbd_m_copy_in(pc, pos, m, 0, m->m_pkthdr.len);
671 pos += m->m_pkthdr.len;
672 if ((pos % usbd_xfer_max_framelen(xfer)) == 0)
673 txhdr |= 0x80008000;
674
675 /*
676 * XXX
677 * Update TX packet counter here. This is not
678 * correct way but it seems that there is no way
679 * to know how many packets are sent at the end
680 * of transfer because controller combines
681 * multiple writes into single one if there is
682 * room in TX buffer of controller.
683 */
684 IFNET_STAT_INC(ifp, opackets, 1);
685
686 /*
687 * if there's a BPF listener, bounce a copy
688 * of this frame to him:
689 */
690 BPF_MTAP(ifp, m);
691
692 m_freem(m);
693
694 /* Set frame length. */
695 usbd_xfer_set_frame_len(xfer, nframes, pos);
696 }
697 if (nframes != 0) {
698 usbd_xfer_set_frames(xfer, nframes);
699 usbd_transfer_submit(xfer);
700 ifq_set_oactive(&ifp->if_snd);
701 }
702 return;
703 /* NOTREACHED */
704 default:
705 IFNET_STAT_INC(ifp, oerrors, 1);
706 ifq_clr_oactive(&ifp->if_snd);
707
708 if (error != USB_ERR_CANCELLED) {
709 usbd_xfer_set_stall(xfer);
710 goto tr_setup;
711 }
712 return;
713
714 }
715 }
716
717 static void
axge_tick(struct usb_ether * ue)718 axge_tick(struct usb_ether *ue)
719 {
720 struct axge_softc *sc;
721 struct mii_data *mii;
722
723 sc = uether_getsc(ue);
724 mii = GET_MII(sc);
725 AXGE_LOCK_ASSERT(sc);
726
727 mii_tick(mii);
728 if ((sc->sc_flags & AXGE_FLAG_LINK) == 0) {
729 axge_miibus_statchg(ue->ue_dev);
730 if ((sc->sc_flags & AXGE_FLAG_LINK) != 0)
731 axge_start(ue);
732 }
733 }
734
735 static void
axge_setmulti(struct usb_ether * ue)736 axge_setmulti(struct usb_ether *ue)
737 {
738 struct axge_softc *sc;
739 struct ifnet *ifp;
740 struct ifmultiaddr *ifma;
741 uint32_t h;
742 uint16_t rxmode;
743 uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
744
745 sc = uether_getsc(ue);
746 ifp = uether_getifp(ue);
747 h = 0;
748 AXGE_LOCK_ASSERT(sc);
749
750 rxmode = axge_read_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_RCR);
751 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
752 rxmode |= RCR_AMALL;
753 axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_RCR, rxmode);
754 return;
755 }
756 rxmode &= ~RCR_AMALL;
757
758 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
759 if (ifma->ifma_addr->sa_family != AF_LINK)
760 continue;
761 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
762 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
763 setbit(hashtbl, h);
764 }
765
766 axge_write_mem(sc, AXGE_ACCESS_MAC, 8, AXGE_MFA, (void *)&hashtbl, 8);
767 axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_RCR, rxmode);
768 }
769
770 static void
axge_setpromisc(struct usb_ether * ue)771 axge_setpromisc(struct usb_ether *ue)
772 {
773 struct axge_softc *sc;
774 struct ifnet *ifp;
775 uint16_t rxmode;
776
777 sc = uether_getsc(ue);
778 ifp = uether_getifp(ue);
779 rxmode = axge_read_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_RCR);
780
781 if (ifp->if_flags & IFF_PROMISC)
782 rxmode |= RCR_PRO;
783 else
784 rxmode &= ~RCR_PRO;
785
786 axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_RCR, rxmode);
787 axge_setmulti(ue);
788 }
789
790 static void
axge_start(struct usb_ether * ue)791 axge_start(struct usb_ether *ue)
792 {
793 struct axge_softc *sc;
794
795 sc = uether_getsc(ue);
796 /*
797 * Start the USB transfers, if not already started.
798 */
799 usbd_transfer_start(sc->sc_xfer[AXGE_BULK_DT_RD]);
800 usbd_transfer_start(sc->sc_xfer[AXGE_BULK_DT_WR]);
801 }
802
803 static void
axge_init(struct usb_ether * ue)804 axge_init(struct usb_ether *ue)
805 {
806 struct axge_softc *sc;
807 struct ifnet *ifp;
808 uint16_t rxmode;
809
810 sc = uether_getsc(ue);
811 ifp = uether_getifp(ue);
812 AXGE_LOCK_ASSERT(sc);
813
814 if ((ifp->if_flags & IFF_RUNNING) != 0)
815 return;
816
817 /*
818 * Cancel pending I/O and free all RX/TX buffers.
819 */
820 axge_stop(ue);
821
822 axge_reset(sc);
823
824 /* Set MAC address. */
825 axge_write_mem(sc, AXGE_ACCESS_MAC, ETHER_ADDR_LEN, AXGE_NIDR,
826 IF_LLADDR(ifp), ETHER_ADDR_LEN);
827
828 axge_write_cmd_1(sc, AXGE_ACCESS_MAC, AXGE_PWLLR, 0x34);
829 axge_write_cmd_1(sc, AXGE_ACCESS_MAC, AXGE_PWLHR, 0x52);
830
831 /* Configure TX/RX checksum offloading. */
832 axge_csum_cfg(ue);
833
834 /* Configure RX settings. */
835 rxmode = (RCR_AM | RCR_SO | RCR_DROP_CRCE);
836 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0)
837 rxmode |= RCR_IPE;
838
839 /* If we want promiscuous mode, set the allframes bit. */
840 if (ifp->if_flags & IFF_PROMISC)
841 rxmode |= RCR_PRO;
842
843 if (ifp->if_flags & IFF_BROADCAST)
844 rxmode |= RCR_AB;
845
846 axge_write_cmd_2(sc, AXGE_ACCESS_MAC, 2, AXGE_RCR, rxmode);
847
848 axge_write_cmd_1(sc, AXGE_ACCESS_MAC, AXGE_MMSR,
849 MMSR_PME_TYPE | MMSR_PME_POL | MMSR_RWMP);
850
851 /* Load the multicast filter. */
852 axge_setmulti(ue);
853
854 usbd_xfer_set_stall(sc->sc_xfer[AXGE_BULK_DT_WR]);
855
856 ifp->if_flags |= IFF_RUNNING;
857 /* Switch to selected media. */
858 axge_ifmedia_upd(ifp);
859 }
860
861 static void
axge_stop(struct usb_ether * ue)862 axge_stop(struct usb_ether *ue)
863 {
864 struct axge_softc *sc;
865 struct ifnet *ifp;
866
867 sc = uether_getsc(ue);
868 ifp = uether_getifp(ue);
869
870 AXGE_LOCK_ASSERT(sc);
871
872 ifp->if_flags &= ~IFF_RUNNING;
873 ifq_clr_oactive(&ifp->if_snd);
874 sc->sc_flags &= ~AXGE_FLAG_LINK;
875
876 /*
877 * Stop all the transfers, if not already stopped:
878 */
879 usbd_transfer_stop(sc->sc_xfer[AXGE_BULK_DT_WR]);
880 usbd_transfer_stop(sc->sc_xfer[AXGE_BULK_DT_RD]);
881 }
882
883 static int
axge_ioctl(struct ifnet * ifp,u_long cmd,caddr_t data,struct ucred * uc)884 axge_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *uc)
885 {
886 struct usb_ether *ue;
887 struct axge_softc *sc;
888 struct ifreq *ifr;
889 int error, mask, reinit;
890
891 ue = ifp->if_softc;
892 sc = uether_getsc(ue);
893 ifr = (struct ifreq *)data;
894 error = 0;
895 reinit = 0;
896 if (cmd == SIOCSIFCAP) {
897 AXGE_LOCK(sc);
898 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
899 if ((mask & IFCAP_TXCSUM) != 0 &&
900 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
901 ifp->if_capenable ^= IFCAP_TXCSUM;
902 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
903 ifp->if_hwassist |= AXGE_CSUM_FEATURES;
904 else
905 ifp->if_hwassist &= ~AXGE_CSUM_FEATURES;
906 reinit++;
907 }
908 if ((mask & IFCAP_RXCSUM) != 0 &&
909 (ifp->if_capabilities & IFCAP_RXCSUM) != 0) {
910 ifp->if_capenable ^= IFCAP_RXCSUM;
911 reinit++;
912 }
913 if (reinit > 0 && ifp->if_flags & IFF_RUNNING)
914 ifp->if_flags &= ~IFF_RUNNING;
915 else
916 reinit = 0;
917 AXGE_UNLOCK(sc);
918 if (reinit > 0)
919 uether_init(ue);
920 } else
921 error = uether_ioctl(ifp, cmd, data, uc);
922
923 return (error);
924 }
925
926 static void
axge_rx_frame(struct usb_ether * ue,struct usb_page_cache * pc,int actlen)927 axge_rx_frame(struct usb_ether *ue, struct usb_page_cache *pc, int actlen)
928 {
929 uint32_t pos;
930 uint32_t pkt_cnt;
931 uint32_t rxhdr;
932 uint32_t pkt_hdr;
933 uint32_t hdr_off;
934 uint32_t pktlen;
935
936 /* verify we have enough data */
937 if (actlen < (int)sizeof(rxhdr))
938 return;
939
940 pos = 0;
941
942 usbd_copy_out(pc, actlen - sizeof(rxhdr), &rxhdr, sizeof(rxhdr));
943 rxhdr = le32toh(rxhdr);
944
945 pkt_cnt = (uint16_t)rxhdr;
946 hdr_off = (uint16_t)(rxhdr >> 16);
947
948 while (pkt_cnt--) {
949 /* verify the header offset */
950 if ((int)(hdr_off + sizeof(pkt_hdr)) > actlen) {
951 DPRINTF("End of packet headers\n");
952 break;
953 }
954 if ((int)pos >= actlen) {
955 DPRINTF("Data position reached end\n");
956 break;
957 }
958 usbd_copy_out(pc, hdr_off, &pkt_hdr, sizeof(pkt_hdr));
959
960 pkt_hdr = le32toh(pkt_hdr);
961 pktlen = (pkt_hdr >> 16) & 0x1fff;
962 if (pkt_hdr & (AXGE_RXHDR_CRC_ERR | AXGE_RXHDR_DROP_ERR)) {
963 DPRINTF("Dropped a packet\n");
964 IFNET_STAT_INC(uether_getifp(ue), ierrors, 1);
965 }
966 if (pktlen >= 6 && (int)(pos + pktlen) <= actlen) {
967 axge_rxeof(ue, pc, pos + 2, pktlen - 6, pkt_hdr);
968 } else {
969 DPRINTF("Invalid packet pos=%d len=%d\n",
970 (int)pos, (int)pktlen);
971 }
972 pos += (pktlen + 7) & ~7;
973 hdr_off += sizeof(pkt_hdr);
974 }
975 }
976
977 static void
axge_rxeof(struct usb_ether * ue,struct usb_page_cache * pc,unsigned int offset,unsigned int len,uint32_t pkt_hdr)978 axge_rxeof(struct usb_ether *ue, struct usb_page_cache *pc,
979 unsigned int offset, unsigned int len, uint32_t pkt_hdr)
980 {
981 struct ifnet *ifp;
982 struct mbuf *m;
983
984 ifp = uether_getifp(ue);
985 if (len < ETHER_HDR_LEN || len > MCLBYTES - ETHER_ALIGN) {
986 IFNET_STAT_INC(ifp, ierrors, 1);
987 return;
988 }
989
990 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
991 if (m == NULL) {
992 IFNET_STAT_INC(ifp, iqdrops, 1);
993 return;
994 }
995 m->m_pkthdr.rcvif = ifp;
996 m->m_len = m->m_pkthdr.len = len + ETHER_ALIGN;
997 m_adj(m, ETHER_ALIGN);
998
999 usbd_copy_out(pc, offset, mtod(m, uint8_t *), len);
1000
1001 IFNET_STAT_INC(ifp, ipackets, 1);
1002
1003 if ((pkt_hdr & (AXGE_RXHDR_L4CSUM_ERR | AXGE_RXHDR_L3CSUM_ERR)) == 0) {
1004 if ((pkt_hdr & AXGE_RXHDR_L4_TYPE_MASK) ==
1005 AXGE_RXHDR_L4_TYPE_TCP ||
1006 (pkt_hdr & AXGE_RXHDR_L4_TYPE_MASK) ==
1007 AXGE_RXHDR_L4_TYPE_UDP) {
1008 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
1009 CSUM_PSEUDO_HDR | CSUM_IP_CHECKED | CSUM_IP_VALID;
1010 m->m_pkthdr.csum_data = 0xffff;
1011 }
1012 }
1013
1014 IF_ENQUEUE(&ue->ue_rxq, m);
1015 }
1016
1017 static void
axge_csum_cfg(struct usb_ether * ue)1018 axge_csum_cfg(struct usb_ether *ue)
1019 {
1020 struct axge_softc *sc;
1021 struct ifnet *ifp;
1022 uint8_t csum;
1023
1024 sc = uether_getsc(ue);
1025 AXGE_LOCK_ASSERT(sc);
1026 ifp = uether_getifp(ue);
1027
1028 csum = 0;
1029 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
1030 csum |= CTCR_IP | CTCR_TCP | CTCR_UDP;
1031 axge_write_cmd_1(sc, AXGE_ACCESS_MAC, AXGE_CTCR, csum);
1032
1033 csum = 0;
1034 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0)
1035 csum |= CRCR_IP | CRCR_TCP | CRCR_UDP;
1036 axge_write_cmd_1(sc, AXGE_ACCESS_MAC, AXGE_CRCR, csum);
1037 }
1038