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1 /*      $NetBSD: if_udav.c,v 1.2 2003/09/04 15:17:38 tsutsui Exp $      */
2 /*      $nabe: if_udav.c,v 1.3 2003/08/21 16:57:19 nabe Exp $   */
3 /*      $FreeBSD$       */
4 /*-
5  * Copyright (c) 2003
6  *     Shingo WATANABE <nabe@nabechan.org>.  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  * 3. Neither the name of the author nor the names of any co-contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  */
33
34 /*
35  * DM9601(DAVICOM USB to Ethernet MAC Controller with Integrated 10/100 PHY)
36  * The spec can be found at the following url.
37  *   http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf
38  */
39
40 /*
41  * TODO:
42  *      Interrupt Endpoint support
43  *      External PHYs
44  */
45
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
48
49 #include <sys/stdint.h>
50 #include <sys/stddef.h>
51 #include <sys/param.h>
52 #include <sys/queue.h>
53 #include <sys/types.h>
54 #include <sys/systm.h>
55 #include <sys/socket.h>
56 #include <sys/kernel.h>
57 #include <sys/bus.h>
58 #include <sys/module.h>
59 #include <sys/lock.h>
60 #include <sys/mutex.h>
61 #include <sys/condvar.h>
62 #include <sys/sysctl.h>
63 #include <sys/sx.h>
64 #include <sys/unistd.h>
65 #include <sys/callout.h>
66 #include <sys/malloc.h>
67 #include <sys/priv.h>
68
69 #include <net/if.h>
70 #include <net/if_var.h>
71
72 #include <dev/usb/usb.h>
73 #include <dev/usb/usbdi.h>
74 #include <dev/usb/usbdi_util.h>
75 #include "usbdevs.h"
76
77 #define USB_DEBUG_VAR udav_debug
78 #include <dev/usb/usb_debug.h>
79 #include <dev/usb/usb_process.h>
80
81 #include <dev/usb/net/usb_ethernet.h>
82 #include <dev/usb/net/if_udavreg.h>
83
84 /* prototypes */
85
86 static device_probe_t udav_probe;
87 static device_attach_t udav_attach;
88 static device_detach_t udav_detach;
89
90 static usb_callback_t udav_bulk_write_callback;
91 static usb_callback_t udav_bulk_read_callback;
92 static usb_callback_t udav_intr_callback;
93
94 static uether_fn_t udav_attach_post;
95 static uether_fn_t udav_init;
96 static uether_fn_t udav_stop;
97 static uether_fn_t udav_start;
98 static uether_fn_t udav_tick;
99 static uether_fn_t udav_setmulti;
100 static uether_fn_t udav_setpromisc;
101
102 static int      udav_csr_read(struct udav_softc *, uint16_t, void *, int);
103 static int      udav_csr_write(struct udav_softc *, uint16_t, void *, int);
104 static uint8_t  udav_csr_read1(struct udav_softc *, uint16_t);
105 static int      udav_csr_write1(struct udav_softc *, uint16_t, uint8_t);
106 static void     udav_reset(struct udav_softc *);
107 static int      udav_ifmedia_upd(struct ifnet *);
108 static void     udav_ifmedia_status(struct ifnet *, struct ifmediareq *);
109
110 static miibus_readreg_t udav_miibus_readreg;
111 static miibus_writereg_t udav_miibus_writereg;
112 static miibus_statchg_t udav_miibus_statchg;
113
114 static const struct usb_config udav_config[UDAV_N_TRANSFER] = {
115
116         [UDAV_BULK_DT_WR] = {
117                 .type = UE_BULK,
118                 .endpoint = UE_ADDR_ANY,
119                 .direction = UE_DIR_OUT,
120                 .bufsize = (MCLBYTES + 2),
121                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
122                 .callback = udav_bulk_write_callback,
123                 .timeout = 10000,       /* 10 seconds */
124         },
125
126         [UDAV_BULK_DT_RD] = {
127                 .type = UE_BULK,
128                 .endpoint = UE_ADDR_ANY,
129                 .direction = UE_DIR_IN,
130                 .bufsize = (MCLBYTES + 3),
131                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
132                 .callback = udav_bulk_read_callback,
133                 .timeout = 0,   /* no timeout */
134         },
135
136         [UDAV_INTR_DT_RD] = {
137                 .type = UE_INTERRUPT,
138                 .endpoint = UE_ADDR_ANY,
139                 .direction = UE_DIR_IN,
140                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
141                 .bufsize = 0,   /* use wMaxPacketSize */
142                 .callback = udav_intr_callback,
143         },
144 };
145
146 static device_method_t udav_methods[] = {
147         /* Device interface */
148         DEVMETHOD(device_probe, udav_probe),
149         DEVMETHOD(device_attach, udav_attach),
150         DEVMETHOD(device_detach, udav_detach),
151
152         /* MII interface */
153         DEVMETHOD(miibus_readreg, udav_miibus_readreg),
154         DEVMETHOD(miibus_writereg, udav_miibus_writereg),
155         DEVMETHOD(miibus_statchg, udav_miibus_statchg),
156
157         DEVMETHOD_END
158 };
159
160 static driver_t udav_driver = {
161         .name = "udav",
162         .methods = udav_methods,
163         .size = sizeof(struct udav_softc),
164 };
165
166 static devclass_t udav_devclass;
167
168 static const STRUCT_USB_HOST_ID udav_devs[] = {
169         /* ShanTou DM9601 USB NIC */
170         {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_DM9601, 0)},
171         /* ShanTou ST268 USB NIC */
172         {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ST268, 0)},
173         /* Corega USB-TXC */
174         {USB_VPI(USB_VENDOR_COREGA, USB_PRODUCT_COREGA_FETHER_USB_TXC, 0)},
175         /* ShanTou AMD8515 USB NIC */
176         {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ADM8515, 0)},
177         /* Kontron AG USB Ethernet */
178         {USB_VPI(USB_VENDOR_KONTRON, USB_PRODUCT_KONTRON_DM9601, 0)},
179         {USB_VPI(USB_VENDOR_KONTRON, USB_PRODUCT_KONTRON_JP1082,
180             UDAV_FLAG_NO_PHY)},
181 };
182
183 DRIVER_MODULE(udav, uhub, udav_driver, udav_devclass, NULL, 0);
184 DRIVER_MODULE(miibus, udav, miibus_driver, miibus_devclass, 0, 0);
185 MODULE_DEPEND(udav, uether, 1, 1, 1);
186 MODULE_DEPEND(udav, usb, 1, 1, 1);
187 MODULE_DEPEND(udav, ether, 1, 1, 1);
188 MODULE_DEPEND(udav, miibus, 1, 1, 1);
189 MODULE_VERSION(udav, 1);
190 USB_PNP_HOST_INFO(udav_devs);
191
192 static const struct usb_ether_methods udav_ue_methods = {
193         .ue_attach_post = udav_attach_post,
194         .ue_start = udav_start,
195         .ue_init = udav_init,
196         .ue_stop = udav_stop,
197         .ue_tick = udav_tick,
198         .ue_setmulti = udav_setmulti,
199         .ue_setpromisc = udav_setpromisc,
200         .ue_mii_upd = udav_ifmedia_upd,
201         .ue_mii_sts = udav_ifmedia_status,
202 };
203
204 static const struct usb_ether_methods udav_ue_methods_nophy = {
205         .ue_attach_post = udav_attach_post,
206         .ue_start = udav_start,
207         .ue_init = udav_init,
208         .ue_stop = udav_stop,
209         .ue_setmulti = udav_setmulti,
210         .ue_setpromisc = udav_setpromisc,
211 };
212
213 #ifdef USB_DEBUG
214 static int udav_debug = 0;
215
216 static SYSCTL_NODE(_hw_usb, OID_AUTO, udav, CTLFLAG_RW, 0, "USB udav");
217 SYSCTL_INT(_hw_usb_udav, OID_AUTO, debug, CTLFLAG_RWTUN, &udav_debug, 0,
218     "Debug level");
219 #endif
220
221 #define UDAV_SETBIT(sc, reg, x) \
222         udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) | (x))
223
224 #define UDAV_CLRBIT(sc, reg, x) \
225         udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) & ~(x))
226
227 static void
228 udav_attach_post(struct usb_ether *ue)
229 {
230         struct udav_softc *sc = uether_getsc(ue);
231
232         /* reset the adapter */
233         udav_reset(sc);
234
235         /* Get Ethernet Address */
236         udav_csr_read(sc, UDAV_PAR, ue->ue_eaddr, ETHER_ADDR_LEN);
237 }
238
239 static int
240 udav_probe(device_t dev)
241 {
242         struct usb_attach_arg *uaa = device_get_ivars(dev);
243
244         if (uaa->usb_mode != USB_MODE_HOST)
245                 return (ENXIO);
246         if (uaa->info.bConfigIndex != UDAV_CONFIG_INDEX)
247                 return (ENXIO);
248         if (uaa->info.bIfaceIndex != UDAV_IFACE_INDEX)
249                 return (ENXIO);
250
251         return (usbd_lookup_id_by_uaa(udav_devs, sizeof(udav_devs), uaa));
252 }
253
254 static int
255 udav_attach(device_t dev)
256 {
257         struct usb_attach_arg *uaa = device_get_ivars(dev);
258         struct udav_softc *sc = device_get_softc(dev);
259         struct usb_ether *ue = &sc->sc_ue;
260         uint8_t iface_index;
261         int error;
262
263         sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
264
265         device_set_usb_desc(dev);
266
267         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
268
269         iface_index = UDAV_IFACE_INDEX;
270         error = usbd_transfer_setup(uaa->device, &iface_index,
271             sc->sc_xfer, udav_config, UDAV_N_TRANSFER, sc, &sc->sc_mtx);
272         if (error) {
273                 device_printf(dev, "allocating USB transfers failed\n");
274                 goto detach;
275         }
276
277         /*
278          * The JP1082 has an unusable PHY and provides no link information.
279          */
280         if (sc->sc_flags & UDAV_FLAG_NO_PHY) {
281                 ue->ue_methods = &udav_ue_methods_nophy;
282                 sc->sc_flags |= UDAV_FLAG_LINK;
283         } else {
284                 ue->ue_methods = &udav_ue_methods;
285         }
286
287         ue->ue_sc = sc;
288         ue->ue_dev = dev;
289         ue->ue_udev = uaa->device;
290         ue->ue_mtx = &sc->sc_mtx;
291
292         error = uether_ifattach(ue);
293         if (error) {
294                 device_printf(dev, "could not attach interface\n");
295                 goto detach;
296         }
297
298         return (0);                     /* success */
299
300 detach:
301         udav_detach(dev);
302         return (ENXIO);                 /* failure */
303 }
304
305 static int
306 udav_detach(device_t dev)
307 {
308         struct udav_softc *sc = device_get_softc(dev);
309         struct usb_ether *ue = &sc->sc_ue;
310
311         usbd_transfer_unsetup(sc->sc_xfer, UDAV_N_TRANSFER);
312         uether_ifdetach(ue);
313         mtx_destroy(&sc->sc_mtx);
314
315         return (0);
316 }
317
318 #if 0
319 static int
320 udav_mem_read(struct udav_softc *sc, uint16_t offset, void *buf,
321     int len)
322 {
323         struct usb_device_request req;
324
325         len &= 0xff;
326
327         req.bmRequestType = UT_READ_VENDOR_DEVICE;
328         req.bRequest = UDAV_REQ_MEM_READ;
329         USETW(req.wValue, 0x0000);
330         USETW(req.wIndex, offset);
331         USETW(req.wLength, len);
332
333         return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
334 }
335
336 static int
337 udav_mem_write(struct udav_softc *sc, uint16_t offset, void *buf,
338     int len)
339 {
340         struct usb_device_request req;
341
342         len &= 0xff;
343
344         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
345         req.bRequest = UDAV_REQ_MEM_WRITE;
346         USETW(req.wValue, 0x0000);
347         USETW(req.wIndex, offset);
348         USETW(req.wLength, len);
349
350         return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
351 }
352
353 static int
354 udav_mem_write1(struct udav_softc *sc, uint16_t offset,
355     uint8_t ch)
356 {
357         struct usb_device_request req;
358
359         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
360         req.bRequest = UDAV_REQ_MEM_WRITE1;
361         USETW(req.wValue, ch);
362         USETW(req.wIndex, offset);
363         USETW(req.wLength, 0x0000);
364
365         return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
366 }
367 #endif
368
369 static int
370 udav_csr_read(struct udav_softc *sc, uint16_t offset, void *buf, int len)
371 {
372         struct usb_device_request req;
373
374         len &= 0xff;
375
376         req.bmRequestType = UT_READ_VENDOR_DEVICE;
377         req.bRequest = UDAV_REQ_REG_READ;
378         USETW(req.wValue, 0x0000);
379         USETW(req.wIndex, offset);
380         USETW(req.wLength, len);
381
382         return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
383 }
384
385 static int
386 udav_csr_write(struct udav_softc *sc, uint16_t offset, void *buf, int len)
387 {
388         struct usb_device_request req;
389
390         offset &= 0xff;
391         len &= 0xff;
392
393         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
394         req.bRequest = UDAV_REQ_REG_WRITE;
395         USETW(req.wValue, 0x0000);
396         USETW(req.wIndex, offset);
397         USETW(req.wLength, len);
398
399         return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
400 }
401
402 static uint8_t
403 udav_csr_read1(struct udav_softc *sc, uint16_t offset)
404 {
405         uint8_t val;
406
407         udav_csr_read(sc, offset, &val, 1);
408         return (val);
409 }
410
411 static int
412 udav_csr_write1(struct udav_softc *sc, uint16_t offset,
413     uint8_t ch)
414 {
415         struct usb_device_request req;
416
417         offset &= 0xff;
418
419         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
420         req.bRequest = UDAV_REQ_REG_WRITE1;
421         USETW(req.wValue, ch);
422         USETW(req.wIndex, offset);
423         USETW(req.wLength, 0x0000);
424
425         return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
426 }
427
428 static void
429 udav_init(struct usb_ether *ue)
430 {
431         struct udav_softc *sc = ue->ue_sc;
432         struct ifnet *ifp = uether_getifp(&sc->sc_ue);
433
434         UDAV_LOCK_ASSERT(sc, MA_OWNED);
435
436         /*
437          * Cancel pending I/O
438          */
439         udav_stop(ue);
440
441         /* set MAC address */
442         udav_csr_write(sc, UDAV_PAR, IF_LLADDR(ifp), ETHER_ADDR_LEN);
443
444         /* initialize network control register */
445
446         /* disable loopback  */
447         UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_LBK0 | UDAV_NCR_LBK1);
448
449         /* Initialize RX control register */
450         UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_DIS_LONG | UDAV_RCR_DIS_CRC);
451
452         /* load multicast filter and update promiscious mode bit */
453         udav_setpromisc(ue);
454
455         /* enable RX */
456         UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_RXEN);
457
458         /* clear POWER_DOWN state of internal PHY */
459         UDAV_SETBIT(sc, UDAV_GPCR, UDAV_GPCR_GEP_CNTL0);
460         UDAV_CLRBIT(sc, UDAV_GPR, UDAV_GPR_GEPIO0);
461
462         usbd_xfer_set_stall(sc->sc_xfer[UDAV_BULK_DT_WR]);
463
464         ifp->if_drv_flags |= IFF_DRV_RUNNING;
465         udav_start(ue);
466 }
467
468 static void
469 udav_reset(struct udav_softc *sc)
470 {
471         int i;
472
473         /* Select PHY */
474 #if 1
475         /*
476          * XXX: force select internal phy.
477          *      external phy routines are not tested.
478          */
479         UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
480 #else
481         if (sc->sc_flags & UDAV_EXT_PHY)
482                 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
483         else
484                 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
485 #endif
486
487         UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_RST);
488
489         for (i = 0; i < UDAV_TX_TIMEOUT; i++) {
490                 if (!(udav_csr_read1(sc, UDAV_NCR) & UDAV_NCR_RST))
491                         break;
492                 if (uether_pause(&sc->sc_ue, hz / 100))
493                         break;
494         }
495
496         uether_pause(&sc->sc_ue, hz / 100);
497 }
498
499 #define UDAV_BITS       6
500 static void
501 udav_setmulti(struct usb_ether *ue)
502 {
503         struct udav_softc *sc = ue->ue_sc;
504         struct ifnet *ifp = uether_getifp(&sc->sc_ue);
505         struct ifmultiaddr *ifma;
506         uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
507         int h = 0;
508
509         UDAV_LOCK_ASSERT(sc, MA_OWNED);
510
511         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
512                 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC);
513                 return;
514         }
515
516         /* first, zot all the existing hash bits */
517         memset(hashtbl, 0x00, sizeof(hashtbl));
518         hashtbl[7] |= 0x80;     /* broadcast address */
519         udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl));
520
521         /* now program new ones */
522         if_maddr_rlock(ifp);
523         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
524         {
525                 if (ifma->ifma_addr->sa_family != AF_LINK)
526                         continue;
527                 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
528                     ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
529                 hashtbl[h / 8] |= 1 << (h % 8);
530         }
531         if_maddr_runlock(ifp);
532
533         /* disable all multicast */
534         UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL);
535
536         /* write hash value to the register */
537         udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl));
538 }
539
540 static void
541 udav_setpromisc(struct usb_ether *ue)
542 {
543         struct udav_softc *sc = ue->ue_sc;
544         struct ifnet *ifp = uether_getifp(&sc->sc_ue);
545         uint8_t rxmode;
546
547         rxmode = udav_csr_read1(sc, UDAV_RCR);
548         rxmode &= ~(UDAV_RCR_ALL | UDAV_RCR_PRMSC);
549
550         if (ifp->if_flags & IFF_PROMISC)
551                 rxmode |= UDAV_RCR_ALL | UDAV_RCR_PRMSC;
552         else if (ifp->if_flags & IFF_ALLMULTI)
553                 rxmode |= UDAV_RCR_ALL;
554
555         /* write new mode bits */
556         udav_csr_write1(sc, UDAV_RCR, rxmode);
557 }
558
559 static void
560 udav_start(struct usb_ether *ue)
561 {
562         struct udav_softc *sc = ue->ue_sc;
563
564         /*
565          * start the USB transfers, if not already started:
566          */
567         usbd_transfer_start(sc->sc_xfer[UDAV_INTR_DT_RD]);
568         usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_RD]);
569         usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_WR]);
570 }
571
572 static void
573 udav_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
574 {
575         struct udav_softc *sc = usbd_xfer_softc(xfer);
576         struct ifnet *ifp = uether_getifp(&sc->sc_ue);
577         struct usb_page_cache *pc;
578         struct mbuf *m;
579         int extra_len;
580         int temp_len;
581         uint8_t buf[2];
582
583         switch (USB_GET_STATE(xfer)) {
584         case USB_ST_TRANSFERRED:
585                 DPRINTFN(11, "transfer complete\n");
586                 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
587
588                 /* FALLTHROUGH */
589         case USB_ST_SETUP:
590 tr_setup:
591                 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0) {
592                         /*
593                          * don't send anything if there is no link !
594                          */
595                         return;
596                 }
597                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
598
599                 if (m == NULL)
600                         return;
601                 if (m->m_pkthdr.len > MCLBYTES)
602                         m->m_pkthdr.len = MCLBYTES;
603                 if (m->m_pkthdr.len < UDAV_MIN_FRAME_LEN) {
604                         extra_len = UDAV_MIN_FRAME_LEN - m->m_pkthdr.len;
605                 } else {
606                         extra_len = 0;
607                 }
608
609                 temp_len = (m->m_pkthdr.len + extra_len);
610
611                 /*
612                  * the frame length is specified in the first 2 bytes of the
613                  * buffer
614                  */
615                 buf[0] = (uint8_t)(temp_len);
616                 buf[1] = (uint8_t)(temp_len >> 8);
617
618                 temp_len += 2;
619
620                 pc = usbd_xfer_get_frame(xfer, 0);
621                 usbd_copy_in(pc, 0, buf, 2);
622                 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
623
624                 if (extra_len)
625                         usbd_frame_zero(pc, temp_len - extra_len, extra_len);
626                 /*
627                  * if there's a BPF listener, bounce a copy
628                  * of this frame to him:
629                  */
630                 BPF_MTAP(ifp, m);
631
632                 m_freem(m);
633
634                 usbd_xfer_set_frame_len(xfer, 0, temp_len);
635                 usbd_transfer_submit(xfer);
636                 return;
637
638         default:                        /* Error */
639                 DPRINTFN(11, "transfer error, %s\n",
640                     usbd_errstr(error));
641
642                 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
643
644                 if (error != USB_ERR_CANCELLED) {
645                         /* try to clear stall first */
646                         usbd_xfer_set_stall(xfer);
647                         goto tr_setup;
648                 }
649                 return;
650         }
651 }
652
653 static void
654 udav_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
655 {
656         struct udav_softc *sc = usbd_xfer_softc(xfer);
657         struct usb_ether *ue = &sc->sc_ue;
658         struct ifnet *ifp = uether_getifp(ue);
659         struct usb_page_cache *pc;
660         struct udav_rxpkt stat;
661         int len;
662         int actlen;
663
664         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
665
666         switch (USB_GET_STATE(xfer)) {
667         case USB_ST_TRANSFERRED:
668
669                 if (actlen < (int)(sizeof(stat) + ETHER_CRC_LEN)) {
670                         if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
671                         goto tr_setup;
672                 }
673                 pc = usbd_xfer_get_frame(xfer, 0);
674                 usbd_copy_out(pc, 0, &stat, sizeof(stat));
675                 actlen -= sizeof(stat);
676                 len = min(actlen, le16toh(stat.pktlen));
677                 len -= ETHER_CRC_LEN;
678
679                 if (stat.rxstat & UDAV_RSR_LCS) {
680                         if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1);
681                         goto tr_setup;
682                 }
683                 if (stat.rxstat & UDAV_RSR_ERR) {
684                         if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
685                         goto tr_setup;
686                 }
687                 uether_rxbuf(ue, pc, sizeof(stat), len);
688                 /* FALLTHROUGH */
689         case USB_ST_SETUP:
690 tr_setup:
691                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
692                 usbd_transfer_submit(xfer);
693                 uether_rxflush(ue);
694                 return;
695
696         default:                        /* Error */
697                 DPRINTF("bulk read error, %s\n",
698                     usbd_errstr(error));
699
700                 if (error != USB_ERR_CANCELLED) {
701                         /* try to clear stall first */
702                         usbd_xfer_set_stall(xfer);
703                         goto tr_setup;
704                 }
705                 return;
706         }
707 }
708
709 static void
710 udav_intr_callback(struct usb_xfer *xfer, usb_error_t error)
711 {
712         switch (USB_GET_STATE(xfer)) {
713         case USB_ST_TRANSFERRED:
714         case USB_ST_SETUP:
715 tr_setup:
716                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
717                 usbd_transfer_submit(xfer);
718                 return;
719
720         default:                        /* Error */
721                 if (error != USB_ERR_CANCELLED) {
722                         /* try to clear stall first */
723                         usbd_xfer_set_stall(xfer);
724                         goto tr_setup;
725                 }
726                 return;
727         }
728 }
729
730 static void
731 udav_stop(struct usb_ether *ue)
732 {
733         struct udav_softc *sc = ue->ue_sc;
734         struct ifnet *ifp = uether_getifp(&sc->sc_ue);
735
736         UDAV_LOCK_ASSERT(sc, MA_OWNED);
737
738         ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
739         if (!(sc->sc_flags & UDAV_FLAG_NO_PHY))
740                 sc->sc_flags &= ~UDAV_FLAG_LINK;
741
742         /*
743          * stop all the transfers, if not already stopped:
744          */
745         usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_WR]);
746         usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_RD]);
747         usbd_transfer_stop(sc->sc_xfer[UDAV_INTR_DT_RD]);
748
749         udav_reset(sc);
750 }
751
752 static int
753 udav_ifmedia_upd(struct ifnet *ifp)
754 {
755         struct udav_softc *sc = ifp->if_softc;
756         struct mii_data *mii = GET_MII(sc);
757         struct mii_softc *miisc;
758         int error;
759
760         UDAV_LOCK_ASSERT(sc, MA_OWNED);
761
762         sc->sc_flags &= ~UDAV_FLAG_LINK;
763         LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
764                 PHY_RESET(miisc);
765         error = mii_mediachg(mii);
766         return (error);
767 }
768
769 static void
770 udav_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr)
771 {
772         struct udav_softc *sc = ifp->if_softc;
773         struct mii_data *mii = GET_MII(sc);
774
775         UDAV_LOCK(sc);
776         mii_pollstat(mii);
777         ifmr->ifm_active = mii->mii_media_active;
778         ifmr->ifm_status = mii->mii_media_status;
779         UDAV_UNLOCK(sc);
780 }
781
782 static void
783 udav_tick(struct usb_ether *ue)
784 {
785         struct udav_softc *sc = ue->ue_sc;
786         struct mii_data *mii = GET_MII(sc);
787
788         UDAV_LOCK_ASSERT(sc, MA_OWNED);
789
790         mii_tick(mii);
791         if ((sc->sc_flags & UDAV_FLAG_LINK) == 0
792             && mii->mii_media_status & IFM_ACTIVE &&
793             IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
794                 sc->sc_flags |= UDAV_FLAG_LINK;
795                 udav_start(ue);
796         }
797 }
798
799 static int
800 udav_miibus_readreg(device_t dev, int phy, int reg)
801 {
802         struct udav_softc *sc = device_get_softc(dev);
803         uint16_t data16;
804         uint8_t val[2];
805         int locked;
806
807         /* XXX: one PHY only for the internal PHY */
808         if (phy != 0)
809                 return (0);
810
811         locked = mtx_owned(&sc->sc_mtx);
812         if (!locked)
813                 UDAV_LOCK(sc);
814
815         /* select internal PHY and set PHY register address */
816         udav_csr_write1(sc, UDAV_EPAR,
817             UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK));
818
819         /* select PHY operation and start read command */
820         udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRR);
821
822         /* XXX: should we wait? */
823
824         /* end read command */
825         UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRR);
826
827         /* retrieve the result from data registers */
828         udav_csr_read(sc, UDAV_EPDRL, val, 2);
829
830         data16 = (val[0] | (val[1] << 8));
831
832         DPRINTFN(11, "phy=%d reg=0x%04x => 0x%04x\n",
833             phy, reg, data16);
834
835         if (!locked)
836                 UDAV_UNLOCK(sc);
837         return (data16);
838 }
839
840 static int
841 udav_miibus_writereg(device_t dev, int phy, int reg, int data)
842 {
843         struct udav_softc *sc = device_get_softc(dev);
844         uint8_t val[2];
845         int locked;
846
847         /* XXX: one PHY only for the internal PHY */
848         if (phy != 0)
849                 return (0);
850
851         locked = mtx_owned(&sc->sc_mtx);
852         if (!locked)
853                 UDAV_LOCK(sc);
854
855         /* select internal PHY and set PHY register address */
856         udav_csr_write1(sc, UDAV_EPAR,
857             UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK));
858
859         /* put the value to the data registers */
860         val[0] = (data & 0xff);
861         val[1] = (data >> 8) & 0xff;
862         udav_csr_write(sc, UDAV_EPDRL, val, 2);
863
864         /* select PHY operation and start write command */
865         udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRW);
866
867         /* XXX: should we wait? */
868
869         /* end write command */
870         UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRW);
871
872         if (!locked)
873                 UDAV_UNLOCK(sc);
874         return (0);
875 }
876
877 static void
878 udav_miibus_statchg(device_t dev)
879 {
880         /* nothing to do */
881 }