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 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 2003
7 * Shingo WATANABE <nabe@nabechan.org>. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the author nor the names of any co-contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 */
34
35 /*
36 * DM9601(DAVICOM USB to Ethernet MAC Controller with Integrated 10/100 PHY)
37 * The spec can be found at the following url.
38 * http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf
39 */
40
41 /*
42 * TODO:
43 * Interrupt Endpoint support
44 * External PHYs
45 */
46
47 #include <sys/cdefs.h>
48 #include <sys/stdint.h>
49 #include <sys/stddef.h>
50 #include <sys/param.h>
51 #include <sys/queue.h>
52 #include <sys/types.h>
53 #include <sys/systm.h>
54 #include <sys/socket.h>
55 #include <sys/kernel.h>
56 #include <sys/bus.h>
57 #include <sys/module.h>
58 #include <sys/lock.h>
59 #include <sys/mutex.h>
60 #include <sys/condvar.h>
61 #include <sys/sysctl.h>
62 #include <sys/sx.h>
63 #include <sys/unistd.h>
64 #include <sys/callout.h>
65 #include <sys/malloc.h>
66 #include <sys/priv.h>
67
68 #include <net/if.h>
69 #include <net/if_var.h>
70 #include <net/if_media.h>
71
72 #include <dev/mii/mii.h>
73 #include <dev/mii/miivar.h>
74
75 #include <dev/usb/usb.h>
76 #include <dev/usb/usbdi.h>
77 #include <dev/usb/usbdi_util.h>
78 #include "usbdevs.h"
79
80 #include "miibus_if.h"
81
82 #define USB_DEBUG_VAR udav_debug
83 #include <dev/usb/usb_debug.h>
84 #include <dev/usb/usb_process.h>
85
86 #include <dev/usb/net/usb_ethernet.h>
87 #include <dev/usb/net/if_udavreg.h>
88
89 /* prototypes */
90
91 static device_probe_t udav_probe;
92 static device_attach_t udav_attach;
93 static device_detach_t udav_detach;
94
95 static usb_callback_t udav_bulk_write_callback;
96 static usb_callback_t udav_bulk_read_callback;
97 static usb_callback_t udav_intr_callback;
98
99 static uether_fn_t udav_attach_post;
100 static uether_fn_t udav_init;
101 static uether_fn_t udav_stop;
102 static uether_fn_t udav_start;
103 static uether_fn_t udav_tick;
104 static uether_fn_t udav_setmulti;
105 static uether_fn_t udav_setpromisc;
106
107 static int udav_csr_read(struct udav_softc *, uint16_t, void *, int);
108 static int udav_csr_write(struct udav_softc *, uint16_t, void *, int);
109 static uint8_t udav_csr_read1(struct udav_softc *, uint16_t);
110 static int udav_csr_write1(struct udav_softc *, uint16_t, uint8_t);
111 static void udav_reset(struct udav_softc *);
112 static int udav_ifmedia_upd(if_t);
113 static void udav_ifmedia_status(if_t, struct ifmediareq *);
114
115 static miibus_readreg_t udav_miibus_readreg;
116 static miibus_writereg_t udav_miibus_writereg;
117 static miibus_statchg_t udav_miibus_statchg;
118
119 static const struct usb_config udav_config[UDAV_N_TRANSFER] = {
120 [UDAV_BULK_DT_WR] = {
121 .type = UE_BULK,
122 .endpoint = UE_ADDR_ANY,
123 .direction = UE_DIR_OUT,
124 .bufsize = (MCLBYTES + 2),
125 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
126 .callback = udav_bulk_write_callback,
127 .timeout = 10000, /* 10 seconds */
128 },
129
130 [UDAV_BULK_DT_RD] = {
131 .type = UE_BULK,
132 .endpoint = UE_ADDR_ANY,
133 .direction = UE_DIR_IN,
134 .bufsize = (MCLBYTES + 3),
135 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
136 .callback = udav_bulk_read_callback,
137 .timeout = 0, /* no timeout */
138 },
139
140 [UDAV_INTR_DT_RD] = {
141 .type = UE_INTERRUPT,
142 .endpoint = UE_ADDR_ANY,
143 .direction = UE_DIR_IN,
144 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
145 .bufsize = 0, /* use wMaxPacketSize */
146 .callback = udav_intr_callback,
147 },
148 };
149
150 static device_method_t udav_methods[] = {
151 /* Device interface */
152 DEVMETHOD(device_probe, udav_probe),
153 DEVMETHOD(device_attach, udav_attach),
154 DEVMETHOD(device_detach, udav_detach),
155
156 /* MII interface */
157 DEVMETHOD(miibus_readreg, udav_miibus_readreg),
158 DEVMETHOD(miibus_writereg, udav_miibus_writereg),
159 DEVMETHOD(miibus_statchg, udav_miibus_statchg),
160
161 DEVMETHOD_END
162 };
163
164 static driver_t udav_driver = {
165 .name = "udav",
166 .methods = udav_methods,
167 .size = sizeof(struct udav_softc),
168 };
169
170 static const STRUCT_USB_HOST_ID udav_devs[] = {
171 /* ShanTou DM9601 USB NIC */
172 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_DM9601, 0)},
173 /* ShanTou ST268 USB NIC */
174 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ST268, 0)},
175 /* Corega USB-TXC */
176 {USB_VPI(USB_VENDOR_COREGA, USB_PRODUCT_COREGA_FETHER_USB_TXC, 0)},
177 /* ShanTou AMD8515 USB NIC */
178 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ADM8515, 0)},
179 /* Kontron AG USB Ethernet */
180 {USB_VPI(USB_VENDOR_KONTRON, USB_PRODUCT_KONTRON_DM9601, 0)},
181 {USB_VPI(USB_VENDOR_KONTRON, USB_PRODUCT_KONTRON_JP1082,
182 UDAV_FLAG_NO_PHY)},
183 };
184
185 DRIVER_MODULE(udav, uhub, udav_driver, NULL, NULL);
186 DRIVER_MODULE(miibus, udav, miibus_driver, 0, 0);
187 MODULE_DEPEND(udav, uether, 1, 1, 1);
188 MODULE_DEPEND(udav, usb, 1, 1, 1);
189 MODULE_DEPEND(udav, ether, 1, 1, 1);
190 MODULE_DEPEND(udav, miibus, 1, 1, 1);
191 MODULE_VERSION(udav, 1);
192 USB_PNP_HOST_INFO(udav_devs);
193
194 static const struct usb_ether_methods udav_ue_methods = {
195 .ue_attach_post = udav_attach_post,
196 .ue_start = udav_start,
197 .ue_init = udav_init,
198 .ue_stop = udav_stop,
199 .ue_tick = udav_tick,
200 .ue_setmulti = udav_setmulti,
201 .ue_setpromisc = udav_setpromisc,
202 .ue_mii_upd = udav_ifmedia_upd,
203 .ue_mii_sts = udav_ifmedia_status,
204 };
205
206 static const struct usb_ether_methods udav_ue_methods_nophy = {
207 .ue_attach_post = udav_attach_post,
208 .ue_start = udav_start,
209 .ue_init = udav_init,
210 .ue_stop = udav_stop,
211 .ue_setmulti = udav_setmulti,
212 .ue_setpromisc = udav_setpromisc,
213 };
214
215 #ifdef USB_DEBUG
216 static int udav_debug = 0;
217
218 static SYSCTL_NODE(_hw_usb, OID_AUTO, udav, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
219 "USB udav");
220 SYSCTL_INT(_hw_usb_udav, OID_AUTO, debug, CTLFLAG_RWTUN, &udav_debug, 0,
221 "Debug level");
222 #endif
223
224 #define UDAV_SETBIT(sc, reg, x) \
225 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) | (x))
226
227 #define UDAV_CLRBIT(sc, reg, x) \
228 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) & ~(x))
229
230 static void
udav_attach_post(struct usb_ether * ue)231 udav_attach_post(struct usb_ether *ue)
232 {
233 struct udav_softc *sc = uether_getsc(ue);
234
235 /* reset the adapter */
236 udav_reset(sc);
237
238 /* Get Ethernet Address */
239 udav_csr_read(sc, UDAV_PAR, ue->ue_eaddr, ETHER_ADDR_LEN);
240 }
241
242 static int
udav_probe(device_t dev)243 udav_probe(device_t dev)
244 {
245 struct usb_attach_arg *uaa = device_get_ivars(dev);
246
247 if (uaa->usb_mode != USB_MODE_HOST)
248 return (ENXIO);
249 if (uaa->info.bConfigIndex != UDAV_CONFIG_INDEX)
250 return (ENXIO);
251 if (uaa->info.bIfaceIndex != UDAV_IFACE_INDEX)
252 return (ENXIO);
253
254 return (usbd_lookup_id_by_uaa(udav_devs, sizeof(udav_devs), uaa));
255 }
256
257 static int
udav_attach(device_t dev)258 udav_attach(device_t dev)
259 {
260 struct usb_attach_arg *uaa = device_get_ivars(dev);
261 struct udav_softc *sc = device_get_softc(dev);
262 struct usb_ether *ue = &sc->sc_ue;
263 uint8_t iface_index;
264 int error;
265
266 sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
267
268 device_set_usb_desc(dev);
269
270 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
271
272 iface_index = UDAV_IFACE_INDEX;
273 error = usbd_transfer_setup(uaa->device, &iface_index,
274 sc->sc_xfer, udav_config, UDAV_N_TRANSFER, sc, &sc->sc_mtx);
275 if (error) {
276 device_printf(dev, "allocating USB transfers failed\n");
277 goto detach;
278 }
279
280 /*
281 * The JP1082 has an unusable PHY and provides no link information.
282 */
283 if (sc->sc_flags & UDAV_FLAG_NO_PHY) {
284 ue->ue_methods = &udav_ue_methods_nophy;
285 sc->sc_flags |= UDAV_FLAG_LINK;
286 } else {
287 ue->ue_methods = &udav_ue_methods;
288 }
289
290 ue->ue_sc = sc;
291 ue->ue_dev = dev;
292 ue->ue_udev = uaa->device;
293 ue->ue_mtx = &sc->sc_mtx;
294
295 error = uether_ifattach(ue);
296 if (error) {
297 device_printf(dev, "could not attach interface\n");
298 goto detach;
299 }
300
301 return (0); /* success */
302
303 detach:
304 udav_detach(dev);
305 return (ENXIO); /* failure */
306 }
307
308 static int
udav_detach(device_t dev)309 udav_detach(device_t dev)
310 {
311 struct udav_softc *sc = device_get_softc(dev);
312 struct usb_ether *ue = &sc->sc_ue;
313
314 usbd_transfer_unsetup(sc->sc_xfer, UDAV_N_TRANSFER);
315 uether_ifdetach(ue);
316 mtx_destroy(&sc->sc_mtx);
317
318 return (0);
319 }
320
321 #if 0
322 static int
323 udav_mem_read(struct udav_softc *sc, uint16_t offset, void *buf,
324 int len)
325 {
326 struct usb_device_request req;
327
328 len &= 0xff;
329
330 req.bmRequestType = UT_READ_VENDOR_DEVICE;
331 req.bRequest = UDAV_REQ_MEM_READ;
332 USETW(req.wValue, 0x0000);
333 USETW(req.wIndex, offset);
334 USETW(req.wLength, len);
335
336 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
337 }
338
339 static int
340 udav_mem_write(struct udav_softc *sc, uint16_t offset, void *buf,
341 int len)
342 {
343 struct usb_device_request req;
344
345 len &= 0xff;
346
347 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
348 req.bRequest = UDAV_REQ_MEM_WRITE;
349 USETW(req.wValue, 0x0000);
350 USETW(req.wIndex, offset);
351 USETW(req.wLength, len);
352
353 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
354 }
355
356 static int
357 udav_mem_write1(struct udav_softc *sc, uint16_t offset,
358 uint8_t ch)
359 {
360 struct usb_device_request req;
361
362 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
363 req.bRequest = UDAV_REQ_MEM_WRITE1;
364 USETW(req.wValue, ch);
365 USETW(req.wIndex, offset);
366 USETW(req.wLength, 0x0000);
367
368 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
369 }
370 #endif
371
372 static int
udav_csr_read(struct udav_softc * sc,uint16_t offset,void * buf,int len)373 udav_csr_read(struct udav_softc *sc, uint16_t offset, void *buf, int len)
374 {
375 struct usb_device_request req;
376
377 len &= 0xff;
378
379 req.bmRequestType = UT_READ_VENDOR_DEVICE;
380 req.bRequest = UDAV_REQ_REG_READ;
381 USETW(req.wValue, 0x0000);
382 USETW(req.wIndex, offset);
383 USETW(req.wLength, len);
384
385 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
386 }
387
388 static int
udav_csr_write(struct udav_softc * sc,uint16_t offset,void * buf,int len)389 udav_csr_write(struct udav_softc *sc, uint16_t offset, void *buf, int len)
390 {
391 struct usb_device_request req;
392
393 offset &= 0xff;
394 len &= 0xff;
395
396 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
397 req.bRequest = UDAV_REQ_REG_WRITE;
398 USETW(req.wValue, 0x0000);
399 USETW(req.wIndex, offset);
400 USETW(req.wLength, len);
401
402 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
403 }
404
405 static uint8_t
udav_csr_read1(struct udav_softc * sc,uint16_t offset)406 udav_csr_read1(struct udav_softc *sc, uint16_t offset)
407 {
408 uint8_t val;
409
410 udav_csr_read(sc, offset, &val, 1);
411 return (val);
412 }
413
414 static int
udav_csr_write1(struct udav_softc * sc,uint16_t offset,uint8_t ch)415 udav_csr_write1(struct udav_softc *sc, uint16_t offset,
416 uint8_t ch)
417 {
418 struct usb_device_request req;
419
420 offset &= 0xff;
421
422 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
423 req.bRequest = UDAV_REQ_REG_WRITE1;
424 USETW(req.wValue, ch);
425 USETW(req.wIndex, offset);
426 USETW(req.wLength, 0x0000);
427
428 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
429 }
430
431 static void
udav_init(struct usb_ether * ue)432 udav_init(struct usb_ether *ue)
433 {
434 struct udav_softc *sc = ue->ue_sc;
435 if_t ifp = uether_getifp(&sc->sc_ue);
436
437 UDAV_LOCK_ASSERT(sc, MA_OWNED);
438
439 /*
440 * Cancel pending I/O
441 */
442 udav_stop(ue);
443
444 /* set MAC address */
445 udav_csr_write(sc, UDAV_PAR, if_getlladdr(ifp), ETHER_ADDR_LEN);
446
447 /* initialize network control register */
448
449 /* disable loopback */
450 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_LBK0 | UDAV_NCR_LBK1);
451
452 /* Initialize RX control register */
453 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_DIS_LONG | UDAV_RCR_DIS_CRC);
454
455 /* load multicast filter and update promiscious mode bit */
456 udav_setpromisc(ue);
457
458 /* enable RX */
459 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_RXEN);
460
461 /* clear POWER_DOWN state of internal PHY */
462 UDAV_SETBIT(sc, UDAV_GPCR, UDAV_GPCR_GEP_CNTL0);
463 UDAV_CLRBIT(sc, UDAV_GPR, UDAV_GPR_GEPIO0);
464
465 usbd_xfer_set_stall(sc->sc_xfer[UDAV_BULK_DT_WR]);
466
467 if_setdrvflagbits(ifp, IFF_DRV_RUNNING, 0);
468 udav_start(ue);
469 }
470
471 static void
udav_reset(struct udav_softc * sc)472 udav_reset(struct udav_softc *sc)
473 {
474 int i;
475
476 /* Select PHY */
477 #if 1
478 /*
479 * XXX: force select internal phy.
480 * external phy routines are not tested.
481 */
482 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
483 #else
484 if (sc->sc_flags & UDAV_EXT_PHY)
485 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
486 else
487 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
488 #endif
489
490 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_RST);
491
492 for (i = 0; i < UDAV_TX_TIMEOUT; i++) {
493 if (!(udav_csr_read1(sc, UDAV_NCR) & UDAV_NCR_RST))
494 break;
495 if (uether_pause(&sc->sc_ue, hz / 100))
496 break;
497 }
498
499 uether_pause(&sc->sc_ue, hz / 100);
500 }
501
502 static u_int
udav_hash_maddr(void * arg,struct sockaddr_dl * sdl,u_int cnt)503 udav_hash_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
504 {
505 uint8_t *hashtbl = arg;
506 int h;
507
508 h = ether_crc32_be(LLADDR(sdl), ETHER_ADDR_LEN) >> 26;
509 hashtbl[h / 8] |= 1 << (h % 8);
510
511 return (1);
512 }
513
514 static void
udav_setmulti(struct usb_ether * ue)515 udav_setmulti(struct usb_ether *ue)
516 {
517 struct udav_softc *sc = ue->ue_sc;
518 if_t ifp = uether_getifp(&sc->sc_ue);
519 uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
520
521 UDAV_LOCK_ASSERT(sc, MA_OWNED);
522
523 if (if_getflags(ifp) & IFF_ALLMULTI || if_getflags(ifp) & IFF_PROMISC) {
524 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC);
525 return;
526 }
527
528 /* first, zot all the existing hash bits */
529 memset(hashtbl, 0x00, sizeof(hashtbl));
530 hashtbl[7] |= 0x80; /* broadcast address */
531 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl));
532
533 /* now program new ones */
534 if_foreach_llmaddr(ifp, udav_hash_maddr, hashtbl);
535
536 /* disable all multicast */
537 UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL);
538
539 /* write hash value to the register */
540 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl));
541 }
542
543 static void
udav_setpromisc(struct usb_ether * ue)544 udav_setpromisc(struct usb_ether *ue)
545 {
546 struct udav_softc *sc = ue->ue_sc;
547 if_t ifp = uether_getifp(&sc->sc_ue);
548 uint8_t rxmode;
549
550 rxmode = udav_csr_read1(sc, UDAV_RCR);
551 rxmode &= ~(UDAV_RCR_ALL | UDAV_RCR_PRMSC);
552
553 if (if_getflags(ifp) & IFF_PROMISC)
554 rxmode |= UDAV_RCR_ALL | UDAV_RCR_PRMSC;
555 else if (if_getflags(ifp) & IFF_ALLMULTI)
556 rxmode |= UDAV_RCR_ALL;
557
558 /* write new mode bits */
559 udav_csr_write1(sc, UDAV_RCR, rxmode);
560 }
561
562 static void
udav_start(struct usb_ether * ue)563 udav_start(struct usb_ether *ue)
564 {
565 struct udav_softc *sc = ue->ue_sc;
566
567 /*
568 * start the USB transfers, if not already started:
569 */
570 usbd_transfer_start(sc->sc_xfer[UDAV_INTR_DT_RD]);
571 usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_RD]);
572 usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_WR]);
573 }
574
575 static void
udav_bulk_write_callback(struct usb_xfer * xfer,usb_error_t error)576 udav_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
577 {
578 struct udav_softc *sc = usbd_xfer_softc(xfer);
579 if_t ifp = uether_getifp(&sc->sc_ue);
580 struct usb_page_cache *pc;
581 struct mbuf *m;
582 int extra_len;
583 int temp_len;
584 uint8_t buf[2];
585
586 switch (USB_GET_STATE(xfer)) {
587 case USB_ST_TRANSFERRED:
588 DPRINTFN(11, "transfer complete\n");
589 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
590
591 /* FALLTHROUGH */
592 case USB_ST_SETUP:
593 tr_setup:
594 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0) {
595 /*
596 * don't send anything if there is no link !
597 */
598 return;
599 }
600 m = if_dequeue(ifp);
601
602 if (m == NULL)
603 return;
604 if (m->m_pkthdr.len > MCLBYTES)
605 m->m_pkthdr.len = MCLBYTES;
606 if (m->m_pkthdr.len < UDAV_MIN_FRAME_LEN) {
607 extra_len = UDAV_MIN_FRAME_LEN - m->m_pkthdr.len;
608 } else {
609 extra_len = 0;
610 }
611
612 temp_len = (m->m_pkthdr.len + extra_len);
613
614 /*
615 * the frame length is specified in the first 2 bytes of the
616 * buffer
617 */
618 buf[0] = (uint8_t)(temp_len);
619 buf[1] = (uint8_t)(temp_len >> 8);
620
621 temp_len += 2;
622
623 pc = usbd_xfer_get_frame(xfer, 0);
624 usbd_copy_in(pc, 0, buf, 2);
625 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
626
627 if (extra_len)
628 usbd_frame_zero(pc, temp_len - extra_len, extra_len);
629 /*
630 * if there's a BPF listener, bounce a copy
631 * of this frame to him:
632 */
633 BPF_MTAP(ifp, m);
634
635 m_freem(m);
636
637 usbd_xfer_set_frame_len(xfer, 0, temp_len);
638 usbd_transfer_submit(xfer);
639 return;
640
641 default: /* Error */
642 DPRINTFN(11, "transfer error, %s\n",
643 usbd_errstr(error));
644
645 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
646
647 if (error != USB_ERR_CANCELLED) {
648 /* try to clear stall first */
649 usbd_xfer_set_stall(xfer);
650 goto tr_setup;
651 }
652 return;
653 }
654 }
655
656 static void
udav_bulk_read_callback(struct usb_xfer * xfer,usb_error_t error)657 udav_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
658 {
659 struct udav_softc *sc = usbd_xfer_softc(xfer);
660 struct usb_ether *ue = &sc->sc_ue;
661 if_t ifp = uether_getifp(ue);
662 struct usb_page_cache *pc;
663 struct udav_rxpkt stat;
664 int len;
665 int actlen;
666
667 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
668
669 switch (USB_GET_STATE(xfer)) {
670 case USB_ST_TRANSFERRED:
671
672 if (actlen < (int)(sizeof(stat) + ETHER_CRC_LEN)) {
673 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
674 goto tr_setup;
675 }
676 pc = usbd_xfer_get_frame(xfer, 0);
677 usbd_copy_out(pc, 0, &stat, sizeof(stat));
678 actlen -= sizeof(stat);
679 len = min(actlen, le16toh(stat.pktlen));
680 len -= ETHER_CRC_LEN;
681
682 if (stat.rxstat & UDAV_RSR_LCS) {
683 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1);
684 goto tr_setup;
685 }
686 if (stat.rxstat & UDAV_RSR_ERR) {
687 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
688 goto tr_setup;
689 }
690 uether_rxbuf(ue, pc, sizeof(stat), len);
691 /* FALLTHROUGH */
692 case USB_ST_SETUP:
693 tr_setup:
694 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
695 usbd_transfer_submit(xfer);
696 uether_rxflush(ue);
697 return;
698
699 default: /* Error */
700 DPRINTF("bulk read error, %s\n",
701 usbd_errstr(error));
702
703 if (error != USB_ERR_CANCELLED) {
704 /* try to clear stall first */
705 usbd_xfer_set_stall(xfer);
706 goto tr_setup;
707 }
708 return;
709 }
710 }
711
712 static void
udav_intr_callback(struct usb_xfer * xfer,usb_error_t error)713 udav_intr_callback(struct usb_xfer *xfer, usb_error_t error)
714 {
715 switch (USB_GET_STATE(xfer)) {
716 case USB_ST_TRANSFERRED:
717 case USB_ST_SETUP:
718 tr_setup:
719 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
720 usbd_transfer_submit(xfer);
721 return;
722
723 default: /* Error */
724 if (error != USB_ERR_CANCELLED) {
725 /* try to clear stall first */
726 usbd_xfer_set_stall(xfer);
727 goto tr_setup;
728 }
729 return;
730 }
731 }
732
733 static void
udav_stop(struct usb_ether * ue)734 udav_stop(struct usb_ether *ue)
735 {
736 struct udav_softc *sc = ue->ue_sc;
737 if_t ifp = uether_getifp(&sc->sc_ue);
738
739 UDAV_LOCK_ASSERT(sc, MA_OWNED);
740
741 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING);
742 if (!(sc->sc_flags & UDAV_FLAG_NO_PHY))
743 sc->sc_flags &= ~UDAV_FLAG_LINK;
744
745 /*
746 * stop all the transfers, if not already stopped:
747 */
748 usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_WR]);
749 usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_RD]);
750 usbd_transfer_stop(sc->sc_xfer[UDAV_INTR_DT_RD]);
751
752 udav_reset(sc);
753 }
754
755 static int
udav_ifmedia_upd(if_t ifp)756 udav_ifmedia_upd(if_t ifp)
757 {
758 struct udav_softc *sc = if_getsoftc(ifp);
759 struct mii_data *mii = GET_MII(sc);
760 struct mii_softc *miisc;
761 int error;
762
763 UDAV_LOCK_ASSERT(sc, MA_OWNED);
764
765 sc->sc_flags &= ~UDAV_FLAG_LINK;
766 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
767 PHY_RESET(miisc);
768 error = mii_mediachg(mii);
769 return (error);
770 }
771
772 static void
udav_ifmedia_status(if_t ifp,struct ifmediareq * ifmr)773 udav_ifmedia_status(if_t ifp, struct ifmediareq *ifmr)
774 {
775 struct udav_softc *sc = if_getsoftc(ifp);
776 struct mii_data *mii = GET_MII(sc);
777
778 UDAV_LOCK(sc);
779 mii_pollstat(mii);
780 ifmr->ifm_active = mii->mii_media_active;
781 ifmr->ifm_status = mii->mii_media_status;
782 UDAV_UNLOCK(sc);
783 }
784
785 static void
udav_tick(struct usb_ether * ue)786 udav_tick(struct usb_ether *ue)
787 {
788 struct udav_softc *sc = ue->ue_sc;
789 struct mii_data *mii = GET_MII(sc);
790
791 UDAV_LOCK_ASSERT(sc, MA_OWNED);
792
793 mii_tick(mii);
794 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0
795 && mii->mii_media_status & IFM_ACTIVE &&
796 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
797 sc->sc_flags |= UDAV_FLAG_LINK;
798 udav_start(ue);
799 }
800 }
801
802 static int
udav_miibus_readreg(device_t dev,int phy,int reg)803 udav_miibus_readreg(device_t dev, int phy, int reg)
804 {
805 struct udav_softc *sc = device_get_softc(dev);
806 uint16_t data16;
807 uint8_t val[2];
808 int locked;
809
810 /* XXX: one PHY only for the internal PHY */
811 if (phy != 0)
812 return (0);
813
814 locked = mtx_owned(&sc->sc_mtx);
815 if (!locked)
816 UDAV_LOCK(sc);
817
818 /* select internal PHY and set PHY register address */
819 udav_csr_write1(sc, UDAV_EPAR,
820 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK));
821
822 /* select PHY operation and start read command */
823 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRR);
824
825 /* XXX: should we wait? */
826
827 /* end read command */
828 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRR);
829
830 /* retrieve the result from data registers */
831 udav_csr_read(sc, UDAV_EPDRL, val, 2);
832
833 data16 = (val[0] | (val[1] << 8));
834
835 DPRINTFN(11, "phy=%d reg=0x%04x => 0x%04x\n",
836 phy, reg, data16);
837
838 if (!locked)
839 UDAV_UNLOCK(sc);
840 return (data16);
841 }
842
843 static int
udav_miibus_writereg(device_t dev,int phy,int reg,int data)844 udav_miibus_writereg(device_t dev, int phy, int reg, int data)
845 {
846 struct udav_softc *sc = device_get_softc(dev);
847 uint8_t val[2];
848 int locked;
849
850 /* XXX: one PHY only for the internal PHY */
851 if (phy != 0)
852 return (0);
853
854 locked = mtx_owned(&sc->sc_mtx);
855 if (!locked)
856 UDAV_LOCK(sc);
857
858 /* select internal PHY and set PHY register address */
859 udav_csr_write1(sc, UDAV_EPAR,
860 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK));
861
862 /* put the value to the data registers */
863 val[0] = (data & 0xff);
864 val[1] = (data >> 8) & 0xff;
865 udav_csr_write(sc, UDAV_EPDRL, val, 2);
866
867 /* select PHY operation and start write command */
868 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRW);
869
870 /* XXX: should we wait? */
871
872 /* end write command */
873 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRW);
874
875 if (!locked)
876 UDAV_UNLOCK(sc);
877 return (0);
878 }
879
880 static void
udav_miibus_statchg(device_t dev)881 udav_miibus_statchg(device_t dev)
882 {
883 /* nothing to do */
884 }
885