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(struct ifnet *);
113 static void udav_ifmedia_status(struct ifnet *, 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 devclass_t udav_devclass;
171
172 static const STRUCT_USB_HOST_ID udav_devs[] = {
173 /* ShanTou DM9601 USB NIC */
174 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_DM9601, 0)},
175 /* ShanTou ST268 USB NIC */
176 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ST268, 0)},
177 /* Corega USB-TXC */
178 {USB_VPI(USB_VENDOR_COREGA, USB_PRODUCT_COREGA_FETHER_USB_TXC, 0)},
179 /* ShanTou AMD8515 USB NIC */
180 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ADM8515, 0)},
181 /* Kontron AG USB Ethernet */
182 {USB_VPI(USB_VENDOR_KONTRON, USB_PRODUCT_KONTRON_DM9601, 0)},
183 {USB_VPI(USB_VENDOR_KONTRON, USB_PRODUCT_KONTRON_JP1082,
184 UDAV_FLAG_NO_PHY)},
185 };
186
187 DRIVER_MODULE(udav, uhub, udav_driver, udav_devclass, NULL, 0);
188 DRIVER_MODULE(miibus, udav, miibus_driver, miibus_devclass, 0, 0);
189 MODULE_DEPEND(udav, uether, 1, 1, 1);
190 MODULE_DEPEND(udav, usb, 1, 1, 1);
191 MODULE_DEPEND(udav, ether, 1, 1, 1);
192 MODULE_DEPEND(udav, miibus, 1, 1, 1);
193 MODULE_VERSION(udav, 1);
194 USB_PNP_HOST_INFO(udav_devs);
195
196 static const struct usb_ether_methods udav_ue_methods = {
197 .ue_attach_post = udav_attach_post,
198 .ue_start = udav_start,
199 .ue_init = udav_init,
200 .ue_stop = udav_stop,
201 .ue_tick = udav_tick,
202 .ue_setmulti = udav_setmulti,
203 .ue_setpromisc = udav_setpromisc,
204 .ue_mii_upd = udav_ifmedia_upd,
205 .ue_mii_sts = udav_ifmedia_status,
206 };
207
208 static const struct usb_ether_methods udav_ue_methods_nophy = {
209 .ue_attach_post = udav_attach_post,
210 .ue_start = udav_start,
211 .ue_init = udav_init,
212 .ue_stop = udav_stop,
213 .ue_setmulti = udav_setmulti,
214 .ue_setpromisc = udav_setpromisc,
215 };
216
217 #ifdef USB_DEBUG
218 static int udav_debug = 0;
219
220 static SYSCTL_NODE(_hw_usb, OID_AUTO, udav, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
221 "USB udav");
222 SYSCTL_INT(_hw_usb_udav, OID_AUTO, debug, CTLFLAG_RWTUN, &udav_debug, 0,
223 "Debug level");
224 #endif
225
226 #define UDAV_SETBIT(sc, reg, x) \
227 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) | (x))
228
229 #define UDAV_CLRBIT(sc, reg, x) \
230 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) & ~(x))
231
232 static void
udav_attach_post(struct usb_ether * ue)233 udav_attach_post(struct usb_ether *ue)
234 {
235 struct udav_softc *sc = uether_getsc(ue);
236
237 /* reset the adapter */
238 udav_reset(sc);
239
240 /* Get Ethernet Address */
241 udav_csr_read(sc, UDAV_PAR, ue->ue_eaddr, ETHER_ADDR_LEN);
242 }
243
244 static int
udav_probe(device_t dev)245 udav_probe(device_t dev)
246 {
247 struct usb_attach_arg *uaa = device_get_ivars(dev);
248
249 if (uaa->usb_mode != USB_MODE_HOST)
250 return (ENXIO);
251 if (uaa->info.bConfigIndex != UDAV_CONFIG_INDEX)
252 return (ENXIO);
253 if (uaa->info.bIfaceIndex != UDAV_IFACE_INDEX)
254 return (ENXIO);
255
256 return (usbd_lookup_id_by_uaa(udav_devs, sizeof(udav_devs), uaa));
257 }
258
259 static int
udav_attach(device_t dev)260 udav_attach(device_t dev)
261 {
262 struct usb_attach_arg *uaa = device_get_ivars(dev);
263 struct udav_softc *sc = device_get_softc(dev);
264 struct usb_ether *ue = &sc->sc_ue;
265 uint8_t iface_index;
266 int error;
267
268 sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
269
270 device_set_usb_desc(dev);
271
272 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
273
274 iface_index = UDAV_IFACE_INDEX;
275 error = usbd_transfer_setup(uaa->device, &iface_index,
276 sc->sc_xfer, udav_config, UDAV_N_TRANSFER, sc, &sc->sc_mtx);
277 if (error) {
278 device_printf(dev, "allocating USB transfers failed\n");
279 goto detach;
280 }
281
282 /*
283 * The JP1082 has an unusable PHY and provides no link information.
284 */
285 if (sc->sc_flags & UDAV_FLAG_NO_PHY) {
286 ue->ue_methods = &udav_ue_methods_nophy;
287 sc->sc_flags |= UDAV_FLAG_LINK;
288 } else {
289 ue->ue_methods = &udav_ue_methods;
290 }
291
292 ue->ue_sc = sc;
293 ue->ue_dev = dev;
294 ue->ue_udev = uaa->device;
295 ue->ue_mtx = &sc->sc_mtx;
296
297 error = uether_ifattach(ue);
298 if (error) {
299 device_printf(dev, "could not attach interface\n");
300 goto detach;
301 }
302
303 return (0); /* success */
304
305 detach:
306 udav_detach(dev);
307 return (ENXIO); /* failure */
308 }
309
310 static int
udav_detach(device_t dev)311 udav_detach(device_t dev)
312 {
313 struct udav_softc *sc = device_get_softc(dev);
314 struct usb_ether *ue = &sc->sc_ue;
315
316 usbd_transfer_unsetup(sc->sc_xfer, UDAV_N_TRANSFER);
317 uether_ifdetach(ue);
318 mtx_destroy(&sc->sc_mtx);
319
320 return (0);
321 }
322
323 #if 0
324 static int
325 udav_mem_read(struct udav_softc *sc, uint16_t offset, void *buf,
326 int len)
327 {
328 struct usb_device_request req;
329
330 len &= 0xff;
331
332 req.bmRequestType = UT_READ_VENDOR_DEVICE;
333 req.bRequest = UDAV_REQ_MEM_READ;
334 USETW(req.wValue, 0x0000);
335 USETW(req.wIndex, offset);
336 USETW(req.wLength, len);
337
338 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
339 }
340
341 static int
342 udav_mem_write(struct udav_softc *sc, uint16_t offset, void *buf,
343 int len)
344 {
345 struct usb_device_request req;
346
347 len &= 0xff;
348
349 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
350 req.bRequest = UDAV_REQ_MEM_WRITE;
351 USETW(req.wValue, 0x0000);
352 USETW(req.wIndex, offset);
353 USETW(req.wLength, len);
354
355 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
356 }
357
358 static int
359 udav_mem_write1(struct udav_softc *sc, uint16_t offset,
360 uint8_t ch)
361 {
362 struct usb_device_request req;
363
364 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
365 req.bRequest = UDAV_REQ_MEM_WRITE1;
366 USETW(req.wValue, ch);
367 USETW(req.wIndex, offset);
368 USETW(req.wLength, 0x0000);
369
370 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
371 }
372 #endif
373
374 static int
udav_csr_read(struct udav_softc * sc,uint16_t offset,void * buf,int len)375 udav_csr_read(struct udav_softc *sc, uint16_t offset, void *buf, int len)
376 {
377 struct usb_device_request req;
378
379 len &= 0xff;
380
381 req.bmRequestType = UT_READ_VENDOR_DEVICE;
382 req.bRequest = UDAV_REQ_REG_READ;
383 USETW(req.wValue, 0x0000);
384 USETW(req.wIndex, offset);
385 USETW(req.wLength, len);
386
387 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
388 }
389
390 static int
udav_csr_write(struct udav_softc * sc,uint16_t offset,void * buf,int len)391 udav_csr_write(struct udav_softc *sc, uint16_t offset, void *buf, int len)
392 {
393 struct usb_device_request req;
394
395 offset &= 0xff;
396 len &= 0xff;
397
398 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
399 req.bRequest = UDAV_REQ_REG_WRITE;
400 USETW(req.wValue, 0x0000);
401 USETW(req.wIndex, offset);
402 USETW(req.wLength, len);
403
404 return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
405 }
406
407 static uint8_t
udav_csr_read1(struct udav_softc * sc,uint16_t offset)408 udav_csr_read1(struct udav_softc *sc, uint16_t offset)
409 {
410 uint8_t val;
411
412 udav_csr_read(sc, offset, &val, 1);
413 return (val);
414 }
415
416 static int
udav_csr_write1(struct udav_softc * sc,uint16_t offset,uint8_t ch)417 udav_csr_write1(struct udav_softc *sc, uint16_t offset,
418 uint8_t ch)
419 {
420 struct usb_device_request req;
421
422 offset &= 0xff;
423
424 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
425 req.bRequest = UDAV_REQ_REG_WRITE1;
426 USETW(req.wValue, ch);
427 USETW(req.wIndex, offset);
428 USETW(req.wLength, 0x0000);
429
430 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
431 }
432
433 static void
udav_init(struct usb_ether * ue)434 udav_init(struct usb_ether *ue)
435 {
436 struct udav_softc *sc = ue->ue_sc;
437 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
438
439 UDAV_LOCK_ASSERT(sc, MA_OWNED);
440
441 /*
442 * Cancel pending I/O
443 */
444 udav_stop(ue);
445
446 /* set MAC address */
447 udav_csr_write(sc, UDAV_PAR, IF_LLADDR(ifp), ETHER_ADDR_LEN);
448
449 /* initialize network control register */
450
451 /* disable loopback */
452 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_LBK0 | UDAV_NCR_LBK1);
453
454 /* Initialize RX control register */
455 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_DIS_LONG | UDAV_RCR_DIS_CRC);
456
457 /* load multicast filter and update promiscious mode bit */
458 udav_setpromisc(ue);
459
460 /* enable RX */
461 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_RXEN);
462
463 /* clear POWER_DOWN state of internal PHY */
464 UDAV_SETBIT(sc, UDAV_GPCR, UDAV_GPCR_GEP_CNTL0);
465 UDAV_CLRBIT(sc, UDAV_GPR, UDAV_GPR_GEPIO0);
466
467 usbd_xfer_set_stall(sc->sc_xfer[UDAV_BULK_DT_WR]);
468
469 ifp->if_drv_flags |= IFF_DRV_RUNNING;
470 udav_start(ue);
471 }
472
473 static void
udav_reset(struct udav_softc * sc)474 udav_reset(struct udav_softc *sc)
475 {
476 int i;
477
478 /* Select PHY */
479 #if 1
480 /*
481 * XXX: force select internal phy.
482 * external phy routines are not tested.
483 */
484 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
485 #else
486 if (sc->sc_flags & UDAV_EXT_PHY)
487 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
488 else
489 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY);
490 #endif
491
492 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_RST);
493
494 for (i = 0; i < UDAV_TX_TIMEOUT; i++) {
495 if (!(udav_csr_read1(sc, UDAV_NCR) & UDAV_NCR_RST))
496 break;
497 if (uether_pause(&sc->sc_ue, hz / 100))
498 break;
499 }
500
501 uether_pause(&sc->sc_ue, hz / 100);
502 }
503
504 static u_int
udav_hash_maddr(void * arg,struct sockaddr_dl * sdl,u_int cnt)505 udav_hash_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
506 {
507 uint8_t *hashtbl = arg;
508 int h;
509
510 h = ether_crc32_be(LLADDR(sdl), ETHER_ADDR_LEN) >> 26;
511 hashtbl[h / 8] |= 1 << (h % 8);
512
513 return (1);
514 }
515
516 static void
udav_setmulti(struct usb_ether * ue)517 udav_setmulti(struct usb_ether *ue)
518 {
519 struct udav_softc *sc = ue->ue_sc;
520 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
521 uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
522
523 UDAV_LOCK_ASSERT(sc, MA_OWNED);
524
525 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
526 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC);
527 return;
528 }
529
530 /* first, zot all the existing hash bits */
531 memset(hashtbl, 0x00, sizeof(hashtbl));
532 hashtbl[7] |= 0x80; /* broadcast address */
533 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl));
534
535 /* now program new ones */
536 if_foreach_llmaddr(ifp, udav_hash_maddr, hashtbl);
537
538 /* disable all multicast */
539 UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL);
540
541 /* write hash value to the register */
542 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl));
543 }
544
545 static void
udav_setpromisc(struct usb_ether * ue)546 udav_setpromisc(struct usb_ether *ue)
547 {
548 struct udav_softc *sc = ue->ue_sc;
549 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
550 uint8_t rxmode;
551
552 rxmode = udav_csr_read1(sc, UDAV_RCR);
553 rxmode &= ~(UDAV_RCR_ALL | UDAV_RCR_PRMSC);
554
555 if (ifp->if_flags & IFF_PROMISC)
556 rxmode |= UDAV_RCR_ALL | UDAV_RCR_PRMSC;
557 else if (ifp->if_flags & IFF_ALLMULTI)
558 rxmode |= UDAV_RCR_ALL;
559
560 /* write new mode bits */
561 udav_csr_write1(sc, UDAV_RCR, rxmode);
562 }
563
564 static void
udav_start(struct usb_ether * ue)565 udav_start(struct usb_ether *ue)
566 {
567 struct udav_softc *sc = ue->ue_sc;
568
569 /*
570 * start the USB transfers, if not already started:
571 */
572 usbd_transfer_start(sc->sc_xfer[UDAV_INTR_DT_RD]);
573 usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_RD]);
574 usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_WR]);
575 }
576
577 static void
udav_bulk_write_callback(struct usb_xfer * xfer,usb_error_t error)578 udav_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
579 {
580 struct udav_softc *sc = usbd_xfer_softc(xfer);
581 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
582 struct usb_page_cache *pc;
583 struct mbuf *m;
584 int extra_len;
585 int temp_len;
586 uint8_t buf[2];
587
588 switch (USB_GET_STATE(xfer)) {
589 case USB_ST_TRANSFERRED:
590 DPRINTFN(11, "transfer complete\n");
591 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
592
593 /* FALLTHROUGH */
594 case USB_ST_SETUP:
595 tr_setup:
596 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0) {
597 /*
598 * don't send anything if there is no link !
599 */
600 return;
601 }
602 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
603
604 if (m == NULL)
605 return;
606 if (m->m_pkthdr.len > MCLBYTES)
607 m->m_pkthdr.len = MCLBYTES;
608 if (m->m_pkthdr.len < UDAV_MIN_FRAME_LEN) {
609 extra_len = UDAV_MIN_FRAME_LEN - m->m_pkthdr.len;
610 } else {
611 extra_len = 0;
612 }
613
614 temp_len = (m->m_pkthdr.len + extra_len);
615
616 /*
617 * the frame length is specified in the first 2 bytes of the
618 * buffer
619 */
620 buf[0] = (uint8_t)(temp_len);
621 buf[1] = (uint8_t)(temp_len >> 8);
622
623 temp_len += 2;
624
625 pc = usbd_xfer_get_frame(xfer, 0);
626 usbd_copy_in(pc, 0, buf, 2);
627 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
628
629 if (extra_len)
630 usbd_frame_zero(pc, temp_len - extra_len, extra_len);
631 /*
632 * if there's a BPF listener, bounce a copy
633 * of this frame to him:
634 */
635 BPF_MTAP(ifp, m);
636
637 m_freem(m);
638
639 usbd_xfer_set_frame_len(xfer, 0, temp_len);
640 usbd_transfer_submit(xfer);
641 return;
642
643 default: /* Error */
644 DPRINTFN(11, "transfer error, %s\n",
645 usbd_errstr(error));
646
647 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
648
649 if (error != USB_ERR_CANCELLED) {
650 /* try to clear stall first */
651 usbd_xfer_set_stall(xfer);
652 goto tr_setup;
653 }
654 return;
655 }
656 }
657
658 static void
udav_bulk_read_callback(struct usb_xfer * xfer,usb_error_t error)659 udav_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
660 {
661 struct udav_softc *sc = usbd_xfer_softc(xfer);
662 struct usb_ether *ue = &sc->sc_ue;
663 struct ifnet *ifp = uether_getifp(ue);
664 struct usb_page_cache *pc;
665 struct udav_rxpkt stat;
666 int len;
667 int actlen;
668
669 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
670
671 switch (USB_GET_STATE(xfer)) {
672 case USB_ST_TRANSFERRED:
673
674 if (actlen < (int)(sizeof(stat) + ETHER_CRC_LEN)) {
675 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
676 goto tr_setup;
677 }
678 pc = usbd_xfer_get_frame(xfer, 0);
679 usbd_copy_out(pc, 0, &stat, sizeof(stat));
680 actlen -= sizeof(stat);
681 len = min(actlen, le16toh(stat.pktlen));
682 len -= ETHER_CRC_LEN;
683
684 if (stat.rxstat & UDAV_RSR_LCS) {
685 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1);
686 goto tr_setup;
687 }
688 if (stat.rxstat & UDAV_RSR_ERR) {
689 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
690 goto tr_setup;
691 }
692 uether_rxbuf(ue, pc, sizeof(stat), len);
693 /* FALLTHROUGH */
694 case USB_ST_SETUP:
695 tr_setup:
696 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
697 usbd_transfer_submit(xfer);
698 uether_rxflush(ue);
699 return;
700
701 default: /* Error */
702 DPRINTF("bulk read error, %s\n",
703 usbd_errstr(error));
704
705 if (error != USB_ERR_CANCELLED) {
706 /* try to clear stall first */
707 usbd_xfer_set_stall(xfer);
708 goto tr_setup;
709 }
710 return;
711 }
712 }
713
714 static void
udav_intr_callback(struct usb_xfer * xfer,usb_error_t error)715 udav_intr_callback(struct usb_xfer *xfer, usb_error_t error)
716 {
717 switch (USB_GET_STATE(xfer)) {
718 case USB_ST_TRANSFERRED:
719 case USB_ST_SETUP:
720 tr_setup:
721 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
722 usbd_transfer_submit(xfer);
723 return;
724
725 default: /* Error */
726 if (error != USB_ERR_CANCELLED) {
727 /* try to clear stall first */
728 usbd_xfer_set_stall(xfer);
729 goto tr_setup;
730 }
731 return;
732 }
733 }
734
735 static void
udav_stop(struct usb_ether * ue)736 udav_stop(struct usb_ether *ue)
737 {
738 struct udav_softc *sc = ue->ue_sc;
739 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
740
741 UDAV_LOCK_ASSERT(sc, MA_OWNED);
742
743 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
744 if (!(sc->sc_flags & UDAV_FLAG_NO_PHY))
745 sc->sc_flags &= ~UDAV_FLAG_LINK;
746
747 /*
748 * stop all the transfers, if not already stopped:
749 */
750 usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_WR]);
751 usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_RD]);
752 usbd_transfer_stop(sc->sc_xfer[UDAV_INTR_DT_RD]);
753
754 udav_reset(sc);
755 }
756
757 static int
udav_ifmedia_upd(struct ifnet * ifp)758 udav_ifmedia_upd(struct ifnet *ifp)
759 {
760 struct udav_softc *sc = ifp->if_softc;
761 struct mii_data *mii = GET_MII(sc);
762 struct mii_softc *miisc;
763 int error;
764
765 UDAV_LOCK_ASSERT(sc, MA_OWNED);
766
767 sc->sc_flags &= ~UDAV_FLAG_LINK;
768 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
769 PHY_RESET(miisc);
770 error = mii_mediachg(mii);
771 return (error);
772 }
773
774 static void
udav_ifmedia_status(struct ifnet * ifp,struct ifmediareq * ifmr)775 udav_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr)
776 {
777 struct udav_softc *sc = ifp->if_softc;
778 struct mii_data *mii = GET_MII(sc);
779
780 UDAV_LOCK(sc);
781 mii_pollstat(mii);
782 ifmr->ifm_active = mii->mii_media_active;
783 ifmr->ifm_status = mii->mii_media_status;
784 UDAV_UNLOCK(sc);
785 }
786
787 static void
udav_tick(struct usb_ether * ue)788 udav_tick(struct usb_ether *ue)
789 {
790 struct udav_softc *sc = ue->ue_sc;
791 struct mii_data *mii = GET_MII(sc);
792
793 UDAV_LOCK_ASSERT(sc, MA_OWNED);
794
795 mii_tick(mii);
796 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0
797 && mii->mii_media_status & IFM_ACTIVE &&
798 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
799 sc->sc_flags |= UDAV_FLAG_LINK;
800 udav_start(ue);
801 }
802 }
803
804 static int
udav_miibus_readreg(device_t dev,int phy,int reg)805 udav_miibus_readreg(device_t dev, int phy, int reg)
806 {
807 struct udav_softc *sc = device_get_softc(dev);
808 uint16_t data16;
809 uint8_t val[2];
810 int locked;
811
812 /* XXX: one PHY only for the internal PHY */
813 if (phy != 0)
814 return (0);
815
816 locked = mtx_owned(&sc->sc_mtx);
817 if (!locked)
818 UDAV_LOCK(sc);
819
820 /* select internal PHY and set PHY register address */
821 udav_csr_write1(sc, UDAV_EPAR,
822 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK));
823
824 /* select PHY operation and start read command */
825 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRR);
826
827 /* XXX: should we wait? */
828
829 /* end read command */
830 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRR);
831
832 /* retrieve the result from data registers */
833 udav_csr_read(sc, UDAV_EPDRL, val, 2);
834
835 data16 = (val[0] | (val[1] << 8));
836
837 DPRINTFN(11, "phy=%d reg=0x%04x => 0x%04x\n",
838 phy, reg, data16);
839
840 if (!locked)
841 UDAV_UNLOCK(sc);
842 return (data16);
843 }
844
845 static int
udav_miibus_writereg(device_t dev,int phy,int reg,int data)846 udav_miibus_writereg(device_t dev, int phy, int reg, int data)
847 {
848 struct udav_softc *sc = device_get_softc(dev);
849 uint8_t val[2];
850 int locked;
851
852 /* XXX: one PHY only for the internal PHY */
853 if (phy != 0)
854 return (0);
855
856 locked = mtx_owned(&sc->sc_mtx);
857 if (!locked)
858 UDAV_LOCK(sc);
859
860 /* select internal PHY and set PHY register address */
861 udav_csr_write1(sc, UDAV_EPAR,
862 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK));
863
864 /* put the value to the data registers */
865 val[0] = (data & 0xff);
866 val[1] = (data >> 8) & 0xff;
867 udav_csr_write(sc, UDAV_EPDRL, val, 2);
868
869 /* select PHY operation and start write command */
870 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRW);
871
872 /* XXX: should we wait? */
873
874 /* end write command */
875 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRW);
876
877 if (!locked)
878 UDAV_UNLOCK(sc);
879 return (0);
880 }
881
882 static void
udav_miibus_statchg(device_t dev)883 udav_miibus_statchg(device_t dev)
884 {
885 /* nothing to do */
886 }
887