1 /* $NetBSD: uslsa.c,v 1.32 2022/07/29 13:07:14 rin Exp $ */
2
3 /* from ugensa.c */
4
5 /*
6 * Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Roland C. Dowdeswell <elric@netbsd.org>.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /*
35 * Copyright (c) 2007, 2009 Jonathan A. Kollasch.
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57 *
58 */
59
60 #include <sys/cdefs.h>
61 __KERNEL_RCSID(0, "$NetBSD: uslsa.c,v 1.32 2022/07/29 13:07:14 rin Exp $");
62
63 #ifdef _KERNEL_OPT
64 #include "opt_usb.h"
65 #endif
66
67 #include <sys/param.h>
68 #include <sys/systm.h>
69 #include <sys/kernel.h>
70 #include <sys/device.h>
71 #include <sys/conf.h>
72 #include <sys/tty.h>
73
74 #include <dev/usb/usb.h>
75
76 #include <dev/usb/usbdi.h>
77 #include <dev/usb/usbdi_util.h>
78 #include <dev/usb/usbdevs.h>
79
80 #include <dev/usb/ucomvar.h>
81
82 #include <dev/usb/uslsareg.h>
83
84 #include <fs/unicode.h>
85
86 #ifdef USLSA_DEBUG
87 #define DPRINTF(x) if (uslsadebug) device_printf x
88 int uslsadebug = 0;
89 #else
90 #define DPRINTF(x)
91 #endif
92
93 struct uslsa_softc {
94 device_t sc_dev; /* base device */
95 device_t sc_subdev; /* ucom device */
96 struct usbd_device * sc_udev; /* usb device */
97 struct usbd_interface * sc_iface; /* interface */
98 uint8_t sc_ifnum; /* interface number */
99 bool sc_dying; /* disconnecting */
100 };
101
102 static void uslsa_get_status(void *sc, int, u_char *, u_char *);
103 static void uslsa_set(void *, int, int, int);
104 static int uslsa_param(void *, int, struct termios *);
105 static int uslsa_ioctl(void *, int, u_long, void *, int, proc_t *);
106 static int uslsa_open(void *, int);
107 static void uslsa_close(void *, int);
108
109 static int uslsa_usbd_errno(usbd_status);
110 static int uslsa_request_set(struct uslsa_softc *, uint8_t, uint16_t);
111 static int uslsa_set_flow(struct uslsa_softc *, tcflag_t, tcflag_t);
112
113 static const struct ucom_methods uslsa_methods = {
114 .ucom_get_status = uslsa_get_status,
115 .ucom_set = uslsa_set,
116 .ucom_param = uslsa_param,
117 .ucom_ioctl = uslsa_ioctl,
118 .ucom_open = uslsa_open,
119 .ucom_close = uslsa_close,
120 };
121
122 #define USLSA_CONFIG_INDEX 0
123 #define USLSA_IFACE_INDEX 0
124 #define USLSA_BUFSIZE 256
125
126 static const struct usb_devno uslsa_devs[] = {
127 { USB_VENDOR_BALTECH, USB_PRODUCT_BALTECH_CARDREADER },
128 { USB_VENDOR_DYNASTREAM, USB_PRODUCT_DYNASTREAM_ANTDEVBOARD },
129 { USB_VENDOR_JABLOTRON, USB_PRODUCT_JABLOTRON_PC60B },
130 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_ARGUSISP },
131 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_CRUMB128 },
132 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_DEGREECONT },
133 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_DESKTOPMOBILE },
134 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_IPLINK1220 },
135 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_LIPOWSKY_HARP },
136 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_LIPOWSKY_JTAG },
137 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_LIPOWSKY_LIN },
138 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_POLOLU },
139 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_CP210X_1 },
140 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_CP210X_2 },
141 { USB_VENDOR_SILABS, USB_PRODUCT_SILABS_SUNNTO },
142 { USB_VENDOR_SILABS2, USB_PRODUCT_SILABS2_DCU11CLONE },
143 { USB_VENDOR_USI, USB_PRODUCT_USI_MC60 },
144 { USB_VENDOR_WMR, USB_PRODUCT_WMR_RIGBLASTER },
145 };
146
147 static int uslsa_match(device_t, cfdata_t, void *);
148 static void uslsa_attach(device_t, device_t, void *);
149 static void uslsa_childdet(device_t, device_t);
150 static int uslsa_detach(device_t, int);
151
152 CFATTACH_DECL2_NEW(uslsa, sizeof(struct uslsa_softc), uslsa_match,
153 uslsa_attach, uslsa_detach, NULL, NULL, uslsa_childdet);
154
155 static int
uslsa_match(device_t parent,cfdata_t match,void * aux)156 uslsa_match(device_t parent, cfdata_t match, void *aux)
157 {
158 const struct usbif_attach_arg *uiaa = aux;
159
160 if (usb_lookup(uslsa_devs, uiaa->uiaa_vendor, uiaa->uiaa_product)
161 != NULL)
162 return UMATCH_VENDOR_PRODUCT;
163 else
164 return UMATCH_NONE;
165 }
166
167 static void
uslsa_attach(device_t parent,device_t self,void * aux)168 uslsa_attach(device_t parent, device_t self, void *aux)
169 {
170 struct uslsa_softc *sc;
171 const struct usbif_attach_arg *uiaa = aux;
172 const usb_interface_descriptor_t *id;
173 const usb_endpoint_descriptor_t *ed;
174 char *devinfop;
175 struct ucom_attach_args ucaa;
176 int i;
177
178 sc = device_private(self);
179
180 sc->sc_dev = self;
181 sc->sc_udev = uiaa->uiaa_device;
182 sc->sc_iface = uiaa->uiaa_iface;
183 sc->sc_dying = false;
184
185 aprint_naive("\n");
186 aprint_normal("\n");
187
188 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0);
189 aprint_normal_dev(self, "%s\n", devinfop);
190 usbd_devinfo_free(devinfop);
191
192 id = usbd_get_interface_descriptor(sc->sc_iface);
193
194 sc->sc_ifnum = id->bInterfaceNumber;
195
196 ucaa.ucaa_info = "Silicon Labs CP210x";
197 ucaa.ucaa_portno = UCOM_UNK_PORTNO;
198 ucaa.ucaa_ibufsize = USLSA_BUFSIZE;
199 ucaa.ucaa_obufsize = USLSA_BUFSIZE;
200 ucaa.ucaa_ibufsizepad = USLSA_BUFSIZE;
201 ucaa.ucaa_opkthdrlen = 0;
202 ucaa.ucaa_device = sc->sc_udev;
203 ucaa.ucaa_iface = sc->sc_iface;
204 ucaa.ucaa_methods = &uslsa_methods;
205 ucaa.ucaa_arg = sc;
206
207 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
208
209 ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1;
210 for (i = 0; i < id->bNumEndpoints; i++) {
211 int addr, dir, attr;
212
213 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
214 if (ed == NULL) {
215 aprint_error_dev(self,
216 "could not read endpoint descriptor\n");
217 sc->sc_dying = true;
218 return;
219 }
220 addr = ed->bEndpointAddress;
221 dir = UE_GET_DIR(ed->bEndpointAddress);
222 attr = ed->bmAttributes & UE_XFERTYPE;
223 if (dir == UE_DIR_IN && attr == UE_BULK) {
224 ucaa.ucaa_bulkin = addr;
225 } else if (dir == UE_DIR_OUT && attr == UE_BULK) {
226 ucaa.ucaa_bulkout = addr;
227 } else {
228 aprint_error_dev(self, "unexpected endpoint\n");
229 }
230 }
231 aprint_debug_dev(sc->sc_dev, "EPs: in=%#x out=%#x\n",
232 ucaa.ucaa_bulkin, ucaa.ucaa_bulkout);
233 if ((ucaa.ucaa_bulkin == -1) || (ucaa.ucaa_bulkout == -1)) {
234 aprint_error_dev(self, "could not find endpoints\n");
235 sc->sc_dying = true;
236 return;
237 }
238
239 sc->sc_subdev = config_found(self, &ucaa, ucomprint,
240 CFARGS(.submatch = ucomsubmatch));
241
242 if (!pmf_device_register(self, NULL, NULL))
243 aprint_error_dev(self, "couldn't establish power handler\n");
244
245 return;
246 }
247
248 static void
uslsa_childdet(device_t self,device_t child)249 uslsa_childdet(device_t self, device_t child)
250 {
251 struct uslsa_softc *sc = device_private(self);
252
253 KASSERT(sc->sc_subdev == child);
254 sc->sc_subdev = NULL;
255 }
256
257 static int
uslsa_detach(device_t self,int flags)258 uslsa_detach(device_t self, int flags)
259 {
260 struct uslsa_softc *sc = device_private(self);
261 int rv = 0;
262
263 DPRINTF((self, "%s(%p, %#x)\n", __func__, self, flags));
264
265 sc->sc_dying = true;
266
267 if (sc->sc_subdev != NULL) {
268 rv = config_detach(sc->sc_subdev, flags);
269 sc->sc_subdev = NULL;
270 }
271
272 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
273
274 return rv;
275 }
276
277 static int
uslsa_usbd_errno(usbd_status status)278 uslsa_usbd_errno(usbd_status status)
279 {
280 switch (status) {
281 case USBD_NORMAL_COMPLETION:
282 return 0;
283 case USBD_STALLED:
284 return EINVAL;
285 default:
286 return EIO;
287 }
288 }
289
290 static void
uslsa_get_status(void * vsc,int portno,u_char * lsr,u_char * msr)291 uslsa_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
292 {
293 struct uslsa_softc *sc;
294 usb_device_request_t req;
295 usbd_status status;
296 uint8_t mdmsts;
297
298 sc = vsc;
299
300 DPRINTF((sc->sc_dev, "%s(%p, %d, ....)\n", __func__, vsc, portno));
301
302 if (sc->sc_dying)
303 return;
304
305 req.bmRequestType = UT_READ_VENDOR_INTERFACE;
306 req.bRequest = SLSA_R_GET_MDMSTS;
307 USETW(req.wValue, 0);
308 USETW(req.wIndex, sc->sc_ifnum);
309 USETW(req.wLength, SLSA_RL_GET_MDMSTS);
310
311 status = usbd_do_request(sc->sc_udev, &req, &mdmsts);
312 if (status != USBD_NORMAL_COMPLETION) {
313 device_printf(sc->sc_dev, "%s: GET_MDMSTS %s\n",
314 __func__, usbd_errstr(status));
315 return;
316 }
317
318 DPRINTF((sc->sc_dev, "%s: GET_MDMSTS %#x\n", __func__, mdmsts));
319
320 *lsr = 0;
321
322 *msr = ISSET(mdmsts, SLSA_MDMSTS_CTS) ? UMSR_CTS : 0;
323 *msr |= ISSET(mdmsts, SLSA_MDMSTS_DSR) ? UMSR_DSR : 0;
324 *msr |= ISSET(mdmsts, SLSA_MDMSTS_RI) ? UMSR_RI : 0;
325 *msr |= ISSET(mdmsts, SLSA_MDMSTS_DCD) ? UMSR_DCD : 0;
326 }
327
328 static void
uslsa_set(void * vsc,int portno,int reg,int onoff)329 uslsa_set(void *vsc, int portno, int reg, int onoff)
330 {
331 struct uslsa_softc *sc;
332
333 sc = vsc;
334
335 DPRINTF((sc->sc_dev, "%s(%p, %d, %d, %d)\n", __func__, vsc, portno,
336 reg, onoff));
337
338 if (sc->sc_dying)
339 return;
340
341 switch (reg) {
342 case UCOM_SET_DTR:
343 if (uslsa_request_set(sc, SLSA_R_SET_MHS,
344 SLSA_RV_SET_MHS_DTR_MASK |
345 (onoff ? SLSA_RV_SET_MHS_DTR : 0))) {
346 device_printf(sc->sc_dev, "SET_MHS/DTR failed\n");
347 }
348 break;
349 case UCOM_SET_RTS:
350 if (uslsa_request_set(sc, SLSA_R_SET_MHS,
351 SLSA_RV_SET_MHS_RTS_MASK |
352 (onoff ? SLSA_RV_SET_MHS_RTS : 0))) {
353 device_printf(sc->sc_dev, "SET_MHS/RTS failed\n");
354 }
355 break;
356 case UCOM_SET_BREAK:
357 if (uslsa_request_set(sc, SLSA_R_SET_BREAK,
358 (onoff ? SLSA_RV_SET_BREAK_ENABLE :
359 SLSA_RV_SET_BREAK_DISABLE))) {
360 device_printf(sc->sc_dev, "SET_BREAK failed\n");
361 }
362 break;
363 default:
364 break;
365 }
366 }
367
368 static int
uslsa_param(void * vsc,int portno,struct termios * t)369 uslsa_param(void *vsc, int portno, struct termios *t)
370 {
371 struct uslsa_softc *sc;
372 usb_device_request_t req;
373 usbd_status status;
374 uint16_t value;
375 uint32_t baud;
376 int ret;
377
378 sc = vsc;
379
380 DPRINTF((sc->sc_dev, "%s(%p, %d, %p)\n", __func__, vsc, portno, t));
381
382 if (sc->sc_dying)
383 return EIO;
384
385 req.bmRequestType = UT_WRITE_VENDOR_INTERFACE;
386 req.bRequest = SLSA_R_SET_BAUDRATE;
387 USETW(req.wValue, 0);
388 USETW(req.wIndex, sc->sc_ifnum);
389 USETW(req.wLength, 4);
390
391 baud = htole32(t->c_ospeed);
392 status = usbd_do_request(sc->sc_udev, &req, &baud);
393 if (status != USBD_NORMAL_COMPLETION) {
394 /* fallback method for devices that don't know SET_BAUDRATE */
395 /* hope we calculate it right */
396 device_printf(sc->sc_dev, "%s: set baudrate %d, failed %s,"
397 " using set bauddiv\n",
398 __func__, baud, usbd_errstr(status));
399
400 value = SLSA_RV_BAUDDIV(t->c_ospeed);
401 if ((ret = uslsa_request_set(sc, SLSA_R_SET_BAUDDIV, value))
402 != 0) {
403 device_printf(sc->sc_dev, "%s: SET_BAUDDIV failed\n",
404 __func__);
405 return ret;
406 }
407 }
408
409 value = 0;
410
411 if (ISSET(t->c_cflag, CSTOPB)) {
412 value |= SLSA_RV_LINE_CTL_STOP_2;
413 } else {
414 value |= SLSA_RV_LINE_CTL_STOP_1;
415 }
416
417 if (ISSET(t->c_cflag, PARENB)) {
418 if (ISSET(t->c_cflag, PARODD)) {
419 value |= SLSA_RV_LINE_CTL_PARITY_ODD;
420 } else {
421 value |= SLSA_RV_LINE_CTL_PARITY_EVEN;
422 }
423 } else {
424 value |= SLSA_RV_LINE_CTL_PARITY_NONE;
425 }
426
427 switch (ISSET(t->c_cflag, CSIZE)) {
428 case CS5:
429 value |= SLSA_RV_LINE_CTL_LEN_5;
430 break;
431 case CS6:
432 value |= SLSA_RV_LINE_CTL_LEN_6;
433 break;
434 case CS7:
435 value |= SLSA_RV_LINE_CTL_LEN_7;
436 break;
437 case CS8:
438 value |= SLSA_RV_LINE_CTL_LEN_8;
439 break;
440 }
441
442 DPRINTF((sc->sc_dev, "%s: setting LINE_CTL to %#x\n",
443 __func__, value));
444 if ((ret = uslsa_request_set(sc, SLSA_R_SET_LINE_CTL, value)) != 0) {
445 device_printf(sc->sc_dev, "SET_LINE_CTL failed\n");
446 return ret;
447 }
448
449 if ((ret = uslsa_set_flow(sc, t->c_cflag, t->c_iflag)) != 0) {
450 device_printf(sc->sc_dev, "SET_LINE_CTL failed\n");
451 }
452
453 return ret;
454 }
455
456 static int
uslsa_ioctl(void * vsc,int portno,u_long cmd,void * data,int flag,proc_t * p)457 uslsa_ioctl(void *vsc, int portno, u_long cmd, void *data, int flag, proc_t *p)
458 {
459 struct uslsa_softc *sc;
460
461 sc = vsc;
462
463 if (sc->sc_dying)
464 return EIO;
465
466 switch (cmd) {
467 case TIOCMGET:
468 ucom_status_change(device_private(sc->sc_subdev));
469 return EPASSTHROUGH;
470 default:
471 return EPASSTHROUGH;
472 }
473
474 return 0;
475 }
476
477 static int
uslsa_open(void * vsc,int portno)478 uslsa_open(void *vsc, int portno)
479 {
480 struct uslsa_softc *sc;
481
482 sc = vsc;
483
484 DPRINTF((sc->sc_dev, "%s(%p, %d)\n", __func__, vsc, portno));
485
486 if (sc->sc_dying)
487 return EIO;
488
489 return uslsa_request_set(sc, SLSA_R_IFC_ENABLE,
490 SLSA_RV_IFC_ENABLE_ENABLE);
491 }
492
493 static void
uslsa_close(void * vsc,int portno)494 uslsa_close(void *vsc, int portno)
495 {
496 struct uslsa_softc *sc;
497
498 sc = vsc;
499
500 DPRINTF((sc->sc_dev, "%s(%p, %d)\n", __func__, vsc, portno));
501
502 if (sc->sc_dying)
503 return;
504
505 uslsa_request_set(sc, SLSA_R_IFC_ENABLE, SLSA_RV_IFC_ENABLE_DISABLE);
506 }
507
508 static int
uslsa_request_set(struct uslsa_softc * sc,uint8_t request,uint16_t value)509 uslsa_request_set(struct uslsa_softc * sc, uint8_t request, uint16_t value)
510 {
511 usb_device_request_t req;
512 usbd_status status;
513
514 req.bmRequestType = UT_WRITE_VENDOR_INTERFACE;
515 req.bRequest = request;
516 USETW(req.wValue, value);
517 USETW(req.wIndex, sc->sc_ifnum);
518 USETW(req.wLength, 0);
519
520 status = usbd_do_request(sc->sc_udev, &req, NULL);
521
522 return uslsa_usbd_errno(status);
523 }
524
525 static int
uslsa_set_flow(struct uslsa_softc * sc,tcflag_t cflag,tcflag_t iflag)526 uslsa_set_flow(struct uslsa_softc *sc, tcflag_t cflag, tcflag_t iflag)
527 {
528 struct slsa_fcs fcs;
529 usb_device_request_t req;
530 uint32_t ulControlHandshake;
531 uint32_t ulFlowReplace;
532 usbd_status status;
533
534 DPRINTF((sc->sc_dev, "%s(%p, %#x, %#x)\n", __func__, sc, cflag, iflag));
535
536 req.bmRequestType = UT_READ_VENDOR_INTERFACE;
537 req.bRequest = SLSA_R_GET_FLOW;
538 USETW(req.wValue, 0);
539 USETW(req.wIndex, sc->sc_ifnum);
540 USETW(req.wLength, SLSA_RL_GET_FLOW);
541
542 status = usbd_do_request(sc->sc_udev, &req, &fcs);
543 if (status != USBD_NORMAL_COMPLETION) {
544 device_printf(sc->sc_dev, "%s: GET_FLOW %s\n",
545 __func__, usbd_errstr(status));
546 return uslsa_usbd_errno(status);
547 }
548
549 ulControlHandshake = le32toh(fcs.ulControlHandshake);
550 ulFlowReplace = le32toh(fcs.ulFlowReplace);
551
552 if (ISSET(cflag, CRTSCTS)) {
553 ulControlHandshake =
554 SERIAL_CTS_HANDSHAKE | __SHIFTIN(1, SERIAL_DTR_MASK);
555 ulFlowReplace = __SHIFTIN(2, SERIAL_RTS_MASK);
556 } else {
557 ulControlHandshake = __SHIFTIN(1, SERIAL_DTR_MASK);
558 ulFlowReplace = __SHIFTIN(1, SERIAL_RTS_MASK);
559 }
560
561 fcs.ulControlHandshake = htole32(ulControlHandshake);
562 fcs.ulFlowReplace = htole32(ulFlowReplace);
563
564 req.bmRequestType = UT_WRITE_VENDOR_INTERFACE;
565 req.bRequest = SLSA_R_SET_FLOW;
566 USETW(req.wValue, 0);
567 USETW(req.wIndex, sc->sc_ifnum);
568 USETW(req.wLength, SLSA_RL_SET_FLOW);
569
570 status = usbd_do_request(sc->sc_udev, &req, &fcs);
571
572 return uslsa_usbd_errno(status);
573 }
574