xref: /netbsd-src/sys/dev/usb/uftdi.c (revision d909946ca08dceb44d7d0f22ec9488679695d976)
1 /*	$NetBSD: uftdi.c,v 1.62 2016/07/07 06:55:42 msaitoh Exp $	*/
2 
3 /*
4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Lennart Augustsson (lennart@augustsson.net).
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: uftdi.c,v 1.62 2016/07/07 06:55:42 msaitoh Exp $");
34 
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/device.h>
39 #include <sys/conf.h>
40 #include <sys/tty.h>
41 
42 #include <dev/usb/usb.h>
43 
44 #include <dev/usb/usbdi.h>
45 #include <dev/usb/usbdi_util.h>
46 #include <dev/usb/usbdevs.h>
47 
48 #include <dev/usb/ucomvar.h>
49 
50 #include <dev/usb/uftdireg.h>
51 
52 #ifdef UFTDI_DEBUG
53 #define DPRINTF(x)	if (uftdidebug) printf x
54 #define DPRINTFN(n,x)	if (uftdidebug>(n)) printf x
55 int uftdidebug = 0;
56 #else
57 #define DPRINTF(x)
58 #define DPRINTFN(n,x)
59 #endif
60 
61 #define UFTDI_CONFIG_INDEX	0
62 #define UFTDI_IFACE_INDEX	0
63 #define UFTDI_MAX_PORTS		4
64 
65 /*
66  * These are the default number of bytes transferred per frame if the
67  * endpoint doesn't tell us.  The output buffer size is a hard limit
68  * for devices that use a 6-bit size encoding.
69  */
70 #define UFTDIIBUFSIZE 64
71 #define UFTDIOBUFSIZE 64
72 
73 /*
74  * Magic constants!  Where do these come from?  They're what Linux uses...
75  */
76 #define	UFTDI_MAX_IBUFSIZE	512
77 #define	UFTDI_MAX_OBUFSIZE	256
78 
79 struct uftdi_softc {
80 	device_t		sc_dev;		/* base device */
81 	struct usbd_device *	sc_udev;	/* device */
82 	struct usbd_interface *	sc_iface[UFTDI_MAX_PORTS];	/* interface */
83 
84 	enum uftdi_type		sc_type;
85 	u_int			sc_hdrlen;
86 	u_int			sc_numports;
87 	u_int			sc_chiptype;
88 
89 	u_char			sc_msr;
90 	u_char			sc_lsr;
91 
92 	device_t		sc_subdev[UFTDI_MAX_PORTS];
93 
94 	u_char			sc_dying;
95 
96 	u_int			last_lcr;
97 
98 };
99 
100 Static void	uftdi_get_status(void *, int, u_char *, u_char *);
101 Static void	uftdi_set(void *, int, int, int);
102 Static int	uftdi_param(void *, int, struct termios *);
103 Static int	uftdi_open(void *, int);
104 Static void	uftdi_read(void *, int, u_char **, uint32_t *);
105 Static void	uftdi_write(void *, int, u_char *, u_char *,
106 			    uint32_t *);
107 Static void	uftdi_break(void *, int, int);
108 
109 struct ucom_methods uftdi_methods = {
110 	.ucom_get_status = uftdi_get_status,
111 	.ucom_set = uftdi_set,
112 	.ucom_param = uftdi_param,
113 	.ucom_ioctl = NULL,
114 	.ucom_open = uftdi_open,
115 	.ucom_close = NULL,
116 	.ucom_read = uftdi_read,
117 	.ucom_write = uftdi_write,
118 };
119 
120 /*
121  * The devices default to UFTDI_TYPE_8U232AM.
122  * Remember to update uftdi_attach() if it should be UFTDI_TYPE_SIO instead
123  */
124 static const struct usb_devno uftdi_devs[] = {
125 	{ USB_VENDOR_BBELECTRONICS, USB_PRODUCT_BBELECTRONICS_USOTL4 },
126 	{ USB_VENDOR_FALCOM, USB_PRODUCT_FALCOM_TWIST },
127 	{ USB_VENDOR_FALCOM, USB_PRODUCT_FALCOM_SAMBA },
128 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_230X },
129 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_232H },
130 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_232RL },
131 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_2232C },
132 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_4232H },
133 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U100AX },
134 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U232AM },
135 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MHAM_KW },
136 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MHAM_YS },
137 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MHAM_Y6 },
138 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MHAM_Y8 },
139 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MHAM_IC },
140 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MHAM_DB9 },
141 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MHAM_RS232 },
142 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MHAM_Y9 },
143 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_COASTAL_TNCX },
144 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CTI_485_MINI },
145 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CTI_NANO_485 },
146 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SEMC_DSS20 },
147 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_LK202_24_USB },
148 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_LK204_24_USB },
149 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_MX200_USB },
150 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_MX4_MX5_USB },
151 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_CFA_631 },
152 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_CFA_632 },
153 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_CFA_633 },
154 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_CFA_634 },
155 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LCD_CFA_635 },
156 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_OPENRD_JTAGKEY },
157 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_BEAGLEBONE },
158 	{ USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MAXSTREAM_PKG_U },
159 	{ USB_VENDOR_xxFTDI, USB_PRODUCT_xxFTDI_SHEEVAPLUG_JTAG },
160 	{ USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_VALUECAN },
161 	{ USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_NEOVI },
162 	{ USB_VENDOR_MELCO, USB_PRODUCT_MELCO_PCOPRS1 },
163 	{ USB_VENDOR_RATOC, USB_PRODUCT_RATOC_REXUSB60F },
164 	{ USB_VENDOR_SEALEVEL, USB_PRODUCT_SEALEVEL_USBSERIAL },
165 	{ USB_VENDOR_SEALEVEL, USB_PRODUCT_SEALEVEL_SEAPORT4P1 },
166 	{ USB_VENDOR_SEALEVEL, USB_PRODUCT_SEALEVEL_SEAPORT4P2 },
167 	{ USB_VENDOR_SEALEVEL, USB_PRODUCT_SEALEVEL_SEAPORT4P3 },
168 	{ USB_VENDOR_SEALEVEL, USB_PRODUCT_SEALEVEL_SEAPORT4P4 },
169 	{ USB_VENDOR_SIIG2, USB_PRODUCT_SIIG2_US2308 },
170 	{ USB_VENDOR_MISC, USB_PRODUCT_MISC_TELLSTICK },
171 	{ USB_VENDOR_MISC, USB_PRODUCT_MISC_TELLSTICK_DUO },
172 };
173 #define uftdi_lookup(v, p) usb_lookup(uftdi_devs, v, p)
174 
175 int uftdi_match(device_t, cfdata_t, void *);
176 void uftdi_attach(device_t, device_t, void *);
177 void uftdi_childdet(device_t, device_t);
178 int uftdi_detach(device_t, int);
179 int uftdi_activate(device_t, enum devact);
180 extern struct cfdriver uftdi_cd;
181 CFATTACH_DECL2_NEW(uftdi, sizeof(struct uftdi_softc), uftdi_match,
182     uftdi_attach, uftdi_detach, uftdi_activate, NULL, uftdi_childdet);
183 
184 int
185 uftdi_match(device_t parent, cfdata_t match, void *aux)
186 {
187 	struct usb_attach_arg *uaa = aux;
188 
189 	DPRINTFN(20,("uftdi: vendor=0x%x, product=0x%x\n",
190 		     uaa->uaa_vendor, uaa->uaa_product));
191 
192 	return uftdi_lookup(uaa->uaa_vendor, uaa->uaa_product) != NULL ?
193 		UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
194 }
195 
196 void
197 uftdi_attach(device_t parent, device_t self, void *aux)
198 {
199 	struct uftdi_softc *sc = device_private(self);
200 	struct usb_attach_arg *uaa = aux;
201 	struct usbd_device *dev = uaa->uaa_device;
202 	struct usbd_interface *iface;
203 	usb_device_descriptor_t *ddesc;
204 	usb_interface_descriptor_t *id;
205 	usb_endpoint_descriptor_t *ed;
206 	char *devinfop;
207 	const char *devname = device_xname(self);
208 	int i,idx;
209 	usbd_status err;
210 	struct ucom_attach_args ucaa;
211 
212 	DPRINTFN(10,("\nuftdi_attach: sc=%p\n", sc));
213 
214 	aprint_naive("\n");
215 	aprint_normal("\n");
216 
217 	devinfop = usbd_devinfo_alloc(dev, 0);
218 	aprint_normal_dev(self, "%s\n", devinfop);
219 	usbd_devinfo_free(devinfop);
220 
221 	/* Move the device into the configured state. */
222 	err = usbd_set_config_index(dev, UFTDI_CONFIG_INDEX, 1);
223 	if (err) {
224 		aprint_error("\n%s: failed to set configuration, err=%s\n",
225 		       devname, usbd_errstr(err));
226 		goto bad;
227 	}
228 
229 	sc->sc_dev = self;
230 	sc->sc_udev = dev;
231 	sc->sc_numports = 1;
232 	sc->sc_type = UFTDI_TYPE_8U232AM; /* most devices are post-8U232AM */
233 	sc->sc_hdrlen = 0;
234 	if (uaa->uaa_vendor == USB_VENDOR_FTDI
235 	    && uaa->uaa_product == USB_PRODUCT_FTDI_SERIAL_8U100AX) {
236 		sc->sc_type = UFTDI_TYPE_SIO;
237 		sc->sc_hdrlen = 1;
238 	}
239 
240 	ddesc = usbd_get_device_descriptor(dev);
241 	sc->sc_chiptype = UGETW(ddesc->bcdDevice);
242 	switch (sc->sc_chiptype) {
243 	case 0x500: /* 2232D */
244 	case 0x700: /* 2232H */
245 		sc->sc_numports = 2;
246 		break;
247 	case 0x800: /* 4232H */
248 		sc->sc_numports = 4;
249 		break;
250 	case 0x200: /* 232/245AM */
251 	case 0x400: /* 232/245BL */
252 	case 0x600: /* 232/245R */
253 	default:
254 		break;
255 	}
256 
257 	for (idx = UFTDI_IFACE_INDEX; idx < sc->sc_numports; idx++) {
258 		err = usbd_device2interface_handle(dev, idx, &iface);
259 		if (err) {
260 			aprint_error(
261 			    "\n%s: failed to get interface idx=%d, err=%s\n",
262 			    devname, idx, usbd_errstr(err));
263 			goto bad;
264 		}
265 
266 		id = usbd_get_interface_descriptor(iface);
267 
268 		sc->sc_iface[idx] = iface;
269 
270 		ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1;
271 		ucaa.ucaa_ibufsize = ucaa.ucaa_obufsize = 0;
272 		for (i = 0; i < id->bNumEndpoints; i++) {
273 			int addr, dir, attr;
274 			ed = usbd_interface2endpoint_descriptor(iface, i);
275 			if (ed == NULL) {
276 				aprint_error_dev(self,
277 				    "could not read endpoint descriptor: %s\n",
278 				    usbd_errstr(err));
279 				goto bad;
280 			}
281 
282 			addr = ed->bEndpointAddress;
283 			dir = UE_GET_DIR(ed->bEndpointAddress);
284 			attr = ed->bmAttributes & UE_XFERTYPE;
285 			if (dir == UE_DIR_IN && attr == UE_BULK) {
286 				ucaa.ucaa_bulkin = addr;
287 				ucaa.ucaa_ibufsize = UGETW(ed->wMaxPacketSize);
288 				if (ucaa.ucaa_ibufsize >= UFTDI_MAX_IBUFSIZE)
289 					ucaa.ucaa_ibufsize = UFTDI_MAX_IBUFSIZE;
290 			} else if (dir == UE_DIR_OUT && attr == UE_BULK) {
291 				ucaa.ucaa_bulkout = addr;
292 				ucaa.ucaa_obufsize = UGETW(ed->wMaxPacketSize)
293 				    - sc->sc_hdrlen;
294 				if (ucaa.ucaa_obufsize >= UFTDI_MAX_OBUFSIZE)
295 					ucaa.ucaa_obufsize = UFTDI_MAX_OBUFSIZE;
296 				/* Limit length if we have a 6-bit header.  */
297 				if ((sc->sc_hdrlen > 0) &&
298 				    (ucaa.ucaa_obufsize > UFTDIOBUFSIZE))
299 					ucaa.ucaa_obufsize = UFTDIOBUFSIZE;
300 			} else {
301 				aprint_error_dev(self,
302 				    "unexpected endpoint\n");
303 				goto bad;
304 			}
305 		}
306 		if (ucaa.ucaa_bulkin == -1) {
307 			aprint_error_dev(self,
308 			    "Could not find data bulk in\n");
309 			goto bad;
310 		}
311 		if (ucaa.ucaa_bulkout == -1) {
312 			aprint_error_dev(self,
313 			    "Could not find data bulk out\n");
314 			goto bad;
315 		}
316 
317 		ucaa.ucaa_portno = FTDI_PIT_SIOA + idx;
318 		/* ucaa_bulkin, ucaa_bulkout set above */
319 		if (ucaa.ucaa_ibufsize == 0)
320 			ucaa.ucaa_ibufsize = UFTDIIBUFSIZE;
321 		ucaa.ucaa_ibufsizepad = ucaa.ucaa_ibufsize;
322 		if (ucaa.ucaa_obufsize == 0)
323 			ucaa.ucaa_obufsize = UFTDIOBUFSIZE - sc->sc_hdrlen;
324 		ucaa.ucaa_opkthdrlen = sc->sc_hdrlen;
325 		ucaa.ucaa_device = dev;
326 		ucaa.ucaa_iface = iface;
327 		ucaa.ucaa_methods = &uftdi_methods;
328 		ucaa.ucaa_arg = sc;
329 		ucaa.ucaa_info = NULL;
330 
331 		DPRINTF(("uftdi: in=0x%x out=0x%x isize=0x%x osize=0x%x\n",
332 			ucaa.ucaa_bulkin, ucaa.ucaa_bulkout,
333 			ucaa.ucaa_ibufsize, ucaa.ucaa_obufsize));
334 		sc->sc_subdev[idx] = config_found_sm_loc(self, "ucombus", NULL,
335 		    &ucaa, ucomprint, ucomsubmatch);
336 	}
337 
338 	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
339 
340 	return;
341 
342 bad:
343 	DPRINTF(("uftdi_attach: ATTACH ERROR\n"));
344 	sc->sc_dying = 1;
345 	return;
346 }
347 
348 int
349 uftdi_activate(device_t self, enum devact act)
350 {
351 	struct uftdi_softc *sc = device_private(self);
352 
353 	switch (act) {
354 	case DVACT_DEACTIVATE:
355 		sc->sc_dying = 1;
356 		return 0;
357 	default:
358 		return EOPNOTSUPP;
359 	}
360 }
361 
362 void
363 uftdi_childdet(device_t self, device_t child)
364 {
365 	int i;
366 	struct uftdi_softc *sc = device_private(self);
367 
368 	for (i = 0; i < sc->sc_numports; i++) {
369 		if (sc->sc_subdev[i] == child)
370 			break;
371 	}
372 	KASSERT(i < sc->sc_numports);
373 	sc->sc_subdev[i] = NULL;
374 }
375 
376 int
377 uftdi_detach(device_t self, int flags)
378 {
379 	struct uftdi_softc *sc = device_private(self);
380 	int i;
381 
382 	DPRINTF(("uftdi_detach: sc=%p flags=%d\n", sc, flags));
383 	sc->sc_dying = 1;
384 	for (i=0; i < sc->sc_numports; i++) {
385 		if (sc->sc_subdev[i] != NULL)
386 			config_detach(sc->sc_subdev[i], flags);
387 	}
388 
389 	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
390 
391 	return 0;
392 }
393 
394 Static int
395 uftdi_open(void *vsc, int portno)
396 {
397 	struct uftdi_softc *sc = vsc;
398 	usb_device_request_t req;
399 	usbd_status err;
400 	struct termios t;
401 
402 	DPRINTF(("uftdi_open: sc=%p\n", sc));
403 
404 	if (sc->sc_dying)
405 		return EIO;
406 
407 	/* Perform a full reset on the device */
408 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
409 	req.bRequest = FTDI_SIO_RESET;
410 	USETW(req.wValue, FTDI_SIO_RESET_SIO);
411 	USETW(req.wIndex, portno);
412 	USETW(req.wLength, 0);
413 	err = usbd_do_request(sc->sc_udev, &req, NULL);
414 	if (err)
415 		return EIO;
416 
417 	/* Set 9600 baud, 2 stop bits, no parity, 8 bits */
418 	t.c_ospeed = 9600;
419 	t.c_cflag = CSTOPB | CS8;
420 	(void)uftdi_param(sc, portno, &t);
421 
422 	/* Turn on RTS/CTS flow control */
423 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
424 	req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
425 	USETW(req.wValue, 0);
426 	USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, portno);
427 	USETW(req.wLength, 0);
428 	err = usbd_do_request(sc->sc_udev, &req, NULL);
429 	if (err)
430 		return EIO;
431 
432 	return 0;
433 }
434 
435 Static void
436 uftdi_read(void *vsc, int portno, u_char **ptr, uint32_t *count)
437 {
438 	struct uftdi_softc *sc = vsc;
439 	u_char msr, lsr;
440 
441 	DPRINTFN(15,("uftdi_read: sc=%p, port=%d count=%d\n", sc, portno,
442 		     *count));
443 
444 	msr = FTDI_GET_MSR(*ptr);
445 	lsr = FTDI_GET_LSR(*ptr);
446 
447 #ifdef UFTDI_DEBUG
448 	if (*count != 2)
449 		DPRINTFN(10,("uftdi_read: sc=%p, port=%d count=%d data[0]="
450 			    "0x%02x\n", sc, portno, *count, (*ptr)[2]));
451 #endif
452 
453 	if (sc->sc_msr != msr ||
454 	    (sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK)) {
455 		DPRINTF(("uftdi_read: status change msr=0x%02x(0x%02x) "
456 			 "lsr=0x%02x(0x%02x)\n", msr, sc->sc_msr,
457 			 lsr, sc->sc_lsr));
458 		sc->sc_msr = msr;
459 		sc->sc_lsr = lsr;
460 		ucom_status_change(device_private(sc->sc_subdev[portno-1]));
461 	}
462 
463 	/* Adjust buffer pointer to skip status prefix */
464 	*ptr += 2;
465 }
466 
467 Static void
468 uftdi_write(void *vsc, int portno, u_char *to, u_char *from, uint32_t *count)
469 {
470 	struct uftdi_softc *sc = vsc;
471 
472 	DPRINTFN(10,("uftdi_write: sc=%p, port=%d count=%u data[0]=0x%02x\n",
473 		     vsc, portno, *count, from[0]));
474 
475 	/* Make length tag and copy data */
476 	if (sc->sc_hdrlen > 0)
477 		*to = FTDI_OUT_TAG(*count, portno);
478 
479 	memcpy(to + sc->sc_hdrlen, from, *count);
480 	*count += sc->sc_hdrlen;
481 }
482 
483 Static void
484 uftdi_set(void *vsc, int portno, int reg, int onoff)
485 {
486 	struct uftdi_softc *sc = vsc;
487 	usb_device_request_t req;
488 	int ctl;
489 
490 	DPRINTF(("uftdi_set: sc=%p, port=%d reg=%d onoff=%d\n", vsc, portno,
491 		 reg, onoff));
492 
493 	switch (reg) {
494 	case UCOM_SET_DTR:
495 		ctl = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW;
496 		break;
497 	case UCOM_SET_RTS:
498 		ctl = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW;
499 		break;
500 	case UCOM_SET_BREAK:
501 		uftdi_break(sc, portno, onoff);
502 		return;
503 	default:
504 		return;
505 	}
506 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
507 	req.bRequest = FTDI_SIO_MODEM_CTRL;
508 	USETW(req.wValue, ctl);
509 	USETW(req.wIndex, portno);
510 	USETW(req.wLength, 0);
511 	DPRINTFN(2,("uftdi_set: reqtype=0x%02x req=0x%02x value=0x%04x "
512 		    "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
513 		    UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
514 	(void)usbd_do_request(sc->sc_udev, &req, NULL);
515 }
516 
517 Static int
518 uftdi_param(void *vsc, int portno, struct termios *t)
519 {
520 	struct uftdi_softc *sc = vsc;
521 	usb_device_request_t req;
522 	usbd_status err;
523 	int rate, data, flow;
524 
525 	DPRINTF(("uftdi_param: sc=%p\n", sc));
526 
527 	if (sc->sc_dying)
528 		return EIO;
529 
530 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
531 	req.bRequest = FTDI_SIO_SET_BITMODE;
532 	USETW(req.wValue, FTDI_BITMODE_RESET << 8 | 0x00);
533 	USETW(req.wIndex, portno);
534 	USETW(req.wLength, 0);
535 	err = usbd_do_request(sc->sc_udev, &req, NULL);
536 	if (err)
537 		return EIO;
538 
539 	switch (sc->sc_type) {
540 	case UFTDI_TYPE_SIO:
541 		switch (t->c_ospeed) {
542 		case 300: rate = ftdi_sio_b300; break;
543 		case 600: rate = ftdi_sio_b600; break;
544 		case 1200: rate = ftdi_sio_b1200; break;
545 		case 2400: rate = ftdi_sio_b2400; break;
546 		case 4800: rate = ftdi_sio_b4800; break;
547 		case 9600: rate = ftdi_sio_b9600; break;
548 		case 19200: rate = ftdi_sio_b19200; break;
549 		case 38400: rate = ftdi_sio_b38400; break;
550 		case 57600: rate = ftdi_sio_b57600; break;
551 		case 115200: rate = ftdi_sio_b115200; break;
552 		default:
553 			return EINVAL;
554 		}
555 		break;
556 
557 	case UFTDI_TYPE_8U232AM:
558 		switch(t->c_ospeed) {
559 		case 300: rate = ftdi_8u232am_b300; break;
560 		case 600: rate = ftdi_8u232am_b600; break;
561 		case 1200: rate = ftdi_8u232am_b1200; break;
562 		case 2400: rate = ftdi_8u232am_b2400; break;
563 		case 4800: rate = ftdi_8u232am_b4800; break;
564 		case 9600: rate = ftdi_8u232am_b9600; break;
565 		case 19200: rate = ftdi_8u232am_b19200; break;
566 		case 38400: rate = ftdi_8u232am_b38400; break;
567 		case 57600: rate = ftdi_8u232am_b57600; break;
568 		case 115200: rate = ftdi_8u232am_b115200; break;
569 		case 230400: rate = ftdi_8u232am_b230400; break;
570 		case 460800: rate = ftdi_8u232am_b460800; break;
571 		case 921600: rate = ftdi_8u232am_b921600; break;
572 		default:
573 			return EINVAL;
574 		}
575 		break;
576 
577 	default:
578 		return EINVAL;
579 	}
580 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
581 	req.bRequest = FTDI_SIO_SET_BAUD_RATE;
582 	USETW(req.wValue, rate);
583 	USETW(req.wIndex, portno);
584 	USETW(req.wLength, 0);
585 	DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
586 		    "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
587 		    UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
588 	err = usbd_do_request(sc->sc_udev, &req, NULL);
589 	if (err)
590 		return EIO;
591 
592 	if (ISSET(t->c_cflag, CSTOPB))
593 		data = FTDI_SIO_SET_DATA_STOP_BITS_2;
594 	else
595 		data = FTDI_SIO_SET_DATA_STOP_BITS_1;
596 	if (ISSET(t->c_cflag, PARENB)) {
597 		if (ISSET(t->c_cflag, PARODD))
598 			data |= FTDI_SIO_SET_DATA_PARITY_ODD;
599 		else
600 			data |= FTDI_SIO_SET_DATA_PARITY_EVEN;
601 	} else
602 		data |= FTDI_SIO_SET_DATA_PARITY_NONE;
603 	switch (ISSET(t->c_cflag, CSIZE)) {
604 	case CS5:
605 		data |= FTDI_SIO_SET_DATA_BITS(5);
606 		break;
607 	case CS6:
608 		data |= FTDI_SIO_SET_DATA_BITS(6);
609 		break;
610 	case CS7:
611 		data |= FTDI_SIO_SET_DATA_BITS(7);
612 		break;
613 	case CS8:
614 		data |= FTDI_SIO_SET_DATA_BITS(8);
615 		break;
616 	}
617 	sc->last_lcr = data;
618 
619 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
620 	req.bRequest = FTDI_SIO_SET_DATA;
621 	USETW(req.wValue, data);
622 	USETW(req.wIndex, portno);
623 	USETW(req.wLength, 0);
624 	DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
625 		    "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
626 		    UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
627 	err = usbd_do_request(sc->sc_udev, &req, NULL);
628 	if (err)
629 		return EIO;
630 
631 	if (ISSET(t->c_cflag, CRTSCTS)) {
632 		flow = FTDI_SIO_RTS_CTS_HS;
633 		USETW(req.wValue, 0);
634 	} else if (ISSET(t->c_iflag, IXON) && ISSET(t->c_iflag, IXOFF)) {
635 		flow = FTDI_SIO_XON_XOFF_HS;
636 		USETW2(req.wValue, t->c_cc[VSTOP], t->c_cc[VSTART]);
637 	} else {
638 		flow = FTDI_SIO_DISABLE_FLOW_CTRL;
639 		USETW(req.wValue, 0);
640 	}
641 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
642 	req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
643 	USETW2(req.wIndex, flow, portno);
644 	USETW(req.wLength, 0);
645 	err = usbd_do_request(sc->sc_udev, &req, NULL);
646 	if (err)
647 		return EIO;
648 
649 	return 0;
650 }
651 
652 void
653 uftdi_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
654 {
655 	struct uftdi_softc *sc = vsc;
656 
657 	DPRINTF(("uftdi_status: msr=0x%02x lsr=0x%02x\n",
658 		 sc->sc_msr, sc->sc_lsr));
659 
660 	if (msr != NULL)
661 		*msr = sc->sc_msr;
662 	if (lsr != NULL)
663 		*lsr = sc->sc_lsr;
664 }
665 
666 void
667 uftdi_break(void *vsc, int portno, int onoff)
668 {
669 	struct uftdi_softc *sc = vsc;
670 	usb_device_request_t req;
671 	int data;
672 
673 	DPRINTF(("uftdi_break: sc=%p, port=%d onoff=%d\n", vsc, portno,
674 		  onoff));
675 
676 	if (onoff) {
677 		data = sc->last_lcr | FTDI_SIO_SET_BREAK;
678 	} else {
679 		data = sc->last_lcr;
680 	}
681 
682 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
683 	req.bRequest = FTDI_SIO_SET_DATA;
684 	USETW(req.wValue, data);
685 	USETW(req.wIndex, portno);
686 	USETW(req.wLength, 0);
687 	(void)usbd_do_request(sc->sc_udev, &req, NULL);
688 }
689