1 /*-
2 * Copyright (c) 2002, Alexander Kabaev <kan.FreeBSD.org>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 /*-
28 * Copyright (c) 2001 The NetBSD Foundation, Inc.
29 * All rights reserved.
30 *
31 * This code is derived from software contributed to The NetBSD Foundation
32 * by Ichiro FUKUHARA (ichiro@ichiro.org).
33 *
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
36 * are met:
37 * 1. Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
44 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
45 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
47 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
53 * POSSIBILITY OF SUCH DAMAGE.
54 */
55
56 #include <sys/stdint.h>
57 #include <sys/param.h>
58 #include <sys/queue.h>
59 #include <sys/types.h>
60 #include <sys/systm.h>
61 #include <sys/kernel.h>
62 #include <sys/bus.h>
63 #include <sys/module.h>
64 #include <sys/lock.h>
65 #include <sys/condvar.h>
66 #include <sys/sysctl.h>
67 #include <sys/unistd.h>
68 #include <sys/callout.h>
69 #include <sys/malloc.h>
70 #include <sys/caps.h>
71
72 #include <bus/u4b/usb.h>
73 #include <bus/u4b/usbdi.h>
74 #include <bus/u4b/usbdi_util.h>
75 #include "usbdevs.h"
76
77 #define USB_DEBUG_VAR ubsa_debug
78 #include <bus/u4b/usb_debug.h>
79 #include <bus/u4b/usb_process.h>
80
81 #include <bus/u4b/serial/usb_serial.h>
82
83 #ifdef USB_DEBUG
84 static int ubsa_debug = 0;
85
86 static SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW, 0, "USB ubsa");
87 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RW,
88 &ubsa_debug, 0, "ubsa debug level");
89 #endif
90
91 #define UBSA_BSIZE 1024 /* bytes */
92
93 #define UBSA_CONFIG_INDEX 0
94 #define UBSA_IFACE_INDEX 0
95
96 #define UBSA_REG_BAUDRATE 0x00
97 #define UBSA_REG_STOP_BITS 0x01
98 #define UBSA_REG_DATA_BITS 0x02
99 #define UBSA_REG_PARITY 0x03
100 #define UBSA_REG_DTR 0x0A
101 #define UBSA_REG_RTS 0x0B
102 #define UBSA_REG_BREAK 0x0C
103 #define UBSA_REG_FLOW_CTRL 0x10
104
105 #define UBSA_PARITY_NONE 0x00
106 #define UBSA_PARITY_EVEN 0x01
107 #define UBSA_PARITY_ODD 0x02
108 #define UBSA_PARITY_MARK 0x03
109 #define UBSA_PARITY_SPACE 0x04
110
111 #define UBSA_FLOW_NONE 0x0000
112 #define UBSA_FLOW_OCTS 0x0001
113 #define UBSA_FLOW_ODSR 0x0002
114 #define UBSA_FLOW_IDSR 0x0004
115 #define UBSA_FLOW_IDTR 0x0008
116 #define UBSA_FLOW_IRTS 0x0010
117 #define UBSA_FLOW_ORTS 0x0020
118 #define UBSA_FLOW_UNKNOWN 0x0040
119 #define UBSA_FLOW_OXON 0x0080
120 #define UBSA_FLOW_IXON 0x0100
121
122 /* line status register */
123 #define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */
124 #define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */
125 #define UBSA_LSR_BI 0x10 /* Break detected */
126 #define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */
127 #define UBSA_LSR_PE 0x04 /* Parity error */
128 #define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */
129 #define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */
130 #define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */
131
132 /* modem status register */
133 /* All deltas are from the last read of the MSR. */
134 #define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */
135 #define UBSA_MSR_RI 0x40 /* Current Ring Indicator */
136 #define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */
137 #define UBSA_MSR_CTS 0x10 /* Current Clear to Send */
138 #define UBSA_MSR_DDCD 0x08 /* DCD has changed state */
139 #define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */
140 #define UBSA_MSR_DDSR 0x02 /* DSR has changed state */
141 #define UBSA_MSR_DCTS 0x01 /* CTS has changed state */
142
143 enum {
144 UBSA_BULK_DT_WR,
145 UBSA_BULK_DT_RD,
146 UBSA_INTR_DT_RD,
147 UBSA_N_TRANSFER,
148 };
149
150 struct ubsa_softc {
151 struct ucom_super_softc sc_super_ucom;
152 struct ucom_softc sc_ucom;
153
154 struct usb_xfer *sc_xfer[UBSA_N_TRANSFER];
155 struct usb_device *sc_udev;
156 struct lock sc_lock;
157
158 uint8_t sc_iface_no; /* interface number */
159 uint8_t sc_iface_index; /* interface index */
160 uint8_t sc_lsr; /* local status register */
161 uint8_t sc_msr; /* UBSA status register */
162 };
163
164 static device_probe_t ubsa_probe;
165 static device_attach_t ubsa_attach;
166 static device_detach_t ubsa_detach;
167
168 static usb_callback_t ubsa_write_callback;
169 static usb_callback_t ubsa_read_callback;
170 static usb_callback_t ubsa_intr_callback;
171
172 static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t);
173 static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t);
174 static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t);
175 static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t);
176 static int ubsa_pre_param(struct ucom_softc *, struct termios *);
177 static void ubsa_cfg_param(struct ucom_softc *, struct termios *);
178 static void ubsa_start_read(struct ucom_softc *);
179 static void ubsa_stop_read(struct ucom_softc *);
180 static void ubsa_start_write(struct ucom_softc *);
181 static void ubsa_stop_write(struct ucom_softc *);
182 static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *,
183 uint8_t *);
184 static void ubsa_poll(struct ucom_softc *ucom);
185
186 static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = {
187
188 [UBSA_BULK_DT_WR] = {
189 .type = UE_BULK,
190 .endpoint = UE_ADDR_ANY,
191 .direction = UE_DIR_OUT,
192 .bufsize = UBSA_BSIZE, /* bytes */
193 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
194 .callback = &ubsa_write_callback,
195 },
196
197 [UBSA_BULK_DT_RD] = {
198 .type = UE_BULK,
199 .endpoint = UE_ADDR_ANY,
200 .direction = UE_DIR_IN,
201 .bufsize = UBSA_BSIZE, /* bytes */
202 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
203 .callback = &ubsa_read_callback,
204 },
205
206 [UBSA_INTR_DT_RD] = {
207 .type = UE_INTERRUPT,
208 .endpoint = UE_ADDR_ANY,
209 .direction = UE_DIR_IN,
210 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
211 .bufsize = 0, /* use wMaxPacketSize */
212 .callback = &ubsa_intr_callback,
213 },
214 };
215
216 static const struct ucom_callback ubsa_callback = {
217 .ucom_cfg_get_status = &ubsa_cfg_get_status,
218 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr,
219 .ucom_cfg_set_rts = &ubsa_cfg_set_rts,
220 .ucom_cfg_set_break = &ubsa_cfg_set_break,
221 .ucom_cfg_param = &ubsa_cfg_param,
222 .ucom_pre_param = &ubsa_pre_param,
223 .ucom_start_read = &ubsa_start_read,
224 .ucom_stop_read = &ubsa_stop_read,
225 .ucom_start_write = &ubsa_start_write,
226 .ucom_stop_write = &ubsa_stop_write,
227 .ucom_poll = &ubsa_poll,
228 };
229
230 static const STRUCT_USB_HOST_ID ubsa_devs[] = {
231 /* AnyData ADU-500A */
232 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)},
233 /* AnyData ADU-E100A/H */
234 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)},
235 /* Axesstel MV100H */
236 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)},
237 /* BELKIN F5U103 */
238 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)},
239 /* BELKIN F5U120 */
240 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)},
241 /* GoHubs GO-COM232 */
242 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)},
243 /* GoHubs GO-COM232 */
244 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)},
245 /* HandyTech's Braille displays */
246 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_HANDYLINK, 0)},
247 /* Peracom */
248 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)},
249 };
250
251 static device_method_t ubsa_methods[] = {
252 DEVMETHOD(device_probe, ubsa_probe),
253 DEVMETHOD(device_attach, ubsa_attach),
254 DEVMETHOD(device_detach, ubsa_detach),
255 DEVMETHOD_END
256 };
257
258 static devclass_t ubsa_devclass;
259
260 static driver_t ubsa_driver = {
261 .name = "ubsa",
262 .methods = ubsa_methods,
263 .size = sizeof(struct ubsa_softc),
264 };
265
266 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, NULL);
267 MODULE_DEPEND(ubsa, ucom, 1, 1, 1);
268 MODULE_DEPEND(ubsa, usb, 1, 1, 1);
269 MODULE_VERSION(ubsa, 1);
270
271 static int
ubsa_probe(device_t dev)272 ubsa_probe(device_t dev)
273 {
274 struct usb_attach_arg *uaa = device_get_ivars(dev);
275
276 if (uaa->usb_mode != USB_MODE_HOST) {
277 return (ENXIO);
278 }
279 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) {
280 return (ENXIO);
281 }
282 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) {
283 return (ENXIO);
284 }
285 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa));
286 }
287
288 static int
ubsa_attach(device_t dev)289 ubsa_attach(device_t dev)
290 {
291 struct usb_attach_arg *uaa = device_get_ivars(dev);
292 struct ubsa_softc *sc = device_get_softc(dev);
293 int error;
294
295 DPRINTF("sc=%p\n", sc);
296
297 device_set_usb_desc(dev);
298 lockinit(&sc->sc_lock, "ubsa", 0, LK_CANRECURSE);
299
300 sc->sc_udev = uaa->device;
301 sc->sc_iface_no = uaa->info.bIfaceNum;
302 sc->sc_iface_index = UBSA_IFACE_INDEX;
303
304 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index,
305 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_lock);
306
307 if (error) {
308 DPRINTF("could not allocate all pipes\n");
309 goto detach;
310 }
311 /* clear stall at first run */
312 lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
313 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]);
314 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]);
315 lockmgr(&sc->sc_lock, LK_RELEASE);
316
317 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
318 &ubsa_callback, &sc->sc_lock);
319 if (error) {
320 DPRINTF("ucom_attach failed\n");
321 goto detach;
322 }
323 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
324
325 return (0);
326
327 detach:
328 ubsa_detach(dev);
329 return (ENXIO);
330 }
331
332 static int
ubsa_detach(device_t dev)333 ubsa_detach(device_t dev)
334 {
335 struct ubsa_softc *sc = device_get_softc(dev);
336
337 DPRINTF("sc=%p\n", sc);
338
339 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
340 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER);
341 lockuninit(&sc->sc_lock);
342
343 return (0);
344 }
345
346 static void
ubsa_cfg_request(struct ubsa_softc * sc,uint8_t index,uint16_t value)347 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value)
348 {
349 struct usb_device_request req;
350 usb_error_t err;
351
352 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
353 req.bRequest = index;
354 USETW(req.wValue, value);
355 req.wIndex[0] = sc->sc_iface_no;
356 req.wIndex[1] = 0;
357 USETW(req.wLength, 0);
358
359 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
360 &req, NULL, 0, 1000);
361 if (err) {
362 DPRINTFN(0, "device request failed, err=%s "
363 "(ignored)\n", usbd_errstr(err));
364 }
365 }
366
367 static void
ubsa_cfg_set_dtr(struct ucom_softc * ucom,uint8_t onoff)368 ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
369 {
370 struct ubsa_softc *sc = ucom->sc_parent;
371
372 DPRINTF("onoff = %d\n", onoff);
373
374 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0);
375 }
376
377 static void
ubsa_cfg_set_rts(struct ucom_softc * ucom,uint8_t onoff)378 ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
379 {
380 struct ubsa_softc *sc = ucom->sc_parent;
381
382 DPRINTF("onoff = %d\n", onoff);
383
384 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0);
385 }
386
387 static void
ubsa_cfg_set_break(struct ucom_softc * ucom,uint8_t onoff)388 ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
389 {
390 struct ubsa_softc *sc = ucom->sc_parent;
391
392 DPRINTF("onoff = %d\n", onoff);
393
394 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0);
395 }
396
397 static int
ubsa_pre_param(struct ucom_softc * ucom,struct termios * t)398 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t)
399 {
400
401 DPRINTF("sc = %p\n", ucom->sc_parent);
402
403 switch (t->c_ospeed) {
404 case B0:
405 case B300:
406 case B600:
407 case B1200:
408 case B2400:
409 case B4800:
410 case B9600:
411 case B19200:
412 case B38400:
413 case B57600:
414 case B115200:
415 case B230400:
416 break;
417 default:
418 return (EINVAL);
419 }
420 return (0);
421 }
422
423 static void
ubsa_cfg_param(struct ucom_softc * ucom,struct termios * t)424 ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t)
425 {
426 struct ubsa_softc *sc = ucom->sc_parent;
427 uint16_t value = 0;
428
429 DPRINTF("sc = %p\n", sc);
430
431 switch (t->c_ospeed) {
432 case B0:
433 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0);
434 ubsa_cfg_set_dtr(&sc->sc_ucom, 0);
435 ubsa_cfg_set_rts(&sc->sc_ucom, 0);
436 break;
437 case B300:
438 case B600:
439 case B1200:
440 case B2400:
441 case B4800:
442 case B9600:
443 case B19200:
444 case B38400:
445 case B57600:
446 case B115200:
447 case B230400:
448 value = B230400 / t->c_ospeed;
449 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value);
450 break;
451 default:
452 return;
453 }
454
455 if (t->c_cflag & PARENB)
456 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN;
457 else
458 value = UBSA_PARITY_NONE;
459
460 ubsa_cfg_request(sc, UBSA_REG_PARITY, value);
461
462 switch (t->c_cflag & CSIZE) {
463 case CS5:
464 value = 0;
465 break;
466 case CS6:
467 value = 1;
468 break;
469 case CS7:
470 value = 2;
471 break;
472 default:
473 case CS8:
474 value = 3;
475 break;
476 }
477
478 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value);
479
480 value = (t->c_cflag & CSTOPB) ? 1 : 0;
481
482 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value);
483
484 value = 0;
485 if (t->c_cflag & CRTSCTS)
486 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS;
487
488 if (t->c_iflag & (IXON | IXOFF))
489 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON;
490
491 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value);
492 }
493
494 static void
ubsa_start_read(struct ucom_softc * ucom)495 ubsa_start_read(struct ucom_softc *ucom)
496 {
497 struct ubsa_softc *sc = ucom->sc_parent;
498
499 /* start interrupt endpoint */
500 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]);
501
502 /* start read endpoint */
503 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]);
504 }
505
506 static void
ubsa_stop_read(struct ucom_softc * ucom)507 ubsa_stop_read(struct ucom_softc *ucom)
508 {
509 struct ubsa_softc *sc = ucom->sc_parent;
510
511 /* stop interrupt endpoint */
512 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]);
513
514 /* stop read endpoint */
515 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]);
516 }
517
518 static void
ubsa_start_write(struct ucom_softc * ucom)519 ubsa_start_write(struct ucom_softc *ucom)
520 {
521 struct ubsa_softc *sc = ucom->sc_parent;
522
523 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]);
524 }
525
526 static void
ubsa_stop_write(struct ucom_softc * ucom)527 ubsa_stop_write(struct ucom_softc *ucom)
528 {
529 struct ubsa_softc *sc = ucom->sc_parent;
530
531 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]);
532 }
533
534 static void
ubsa_cfg_get_status(struct ucom_softc * ucom,uint8_t * lsr,uint8_t * msr)535 ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
536 {
537 struct ubsa_softc *sc = ucom->sc_parent;
538
539 DPRINTF("\n");
540
541 *lsr = sc->sc_lsr;
542 *msr = sc->sc_msr;
543 }
544
545 static void
ubsa_write_callback(struct usb_xfer * xfer,usb_error_t error)546 ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error)
547 {
548 struct ubsa_softc *sc = usbd_xfer_softc(xfer);
549 struct usb_page_cache *pc;
550 uint32_t actlen;
551
552 switch (USB_GET_STATE(xfer)) {
553 case USB_ST_SETUP:
554 case USB_ST_TRANSFERRED:
555 tr_setup:
556 pc = usbd_xfer_get_frame(xfer, 0);
557 if (ucom_get_data(&sc->sc_ucom, pc, 0,
558 UBSA_BSIZE, &actlen)) {
559
560 usbd_xfer_set_frame_len(xfer, 0, actlen);
561 usbd_transfer_submit(xfer);
562 }
563 return;
564
565 default: /* Error */
566 if (error != USB_ERR_CANCELLED) {
567 /* try to clear stall first */
568 usbd_xfer_set_stall(xfer);
569 goto tr_setup;
570 }
571 return;
572
573 }
574 }
575
576 static void
ubsa_read_callback(struct usb_xfer * xfer,usb_error_t error)577 ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error)
578 {
579 struct ubsa_softc *sc = usbd_xfer_softc(xfer);
580 struct usb_page_cache *pc;
581 int actlen;
582
583 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
584
585 switch (USB_GET_STATE(xfer)) {
586 case USB_ST_TRANSFERRED:
587 pc = usbd_xfer_get_frame(xfer, 0);
588 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
589
590 case USB_ST_SETUP:
591 tr_setup:
592 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
593 usbd_transfer_submit(xfer);
594 return;
595
596 default: /* Error */
597 if (error != USB_ERR_CANCELLED) {
598 /* try to clear stall first */
599 usbd_xfer_set_stall(xfer);
600 goto tr_setup;
601 }
602 return;
603
604 }
605 }
606
607 static void
ubsa_intr_callback(struct usb_xfer * xfer,usb_error_t error)608 ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error)
609 {
610 struct ubsa_softc *sc = usbd_xfer_softc(xfer);
611 struct usb_page_cache *pc;
612 uint8_t buf[4];
613 int actlen;
614
615 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
616
617 switch (USB_GET_STATE(xfer)) {
618 case USB_ST_TRANSFERRED:
619
620 if (actlen >= sizeof(buf)) {
621 pc = usbd_xfer_get_frame(xfer, 0);
622 usbd_copy_out(pc, 0, buf, sizeof(buf));
623
624 /*
625 * incidentally, Belkin adapter status bits match
626 * UART 16550 bits
627 */
628 sc->sc_lsr = buf[2];
629 sc->sc_msr = buf[3];
630
631 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n",
632 sc->sc_lsr, sc->sc_msr);
633
634 ucom_status_change(&sc->sc_ucom);
635 } else {
636 DPRINTF("ignoring short packet, %d bytes\n", actlen);
637 }
638
639 case USB_ST_SETUP:
640 tr_setup:
641 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
642 usbd_transfer_submit(xfer);
643 return;
644
645 default: /* Error */
646 if (error != USB_ERR_CANCELLED) {
647 /* try to clear stall first */
648 usbd_xfer_set_stall(xfer);
649 goto tr_setup;
650 }
651 return;
652
653 }
654 }
655
656 static void
ubsa_poll(struct ucom_softc * ucom)657 ubsa_poll(struct ucom_softc *ucom)
658 {
659 struct ubsa_softc *sc = ucom->sc_parent;
660 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER);
661
662 }
663