1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD AND BSD-2-Clause-NetBSD
3 *
4 * Copyright (c) 2002, Alexander Kabaev <kan.FreeBSD.org>.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 /*-
32 * Copyright (c) 2001 The NetBSD Foundation, Inc.
33 * All rights reserved.
34 *
35 * This code is derived from software contributed to The NetBSD Foundation
36 * by Ichiro FUKUHARA ([email protected]).
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
48 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
49 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
50 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
51 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
52 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
53 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
54 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
55 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
56 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
57 * POSSIBILITY OF SUCH DAMAGE.
58 */
59
60 #include <sys/stdint.h>
61 #include <sys/stddef.h>
62 #include <sys/param.h>
63 #include <sys/queue.h>
64 #include <sys/types.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/bus.h>
68 #include <sys/module.h>
69 #include <sys/lock.h>
70 #include <sys/mutex.h>
71 #include <sys/condvar.h>
72 #include <sys/sysctl.h>
73 #include <sys/sx.h>
74 #include <sys/unistd.h>
75 #include <sys/callout.h>
76 #include <sys/malloc.h>
77 #include <sys/priv.h>
78
79 #include <dev/usb/usb.h>
80 #include <dev/usb/usbdi.h>
81 #include <dev/usb/usbdi_util.h>
82 #include "usbdevs.h"
83
84 #define USB_DEBUG_VAR ubsa_debug
85 #include <dev/usb/usb_debug.h>
86 #include <dev/usb/usb_process.h>
87
88 #include <dev/usb/serial/usb_serial.h>
89
90 #ifdef USB_DEBUG
91 static int ubsa_debug = 0;
92
93 static SYSCTL_NODE(_hw_usb, OID_AUTO, ubsa, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
94 "USB ubsa");
95 SYSCTL_INT(_hw_usb_ubsa, OID_AUTO, debug, CTLFLAG_RWTUN,
96 &ubsa_debug, 0, "ubsa debug level");
97 #endif
98
99 #define UBSA_BSIZE 1024 /* bytes */
100
101 #define UBSA_CONFIG_INDEX 0
102 #define UBSA_IFACE_INDEX 0
103
104 #define UBSA_REG_BAUDRATE 0x00
105 #define UBSA_REG_STOP_BITS 0x01
106 #define UBSA_REG_DATA_BITS 0x02
107 #define UBSA_REG_PARITY 0x03
108 #define UBSA_REG_DTR 0x0A
109 #define UBSA_REG_RTS 0x0B
110 #define UBSA_REG_BREAK 0x0C
111 #define UBSA_REG_FLOW_CTRL 0x10
112
113 #define UBSA_PARITY_NONE 0x00
114 #define UBSA_PARITY_EVEN 0x01
115 #define UBSA_PARITY_ODD 0x02
116 #define UBSA_PARITY_MARK 0x03
117 #define UBSA_PARITY_SPACE 0x04
118
119 #define UBSA_FLOW_NONE 0x0000
120 #define UBSA_FLOW_OCTS 0x0001
121 #define UBSA_FLOW_ODSR 0x0002
122 #define UBSA_FLOW_IDSR 0x0004
123 #define UBSA_FLOW_IDTR 0x0008
124 #define UBSA_FLOW_IRTS 0x0010
125 #define UBSA_FLOW_ORTS 0x0020
126 #define UBSA_FLOW_UNKNOWN 0x0040
127 #define UBSA_FLOW_OXON 0x0080
128 #define UBSA_FLOW_IXON 0x0100
129
130 /* line status register */
131 #define UBSA_LSR_TSRE 0x40 /* Transmitter empty: byte sent */
132 #define UBSA_LSR_TXRDY 0x20 /* Transmitter buffer empty */
133 #define UBSA_LSR_BI 0x10 /* Break detected */
134 #define UBSA_LSR_FE 0x08 /* Framing error: bad stop bit */
135 #define UBSA_LSR_PE 0x04 /* Parity error */
136 #define UBSA_LSR_OE 0x02 /* Overrun, lost incoming byte */
137 #define UBSA_LSR_RXRDY 0x01 /* Byte ready in Receive Buffer */
138 #define UBSA_LSR_RCV_MASK 0x1f /* Mask for incoming data or error */
139
140 /* modem status register */
141 /* All deltas are from the last read of the MSR. */
142 #define UBSA_MSR_DCD 0x80 /* Current Data Carrier Detect */
143 #define UBSA_MSR_RI 0x40 /* Current Ring Indicator */
144 #define UBSA_MSR_DSR 0x20 /* Current Data Set Ready */
145 #define UBSA_MSR_CTS 0x10 /* Current Clear to Send */
146 #define UBSA_MSR_DDCD 0x08 /* DCD has changed state */
147 #define UBSA_MSR_TERI 0x04 /* RI has toggled low to high */
148 #define UBSA_MSR_DDSR 0x02 /* DSR has changed state */
149 #define UBSA_MSR_DCTS 0x01 /* CTS has changed state */
150
151 enum {
152 UBSA_BULK_DT_WR,
153 UBSA_BULK_DT_RD,
154 UBSA_INTR_DT_RD,
155 UBSA_N_TRANSFER,
156 };
157
158 struct ubsa_softc {
159 struct ucom_super_softc sc_super_ucom;
160 struct ucom_softc sc_ucom;
161
162 struct usb_xfer *sc_xfer[UBSA_N_TRANSFER];
163 struct usb_device *sc_udev;
164 struct mtx sc_mtx;
165
166 uint8_t sc_iface_no; /* interface number */
167 uint8_t sc_iface_index; /* interface index */
168 uint8_t sc_lsr; /* local status register */
169 uint8_t sc_msr; /* UBSA status register */
170 };
171
172 static device_probe_t ubsa_probe;
173 static device_attach_t ubsa_attach;
174 static device_detach_t ubsa_detach;
175 static void ubsa_free_softc(struct ubsa_softc *);
176
177 static usb_callback_t ubsa_write_callback;
178 static usb_callback_t ubsa_read_callback;
179 static usb_callback_t ubsa_intr_callback;
180
181 static void ubsa_cfg_request(struct ubsa_softc *, uint8_t, uint16_t);
182 static void ubsa_free(struct ucom_softc *);
183 static void ubsa_cfg_set_dtr(struct ucom_softc *, uint8_t);
184 static void ubsa_cfg_set_rts(struct ucom_softc *, uint8_t);
185 static void ubsa_cfg_set_break(struct ucom_softc *, uint8_t);
186 static int ubsa_pre_param(struct ucom_softc *, struct termios *);
187 static void ubsa_cfg_param(struct ucom_softc *, struct termios *);
188 static void ubsa_start_read(struct ucom_softc *);
189 static void ubsa_stop_read(struct ucom_softc *);
190 static void ubsa_start_write(struct ucom_softc *);
191 static void ubsa_stop_write(struct ucom_softc *);
192 static void ubsa_cfg_get_status(struct ucom_softc *, uint8_t *,
193 uint8_t *);
194 static void ubsa_poll(struct ucom_softc *ucom);
195
196 static const struct usb_config ubsa_config[UBSA_N_TRANSFER] = {
197 [UBSA_BULK_DT_WR] = {
198 .type = UE_BULK,
199 .endpoint = UE_ADDR_ANY,
200 .direction = UE_DIR_OUT,
201 .bufsize = UBSA_BSIZE, /* bytes */
202 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
203 .callback = &ubsa_write_callback,
204 },
205
206 [UBSA_BULK_DT_RD] = {
207 .type = UE_BULK,
208 .endpoint = UE_ADDR_ANY,
209 .direction = UE_DIR_IN,
210 .bufsize = UBSA_BSIZE, /* bytes */
211 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
212 .callback = &ubsa_read_callback,
213 },
214
215 [UBSA_INTR_DT_RD] = {
216 .type = UE_INTERRUPT,
217 .endpoint = UE_ADDR_ANY,
218 .direction = UE_DIR_IN,
219 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
220 .bufsize = 0, /* use wMaxPacketSize */
221 .callback = &ubsa_intr_callback,
222 },
223 };
224
225 static const struct ucom_callback ubsa_callback = {
226 .ucom_cfg_get_status = &ubsa_cfg_get_status,
227 .ucom_cfg_set_dtr = &ubsa_cfg_set_dtr,
228 .ucom_cfg_set_rts = &ubsa_cfg_set_rts,
229 .ucom_cfg_set_break = &ubsa_cfg_set_break,
230 .ucom_cfg_param = &ubsa_cfg_param,
231 .ucom_pre_param = &ubsa_pre_param,
232 .ucom_start_read = &ubsa_start_read,
233 .ucom_stop_read = &ubsa_stop_read,
234 .ucom_start_write = &ubsa_start_write,
235 .ucom_stop_write = &ubsa_stop_write,
236 .ucom_poll = &ubsa_poll,
237 .ucom_free = &ubsa_free,
238 };
239
240 static const STRUCT_USB_HOST_ID ubsa_devs[] = {
241 /* AnyData ADU-500A */
242 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_500A, 0)},
243 /* AnyData ADU-E100A/H */
244 {USB_VPI(USB_VENDOR_ANYDATA, USB_PRODUCT_ANYDATA_ADU_E100X, 0)},
245 /* Axesstel MV100H */
246 {USB_VPI(USB_VENDOR_AXESSTEL, USB_PRODUCT_AXESSTEL_DATAMODEM, 0)},
247 /* BELKIN F5U103 */
248 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U103, 0)},
249 /* BELKIN F5U120 */
250 {USB_VPI(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U120, 0)},
251 /* GoHubs GO-COM232 */
252 {USB_VPI(USB_VENDOR_ETEK, USB_PRODUCT_ETEK_1COM, 0)},
253 /* GoHubs GO-COM232 */
254 {USB_VPI(USB_VENDOR_GOHUBS, USB_PRODUCT_GOHUBS_GOCOM232, 0)},
255 /* Peracom */
256 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_SERIAL1, 0)},
257 };
258
259 static device_method_t ubsa_methods[] = {
260 DEVMETHOD(device_probe, ubsa_probe),
261 DEVMETHOD(device_attach, ubsa_attach),
262 DEVMETHOD(device_detach, ubsa_detach),
263 DEVMETHOD_END
264 };
265
266 static devclass_t ubsa_devclass;
267
268 static driver_t ubsa_driver = {
269 .name = "ubsa",
270 .methods = ubsa_methods,
271 .size = sizeof(struct ubsa_softc),
272 };
273
274 DRIVER_MODULE(ubsa, uhub, ubsa_driver, ubsa_devclass, NULL, 0);
275 MODULE_DEPEND(ubsa, ucom, 1, 1, 1);
276 MODULE_DEPEND(ubsa, usb, 1, 1, 1);
277 MODULE_VERSION(ubsa, 1);
278 USB_PNP_HOST_INFO(ubsa_devs);
279
280 static int
ubsa_probe(device_t dev)281 ubsa_probe(device_t dev)
282 {
283 struct usb_attach_arg *uaa = device_get_ivars(dev);
284
285 if (uaa->usb_mode != USB_MODE_HOST) {
286 return (ENXIO);
287 }
288 if (uaa->info.bConfigIndex != UBSA_CONFIG_INDEX) {
289 return (ENXIO);
290 }
291 if (uaa->info.bIfaceIndex != UBSA_IFACE_INDEX) {
292 return (ENXIO);
293 }
294 return (usbd_lookup_id_by_uaa(ubsa_devs, sizeof(ubsa_devs), uaa));
295 }
296
297 static int
ubsa_attach(device_t dev)298 ubsa_attach(device_t dev)
299 {
300 struct usb_attach_arg *uaa = device_get_ivars(dev);
301 struct ubsa_softc *sc = device_get_softc(dev);
302 int error;
303
304 DPRINTF("sc=%p\n", sc);
305
306 device_set_usb_desc(dev);
307 mtx_init(&sc->sc_mtx, "ubsa", NULL, MTX_DEF);
308 ucom_ref(&sc->sc_super_ucom);
309
310 sc->sc_udev = uaa->device;
311 sc->sc_iface_no = uaa->info.bIfaceNum;
312 sc->sc_iface_index = UBSA_IFACE_INDEX;
313
314 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index,
315 sc->sc_xfer, ubsa_config, UBSA_N_TRANSFER, sc, &sc->sc_mtx);
316
317 if (error) {
318 DPRINTF("could not allocate all pipes\n");
319 goto detach;
320 }
321 /* clear stall at first run */
322 mtx_lock(&sc->sc_mtx);
323 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_WR]);
324 usbd_xfer_set_stall(sc->sc_xfer[UBSA_BULK_DT_RD]);
325 mtx_unlock(&sc->sc_mtx);
326
327 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
328 &ubsa_callback, &sc->sc_mtx);
329 if (error) {
330 DPRINTF("ucom_attach failed\n");
331 goto detach;
332 }
333 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
334
335 return (0);
336
337 detach:
338 ubsa_detach(dev);
339 return (ENXIO);
340 }
341
342 static int
ubsa_detach(device_t dev)343 ubsa_detach(device_t dev)
344 {
345 struct ubsa_softc *sc = device_get_softc(dev);
346
347 DPRINTF("sc=%p\n", sc);
348
349 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
350 usbd_transfer_unsetup(sc->sc_xfer, UBSA_N_TRANSFER);
351
352 device_claim_softc(dev);
353
354 ubsa_free_softc(sc);
355
356 return (0);
357 }
358
359 UCOM_UNLOAD_DRAIN(ubsa);
360
361 static void
ubsa_free_softc(struct ubsa_softc * sc)362 ubsa_free_softc(struct ubsa_softc *sc)
363 {
364 if (ucom_unref(&sc->sc_super_ucom)) {
365 mtx_destroy(&sc->sc_mtx);
366 device_free_softc(sc);
367 }
368 }
369
370 static void
ubsa_free(struct ucom_softc * ucom)371 ubsa_free(struct ucom_softc *ucom)
372 {
373 ubsa_free_softc(ucom->sc_parent);
374 }
375
376 static void
ubsa_cfg_request(struct ubsa_softc * sc,uint8_t index,uint16_t value)377 ubsa_cfg_request(struct ubsa_softc *sc, uint8_t index, uint16_t value)
378 {
379 struct usb_device_request req;
380 usb_error_t err;
381
382 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
383 req.bRequest = index;
384 USETW(req.wValue, value);
385 req.wIndex[0] = sc->sc_iface_no;
386 req.wIndex[1] = 0;
387 USETW(req.wLength, 0);
388
389 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
390 &req, NULL, 0, 1000);
391 if (err) {
392 DPRINTFN(0, "device request failed, err=%s "
393 "(ignored)\n", usbd_errstr(err));
394 }
395 }
396
397 static void
ubsa_cfg_set_dtr(struct ucom_softc * ucom,uint8_t onoff)398 ubsa_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
399 {
400 struct ubsa_softc *sc = ucom->sc_parent;
401
402 DPRINTF("onoff = %d\n", onoff);
403
404 ubsa_cfg_request(sc, UBSA_REG_DTR, onoff ? 1 : 0);
405 }
406
407 static void
ubsa_cfg_set_rts(struct ucom_softc * ucom,uint8_t onoff)408 ubsa_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
409 {
410 struct ubsa_softc *sc = ucom->sc_parent;
411
412 DPRINTF("onoff = %d\n", onoff);
413
414 ubsa_cfg_request(sc, UBSA_REG_RTS, onoff ? 1 : 0);
415 }
416
417 static void
ubsa_cfg_set_break(struct ucom_softc * ucom,uint8_t onoff)418 ubsa_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
419 {
420 struct ubsa_softc *sc = ucom->sc_parent;
421
422 DPRINTF("onoff = %d\n", onoff);
423
424 ubsa_cfg_request(sc, UBSA_REG_BREAK, onoff ? 1 : 0);
425 }
426
427 static int
ubsa_pre_param(struct ucom_softc * ucom,struct termios * t)428 ubsa_pre_param(struct ucom_softc *ucom, struct termios *t)
429 {
430
431 DPRINTF("sc = %p\n", ucom->sc_parent);
432
433 switch (t->c_ospeed) {
434 case B0:
435 case B300:
436 case B600:
437 case B1200:
438 case B2400:
439 case B4800:
440 case B9600:
441 case B19200:
442 case B38400:
443 case B57600:
444 case B115200:
445 case B230400:
446 break;
447 default:
448 return (EINVAL);
449 }
450 return (0);
451 }
452
453 static void
ubsa_cfg_param(struct ucom_softc * ucom,struct termios * t)454 ubsa_cfg_param(struct ucom_softc *ucom, struct termios *t)
455 {
456 struct ubsa_softc *sc = ucom->sc_parent;
457 uint16_t value = 0;
458
459 DPRINTF("sc = %p\n", sc);
460
461 switch (t->c_ospeed) {
462 case B0:
463 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, 0);
464 ubsa_cfg_set_dtr(&sc->sc_ucom, 0);
465 ubsa_cfg_set_rts(&sc->sc_ucom, 0);
466 break;
467 case B300:
468 case B600:
469 case B1200:
470 case B2400:
471 case B4800:
472 case B9600:
473 case B19200:
474 case B38400:
475 case B57600:
476 case B115200:
477 case B230400:
478 value = B230400 / t->c_ospeed;
479 ubsa_cfg_request(sc, UBSA_REG_BAUDRATE, value);
480 break;
481 default:
482 return;
483 }
484
485 if (t->c_cflag & PARENB)
486 value = (t->c_cflag & PARODD) ? UBSA_PARITY_ODD : UBSA_PARITY_EVEN;
487 else
488 value = UBSA_PARITY_NONE;
489
490 ubsa_cfg_request(sc, UBSA_REG_PARITY, value);
491
492 switch (t->c_cflag & CSIZE) {
493 case CS5:
494 value = 0;
495 break;
496 case CS6:
497 value = 1;
498 break;
499 case CS7:
500 value = 2;
501 break;
502 default:
503 case CS8:
504 value = 3;
505 break;
506 }
507
508 ubsa_cfg_request(sc, UBSA_REG_DATA_BITS, value);
509
510 value = (t->c_cflag & CSTOPB) ? 1 : 0;
511
512 ubsa_cfg_request(sc, UBSA_REG_STOP_BITS, value);
513
514 value = 0;
515 if (t->c_cflag & CRTSCTS)
516 value |= UBSA_FLOW_OCTS | UBSA_FLOW_IRTS;
517
518 if (t->c_iflag & (IXON | IXOFF))
519 value |= UBSA_FLOW_OXON | UBSA_FLOW_IXON;
520
521 ubsa_cfg_request(sc, UBSA_REG_FLOW_CTRL, value);
522 }
523
524 static void
ubsa_start_read(struct ucom_softc * ucom)525 ubsa_start_read(struct ucom_softc *ucom)
526 {
527 struct ubsa_softc *sc = ucom->sc_parent;
528
529 /* start interrupt endpoint */
530 usbd_transfer_start(sc->sc_xfer[UBSA_INTR_DT_RD]);
531
532 /* start read endpoint */
533 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_RD]);
534 }
535
536 static void
ubsa_stop_read(struct ucom_softc * ucom)537 ubsa_stop_read(struct ucom_softc *ucom)
538 {
539 struct ubsa_softc *sc = ucom->sc_parent;
540
541 /* stop interrupt endpoint */
542 usbd_transfer_stop(sc->sc_xfer[UBSA_INTR_DT_RD]);
543
544 /* stop read endpoint */
545 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_RD]);
546 }
547
548 static void
ubsa_start_write(struct ucom_softc * ucom)549 ubsa_start_write(struct ucom_softc *ucom)
550 {
551 struct ubsa_softc *sc = ucom->sc_parent;
552
553 usbd_transfer_start(sc->sc_xfer[UBSA_BULK_DT_WR]);
554 }
555
556 static void
ubsa_stop_write(struct ucom_softc * ucom)557 ubsa_stop_write(struct ucom_softc *ucom)
558 {
559 struct ubsa_softc *sc = ucom->sc_parent;
560
561 usbd_transfer_stop(sc->sc_xfer[UBSA_BULK_DT_WR]);
562 }
563
564 static void
ubsa_cfg_get_status(struct ucom_softc * ucom,uint8_t * lsr,uint8_t * msr)565 ubsa_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
566 {
567 struct ubsa_softc *sc = ucom->sc_parent;
568
569 DPRINTF("\n");
570
571 *lsr = sc->sc_lsr;
572 *msr = sc->sc_msr;
573 }
574
575 static void
ubsa_write_callback(struct usb_xfer * xfer,usb_error_t error)576 ubsa_write_callback(struct usb_xfer *xfer, usb_error_t error)
577 {
578 struct ubsa_softc *sc = usbd_xfer_softc(xfer);
579 struct usb_page_cache *pc;
580 uint32_t actlen;
581
582 switch (USB_GET_STATE(xfer)) {
583 case USB_ST_SETUP:
584 case USB_ST_TRANSFERRED:
585 tr_setup:
586 pc = usbd_xfer_get_frame(xfer, 0);
587 if (ucom_get_data(&sc->sc_ucom, pc, 0,
588 UBSA_BSIZE, &actlen)) {
589 usbd_xfer_set_frame_len(xfer, 0, actlen);
590 usbd_transfer_submit(xfer);
591 }
592 return;
593
594 default: /* Error */
595 if (error != USB_ERR_CANCELLED) {
596 /* try to clear stall first */
597 usbd_xfer_set_stall(xfer);
598 goto tr_setup;
599 }
600 return;
601 }
602 }
603
604 static void
ubsa_read_callback(struct usb_xfer * xfer,usb_error_t error)605 ubsa_read_callback(struct usb_xfer *xfer, usb_error_t error)
606 {
607 struct ubsa_softc *sc = usbd_xfer_softc(xfer);
608 struct usb_page_cache *pc;
609 int actlen;
610
611 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
612
613 switch (USB_GET_STATE(xfer)) {
614 case USB_ST_TRANSFERRED:
615 pc = usbd_xfer_get_frame(xfer, 0);
616 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
617
618 case USB_ST_SETUP:
619 tr_setup:
620 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
621 usbd_transfer_submit(xfer);
622 return;
623
624 default: /* Error */
625 if (error != USB_ERR_CANCELLED) {
626 /* try to clear stall first */
627 usbd_xfer_set_stall(xfer);
628 goto tr_setup;
629 }
630 return;
631 }
632 }
633
634 static void
ubsa_intr_callback(struct usb_xfer * xfer,usb_error_t error)635 ubsa_intr_callback(struct usb_xfer *xfer, usb_error_t error)
636 {
637 struct ubsa_softc *sc = usbd_xfer_softc(xfer);
638 struct usb_page_cache *pc;
639 uint8_t buf[4];
640 int actlen;
641
642 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
643
644 switch (USB_GET_STATE(xfer)) {
645 case USB_ST_TRANSFERRED:
646
647 if (actlen >= (int)sizeof(buf)) {
648 pc = usbd_xfer_get_frame(xfer, 0);
649 usbd_copy_out(pc, 0, buf, sizeof(buf));
650
651 /*
652 * MSR bits need translation from ns16550 to SER_* values.
653 * LSR bits are ns16550 in hardware and ucom.
654 */
655 sc->sc_msr = 0;
656 if (buf[3] & UBSA_MSR_CTS)
657 sc->sc_msr |= SER_CTS;
658 if (buf[3] & UBSA_MSR_DCD)
659 sc->sc_msr |= SER_DCD;
660 if (buf[3] & UBSA_MSR_RI)
661 sc->sc_msr |= SER_RI;
662 if (buf[3] & UBSA_MSR_DSR)
663 sc->sc_msr |= SER_DSR;
664 sc->sc_lsr = buf[2];
665
666 DPRINTF("lsr = 0x%02x, msr = 0x%02x\n",
667 sc->sc_lsr, sc->sc_msr);
668
669 ucom_status_change(&sc->sc_ucom);
670 } else {
671 DPRINTF("ignoring short packet, %d bytes\n", actlen);
672 }
673 /* FALLTHROUGH */
674 case USB_ST_SETUP:
675 tr_setup:
676 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
677 usbd_transfer_submit(xfer);
678 return;
679
680 default: /* Error */
681 if (error != USB_ERR_CANCELLED) {
682 /* try to clear stall first */
683 usbd_xfer_set_stall(xfer);
684 goto tr_setup;
685 }
686 return;
687 }
688 }
689
690 static void
ubsa_poll(struct ucom_softc * ucom)691 ubsa_poll(struct ucom_softc *ucom)
692 {
693 struct ubsa_softc *sc = ucom->sc_parent;
694 usbd_transfer_poll(sc->sc_xfer, UBSA_N_TRANSFER);
695
696 }
697