1/* $FreeBSD: head/sys/dev/usb/serial/umoscom.c 192499 2009-05-21 00:04:17Z thompsa $ */
2/* $OpenBSD: umoscom.c,v 1.2 2006/10/26 06:02:43 jsg Exp $ */
3
4/*
5 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20#include "usbdevs.h"
21#include <dev/usb/usb.h>
22#include <dev/usb/usb_mfunc.h>
23#include <dev/usb/usb_error.h>
24#include <dev/usb/usb_cdc.h>
25
26#define USB_DEBUG_VAR umoscom_debug
27
28#include <dev/usb/usb_core.h>
29#include <dev/usb/usb_debug.h>
30#include <dev/usb/usb_process.h>
31#include <dev/usb/usb_request.h>
32#include <dev/usb/usb_lookup.h>
33#include <dev/usb/usb_util.h>
34#include <dev/usb/usb_busdma.h>
35
36#include <dev/usb/serial/usb_serial.h>
37
38#if USB_DEBUG
39static int umoscom_debug = 0;
40
41SYSCTL_NODE(_hw_usb2, OID_AUTO, umoscom, CTLFLAG_RW, 0, "USB umoscom");
42SYSCTL_INT(_hw_usb2_umoscom, OID_AUTO, debug, CTLFLAG_RW,
43 &umoscom_debug, 0, "Debug level");
44#endif
45
46#define UMOSCOM_BUFSIZE 1024 /* bytes */
47
48#define UMOSCOM_CONFIG_INDEX 0
49#define UMOSCOM_IFACE_INDEX 0
50
51/* interrupt packet */
52#define UMOSCOM_IIR_RLS 0x06
53#define UMOSCOM_IIR_RDA 0x04
54#define UMOSCOM_IIR_CTI 0x0c
55#define UMOSCOM_IIR_THR 0x02
56#define UMOSCOM_IIR_MS 0x00
57
58/* registers */
59#define UMOSCOM_READ 0x0d
60#define UMOSCOM_WRITE 0x0e
61#define UMOSCOM_UART_REG 0x0300
62#define UMOSCOM_VEND_REG 0x0000
63
64#define UMOSCOM_TXBUF 0x00 /* Write */
65#define UMOSCOM_RXBUF 0x00 /* Read */
66#define UMOSCOM_INT 0x01
67#define UMOSCOM_FIFO 0x02 /* Write */
68#define UMOSCOM_ISR 0x02 /* Read */
69#define UMOSCOM_LCR 0x03
70#define UMOSCOM_MCR 0x04
71#define UMOSCOM_LSR 0x05
72#define UMOSCOM_MSR 0x06
73#define UMOSCOM_SCRATCH 0x07
74#define UMOSCOM_DIV_LO 0x08
75#define UMOSCOM_DIV_HI 0x09
76#define UMOSCOM_EFR 0x0a
77#define UMOSCOM_XON1 0x0b
78#define UMOSCOM_XON2 0x0c
79#define UMOSCOM_XOFF1 0x0d
80#define UMOSCOM_XOFF2 0x0e
81
82#define UMOSCOM_BAUDLO 0x00
83#define UMOSCOM_BAUDHI 0x01
84
85#define UMOSCOM_INT_RXEN 0x01
86#define UMOSCOM_INT_TXEN 0x02
87#define UMOSCOM_INT_RSEN 0x04
88#define UMOSCOM_INT_MDMEM 0x08
89#define UMOSCOM_INT_SLEEP 0x10
90#define UMOSCOM_INT_XOFF 0x20
91#define UMOSCOM_INT_RTS 0x40
92
93#define UMOSCOM_FIFO_EN 0x01
94#define UMOSCOM_FIFO_RXCLR 0x02
95#define UMOSCOM_FIFO_TXCLR 0x04
96#define UMOSCOM_FIFO_DMA_BLK 0x08
97#define UMOSCOM_FIFO_TXLVL_MASK 0x30
98#define UMOSCOM_FIFO_TXLVL_8 0x00
99#define UMOSCOM_FIFO_TXLVL_16 0x10
100#define UMOSCOM_FIFO_TXLVL_32 0x20
101#define UMOSCOM_FIFO_TXLVL_56 0x30
102#define UMOSCOM_FIFO_RXLVL_MASK 0xc0
103#define UMOSCOM_FIFO_RXLVL_8 0x00
104#define UMOSCOM_FIFO_RXLVL_16 0x40
105#define UMOSCOM_FIFO_RXLVL_56 0x80
106#define UMOSCOM_FIFO_RXLVL_80 0xc0
107
108#define UMOSCOM_ISR_MDM 0x00
109#define UMOSCOM_ISR_NONE 0x01
110#define UMOSCOM_ISR_TX 0x02
111#define UMOSCOM_ISR_RX 0x04
112#define UMOSCOM_ISR_LINE 0x06
113#define UMOSCOM_ISR_RXTIMEOUT 0x0c
114#define UMOSCOM_ISR_RX_XOFF 0x10
115#define UMOSCOM_ISR_RTSCTS 0x20
116#define UMOSCOM_ISR_FIFOEN 0xc0
117
118#define UMOSCOM_LCR_DBITS(x) ((x) - 5)
119#define UMOSCOM_LCR_STOP_BITS_1 0x00
120#define UMOSCOM_LCR_STOP_BITS_2 0x04 /* 2 if 6-8 bits/char or 1.5 if 5 */
121#define UMOSCOM_LCR_PARITY_NONE 0x00
122#define UMOSCOM_LCR_PARITY_ODD 0x08
123#define UMOSCOM_LCR_PARITY_EVEN 0x18
124#define UMOSCOM_LCR_BREAK 0x40
125#define UMOSCOM_LCR_DIVLATCH_EN 0x80
126
127#define UMOSCOM_MCR_DTR 0x01
128#define UMOSCOM_MCR_RTS 0x02
129#define UMOSCOM_MCR_LOOP 0x04
130#define UMOSCOM_MCR_INTEN 0x08
131#define UMOSCOM_MCR_LOOPBACK 0x10
132#define UMOSCOM_MCR_XONANY 0x20
133#define UMOSCOM_MCR_IRDA_EN 0x40
134#define UMOSCOM_MCR_BAUD_DIV4 0x80
135
136#define UMOSCOM_LSR_RXDATA 0x01
137#define UMOSCOM_LSR_RXOVER 0x02
138#define UMOSCOM_LSR_RXPAR_ERR 0x04
139#define UMOSCOM_LSR_RXFRM_ERR 0x08
140#define UMOSCOM_LSR_RXBREAK 0x10
141#define UMOSCOM_LSR_TXEMPTY 0x20
142#define UMOSCOM_LSR_TXALLEMPTY 0x40
143#define UMOSCOM_LSR_TXFIFO_ERR 0x80
144
145#define UMOSCOM_MSR_CTS_CHG 0x01
146#define UMOSCOM_MSR_DSR_CHG 0x02
147#define UMOSCOM_MSR_RI_CHG 0x04
148#define UMOSCOM_MSR_CD_CHG 0x08
149#define UMOSCOM_MSR_CTS 0x10
150#define UMOSCOM_MSR_RTS 0x20
151#define UMOSCOM_MSR_RI 0x40
152#define UMOSCOM_MSR_CD 0x80
153
154#define UMOSCOM_BAUD_REF 115200
155
156enum {
157 UMOSCOM_BULK_DT_WR,
158 UMOSCOM_BULK_DT_RD,
159 UMOSCOM_INTR_DT_RD,
160 UMOSCOM_N_TRANSFER,
161};
162
163struct umoscom_softc {
164 struct usb2_com_super_softc sc_super_ucom;
165 struct usb2_com_softc sc_ucom;
166
167 struct usb2_xfer *sc_xfer[UMOSCOM_N_TRANSFER];
168 struct usb2_device *sc_udev;
169 struct mtx sc_mtx;
170
171 uint8_t sc_mcr;
172 uint8_t sc_lcr;
173};
174
175/* prototypes */
176
177static device_probe_t umoscom_probe;
178static device_attach_t umoscom_attach;
179static device_detach_t umoscom_detach;
180
181static usb2_callback_t umoscom_write_callback;
182static usb2_callback_t umoscom_read_callback;
183static usb2_callback_t umoscom_intr_callback;
184
185static void umoscom_cfg_open(struct usb2_com_softc *);
186static void umoscom_cfg_close(struct usb2_com_softc *);
187static void umoscom_cfg_set_break(struct usb2_com_softc *, uint8_t);
188static void umoscom_cfg_set_dtr(struct usb2_com_softc *, uint8_t);
189static void umoscom_cfg_set_rts(struct usb2_com_softc *, uint8_t);
190static int umoscom_pre_param(struct usb2_com_softc *, struct termios *);
191static void umoscom_cfg_param(struct usb2_com_softc *, struct termios *);
192static void umoscom_cfg_get_status(struct usb2_com_softc *, uint8_t *,
193 uint8_t *);
194static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t);
195static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t);
196static void umoscom_start_read(struct usb2_com_softc *);
197static void umoscom_stop_read(struct usb2_com_softc *);
198static void umoscom_start_write(struct usb2_com_softc *);
199static void umoscom_stop_write(struct usb2_com_softc *);
200
201static const struct usb2_config umoscom_config_data[UMOSCOM_N_TRANSFER] = {
202
203 [UMOSCOM_BULK_DT_WR] = {
204 .type = UE_BULK,
205 .endpoint = UE_ADDR_ANY,
206 .direction = UE_DIR_OUT,
207 .bufsize = UMOSCOM_BUFSIZE,
208 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
209 .callback = &umoscom_write_callback,
210 },
211
212 [UMOSCOM_BULK_DT_RD] = {
213 .type = UE_BULK,
214 .endpoint = UE_ADDR_ANY,
215 .direction = UE_DIR_IN,
216 .bufsize = UMOSCOM_BUFSIZE,
217 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
218 .callback = &umoscom_read_callback,
219 },
220
221 [UMOSCOM_INTR_DT_RD] = {
222 .type = UE_INTERRUPT,
223 .endpoint = UE_ADDR_ANY,
224 .direction = UE_DIR_IN,
225 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
226 .bufsize = 0, /* use wMaxPacketSize */
227 .callback = &umoscom_intr_callback,
228 },
229};
230
231static const struct usb2_com_callback umoscom_callback = {
232 /* configuration callbacks */
233 .usb2_com_cfg_get_status = &umoscom_cfg_get_status,
234 .usb2_com_cfg_set_dtr = &umoscom_cfg_set_dtr,
235 .usb2_com_cfg_set_rts = &umoscom_cfg_set_rts,
236 .usb2_com_cfg_set_break = &umoscom_cfg_set_break,
237 .usb2_com_cfg_param = &umoscom_cfg_param,
238 .usb2_com_cfg_open = &umoscom_cfg_open,
239 .usb2_com_cfg_close = &umoscom_cfg_close,
240
241 /* other callbacks */
242 .usb2_com_pre_param = &umoscom_pre_param,
243 .usb2_com_start_read = &umoscom_start_read,
244 .usb2_com_stop_read = &umoscom_stop_read,
245 .usb2_com_start_write = &umoscom_start_write,
246 .usb2_com_stop_write = &umoscom_stop_write,
247};
248
249static device_method_t umoscom_methods[] = {
250 DEVMETHOD(device_probe, umoscom_probe),
251 DEVMETHOD(device_attach, umoscom_attach),
252 DEVMETHOD(device_detach, umoscom_detach),
253 {0, 0}
254};
255
256static devclass_t umoscom_devclass;
257
258static driver_t umoscom_driver = {
259 .name = "umoscom",
260 .methods = umoscom_methods,
261 .size = sizeof(struct umoscom_softc),
262};
263
264DRIVER_MODULE(umoscom, uhub, umoscom_driver, umoscom_devclass, NULL, 0);
265MODULE_DEPEND(umoscom, ucom, 1, 1, 1);
266MODULE_DEPEND(umoscom, usb, 1, 1, 1);
267
268static const struct usb2_device_id umoscom_devs[] = {
269 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)}
270};
271
272static int
273umoscom_probe(device_t dev)
274{
275 struct usb2_attach_arg *uaa = device_get_ivars(dev);
276
277 if (uaa->usb_mode != USB_MODE_HOST) {
278 return (ENXIO);
279 }
280 if (uaa->info.bConfigIndex != UMOSCOM_CONFIG_INDEX) {
281 return (ENXIO);
282 }
283 if (uaa->info.bIfaceIndex != UMOSCOM_IFACE_INDEX) {
284 return (ENXIO);
285 }
286 return (usb2_lookup_id_by_uaa(umoscom_devs, sizeof(umoscom_devs), uaa));
287}
288
289static int
290umoscom_attach(device_t dev)
291{
292 struct usb2_attach_arg *uaa = device_get_ivars(dev);
293 struct umoscom_softc *sc = device_get_softc(dev);
294 int error;
295 uint8_t iface_index;
296
297 sc->sc_udev = uaa->device;
298 sc->sc_mcr = 0x08; /* enable interrupts */
299
300 /* XXX the device doesn't provide any ID string, so set a static one */
301 device_set_desc(dev, "MOSCHIP USB Serial Port Adapter");
302 device_printf(dev, "<MOSCHIP USB Serial Port Adapter>\n");
303
304 mtx_init(&sc->sc_mtx, "umoscom", NULL, MTX_DEF);
305
306 iface_index = UMOSCOM_IFACE_INDEX;
307 error = usb2_transfer_setup(uaa->device, &iface_index,
308 sc->sc_xfer, umoscom_config_data,
309 UMOSCOM_N_TRANSFER, sc, &sc->sc_mtx);
310
311 if (error) {
312 goto detach;
313 }
314 /* clear stall at first run */
315 mtx_lock(&sc->sc_mtx);
316 usb2_transfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
317 usb2_transfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
318 mtx_unlock(&sc->sc_mtx);
319
320 error = usb2_com_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
321 &umoscom_callback, &sc->sc_mtx);
322 if (error) {
323 goto detach;
324 }
325 return (0);
326
327detach:
328 device_printf(dev, "attach error: %s\n", usb2_errstr(error));
329 umoscom_detach(dev);
330 return (ENXIO);
331}
332
333static int
334umoscom_detach(device_t dev)
335{
336 struct umoscom_softc *sc = device_get_softc(dev);
337
338 usb2_com_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1);
339 usb2_transfer_unsetup(sc->sc_xfer, UMOSCOM_N_TRANSFER);
340 mtx_destroy(&sc->sc_mtx);
341
342 return (0);
343}
344
345static void
346umoscom_cfg_open(struct usb2_com_softc *ucom)
347{
348 struct umoscom_softc *sc = ucom->sc_parent;
349
350 DPRINTF("\n");
351
352 /* Purge FIFOs or odd things happen */
353 umoscom_cfg_write(sc, UMOSCOM_FIFO, 0x00 | UMOSCOM_UART_REG);
354
355 /* Enable FIFO */
356 umoscom_cfg_write(sc, UMOSCOM_FIFO, UMOSCOM_FIFO_EN |
357 UMOSCOM_FIFO_RXCLR | UMOSCOM_FIFO_TXCLR |
358 UMOSCOM_FIFO_DMA_BLK | UMOSCOM_FIFO_RXLVL_MASK |
359 UMOSCOM_UART_REG);
360
361 /* Enable Interrupt Registers */
362 umoscom_cfg_write(sc, UMOSCOM_INT, 0x0C | UMOSCOM_UART_REG);
363
364 /* Magic */
365 umoscom_cfg_write(sc, 0x01, 0x08);
366
367 /* Magic */
368 umoscom_cfg_write(sc, 0x00, 0x02);
369}
370
371static void
372umoscom_cfg_close(struct usb2_com_softc *ucom)
373{
374 return;
375}
376
377static void
378umoscom_cfg_set_break(struct usb2_com_softc *ucom, uint8_t onoff)
379{
380 struct umoscom_softc *sc = ucom->sc_parent;
381 uint16_t val;
382
383 val = sc->sc_lcr;
384 if (onoff)
385 val |= UMOSCOM_LCR_BREAK;
386
387 umoscom_cfg_write(sc, UMOSCOM_LCR, val | UMOSCOM_UART_REG);
388}
389
390static void
391umoscom_cfg_set_dtr(struct usb2_com_softc *ucom, uint8_t onoff)
392{
393 struct umoscom_softc *sc = ucom->sc_parent;
394
395 if (onoff)
396 sc->sc_mcr |= UMOSCOM_MCR_DTR;
397 else
398 sc->sc_mcr &= ~UMOSCOM_MCR_DTR;
399
400 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG);
401}
402
403static void
404umoscom_cfg_set_rts(struct usb2_com_softc *ucom, uint8_t onoff)
405{
406 struct umoscom_softc *sc = ucom->sc_parent;
407
408 if (onoff)
409 sc->sc_mcr |= UMOSCOM_MCR_RTS;
410 else
411 sc->sc_mcr &= ~UMOSCOM_MCR_RTS;
412
413 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG);
414}
415
416static int
417umoscom_pre_param(struct usb2_com_softc *ucom, struct termios *t)
418{
419 if ((t->c_ospeed <= 1) || (t->c_ospeed > 115200))
420 return (EINVAL);
421
422 return (0);
423}
424
425static void
426umoscom_cfg_param(struct usb2_com_softc *ucom, struct termios *t)
427{
428 struct umoscom_softc *sc = ucom->sc_parent;
429 uint16_t data;
430
431 DPRINTF("speed=%d\n", t->c_ospeed);
432
433 data = ((uint32_t)UMOSCOM_BAUD_REF) / ((uint32_t)t->c_ospeed);
434
435 if (data == 0) {
436 DPRINTF("invalid baud rate!\n");
437 return;
438 }
439 umoscom_cfg_write(sc, UMOSCOM_LCR,
440 UMOSCOM_LCR_DIVLATCH_EN | UMOSCOM_UART_REG);
441
442 umoscom_cfg_write(sc, UMOSCOM_BAUDLO,
443 (data & 0xFF) | UMOSCOM_UART_REG);
444
445 umoscom_cfg_write(sc, UMOSCOM_BAUDHI,
446 ((data >> 8) & 0xFF) | UMOSCOM_UART_REG);
447
448 if (t->c_cflag & CSTOPB)
449 data = UMOSCOM_LCR_STOP_BITS_2;
450 else
451 data = UMOSCOM_LCR_STOP_BITS_1;
452
453 if (t->c_cflag & PARENB) {
454 if (t->c_cflag & PARODD)
455 data |= UMOSCOM_LCR_PARITY_ODD;
456 else
457 data |= UMOSCOM_LCR_PARITY_EVEN;
458 } else
459 data |= UMOSCOM_LCR_PARITY_NONE;
460
461 switch (t->c_cflag & CSIZE) {
462 case CS5:
463 data |= UMOSCOM_LCR_DBITS(5);
464 break;
465 case CS6:
466 data |= UMOSCOM_LCR_DBITS(6);
467 break;
468 case CS7:
469 data |= UMOSCOM_LCR_DBITS(7);
470 break;
471 case CS8:
472 data |= UMOSCOM_LCR_DBITS(8);
473 break;
474 }
475
476 sc->sc_lcr = data;
477 umoscom_cfg_write(sc, UMOSCOM_LCR, data | UMOSCOM_UART_REG);
478}
479
480static void
481umoscom_cfg_get_status(struct usb2_com_softc *ucom, uint8_t *p_lsr, uint8_t *p_msr)
482{
483 struct umoscom_softc *sc = ucom->sc_parent;
484 uint8_t lsr;
485 uint8_t msr;
486
487 DPRINTFN(5, "\n");
488
489 /* read status registers */
490
491 lsr = umoscom_cfg_read(sc, UMOSCOM_LSR);
492 msr = umoscom_cfg_read(sc, UMOSCOM_MSR);
493
494 /* translate bits */
495
496 if (msr & UMOSCOM_MSR_CTS)
497 *p_msr |= SER_CTS;
498
499 if (msr & UMOSCOM_MSR_CD)
500 *p_msr |= SER_DCD;
501
502 if (msr & UMOSCOM_MSR_RI)
503 *p_msr |= SER_RI;
504
505 if (msr & UMOSCOM_MSR_RTS)
506 *p_msr |= SER_DSR;
507}
508
509static void
510umoscom_cfg_write(struct umoscom_softc *sc, uint16_t reg, uint16_t val)
511{
512 struct usb2_device_request req;
513
514 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
515 req.bRequest = UMOSCOM_WRITE;
516 USETW(req.wValue, val);
517 USETW(req.wIndex, reg);
518 USETW(req.wLength, 0);
519
520 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
521 &req, NULL, 0, 1000);
522}
523
524static uint8_t
525umoscom_cfg_read(struct umoscom_softc *sc, uint16_t reg)
526{
527 struct usb2_device_request req;
528 uint8_t val;
529
530 req.bmRequestType = UT_READ_VENDOR_DEVICE;
531 req.bRequest = UMOSCOM_READ;
532 USETW(req.wValue, 0);
533 USETW(req.wIndex, reg);
534 USETW(req.wLength, 1);
535
536 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
537 &req, &val, 0, 1000);
538
539 DPRINTF("reg=0x%04x, val=0x%02x\n", reg, val);
540
541 return (val);
542}
543
544static void
545umoscom_start_read(struct usb2_com_softc *ucom)
546{
547 struct umoscom_softc *sc = ucom->sc_parent;
548
549#if 0
550 /* start interrupt endpoint */
551 usb2_transfer_start(sc->sc_xfer[UMOSCOM_INTR_DT_RD]);
552#endif
553 /* start read endpoint */
554 usb2_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
555}
556
557static void
558umoscom_stop_read(struct usb2_com_softc *ucom)
559{
560 struct umoscom_softc *sc = ucom->sc_parent;
561
562 /* stop interrupt transfer */
563 usb2_transfer_stop(sc->sc_xfer[UMOSCOM_INTR_DT_RD]);
564
565 /* stop read endpoint */
566 usb2_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
567}
568
569static void
570umoscom_start_write(struct usb2_com_softc *ucom)
571{
572 struct umoscom_softc *sc = ucom->sc_parent;
573
574 usb2_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
575}
576
577static void
578umoscom_stop_write(struct usb2_com_softc *ucom)
579{
580 struct umoscom_softc *sc = ucom->sc_parent;
581
582 usb2_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
583}
584
585static void
586umoscom_write_callback(struct usb2_xfer *xfer)
587{
588 struct umoscom_softc *sc = xfer->priv_sc;
589 uint32_t actlen;
590
591 switch (USB_GET_STATE(xfer)) {
592 case USB_ST_SETUP:
593 case USB_ST_TRANSFERRED:
594tr_setup:
595 DPRINTF("\n");
596
597 if (usb2_com_get_data(&sc->sc_ucom, xfer->frbuffers, 0,
598 UMOSCOM_BUFSIZE, &actlen)) {
599
600 xfer->frlengths[0] = actlen;
601 usb2_start_hardware(xfer);
602 }
603 return;
604
605 default: /* Error */
606 if (xfer->error != USB_ERR_CANCELLED) {
607 DPRINTFN(0, "transfer failed\n");
608 /* try to clear stall first */
609 xfer->flags.stall_pipe = 1;
610 goto tr_setup;
611 }
612 return;
613 }
614}
615
616static void
617umoscom_read_callback(struct usb2_xfer *xfer)
618{
619 struct umoscom_softc *sc = xfer->priv_sc;
620
621 switch (USB_GET_STATE(xfer)) {
622 case USB_ST_TRANSFERRED:
623 DPRINTF("got %d bytes\n", xfer->actlen);
624 usb2_com_put_data(&sc->sc_ucom, xfer->frbuffers, 0, xfer->actlen);
625
626 case USB_ST_SETUP:
627tr_setup:
628 DPRINTF("\n");
629
630 xfer->frlengths[0] = xfer->max_data_length;
631 usb2_start_hardware(xfer);
632 return;
633
634 default: /* Error */
635 if (xfer->error != USB_ERR_CANCELLED) {
636 DPRINTFN(0, "transfer failed\n");
637 /* try to clear stall first */
638 xfer->flags.stall_pipe = 1;
639 goto tr_setup;
640 }
641 return;
642 }
643}
644
645static void
646umoscom_intr_callback(struct usb2_xfer *xfer)
647{
648 struct umoscom_softc *sc = xfer->priv_sc;
649
650 switch (USB_GET_STATE(xfer)) {
651 case USB_ST_TRANSFERRED:
652 if (xfer->actlen < 2) {
653 DPRINTF("too short message\n");
654 goto tr_setup;
655 }
656 usb2_com_status_change(&sc->sc_ucom);
657
658 case USB_ST_SETUP:
659tr_setup:
660 xfer->frlengths[0] = xfer->max_data_length;
661 usb2_start_hardware(xfer);
662 return;
663
664 default: /* Error */
665 if (xfer->error != USB_ERR_CANCELLED) {
666 DPRINTFN(0, "transfer failed\n");
667 /* try to clear stall first */
668 xfer->flags.stall_pipe = 1;
669 goto tr_setup;
670 }
671 return;
672 }
673}
2/* $OpenBSD: umoscom.c,v 1.2 2006/10/26 06:02:43 jsg Exp $ */
3
4/*
5 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20#include "usbdevs.h"
21#include <dev/usb/usb.h>
22#include <dev/usb/usb_mfunc.h>
23#include <dev/usb/usb_error.h>
24#include <dev/usb/usb_cdc.h>
25
26#define USB_DEBUG_VAR umoscom_debug
27
28#include <dev/usb/usb_core.h>
29#include <dev/usb/usb_debug.h>
30#include <dev/usb/usb_process.h>
31#include <dev/usb/usb_request.h>
32#include <dev/usb/usb_lookup.h>
33#include <dev/usb/usb_util.h>
34#include <dev/usb/usb_busdma.h>
35
36#include <dev/usb/serial/usb_serial.h>
37
38#if USB_DEBUG
39static int umoscom_debug = 0;
40
41SYSCTL_NODE(_hw_usb2, OID_AUTO, umoscom, CTLFLAG_RW, 0, "USB umoscom");
42SYSCTL_INT(_hw_usb2_umoscom, OID_AUTO, debug, CTLFLAG_RW,
43 &umoscom_debug, 0, "Debug level");
44#endif
45
46#define UMOSCOM_BUFSIZE 1024 /* bytes */
47
48#define UMOSCOM_CONFIG_INDEX 0
49#define UMOSCOM_IFACE_INDEX 0
50
51/* interrupt packet */
52#define UMOSCOM_IIR_RLS 0x06
53#define UMOSCOM_IIR_RDA 0x04
54#define UMOSCOM_IIR_CTI 0x0c
55#define UMOSCOM_IIR_THR 0x02
56#define UMOSCOM_IIR_MS 0x00
57
58/* registers */
59#define UMOSCOM_READ 0x0d
60#define UMOSCOM_WRITE 0x0e
61#define UMOSCOM_UART_REG 0x0300
62#define UMOSCOM_VEND_REG 0x0000
63
64#define UMOSCOM_TXBUF 0x00 /* Write */
65#define UMOSCOM_RXBUF 0x00 /* Read */
66#define UMOSCOM_INT 0x01
67#define UMOSCOM_FIFO 0x02 /* Write */
68#define UMOSCOM_ISR 0x02 /* Read */
69#define UMOSCOM_LCR 0x03
70#define UMOSCOM_MCR 0x04
71#define UMOSCOM_LSR 0x05
72#define UMOSCOM_MSR 0x06
73#define UMOSCOM_SCRATCH 0x07
74#define UMOSCOM_DIV_LO 0x08
75#define UMOSCOM_DIV_HI 0x09
76#define UMOSCOM_EFR 0x0a
77#define UMOSCOM_XON1 0x0b
78#define UMOSCOM_XON2 0x0c
79#define UMOSCOM_XOFF1 0x0d
80#define UMOSCOM_XOFF2 0x0e
81
82#define UMOSCOM_BAUDLO 0x00
83#define UMOSCOM_BAUDHI 0x01
84
85#define UMOSCOM_INT_RXEN 0x01
86#define UMOSCOM_INT_TXEN 0x02
87#define UMOSCOM_INT_RSEN 0x04
88#define UMOSCOM_INT_MDMEM 0x08
89#define UMOSCOM_INT_SLEEP 0x10
90#define UMOSCOM_INT_XOFF 0x20
91#define UMOSCOM_INT_RTS 0x40
92
93#define UMOSCOM_FIFO_EN 0x01
94#define UMOSCOM_FIFO_RXCLR 0x02
95#define UMOSCOM_FIFO_TXCLR 0x04
96#define UMOSCOM_FIFO_DMA_BLK 0x08
97#define UMOSCOM_FIFO_TXLVL_MASK 0x30
98#define UMOSCOM_FIFO_TXLVL_8 0x00
99#define UMOSCOM_FIFO_TXLVL_16 0x10
100#define UMOSCOM_FIFO_TXLVL_32 0x20
101#define UMOSCOM_FIFO_TXLVL_56 0x30
102#define UMOSCOM_FIFO_RXLVL_MASK 0xc0
103#define UMOSCOM_FIFO_RXLVL_8 0x00
104#define UMOSCOM_FIFO_RXLVL_16 0x40
105#define UMOSCOM_FIFO_RXLVL_56 0x80
106#define UMOSCOM_FIFO_RXLVL_80 0xc0
107
108#define UMOSCOM_ISR_MDM 0x00
109#define UMOSCOM_ISR_NONE 0x01
110#define UMOSCOM_ISR_TX 0x02
111#define UMOSCOM_ISR_RX 0x04
112#define UMOSCOM_ISR_LINE 0x06
113#define UMOSCOM_ISR_RXTIMEOUT 0x0c
114#define UMOSCOM_ISR_RX_XOFF 0x10
115#define UMOSCOM_ISR_RTSCTS 0x20
116#define UMOSCOM_ISR_FIFOEN 0xc0
117
118#define UMOSCOM_LCR_DBITS(x) ((x) - 5)
119#define UMOSCOM_LCR_STOP_BITS_1 0x00
120#define UMOSCOM_LCR_STOP_BITS_2 0x04 /* 2 if 6-8 bits/char or 1.5 if 5 */
121#define UMOSCOM_LCR_PARITY_NONE 0x00
122#define UMOSCOM_LCR_PARITY_ODD 0x08
123#define UMOSCOM_LCR_PARITY_EVEN 0x18
124#define UMOSCOM_LCR_BREAK 0x40
125#define UMOSCOM_LCR_DIVLATCH_EN 0x80
126
127#define UMOSCOM_MCR_DTR 0x01
128#define UMOSCOM_MCR_RTS 0x02
129#define UMOSCOM_MCR_LOOP 0x04
130#define UMOSCOM_MCR_INTEN 0x08
131#define UMOSCOM_MCR_LOOPBACK 0x10
132#define UMOSCOM_MCR_XONANY 0x20
133#define UMOSCOM_MCR_IRDA_EN 0x40
134#define UMOSCOM_MCR_BAUD_DIV4 0x80
135
136#define UMOSCOM_LSR_RXDATA 0x01
137#define UMOSCOM_LSR_RXOVER 0x02
138#define UMOSCOM_LSR_RXPAR_ERR 0x04
139#define UMOSCOM_LSR_RXFRM_ERR 0x08
140#define UMOSCOM_LSR_RXBREAK 0x10
141#define UMOSCOM_LSR_TXEMPTY 0x20
142#define UMOSCOM_LSR_TXALLEMPTY 0x40
143#define UMOSCOM_LSR_TXFIFO_ERR 0x80
144
145#define UMOSCOM_MSR_CTS_CHG 0x01
146#define UMOSCOM_MSR_DSR_CHG 0x02
147#define UMOSCOM_MSR_RI_CHG 0x04
148#define UMOSCOM_MSR_CD_CHG 0x08
149#define UMOSCOM_MSR_CTS 0x10
150#define UMOSCOM_MSR_RTS 0x20
151#define UMOSCOM_MSR_RI 0x40
152#define UMOSCOM_MSR_CD 0x80
153
154#define UMOSCOM_BAUD_REF 115200
155
156enum {
157 UMOSCOM_BULK_DT_WR,
158 UMOSCOM_BULK_DT_RD,
159 UMOSCOM_INTR_DT_RD,
160 UMOSCOM_N_TRANSFER,
161};
162
163struct umoscom_softc {
164 struct usb2_com_super_softc sc_super_ucom;
165 struct usb2_com_softc sc_ucom;
166
167 struct usb2_xfer *sc_xfer[UMOSCOM_N_TRANSFER];
168 struct usb2_device *sc_udev;
169 struct mtx sc_mtx;
170
171 uint8_t sc_mcr;
172 uint8_t sc_lcr;
173};
174
175/* prototypes */
176
177static device_probe_t umoscom_probe;
178static device_attach_t umoscom_attach;
179static device_detach_t umoscom_detach;
180
181static usb2_callback_t umoscom_write_callback;
182static usb2_callback_t umoscom_read_callback;
183static usb2_callback_t umoscom_intr_callback;
184
185static void umoscom_cfg_open(struct usb2_com_softc *);
186static void umoscom_cfg_close(struct usb2_com_softc *);
187static void umoscom_cfg_set_break(struct usb2_com_softc *, uint8_t);
188static void umoscom_cfg_set_dtr(struct usb2_com_softc *, uint8_t);
189static void umoscom_cfg_set_rts(struct usb2_com_softc *, uint8_t);
190static int umoscom_pre_param(struct usb2_com_softc *, struct termios *);
191static void umoscom_cfg_param(struct usb2_com_softc *, struct termios *);
192static void umoscom_cfg_get_status(struct usb2_com_softc *, uint8_t *,
193 uint8_t *);
194static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t);
195static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t);
196static void umoscom_start_read(struct usb2_com_softc *);
197static void umoscom_stop_read(struct usb2_com_softc *);
198static void umoscom_start_write(struct usb2_com_softc *);
199static void umoscom_stop_write(struct usb2_com_softc *);
200
201static const struct usb2_config umoscom_config_data[UMOSCOM_N_TRANSFER] = {
202
203 [UMOSCOM_BULK_DT_WR] = {
204 .type = UE_BULK,
205 .endpoint = UE_ADDR_ANY,
206 .direction = UE_DIR_OUT,
207 .bufsize = UMOSCOM_BUFSIZE,
208 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
209 .callback = &umoscom_write_callback,
210 },
211
212 [UMOSCOM_BULK_DT_RD] = {
213 .type = UE_BULK,
214 .endpoint = UE_ADDR_ANY,
215 .direction = UE_DIR_IN,
216 .bufsize = UMOSCOM_BUFSIZE,
217 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
218 .callback = &umoscom_read_callback,
219 },
220
221 [UMOSCOM_INTR_DT_RD] = {
222 .type = UE_INTERRUPT,
223 .endpoint = UE_ADDR_ANY,
224 .direction = UE_DIR_IN,
225 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
226 .bufsize = 0, /* use wMaxPacketSize */
227 .callback = &umoscom_intr_callback,
228 },
229};
230
231static const struct usb2_com_callback umoscom_callback = {
232 /* configuration callbacks */
233 .usb2_com_cfg_get_status = &umoscom_cfg_get_status,
234 .usb2_com_cfg_set_dtr = &umoscom_cfg_set_dtr,
235 .usb2_com_cfg_set_rts = &umoscom_cfg_set_rts,
236 .usb2_com_cfg_set_break = &umoscom_cfg_set_break,
237 .usb2_com_cfg_param = &umoscom_cfg_param,
238 .usb2_com_cfg_open = &umoscom_cfg_open,
239 .usb2_com_cfg_close = &umoscom_cfg_close,
240
241 /* other callbacks */
242 .usb2_com_pre_param = &umoscom_pre_param,
243 .usb2_com_start_read = &umoscom_start_read,
244 .usb2_com_stop_read = &umoscom_stop_read,
245 .usb2_com_start_write = &umoscom_start_write,
246 .usb2_com_stop_write = &umoscom_stop_write,
247};
248
249static device_method_t umoscom_methods[] = {
250 DEVMETHOD(device_probe, umoscom_probe),
251 DEVMETHOD(device_attach, umoscom_attach),
252 DEVMETHOD(device_detach, umoscom_detach),
253 {0, 0}
254};
255
256static devclass_t umoscom_devclass;
257
258static driver_t umoscom_driver = {
259 .name = "umoscom",
260 .methods = umoscom_methods,
261 .size = sizeof(struct umoscom_softc),
262};
263
264DRIVER_MODULE(umoscom, uhub, umoscom_driver, umoscom_devclass, NULL, 0);
265MODULE_DEPEND(umoscom, ucom, 1, 1, 1);
266MODULE_DEPEND(umoscom, usb, 1, 1, 1);
267
268static const struct usb2_device_id umoscom_devs[] = {
269 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)}
270};
271
272static int
273umoscom_probe(device_t dev)
274{
275 struct usb2_attach_arg *uaa = device_get_ivars(dev);
276
277 if (uaa->usb_mode != USB_MODE_HOST) {
278 return (ENXIO);
279 }
280 if (uaa->info.bConfigIndex != UMOSCOM_CONFIG_INDEX) {
281 return (ENXIO);
282 }
283 if (uaa->info.bIfaceIndex != UMOSCOM_IFACE_INDEX) {
284 return (ENXIO);
285 }
286 return (usb2_lookup_id_by_uaa(umoscom_devs, sizeof(umoscom_devs), uaa));
287}
288
289static int
290umoscom_attach(device_t dev)
291{
292 struct usb2_attach_arg *uaa = device_get_ivars(dev);
293 struct umoscom_softc *sc = device_get_softc(dev);
294 int error;
295 uint8_t iface_index;
296
297 sc->sc_udev = uaa->device;
298 sc->sc_mcr = 0x08; /* enable interrupts */
299
300 /* XXX the device doesn't provide any ID string, so set a static one */
301 device_set_desc(dev, "MOSCHIP USB Serial Port Adapter");
302 device_printf(dev, "<MOSCHIP USB Serial Port Adapter>\n");
303
304 mtx_init(&sc->sc_mtx, "umoscom", NULL, MTX_DEF);
305
306 iface_index = UMOSCOM_IFACE_INDEX;
307 error = usb2_transfer_setup(uaa->device, &iface_index,
308 sc->sc_xfer, umoscom_config_data,
309 UMOSCOM_N_TRANSFER, sc, &sc->sc_mtx);
310
311 if (error) {
312 goto detach;
313 }
314 /* clear stall at first run */
315 mtx_lock(&sc->sc_mtx);
316 usb2_transfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
317 usb2_transfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
318 mtx_unlock(&sc->sc_mtx);
319
320 error = usb2_com_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
321 &umoscom_callback, &sc->sc_mtx);
322 if (error) {
323 goto detach;
324 }
325 return (0);
326
327detach:
328 device_printf(dev, "attach error: %s\n", usb2_errstr(error));
329 umoscom_detach(dev);
330 return (ENXIO);
331}
332
333static int
334umoscom_detach(device_t dev)
335{
336 struct umoscom_softc *sc = device_get_softc(dev);
337
338 usb2_com_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1);
339 usb2_transfer_unsetup(sc->sc_xfer, UMOSCOM_N_TRANSFER);
340 mtx_destroy(&sc->sc_mtx);
341
342 return (0);
343}
344
345static void
346umoscom_cfg_open(struct usb2_com_softc *ucom)
347{
348 struct umoscom_softc *sc = ucom->sc_parent;
349
350 DPRINTF("\n");
351
352 /* Purge FIFOs or odd things happen */
353 umoscom_cfg_write(sc, UMOSCOM_FIFO, 0x00 | UMOSCOM_UART_REG);
354
355 /* Enable FIFO */
356 umoscom_cfg_write(sc, UMOSCOM_FIFO, UMOSCOM_FIFO_EN |
357 UMOSCOM_FIFO_RXCLR | UMOSCOM_FIFO_TXCLR |
358 UMOSCOM_FIFO_DMA_BLK | UMOSCOM_FIFO_RXLVL_MASK |
359 UMOSCOM_UART_REG);
360
361 /* Enable Interrupt Registers */
362 umoscom_cfg_write(sc, UMOSCOM_INT, 0x0C | UMOSCOM_UART_REG);
363
364 /* Magic */
365 umoscom_cfg_write(sc, 0x01, 0x08);
366
367 /* Magic */
368 umoscom_cfg_write(sc, 0x00, 0x02);
369}
370
371static void
372umoscom_cfg_close(struct usb2_com_softc *ucom)
373{
374 return;
375}
376
377static void
378umoscom_cfg_set_break(struct usb2_com_softc *ucom, uint8_t onoff)
379{
380 struct umoscom_softc *sc = ucom->sc_parent;
381 uint16_t val;
382
383 val = sc->sc_lcr;
384 if (onoff)
385 val |= UMOSCOM_LCR_BREAK;
386
387 umoscom_cfg_write(sc, UMOSCOM_LCR, val | UMOSCOM_UART_REG);
388}
389
390static void
391umoscom_cfg_set_dtr(struct usb2_com_softc *ucom, uint8_t onoff)
392{
393 struct umoscom_softc *sc = ucom->sc_parent;
394
395 if (onoff)
396 sc->sc_mcr |= UMOSCOM_MCR_DTR;
397 else
398 sc->sc_mcr &= ~UMOSCOM_MCR_DTR;
399
400 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG);
401}
402
403static void
404umoscom_cfg_set_rts(struct usb2_com_softc *ucom, uint8_t onoff)
405{
406 struct umoscom_softc *sc = ucom->sc_parent;
407
408 if (onoff)
409 sc->sc_mcr |= UMOSCOM_MCR_RTS;
410 else
411 sc->sc_mcr &= ~UMOSCOM_MCR_RTS;
412
413 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG);
414}
415
416static int
417umoscom_pre_param(struct usb2_com_softc *ucom, struct termios *t)
418{
419 if ((t->c_ospeed <= 1) || (t->c_ospeed > 115200))
420 return (EINVAL);
421
422 return (0);
423}
424
425static void
426umoscom_cfg_param(struct usb2_com_softc *ucom, struct termios *t)
427{
428 struct umoscom_softc *sc = ucom->sc_parent;
429 uint16_t data;
430
431 DPRINTF("speed=%d\n", t->c_ospeed);
432
433 data = ((uint32_t)UMOSCOM_BAUD_REF) / ((uint32_t)t->c_ospeed);
434
435 if (data == 0) {
436 DPRINTF("invalid baud rate!\n");
437 return;
438 }
439 umoscom_cfg_write(sc, UMOSCOM_LCR,
440 UMOSCOM_LCR_DIVLATCH_EN | UMOSCOM_UART_REG);
441
442 umoscom_cfg_write(sc, UMOSCOM_BAUDLO,
443 (data & 0xFF) | UMOSCOM_UART_REG);
444
445 umoscom_cfg_write(sc, UMOSCOM_BAUDHI,
446 ((data >> 8) & 0xFF) | UMOSCOM_UART_REG);
447
448 if (t->c_cflag & CSTOPB)
449 data = UMOSCOM_LCR_STOP_BITS_2;
450 else
451 data = UMOSCOM_LCR_STOP_BITS_1;
452
453 if (t->c_cflag & PARENB) {
454 if (t->c_cflag & PARODD)
455 data |= UMOSCOM_LCR_PARITY_ODD;
456 else
457 data |= UMOSCOM_LCR_PARITY_EVEN;
458 } else
459 data |= UMOSCOM_LCR_PARITY_NONE;
460
461 switch (t->c_cflag & CSIZE) {
462 case CS5:
463 data |= UMOSCOM_LCR_DBITS(5);
464 break;
465 case CS6:
466 data |= UMOSCOM_LCR_DBITS(6);
467 break;
468 case CS7:
469 data |= UMOSCOM_LCR_DBITS(7);
470 break;
471 case CS8:
472 data |= UMOSCOM_LCR_DBITS(8);
473 break;
474 }
475
476 sc->sc_lcr = data;
477 umoscom_cfg_write(sc, UMOSCOM_LCR, data | UMOSCOM_UART_REG);
478}
479
480static void
481umoscom_cfg_get_status(struct usb2_com_softc *ucom, uint8_t *p_lsr, uint8_t *p_msr)
482{
483 struct umoscom_softc *sc = ucom->sc_parent;
484 uint8_t lsr;
485 uint8_t msr;
486
487 DPRINTFN(5, "\n");
488
489 /* read status registers */
490
491 lsr = umoscom_cfg_read(sc, UMOSCOM_LSR);
492 msr = umoscom_cfg_read(sc, UMOSCOM_MSR);
493
494 /* translate bits */
495
496 if (msr & UMOSCOM_MSR_CTS)
497 *p_msr |= SER_CTS;
498
499 if (msr & UMOSCOM_MSR_CD)
500 *p_msr |= SER_DCD;
501
502 if (msr & UMOSCOM_MSR_RI)
503 *p_msr |= SER_RI;
504
505 if (msr & UMOSCOM_MSR_RTS)
506 *p_msr |= SER_DSR;
507}
508
509static void
510umoscom_cfg_write(struct umoscom_softc *sc, uint16_t reg, uint16_t val)
511{
512 struct usb2_device_request req;
513
514 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
515 req.bRequest = UMOSCOM_WRITE;
516 USETW(req.wValue, val);
517 USETW(req.wIndex, reg);
518 USETW(req.wLength, 0);
519
520 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
521 &req, NULL, 0, 1000);
522}
523
524static uint8_t
525umoscom_cfg_read(struct umoscom_softc *sc, uint16_t reg)
526{
527 struct usb2_device_request req;
528 uint8_t val;
529
530 req.bmRequestType = UT_READ_VENDOR_DEVICE;
531 req.bRequest = UMOSCOM_READ;
532 USETW(req.wValue, 0);
533 USETW(req.wIndex, reg);
534 USETW(req.wLength, 1);
535
536 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
537 &req, &val, 0, 1000);
538
539 DPRINTF("reg=0x%04x, val=0x%02x\n", reg, val);
540
541 return (val);
542}
543
544static void
545umoscom_start_read(struct usb2_com_softc *ucom)
546{
547 struct umoscom_softc *sc = ucom->sc_parent;
548
549#if 0
550 /* start interrupt endpoint */
551 usb2_transfer_start(sc->sc_xfer[UMOSCOM_INTR_DT_RD]);
552#endif
553 /* start read endpoint */
554 usb2_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
555}
556
557static void
558umoscom_stop_read(struct usb2_com_softc *ucom)
559{
560 struct umoscom_softc *sc = ucom->sc_parent;
561
562 /* stop interrupt transfer */
563 usb2_transfer_stop(sc->sc_xfer[UMOSCOM_INTR_DT_RD]);
564
565 /* stop read endpoint */
566 usb2_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
567}
568
569static void
570umoscom_start_write(struct usb2_com_softc *ucom)
571{
572 struct umoscom_softc *sc = ucom->sc_parent;
573
574 usb2_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
575}
576
577static void
578umoscom_stop_write(struct usb2_com_softc *ucom)
579{
580 struct umoscom_softc *sc = ucom->sc_parent;
581
582 usb2_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
583}
584
585static void
586umoscom_write_callback(struct usb2_xfer *xfer)
587{
588 struct umoscom_softc *sc = xfer->priv_sc;
589 uint32_t actlen;
590
591 switch (USB_GET_STATE(xfer)) {
592 case USB_ST_SETUP:
593 case USB_ST_TRANSFERRED:
594tr_setup:
595 DPRINTF("\n");
596
597 if (usb2_com_get_data(&sc->sc_ucom, xfer->frbuffers, 0,
598 UMOSCOM_BUFSIZE, &actlen)) {
599
600 xfer->frlengths[0] = actlen;
601 usb2_start_hardware(xfer);
602 }
603 return;
604
605 default: /* Error */
606 if (xfer->error != USB_ERR_CANCELLED) {
607 DPRINTFN(0, "transfer failed\n");
608 /* try to clear stall first */
609 xfer->flags.stall_pipe = 1;
610 goto tr_setup;
611 }
612 return;
613 }
614}
615
616static void
617umoscom_read_callback(struct usb2_xfer *xfer)
618{
619 struct umoscom_softc *sc = xfer->priv_sc;
620
621 switch (USB_GET_STATE(xfer)) {
622 case USB_ST_TRANSFERRED:
623 DPRINTF("got %d bytes\n", xfer->actlen);
624 usb2_com_put_data(&sc->sc_ucom, xfer->frbuffers, 0, xfer->actlen);
625
626 case USB_ST_SETUP:
627tr_setup:
628 DPRINTF("\n");
629
630 xfer->frlengths[0] = xfer->max_data_length;
631 usb2_start_hardware(xfer);
632 return;
633
634 default: /* Error */
635 if (xfer->error != USB_ERR_CANCELLED) {
636 DPRINTFN(0, "transfer failed\n");
637 /* try to clear stall first */
638 xfer->flags.stall_pipe = 1;
639 goto tr_setup;
640 }
641 return;
642 }
643}
644
645static void
646umoscom_intr_callback(struct usb2_xfer *xfer)
647{
648 struct umoscom_softc *sc = xfer->priv_sc;
649
650 switch (USB_GET_STATE(xfer)) {
651 case USB_ST_TRANSFERRED:
652 if (xfer->actlen < 2) {
653 DPRINTF("too short message\n");
654 goto tr_setup;
655 }
656 usb2_com_status_change(&sc->sc_ucom);
657
658 case USB_ST_SETUP:
659tr_setup:
660 xfer->frlengths[0] = xfer->max_data_length;
661 usb2_start_hardware(xfer);
662 return;
663
664 default: /* Error */
665 if (xfer->error != USB_ERR_CANCELLED) {
666 DPRINTFN(0, "transfer failed\n");
667 /* try to clear stall first */
668 xfer->flags.stall_pipe = 1;
669 goto tr_setup;
670 }
671 return;
672 }
673}