1 /* $OpenBSD: umoscom.c,v 1.2 2006/10/26 06:02:43 jsg Exp $ */
2
3 /*
4 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/stdint.h>
20 #include <sys/stddef.h>
21 #include <sys/param.h>
22 #include <sys/queue.h>
23 #include <sys/types.h>
24 #include <sys/systm.h>
25 #include <sys/kernel.h>
26 #include <sys/bus.h>
27 #include <sys/module.h>
28 #include <sys/lock.h>
29 #include <sys/mutex.h>
30 #include <sys/condvar.h>
31 #include <sys/sysctl.h>
32 #include <sys/sx.h>
33 #include <sys/unistd.h>
34 #include <sys/callout.h>
35 #include <sys/malloc.h>
36 #include <sys/priv.h>
37
38 #include <dev/usb/usb.h>
39 #include <dev/usb/usbdi.h>
40 #include <dev/usb/usbdi_util.h>
41 #include "usbdevs.h"
42
43 #define USB_DEBUG_VAR umoscom_debug
44 #include <dev/usb/usb_debug.h>
45 #include <dev/usb/usb_process.h>
46
47 #include <dev/usb/serial/usb_serial.h>
48
49 #ifdef USB_DEBUG
50 static int umoscom_debug = 0;
51
52 static SYSCTL_NODE(_hw_usb, OID_AUTO, umoscom, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
53 "USB umoscom");
54 SYSCTL_INT(_hw_usb_umoscom, OID_AUTO, debug, CTLFLAG_RWTUN,
55 &umoscom_debug, 0, "Debug level");
56 #endif
57
58 #define UMOSCOM_BUFSIZE 1024 /* bytes */
59
60 #define UMOSCOM_CONFIG_INDEX 0
61 #define UMOSCOM_IFACE_INDEX 0
62
63 /* interrupt packet */
64 #define UMOSCOM_IIR_RLS 0x06
65 #define UMOSCOM_IIR_RDA 0x04
66 #define UMOSCOM_IIR_CTI 0x0c
67 #define UMOSCOM_IIR_THR 0x02
68 #define UMOSCOM_IIR_MS 0x00
69
70 /* registers */
71 #define UMOSCOM_READ 0x0d
72 #define UMOSCOM_WRITE 0x0e
73 #define UMOSCOM_UART_REG 0x0300
74 #define UMOSCOM_VEND_REG 0x0000
75
76 #define UMOSCOM_TXBUF 0x00 /* Write */
77 #define UMOSCOM_RXBUF 0x00 /* Read */
78 #define UMOSCOM_INT 0x01
79 #define UMOSCOM_FIFO 0x02 /* Write */
80 #define UMOSCOM_ISR 0x02 /* Read */
81 #define UMOSCOM_LCR 0x03
82 #define UMOSCOM_MCR 0x04
83 #define UMOSCOM_LSR 0x05
84 #define UMOSCOM_MSR 0x06
85 #define UMOSCOM_SCRATCH 0x07
86 #define UMOSCOM_DIV_LO 0x08
87 #define UMOSCOM_DIV_HI 0x09
88 #define UMOSCOM_EFR 0x0a
89 #define UMOSCOM_XON1 0x0b
90 #define UMOSCOM_XON2 0x0c
91 #define UMOSCOM_XOFF1 0x0d
92 #define UMOSCOM_XOFF2 0x0e
93
94 #define UMOSCOM_BAUDLO 0x00
95 #define UMOSCOM_BAUDHI 0x01
96
97 #define UMOSCOM_INT_RXEN 0x01
98 #define UMOSCOM_INT_TXEN 0x02
99 #define UMOSCOM_INT_RSEN 0x04
100 #define UMOSCOM_INT_MDMEM 0x08
101 #define UMOSCOM_INT_SLEEP 0x10
102 #define UMOSCOM_INT_XOFF 0x20
103 #define UMOSCOM_INT_RTS 0x40
104
105 #define UMOSCOM_FIFO_EN 0x01
106 #define UMOSCOM_FIFO_RXCLR 0x02
107 #define UMOSCOM_FIFO_TXCLR 0x04
108 #define UMOSCOM_FIFO_DMA_BLK 0x08
109 #define UMOSCOM_FIFO_TXLVL_MASK 0x30
110 #define UMOSCOM_FIFO_TXLVL_8 0x00
111 #define UMOSCOM_FIFO_TXLVL_16 0x10
112 #define UMOSCOM_FIFO_TXLVL_32 0x20
113 #define UMOSCOM_FIFO_TXLVL_56 0x30
114 #define UMOSCOM_FIFO_RXLVL_MASK 0xc0
115 #define UMOSCOM_FIFO_RXLVL_8 0x00
116 #define UMOSCOM_FIFO_RXLVL_16 0x40
117 #define UMOSCOM_FIFO_RXLVL_56 0x80
118 #define UMOSCOM_FIFO_RXLVL_80 0xc0
119
120 #define UMOSCOM_ISR_MDM 0x00
121 #define UMOSCOM_ISR_NONE 0x01
122 #define UMOSCOM_ISR_TX 0x02
123 #define UMOSCOM_ISR_RX 0x04
124 #define UMOSCOM_ISR_LINE 0x06
125 #define UMOSCOM_ISR_RXTIMEOUT 0x0c
126 #define UMOSCOM_ISR_RX_XOFF 0x10
127 #define UMOSCOM_ISR_RTSCTS 0x20
128 #define UMOSCOM_ISR_FIFOEN 0xc0
129
130 #define UMOSCOM_LCR_DBITS(x) ((x) - 5)
131 #define UMOSCOM_LCR_STOP_BITS_1 0x00
132 #define UMOSCOM_LCR_STOP_BITS_2 0x04 /* 2 if 6-8 bits/char or 1.5 if 5 */
133 #define UMOSCOM_LCR_PARITY_NONE 0x00
134 #define UMOSCOM_LCR_PARITY_ODD 0x08
135 #define UMOSCOM_LCR_PARITY_EVEN 0x18
136 #define UMOSCOM_LCR_BREAK 0x40
137 #define UMOSCOM_LCR_DIVLATCH_EN 0x80
138
139 #define UMOSCOM_MCR_DTR 0x01
140 #define UMOSCOM_MCR_RTS 0x02
141 #define UMOSCOM_MCR_LOOP 0x04
142 #define UMOSCOM_MCR_INTEN 0x08
143 #define UMOSCOM_MCR_LOOPBACK 0x10
144 #define UMOSCOM_MCR_XONANY 0x20
145 #define UMOSCOM_MCR_IRDA_EN 0x40
146 #define UMOSCOM_MCR_BAUD_DIV4 0x80
147
148 #define UMOSCOM_LSR_RXDATA 0x01
149 #define UMOSCOM_LSR_RXOVER 0x02
150 #define UMOSCOM_LSR_RXPAR_ERR 0x04
151 #define UMOSCOM_LSR_RXFRM_ERR 0x08
152 #define UMOSCOM_LSR_RXBREAK 0x10
153 #define UMOSCOM_LSR_TXEMPTY 0x20
154 #define UMOSCOM_LSR_TXALLEMPTY 0x40
155 #define UMOSCOM_LSR_TXFIFO_ERR 0x80
156
157 #define UMOSCOM_MSR_CTS_CHG 0x01
158 #define UMOSCOM_MSR_DSR_CHG 0x02
159 #define UMOSCOM_MSR_RI_CHG 0x04
160 #define UMOSCOM_MSR_CD_CHG 0x08
161 #define UMOSCOM_MSR_CTS 0x10
162 #define UMOSCOM_MSR_RTS 0x20
163 #define UMOSCOM_MSR_RI 0x40
164 #define UMOSCOM_MSR_CD 0x80
165
166 #define UMOSCOM_BAUD_REF 115200
167
168 enum {
169 UMOSCOM_BULK_DT_WR,
170 UMOSCOM_BULK_DT_RD,
171 UMOSCOM_INTR_DT_RD,
172 UMOSCOM_N_TRANSFER,
173 };
174
175 struct umoscom_softc {
176 struct ucom_super_softc sc_super_ucom;
177 struct ucom_softc sc_ucom;
178
179 struct usb_xfer *sc_xfer[UMOSCOM_N_TRANSFER];
180 struct usb_device *sc_udev;
181 struct mtx sc_mtx;
182
183 uint8_t sc_mcr;
184 uint8_t sc_lcr;
185 };
186
187 /* prototypes */
188
189 static device_probe_t umoscom_probe;
190 static device_attach_t umoscom_attach;
191 static device_detach_t umoscom_detach;
192 static void umoscom_free_softc(struct umoscom_softc *);
193
194 static usb_callback_t umoscom_write_callback;
195 static usb_callback_t umoscom_read_callback;
196 static usb_callback_t umoscom_intr_callback;
197
198 static void umoscom_free(struct ucom_softc *);
199 static void umoscom_cfg_open(struct ucom_softc *);
200 static void umoscom_cfg_close(struct ucom_softc *);
201 static void umoscom_cfg_set_break(struct ucom_softc *, uint8_t);
202 static void umoscom_cfg_set_dtr(struct ucom_softc *, uint8_t);
203 static void umoscom_cfg_set_rts(struct ucom_softc *, uint8_t);
204 static int umoscom_pre_param(struct ucom_softc *, struct termios *);
205 static void umoscom_cfg_param(struct ucom_softc *, struct termios *);
206 static void umoscom_cfg_get_status(struct ucom_softc *, uint8_t *,
207 uint8_t *);
208 static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t);
209 static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t);
210 static void umoscom_start_read(struct ucom_softc *);
211 static void umoscom_stop_read(struct ucom_softc *);
212 static void umoscom_start_write(struct ucom_softc *);
213 static void umoscom_stop_write(struct ucom_softc *);
214 static void umoscom_poll(struct ucom_softc *ucom);
215
216 static const struct usb_config umoscom_config_data[UMOSCOM_N_TRANSFER] = {
217 [UMOSCOM_BULK_DT_WR] = {
218 .type = UE_BULK,
219 .endpoint = UE_ADDR_ANY,
220 .direction = UE_DIR_OUT,
221 .bufsize = UMOSCOM_BUFSIZE,
222 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
223 .callback = &umoscom_write_callback,
224 },
225
226 [UMOSCOM_BULK_DT_RD] = {
227 .type = UE_BULK,
228 .endpoint = UE_ADDR_ANY,
229 .direction = UE_DIR_IN,
230 .bufsize = UMOSCOM_BUFSIZE,
231 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
232 .callback = &umoscom_read_callback,
233 },
234
235 [UMOSCOM_INTR_DT_RD] = {
236 .type = UE_INTERRUPT,
237 .endpoint = UE_ADDR_ANY,
238 .direction = UE_DIR_IN,
239 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
240 .bufsize = 0, /* use wMaxPacketSize */
241 .callback = &umoscom_intr_callback,
242 },
243 };
244
245 static const struct ucom_callback umoscom_callback = {
246 /* configuration callbacks */
247 .ucom_cfg_get_status = &umoscom_cfg_get_status,
248 .ucom_cfg_set_dtr = &umoscom_cfg_set_dtr,
249 .ucom_cfg_set_rts = &umoscom_cfg_set_rts,
250 .ucom_cfg_set_break = &umoscom_cfg_set_break,
251 .ucom_cfg_param = &umoscom_cfg_param,
252 .ucom_cfg_open = &umoscom_cfg_open,
253 .ucom_cfg_close = &umoscom_cfg_close,
254
255 /* other callbacks */
256 .ucom_pre_param = &umoscom_pre_param,
257 .ucom_start_read = &umoscom_start_read,
258 .ucom_stop_read = &umoscom_stop_read,
259 .ucom_start_write = &umoscom_start_write,
260 .ucom_stop_write = &umoscom_stop_write,
261 .ucom_poll = &umoscom_poll,
262 .ucom_free = &umoscom_free,
263 };
264
265 static device_method_t umoscom_methods[] = {
266 DEVMETHOD(device_probe, umoscom_probe),
267 DEVMETHOD(device_attach, umoscom_attach),
268 DEVMETHOD(device_detach, umoscom_detach),
269 DEVMETHOD_END
270 };
271
272 static driver_t umoscom_driver = {
273 .name = "umoscom",
274 .methods = umoscom_methods,
275 .size = sizeof(struct umoscom_softc),
276 };
277
278 static const STRUCT_USB_HOST_ID umoscom_devs[] = {
279 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)}
280 };
281
282 DRIVER_MODULE(umoscom, uhub, umoscom_driver, NULL, NULL);
283 MODULE_DEPEND(umoscom, ucom, 1, 1, 1);
284 MODULE_DEPEND(umoscom, usb, 1, 1, 1);
285 MODULE_VERSION(umoscom, 1);
286 USB_PNP_HOST_INFO(umoscom_devs);
287
288 static int
umoscom_probe(device_t dev)289 umoscom_probe(device_t dev)
290 {
291 struct usb_attach_arg *uaa = device_get_ivars(dev);
292
293 if (uaa->usb_mode != USB_MODE_HOST) {
294 return (ENXIO);
295 }
296 if (uaa->info.bConfigIndex != UMOSCOM_CONFIG_INDEX) {
297 return (ENXIO);
298 }
299 if (uaa->info.bIfaceIndex != UMOSCOM_IFACE_INDEX) {
300 return (ENXIO);
301 }
302 return (usbd_lookup_id_by_uaa(umoscom_devs, sizeof(umoscom_devs), uaa));
303 }
304
305 static int
umoscom_attach(device_t dev)306 umoscom_attach(device_t dev)
307 {
308 struct usb_attach_arg *uaa = device_get_ivars(dev);
309 struct umoscom_softc *sc = device_get_softc(dev);
310 int error;
311 uint8_t iface_index;
312
313 sc->sc_udev = uaa->device;
314 sc->sc_mcr = 0x08; /* enable interrupts */
315
316 /* XXX the device doesn't provide any ID string, so set a static one */
317 device_set_desc(dev, "MOSCHIP USB Serial Port Adapter");
318 device_printf(dev, "<MOSCHIP USB Serial Port Adapter>\n");
319
320 mtx_init(&sc->sc_mtx, "umoscom", NULL, MTX_DEF);
321 ucom_ref(&sc->sc_super_ucom);
322
323 iface_index = UMOSCOM_IFACE_INDEX;
324 error = usbd_transfer_setup(uaa->device, &iface_index,
325 sc->sc_xfer, umoscom_config_data,
326 UMOSCOM_N_TRANSFER, sc, &sc->sc_mtx);
327
328 if (error) {
329 goto detach;
330 }
331 /* clear stall at first run */
332 mtx_lock(&sc->sc_mtx);
333 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
334 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
335 mtx_unlock(&sc->sc_mtx);
336
337 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
338 &umoscom_callback, &sc->sc_mtx);
339 if (error) {
340 goto detach;
341 }
342 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
343
344 return (0);
345
346 detach:
347 device_printf(dev, "attach error: %s\n", usbd_errstr(error));
348 umoscom_detach(dev);
349 return (ENXIO);
350 }
351
352 static int
umoscom_detach(device_t dev)353 umoscom_detach(device_t dev)
354 {
355 struct umoscom_softc *sc = device_get_softc(dev);
356
357 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
358 usbd_transfer_unsetup(sc->sc_xfer, UMOSCOM_N_TRANSFER);
359
360 device_claim_softc(dev);
361
362 umoscom_free_softc(sc);
363
364 return (0);
365 }
366
367 UCOM_UNLOAD_DRAIN(umoscom);
368
369 static void
umoscom_free_softc(struct umoscom_softc * sc)370 umoscom_free_softc(struct umoscom_softc *sc)
371 {
372 if (ucom_unref(&sc->sc_super_ucom)) {
373 mtx_destroy(&sc->sc_mtx);
374 device_free_softc(sc);
375 }
376 }
377
378 static void
umoscom_free(struct ucom_softc * ucom)379 umoscom_free(struct ucom_softc *ucom)
380 {
381 umoscom_free_softc(ucom->sc_parent);
382 }
383
384 static void
umoscom_cfg_open(struct ucom_softc * ucom)385 umoscom_cfg_open(struct ucom_softc *ucom)
386 {
387 struct umoscom_softc *sc = ucom->sc_parent;
388
389 DPRINTF("\n");
390
391 /* Purge FIFOs or odd things happen */
392 umoscom_cfg_write(sc, UMOSCOM_FIFO, 0x00 | UMOSCOM_UART_REG);
393
394 /* Enable FIFO */
395 umoscom_cfg_write(sc, UMOSCOM_FIFO, UMOSCOM_FIFO_EN |
396 UMOSCOM_FIFO_RXCLR | UMOSCOM_FIFO_TXCLR |
397 UMOSCOM_FIFO_DMA_BLK | UMOSCOM_FIFO_RXLVL_MASK |
398 UMOSCOM_UART_REG);
399
400 /* Enable Interrupt Registers */
401 umoscom_cfg_write(sc, UMOSCOM_INT, 0x0C | UMOSCOM_UART_REG);
402
403 /* Magic */
404 umoscom_cfg_write(sc, 0x01, 0x08);
405
406 /* Magic */
407 umoscom_cfg_write(sc, 0x00, 0x02);
408 }
409
410 static void
umoscom_cfg_close(struct ucom_softc * ucom)411 umoscom_cfg_close(struct ucom_softc *ucom)
412 {
413 return;
414 }
415
416 static void
umoscom_cfg_set_break(struct ucom_softc * ucom,uint8_t onoff)417 umoscom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
418 {
419 struct umoscom_softc *sc = ucom->sc_parent;
420 uint16_t val;
421
422 val = sc->sc_lcr;
423 if (onoff)
424 val |= UMOSCOM_LCR_BREAK;
425
426 umoscom_cfg_write(sc, UMOSCOM_LCR, val | UMOSCOM_UART_REG);
427 }
428
429 static void
umoscom_cfg_set_dtr(struct ucom_softc * ucom,uint8_t onoff)430 umoscom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
431 {
432 struct umoscom_softc *sc = ucom->sc_parent;
433
434 if (onoff)
435 sc->sc_mcr |= UMOSCOM_MCR_DTR;
436 else
437 sc->sc_mcr &= ~UMOSCOM_MCR_DTR;
438
439 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG);
440 }
441
442 static void
umoscom_cfg_set_rts(struct ucom_softc * ucom,uint8_t onoff)443 umoscom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
444 {
445 struct umoscom_softc *sc = ucom->sc_parent;
446
447 if (onoff)
448 sc->sc_mcr |= UMOSCOM_MCR_RTS;
449 else
450 sc->sc_mcr &= ~UMOSCOM_MCR_RTS;
451
452 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG);
453 }
454
455 static int
umoscom_pre_param(struct ucom_softc * ucom,struct termios * t)456 umoscom_pre_param(struct ucom_softc *ucom, struct termios *t)
457 {
458 if ((t->c_ospeed <= 1) || (t->c_ospeed > 115200))
459 return (EINVAL);
460
461 return (0);
462 }
463
464 static void
umoscom_cfg_param(struct ucom_softc * ucom,struct termios * t)465 umoscom_cfg_param(struct ucom_softc *ucom, struct termios *t)
466 {
467 struct umoscom_softc *sc = ucom->sc_parent;
468 uint16_t data;
469
470 DPRINTF("speed=%d\n", t->c_ospeed);
471
472 data = ((uint32_t)UMOSCOM_BAUD_REF) / ((uint32_t)t->c_ospeed);
473
474 if (data == 0) {
475 DPRINTF("invalid baud rate!\n");
476 return;
477 }
478 umoscom_cfg_write(sc, UMOSCOM_LCR,
479 UMOSCOM_LCR_DIVLATCH_EN | UMOSCOM_UART_REG);
480
481 umoscom_cfg_write(sc, UMOSCOM_BAUDLO,
482 (data & 0xFF) | UMOSCOM_UART_REG);
483
484 umoscom_cfg_write(sc, UMOSCOM_BAUDHI,
485 ((data >> 8) & 0xFF) | UMOSCOM_UART_REG);
486
487 if (t->c_cflag & CSTOPB)
488 data = UMOSCOM_LCR_STOP_BITS_2;
489 else
490 data = UMOSCOM_LCR_STOP_BITS_1;
491
492 if (t->c_cflag & PARENB) {
493 if (t->c_cflag & PARODD)
494 data |= UMOSCOM_LCR_PARITY_ODD;
495 else
496 data |= UMOSCOM_LCR_PARITY_EVEN;
497 } else
498 data |= UMOSCOM_LCR_PARITY_NONE;
499
500 switch (t->c_cflag & CSIZE) {
501 case CS5:
502 data |= UMOSCOM_LCR_DBITS(5);
503 break;
504 case CS6:
505 data |= UMOSCOM_LCR_DBITS(6);
506 break;
507 case CS7:
508 data |= UMOSCOM_LCR_DBITS(7);
509 break;
510 case CS8:
511 data |= UMOSCOM_LCR_DBITS(8);
512 break;
513 }
514
515 sc->sc_lcr = data;
516 umoscom_cfg_write(sc, UMOSCOM_LCR, data | UMOSCOM_UART_REG);
517 }
518
519 static void
umoscom_cfg_get_status(struct ucom_softc * ucom,uint8_t * p_lsr,uint8_t * p_msr)520 umoscom_cfg_get_status(struct ucom_softc *ucom, uint8_t *p_lsr, uint8_t *p_msr)
521 {
522 struct umoscom_softc *sc = ucom->sc_parent;
523 uint8_t msr;
524
525 DPRINTFN(5, "\n");
526
527 /*
528 * Read status registers. MSR bits need translation from ns16550 to
529 * SER_* values. LSR bits are ns16550 in hardware and ucom.
530 */
531
532 *p_lsr = umoscom_cfg_read(sc, UMOSCOM_LSR);
533 msr = umoscom_cfg_read(sc, UMOSCOM_MSR);
534
535 /* translate bits */
536
537 if (msr & UMOSCOM_MSR_CTS)
538 *p_msr |= SER_CTS;
539
540 if (msr & UMOSCOM_MSR_CD)
541 *p_msr |= SER_DCD;
542
543 if (msr & UMOSCOM_MSR_RI)
544 *p_msr |= SER_RI;
545
546 if (msr & UMOSCOM_MSR_RTS)
547 *p_msr |= SER_DSR;
548 }
549
550 static void
umoscom_cfg_write(struct umoscom_softc * sc,uint16_t reg,uint16_t val)551 umoscom_cfg_write(struct umoscom_softc *sc, uint16_t reg, uint16_t val)
552 {
553 struct usb_device_request req;
554
555 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
556 req.bRequest = UMOSCOM_WRITE;
557 USETW(req.wValue, val);
558 USETW(req.wIndex, reg);
559 USETW(req.wLength, 0);
560
561 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
562 &req, NULL, 0, 1000);
563 }
564
565 static uint8_t
umoscom_cfg_read(struct umoscom_softc * sc,uint16_t reg)566 umoscom_cfg_read(struct umoscom_softc *sc, uint16_t reg)
567 {
568 struct usb_device_request req;
569 uint8_t val;
570
571 req.bmRequestType = UT_READ_VENDOR_DEVICE;
572 req.bRequest = UMOSCOM_READ;
573 USETW(req.wValue, 0);
574 USETW(req.wIndex, reg);
575 USETW(req.wLength, 1);
576
577 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
578 &req, &val, 0, 1000);
579
580 DPRINTF("reg=0x%04x, val=0x%02x\n", reg, val);
581
582 return (val);
583 }
584
585 static void
umoscom_start_read(struct ucom_softc * ucom)586 umoscom_start_read(struct ucom_softc *ucom)
587 {
588 struct umoscom_softc *sc = ucom->sc_parent;
589
590 #if 0
591 /* start interrupt endpoint */
592 usbd_transfer_start(sc->sc_xfer[UMOSCOM_INTR_DT_RD]);
593 #endif
594 /* start read endpoint */
595 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
596 }
597
598 static void
umoscom_stop_read(struct ucom_softc * ucom)599 umoscom_stop_read(struct ucom_softc *ucom)
600 {
601 struct umoscom_softc *sc = ucom->sc_parent;
602
603 /* stop interrupt transfer */
604 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_INTR_DT_RD]);
605
606 /* stop read endpoint */
607 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_RD]);
608 }
609
610 static void
umoscom_start_write(struct ucom_softc * ucom)611 umoscom_start_write(struct ucom_softc *ucom)
612 {
613 struct umoscom_softc *sc = ucom->sc_parent;
614
615 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
616 }
617
618 static void
umoscom_stop_write(struct ucom_softc * ucom)619 umoscom_stop_write(struct ucom_softc *ucom)
620 {
621 struct umoscom_softc *sc = ucom->sc_parent;
622
623 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_WR]);
624 }
625
626 static void
umoscom_write_callback(struct usb_xfer * xfer,usb_error_t error)627 umoscom_write_callback(struct usb_xfer *xfer, usb_error_t error)
628 {
629 struct umoscom_softc *sc = usbd_xfer_softc(xfer);
630 struct usb_page_cache *pc;
631 uint32_t actlen;
632
633 switch (USB_GET_STATE(xfer)) {
634 case USB_ST_SETUP:
635 case USB_ST_TRANSFERRED:
636 tr_setup:
637 DPRINTF("\n");
638
639 pc = usbd_xfer_get_frame(xfer, 0);
640 if (ucom_get_data(&sc->sc_ucom, pc, 0,
641 UMOSCOM_BUFSIZE, &actlen)) {
642 usbd_xfer_set_frame_len(xfer, 0, actlen);
643 usbd_transfer_submit(xfer);
644 }
645 return;
646
647 default: /* Error */
648 if (error != USB_ERR_CANCELLED) {
649 DPRINTFN(0, "transfer failed\n");
650 /* try to clear stall first */
651 usbd_xfer_set_stall(xfer);
652 goto tr_setup;
653 }
654 return;
655 }
656 }
657
658 static void
umoscom_read_callback(struct usb_xfer * xfer,usb_error_t error)659 umoscom_read_callback(struct usb_xfer *xfer, usb_error_t error)
660 {
661 struct umoscom_softc *sc = usbd_xfer_softc(xfer);
662 struct usb_page_cache *pc;
663 int actlen;
664
665 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
666
667 switch (USB_GET_STATE(xfer)) {
668 case USB_ST_TRANSFERRED:
669 DPRINTF("got %d bytes\n", actlen);
670 pc = usbd_xfer_get_frame(xfer, 0);
671 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
672
673 case USB_ST_SETUP:
674 tr_setup:
675 DPRINTF("\n");
676
677 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
678 usbd_transfer_submit(xfer);
679 return;
680
681 default: /* Error */
682 if (error != USB_ERR_CANCELLED) {
683 DPRINTFN(0, "transfer failed\n");
684 /* try to clear stall first */
685 usbd_xfer_set_stall(xfer);
686 goto tr_setup;
687 }
688 return;
689 }
690 }
691
692 static void
umoscom_intr_callback(struct usb_xfer * xfer,usb_error_t error)693 umoscom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
694 {
695 struct umoscom_softc *sc = usbd_xfer_softc(xfer);
696 int actlen;
697
698 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
699
700 switch (USB_GET_STATE(xfer)) {
701 case USB_ST_TRANSFERRED:
702 if (actlen < 2) {
703 DPRINTF("too short message\n");
704 goto tr_setup;
705 }
706 ucom_status_change(&sc->sc_ucom);
707
708 case USB_ST_SETUP:
709 tr_setup:
710 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
711 usbd_transfer_submit(xfer);
712 return;
713
714 default: /* Error */
715 if (error != USB_ERR_CANCELLED) {
716 DPRINTFN(0, "transfer failed\n");
717 /* try to clear stall first */
718 usbd_xfer_set_stall(xfer);
719 goto tr_setup;
720 }
721 return;
722 }
723 }
724
725 static void
umoscom_poll(struct ucom_softc * ucom)726 umoscom_poll(struct ucom_softc *ucom)
727 {
728 struct umoscom_softc *sc = ucom->sc_parent;
729 usbd_transfer_poll(sc->sc_xfer, UMOSCOM_N_TRANSFER);
730 }
731