1 /* $NetBSD: uvisor.c,v 1.9 2001/01/23 14:04:14 augustss Exp $ */
2 /* $FreeBSD$ */
3
4 /* Also already merged from NetBSD:
5 * $NetBSD: uvisor.c,v 1.12 2001/11/13 06:24:57 lukem Exp $
6 * $NetBSD: uvisor.c,v 1.13 2002/02/11 15:11:49 augustss Exp $
7 * $NetBSD: uvisor.c,v 1.14 2002/02/27 23:00:03 augustss Exp $
8 * $NetBSD: uvisor.c,v 1.15 2002/06/16 15:01:31 augustss Exp $
9 * $NetBSD: uvisor.c,v 1.16 2002/07/11 21:14:36 augustss Exp $
10 * $NetBSD: uvisor.c,v 1.17 2002/08/13 11:38:15 augustss Exp $
11 * $NetBSD: uvisor.c,v 1.18 2003/02/05 00:50:14 augustss Exp $
12 * $NetBSD: uvisor.c,v 1.19 2003/02/07 18:12:37 augustss Exp $
13 * $NetBSD: uvisor.c,v 1.20 2003/04/11 01:30:10 simonb Exp $
14 */
15
16 /*-
17 * Copyright (c) 2000 The NetBSD Foundation, Inc.
18 * All rights reserved.
19 *
20 * This code is derived from software contributed to The NetBSD Foundation
21 * by Lennart Augustsson (lennart@augustsson.net) at
22 * Carlstedt Research & Technology.
23 *
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
26 * are met:
27 * 1. Redistributions of source code must retain the above copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 *
33 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
34 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
35 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
36 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
37 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
38 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
39 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
40 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
41 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
43 * POSSIBILITY OF SUCH DAMAGE.
44 */
45
46 /*
47 * Handspring Visor (Palmpilot compatible PDA) driver
48 */
49
50 #include <sys/stdint.h>
51 #include <sys/param.h>
52 #include <sys/queue.h>
53 #include <sys/types.h>
54 #include <sys/systm.h>
55 #include <sys/kernel.h>
56 #include <sys/bus.h>
57 #include <sys/module.h>
58 #include <sys/lock.h>
59 #include <sys/condvar.h>
60 #include <sys/sysctl.h>
61 #include <sys/unistd.h>
62 #include <sys/callout.h>
63 #include <sys/malloc.h>
64 #include <sys/caps.h>
65
66 #include <bus/u4b/usb.h>
67 #include <bus/u4b/usbdi.h>
68 #include <bus/u4b/usbdi_util.h>
69 #include "usbdevs.h"
70
71 #define USB_DEBUG_VAR uvisor_debug
72 #include <bus/u4b/usb_debug.h>
73 #include <bus/u4b/usb_process.h>
74
75 #include <bus/u4b/serial/usb_serial.h>
76
77 #ifdef USB_DEBUG
78 static int uvisor_debug = 0;
79
80 static SYSCTL_NODE(_hw_usb, OID_AUTO, uvisor, CTLFLAG_RW, 0, "USB uvisor");
81 SYSCTL_INT(_hw_usb_uvisor, OID_AUTO, debug, CTLFLAG_RW,
82 &uvisor_debug, 0, "Debug level");
83 #endif
84
85 #define UVISOR_CONFIG_INDEX 0
86 #define UVISOR_IFACE_INDEX 0
87
88 /*
89 * The following buffer sizes are hardcoded due to the way the Palm
90 * firmware works. It looks like the device is not short terminating
91 * the data transferred.
92 */
93 #define UVISORIBUFSIZE 0 /* Use wMaxPacketSize */
94 #define UVISOROBUFSIZE 32 /* bytes */
95 #define UVISOROFRAMES 32 /* units */
96
97 /* From the Linux driver */
98 /*
99 * UVISOR_REQUEST_BYTES_AVAILABLE asks the visor for the number of bytes that
100 * are available to be transfered to the host for the specified endpoint.
101 * Currently this is not used, and always returns 0x0001
102 */
103 #define UVISOR_REQUEST_BYTES_AVAILABLE 0x01
104
105 /*
106 * UVISOR_CLOSE_NOTIFICATION is set to the device to notify it that the host
107 * is now closing the pipe. An empty packet is sent in response.
108 */
109 #define UVISOR_CLOSE_NOTIFICATION 0x02
110
111 /*
112 * UVISOR_GET_CONNECTION_INFORMATION is sent by the host during enumeration to
113 * get the endpoints used by the connection.
114 */
115 #define UVISOR_GET_CONNECTION_INFORMATION 0x03
116
117 /*
118 * UVISOR_GET_CONNECTION_INFORMATION returns data in the following format
119 */
120 #define UVISOR_MAX_CONN 8
121 struct uvisor_connection_info {
122 uWord num_ports;
123 struct {
124 uByte port_function_id;
125 uByte port;
126 } __packed connections[UVISOR_MAX_CONN];
127 } __packed;
128
129 #define UVISOR_CONNECTION_INFO_SIZE 18
130
131 /* struct uvisor_connection_info.connection[x].port defines: */
132 #define UVISOR_ENDPOINT_1 0x01
133 #define UVISOR_ENDPOINT_2 0x02
134
135 /* struct uvisor_connection_info.connection[x].port_function_id defines: */
136 #define UVISOR_FUNCTION_GENERIC 0x00
137 #define UVISOR_FUNCTION_DEBUGGER 0x01
138 #define UVISOR_FUNCTION_HOTSYNC 0x02
139 #define UVISOR_FUNCTION_CONSOLE 0x03
140 #define UVISOR_FUNCTION_REMOTE_FILE_SYS 0x04
141
142 /*
143 * Unknown PalmOS stuff.
144 */
145 #define UVISOR_GET_PALM_INFORMATION 0x04
146 #define UVISOR_GET_PALM_INFORMATION_LEN 0x44
147
148 struct uvisor_palm_connection_info {
149 uByte num_ports;
150 uByte endpoint_numbers_different;
151 uWord reserved1;
152 struct {
153 uDWord port_function_id;
154 uByte port;
155 uByte end_point_info;
156 uWord reserved;
157 } __packed connections[UVISOR_MAX_CONN];
158 } __packed;
159
160 enum {
161 UVISOR_BULK_DT_WR,
162 UVISOR_BULK_DT_RD,
163 UVISOR_N_TRANSFER,
164 };
165
166 struct uvisor_softc {
167 struct ucom_super_softc sc_super_ucom;
168 struct ucom_softc sc_ucom;
169
170 struct usb_xfer *sc_xfer[UVISOR_N_TRANSFER];
171 struct usb_device *sc_udev;
172 struct lock sc_lock;
173
174 uint16_t sc_flag;
175 #define UVISOR_FLAG_PALM4 0x0001
176 #define UVISOR_FLAG_VISOR 0x0002
177 #define UVISOR_FLAG_PALM35 0x0004
178 #define UVISOR_FLAG_SEND_NOTIFY 0x0008
179
180 uint8_t sc_iface_no;
181 uint8_t sc_iface_index;
182 };
183
184 /* prototypes */
185
186 static device_probe_t uvisor_probe;
187 static device_attach_t uvisor_attach;
188 static device_detach_t uvisor_detach;
189
190 static usb_callback_t uvisor_write_callback;
191 static usb_callback_t uvisor_read_callback;
192
193 static usb_error_t uvisor_init(struct uvisor_softc *, struct usb_device *,
194 struct usb_config *);
195 static void uvisor_cfg_open(struct ucom_softc *);
196 static void uvisor_cfg_close(struct ucom_softc *);
197 static void uvisor_start_read(struct ucom_softc *);
198 static void uvisor_stop_read(struct ucom_softc *);
199 static void uvisor_start_write(struct ucom_softc *);
200 static void uvisor_stop_write(struct ucom_softc *);
201
202 static const struct usb_config uvisor_config[UVISOR_N_TRANSFER] = {
203
204 [UVISOR_BULK_DT_WR] = {
205 .type = UE_BULK,
206 .endpoint = UE_ADDR_ANY,
207 .direction = UE_DIR_OUT,
208 .bufsize = UVISOROBUFSIZE * UVISOROFRAMES,
209 .frames = UVISOROFRAMES,
210 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
211 .callback = &uvisor_write_callback,
212 },
213
214 [UVISOR_BULK_DT_RD] = {
215 .type = UE_BULK,
216 .endpoint = UE_ADDR_ANY,
217 .direction = UE_DIR_IN,
218 .bufsize = UVISORIBUFSIZE,
219 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
220 .callback = &uvisor_read_callback,
221 },
222 };
223
224 static const struct ucom_callback uvisor_callback = {
225 .ucom_cfg_open = &uvisor_cfg_open,
226 .ucom_cfg_close = &uvisor_cfg_close,
227 .ucom_start_read = &uvisor_start_read,
228 .ucom_stop_read = &uvisor_stop_read,
229 .ucom_start_write = &uvisor_start_write,
230 .ucom_stop_write = &uvisor_stop_write,
231 };
232
233 static device_method_t uvisor_methods[] = {
234 DEVMETHOD(device_probe, uvisor_probe),
235 DEVMETHOD(device_attach, uvisor_attach),
236 DEVMETHOD(device_detach, uvisor_detach),
237 DEVMETHOD_END
238 };
239
240 static devclass_t uvisor_devclass;
241
242 static driver_t uvisor_driver = {
243 .name = "uvisor",
244 .methods = uvisor_methods,
245 .size = sizeof(struct uvisor_softc),
246 };
247
248 static const STRUCT_USB_HOST_ID uvisor_devs[] = {
249 #define UVISOR_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
250 UVISOR_DEV(ACEECA, MEZ1000, UVISOR_FLAG_PALM4),
251 UVISOR_DEV(ALPHASMART, DANA_SYNC, UVISOR_FLAG_PALM4),
252 UVISOR_DEV(GARMIN, IQUE_3600, UVISOR_FLAG_PALM4),
253 UVISOR_DEV(FOSSIL, WRISTPDA, UVISOR_FLAG_PALM4),
254 UVISOR_DEV(HANDSPRING, VISOR, UVISOR_FLAG_VISOR),
255 UVISOR_DEV(HANDSPRING, TREO, UVISOR_FLAG_PALM4),
256 UVISOR_DEV(HANDSPRING, TREO600, UVISOR_FLAG_PALM4),
257 UVISOR_DEV(PALM, M500, UVISOR_FLAG_PALM4),
258 UVISOR_DEV(PALM, M505, UVISOR_FLAG_PALM4),
259 UVISOR_DEV(PALM, M515, UVISOR_FLAG_PALM4),
260 UVISOR_DEV(PALM, I705, UVISOR_FLAG_PALM4),
261 UVISOR_DEV(PALM, M125, UVISOR_FLAG_PALM4),
262 UVISOR_DEV(PALM, M130, UVISOR_FLAG_PALM4),
263 UVISOR_DEV(PALM, TUNGSTEN_Z, UVISOR_FLAG_PALM4),
264 UVISOR_DEV(PALM, TUNGSTEN_T, UVISOR_FLAG_PALM4),
265 UVISOR_DEV(PALM, ZIRE, UVISOR_FLAG_PALM4),
266 UVISOR_DEV(PALM, ZIRE31, UVISOR_FLAG_PALM4),
267 UVISOR_DEV(SAMSUNG, I500, UVISOR_FLAG_PALM4),
268 UVISOR_DEV(SONY, CLIE_40, 0),
269 UVISOR_DEV(SONY, CLIE_41, 0),
270 UVISOR_DEV(SONY, CLIE_S360, UVISOR_FLAG_PALM4),
271 UVISOR_DEV(SONY, CLIE_NX60, UVISOR_FLAG_PALM4),
272 UVISOR_DEV(SONY, CLIE_35, UVISOR_FLAG_PALM35),
273 /* UVISOR_DEV(SONY, CLIE_25, UVISOR_FLAG_PALM4 ), */
274 UVISOR_DEV(SONY, CLIE_TJ37, UVISOR_FLAG_PALM4),
275 /* UVISOR_DEV(SONY, CLIE_TH55, UVISOR_FLAG_PALM4 ), See PR 80935 */
276 UVISOR_DEV(TAPWAVE, ZODIAC, UVISOR_FLAG_PALM4),
277 #undef UVISOR_DEV
278 };
279
280 DRIVER_MODULE(uvisor, uhub, uvisor_driver, uvisor_devclass, NULL, NULL);
281 MODULE_DEPEND(uvisor, ucom, 1, 1, 1);
282 MODULE_DEPEND(uvisor, usb, 1, 1, 1);
283 MODULE_VERSION(uvisor, 1);
284
285 static int
uvisor_probe(device_t dev)286 uvisor_probe(device_t dev)
287 {
288 struct usb_attach_arg *uaa = device_get_ivars(dev);
289
290 if (uaa->usb_mode != USB_MODE_HOST) {
291 return (ENXIO);
292 }
293 if (uaa->info.bConfigIndex != UVISOR_CONFIG_INDEX) {
294 return (ENXIO);
295 }
296 if (uaa->info.bIfaceIndex != UVISOR_IFACE_INDEX) {
297 return (ENXIO);
298 }
299 return (usbd_lookup_id_by_uaa(uvisor_devs, sizeof(uvisor_devs), uaa));
300 }
301
302 static int
uvisor_attach(device_t dev)303 uvisor_attach(device_t dev)
304 {
305 struct usb_attach_arg *uaa = device_get_ivars(dev);
306 struct uvisor_softc *sc = device_get_softc(dev);
307 struct usb_config uvisor_config_copy[UVISOR_N_TRANSFER];
308 int error;
309
310 DPRINTF("sc=%p\n", sc);
311 memcpy(uvisor_config_copy, uvisor_config,
312 sizeof(uvisor_config_copy));
313
314 device_set_usb_desc(dev);
315
316 lockinit(&sc->sc_lock, "uvisor", 0, LK_CANRECURSE);
317
318 sc->sc_udev = uaa->device;
319
320 /* configure the device */
321
322 sc->sc_flag = USB_GET_DRIVER_INFO(uaa);
323 sc->sc_iface_no = uaa->info.bIfaceNum;
324 sc->sc_iface_index = UVISOR_IFACE_INDEX;
325
326 error = uvisor_init(sc, uaa->device, uvisor_config_copy);
327
328 if (error) {
329 DPRINTF("init failed, error=%s\n",
330 usbd_errstr(error));
331 goto detach;
332 }
333 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index,
334 sc->sc_xfer, uvisor_config_copy, UVISOR_N_TRANSFER,
335 sc, &sc->sc_lock);
336 if (error) {
337 DPRINTF("could not allocate all pipes\n");
338 goto detach;
339 }
340
341 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
342 &uvisor_callback, &sc->sc_lock);
343 if (error) {
344 DPRINTF("ucom_attach failed\n");
345 goto detach;
346 }
347 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
348
349 return (0);
350
351 detach:
352 uvisor_detach(dev);
353 return (ENXIO);
354 }
355
356 static int
uvisor_detach(device_t dev)357 uvisor_detach(device_t dev)
358 {
359 struct uvisor_softc *sc = device_get_softc(dev);
360
361 DPRINTF("sc=%p\n", sc);
362
363 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
364 usbd_transfer_unsetup(sc->sc_xfer, UVISOR_N_TRANSFER);
365 lockuninit(&sc->sc_lock);
366
367 return (0);
368 }
369
370 static usb_error_t
uvisor_init(struct uvisor_softc * sc,struct usb_device * udev,struct usb_config * config)371 uvisor_init(struct uvisor_softc *sc, struct usb_device *udev, struct usb_config *config)
372 {
373 usb_error_t err = 0;
374 struct usb_device_request req;
375 struct uvisor_connection_info coninfo;
376 struct uvisor_palm_connection_info pconinfo;
377 uint16_t actlen;
378 uint8_t buffer[256];
379
380 if (sc->sc_flag & UVISOR_FLAG_VISOR) {
381 DPRINTF("getting connection info\n");
382 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
383 req.bRequest = UVISOR_GET_CONNECTION_INFORMATION;
384 USETW(req.wValue, 0);
385 USETW(req.wIndex, 0);
386 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE);
387 err = usbd_do_request_flags(udev, NULL,
388 &req, &coninfo, USB_SHORT_XFER_OK,
389 &actlen, USB_DEFAULT_TIMEOUT);
390
391 if (err) {
392 goto done;
393 }
394 }
395 #ifdef USB_DEBUG
396 if (sc->sc_flag & UVISOR_FLAG_VISOR) {
397 uint16_t i, np;
398 const char *desc;
399
400 np = UGETW(coninfo.num_ports);
401 if (np > UVISOR_MAX_CONN) {
402 np = UVISOR_MAX_CONN;
403 }
404 DPRINTF("Number of ports: %d\n", np);
405
406 for (i = 0; i < np; ++i) {
407 switch (coninfo.connections[i].port_function_id) {
408 case UVISOR_FUNCTION_GENERIC:
409 desc = "Generic";
410 break;
411 case UVISOR_FUNCTION_DEBUGGER:
412 desc = "Debugger";
413 break;
414 case UVISOR_FUNCTION_HOTSYNC:
415 desc = "HotSync";
416 break;
417 case UVISOR_FUNCTION_REMOTE_FILE_SYS:
418 desc = "Remote File System";
419 break;
420 default:
421 desc = "unknown";
422 break;
423 }
424 DPRINTF("Port %d is for %s\n",
425 coninfo.connections[i].port, desc);
426 }
427 }
428 #endif
429
430 if (sc->sc_flag & UVISOR_FLAG_PALM4) {
431 uint8_t port;
432
433 /* Palm OS 4.0 Hack */
434 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
435 req.bRequest = UVISOR_GET_PALM_INFORMATION;
436 USETW(req.wValue, 0);
437 USETW(req.wIndex, 0);
438 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN);
439
440 err = usbd_do_request_flags
441 (udev, NULL, &req, &pconinfo, USB_SHORT_XFER_OK,
442 &actlen, USB_DEFAULT_TIMEOUT);
443
444 if (err) {
445 goto done;
446 }
447 if (actlen < 12) {
448 DPRINTF("too little data\n");
449 err = USB_ERR_INVAL;
450 goto done;
451 }
452 if (pconinfo.endpoint_numbers_different) {
453 port = pconinfo.connections[0].end_point_info;
454 config[0].endpoint = (port & 0xF); /* output */
455 config[1].endpoint = (port >> 4); /* input */
456 } else {
457 port = pconinfo.connections[0].port;
458 config[0].endpoint = (port & 0xF); /* output */
459 config[1].endpoint = (port & 0xF); /* input */
460 }
461 #if 0
462 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
463 req.bRequest = UVISOR_GET_PALM_INFORMATION;
464 USETW(req.wValue, 0);
465 USETW(req.wIndex, 0);
466 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN);
467 err = usbd_do_request(udev, &req, buffer);
468 if (err) {
469 goto done;
470 }
471 #endif
472 }
473 if (sc->sc_flag & UVISOR_FLAG_PALM35) {
474 /* get the config number */
475 DPRINTF("getting config info\n");
476 req.bmRequestType = UT_READ;
477 req.bRequest = UR_GET_CONFIG;
478 USETW(req.wValue, 0);
479 USETW(req.wIndex, 0);
480 USETW(req.wLength, 1);
481
482 err = usbd_do_request(udev, NULL, &req, buffer);
483 if (err) {
484 goto done;
485 }
486 /* get the interface number */
487 DPRINTF("get the interface number\n");
488 req.bmRequestType = UT_READ_DEVICE;
489 req.bRequest = UR_GET_INTERFACE;
490 USETW(req.wValue, 0);
491 USETW(req.wIndex, 0);
492 USETW(req.wLength, 1);
493 err = usbd_do_request(udev, NULL, &req, buffer);
494 if (err) {
495 goto done;
496 }
497 }
498 #if 0
499 uWord wAvail;
500
501 DPRINTF("getting available bytes\n");
502 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
503 req.bRequest = UVISOR_REQUEST_BYTES_AVAILABLE;
504 USETW(req.wValue, 0);
505 USETW(req.wIndex, 5);
506 USETW(req.wLength, sizeof(wAvail));
507 err = usbd_do_request(udev, NULL, &req, &wAvail);
508 if (err) {
509 goto done;
510 }
511 DPRINTF("avail=%d\n", UGETW(wAvail));
512 #endif
513
514 DPRINTF("done\n");
515 done:
516 return (err);
517 }
518
519 static void
uvisor_cfg_open(struct ucom_softc * ucom)520 uvisor_cfg_open(struct ucom_softc *ucom)
521 {
522 return;
523 }
524
525 static void
uvisor_cfg_close(struct ucom_softc * ucom)526 uvisor_cfg_close(struct ucom_softc *ucom)
527 {
528 struct uvisor_softc *sc = ucom->sc_parent;
529 uint8_t buffer[UVISOR_CONNECTION_INFO_SIZE];
530 struct usb_device_request req;
531 usb_error_t err;
532
533 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; /* XXX read? */
534 req.bRequest = UVISOR_CLOSE_NOTIFICATION;
535 USETW(req.wValue, 0);
536 USETW(req.wIndex, 0);
537 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE);
538
539 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
540 &req, buffer, 0, 1000);
541 if (err) {
542 DPRINTFN(0, "close notification failed, error=%s\n",
543 usbd_errstr(err));
544 }
545 }
546
547 static void
uvisor_start_read(struct ucom_softc * ucom)548 uvisor_start_read(struct ucom_softc *ucom)
549 {
550 struct uvisor_softc *sc = ucom->sc_parent;
551
552 usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_RD]);
553 }
554
555 static void
uvisor_stop_read(struct ucom_softc * ucom)556 uvisor_stop_read(struct ucom_softc *ucom)
557 {
558 struct uvisor_softc *sc = ucom->sc_parent;
559
560 usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_RD]);
561 }
562
563 static void
uvisor_start_write(struct ucom_softc * ucom)564 uvisor_start_write(struct ucom_softc *ucom)
565 {
566 struct uvisor_softc *sc = ucom->sc_parent;
567
568 usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_WR]);
569 }
570
571 static void
uvisor_stop_write(struct ucom_softc * ucom)572 uvisor_stop_write(struct ucom_softc *ucom)
573 {
574 struct uvisor_softc *sc = ucom->sc_parent;
575
576 usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_WR]);
577 }
578
579 static void
uvisor_write_callback(struct usb_xfer * xfer,usb_error_t error)580 uvisor_write_callback(struct usb_xfer *xfer, usb_error_t error)
581 {
582 struct uvisor_softc *sc = usbd_xfer_softc(xfer);
583 struct usb_page_cache *pc;
584 uint32_t actlen;
585 uint8_t x;
586
587 switch (USB_GET_STATE(xfer)) {
588 case USB_ST_SETUP:
589 case USB_ST_TRANSFERRED:
590 tr_setup:
591 for (x = 0; x != UVISOROFRAMES; x++) {
592
593 usbd_xfer_set_frame_offset(xfer,
594 x * UVISOROBUFSIZE, x);
595
596 pc = usbd_xfer_get_frame(xfer, x);
597 if (ucom_get_data(&sc->sc_ucom, pc, 0,
598 UVISOROBUFSIZE, &actlen)) {
599 usbd_xfer_set_frame_len(xfer, x, actlen);
600 } else {
601 break;
602 }
603 }
604 /* check for data */
605 if (x != 0) {
606 usbd_xfer_set_frames(xfer, x);
607 usbd_transfer_submit(xfer);
608 }
609 break;
610
611 default: /* Error */
612 if (error != USB_ERR_CANCELLED) {
613 /* try to clear stall first */
614 usbd_xfer_set_stall(xfer);
615 goto tr_setup;
616 }
617 break;
618 }
619 }
620
621 static void
uvisor_read_callback(struct usb_xfer * xfer,usb_error_t error)622 uvisor_read_callback(struct usb_xfer *xfer, usb_error_t error)
623 {
624 struct uvisor_softc *sc = usbd_xfer_softc(xfer);
625 struct usb_page_cache *pc;
626 int actlen;
627
628 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
629
630 switch (USB_GET_STATE(xfer)) {
631 case USB_ST_TRANSFERRED:
632 pc = usbd_xfer_get_frame(xfer, 0);
633 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
634
635 case USB_ST_SETUP:
636 tr_setup:
637 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
638 usbd_transfer_submit(xfer);
639 return;
640
641 default: /* Error */
642 if (error != USB_ERR_CANCELLED) {
643 /* try to clear stall first */
644 usbd_xfer_set_stall(xfer);
645 goto tr_setup;
646 }
647 return;
648 }
649 }
650