uvisor.c revision 214761
1/* $NetBSD: uvisor.c,v 1.9 2001/01/23 14:04:14 augustss Exp $ */ 2/* $FreeBSD: head/sys/dev/usb/serial/uvisor.c 214761 2010-11-03 21:50:49Z n_hibma $ */ 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/stddef.h> 52#include <sys/param.h> 53#include <sys/queue.h> 54#include <sys/types.h> 55#include <sys/systm.h> 56#include <sys/kernel.h> 57#include <sys/bus.h> 58#include <sys/linker_set.h> 59#include <sys/module.h> 60#include <sys/lock.h> 61#include <sys/mutex.h> 62#include <sys/condvar.h> 63#include <sys/sysctl.h> 64#include <sys/sx.h> 65#include <sys/unistd.h> 66#include <sys/callout.h> 67#include <sys/malloc.h> 68#include <sys/priv.h> 69 70#include <dev/usb/usb.h> 71#include <dev/usb/usbdi.h> 72#include <dev/usb/usbdi_util.h> 73#include "usbdevs.h" 74 75#define USB_DEBUG_VAR uvisor_debug 76#include <dev/usb/usb_debug.h> 77#include <dev/usb/usb_process.h> 78 79#include <dev/usb/serial/usb_serial.h> 80 81#ifdef USB_DEBUG 82static int uvisor_debug = 0; 83 84SYSCTL_NODE(_hw_usb, OID_AUTO, uvisor, CTLFLAG_RW, 0, "USB uvisor"); 85SYSCTL_INT(_hw_usb_uvisor, OID_AUTO, debug, CTLFLAG_RW, 86 &uvisor_debug, 0, "Debug level"); 87#endif 88 89#define UVISOR_CONFIG_INDEX 0 90#define UVISOR_IFACE_INDEX 0 91 92/* 93 * The following buffer sizes are hardcoded due to the way the Palm 94 * firmware works. It looks like the device is not short terminating 95 * the data transferred. 96 */ 97#define UVISORIBUFSIZE 0 /* Use wMaxPacketSize */ 98#define UVISOROBUFSIZE 32 /* bytes */ 99#define UVISOROFRAMES 32 /* units */ 100 101/* From the Linux driver */ 102/* 103 * UVISOR_REQUEST_BYTES_AVAILABLE asks the visor for the number of bytes that 104 * are available to be transfered to the host for the specified endpoint. 105 * Currently this is not used, and always returns 0x0001 106 */ 107#define UVISOR_REQUEST_BYTES_AVAILABLE 0x01 108 109/* 110 * UVISOR_CLOSE_NOTIFICATION is set to the device to notify it that the host 111 * is now closing the pipe. An empty packet is sent in response. 112 */ 113#define UVISOR_CLOSE_NOTIFICATION 0x02 114 115/* 116 * UVISOR_GET_CONNECTION_INFORMATION is sent by the host during enumeration to 117 * get the endpoints used by the connection. 118 */ 119#define UVISOR_GET_CONNECTION_INFORMATION 0x03 120 121/* 122 * UVISOR_GET_CONNECTION_INFORMATION returns data in the following format 123 */ 124#define UVISOR_MAX_CONN 8 125struct uvisor_connection_info { 126 uWord num_ports; 127 struct { 128 uByte port_function_id; 129 uByte port; 130 } __packed connections[UVISOR_MAX_CONN]; 131} __packed; 132 133#define UVISOR_CONNECTION_INFO_SIZE 18 134 135/* struct uvisor_connection_info.connection[x].port defines: */ 136#define UVISOR_ENDPOINT_1 0x01 137#define UVISOR_ENDPOINT_2 0x02 138 139/* struct uvisor_connection_info.connection[x].port_function_id defines: */ 140#define UVISOR_FUNCTION_GENERIC 0x00 141#define UVISOR_FUNCTION_DEBUGGER 0x01 142#define UVISOR_FUNCTION_HOTSYNC 0x02 143#define UVISOR_FUNCTION_CONSOLE 0x03 144#define UVISOR_FUNCTION_REMOTE_FILE_SYS 0x04 145 146/* 147 * Unknown PalmOS stuff. 148 */ 149#define UVISOR_GET_PALM_INFORMATION 0x04 150#define UVISOR_GET_PALM_INFORMATION_LEN 0x44 151 152struct uvisor_palm_connection_info { 153 uByte num_ports; 154 uByte endpoint_numbers_different; 155 uWord reserved1; 156 struct { 157 uDWord port_function_id; 158 uByte port; 159 uByte end_point_info; 160 uWord reserved; 161 } __packed connections[UVISOR_MAX_CONN]; 162} __packed; 163 164enum { 165 UVISOR_BULK_DT_WR, 166 UVISOR_BULK_DT_RD, 167 UVISOR_N_TRANSFER, 168}; 169 170struct uvisor_softc { 171 struct ucom_super_softc sc_super_ucom; 172 struct ucom_softc sc_ucom; 173 174 struct usb_xfer *sc_xfer[UVISOR_N_TRANSFER]; 175 struct usb_device *sc_udev; 176 struct mtx sc_mtx; 177 178 uint16_t sc_flag; 179#define UVISOR_FLAG_PALM4 0x0001 180#define UVISOR_FLAG_VISOR 0x0002 181#define UVISOR_FLAG_PALM35 0x0004 182#define UVISOR_FLAG_SEND_NOTIFY 0x0008 183 184 uint8_t sc_iface_no; 185 uint8_t sc_iface_index; 186}; 187 188/* prototypes */ 189 190static device_probe_t uvisor_probe; 191static device_attach_t uvisor_attach; 192static device_detach_t uvisor_detach; 193 194static usb_callback_t uvisor_write_callback; 195static usb_callback_t uvisor_read_callback; 196 197static usb_error_t uvisor_init(struct uvisor_softc *, struct usb_device *, 198 struct usb_config *); 199static void uvisor_cfg_open(struct ucom_softc *); 200static void uvisor_cfg_close(struct ucom_softc *); 201static void uvisor_start_read(struct ucom_softc *); 202static void uvisor_stop_read(struct ucom_softc *); 203static void uvisor_start_write(struct ucom_softc *); 204static void uvisor_stop_write(struct ucom_softc *); 205 206static const struct usb_config uvisor_config[UVISOR_N_TRANSFER] = { 207 208 [UVISOR_BULK_DT_WR] = { 209 .type = UE_BULK, 210 .endpoint = UE_ADDR_ANY, 211 .direction = UE_DIR_OUT, 212 .bufsize = UVISOROBUFSIZE * UVISOROFRAMES, 213 .frames = UVISOROFRAMES, 214 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 215 .callback = &uvisor_write_callback, 216 }, 217 218 [UVISOR_BULK_DT_RD] = { 219 .type = UE_BULK, 220 .endpoint = UE_ADDR_ANY, 221 .direction = UE_DIR_IN, 222 .bufsize = UVISORIBUFSIZE, 223 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 224 .callback = &uvisor_read_callback, 225 }, 226}; 227 228static const struct ucom_callback uvisor_callback = { 229 .ucom_cfg_open = &uvisor_cfg_open, 230 .ucom_cfg_close = &uvisor_cfg_close, 231 .ucom_start_read = &uvisor_start_read, 232 .ucom_stop_read = &uvisor_stop_read, 233 .ucom_start_write = &uvisor_start_write, 234 .ucom_stop_write = &uvisor_stop_write, 235}; 236 237static device_method_t uvisor_methods[] = { 238 DEVMETHOD(device_probe, uvisor_probe), 239 DEVMETHOD(device_attach, uvisor_attach), 240 DEVMETHOD(device_detach, uvisor_detach), 241 {0, 0} 242}; 243 244static devclass_t uvisor_devclass; 245 246static driver_t uvisor_driver = { 247 .name = "uvisor", 248 .methods = uvisor_methods, 249 .size = sizeof(struct uvisor_softc), 250}; 251 252DRIVER_MODULE(uvisor, uhub, uvisor_driver, uvisor_devclass, NULL, 0); 253MODULE_DEPEND(uvisor, ucom, 1, 1, 1); 254MODULE_DEPEND(uvisor, usb, 1, 1, 1); 255MODULE_VERSION(uvisor, 1); 256 257static const struct usb_device_id uvisor_devs[] = { 258#define UVISOR_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) } 259 UVISOR_DEV(ACEECA, MEZ1000, UVISOR_FLAG_PALM4), 260 UVISOR_DEV(ALPHASMART, DANA_SYNC, UVISOR_FLAG_PALM4), 261 UVISOR_DEV(GARMIN, IQUE_3600, UVISOR_FLAG_PALM4), 262 UVISOR_DEV(FOSSIL, WRISTPDA, UVISOR_FLAG_PALM4), 263 UVISOR_DEV(HANDSPRING, VISOR, UVISOR_FLAG_VISOR), 264 UVISOR_DEV(HANDSPRING, TREO, UVISOR_FLAG_PALM4), 265 UVISOR_DEV(HANDSPRING, TREO600, UVISOR_FLAG_PALM4), 266 UVISOR_DEV(PALM, M500, UVISOR_FLAG_PALM4), 267 UVISOR_DEV(PALM, M505, UVISOR_FLAG_PALM4), 268 UVISOR_DEV(PALM, M515, UVISOR_FLAG_PALM4), 269 UVISOR_DEV(PALM, I705, UVISOR_FLAG_PALM4), 270 UVISOR_DEV(PALM, M125, UVISOR_FLAG_PALM4), 271 UVISOR_DEV(PALM, M130, UVISOR_FLAG_PALM4), 272 UVISOR_DEV(PALM, TUNGSTEN_Z, UVISOR_FLAG_PALM4), 273 UVISOR_DEV(PALM, TUNGSTEN_T, UVISOR_FLAG_PALM4), 274 UVISOR_DEV(PALM, ZIRE, UVISOR_FLAG_PALM4), 275 UVISOR_DEV(PALM, ZIRE31, UVISOR_FLAG_PALM4), 276 UVISOR_DEV(SAMSUNG, I500, UVISOR_FLAG_PALM4), 277 UVISOR_DEV(SONY, CLIE_40, 0), 278 UVISOR_DEV(SONY, CLIE_41, 0), 279 UVISOR_DEV(SONY, CLIE_S360, UVISOR_FLAG_PALM4), 280 UVISOR_DEV(SONY, CLIE_NX60, UVISOR_FLAG_PALM4), 281 UVISOR_DEV(SONY, CLIE_35, UVISOR_FLAG_PALM35), 282/* UVISOR_DEV(SONY, CLIE_25, UVISOR_FLAG_PALM4 ), */ 283 UVISOR_DEV(SONY, CLIE_TJ37, UVISOR_FLAG_PALM4), 284/* UVISOR_DEV(SONY, CLIE_TH55, UVISOR_FLAG_PALM4 ), See PR 80935 */ 285 UVISOR_DEV(TAPWAVE, ZODIAC, UVISOR_FLAG_PALM4), 286#undef UVISOR_DEV 287}; 288 289static int 290uvisor_probe(device_t dev) 291{ 292 struct usb_attach_arg *uaa = device_get_ivars(dev); 293 294 if (uaa->usb_mode != USB_MODE_HOST) { 295 return (ENXIO); 296 } 297 if (uaa->info.bConfigIndex != UVISOR_CONFIG_INDEX) { 298 return (ENXIO); 299 } 300 if (uaa->info.bIfaceIndex != UVISOR_IFACE_INDEX) { 301 return (ENXIO); 302 } 303 return (usbd_lookup_id_by_uaa(uvisor_devs, sizeof(uvisor_devs), uaa)); 304} 305 306static int 307uvisor_attach(device_t dev) 308{ 309 struct usb_attach_arg *uaa = device_get_ivars(dev); 310 struct uvisor_softc *sc = device_get_softc(dev); 311 struct usb_config uvisor_config_copy[UVISOR_N_TRANSFER]; 312 int error; 313 314 DPRINTF("sc=%p\n", sc); 315 bcopy(uvisor_config, uvisor_config_copy, 316 sizeof(uvisor_config_copy)); 317 device_set_usb_desc(dev); 318 319 mtx_init(&sc->sc_mtx, "uvisor", NULL, MTX_DEF); 320 321 sc->sc_udev = uaa->device; 322 323 /* configure the device */ 324 325 sc->sc_flag = USB_GET_DRIVER_INFO(uaa); 326 sc->sc_iface_no = uaa->info.bIfaceNum; 327 sc->sc_iface_index = UVISOR_IFACE_INDEX; 328 329 error = uvisor_init(sc, uaa->device, uvisor_config_copy); 330 331 if (error) { 332 DPRINTF("init failed, error=%s\n", 333 usbd_errstr(error)); 334 goto detach; 335 } 336 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 337 sc->sc_xfer, uvisor_config_copy, UVISOR_N_TRANSFER, 338 sc, &sc->sc_mtx); 339 if (error) { 340 DPRINTF("could not allocate all pipes\n"); 341 goto detach; 342 } 343 344 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 345 &uvisor_callback, &sc->sc_mtx); 346 if (error) { 347 DPRINTF("ucom_attach failed\n"); 348 goto detach; 349 } 350 return (0); 351 352detach: 353 uvisor_detach(dev); 354 return (ENXIO); 355} 356 357static int 358uvisor_detach(device_t dev) 359{ 360 struct uvisor_softc *sc = device_get_softc(dev); 361 362 DPRINTF("sc=%p\n", sc); 363 364 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 365 usbd_transfer_unsetup(sc->sc_xfer, UVISOR_N_TRANSFER); 366 mtx_destroy(&sc->sc_mtx); 367 368 return (0); 369} 370 371static usb_error_t 372uvisor_init(struct uvisor_softc *sc, struct usb_device *udev, struct usb_config *config) 373{ 374 usb_error_t err = 0; 375 struct usb_device_request req; 376 struct uvisor_connection_info coninfo; 377 struct uvisor_palm_connection_info pconinfo; 378 uint16_t actlen; 379 uint8_t buffer[256]; 380 381 if (sc->sc_flag & UVISOR_FLAG_VISOR) { 382 DPRINTF("getting connection info\n"); 383 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 384 req.bRequest = UVISOR_GET_CONNECTION_INFORMATION; 385 USETW(req.wValue, 0); 386 USETW(req.wIndex, 0); 387 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE); 388 err = usbd_do_request_flags(udev, NULL, 389 &req, &coninfo, USB_SHORT_XFER_OK, 390 &actlen, USB_DEFAULT_TIMEOUT); 391 392 if (err) { 393 goto done; 394 } 395 } 396#ifdef USB_DEBUG 397 if (sc->sc_flag & UVISOR_FLAG_VISOR) { 398 uint16_t i, np; 399 const char *desc; 400 401 np = UGETW(coninfo.num_ports); 402 if (np > UVISOR_MAX_CONN) { 403 np = UVISOR_MAX_CONN; 404 } 405 DPRINTF("Number of ports: %d\n", np); 406 407 for (i = 0; i < np; ++i) { 408 switch (coninfo.connections[i].port_function_id) { 409 case UVISOR_FUNCTION_GENERIC: 410 desc = "Generic"; 411 break; 412 case UVISOR_FUNCTION_DEBUGGER: 413 desc = "Debugger"; 414 break; 415 case UVISOR_FUNCTION_HOTSYNC: 416 desc = "HotSync"; 417 break; 418 case UVISOR_FUNCTION_REMOTE_FILE_SYS: 419 desc = "Remote File System"; 420 break; 421 default: 422 desc = "unknown"; 423 break; 424 } 425 DPRINTF("Port %d is for %s\n", 426 coninfo.connections[i].port, desc); 427 } 428 } 429#endif 430 431 if (sc->sc_flag & UVISOR_FLAG_PALM4) { 432 uint8_t port; 433 434 /* Palm OS 4.0 Hack */ 435 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 436 req.bRequest = UVISOR_GET_PALM_INFORMATION; 437 USETW(req.wValue, 0); 438 USETW(req.wIndex, 0); 439 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN); 440 441 err = usbd_do_request_flags 442 (udev, NULL, &req, &pconinfo, USB_SHORT_XFER_OK, 443 &actlen, USB_DEFAULT_TIMEOUT); 444 445 if (err) { 446 goto done; 447 } 448 if (actlen < 12) { 449 DPRINTF("too little data\n"); 450 err = USB_ERR_INVAL; 451 goto done; 452 } 453 if (pconinfo.endpoint_numbers_different) { 454 port = pconinfo.connections[0].end_point_info; 455 config[0].endpoint = (port & 0xF); /* output */ 456 config[1].endpoint = (port >> 4); /* input */ 457 } else { 458 port = pconinfo.connections[0].port; 459 config[0].endpoint = (port & 0xF); /* output */ 460 config[1].endpoint = (port & 0xF); /* input */ 461 } 462#if 0 463 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 464 req.bRequest = UVISOR_GET_PALM_INFORMATION; 465 USETW(req.wValue, 0); 466 USETW(req.wIndex, 0); 467 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN); 468 err = usbd_do_request(udev, &req, buffer); 469 if (err) { 470 goto done; 471 } 472#endif 473 } 474 if (sc->sc_flag & UVISOR_FLAG_PALM35) { 475 /* get the config number */ 476 DPRINTF("getting config info\n"); 477 req.bmRequestType = UT_READ; 478 req.bRequest = UR_GET_CONFIG; 479 USETW(req.wValue, 0); 480 USETW(req.wIndex, 0); 481 USETW(req.wLength, 1); 482 483 err = usbd_do_request(udev, NULL, &req, buffer); 484 if (err) { 485 goto done; 486 } 487 /* get the interface number */ 488 DPRINTF("get the interface number\n"); 489 req.bmRequestType = UT_READ_DEVICE; 490 req.bRequest = UR_GET_INTERFACE; 491 USETW(req.wValue, 0); 492 USETW(req.wIndex, 0); 493 USETW(req.wLength, 1); 494 err = usbd_do_request(udev, NULL, &req, buffer); 495 if (err) { 496 goto done; 497 } 498 } 499#if 0 500 uWord wAvail; 501 502 DPRINTF("getting available bytes\n"); 503 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 504 req.bRequest = UVISOR_REQUEST_BYTES_AVAILABLE; 505 USETW(req.wValue, 0); 506 USETW(req.wIndex, 5); 507 USETW(req.wLength, sizeof(wAvail)); 508 err = usbd_do_request(udev, NULL, &req, &wAvail); 509 if (err) { 510 goto done; 511 } 512 DPRINTF("avail=%d\n", UGETW(wAvail)); 513#endif 514 515 DPRINTF("done\n"); 516done: 517 return (err); 518} 519 520static void 521uvisor_cfg_open(struct ucom_softc *ucom) 522{ 523 return; 524} 525 526static void 527uvisor_cfg_close(struct ucom_softc *ucom) 528{ 529 struct uvisor_softc *sc = ucom->sc_parent; 530 uint8_t buffer[UVISOR_CONNECTION_INFO_SIZE]; 531 struct usb_device_request req; 532 usb_error_t err; 533 534 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; /* XXX read? */ 535 req.bRequest = UVISOR_CLOSE_NOTIFICATION; 536 USETW(req.wValue, 0); 537 USETW(req.wIndex, 0); 538 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE); 539 540 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 541 &req, buffer, 0, 1000); 542 if (err) { 543 DPRINTFN(0, "close notification failed, error=%s\n", 544 usbd_errstr(err)); 545 } 546} 547 548static void 549uvisor_start_read(struct ucom_softc *ucom) 550{ 551 struct uvisor_softc *sc = ucom->sc_parent; 552 553 usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_RD]); 554} 555 556static void 557uvisor_stop_read(struct ucom_softc *ucom) 558{ 559 struct uvisor_softc *sc = ucom->sc_parent; 560 561 usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_RD]); 562} 563 564static void 565uvisor_start_write(struct ucom_softc *ucom) 566{ 567 struct uvisor_softc *sc = ucom->sc_parent; 568 569 usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_WR]); 570} 571 572static void 573uvisor_stop_write(struct ucom_softc *ucom) 574{ 575 struct uvisor_softc *sc = ucom->sc_parent; 576 577 usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_WR]); 578} 579 580static void 581uvisor_write_callback(struct usb_xfer *xfer, usb_error_t error) 582{ 583 struct uvisor_softc *sc = usbd_xfer_softc(xfer); 584 struct usb_page_cache *pc; 585 uint32_t actlen; 586 uint8_t x; 587 588 switch (USB_GET_STATE(xfer)) { 589 case USB_ST_SETUP: 590 case USB_ST_TRANSFERRED: 591tr_setup: 592 for (x = 0; x != UVISOROFRAMES; x++) { 593 594 usbd_xfer_set_frame_offset(xfer, 595 x * UVISOROBUFSIZE, x); 596 597 pc = usbd_xfer_get_frame(xfer, x); 598 if (ucom_get_data(&sc->sc_ucom, pc, 0, 599 UVISOROBUFSIZE, &actlen)) { 600 usbd_xfer_set_frame_len(xfer, x, actlen); 601 } else { 602 break; 603 } 604 } 605 /* check for data */ 606 if (x != 0) { 607 usbd_xfer_set_frames(xfer, x); 608 usbd_transfer_submit(xfer); 609 } 610 break; 611 612 default: /* Error */ 613 if (error != USB_ERR_CANCELLED) { 614 /* try to clear stall first */ 615 usbd_xfer_set_stall(xfer); 616 goto tr_setup; 617 } 618 break; 619 } 620} 621 622static void 623uvisor_read_callback(struct usb_xfer *xfer, usb_error_t error) 624{ 625 struct uvisor_softc *sc = usbd_xfer_softc(xfer); 626 struct usb_page_cache *pc; 627 int actlen; 628 629 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 630 631 switch (USB_GET_STATE(xfer)) { 632 case USB_ST_TRANSFERRED: 633 pc = usbd_xfer_get_frame(xfer, 0); 634 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 635 636 case USB_ST_SETUP: 637tr_setup: 638 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 639 usbd_transfer_submit(xfer); 640 return; 641 642 default: /* Error */ 643 if (error != USB_ERR_CANCELLED) { 644 /* try to clear stall first */ 645 usbd_xfer_set_stall(xfer); 646 goto tr_setup; 647 } 648 return; 649 } 650} 651