1 /* $NetBSD: uvisor.c,v 1.9 2001/01/23 14:04:14 augustss Exp $ */ 2 3 /* Also already merged from NetBSD: 4 * $NetBSD: uvisor.c,v 1.12 2001/11/13 06:24:57 lukem Exp $ 5 * $NetBSD: uvisor.c,v 1.13 2002/02/11 15:11:49 augustss Exp $ 6 * $NetBSD: uvisor.c,v 1.14 2002/02/27 23:00:03 augustss Exp $ 7 * $NetBSD: uvisor.c,v 1.15 2002/06/16 15:01:31 augustss Exp $ 8 * $NetBSD: uvisor.c,v 1.16 2002/07/11 21:14:36 augustss Exp $ 9 * $NetBSD: uvisor.c,v 1.17 2002/08/13 11:38:15 augustss Exp $ 10 * $NetBSD: uvisor.c,v 1.18 2003/02/05 00:50:14 augustss Exp $ 11 * $NetBSD: uvisor.c,v 1.19 2003/02/07 18:12:37 augustss Exp $ 12 * $NetBSD: uvisor.c,v 1.20 2003/04/11 01:30:10 simonb Exp $ 13 */ 14 15 /*- 16 * SPDX-License-Identifier: BSD-2-Clause 17 * 18 * Copyright (c) 2000 The NetBSD Foundation, Inc. 19 * All rights reserved. 20 * 21 * This code is derived from software contributed to The NetBSD Foundation 22 * by Lennart Augustsson (lennart@augustsson.net) at 23 * Carlstedt Research & Technology. 24 * 25 * Redistribution and use in source and binary forms, with or without 26 * modification, are permitted provided that the following conditions 27 * are met: 28 * 1. Redistributions of source code must retain the above copyright 29 * notice, this list of conditions and the following disclaimer. 30 * 2. Redistributions in binary form must reproduce the above copyright 31 * notice, this list of conditions and the following disclaimer in the 32 * documentation and/or other materials provided with the distribution. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 35 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 36 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 37 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 38 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 39 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 40 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 41 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 42 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 43 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 44 * POSSIBILITY OF SUCH DAMAGE. 45 */ 46 47 /* 48 * Handspring Visor (Palmpilot compatible PDA) driver 49 */ 50 51 #include <sys/stdint.h> 52 #include <sys/stddef.h> 53 #include <sys/param.h> 54 #include <sys/queue.h> 55 #include <sys/types.h> 56 #include <sys/systm.h> 57 #include <sys/kernel.h> 58 #include <sys/bus.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 82 static int uvisor_debug = 0; 83 84 static SYSCTL_NODE(_hw_usb, OID_AUTO, uvisor, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 85 "USB uvisor"); 86 SYSCTL_INT(_hw_usb_uvisor, OID_AUTO, debug, CTLFLAG_RWTUN, 87 &uvisor_debug, 0, "Debug level"); 88 #endif 89 90 #define UVISOR_CONFIG_INDEX 0 91 #define UVISOR_IFACE_INDEX 0 92 93 /* 94 * The following buffer sizes are hardcoded due to the way the Palm 95 * firmware works. It looks like the device is not short terminating 96 * the data transferred. 97 */ 98 #define UVISORIBUFSIZE 0 /* Use wMaxPacketSize */ 99 #define UVISOROBUFSIZE 32 /* bytes */ 100 #define UVISOROFRAMES 32 /* units */ 101 102 /* From the Linux driver */ 103 /* 104 * UVISOR_REQUEST_BYTES_AVAILABLE asks the visor for the number of bytes that 105 * are available to be transferred to the host for the specified endpoint. 106 * Currently this is not used, and always returns 0x0001 107 */ 108 #define UVISOR_REQUEST_BYTES_AVAILABLE 0x01 109 110 /* 111 * UVISOR_CLOSE_NOTIFICATION is set to the device to notify it that the host 112 * is now closing the pipe. An empty packet is sent in response. 113 */ 114 #define UVISOR_CLOSE_NOTIFICATION 0x02 115 116 /* 117 * UVISOR_GET_CONNECTION_INFORMATION is sent by the host during enumeration to 118 * get the endpoints used by the connection. 119 */ 120 #define UVISOR_GET_CONNECTION_INFORMATION 0x03 121 122 /* 123 * UVISOR_GET_CONNECTION_INFORMATION returns data in the following format 124 */ 125 #define UVISOR_MAX_CONN 8 126 struct uvisor_connection_info { 127 uWord num_ports; 128 struct { 129 uByte port_function_id; 130 uByte port; 131 } __packed connections[UVISOR_MAX_CONN]; 132 } __packed; 133 134 #define UVISOR_CONNECTION_INFO_SIZE 18 135 136 /* struct uvisor_connection_info.connection[x].port defines: */ 137 #define UVISOR_ENDPOINT_1 0x01 138 #define UVISOR_ENDPOINT_2 0x02 139 140 /* struct uvisor_connection_info.connection[x].port_function_id defines: */ 141 #define UVISOR_FUNCTION_GENERIC 0x00 142 #define UVISOR_FUNCTION_DEBUGGER 0x01 143 #define UVISOR_FUNCTION_HOTSYNC 0x02 144 #define UVISOR_FUNCTION_CONSOLE 0x03 145 #define UVISOR_FUNCTION_REMOTE_FILE_SYS 0x04 146 147 /* 148 * Unknown PalmOS stuff. 149 */ 150 #define UVISOR_GET_PALM_INFORMATION 0x04 151 #define UVISOR_GET_PALM_INFORMATION_LEN 0x44 152 153 struct uvisor_palm_connection_info { 154 uByte num_ports; 155 uByte endpoint_numbers_different; 156 uWord reserved1; 157 struct { 158 uDWord port_function_id; 159 uByte port; 160 uByte end_point_info; 161 uWord reserved; 162 } __packed connections[UVISOR_MAX_CONN]; 163 } __packed; 164 165 enum { 166 UVISOR_BULK_DT_WR, 167 UVISOR_BULK_DT_RD, 168 UVISOR_N_TRANSFER, 169 }; 170 171 struct uvisor_softc { 172 struct ucom_super_softc sc_super_ucom; 173 struct ucom_softc sc_ucom; 174 175 struct usb_xfer *sc_xfer[UVISOR_N_TRANSFER]; 176 struct usb_device *sc_udev; 177 struct mtx sc_mtx; 178 179 uint16_t sc_flag; 180 #define UVISOR_FLAG_PALM4 0x0001 181 #define UVISOR_FLAG_VISOR 0x0002 182 #define UVISOR_FLAG_PALM35 0x0004 183 #define UVISOR_FLAG_SEND_NOTIFY 0x0008 184 185 uint8_t sc_iface_no; 186 uint8_t sc_iface_index; 187 }; 188 189 /* prototypes */ 190 191 static device_probe_t uvisor_probe; 192 static device_attach_t uvisor_attach; 193 static device_detach_t uvisor_detach; 194 static void uvisor_free_softc(struct uvisor_softc *); 195 196 static usb_callback_t uvisor_write_callback; 197 static usb_callback_t uvisor_read_callback; 198 199 static usb_error_t uvisor_init(struct uvisor_softc *, struct usb_device *, 200 struct usb_config *); 201 static void uvisor_free(struct ucom_softc *); 202 static void uvisor_cfg_open(struct ucom_softc *); 203 static void uvisor_cfg_close(struct ucom_softc *); 204 static void uvisor_start_read(struct ucom_softc *); 205 static void uvisor_stop_read(struct ucom_softc *); 206 static void uvisor_start_write(struct ucom_softc *); 207 static void uvisor_stop_write(struct ucom_softc *); 208 209 static const struct usb_config uvisor_config[UVISOR_N_TRANSFER] = { 210 [UVISOR_BULK_DT_WR] = { 211 .type = UE_BULK, 212 .endpoint = UE_ADDR_ANY, 213 .direction = UE_DIR_OUT, 214 .bufsize = UVISOROBUFSIZE * UVISOROFRAMES, 215 .frames = UVISOROFRAMES, 216 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 217 .callback = &uvisor_write_callback, 218 }, 219 220 [UVISOR_BULK_DT_RD] = { 221 .type = UE_BULK, 222 .endpoint = UE_ADDR_ANY, 223 .direction = UE_DIR_IN, 224 .bufsize = UVISORIBUFSIZE, 225 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 226 .callback = &uvisor_read_callback, 227 }, 228 }; 229 230 static const struct ucom_callback uvisor_callback = { 231 .ucom_cfg_open = &uvisor_cfg_open, 232 .ucom_cfg_close = &uvisor_cfg_close, 233 .ucom_start_read = &uvisor_start_read, 234 .ucom_stop_read = &uvisor_stop_read, 235 .ucom_start_write = &uvisor_start_write, 236 .ucom_stop_write = &uvisor_stop_write, 237 .ucom_free = &uvisor_free, 238 }; 239 240 static device_method_t uvisor_methods[] = { 241 DEVMETHOD(device_probe, uvisor_probe), 242 DEVMETHOD(device_attach, uvisor_attach), 243 DEVMETHOD(device_detach, uvisor_detach), 244 DEVMETHOD_END 245 }; 246 247 static driver_t uvisor_driver = { 248 .name = "uvisor", 249 .methods = uvisor_methods, 250 .size = sizeof(struct uvisor_softc), 251 }; 252 253 static const STRUCT_USB_HOST_ID uvisor_devs[] = { 254 #define UVISOR_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) } 255 UVISOR_DEV(ACEECA, MEZ1000, UVISOR_FLAG_PALM4), 256 UVISOR_DEV(ALPHASMART, DANA_SYNC, UVISOR_FLAG_PALM4), 257 UVISOR_DEV(GARMIN, IQUE_3600, UVISOR_FLAG_PALM4), 258 UVISOR_DEV(FOSSIL, WRISTPDA, UVISOR_FLAG_PALM4), 259 UVISOR_DEV(HANDSPRING, VISOR, UVISOR_FLAG_VISOR), 260 UVISOR_DEV(HANDSPRING, TREO, UVISOR_FLAG_PALM4), 261 UVISOR_DEV(HANDSPRING, TREO600, UVISOR_FLAG_PALM4), 262 UVISOR_DEV(PALM, M500, UVISOR_FLAG_PALM4), 263 UVISOR_DEV(PALM, M505, UVISOR_FLAG_PALM4), 264 UVISOR_DEV(PALM, M515, UVISOR_FLAG_PALM4), 265 UVISOR_DEV(PALM, I705, UVISOR_FLAG_PALM4), 266 UVISOR_DEV(PALM, M125, UVISOR_FLAG_PALM4), 267 UVISOR_DEV(PALM, M130, UVISOR_FLAG_PALM4), 268 UVISOR_DEV(PALM, TUNGSTEN_Z, UVISOR_FLAG_PALM4), 269 UVISOR_DEV(PALM, TUNGSTEN_T, UVISOR_FLAG_PALM4), 270 UVISOR_DEV(PALM, ZIRE, UVISOR_FLAG_PALM4), 271 UVISOR_DEV(PALM, ZIRE31, UVISOR_FLAG_PALM4), 272 UVISOR_DEV(SAMSUNG, I500, UVISOR_FLAG_PALM4), 273 UVISOR_DEV(SONY, CLIE_40, 0), 274 UVISOR_DEV(SONY, CLIE_41, 0), 275 UVISOR_DEV(SONY, CLIE_S360, UVISOR_FLAG_PALM4), 276 UVISOR_DEV(SONY, CLIE_NX60, UVISOR_FLAG_PALM4), 277 UVISOR_DEV(SONY, CLIE_35, UVISOR_FLAG_PALM35), 278 /* UVISOR_DEV(SONY, CLIE_25, UVISOR_FLAG_PALM4 ), */ 279 UVISOR_DEV(SONY, CLIE_TJ37, UVISOR_FLAG_PALM4), 280 /* UVISOR_DEV(SONY, CLIE_TH55, UVISOR_FLAG_PALM4 ), See PR 80935 */ 281 UVISOR_DEV(TAPWAVE, ZODIAC, UVISOR_FLAG_PALM4), 282 #undef UVISOR_DEV 283 }; 284 285 DRIVER_MODULE(uvisor, uhub, uvisor_driver, NULL, NULL); 286 MODULE_DEPEND(uvisor, ucom, 1, 1, 1); 287 MODULE_DEPEND(uvisor, usb, 1, 1, 1); 288 MODULE_VERSION(uvisor, 1); 289 USB_PNP_HOST_INFO(uvisor_devs); 290 291 static int 292 uvisor_probe(device_t dev) 293 { 294 struct usb_attach_arg *uaa = device_get_ivars(dev); 295 296 if (uaa->usb_mode != USB_MODE_HOST) { 297 return (ENXIO); 298 } 299 if (uaa->info.bConfigIndex != UVISOR_CONFIG_INDEX) { 300 return (ENXIO); 301 } 302 if (uaa->info.bIfaceIndex != UVISOR_IFACE_INDEX) { 303 return (ENXIO); 304 } 305 return (usbd_lookup_id_by_uaa(uvisor_devs, sizeof(uvisor_devs), uaa)); 306 } 307 308 static int 309 uvisor_attach(device_t dev) 310 { 311 struct usb_attach_arg *uaa = device_get_ivars(dev); 312 struct uvisor_softc *sc = device_get_softc(dev); 313 struct usb_config uvisor_config_copy[UVISOR_N_TRANSFER]; 314 int error; 315 316 DPRINTF("sc=%p\n", sc); 317 memcpy(uvisor_config_copy, uvisor_config, 318 sizeof(uvisor_config_copy)); 319 320 device_set_usb_desc(dev); 321 322 mtx_init(&sc->sc_mtx, "uvisor", NULL, MTX_DEF); 323 ucom_ref(&sc->sc_super_ucom); 324 325 sc->sc_udev = uaa->device; 326 327 /* configure the device */ 328 329 sc->sc_flag = USB_GET_DRIVER_INFO(uaa); 330 sc->sc_iface_no = uaa->info.bIfaceNum; 331 sc->sc_iface_index = UVISOR_IFACE_INDEX; 332 333 error = uvisor_init(sc, uaa->device, uvisor_config_copy); 334 335 if (error) { 336 DPRINTF("init failed, error=%s\n", 337 usbd_errstr(error)); 338 goto detach; 339 } 340 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 341 sc->sc_xfer, uvisor_config_copy, UVISOR_N_TRANSFER, 342 sc, &sc->sc_mtx); 343 if (error) { 344 DPRINTF("could not allocate all pipes\n"); 345 goto detach; 346 } 347 348 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 349 &uvisor_callback, &sc->sc_mtx); 350 if (error) { 351 DPRINTF("ucom_attach failed\n"); 352 goto detach; 353 } 354 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 355 356 return (0); 357 358 detach: 359 uvisor_detach(dev); 360 return (ENXIO); 361 } 362 363 static int 364 uvisor_detach(device_t dev) 365 { 366 struct uvisor_softc *sc = device_get_softc(dev); 367 368 DPRINTF("sc=%p\n", sc); 369 370 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 371 usbd_transfer_unsetup(sc->sc_xfer, UVISOR_N_TRANSFER); 372 373 device_claim_softc(dev); 374 375 uvisor_free_softc(sc); 376 377 return (0); 378 } 379 380 UCOM_UNLOAD_DRAIN(uvisor); 381 382 static void 383 uvisor_free_softc(struct uvisor_softc *sc) 384 { 385 if (ucom_unref(&sc->sc_super_ucom)) { 386 mtx_destroy(&sc->sc_mtx); 387 device_free_softc(sc); 388 } 389 } 390 391 static void 392 uvisor_free(struct ucom_softc *ucom) 393 { 394 uvisor_free_softc(ucom->sc_parent); 395 } 396 397 static usb_error_t 398 uvisor_init(struct uvisor_softc *sc, struct usb_device *udev, struct usb_config *config) 399 { 400 usb_error_t err = 0; 401 struct usb_device_request req; 402 struct uvisor_connection_info coninfo; 403 struct uvisor_palm_connection_info pconinfo; 404 uint16_t actlen; 405 uint8_t buffer[256]; 406 407 if (sc->sc_flag & UVISOR_FLAG_VISOR) { 408 DPRINTF("getting connection info\n"); 409 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 410 req.bRequest = UVISOR_GET_CONNECTION_INFORMATION; 411 USETW(req.wValue, 0); 412 USETW(req.wIndex, 0); 413 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE); 414 err = usbd_do_request_flags(udev, NULL, 415 &req, &coninfo, USB_SHORT_XFER_OK, 416 &actlen, USB_DEFAULT_TIMEOUT); 417 418 if (err) { 419 goto done; 420 } 421 } 422 #ifdef USB_DEBUG 423 if (sc->sc_flag & UVISOR_FLAG_VISOR) { 424 uint16_t i, np; 425 const char *desc; 426 427 np = UGETW(coninfo.num_ports); 428 if (np > UVISOR_MAX_CONN) { 429 np = UVISOR_MAX_CONN; 430 } 431 DPRINTF("Number of ports: %d\n", np); 432 433 for (i = 0; i < np; ++i) { 434 switch (coninfo.connections[i].port_function_id) { 435 case UVISOR_FUNCTION_GENERIC: 436 desc = "Generic"; 437 break; 438 case UVISOR_FUNCTION_DEBUGGER: 439 desc = "Debugger"; 440 break; 441 case UVISOR_FUNCTION_HOTSYNC: 442 desc = "HotSync"; 443 break; 444 case UVISOR_FUNCTION_REMOTE_FILE_SYS: 445 desc = "Remote File System"; 446 break; 447 default: 448 desc = "unknown"; 449 break; 450 } 451 DPRINTF("Port %d is for %s\n", 452 coninfo.connections[i].port, desc); 453 } 454 } 455 #endif 456 457 if (sc->sc_flag & UVISOR_FLAG_PALM4) { 458 uint8_t port; 459 460 /* Palm OS 4.0 Hack */ 461 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 462 req.bRequest = UVISOR_GET_PALM_INFORMATION; 463 USETW(req.wValue, 0); 464 USETW(req.wIndex, 0); 465 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN); 466 467 err = usbd_do_request_flags 468 (udev, NULL, &req, &pconinfo, USB_SHORT_XFER_OK, 469 &actlen, USB_DEFAULT_TIMEOUT); 470 471 if (err) { 472 goto done; 473 } 474 if (actlen < 12) { 475 DPRINTF("too little data\n"); 476 err = USB_ERR_INVAL; 477 goto done; 478 } 479 if (pconinfo.endpoint_numbers_different) { 480 port = pconinfo.connections[0].end_point_info; 481 config[0].endpoint = (port & 0xF); /* output */ 482 config[1].endpoint = (port >> 4); /* input */ 483 } else { 484 port = pconinfo.connections[0].port; 485 config[0].endpoint = (port & 0xF); /* output */ 486 config[1].endpoint = (port & 0xF); /* input */ 487 } 488 #if 0 489 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 490 req.bRequest = UVISOR_GET_PALM_INFORMATION; 491 USETW(req.wValue, 0); 492 USETW(req.wIndex, 0); 493 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN); 494 err = usbd_do_request(udev, &req, buffer); 495 if (err) { 496 goto done; 497 } 498 #endif 499 } 500 if (sc->sc_flag & UVISOR_FLAG_PALM35) { 501 /* get the config number */ 502 DPRINTF("getting config info\n"); 503 req.bmRequestType = UT_READ; 504 req.bRequest = UR_GET_CONFIG; 505 USETW(req.wValue, 0); 506 USETW(req.wIndex, 0); 507 USETW(req.wLength, 1); 508 509 err = usbd_do_request(udev, NULL, &req, buffer); 510 if (err) { 511 goto done; 512 } 513 /* get the interface number */ 514 DPRINTF("get the interface number\n"); 515 req.bmRequestType = UT_READ_DEVICE; 516 req.bRequest = UR_GET_INTERFACE; 517 USETW(req.wValue, 0); 518 USETW(req.wIndex, 0); 519 USETW(req.wLength, 1); 520 err = usbd_do_request(udev, NULL, &req, buffer); 521 if (err) { 522 goto done; 523 } 524 } 525 #if 0 526 uWord wAvail; 527 528 DPRINTF("getting available bytes\n"); 529 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 530 req.bRequest = UVISOR_REQUEST_BYTES_AVAILABLE; 531 USETW(req.wValue, 0); 532 USETW(req.wIndex, 5); 533 USETW(req.wLength, sizeof(wAvail)); 534 err = usbd_do_request(udev, NULL, &req, &wAvail); 535 if (err) { 536 goto done; 537 } 538 DPRINTF("avail=%d\n", UGETW(wAvail)); 539 #endif 540 541 DPRINTF("done\n"); 542 done: 543 return (err); 544 } 545 546 static void 547 uvisor_cfg_open(struct ucom_softc *ucom) 548 { 549 return; 550 } 551 552 static void 553 uvisor_cfg_close(struct ucom_softc *ucom) 554 { 555 struct uvisor_softc *sc = ucom->sc_parent; 556 uint8_t buffer[UVISOR_CONNECTION_INFO_SIZE]; 557 struct usb_device_request req; 558 usb_error_t err; 559 560 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; /* XXX read? */ 561 req.bRequest = UVISOR_CLOSE_NOTIFICATION; 562 USETW(req.wValue, 0); 563 USETW(req.wIndex, 0); 564 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE); 565 566 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 567 &req, buffer, 0, 1000); 568 if (err) { 569 DPRINTFN(0, "close notification failed, error=%s\n", 570 usbd_errstr(err)); 571 } 572 } 573 574 static void 575 uvisor_start_read(struct ucom_softc *ucom) 576 { 577 struct uvisor_softc *sc = ucom->sc_parent; 578 579 usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_RD]); 580 } 581 582 static void 583 uvisor_stop_read(struct ucom_softc *ucom) 584 { 585 struct uvisor_softc *sc = ucom->sc_parent; 586 587 usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_RD]); 588 } 589 590 static void 591 uvisor_start_write(struct ucom_softc *ucom) 592 { 593 struct uvisor_softc *sc = ucom->sc_parent; 594 595 usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_WR]); 596 } 597 598 static void 599 uvisor_stop_write(struct ucom_softc *ucom) 600 { 601 struct uvisor_softc *sc = ucom->sc_parent; 602 603 usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_WR]); 604 } 605 606 static void 607 uvisor_write_callback(struct usb_xfer *xfer, usb_error_t error) 608 { 609 struct uvisor_softc *sc = usbd_xfer_softc(xfer); 610 struct usb_page_cache *pc; 611 uint32_t actlen; 612 uint8_t x; 613 614 switch (USB_GET_STATE(xfer)) { 615 case USB_ST_SETUP: 616 case USB_ST_TRANSFERRED: 617 tr_setup: 618 for (x = 0; x != UVISOROFRAMES; x++) { 619 usbd_xfer_set_frame_offset(xfer, 620 x * UVISOROBUFSIZE, x); 621 622 pc = usbd_xfer_get_frame(xfer, x); 623 if (ucom_get_data(&sc->sc_ucom, pc, 0, 624 UVISOROBUFSIZE, &actlen)) { 625 usbd_xfer_set_frame_len(xfer, x, actlen); 626 } else { 627 break; 628 } 629 } 630 /* check for data */ 631 if (x != 0) { 632 usbd_xfer_set_frames(xfer, x); 633 usbd_transfer_submit(xfer); 634 } 635 break; 636 637 default: /* Error */ 638 if (error != USB_ERR_CANCELLED) { 639 /* try to clear stall first */ 640 usbd_xfer_set_stall(xfer); 641 goto tr_setup; 642 } 643 break; 644 } 645 } 646 647 static void 648 uvisor_read_callback(struct usb_xfer *xfer, usb_error_t error) 649 { 650 struct uvisor_softc *sc = usbd_xfer_softc(xfer); 651 struct usb_page_cache *pc; 652 int actlen; 653 654 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 655 656 switch (USB_GET_STATE(xfer)) { 657 case USB_ST_TRANSFERRED: 658 pc = usbd_xfer_get_frame(xfer, 0); 659 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 660 661 case USB_ST_SETUP: 662 tr_setup: 663 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 664 usbd_transfer_submit(xfer); 665 return; 666 667 default: /* Error */ 668 if (error != USB_ERR_CANCELLED) { 669 /* try to clear stall first */ 670 usbd_xfer_set_stall(xfer); 671 goto tr_setup; 672 } 673 return; 674 } 675 } 676