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 * 3. All advertising materials mentioning features or use of this software 33 * must display the following acknowledgement: 34 * This product includes software developed by the NetBSD 35 * Foundation, Inc. and its contributors. 36 * 4. Neither the name of The NetBSD Foundation nor the names of its 37 * contributors may be used to endorse or promote products derived 38 * from this software without specific prior written permission. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 41 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 42 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 44 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 45 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 46 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 47 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 48 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 50 * POSSIBILITY OF SUCH DAMAGE. 51 */ 52 53 /* 54 * Handspring Visor (Palmpilot compatible PDA) driver 55 */ 56 57 #include <sys/stdint.h> 58 #include <sys/stddef.h> 59 #include <sys/param.h> 60 #include <sys/queue.h> 61 #include <sys/types.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/bus.h> 65 #include <sys/linker_set.h> 66 #include <sys/module.h> 67 #include <sys/lock.h> 68 #include <sys/mutex.h> 69 #include <sys/condvar.h> 70 #include <sys/sysctl.h> 71 #include <sys/sx.h> 72 #include <sys/unistd.h> 73 #include <sys/callout.h> 74 #include <sys/malloc.h> 75 #include <sys/priv.h> 76 77 #include <dev/usb/usb.h> 78 #include <dev/usb/usbdi.h> 79 #include <dev/usb/usbdi_util.h> 80 #include "usbdevs.h" 81 82 #define USB_DEBUG_VAR uvisor_debug 83 #include <dev/usb/usb_debug.h> 84 #include <dev/usb/usb_process.h> 85 86 #include <dev/usb/serial/usb_serial.h> 87 88 #if USB_DEBUG 89 static int uvisor_debug = 0; 90 91 SYSCTL_NODE(_hw_usb, OID_AUTO, uvisor, CTLFLAG_RW, 0, "USB uvisor"); 92 SYSCTL_INT(_hw_usb_uvisor, OID_AUTO, debug, CTLFLAG_RW, 93 &uvisor_debug, 0, "Debug level"); 94 #endif 95 96 #define UVISOR_CONFIG_INDEX 0 97 #define UVISOR_IFACE_INDEX 0 98 99 /* 100 * The following buffer sizes are hardcoded due to the way the Palm 101 * firmware works. It looks like the device is not short terminating 102 * the data transferred. 103 */ 104 #define UVISORIBUFSIZE 0 /* Use wMaxPacketSize */ 105 #define UVISOROBUFSIZE 32 /* bytes */ 106 #define UVISOROFRAMES 32 /* units */ 107 108 /* From the Linux driver */ 109 /* 110 * UVISOR_REQUEST_BYTES_AVAILABLE asks the visor for the number of bytes that 111 * are available to be transfered to the host for the specified endpoint. 112 * Currently this is not used, and always returns 0x0001 113 */ 114 #define UVISOR_REQUEST_BYTES_AVAILABLE 0x01 115 116 /* 117 * UVISOR_CLOSE_NOTIFICATION is set to the device to notify it that the host 118 * is now closing the pipe. An empty packet is sent in response. 119 */ 120 #define UVISOR_CLOSE_NOTIFICATION 0x02 121 122 /* 123 * UVISOR_GET_CONNECTION_INFORMATION is sent by the host during enumeration to 124 * get the endpoints used by the connection. 125 */ 126 #define UVISOR_GET_CONNECTION_INFORMATION 0x03 127 128 /* 129 * UVISOR_GET_CONNECTION_INFORMATION returns data in the following format 130 */ 131 #define UVISOR_MAX_CONN 8 132 struct uvisor_connection_info { 133 uWord num_ports; 134 struct { 135 uByte port_function_id; 136 uByte port; 137 } __packed connections[UVISOR_MAX_CONN]; 138 } __packed; 139 140 #define UVISOR_CONNECTION_INFO_SIZE 18 141 142 /* struct uvisor_connection_info.connection[x].port defines: */ 143 #define UVISOR_ENDPOINT_1 0x01 144 #define UVISOR_ENDPOINT_2 0x02 145 146 /* struct uvisor_connection_info.connection[x].port_function_id defines: */ 147 #define UVISOR_FUNCTION_GENERIC 0x00 148 #define UVISOR_FUNCTION_DEBUGGER 0x01 149 #define UVISOR_FUNCTION_HOTSYNC 0x02 150 #define UVISOR_FUNCTION_CONSOLE 0x03 151 #define UVISOR_FUNCTION_REMOTE_FILE_SYS 0x04 152 153 /* 154 * Unknown PalmOS stuff. 155 */ 156 #define UVISOR_GET_PALM_INFORMATION 0x04 157 #define UVISOR_GET_PALM_INFORMATION_LEN 0x44 158 159 struct uvisor_palm_connection_info { 160 uByte num_ports; 161 uByte endpoint_numbers_different; 162 uWord reserved1; 163 struct { 164 uDWord port_function_id; 165 uByte port; 166 uByte end_point_info; 167 uWord reserved; 168 } __packed connections[UVISOR_MAX_CONN]; 169 } __packed; 170 171 enum { 172 UVISOR_BULK_DT_WR, 173 UVISOR_BULK_DT_RD, 174 UVISOR_N_TRANSFER, 175 }; 176 177 struct uvisor_softc { 178 struct ucom_super_softc sc_super_ucom; 179 struct ucom_softc sc_ucom; 180 181 struct usb_xfer *sc_xfer[UVISOR_N_TRANSFER]; 182 struct usb_device *sc_udev; 183 struct mtx sc_mtx; 184 185 uint16_t sc_flag; 186 #define UVISOR_FLAG_PALM4 0x0001 187 #define UVISOR_FLAG_VISOR 0x0002 188 #define UVISOR_FLAG_PALM35 0x0004 189 #define UVISOR_FLAG_SEND_NOTIFY 0x0008 190 191 uint8_t sc_iface_no; 192 uint8_t sc_iface_index; 193 }; 194 195 /* prototypes */ 196 197 static device_probe_t uvisor_probe; 198 static device_attach_t uvisor_attach; 199 static device_detach_t uvisor_detach; 200 201 static usb_callback_t uvisor_write_callback; 202 static usb_callback_t uvisor_read_callback; 203 204 static usb_error_t uvisor_init(struct uvisor_softc *, struct usb_device *, 205 struct usb_config *); 206 static void uvisor_cfg_open(struct ucom_softc *); 207 static void uvisor_cfg_close(struct ucom_softc *); 208 static void uvisor_start_read(struct ucom_softc *); 209 static void uvisor_stop_read(struct ucom_softc *); 210 static void uvisor_start_write(struct ucom_softc *); 211 static void uvisor_stop_write(struct ucom_softc *); 212 213 static const struct usb_config uvisor_config[UVISOR_N_TRANSFER] = { 214 215 [UVISOR_BULK_DT_WR] = { 216 .type = UE_BULK, 217 .endpoint = UE_ADDR_ANY, 218 .direction = UE_DIR_OUT, 219 .bufsize = UVISOROBUFSIZE * UVISOROFRAMES, 220 .frames = UVISOROFRAMES, 221 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 222 .callback = &uvisor_write_callback, 223 }, 224 225 [UVISOR_BULK_DT_RD] = { 226 .type = UE_BULK, 227 .endpoint = UE_ADDR_ANY, 228 .direction = UE_DIR_IN, 229 .bufsize = UVISORIBUFSIZE, 230 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 231 .callback = &uvisor_read_callback, 232 }, 233 }; 234 235 static const struct ucom_callback uvisor_callback = { 236 .ucom_cfg_open = &uvisor_cfg_open, 237 .ucom_cfg_close = &uvisor_cfg_close, 238 .ucom_start_read = &uvisor_start_read, 239 .ucom_stop_read = &uvisor_stop_read, 240 .ucom_start_write = &uvisor_start_write, 241 .ucom_stop_write = &uvisor_stop_write, 242 }; 243 244 static device_method_t uvisor_methods[] = { 245 DEVMETHOD(device_probe, uvisor_probe), 246 DEVMETHOD(device_attach, uvisor_attach), 247 DEVMETHOD(device_detach, uvisor_detach), 248 {0, 0} 249 }; 250 251 static devclass_t uvisor_devclass; 252 253 static driver_t uvisor_driver = { 254 .name = "uvisor", 255 .methods = uvisor_methods, 256 .size = sizeof(struct uvisor_softc), 257 }; 258 259 DRIVER_MODULE(uvisor, uhub, uvisor_driver, uvisor_devclass, NULL, 0); 260 MODULE_DEPEND(uvisor, ucom, 1, 1, 1); 261 MODULE_DEPEND(uvisor, usb, 1, 1, 1); 262 263 static const struct usb_device_id uvisor_devs[] = { 264 #define UVISOR_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) } 265 UVISOR_DEV(ACEECA, MEZ1000, UVISOR_FLAG_PALM4), 266 UVISOR_DEV(GARMIN, IQUE_3600, UVISOR_FLAG_PALM4), 267 UVISOR_DEV(FOSSIL, WRISTPDA, UVISOR_FLAG_PALM4), 268 UVISOR_DEV(HANDSPRING, VISOR, UVISOR_FLAG_VISOR), 269 UVISOR_DEV(HANDSPRING, TREO, UVISOR_FLAG_PALM4), 270 UVISOR_DEV(HANDSPRING, TREO600, UVISOR_FLAG_PALM4), 271 UVISOR_DEV(PALM, M500, UVISOR_FLAG_PALM4), 272 UVISOR_DEV(PALM, M505, UVISOR_FLAG_PALM4), 273 UVISOR_DEV(PALM, M515, UVISOR_FLAG_PALM4), 274 UVISOR_DEV(PALM, I705, UVISOR_FLAG_PALM4), 275 UVISOR_DEV(PALM, M125, UVISOR_FLAG_PALM4), 276 UVISOR_DEV(PALM, M130, UVISOR_FLAG_PALM4), 277 UVISOR_DEV(PALM, TUNGSTEN_Z, UVISOR_FLAG_PALM4), 278 UVISOR_DEV(PALM, TUNGSTEN_T, UVISOR_FLAG_PALM4), 279 UVISOR_DEV(PALM, ZIRE, UVISOR_FLAG_PALM4), 280 UVISOR_DEV(PALM, ZIRE31, UVISOR_FLAG_PALM4), 281 UVISOR_DEV(SAMSUNG, I500, UVISOR_FLAG_PALM4), 282 UVISOR_DEV(SONY, CLIE_40, 0), 283 UVISOR_DEV(SONY, CLIE_41, 0), 284 UVISOR_DEV(SONY, CLIE_S360, UVISOR_FLAG_PALM4), 285 UVISOR_DEV(SONY, CLIE_NX60, UVISOR_FLAG_PALM4), 286 UVISOR_DEV(SONY, CLIE_35, UVISOR_FLAG_PALM35), 287 /* UVISOR_DEV(SONY, CLIE_25, UVISOR_FLAG_PALM4 ), */ 288 UVISOR_DEV(SONY, CLIE_TJ37, UVISOR_FLAG_PALM4), 289 /* UVISOR_DEV(SONY, CLIE_TH55, UVISOR_FLAG_PALM4 ), See PR 80935 */ 290 UVISOR_DEV(TAPWAVE, ZODIAC, UVISOR_FLAG_PALM4), 291 #undef UVISOR_DEV 292 }; 293 294 static int 295 uvisor_probe(device_t dev) 296 { 297 struct usb_attach_arg *uaa = device_get_ivars(dev); 298 299 if (uaa->usb_mode != USB_MODE_HOST) { 300 return (ENXIO); 301 } 302 if (uaa->info.bConfigIndex != UVISOR_CONFIG_INDEX) { 303 return (ENXIO); 304 } 305 if (uaa->info.bIfaceIndex != UVISOR_IFACE_INDEX) { 306 return (ENXIO); 307 } 308 return (usbd_lookup_id_by_uaa(uvisor_devs, sizeof(uvisor_devs), uaa)); 309 } 310 311 static int 312 uvisor_attach(device_t dev) 313 { 314 struct usb_attach_arg *uaa = device_get_ivars(dev); 315 struct uvisor_softc *sc = device_get_softc(dev); 316 struct usb_config uvisor_config_copy[UVISOR_N_TRANSFER]; 317 int error; 318 319 DPRINTF("sc=%p\n", sc); 320 bcopy(uvisor_config, uvisor_config_copy, 321 sizeof(uvisor_config_copy)); 322 device_set_usb_desc(dev); 323 324 mtx_init(&sc->sc_mtx, "uvisor", NULL, MTX_DEF); 325 326 sc->sc_udev = uaa->device; 327 328 /* configure the device */ 329 330 sc->sc_flag = USB_GET_DRIVER_INFO(uaa); 331 sc->sc_iface_no = uaa->info.bIfaceNum; 332 sc->sc_iface_index = UVISOR_IFACE_INDEX; 333 334 error = uvisor_init(sc, uaa->device, uvisor_config_copy); 335 336 if (error) { 337 DPRINTF("init failed, error=%s\n", 338 usbd_errstr(error)); 339 goto detach; 340 } 341 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 342 sc->sc_xfer, uvisor_config_copy, UVISOR_N_TRANSFER, 343 sc, &sc->sc_mtx); 344 if (error) { 345 DPRINTF("could not allocate all pipes\n"); 346 goto detach; 347 } 348 /* clear stall at first run */ 349 mtx_lock(&sc->sc_mtx); 350 usbd_xfer_set_stall(sc->sc_xfer[UVISOR_BULK_DT_WR]); 351 usbd_xfer_set_stall(sc->sc_xfer[UVISOR_BULK_DT_RD]); 352 mtx_unlock(&sc->sc_mtx); 353 354 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 355 &uvisor_callback, &sc->sc_mtx); 356 if (error) { 357 DPRINTF("ucom_attach failed\n"); 358 goto detach; 359 } 360 return (0); 361 362 detach: 363 uvisor_detach(dev); 364 return (ENXIO); 365 } 366 367 static int 368 uvisor_detach(device_t dev) 369 { 370 struct uvisor_softc *sc = device_get_softc(dev); 371 372 DPRINTF("sc=%p\n", sc); 373 374 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 375 usbd_transfer_unsetup(sc->sc_xfer, UVISOR_N_TRANSFER); 376 mtx_destroy(&sc->sc_mtx); 377 378 return (0); 379 } 380 381 static usb_error_t 382 uvisor_init(struct uvisor_softc *sc, struct usb_device *udev, struct usb_config *config) 383 { 384 usb_error_t err = 0; 385 struct usb_device_request req; 386 struct uvisor_connection_info coninfo; 387 struct uvisor_palm_connection_info pconinfo; 388 uint16_t actlen; 389 uint8_t buffer[256]; 390 391 if (sc->sc_flag & UVISOR_FLAG_VISOR) { 392 DPRINTF("getting connection info\n"); 393 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 394 req.bRequest = UVISOR_GET_CONNECTION_INFORMATION; 395 USETW(req.wValue, 0); 396 USETW(req.wIndex, 0); 397 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE); 398 err = usbd_do_request_flags(udev, NULL, 399 &req, &coninfo, USB_SHORT_XFER_OK, 400 &actlen, USB_DEFAULT_TIMEOUT); 401 402 if (err) { 403 goto done; 404 } 405 } 406 #if USB_DEBUG 407 if (sc->sc_flag & UVISOR_FLAG_VISOR) { 408 uint16_t i, np; 409 const char *desc; 410 411 np = UGETW(coninfo.num_ports); 412 if (np > UVISOR_MAX_CONN) { 413 np = UVISOR_MAX_CONN; 414 } 415 DPRINTF("Number of ports: %d\n", np); 416 417 for (i = 0; i < np; ++i) { 418 switch (coninfo.connections[i].port_function_id) { 419 case UVISOR_FUNCTION_GENERIC: 420 desc = "Generic"; 421 break; 422 case UVISOR_FUNCTION_DEBUGGER: 423 desc = "Debugger"; 424 break; 425 case UVISOR_FUNCTION_HOTSYNC: 426 desc = "HotSync"; 427 break; 428 case UVISOR_FUNCTION_REMOTE_FILE_SYS: 429 desc = "Remote File System"; 430 break; 431 default: 432 desc = "unknown"; 433 break; 434 } 435 DPRINTF("Port %d is for %s\n", 436 coninfo.connections[i].port, desc); 437 } 438 } 439 #endif 440 441 if (sc->sc_flag & UVISOR_FLAG_PALM4) { 442 uint8_t port; 443 444 /* Palm OS 4.0 Hack */ 445 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 446 req.bRequest = UVISOR_GET_PALM_INFORMATION; 447 USETW(req.wValue, 0); 448 USETW(req.wIndex, 0); 449 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN); 450 451 err = usbd_do_request_flags 452 (udev, NULL, &req, &pconinfo, USB_SHORT_XFER_OK, 453 &actlen, USB_DEFAULT_TIMEOUT); 454 455 if (err) { 456 goto done; 457 } 458 if (actlen < 12) { 459 DPRINTF("too little data\n"); 460 err = USB_ERR_INVAL; 461 goto done; 462 } 463 if (pconinfo.endpoint_numbers_different) { 464 port = pconinfo.connections[0].end_point_info; 465 config[0].endpoint = (port & 0xF); /* output */ 466 config[1].endpoint = (port >> 4); /* input */ 467 } else { 468 port = pconinfo.connections[0].port; 469 config[0].endpoint = (port & 0xF); /* output */ 470 config[1].endpoint = (port & 0xF); /* input */ 471 } 472 #if 0 473 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 474 req.bRequest = UVISOR_GET_PALM_INFORMATION; 475 USETW(req.wValue, 0); 476 USETW(req.wIndex, 0); 477 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN); 478 err = usbd_do_request(udev, &req, buffer); 479 if (err) { 480 goto done; 481 } 482 #endif 483 } 484 if (sc->sc_flag & UVISOR_FLAG_PALM35) { 485 /* get the config number */ 486 DPRINTF("getting config info\n"); 487 req.bmRequestType = UT_READ; 488 req.bRequest = UR_GET_CONFIG; 489 USETW(req.wValue, 0); 490 USETW(req.wIndex, 0); 491 USETW(req.wLength, 1); 492 493 err = usbd_do_request(udev, NULL, &req, buffer); 494 if (err) { 495 goto done; 496 } 497 /* get the interface number */ 498 DPRINTF("get the interface number\n"); 499 req.bmRequestType = UT_READ_DEVICE; 500 req.bRequest = UR_GET_INTERFACE; 501 USETW(req.wValue, 0); 502 USETW(req.wIndex, 0); 503 USETW(req.wLength, 1); 504 err = usbd_do_request(udev, NULL, &req, buffer); 505 if (err) { 506 goto done; 507 } 508 } 509 #if 0 510 uWord wAvail; 511 512 DPRINTF("getting available bytes\n"); 513 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; 514 req.bRequest = UVISOR_REQUEST_BYTES_AVAILABLE; 515 USETW(req.wValue, 0); 516 USETW(req.wIndex, 5); 517 USETW(req.wLength, sizeof(wAvail)); 518 err = usbd_do_request(udev, NULL, &req, &wAvail); 519 if (err) { 520 goto done; 521 } 522 DPRINTF("avail=%d\n", UGETW(wAvail)); 523 #endif 524 525 DPRINTF("done\n"); 526 done: 527 return (err); 528 } 529 530 static void 531 uvisor_cfg_open(struct ucom_softc *ucom) 532 { 533 return; 534 } 535 536 static void 537 uvisor_cfg_close(struct ucom_softc *ucom) 538 { 539 struct uvisor_softc *sc = ucom->sc_parent; 540 uint8_t buffer[UVISOR_CONNECTION_INFO_SIZE]; 541 struct usb_device_request req; 542 usb_error_t err; 543 544 req.bmRequestType = UT_READ_VENDOR_ENDPOINT; /* XXX read? */ 545 req.bRequest = UVISOR_CLOSE_NOTIFICATION; 546 USETW(req.wValue, 0); 547 USETW(req.wIndex, 0); 548 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE); 549 550 err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 551 &req, buffer, 0, 1000); 552 if (err) { 553 DPRINTFN(0, "close notification failed, error=%s\n", 554 usbd_errstr(err)); 555 } 556 } 557 558 static void 559 uvisor_start_read(struct ucom_softc *ucom) 560 { 561 struct uvisor_softc *sc = ucom->sc_parent; 562 563 usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_RD]); 564 } 565 566 static void 567 uvisor_stop_read(struct ucom_softc *ucom) 568 { 569 struct uvisor_softc *sc = ucom->sc_parent; 570 571 usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_RD]); 572 } 573 574 static void 575 uvisor_start_write(struct ucom_softc *ucom) 576 { 577 struct uvisor_softc *sc = ucom->sc_parent; 578 579 usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_WR]); 580 } 581 582 static void 583 uvisor_stop_write(struct ucom_softc *ucom) 584 { 585 struct uvisor_softc *sc = ucom->sc_parent; 586 587 usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_WR]); 588 } 589 590 static void 591 uvisor_write_callback(struct usb_xfer *xfer, usb_error_t error) 592 { 593 struct uvisor_softc *sc = usbd_xfer_softc(xfer); 594 struct usb_page_cache *pc; 595 uint32_t actlen; 596 uint8_t x; 597 598 switch (USB_GET_STATE(xfer)) { 599 case USB_ST_SETUP: 600 case USB_ST_TRANSFERRED: 601 tr_setup: 602 for (x = 0; x != UVISOROFRAMES; x++) { 603 604 usbd_xfer_set_frame_offset(xfer, 605 x * UVISOROBUFSIZE, x); 606 607 pc = usbd_xfer_get_frame(xfer, x); 608 if (ucom_get_data(&sc->sc_ucom, pc, 0, 609 UVISOROBUFSIZE, &actlen)) { 610 usbd_xfer_set_frame_len(xfer, x, actlen); 611 } else { 612 break; 613 } 614 } 615 /* check for data */ 616 if (x != 0) { 617 usbd_xfer_set_frames(xfer, x); 618 usbd_transfer_submit(xfer); 619 } 620 break; 621 622 default: /* Error */ 623 if (error != USB_ERR_CANCELLED) { 624 /* try to clear stall first */ 625 usbd_xfer_set_stall(xfer); 626 goto tr_setup; 627 } 628 break; 629 } 630 } 631 632 static void 633 uvisor_read_callback(struct usb_xfer *xfer, usb_error_t error) 634 { 635 struct uvisor_softc *sc = usbd_xfer_softc(xfer); 636 struct usb_page_cache *pc; 637 int actlen; 638 639 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 640 641 switch (USB_GET_STATE(xfer)) { 642 case USB_ST_TRANSFERRED: 643 pc = usbd_xfer_get_frame(xfer, 0); 644 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 645 646 case USB_ST_SETUP: 647 tr_setup: 648 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 649 usbd_transfer_submit(xfer); 650 return; 651 652 default: /* Error */ 653 if (error != USB_ERR_CANCELLED) { 654 /* try to clear stall first */ 655 usbd_xfer_set_stall(xfer); 656 goto tr_setup; 657 } 658 return; 659 } 660 } 661