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/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 82 static int uvisor_debug = 0; 83 84 SYSCTL_NODE(_hw_usb, OID_AUTO, uvisor, CTLFLAG_RW, 0, "USB uvisor"); 85 SYSCTL_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 8 125 struct 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 151 152 struct 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; 163 164 enum { 165 UVISOR_BULK_DT_WR, 166 UVISOR_BULK_DT_RD, 167 UVISOR_N_TRANSFER, 168 }; 169 170 struct 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 */ 189 190 static device_probe_t uvisor_probe; 191 static device_attach_t uvisor_attach; 192 static device_detach_t uvisor_detach; 193 194 static usb_callback_t uvisor_write_callback; 195 static usb_callback_t uvisor_read_callback; 196 197 static usb_error_t uvisor_init(struct uvisor_softc *, struct usb_device *, 198 struct usb_config *); 199 static void uvisor_cfg_open(struct ucom_softc *); 200 static void uvisor_cfg_close(struct ucom_softc *); 201 static void uvisor_start_read(struct ucom_softc *); 202 static void uvisor_stop_read(struct ucom_softc *); 203 static void uvisor_start_write(struct ucom_softc *); 204 static void uvisor_stop_write(struct ucom_softc *); 205 206 static 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 }; 227 228 static 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 }; 236 237 static 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 }; 243 244 static devclass_t uvisor_devclass; 245 246 static driver_t uvisor_driver = { 247 .name = "uvisor", 248 .methods = uvisor_methods, 249 .size = sizeof(struct uvisor_softc), 250 }; 251 252 DRIVER_MODULE(uvisor, uhub, uvisor_driver, uvisor_devclass, NULL, 0); 253 MODULE_DEPEND(uvisor, ucom, 1, 1, 1); 254 MODULE_DEPEND(uvisor, usb, 1, 1, 1); 255 256 static const struct usb_device_id uvisor_devs[] = { 257 #define UVISOR_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) } 258 UVISOR_DEV(ACEECA, MEZ1000, UVISOR_FLAG_PALM4), 259 UVISOR_DEV(ALPHASMART, DANA_SYNC, UVISOR_FLAG_PALM4), 260 UVISOR_DEV(GARMIN, IQUE_3600, UVISOR_FLAG_PALM4), 261 UVISOR_DEV(FOSSIL, WRISTPDA, UVISOR_FLAG_PALM4), 262 UVISOR_DEV(HANDSPRING, VISOR, UVISOR_FLAG_VISOR), 263 UVISOR_DEV(HANDSPRING, TREO, UVISOR_FLAG_PALM4), 264 UVISOR_DEV(HANDSPRING, TREO600, UVISOR_FLAG_PALM4), 265 UVISOR_DEV(PALM, M500, UVISOR_FLAG_PALM4), 266 UVISOR_DEV(PALM, M505, UVISOR_FLAG_PALM4), 267 UVISOR_DEV(PALM, M515, UVISOR_FLAG_PALM4), 268 UVISOR_DEV(PALM, I705, UVISOR_FLAG_PALM4), 269 UVISOR_DEV(PALM, M125, UVISOR_FLAG_PALM4), 270 UVISOR_DEV(PALM, M130, UVISOR_FLAG_PALM4), 271 UVISOR_DEV(PALM, TUNGSTEN_Z, UVISOR_FLAG_PALM4), 272 UVISOR_DEV(PALM, TUNGSTEN_T, UVISOR_FLAG_PALM4), 273 UVISOR_DEV(PALM, ZIRE, UVISOR_FLAG_PALM4), 274 UVISOR_DEV(PALM, ZIRE31, UVISOR_FLAG_PALM4), 275 UVISOR_DEV(SAMSUNG, I500, UVISOR_FLAG_PALM4), 276 UVISOR_DEV(SONY, CLIE_40, 0), 277 UVISOR_DEV(SONY, CLIE_41, 0), 278 UVISOR_DEV(SONY, CLIE_S360, UVISOR_FLAG_PALM4), 279 UVISOR_DEV(SONY, CLIE_NX60, UVISOR_FLAG_PALM4), 280 UVISOR_DEV(SONY, CLIE_35, UVISOR_FLAG_PALM35), 281 /* UVISOR_DEV(SONY, CLIE_25, UVISOR_FLAG_PALM4 ), */ 282 UVISOR_DEV(SONY, CLIE_TJ37, UVISOR_FLAG_PALM4), 283 /* UVISOR_DEV(SONY, CLIE_TH55, UVISOR_FLAG_PALM4 ), See PR 80935 */ 284 UVISOR_DEV(TAPWAVE, ZODIAC, UVISOR_FLAG_PALM4), 285 #undef UVISOR_DEV 286 }; 287 288 static int 289 uvisor_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 != UVISOR_CONFIG_INDEX) { 297 return (ENXIO); 298 } 299 if (uaa->info.bIfaceIndex != UVISOR_IFACE_INDEX) { 300 return (ENXIO); 301 } 302 return (usbd_lookup_id_by_uaa(uvisor_devs, sizeof(uvisor_devs), uaa)); 303 } 304 305 static int 306 uvisor_attach(device_t dev) 307 { 308 struct usb_attach_arg *uaa = device_get_ivars(dev); 309 struct uvisor_softc *sc = device_get_softc(dev); 310 struct usb_config uvisor_config_copy[UVISOR_N_TRANSFER]; 311 int error; 312 313 DPRINTF("sc=%p\n", sc); 314 bcopy(uvisor_config, uvisor_config_copy, 315 sizeof(uvisor_config_copy)); 316 device_set_usb_desc(dev); 317 318 mtx_init(&sc->sc_mtx, "uvisor", NULL, MTX_DEF); 319 320 sc->sc_udev = uaa->device; 321 322 /* configure the device */ 323 324 sc->sc_flag = USB_GET_DRIVER_INFO(uaa); 325 sc->sc_iface_no = uaa->info.bIfaceNum; 326 sc->sc_iface_index = UVISOR_IFACE_INDEX; 327 328 error = uvisor_init(sc, uaa->device, uvisor_config_copy); 329 330 if (error) { 331 DPRINTF("init failed, error=%s\n", 332 usbd_errstr(error)); 333 goto detach; 334 } 335 error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index, 336 sc->sc_xfer, uvisor_config_copy, UVISOR_N_TRANSFER, 337 sc, &sc->sc_mtx); 338 if (error) { 339 DPRINTF("could not allocate all pipes\n"); 340 goto detach; 341 } 342 343 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 344 &uvisor_callback, &sc->sc_mtx); 345 if (error) { 346 DPRINTF("ucom_attach failed\n"); 347 goto detach; 348 } 349 return (0); 350 351 detach: 352 uvisor_detach(dev); 353 return (ENXIO); 354 } 355 356 static int 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, 1); 364 usbd_transfer_unsetup(sc->sc_xfer, UVISOR_N_TRANSFER); 365 mtx_destroy(&sc->sc_mtx); 366 367 return (0); 368 } 369 370 static usb_error_t 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 520 uvisor_cfg_open(struct ucom_softc *ucom) 521 { 522 return; 523 } 524 525 static void 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 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 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 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 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 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 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