2/* $OpenBSD: umoscom.c,v 1.2 2006/10/26 06:02:43 jsg Exp $ */ 3 4/* 5 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20#include <sys/stdint.h> 21#include <sys/stddef.h> 22#include <sys/param.h> 23#include <sys/queue.h> 24#include <sys/types.h> 25#include <sys/systm.h> 26#include <sys/kernel.h> 27#include <sys/bus.h> 28#include <sys/linker_set.h> 29#include <sys/module.h> 30#include <sys/lock.h> 31#include <sys/mutex.h> 32#include <sys/condvar.h> 33#include <sys/sysctl.h> 34#include <sys/sx.h> 35#include <sys/unistd.h> 36#include <sys/callout.h> 37#include <sys/malloc.h> 38#include <sys/priv.h> 39 40#include <dev/usb/usb.h> 41#include <dev/usb/usbdi.h> 42#include <dev/usb/usbdi_util.h> 43#include "usbdevs.h" 44 45#define USB_DEBUG_VAR umoscom_debug 46#include <dev/usb/usb_debug.h> 47#include <dev/usb/usb_process.h> 48 49#include <dev/usb/serial/usb_serial.h> 50 51#ifdef USB_DEBUG 52static int umoscom_debug = 0; 53 54SYSCTL_NODE(_hw_usb, OID_AUTO, umoscom, CTLFLAG_RW, 0, "USB umoscom"); 55SYSCTL_INT(_hw_usb_umoscom, OID_AUTO, debug, CTLFLAG_RW, 56 &umoscom_debug, 0, "Debug level"); 57#endif 58 59#define UMOSCOM_BUFSIZE 1024 /* bytes */ 60 61#define UMOSCOM_CONFIG_INDEX 0 62#define UMOSCOM_IFACE_INDEX 0 63 64/* interrupt packet */ 65#define UMOSCOM_IIR_RLS 0x06 66#define UMOSCOM_IIR_RDA 0x04 67#define UMOSCOM_IIR_CTI 0x0c 68#define UMOSCOM_IIR_THR 0x02 69#define UMOSCOM_IIR_MS 0x00 70 71/* registers */ 72#define UMOSCOM_READ 0x0d 73#define UMOSCOM_WRITE 0x0e 74#define UMOSCOM_UART_REG 0x0300 75#define UMOSCOM_VEND_REG 0x0000 76 77#define UMOSCOM_TXBUF 0x00 /* Write */ 78#define UMOSCOM_RXBUF 0x00 /* Read */ 79#define UMOSCOM_INT 0x01 80#define UMOSCOM_FIFO 0x02 /* Write */ 81#define UMOSCOM_ISR 0x02 /* Read */ 82#define UMOSCOM_LCR 0x03 83#define UMOSCOM_MCR 0x04 84#define UMOSCOM_LSR 0x05 85#define UMOSCOM_MSR 0x06 86#define UMOSCOM_SCRATCH 0x07 87#define UMOSCOM_DIV_LO 0x08 88#define UMOSCOM_DIV_HI 0x09 89#define UMOSCOM_EFR 0x0a 90#define UMOSCOM_XON1 0x0b 91#define UMOSCOM_XON2 0x0c 92#define UMOSCOM_XOFF1 0x0d 93#define UMOSCOM_XOFF2 0x0e 94 95#define UMOSCOM_BAUDLO 0x00 96#define UMOSCOM_BAUDHI 0x01 97 98#define UMOSCOM_INT_RXEN 0x01 99#define UMOSCOM_INT_TXEN 0x02 100#define UMOSCOM_INT_RSEN 0x04 101#define UMOSCOM_INT_MDMEM 0x08 102#define UMOSCOM_INT_SLEEP 0x10 103#define UMOSCOM_INT_XOFF 0x20 104#define UMOSCOM_INT_RTS 0x40 105 106#define UMOSCOM_FIFO_EN 0x01 107#define UMOSCOM_FIFO_RXCLR 0x02 108#define UMOSCOM_FIFO_TXCLR 0x04 109#define UMOSCOM_FIFO_DMA_BLK 0x08 110#define UMOSCOM_FIFO_TXLVL_MASK 0x30 111#define UMOSCOM_FIFO_TXLVL_8 0x00 112#define UMOSCOM_FIFO_TXLVL_16 0x10 113#define UMOSCOM_FIFO_TXLVL_32 0x20 114#define UMOSCOM_FIFO_TXLVL_56 0x30 115#define UMOSCOM_FIFO_RXLVL_MASK 0xc0 116#define UMOSCOM_FIFO_RXLVL_8 0x00 117#define UMOSCOM_FIFO_RXLVL_16 0x40 118#define UMOSCOM_FIFO_RXLVL_56 0x80 119#define UMOSCOM_FIFO_RXLVL_80 0xc0 120 121#define UMOSCOM_ISR_MDM 0x00 122#define UMOSCOM_ISR_NONE 0x01 123#define UMOSCOM_ISR_TX 0x02 124#define UMOSCOM_ISR_RX 0x04 125#define UMOSCOM_ISR_LINE 0x06 126#define UMOSCOM_ISR_RXTIMEOUT 0x0c 127#define UMOSCOM_ISR_RX_XOFF 0x10 128#define UMOSCOM_ISR_RTSCTS 0x20 129#define UMOSCOM_ISR_FIFOEN 0xc0 130 131#define UMOSCOM_LCR_DBITS(x) ((x) - 5) 132#define UMOSCOM_LCR_STOP_BITS_1 0x00 133#define UMOSCOM_LCR_STOP_BITS_2 0x04 /* 2 if 6-8 bits/char or 1.5 if 5 */ 134#define UMOSCOM_LCR_PARITY_NONE 0x00 135#define UMOSCOM_LCR_PARITY_ODD 0x08 136#define UMOSCOM_LCR_PARITY_EVEN 0x18 137#define UMOSCOM_LCR_BREAK 0x40 138#define UMOSCOM_LCR_DIVLATCH_EN 0x80 139 140#define UMOSCOM_MCR_DTR 0x01 141#define UMOSCOM_MCR_RTS 0x02 142#define UMOSCOM_MCR_LOOP 0x04 143#define UMOSCOM_MCR_INTEN 0x08 144#define UMOSCOM_MCR_LOOPBACK 0x10 145#define UMOSCOM_MCR_XONANY 0x20 146#define UMOSCOM_MCR_IRDA_EN 0x40 147#define UMOSCOM_MCR_BAUD_DIV4 0x80 148 149#define UMOSCOM_LSR_RXDATA 0x01 150#define UMOSCOM_LSR_RXOVER 0x02 151#define UMOSCOM_LSR_RXPAR_ERR 0x04 152#define UMOSCOM_LSR_RXFRM_ERR 0x08 153#define UMOSCOM_LSR_RXBREAK 0x10 154#define UMOSCOM_LSR_TXEMPTY 0x20 155#define UMOSCOM_LSR_TXALLEMPTY 0x40 156#define UMOSCOM_LSR_TXFIFO_ERR 0x80 157 158#define UMOSCOM_MSR_CTS_CHG 0x01 159#define UMOSCOM_MSR_DSR_CHG 0x02 160#define UMOSCOM_MSR_RI_CHG 0x04 161#define UMOSCOM_MSR_CD_CHG 0x08 162#define UMOSCOM_MSR_CTS 0x10 163#define UMOSCOM_MSR_RTS 0x20 164#define UMOSCOM_MSR_RI 0x40 165#define UMOSCOM_MSR_CD 0x80 166 167#define UMOSCOM_BAUD_REF 115200 168 169enum { 170 UMOSCOM_BULK_DT_WR, 171 UMOSCOM_BULK_DT_RD, 172 UMOSCOM_INTR_DT_RD, 173 UMOSCOM_N_TRANSFER, 174}; 175 176struct umoscom_softc { 177 struct ucom_super_softc sc_super_ucom; 178 struct ucom_softc sc_ucom; 179 180 struct usb_xfer *sc_xfer[UMOSCOM_N_TRANSFER]; 181 struct usb_device *sc_udev; 182 struct mtx sc_mtx; 183 184 uint8_t sc_mcr; 185 uint8_t sc_lcr; 186}; 187 188/* prototypes */ 189 190static device_probe_t umoscom_probe; 191static device_attach_t umoscom_attach; 192static device_detach_t umoscom_detach; 193 194static usb_callback_t umoscom_write_callback; 195static usb_callback_t umoscom_read_callback; 196static usb_callback_t umoscom_intr_callback; 197 198static void umoscom_cfg_open(struct ucom_softc *); 199static void umoscom_cfg_close(struct ucom_softc *); 200static void umoscom_cfg_set_break(struct ucom_softc *, uint8_t); 201static void umoscom_cfg_set_dtr(struct ucom_softc *, uint8_t); 202static void umoscom_cfg_set_rts(struct ucom_softc *, uint8_t); 203static int umoscom_pre_param(struct ucom_softc *, struct termios *); 204static void umoscom_cfg_param(struct ucom_softc *, struct termios *); 205static void umoscom_cfg_get_status(struct ucom_softc *, uint8_t *, 206 uint8_t *); 207static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t); 208static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t); 209static void umoscom_start_read(struct ucom_softc *); 210static void umoscom_stop_read(struct ucom_softc *); 211static void umoscom_start_write(struct ucom_softc *); 212static void umoscom_stop_write(struct ucom_softc *); 213static void umoscom_poll(struct ucom_softc *ucom); 214 215static const struct usb_config umoscom_config_data[UMOSCOM_N_TRANSFER] = { 216 217 [UMOSCOM_BULK_DT_WR] = { 218 .type = UE_BULK, 219 .endpoint = UE_ADDR_ANY, 220 .direction = UE_DIR_OUT, 221 .bufsize = UMOSCOM_BUFSIZE, 222 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 223 .callback = &umoscom_write_callback, 224 }, 225 226 [UMOSCOM_BULK_DT_RD] = { 227 .type = UE_BULK, 228 .endpoint = UE_ADDR_ANY, 229 .direction = UE_DIR_IN, 230 .bufsize = UMOSCOM_BUFSIZE, 231 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 232 .callback = &umoscom_read_callback, 233 }, 234 235 [UMOSCOM_INTR_DT_RD] = { 236 .type = UE_INTERRUPT, 237 .endpoint = UE_ADDR_ANY, 238 .direction = UE_DIR_IN, 239 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 240 .bufsize = 0, /* use wMaxPacketSize */ 241 .callback = &umoscom_intr_callback, 242 }, 243}; 244 245static const struct ucom_callback umoscom_callback = { 246 /* configuration callbacks */ 247 .ucom_cfg_get_status = &umoscom_cfg_get_status, 248 .ucom_cfg_set_dtr = &umoscom_cfg_set_dtr, 249 .ucom_cfg_set_rts = &umoscom_cfg_set_rts, 250 .ucom_cfg_set_break = &umoscom_cfg_set_break, 251 .ucom_cfg_param = &umoscom_cfg_param, 252 .ucom_cfg_open = &umoscom_cfg_open, 253 .ucom_cfg_close = &umoscom_cfg_close, 254 255 /* other callbacks */ 256 .ucom_pre_param = &umoscom_pre_param, 257 .ucom_start_read = &umoscom_start_read, 258 .ucom_stop_read = &umoscom_stop_read, 259 .ucom_start_write = &umoscom_start_write, 260 .ucom_stop_write = &umoscom_stop_write, 261 .ucom_poll = &umoscom_poll, 262}; 263 264static device_method_t umoscom_methods[] = { 265 DEVMETHOD(device_probe, umoscom_probe), 266 DEVMETHOD(device_attach, umoscom_attach), 267 DEVMETHOD(device_detach, umoscom_detach), 268 {0, 0} 269}; 270 271static devclass_t umoscom_devclass; 272 273static driver_t umoscom_driver = { 274 .name = "umoscom", 275 .methods = umoscom_methods, 276 .size = sizeof(struct umoscom_softc), 277}; 278 279DRIVER_MODULE(umoscom, uhub, umoscom_driver, umoscom_devclass, NULL, 0); 280MODULE_DEPEND(umoscom, ucom, 1, 1, 1); 281MODULE_DEPEND(umoscom, usb, 1, 1, 1);
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283 284static const struct usb_device_id umoscom_devs[] = { 285 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)} 286}; 287 288static int 289umoscom_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 != UMOSCOM_CONFIG_INDEX) { 297 return (ENXIO); 298 } 299 if (uaa->info.bIfaceIndex != UMOSCOM_IFACE_INDEX) { 300 return (ENXIO); 301 } 302 return (usbd_lookup_id_by_uaa(umoscom_devs, sizeof(umoscom_devs), uaa)); 303} 304 305static int 306umoscom_attach(device_t dev) 307{ 308 struct usb_attach_arg *uaa = device_get_ivars(dev); 309 struct umoscom_softc *sc = device_get_softc(dev); 310 int error; 311 uint8_t iface_index; 312 313 sc->sc_udev = uaa->device; 314 sc->sc_mcr = 0x08; /* enable interrupts */ 315 316 /* XXX the device doesn't provide any ID string, so set a static one */ 317 device_set_desc(dev, "MOSCHIP USB Serial Port Adapter"); 318 device_printf(dev, "<MOSCHIP USB Serial Port Adapter>\n"); 319 320 mtx_init(&sc->sc_mtx, "umoscom", NULL, MTX_DEF); 321 322 iface_index = UMOSCOM_IFACE_INDEX; 323 error = usbd_transfer_setup(uaa->device, &iface_index, 324 sc->sc_xfer, umoscom_config_data, 325 UMOSCOM_N_TRANSFER, sc, &sc->sc_mtx); 326 327 if (error) { 328 goto detach; 329 } 330 /* clear stall at first run */ 331 mtx_lock(&sc->sc_mtx); 332 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 333 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 334 mtx_unlock(&sc->sc_mtx); 335 336 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 337 &umoscom_callback, &sc->sc_mtx); 338 if (error) { 339 goto detach; 340 } 341 return (0); 342 343detach: 344 device_printf(dev, "attach error: %s\n", usbd_errstr(error)); 345 umoscom_detach(dev); 346 return (ENXIO); 347} 348 349static int 350umoscom_detach(device_t dev) 351{ 352 struct umoscom_softc *sc = device_get_softc(dev); 353 354 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 355 usbd_transfer_unsetup(sc->sc_xfer, UMOSCOM_N_TRANSFER); 356 mtx_destroy(&sc->sc_mtx); 357 358 return (0); 359} 360 361static void 362umoscom_cfg_open(struct ucom_softc *ucom) 363{ 364 struct umoscom_softc *sc = ucom->sc_parent; 365 366 DPRINTF("\n"); 367 368 /* Purge FIFOs or odd things happen */ 369 umoscom_cfg_write(sc, UMOSCOM_FIFO, 0x00 | UMOSCOM_UART_REG); 370 371 /* Enable FIFO */ 372 umoscom_cfg_write(sc, UMOSCOM_FIFO, UMOSCOM_FIFO_EN | 373 UMOSCOM_FIFO_RXCLR | UMOSCOM_FIFO_TXCLR | 374 UMOSCOM_FIFO_DMA_BLK | UMOSCOM_FIFO_RXLVL_MASK | 375 UMOSCOM_UART_REG); 376 377 /* Enable Interrupt Registers */ 378 umoscom_cfg_write(sc, UMOSCOM_INT, 0x0C | UMOSCOM_UART_REG); 379 380 /* Magic */ 381 umoscom_cfg_write(sc, 0x01, 0x08); 382 383 /* Magic */ 384 umoscom_cfg_write(sc, 0x00, 0x02); 385} 386 387static void 388umoscom_cfg_close(struct ucom_softc *ucom) 389{ 390 return; 391} 392 393static void 394umoscom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 395{ 396 struct umoscom_softc *sc = ucom->sc_parent; 397 uint16_t val; 398 399 val = sc->sc_lcr; 400 if (onoff) 401 val |= UMOSCOM_LCR_BREAK; 402 403 umoscom_cfg_write(sc, UMOSCOM_LCR, val | UMOSCOM_UART_REG); 404} 405 406static void 407umoscom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 408{ 409 struct umoscom_softc *sc = ucom->sc_parent; 410 411 if (onoff) 412 sc->sc_mcr |= UMOSCOM_MCR_DTR; 413 else 414 sc->sc_mcr &= ~UMOSCOM_MCR_DTR; 415 416 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG); 417} 418 419static void 420umoscom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 421{ 422 struct umoscom_softc *sc = ucom->sc_parent; 423 424 if (onoff) 425 sc->sc_mcr |= UMOSCOM_MCR_RTS; 426 else 427 sc->sc_mcr &= ~UMOSCOM_MCR_RTS; 428 429 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG); 430} 431 432static int 433umoscom_pre_param(struct ucom_softc *ucom, struct termios *t) 434{ 435 if ((t->c_ospeed <= 1) || (t->c_ospeed > 115200)) 436 return (EINVAL); 437 438 return (0); 439} 440 441static void 442umoscom_cfg_param(struct ucom_softc *ucom, struct termios *t) 443{ 444 struct umoscom_softc *sc = ucom->sc_parent; 445 uint16_t data; 446 447 DPRINTF("speed=%d\n", t->c_ospeed); 448 449 data = ((uint32_t)UMOSCOM_BAUD_REF) / ((uint32_t)t->c_ospeed); 450 451 if (data == 0) { 452 DPRINTF("invalid baud rate!\n"); 453 return; 454 } 455 umoscom_cfg_write(sc, UMOSCOM_LCR, 456 UMOSCOM_LCR_DIVLATCH_EN | UMOSCOM_UART_REG); 457 458 umoscom_cfg_write(sc, UMOSCOM_BAUDLO, 459 (data & 0xFF) | UMOSCOM_UART_REG); 460 461 umoscom_cfg_write(sc, UMOSCOM_BAUDHI, 462 ((data >> 8) & 0xFF) | UMOSCOM_UART_REG); 463 464 if (t->c_cflag & CSTOPB) 465 data = UMOSCOM_LCR_STOP_BITS_2; 466 else 467 data = UMOSCOM_LCR_STOP_BITS_1; 468 469 if (t->c_cflag & PARENB) { 470 if (t->c_cflag & PARODD) 471 data |= UMOSCOM_LCR_PARITY_ODD; 472 else 473 data |= UMOSCOM_LCR_PARITY_EVEN; 474 } else 475 data |= UMOSCOM_LCR_PARITY_NONE; 476 477 switch (t->c_cflag & CSIZE) { 478 case CS5: 479 data |= UMOSCOM_LCR_DBITS(5); 480 break; 481 case CS6: 482 data |= UMOSCOM_LCR_DBITS(6); 483 break; 484 case CS7: 485 data |= UMOSCOM_LCR_DBITS(7); 486 break; 487 case CS8: 488 data |= UMOSCOM_LCR_DBITS(8); 489 break; 490 } 491 492 sc->sc_lcr = data; 493 umoscom_cfg_write(sc, UMOSCOM_LCR, data | UMOSCOM_UART_REG); 494} 495 496static void 497umoscom_cfg_get_status(struct ucom_softc *ucom, uint8_t *p_lsr, uint8_t *p_msr) 498{ 499 struct umoscom_softc *sc = ucom->sc_parent; 500 uint8_t lsr; 501 uint8_t msr; 502 503 DPRINTFN(5, "\n"); 504 505 /* read status registers */ 506 507 lsr = umoscom_cfg_read(sc, UMOSCOM_LSR); 508 msr = umoscom_cfg_read(sc, UMOSCOM_MSR); 509 510 /* translate bits */ 511 512 if (msr & UMOSCOM_MSR_CTS) 513 *p_msr |= SER_CTS; 514 515 if (msr & UMOSCOM_MSR_CD) 516 *p_msr |= SER_DCD; 517 518 if (msr & UMOSCOM_MSR_RI) 519 *p_msr |= SER_RI; 520 521 if (msr & UMOSCOM_MSR_RTS) 522 *p_msr |= SER_DSR; 523} 524 525static void 526umoscom_cfg_write(struct umoscom_softc *sc, uint16_t reg, uint16_t val) 527{ 528 struct usb_device_request req; 529 530 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 531 req.bRequest = UMOSCOM_WRITE; 532 USETW(req.wValue, val); 533 USETW(req.wIndex, reg); 534 USETW(req.wLength, 0); 535 536 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 537 &req, NULL, 0, 1000); 538} 539 540static uint8_t 541umoscom_cfg_read(struct umoscom_softc *sc, uint16_t reg) 542{ 543 struct usb_device_request req; 544 uint8_t val; 545 546 req.bmRequestType = UT_READ_VENDOR_DEVICE; 547 req.bRequest = UMOSCOM_READ; 548 USETW(req.wValue, 0); 549 USETW(req.wIndex, reg); 550 USETW(req.wLength, 1); 551 552 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 553 &req, &val, 0, 1000); 554 555 DPRINTF("reg=0x%04x, val=0x%02x\n", reg, val); 556 557 return (val); 558} 559 560static void 561umoscom_start_read(struct ucom_softc *ucom) 562{ 563 struct umoscom_softc *sc = ucom->sc_parent; 564 565#if 0 566 /* start interrupt endpoint */ 567 usbd_transfer_start(sc->sc_xfer[UMOSCOM_INTR_DT_RD]); 568#endif 569 /* start read endpoint */ 570 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 571} 572 573static void 574umoscom_stop_read(struct ucom_softc *ucom) 575{ 576 struct umoscom_softc *sc = ucom->sc_parent; 577 578 /* stop interrupt transfer */ 579 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_INTR_DT_RD]); 580 581 /* stop read endpoint */ 582 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 583} 584 585static void 586umoscom_start_write(struct ucom_softc *ucom) 587{ 588 struct umoscom_softc *sc = ucom->sc_parent; 589 590 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 591} 592 593static void 594umoscom_stop_write(struct ucom_softc *ucom) 595{ 596 struct umoscom_softc *sc = ucom->sc_parent; 597 598 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 599} 600 601static void 602umoscom_write_callback(struct usb_xfer *xfer, usb_error_t error) 603{ 604 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 605 struct usb_page_cache *pc; 606 uint32_t actlen; 607 608 switch (USB_GET_STATE(xfer)) { 609 case USB_ST_SETUP: 610 case USB_ST_TRANSFERRED: 611tr_setup: 612 DPRINTF("\n"); 613 614 pc = usbd_xfer_get_frame(xfer, 0); 615 if (ucom_get_data(&sc->sc_ucom, pc, 0, 616 UMOSCOM_BUFSIZE, &actlen)) { 617 618 usbd_xfer_set_frame_len(xfer, 0, actlen); 619 usbd_transfer_submit(xfer); 620 } 621 return; 622 623 default: /* Error */ 624 if (error != USB_ERR_CANCELLED) { 625 DPRINTFN(0, "transfer failed\n"); 626 /* try to clear stall first */ 627 usbd_xfer_set_stall(xfer); 628 goto tr_setup; 629 } 630 return; 631 } 632} 633 634static void 635umoscom_read_callback(struct usb_xfer *xfer, usb_error_t error) 636{ 637 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 638 struct usb_page_cache *pc; 639 int actlen; 640 641 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 642 643 switch (USB_GET_STATE(xfer)) { 644 case USB_ST_TRANSFERRED: 645 DPRINTF("got %d bytes\n", actlen); 646 pc = usbd_xfer_get_frame(xfer, 0); 647 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 648 649 case USB_ST_SETUP: 650tr_setup: 651 DPRINTF("\n"); 652 653 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 654 usbd_transfer_submit(xfer); 655 return; 656 657 default: /* Error */ 658 if (error != USB_ERR_CANCELLED) { 659 DPRINTFN(0, "transfer failed\n"); 660 /* try to clear stall first */ 661 usbd_xfer_set_stall(xfer); 662 goto tr_setup; 663 } 664 return; 665 } 666} 667 668static void 669umoscom_intr_callback(struct usb_xfer *xfer, usb_error_t error) 670{ 671 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 672 int actlen; 673 674 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 675 676 switch (USB_GET_STATE(xfer)) { 677 case USB_ST_TRANSFERRED: 678 if (actlen < 2) { 679 DPRINTF("too short message\n"); 680 goto tr_setup; 681 } 682 ucom_status_change(&sc->sc_ucom); 683 684 case USB_ST_SETUP: 685tr_setup: 686 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 687 usbd_transfer_submit(xfer); 688 return; 689 690 default: /* Error */ 691 if (error != USB_ERR_CANCELLED) { 692 DPRINTFN(0, "transfer failed\n"); 693 /* try to clear stall first */ 694 usbd_xfer_set_stall(xfer); 695 goto tr_setup; 696 } 697 return; 698 } 699} 700 701static void 702umoscom_poll(struct ucom_softc *ucom) 703{ 704 struct umoscom_softc *sc = ucom->sc_parent; 705 usbd_transfer_poll(sc->sc_xfer, UMOSCOM_N_TRANSFER); 706}
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