1/* $OpenBSD: umoscom.c,v 1.2 2006/10/26 06:02:43 jsg Exp $ */ 2 3/* 4 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19#include <sys/stdint.h> 20#include <sys/stddef.h> 21#include <sys/param.h> 22#include <sys/queue.h> 23#include <sys/types.h> 24#include <sys/systm.h> 25#include <sys/kernel.h> 26#include <sys/bus.h> 27#include <sys/module.h> 28#include <sys/lock.h> 29#include <sys/mutex.h> 30#include <sys/condvar.h> 31#include <sys/sysctl.h> 32#include <sys/sx.h> 33#include <sys/unistd.h> 34#include <sys/callout.h> 35#include <sys/malloc.h> 36#include <sys/priv.h> 37 38#include <dev/usb/usb.h> 39#include <dev/usb/usbdi.h> 40#include <dev/usb/usbdi_util.h> 41#include "usbdevs.h" 42 43#define USB_DEBUG_VAR umoscom_debug 44#include <dev/usb/usb_debug.h> 45#include <dev/usb/usb_process.h> 46 47#include <dev/usb/serial/usb_serial.h> 48 49#ifdef USB_DEBUG 50static int umoscom_debug = 0; 51 52static SYSCTL_NODE(_hw_usb, OID_AUTO, umoscom, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 53 "USB umoscom"); 54SYSCTL_INT(_hw_usb_umoscom, OID_AUTO, debug, CTLFLAG_RWTUN, 55 &umoscom_debug, 0, "Debug level"); 56#endif 57 58#define UMOSCOM_BUFSIZE 1024 /* bytes */ 59 60#define UMOSCOM_CONFIG_INDEX 0 61#define UMOSCOM_IFACE_INDEX 0 62 63/* interrupt packet */ 64#define UMOSCOM_IIR_RLS 0x06 65#define UMOSCOM_IIR_RDA 0x04 66#define UMOSCOM_IIR_CTI 0x0c 67#define UMOSCOM_IIR_THR 0x02 68#define UMOSCOM_IIR_MS 0x00 69 70/* registers */ 71#define UMOSCOM_READ 0x0d 72#define UMOSCOM_WRITE 0x0e 73#define UMOSCOM_UART_REG 0x0300 74#define UMOSCOM_VEND_REG 0x0000 75 76#define UMOSCOM_TXBUF 0x00 /* Write */ 77#define UMOSCOM_RXBUF 0x00 /* Read */ 78#define UMOSCOM_INT 0x01 79#define UMOSCOM_FIFO 0x02 /* Write */ 80#define UMOSCOM_ISR 0x02 /* Read */ 81#define UMOSCOM_LCR 0x03 82#define UMOSCOM_MCR 0x04 83#define UMOSCOM_LSR 0x05 84#define UMOSCOM_MSR 0x06 85#define UMOSCOM_SCRATCH 0x07 86#define UMOSCOM_DIV_LO 0x08 87#define UMOSCOM_DIV_HI 0x09 88#define UMOSCOM_EFR 0x0a 89#define UMOSCOM_XON1 0x0b 90#define UMOSCOM_XON2 0x0c 91#define UMOSCOM_XOFF1 0x0d 92#define UMOSCOM_XOFF2 0x0e 93 94#define UMOSCOM_BAUDLO 0x00 95#define UMOSCOM_BAUDHI 0x01 96 97#define UMOSCOM_INT_RXEN 0x01 98#define UMOSCOM_INT_TXEN 0x02 99#define UMOSCOM_INT_RSEN 0x04 100#define UMOSCOM_INT_MDMEM 0x08 101#define UMOSCOM_INT_SLEEP 0x10 102#define UMOSCOM_INT_XOFF 0x20 103#define UMOSCOM_INT_RTS 0x40 104 105#define UMOSCOM_FIFO_EN 0x01 106#define UMOSCOM_FIFO_RXCLR 0x02 107#define UMOSCOM_FIFO_TXCLR 0x04 108#define UMOSCOM_FIFO_DMA_BLK 0x08 109#define UMOSCOM_FIFO_TXLVL_MASK 0x30 110#define UMOSCOM_FIFO_TXLVL_8 0x00 111#define UMOSCOM_FIFO_TXLVL_16 0x10 112#define UMOSCOM_FIFO_TXLVL_32 0x20 113#define UMOSCOM_FIFO_TXLVL_56 0x30 114#define UMOSCOM_FIFO_RXLVL_MASK 0xc0 115#define UMOSCOM_FIFO_RXLVL_8 0x00 116#define UMOSCOM_FIFO_RXLVL_16 0x40 117#define UMOSCOM_FIFO_RXLVL_56 0x80 118#define UMOSCOM_FIFO_RXLVL_80 0xc0 119 120#define UMOSCOM_ISR_MDM 0x00 121#define UMOSCOM_ISR_NONE 0x01 122#define UMOSCOM_ISR_TX 0x02 123#define UMOSCOM_ISR_RX 0x04 124#define UMOSCOM_ISR_LINE 0x06 125#define UMOSCOM_ISR_RXTIMEOUT 0x0c 126#define UMOSCOM_ISR_RX_XOFF 0x10 127#define UMOSCOM_ISR_RTSCTS 0x20 128#define UMOSCOM_ISR_FIFOEN 0xc0 129 130#define UMOSCOM_LCR_DBITS(x) ((x) - 5) 131#define UMOSCOM_LCR_STOP_BITS_1 0x00 132#define UMOSCOM_LCR_STOP_BITS_2 0x04 /* 2 if 6-8 bits/char or 1.5 if 5 */ 133#define UMOSCOM_LCR_PARITY_NONE 0x00 134#define UMOSCOM_LCR_PARITY_ODD 0x08 135#define UMOSCOM_LCR_PARITY_EVEN 0x18 136#define UMOSCOM_LCR_BREAK 0x40 137#define UMOSCOM_LCR_DIVLATCH_EN 0x80 138 139#define UMOSCOM_MCR_DTR 0x01 140#define UMOSCOM_MCR_RTS 0x02 141#define UMOSCOM_MCR_LOOP 0x04 142#define UMOSCOM_MCR_INTEN 0x08 143#define UMOSCOM_MCR_LOOPBACK 0x10 144#define UMOSCOM_MCR_XONANY 0x20 145#define UMOSCOM_MCR_IRDA_EN 0x40 146#define UMOSCOM_MCR_BAUD_DIV4 0x80 147 148#define UMOSCOM_LSR_RXDATA 0x01 149#define UMOSCOM_LSR_RXOVER 0x02 150#define UMOSCOM_LSR_RXPAR_ERR 0x04 151#define UMOSCOM_LSR_RXFRM_ERR 0x08 152#define UMOSCOM_LSR_RXBREAK 0x10 153#define UMOSCOM_LSR_TXEMPTY 0x20 154#define UMOSCOM_LSR_TXALLEMPTY 0x40 155#define UMOSCOM_LSR_TXFIFO_ERR 0x80 156 157#define UMOSCOM_MSR_CTS_CHG 0x01 158#define UMOSCOM_MSR_DSR_CHG 0x02 159#define UMOSCOM_MSR_RI_CHG 0x04 160#define UMOSCOM_MSR_CD_CHG 0x08 161#define UMOSCOM_MSR_CTS 0x10 162#define UMOSCOM_MSR_RTS 0x20 163#define UMOSCOM_MSR_RI 0x40 164#define UMOSCOM_MSR_CD 0x80 165 166#define UMOSCOM_BAUD_REF 115200 167 168enum { 169 UMOSCOM_BULK_DT_WR, 170 UMOSCOM_BULK_DT_RD, 171 UMOSCOM_INTR_DT_RD, 172 UMOSCOM_N_TRANSFER, 173}; 174 175struct umoscom_softc { 176 struct ucom_super_softc sc_super_ucom; 177 struct ucom_softc sc_ucom; 178 179 struct usb_xfer *sc_xfer[UMOSCOM_N_TRANSFER]; 180 struct usb_device *sc_udev; 181 struct mtx sc_mtx; 182 183 uint8_t sc_mcr; 184 uint8_t sc_lcr; 185}; 186 187/* prototypes */ 188 189static device_probe_t umoscom_probe; 190static device_attach_t umoscom_attach; 191static device_detach_t umoscom_detach; 192static void umoscom_free_softc(struct umoscom_softc *); 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_free(struct ucom_softc *); 199static void umoscom_cfg_open(struct ucom_softc *); 200static void umoscom_cfg_close(struct ucom_softc *); 201static void umoscom_cfg_set_break(struct ucom_softc *, uint8_t); 202static void umoscom_cfg_set_dtr(struct ucom_softc *, uint8_t); 203static void umoscom_cfg_set_rts(struct ucom_softc *, uint8_t); 204static int umoscom_pre_param(struct ucom_softc *, struct termios *); 205static void umoscom_cfg_param(struct ucom_softc *, struct termios *); 206static void umoscom_cfg_get_status(struct ucom_softc *, uint8_t *, 207 uint8_t *); 208static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t); 209static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t); 210static void umoscom_start_read(struct ucom_softc *); 211static void umoscom_stop_read(struct ucom_softc *); 212static void umoscom_start_write(struct ucom_softc *); 213static void umoscom_stop_write(struct ucom_softc *); 214static void umoscom_poll(struct ucom_softc *ucom); 215 216static const struct usb_config umoscom_config_data[UMOSCOM_N_TRANSFER] = { 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 .ucom_free = &umoscom_free, 263}; 264 265static device_method_t umoscom_methods[] = { 266 DEVMETHOD(device_probe, umoscom_probe), 267 DEVMETHOD(device_attach, umoscom_attach), 268 DEVMETHOD(device_detach, umoscom_detach), 269 DEVMETHOD_END 270}; 271 272static driver_t umoscom_driver = { 273 .name = "umoscom", 274 .methods = umoscom_methods, 275 .size = sizeof(struct umoscom_softc), 276}; 277 278static const STRUCT_USB_HOST_ID umoscom_devs[] = { 279 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)} 280}; 281 282DRIVER_MODULE(umoscom, uhub, umoscom_driver, NULL, NULL); 283MODULE_DEPEND(umoscom, ucom, 1, 1, 1); 284MODULE_DEPEND(umoscom, usb, 1, 1, 1); 285MODULE_VERSION(umoscom, 1); 286USB_PNP_HOST_INFO(umoscom_devs); 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 ucom_ref(&sc->sc_super_ucom); 322 323 iface_index = UMOSCOM_IFACE_INDEX; 324 error = usbd_transfer_setup(uaa->device, &iface_index, 325 sc->sc_xfer, umoscom_config_data, 326 UMOSCOM_N_TRANSFER, sc, &sc->sc_mtx); 327 328 if (error) { 329 goto detach; 330 } 331 /* clear stall at first run */ 332 mtx_lock(&sc->sc_mtx); 333 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 334 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 335 mtx_unlock(&sc->sc_mtx); 336 337 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 338 &umoscom_callback, &sc->sc_mtx); 339 if (error) { 340 goto detach; 341 } 342 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 343 344 return (0); 345 346detach: 347 device_printf(dev, "attach error: %s\n", usbd_errstr(error)); 348 umoscom_detach(dev); 349 return (ENXIO); 350} 351 352static int 353umoscom_detach(device_t dev) 354{ 355 struct umoscom_softc *sc = device_get_softc(dev); 356 357 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 358 usbd_transfer_unsetup(sc->sc_xfer, UMOSCOM_N_TRANSFER); 359 360 device_claim_softc(dev); 361 362 umoscom_free_softc(sc); 363 364 return (0); 365} 366 367UCOM_UNLOAD_DRAIN(umoscom); 368 369static void 370umoscom_free_softc(struct umoscom_softc *sc) 371{ 372 if (ucom_unref(&sc->sc_super_ucom)) { 373 mtx_destroy(&sc->sc_mtx); 374 device_free_softc(sc); 375 } 376} 377 378static void 379umoscom_free(struct ucom_softc *ucom) 380{ 381 umoscom_free_softc(ucom->sc_parent); 382} 383 384static void 385umoscom_cfg_open(struct ucom_softc *ucom) 386{ 387 struct umoscom_softc *sc = ucom->sc_parent; 388 389 DPRINTF("\n"); 390 391 /* Purge FIFOs or odd things happen */ 392 umoscom_cfg_write(sc, UMOSCOM_FIFO, 0x00 | UMOSCOM_UART_REG); 393 394 /* Enable FIFO */ 395 umoscom_cfg_write(sc, UMOSCOM_FIFO, UMOSCOM_FIFO_EN | 396 UMOSCOM_FIFO_RXCLR | UMOSCOM_FIFO_TXCLR | 397 UMOSCOM_FIFO_DMA_BLK | UMOSCOM_FIFO_RXLVL_MASK | 398 UMOSCOM_UART_REG); 399 400 /* Enable Interrupt Registers */ 401 umoscom_cfg_write(sc, UMOSCOM_INT, 0x0C | UMOSCOM_UART_REG); 402 403 /* Magic */ 404 umoscom_cfg_write(sc, 0x01, 0x08); 405 406 /* Magic */ 407 umoscom_cfg_write(sc, 0x00, 0x02); 408} 409 410static void 411umoscom_cfg_close(struct ucom_softc *ucom) 412{ 413 return; 414} 415 416static void 417umoscom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 418{ 419 struct umoscom_softc *sc = ucom->sc_parent; 420 uint16_t val; 421 422 val = sc->sc_lcr; 423 if (onoff) 424 val |= UMOSCOM_LCR_BREAK; 425 426 umoscom_cfg_write(sc, UMOSCOM_LCR, val | UMOSCOM_UART_REG); 427} 428 429static void 430umoscom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 431{ 432 struct umoscom_softc *sc = ucom->sc_parent; 433 434 if (onoff) 435 sc->sc_mcr |= UMOSCOM_MCR_DTR; 436 else 437 sc->sc_mcr &= ~UMOSCOM_MCR_DTR; 438 439 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG); 440} 441 442static void 443umoscom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 444{ 445 struct umoscom_softc *sc = ucom->sc_parent; 446 447 if (onoff) 448 sc->sc_mcr |= UMOSCOM_MCR_RTS; 449 else 450 sc->sc_mcr &= ~UMOSCOM_MCR_RTS; 451 452 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG); 453} 454 455static int 456umoscom_pre_param(struct ucom_softc *ucom, struct termios *t) 457{ 458 if ((t->c_ospeed <= 1) || (t->c_ospeed > 115200)) 459 return (EINVAL); 460 461 return (0); 462} 463 464static void 465umoscom_cfg_param(struct ucom_softc *ucom, struct termios *t) 466{ 467 struct umoscom_softc *sc = ucom->sc_parent; 468 uint16_t data; 469 470 DPRINTF("speed=%d\n", t->c_ospeed); 471 472 data = ((uint32_t)UMOSCOM_BAUD_REF) / ((uint32_t)t->c_ospeed); 473 474 if (data == 0) { 475 DPRINTF("invalid baud rate!\n"); 476 return; 477 } 478 umoscom_cfg_write(sc, UMOSCOM_LCR, 479 UMOSCOM_LCR_DIVLATCH_EN | UMOSCOM_UART_REG); 480 481 umoscom_cfg_write(sc, UMOSCOM_BAUDLO, 482 (data & 0xFF) | UMOSCOM_UART_REG); 483 484 umoscom_cfg_write(sc, UMOSCOM_BAUDHI, 485 ((data >> 8) & 0xFF) | UMOSCOM_UART_REG); 486 487 if (t->c_cflag & CSTOPB) 488 data = UMOSCOM_LCR_STOP_BITS_2; 489 else 490 data = UMOSCOM_LCR_STOP_BITS_1; 491 492 if (t->c_cflag & PARENB) { 493 if (t->c_cflag & PARODD) 494 data |= UMOSCOM_LCR_PARITY_ODD; 495 else 496 data |= UMOSCOM_LCR_PARITY_EVEN; 497 } else 498 data |= UMOSCOM_LCR_PARITY_NONE; 499 500 switch (t->c_cflag & CSIZE) { 501 case CS5: 502 data |= UMOSCOM_LCR_DBITS(5); 503 break; 504 case CS6: 505 data |= UMOSCOM_LCR_DBITS(6); 506 break; 507 case CS7: 508 data |= UMOSCOM_LCR_DBITS(7); 509 break; 510 case CS8: 511 data |= UMOSCOM_LCR_DBITS(8); 512 break; 513 } 514 515 sc->sc_lcr = data; 516 umoscom_cfg_write(sc, UMOSCOM_LCR, data | UMOSCOM_UART_REG); 517} 518 519static void 520umoscom_cfg_get_status(struct ucom_softc *ucom, uint8_t *p_lsr, uint8_t *p_msr) 521{ 522 struct umoscom_softc *sc = ucom->sc_parent; 523 uint8_t msr; 524 525 DPRINTFN(5, "\n"); 526 527 /* 528 * Read status registers. MSR bits need translation from ns16550 to 529 * SER_* values. LSR bits are ns16550 in hardware and ucom. 530 */ 531 532 *p_lsr = umoscom_cfg_read(sc, UMOSCOM_LSR); 533 msr = umoscom_cfg_read(sc, UMOSCOM_MSR); 534 535 /* translate bits */ 536 537 if (msr & UMOSCOM_MSR_CTS) 538 *p_msr |= SER_CTS; 539 540 if (msr & UMOSCOM_MSR_CD) 541 *p_msr |= SER_DCD; 542 543 if (msr & UMOSCOM_MSR_RI) 544 *p_msr |= SER_RI; 545 546 if (msr & UMOSCOM_MSR_RTS) 547 *p_msr |= SER_DSR; 548} 549 550static void 551umoscom_cfg_write(struct umoscom_softc *sc, uint16_t reg, uint16_t val) 552{ 553 struct usb_device_request req; 554 555 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 556 req.bRequest = UMOSCOM_WRITE; 557 USETW(req.wValue, val); 558 USETW(req.wIndex, reg); 559 USETW(req.wLength, 0); 560 561 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 562 &req, NULL, 0, 1000); 563} 564 565static uint8_t 566umoscom_cfg_read(struct umoscom_softc *sc, uint16_t reg) 567{ 568 struct usb_device_request req; 569 uint8_t val; 570 571 req.bmRequestType = UT_READ_VENDOR_DEVICE; 572 req.bRequest = UMOSCOM_READ; 573 USETW(req.wValue, 0); 574 USETW(req.wIndex, reg); 575 USETW(req.wLength, 1); 576 577 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 578 &req, &val, 0, 1000); 579 580 DPRINTF("reg=0x%04x, val=0x%02x\n", reg, val); 581 582 return (val); 583} 584 585static void 586umoscom_start_read(struct ucom_softc *ucom) 587{ 588 struct umoscom_softc *sc = ucom->sc_parent; 589 590#if 0 591 /* start interrupt endpoint */ 592 usbd_transfer_start(sc->sc_xfer[UMOSCOM_INTR_DT_RD]); 593#endif 594 /* start read endpoint */ 595 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 596} 597 598static void 599umoscom_stop_read(struct ucom_softc *ucom) 600{ 601 struct umoscom_softc *sc = ucom->sc_parent; 602 603 /* stop interrupt transfer */ 604 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_INTR_DT_RD]); 605 606 /* stop read endpoint */ 607 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 608} 609 610static void 611umoscom_start_write(struct ucom_softc *ucom) 612{ 613 struct umoscom_softc *sc = ucom->sc_parent; 614 615 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 616} 617 618static void 619umoscom_stop_write(struct ucom_softc *ucom) 620{ 621 struct umoscom_softc *sc = ucom->sc_parent; 622 623 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 624} 625 626static void 627umoscom_write_callback(struct usb_xfer *xfer, usb_error_t error) 628{ 629 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 630 struct usb_page_cache *pc; 631 uint32_t actlen; 632 633 switch (USB_GET_STATE(xfer)) { 634 case USB_ST_SETUP: 635 case USB_ST_TRANSFERRED: 636tr_setup: 637 DPRINTF("\n"); 638 639 pc = usbd_xfer_get_frame(xfer, 0); 640 if (ucom_get_data(&sc->sc_ucom, pc, 0, 641 UMOSCOM_BUFSIZE, &actlen)) { 642 usbd_xfer_set_frame_len(xfer, 0, actlen); 643 usbd_transfer_submit(xfer); 644 } 645 return; 646 647 default: /* Error */ 648 if (error != USB_ERR_CANCELLED) { 649 DPRINTFN(0, "transfer failed\n"); 650 /* try to clear stall first */ 651 usbd_xfer_set_stall(xfer); 652 goto tr_setup; 653 } 654 return; 655 } 656} 657 658static void 659umoscom_read_callback(struct usb_xfer *xfer, usb_error_t error) 660{ 661 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 662 struct usb_page_cache *pc; 663 int actlen; 664 665 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 666 667 switch (USB_GET_STATE(xfer)) { 668 case USB_ST_TRANSFERRED: 669 DPRINTF("got %d bytes\n", actlen); 670 pc = usbd_xfer_get_frame(xfer, 0); 671 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 672 673 case USB_ST_SETUP: 674tr_setup: 675 DPRINTF("\n"); 676 677 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 678 usbd_transfer_submit(xfer); 679 return; 680 681 default: /* Error */ 682 if (error != USB_ERR_CANCELLED) { 683 DPRINTFN(0, "transfer failed\n"); 684 /* try to clear stall first */ 685 usbd_xfer_set_stall(xfer); 686 goto tr_setup; 687 } 688 return; 689 } 690} 691 692static void 693umoscom_intr_callback(struct usb_xfer *xfer, usb_error_t error) 694{ 695 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 696 int actlen; 697 698 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 699 700 switch (USB_GET_STATE(xfer)) { 701 case USB_ST_TRANSFERRED: 702 if (actlen < 2) { 703 DPRINTF("too short message\n"); 704 goto tr_setup; 705 } 706 ucom_status_change(&sc->sc_ucom); 707 708 case USB_ST_SETUP: 709tr_setup: 710 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 711 usbd_transfer_submit(xfer); 712 return; 713 714 default: /* Error */ 715 if (error != USB_ERR_CANCELLED) { 716 DPRINTFN(0, "transfer failed\n"); 717 /* try to clear stall first */ 718 usbd_xfer_set_stall(xfer); 719 goto tr_setup; 720 } 721 return; 722 } 723} 724 725static void 726umoscom_poll(struct ucom_softc *ucom) 727{ 728 struct umoscom_softc *sc = ucom->sc_parent; 729 usbd_transfer_poll(sc->sc_xfer, UMOSCOM_N_TRANSFER); 730} 731