1/* $FreeBSD$ */ 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/module.h> 29#include <sys/lock.h> 30#include <sys/mutex.h> 31#include <sys/condvar.h> 32#include <sys/sysctl.h> 33#include <sys/sx.h> 34#include <sys/unistd.h> 35#include <sys/callout.h> 36#include <sys/malloc.h> 37#include <sys/priv.h> 38 39#include <dev/usb/usb.h> 40#include <dev/usb/usbdi.h> 41#include <dev/usb/usbdi_util.h> 42#include "usbdevs.h" 43 44#define USB_DEBUG_VAR umoscom_debug 45#include <dev/usb/usb_debug.h> 46#include <dev/usb/usb_process.h> 47 48#include <dev/usb/serial/usb_serial.h> 49 50#ifdef USB_DEBUG 51static int umoscom_debug = 0; 52 53static SYSCTL_NODE(_hw_usb, OID_AUTO, umoscom, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 54 "USB umoscom"); 55SYSCTL_INT(_hw_usb_umoscom, OID_AUTO, debug, CTLFLAG_RWTUN, 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; 193static void umoscom_free_softc(struct umoscom_softc *); 194 195static usb_callback_t umoscom_write_callback; 196static usb_callback_t umoscom_read_callback; 197static usb_callback_t umoscom_intr_callback; 198 199static void umoscom_free(struct ucom_softc *); 200static void umoscom_cfg_open(struct ucom_softc *); 201static void umoscom_cfg_close(struct ucom_softc *); 202static void umoscom_cfg_set_break(struct ucom_softc *, uint8_t); 203static void umoscom_cfg_set_dtr(struct ucom_softc *, uint8_t); 204static void umoscom_cfg_set_rts(struct ucom_softc *, uint8_t); 205static int umoscom_pre_param(struct ucom_softc *, struct termios *); 206static void umoscom_cfg_param(struct ucom_softc *, struct termios *); 207static void umoscom_cfg_get_status(struct ucom_softc *, uint8_t *, 208 uint8_t *); 209static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t); 210static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t); 211static void umoscom_start_read(struct ucom_softc *); 212static void umoscom_stop_read(struct ucom_softc *); 213static void umoscom_start_write(struct ucom_softc *); 214static void umoscom_stop_write(struct ucom_softc *); 215static void umoscom_poll(struct ucom_softc *ucom); 216 217static const struct usb_config umoscom_config_data[UMOSCOM_N_TRANSFER] = { 218 [UMOSCOM_BULK_DT_WR] = { 219 .type = UE_BULK, 220 .endpoint = UE_ADDR_ANY, 221 .direction = UE_DIR_OUT, 222 .bufsize = UMOSCOM_BUFSIZE, 223 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 224 .callback = &umoscom_write_callback, 225 }, 226 227 [UMOSCOM_BULK_DT_RD] = { 228 .type = UE_BULK, 229 .endpoint = UE_ADDR_ANY, 230 .direction = UE_DIR_IN, 231 .bufsize = UMOSCOM_BUFSIZE, 232 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 233 .callback = &umoscom_read_callback, 234 }, 235 236 [UMOSCOM_INTR_DT_RD] = { 237 .type = UE_INTERRUPT, 238 .endpoint = UE_ADDR_ANY, 239 .direction = UE_DIR_IN, 240 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 241 .bufsize = 0, /* use wMaxPacketSize */ 242 .callback = &umoscom_intr_callback, 243 }, 244}; 245 246static const struct ucom_callback umoscom_callback = { 247 /* configuration callbacks */ 248 .ucom_cfg_get_status = &umoscom_cfg_get_status, 249 .ucom_cfg_set_dtr = &umoscom_cfg_set_dtr, 250 .ucom_cfg_set_rts = &umoscom_cfg_set_rts, 251 .ucom_cfg_set_break = &umoscom_cfg_set_break, 252 .ucom_cfg_param = &umoscom_cfg_param, 253 .ucom_cfg_open = &umoscom_cfg_open, 254 .ucom_cfg_close = &umoscom_cfg_close, 255 256 /* other callbacks */ 257 .ucom_pre_param = &umoscom_pre_param, 258 .ucom_start_read = &umoscom_start_read, 259 .ucom_stop_read = &umoscom_stop_read, 260 .ucom_start_write = &umoscom_start_write, 261 .ucom_stop_write = &umoscom_stop_write, 262 .ucom_poll = &umoscom_poll, 263 .ucom_free = &umoscom_free, 264}; 265 266static device_method_t umoscom_methods[] = { 267 DEVMETHOD(device_probe, umoscom_probe), 268 DEVMETHOD(device_attach, umoscom_attach), 269 DEVMETHOD(device_detach, umoscom_detach), 270 DEVMETHOD_END 271}; 272 273static devclass_t umoscom_devclass; 274 275static driver_t umoscom_driver = { 276 .name = "umoscom", 277 .methods = umoscom_methods, 278 .size = sizeof(struct umoscom_softc), 279}; 280 281static const STRUCT_USB_HOST_ID umoscom_devs[] = { 282 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)} 283}; 284 285DRIVER_MODULE(umoscom, uhub, umoscom_driver, umoscom_devclass, NULL, 0); 286MODULE_DEPEND(umoscom, ucom, 1, 1, 1); 287MODULE_DEPEND(umoscom, usb, 1, 1, 1); 288MODULE_VERSION(umoscom, 1); 289USB_PNP_HOST_INFO(umoscom_devs); 290 291static int 292umoscom_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 != UMOSCOM_CONFIG_INDEX) { 300 return (ENXIO); 301 } 302 if (uaa->info.bIfaceIndex != UMOSCOM_IFACE_INDEX) { 303 return (ENXIO); 304 } 305 return (usbd_lookup_id_by_uaa(umoscom_devs, sizeof(umoscom_devs), uaa)); 306} 307 308static int 309umoscom_attach(device_t dev) 310{ 311 struct usb_attach_arg *uaa = device_get_ivars(dev); 312 struct umoscom_softc *sc = device_get_softc(dev); 313 int error; 314 uint8_t iface_index; 315 316 sc->sc_udev = uaa->device; 317 sc->sc_mcr = 0x08; /* enable interrupts */ 318 319 /* XXX the device doesn't provide any ID string, so set a static one */ 320 device_set_desc(dev, "MOSCHIP USB Serial Port Adapter"); 321 device_printf(dev, "<MOSCHIP USB Serial Port Adapter>\n"); 322 323 mtx_init(&sc->sc_mtx, "umoscom", NULL, MTX_DEF); 324 ucom_ref(&sc->sc_super_ucom); 325 326 iface_index = UMOSCOM_IFACE_INDEX; 327 error = usbd_transfer_setup(uaa->device, &iface_index, 328 sc->sc_xfer, umoscom_config_data, 329 UMOSCOM_N_TRANSFER, sc, &sc->sc_mtx); 330 331 if (error) { 332 goto detach; 333 } 334 /* clear stall at first run */ 335 mtx_lock(&sc->sc_mtx); 336 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 337 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 338 mtx_unlock(&sc->sc_mtx); 339 340 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 341 &umoscom_callback, &sc->sc_mtx); 342 if (error) { 343 goto detach; 344 } 345 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 346 347 return (0); 348 349detach: 350 device_printf(dev, "attach error: %s\n", usbd_errstr(error)); 351 umoscom_detach(dev); 352 return (ENXIO); 353} 354 355static int 356umoscom_detach(device_t dev) 357{ 358 struct umoscom_softc *sc = device_get_softc(dev); 359 360 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 361 usbd_transfer_unsetup(sc->sc_xfer, UMOSCOM_N_TRANSFER); 362 363 device_claim_softc(dev); 364 365 umoscom_free_softc(sc); 366 367 return (0); 368} 369 370UCOM_UNLOAD_DRAIN(umoscom); 371 372static void 373umoscom_free_softc(struct umoscom_softc *sc) 374{ 375 if (ucom_unref(&sc->sc_super_ucom)) { 376 mtx_destroy(&sc->sc_mtx); 377 device_free_softc(sc); 378 } 379} 380 381static void 382umoscom_free(struct ucom_softc *ucom) 383{ 384 umoscom_free_softc(ucom->sc_parent); 385} 386 387static void 388umoscom_cfg_open(struct ucom_softc *ucom) 389{ 390 struct umoscom_softc *sc = ucom->sc_parent; 391 392 DPRINTF("\n"); 393 394 /* Purge FIFOs or odd things happen */ 395 umoscom_cfg_write(sc, UMOSCOM_FIFO, 0x00 | UMOSCOM_UART_REG); 396 397 /* Enable FIFO */ 398 umoscom_cfg_write(sc, UMOSCOM_FIFO, UMOSCOM_FIFO_EN | 399 UMOSCOM_FIFO_RXCLR | UMOSCOM_FIFO_TXCLR | 400 UMOSCOM_FIFO_DMA_BLK | UMOSCOM_FIFO_RXLVL_MASK | 401 UMOSCOM_UART_REG); 402 403 /* Enable Interrupt Registers */ 404 umoscom_cfg_write(sc, UMOSCOM_INT, 0x0C | UMOSCOM_UART_REG); 405 406 /* Magic */ 407 umoscom_cfg_write(sc, 0x01, 0x08); 408 409 /* Magic */ 410 umoscom_cfg_write(sc, 0x00, 0x02); 411} 412 413static void 414umoscom_cfg_close(struct ucom_softc *ucom) 415{ 416 return; 417} 418 419static void 420umoscom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 421{ 422 struct umoscom_softc *sc = ucom->sc_parent; 423 uint16_t val; 424 425 val = sc->sc_lcr; 426 if (onoff) 427 val |= UMOSCOM_LCR_BREAK; 428 429 umoscom_cfg_write(sc, UMOSCOM_LCR, val | UMOSCOM_UART_REG); 430} 431 432static void 433umoscom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 434{ 435 struct umoscom_softc *sc = ucom->sc_parent; 436 437 if (onoff) 438 sc->sc_mcr |= UMOSCOM_MCR_DTR; 439 else 440 sc->sc_mcr &= ~UMOSCOM_MCR_DTR; 441 442 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG); 443} 444 445static void 446umoscom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 447{ 448 struct umoscom_softc *sc = ucom->sc_parent; 449 450 if (onoff) 451 sc->sc_mcr |= UMOSCOM_MCR_RTS; 452 else 453 sc->sc_mcr &= ~UMOSCOM_MCR_RTS; 454 455 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG); 456} 457 458static int 459umoscom_pre_param(struct ucom_softc *ucom, struct termios *t) 460{ 461 if ((t->c_ospeed <= 1) || (t->c_ospeed > 115200)) 462 return (EINVAL); 463 464 return (0); 465} 466 467static void 468umoscom_cfg_param(struct ucom_softc *ucom, struct termios *t) 469{ 470 struct umoscom_softc *sc = ucom->sc_parent; 471 uint16_t data; 472 473 DPRINTF("speed=%d\n", t->c_ospeed); 474 475 data = ((uint32_t)UMOSCOM_BAUD_REF) / ((uint32_t)t->c_ospeed); 476 477 if (data == 0) { 478 DPRINTF("invalid baud rate!\n"); 479 return; 480 } 481 umoscom_cfg_write(sc, UMOSCOM_LCR, 482 UMOSCOM_LCR_DIVLATCH_EN | UMOSCOM_UART_REG); 483 484 umoscom_cfg_write(sc, UMOSCOM_BAUDLO, 485 (data & 0xFF) | UMOSCOM_UART_REG); 486 487 umoscom_cfg_write(sc, UMOSCOM_BAUDHI, 488 ((data >> 8) & 0xFF) | UMOSCOM_UART_REG); 489 490 if (t->c_cflag & CSTOPB) 491 data = UMOSCOM_LCR_STOP_BITS_2; 492 else 493 data = UMOSCOM_LCR_STOP_BITS_1; 494 495 if (t->c_cflag & PARENB) { 496 if (t->c_cflag & PARODD) 497 data |= UMOSCOM_LCR_PARITY_ODD; 498 else 499 data |= UMOSCOM_LCR_PARITY_EVEN; 500 } else 501 data |= UMOSCOM_LCR_PARITY_NONE; 502 503 switch (t->c_cflag & CSIZE) { 504 case CS5: 505 data |= UMOSCOM_LCR_DBITS(5); 506 break; 507 case CS6: 508 data |= UMOSCOM_LCR_DBITS(6); 509 break; 510 case CS7: 511 data |= UMOSCOM_LCR_DBITS(7); 512 break; 513 case CS8: 514 data |= UMOSCOM_LCR_DBITS(8); 515 break; 516 } 517 518 sc->sc_lcr = data; 519 umoscom_cfg_write(sc, UMOSCOM_LCR, data | UMOSCOM_UART_REG); 520} 521 522static void 523umoscom_cfg_get_status(struct ucom_softc *ucom, uint8_t *p_lsr, uint8_t *p_msr) 524{ 525 struct umoscom_softc *sc = ucom->sc_parent; 526 uint8_t msr; 527 528 DPRINTFN(5, "\n"); 529 530 /* 531 * Read status registers. MSR bits need translation from ns16550 to 532 * SER_* values. LSR bits are ns16550 in hardware and ucom. 533 */ 534 535 *p_lsr = umoscom_cfg_read(sc, UMOSCOM_LSR); 536 msr = umoscom_cfg_read(sc, UMOSCOM_MSR); 537 538 /* translate bits */ 539 540 if (msr & UMOSCOM_MSR_CTS) 541 *p_msr |= SER_CTS; 542 543 if (msr & UMOSCOM_MSR_CD) 544 *p_msr |= SER_DCD; 545 546 if (msr & UMOSCOM_MSR_RI) 547 *p_msr |= SER_RI; 548 549 if (msr & UMOSCOM_MSR_RTS) 550 *p_msr |= SER_DSR; 551} 552 553static void 554umoscom_cfg_write(struct umoscom_softc *sc, uint16_t reg, uint16_t val) 555{ 556 struct usb_device_request req; 557 558 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 559 req.bRequest = UMOSCOM_WRITE; 560 USETW(req.wValue, val); 561 USETW(req.wIndex, reg); 562 USETW(req.wLength, 0); 563 564 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 565 &req, NULL, 0, 1000); 566} 567 568static uint8_t 569umoscom_cfg_read(struct umoscom_softc *sc, uint16_t reg) 570{ 571 struct usb_device_request req; 572 uint8_t val; 573 574 req.bmRequestType = UT_READ_VENDOR_DEVICE; 575 req.bRequest = UMOSCOM_READ; 576 USETW(req.wValue, 0); 577 USETW(req.wIndex, reg); 578 USETW(req.wLength, 1); 579 580 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 581 &req, &val, 0, 1000); 582 583 DPRINTF("reg=0x%04x, val=0x%02x\n", reg, val); 584 585 return (val); 586} 587 588static void 589umoscom_start_read(struct ucom_softc *ucom) 590{ 591 struct umoscom_softc *sc = ucom->sc_parent; 592 593#if 0 594 /* start interrupt endpoint */ 595 usbd_transfer_start(sc->sc_xfer[UMOSCOM_INTR_DT_RD]); 596#endif 597 /* start read endpoint */ 598 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 599} 600 601static void 602umoscom_stop_read(struct ucom_softc *ucom) 603{ 604 struct umoscom_softc *sc = ucom->sc_parent; 605 606 /* stop interrupt transfer */ 607 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_INTR_DT_RD]); 608 609 /* stop read endpoint */ 610 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 611} 612 613static void 614umoscom_start_write(struct ucom_softc *ucom) 615{ 616 struct umoscom_softc *sc = ucom->sc_parent; 617 618 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 619} 620 621static void 622umoscom_stop_write(struct ucom_softc *ucom) 623{ 624 struct umoscom_softc *sc = ucom->sc_parent; 625 626 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 627} 628 629static void 630umoscom_write_callback(struct usb_xfer *xfer, usb_error_t error) 631{ 632 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 633 struct usb_page_cache *pc; 634 uint32_t actlen; 635 636 switch (USB_GET_STATE(xfer)) { 637 case USB_ST_SETUP: 638 case USB_ST_TRANSFERRED: 639tr_setup: 640 DPRINTF("\n"); 641 642 pc = usbd_xfer_get_frame(xfer, 0); 643 if (ucom_get_data(&sc->sc_ucom, pc, 0, 644 UMOSCOM_BUFSIZE, &actlen)) { 645 usbd_xfer_set_frame_len(xfer, 0, actlen); 646 usbd_transfer_submit(xfer); 647 } 648 return; 649 650 default: /* Error */ 651 if (error != USB_ERR_CANCELLED) { 652 DPRINTFN(0, "transfer failed\n"); 653 /* try to clear stall first */ 654 usbd_xfer_set_stall(xfer); 655 goto tr_setup; 656 } 657 return; 658 } 659} 660 661static void 662umoscom_read_callback(struct usb_xfer *xfer, usb_error_t error) 663{ 664 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 665 struct usb_page_cache *pc; 666 int actlen; 667 668 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 669 670 switch (USB_GET_STATE(xfer)) { 671 case USB_ST_TRANSFERRED: 672 DPRINTF("got %d bytes\n", actlen); 673 pc = usbd_xfer_get_frame(xfer, 0); 674 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 675 676 case USB_ST_SETUP: 677tr_setup: 678 DPRINTF("\n"); 679 680 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 681 usbd_transfer_submit(xfer); 682 return; 683 684 default: /* Error */ 685 if (error != USB_ERR_CANCELLED) { 686 DPRINTFN(0, "transfer failed\n"); 687 /* try to clear stall first */ 688 usbd_xfer_set_stall(xfer); 689 goto tr_setup; 690 } 691 return; 692 } 693} 694 695static void 696umoscom_intr_callback(struct usb_xfer *xfer, usb_error_t error) 697{ 698 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 699 int actlen; 700 701 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 702 703 switch (USB_GET_STATE(xfer)) { 704 case USB_ST_TRANSFERRED: 705 if (actlen < 2) { 706 DPRINTF("too short message\n"); 707 goto tr_setup; 708 } 709 ucom_status_change(&sc->sc_ucom); 710 711 case USB_ST_SETUP: 712tr_setup: 713 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 714 usbd_transfer_submit(xfer); 715 return; 716 717 default: /* Error */ 718 if (error != USB_ERR_CANCELLED) { 719 DPRINTFN(0, "transfer failed\n"); 720 /* try to clear stall first */ 721 usbd_xfer_set_stall(xfer); 722 goto tr_setup; 723 } 724 return; 725 } 726} 727 728static void 729umoscom_poll(struct ucom_softc *ucom) 730{ 731 struct umoscom_softc *sc = ucom->sc_parent; 732 usbd_transfer_poll(sc->sc_xfer, UMOSCOM_N_TRANSFER); 733} 734