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 51 static int umoscom_debug = 0; 52 53 static SYSCTL_NODE(_hw_usb, OID_AUTO, umoscom, CTLFLAG_RW, 0, "USB umoscom"); 54 SYSCTL_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 167 168 enum { 169 UMOSCOM_BULK_DT_WR, 170 UMOSCOM_BULK_DT_RD, 171 UMOSCOM_INTR_DT_RD, 172 UMOSCOM_N_TRANSFER, 173 }; 174 175 struct 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 */ 188 189 static device_probe_t umoscom_probe; 190 static device_attach_t umoscom_attach; 191 static device_detach_t umoscom_detach; 192 static void umoscom_free_softc(struct umoscom_softc *); 193 194 static usb_callback_t umoscom_write_callback; 195 static usb_callback_t umoscom_read_callback; 196 static usb_callback_t umoscom_intr_callback; 197 198 static void umoscom_free(struct ucom_softc *); 199 static void umoscom_cfg_open(struct ucom_softc *); 200 static void umoscom_cfg_close(struct ucom_softc *); 201 static void umoscom_cfg_set_break(struct ucom_softc *, uint8_t); 202 static void umoscom_cfg_set_dtr(struct ucom_softc *, uint8_t); 203 static void umoscom_cfg_set_rts(struct ucom_softc *, uint8_t); 204 static int umoscom_pre_param(struct ucom_softc *, struct termios *); 205 static void umoscom_cfg_param(struct ucom_softc *, struct termios *); 206 static void umoscom_cfg_get_status(struct ucom_softc *, uint8_t *, 207 uint8_t *); 208 static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t); 209 static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t); 210 static void umoscom_start_read(struct ucom_softc *); 211 static void umoscom_stop_read(struct ucom_softc *); 212 static void umoscom_start_write(struct ucom_softc *); 213 static void umoscom_stop_write(struct ucom_softc *); 214 static void umoscom_poll(struct ucom_softc *ucom); 215 216 static const struct usb_config umoscom_config_data[UMOSCOM_N_TRANSFER] = { 217 218 [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 }; 245 246 static 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 }; 265 266 static 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 }; 272 273 static devclass_t umoscom_devclass; 274 275 static driver_t umoscom_driver = { 276 .name = "umoscom", 277 .methods = umoscom_methods, 278 .size = sizeof(struct umoscom_softc), 279 }; 280 281 static const STRUCT_USB_HOST_ID umoscom_devs[] = { 282 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)} 283 }; 284 285 DRIVER_MODULE(umoscom, uhub, umoscom_driver, umoscom_devclass, NULL, 0); 286 MODULE_DEPEND(umoscom, ucom, 1, 1, 1); 287 MODULE_DEPEND(umoscom, usb, 1, 1, 1); 288 MODULE_VERSION(umoscom, 1); 289 USB_PNP_HOST_INFO(umoscom_devs); 290 291 static int 292 umoscom_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 } 307 308 static int 309 umoscom_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); 348 349 detach: 350 device_printf(dev, "attach error: %s\n", usbd_errstr(error)); 351 umoscom_detach(dev); 352 return (ENXIO); 353 } 354 355 static int 356 umoscom_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 } 369 370 UCOM_UNLOAD_DRAIN(umoscom); 371 372 static void 373 umoscom_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 } 380 381 static void 382 umoscom_free(struct ucom_softc *ucom) 383 { 384 umoscom_free_softc(ucom->sc_parent); 385 } 386 387 static void 388 umoscom_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 } 412 413 static void 414 umoscom_cfg_close(struct ucom_softc *ucom) 415 { 416 return; 417 } 418 419 static void 420 umoscom_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 } 431 432 static void 433 umoscom_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 } 444 445 static void 446 umoscom_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 } 457 458 static int 459 umoscom_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 } 466 467 static void 468 umoscom_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 } 521 522 static void 523 umoscom_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 lsr; 527 uint8_t msr; 528 529 DPRINTFN(5, "\n"); 530 531 /* read status registers */ 532 533 lsr = umoscom_cfg_read(sc, UMOSCOM_LSR); 534 msr = umoscom_cfg_read(sc, UMOSCOM_MSR); 535 536 /* translate bits */ 537 538 if (msr & UMOSCOM_MSR_CTS) 539 *p_msr |= SER_CTS; 540 541 if (msr & UMOSCOM_MSR_CD) 542 *p_msr |= SER_DCD; 543 544 if (msr & UMOSCOM_MSR_RI) 545 *p_msr |= SER_RI; 546 547 if (msr & UMOSCOM_MSR_RTS) 548 *p_msr |= SER_DSR; 549 } 550 551 static void 552 umoscom_cfg_write(struct umoscom_softc *sc, uint16_t reg, uint16_t val) 553 { 554 struct usb_device_request req; 555 556 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 557 req.bRequest = UMOSCOM_WRITE; 558 USETW(req.wValue, val); 559 USETW(req.wIndex, reg); 560 USETW(req.wLength, 0); 561 562 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 563 &req, NULL, 0, 1000); 564 } 565 566 static uint8_t 567 umoscom_cfg_read(struct umoscom_softc *sc, uint16_t reg) 568 { 569 struct usb_device_request req; 570 uint8_t val; 571 572 req.bmRequestType = UT_READ_VENDOR_DEVICE; 573 req.bRequest = UMOSCOM_READ; 574 USETW(req.wValue, 0); 575 USETW(req.wIndex, reg); 576 USETW(req.wLength, 1); 577 578 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 579 &req, &val, 0, 1000); 580 581 DPRINTF("reg=0x%04x, val=0x%02x\n", reg, val); 582 583 return (val); 584 } 585 586 static void 587 umoscom_start_read(struct ucom_softc *ucom) 588 { 589 struct umoscom_softc *sc = ucom->sc_parent; 590 591 #if 0 592 /* start interrupt endpoint */ 593 usbd_transfer_start(sc->sc_xfer[UMOSCOM_INTR_DT_RD]); 594 #endif 595 /* start read endpoint */ 596 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 597 } 598 599 static void 600 umoscom_stop_read(struct ucom_softc *ucom) 601 { 602 struct umoscom_softc *sc = ucom->sc_parent; 603 604 /* stop interrupt transfer */ 605 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_INTR_DT_RD]); 606 607 /* stop read endpoint */ 608 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 609 } 610 611 static void 612 umoscom_start_write(struct ucom_softc *ucom) 613 { 614 struct umoscom_softc *sc = ucom->sc_parent; 615 616 usbd_transfer_start(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 617 } 618 619 static void 620 umoscom_stop_write(struct ucom_softc *ucom) 621 { 622 struct umoscom_softc *sc = ucom->sc_parent; 623 624 usbd_transfer_stop(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 625 } 626 627 static void 628 umoscom_write_callback(struct usb_xfer *xfer, usb_error_t error) 629 { 630 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 631 struct usb_page_cache *pc; 632 uint32_t actlen; 633 634 switch (USB_GET_STATE(xfer)) { 635 case USB_ST_SETUP: 636 case USB_ST_TRANSFERRED: 637 tr_setup: 638 DPRINTF("\n"); 639 640 pc = usbd_xfer_get_frame(xfer, 0); 641 if (ucom_get_data(&sc->sc_ucom, pc, 0, 642 UMOSCOM_BUFSIZE, &actlen)) { 643 644 usbd_xfer_set_frame_len(xfer, 0, actlen); 645 usbd_transfer_submit(xfer); 646 } 647 return; 648 649 default: /* Error */ 650 if (error != USB_ERR_CANCELLED) { 651 DPRINTFN(0, "transfer failed\n"); 652 /* try to clear stall first */ 653 usbd_xfer_set_stall(xfer); 654 goto tr_setup; 655 } 656 return; 657 } 658 } 659 660 static void 661 umoscom_read_callback(struct usb_xfer *xfer, usb_error_t error) 662 { 663 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 664 struct usb_page_cache *pc; 665 int actlen; 666 667 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 668 669 switch (USB_GET_STATE(xfer)) { 670 case USB_ST_TRANSFERRED: 671 DPRINTF("got %d bytes\n", actlen); 672 pc = usbd_xfer_get_frame(xfer, 0); 673 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 674 675 case USB_ST_SETUP: 676 tr_setup: 677 DPRINTF("\n"); 678 679 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 680 usbd_transfer_submit(xfer); 681 return; 682 683 default: /* Error */ 684 if (error != USB_ERR_CANCELLED) { 685 DPRINTFN(0, "transfer failed\n"); 686 /* try to clear stall first */ 687 usbd_xfer_set_stall(xfer); 688 goto tr_setup; 689 } 690 return; 691 } 692 } 693 694 static void 695 umoscom_intr_callback(struct usb_xfer *xfer, usb_error_t error) 696 { 697 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 698 int actlen; 699 700 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 701 702 switch (USB_GET_STATE(xfer)) { 703 case USB_ST_TRANSFERRED: 704 if (actlen < 2) { 705 DPRINTF("too short message\n"); 706 goto tr_setup; 707 } 708 ucom_status_change(&sc->sc_ucom); 709 710 case USB_ST_SETUP: 711 tr_setup: 712 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 713 usbd_transfer_submit(xfer); 714 return; 715 716 default: /* Error */ 717 if (error != USB_ERR_CANCELLED) { 718 DPRINTFN(0, "transfer failed\n"); 719 /* try to clear stall first */ 720 usbd_xfer_set_stall(xfer); 721 goto tr_setup; 722 } 723 return; 724 } 725 } 726 727 static void 728 umoscom_poll(struct ucom_softc *ucom) 729 { 730 struct umoscom_softc *sc = ucom->sc_parent; 731 usbd_transfer_poll(sc->sc_xfer, UMOSCOM_N_TRANSFER); 732 } 733