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FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/serial/umoscom.c
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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 | CTLFLAG_MPSAFE, 0, 54 "USB umoscom"); 55 SYSCTL_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 168 169 enum { 170 UMOSCOM_BULK_DT_WR, 171 UMOSCOM_BULK_DT_RD, 172 UMOSCOM_INTR_DT_RD, 173 UMOSCOM_N_TRANSFER, 174 }; 175 176 struct 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 */ 189 190 static device_probe_t umoscom_probe; 191 static device_attach_t umoscom_attach; 192 static device_detach_t umoscom_detach; 193 static void umoscom_free_softc(struct umoscom_softc *); 194 195 static usb_callback_t umoscom_write_callback; 196 static usb_callback_t umoscom_read_callback; 197 static usb_callback_t umoscom_intr_callback; 198 199 static void umoscom_free(struct ucom_softc *); 200 static void umoscom_cfg_open(struct ucom_softc *); 201 static void umoscom_cfg_close(struct ucom_softc *); 202 static void umoscom_cfg_set_break(struct ucom_softc *, uint8_t); 203 static void umoscom_cfg_set_dtr(struct ucom_softc *, uint8_t); 204 static void umoscom_cfg_set_rts(struct ucom_softc *, uint8_t); 205 static int umoscom_pre_param(struct ucom_softc *, struct termios *); 206 static void umoscom_cfg_param(struct ucom_softc *, struct termios *); 207 static void umoscom_cfg_get_status(struct ucom_softc *, uint8_t *, 208 uint8_t *); 209 static void umoscom_cfg_write(struct umoscom_softc *, uint16_t, uint16_t); 210 static uint8_t umoscom_cfg_read(struct umoscom_softc *, uint16_t); 211 static void umoscom_start_read(struct ucom_softc *); 212 static void umoscom_stop_read(struct ucom_softc *); 213 static void umoscom_start_write(struct ucom_softc *); 214 static void umoscom_stop_write(struct ucom_softc *); 215 static void umoscom_poll(struct ucom_softc *ucom); 216 217 static 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 }; 245 246 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 driver_t umoscom_driver = { 274 .name = "umoscom", 275 .methods = umoscom_methods, 276 .size = sizeof(struct umoscom_softc), 277 }; 278 279 static const STRUCT_USB_HOST_ID umoscom_devs[] = { 280 {USB_VPI(USB_VENDOR_MOSCHIP, USB_PRODUCT_MOSCHIP_MCS7703, 0)} 281 }; 282 283 DRIVER_MODULE(umoscom, uhub, umoscom_driver, NULL, NULL); 284 MODULE_DEPEND(umoscom, ucom, 1, 1, 1); 285 MODULE_DEPEND(umoscom, usb, 1, 1, 1); 286 MODULE_VERSION(umoscom, 1); 287 USB_PNP_HOST_INFO(umoscom_devs); 288 289 static int 290 umoscom_probe(device_t dev) 291 { 292 struct usb_attach_arg *uaa = device_get_ivars(dev); 293 294 if (uaa->usb_mode != USB_MODE_HOST) { 295 return (ENXIO); 296 } 297 if (uaa->info.bConfigIndex != UMOSCOM_CONFIG_INDEX) { 298 return (ENXIO); 299 } 300 if (uaa->info.bIfaceIndex != UMOSCOM_IFACE_INDEX) { 301 return (ENXIO); 302 } 303 return (usbd_lookup_id_by_uaa(umoscom_devs, sizeof(umoscom_devs), uaa)); 304 } 305 306 static int 307 umoscom_attach(device_t dev) 308 { 309 struct usb_attach_arg *uaa = device_get_ivars(dev); 310 struct umoscom_softc *sc = device_get_softc(dev); 311 int error; 312 uint8_t iface_index; 313 314 sc->sc_udev = uaa->device; 315 sc->sc_mcr = 0x08; /* enable interrupts */ 316 317 /* XXX the device doesn't provide any ID string, so set a static one */ 318 device_set_desc(dev, "MOSCHIP USB Serial Port Adapter"); 319 device_printf(dev, "<MOSCHIP USB Serial Port Adapter>\n"); 320 321 mtx_init(&sc->sc_mtx, "umoscom", NULL, MTX_DEF); 322 ucom_ref(&sc->sc_super_ucom); 323 324 iface_index = UMOSCOM_IFACE_INDEX; 325 error = usbd_transfer_setup(uaa->device, &iface_index, 326 sc->sc_xfer, umoscom_config_data, 327 UMOSCOM_N_TRANSFER, sc, &sc->sc_mtx); 328 329 if (error) { 330 goto detach; 331 } 332 /* clear stall at first run */ 333 mtx_lock(&sc->sc_mtx); 334 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_WR]); 335 usbd_xfer_set_stall(sc->sc_xfer[UMOSCOM_BULK_DT_RD]); 336 mtx_unlock(&sc->sc_mtx); 337 338 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 339 &umoscom_callback, &sc->sc_mtx); 340 if (error) { 341 goto detach; 342 } 343 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 344 345 return (0); 346 347 detach: 348 device_printf(dev, "attach error: %s\n", usbd_errstr(error)); 349 umoscom_detach(dev); 350 return (ENXIO); 351 } 352 353 static int 354 umoscom_detach(device_t dev) 355 { 356 struct umoscom_softc *sc = device_get_softc(dev); 357 358 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 359 usbd_transfer_unsetup(sc->sc_xfer, UMOSCOM_N_TRANSFER); 360 361 device_claim_softc(dev); 362 363 umoscom_free_softc(sc); 364 365 return (0); 366 } 367 368 UCOM_UNLOAD_DRAIN(umoscom); 369 370 static void 371 umoscom_free_softc(struct umoscom_softc *sc) 372 { 373 if (ucom_unref(&sc->sc_super_ucom)) { 374 mtx_destroy(&sc->sc_mtx); 375 device_free_softc(sc); 376 } 377 } 378 379 static void 380 umoscom_free(struct ucom_softc *ucom) 381 { 382 umoscom_free_softc(ucom->sc_parent); 383 } 384 385 static void 386 umoscom_cfg_open(struct ucom_softc *ucom) 387 { 388 struct umoscom_softc *sc = ucom->sc_parent; 389 390 DPRINTF("\n"); 391 392 /* Purge FIFOs or odd things happen */ 393 umoscom_cfg_write(sc, UMOSCOM_FIFO, 0x00 | UMOSCOM_UART_REG); 394 395 /* Enable FIFO */ 396 umoscom_cfg_write(sc, UMOSCOM_FIFO, UMOSCOM_FIFO_EN | 397 UMOSCOM_FIFO_RXCLR | UMOSCOM_FIFO_TXCLR | 398 UMOSCOM_FIFO_DMA_BLK | UMOSCOM_FIFO_RXLVL_MASK | 399 UMOSCOM_UART_REG); 400 401 /* Enable Interrupt Registers */ 402 umoscom_cfg_write(sc, UMOSCOM_INT, 0x0C | UMOSCOM_UART_REG); 403 404 /* Magic */ 405 umoscom_cfg_write(sc, 0x01, 0x08); 406 407 /* Magic */ 408 umoscom_cfg_write(sc, 0x00, 0x02); 409 } 410 411 static void 412 umoscom_cfg_close(struct ucom_softc *ucom) 413 { 414 return; 415 } 416 417 static void 418 umoscom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 419 { 420 struct umoscom_softc *sc = ucom->sc_parent; 421 uint16_t val; 422 423 val = sc->sc_lcr; 424 if (onoff) 425 val |= UMOSCOM_LCR_BREAK; 426 427 umoscom_cfg_write(sc, UMOSCOM_LCR, val | UMOSCOM_UART_REG); 428 } 429 430 static void 431 umoscom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 432 { 433 struct umoscom_softc *sc = ucom->sc_parent; 434 435 if (onoff) 436 sc->sc_mcr |= UMOSCOM_MCR_DTR; 437 else 438 sc->sc_mcr &= ~UMOSCOM_MCR_DTR; 439 440 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG); 441 } 442 443 static void 444 umoscom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 445 { 446 struct umoscom_softc *sc = ucom->sc_parent; 447 448 if (onoff) 449 sc->sc_mcr |= UMOSCOM_MCR_RTS; 450 else 451 sc->sc_mcr &= ~UMOSCOM_MCR_RTS; 452 453 umoscom_cfg_write(sc, UMOSCOM_MCR, sc->sc_mcr | UMOSCOM_UART_REG); 454 } 455 456 static int 457 umoscom_pre_param(struct ucom_softc *ucom, struct termios *t) 458 { 459 if ((t->c_ospeed <= 1) || (t->c_ospeed > 115200)) 460 return (EINVAL); 461 462 return (0); 463 } 464 465 static void 466 umoscom_cfg_param(struct ucom_softc *ucom, struct termios *t) 467 { 468 struct umoscom_softc *sc = ucom->sc_parent; 469 uint16_t data; 470 471 DPRINTF("speed=%d\n", t->c_ospeed); 472 473 data = ((uint32_t)UMOSCOM_BAUD_REF) / ((uint32_t)t->c_ospeed); 474 475 if (data == 0) { 476 DPRINTF("invalid baud rate!\n"); 477 return; 478 } 479 umoscom_cfg_write(sc, UMOSCOM_LCR, 480 UMOSCOM_LCR_DIVLATCH_EN | UMOSCOM_UART_REG); 481 482 umoscom_cfg_write(sc, UMOSCOM_BAUDLO, 483 (data & 0xFF) | UMOSCOM_UART_REG); 484 485 umoscom_cfg_write(sc, UMOSCOM_BAUDHI, 486 ((data >> 8) & 0xFF) | UMOSCOM_UART_REG); 487 488 if (t->c_cflag & CSTOPB) 489 data = UMOSCOM_LCR_STOP_BITS_2; 490 else 491 data = UMOSCOM_LCR_STOP_BITS_1; 492 493 if (t->c_cflag & PARENB) { 494 if (t->c_cflag & PARODD) 495 data |= UMOSCOM_LCR_PARITY_ODD; 496 else 497 data |= UMOSCOM_LCR_PARITY_EVEN; 498 } else 499 data |= UMOSCOM_LCR_PARITY_NONE; 500 501 switch (t->c_cflag & CSIZE) { 502 case CS5: 503 data |= UMOSCOM_LCR_DBITS(5); 504 break; 505 case CS6: 506 data |= UMOSCOM_LCR_DBITS(6); 507 break; 508 case CS7: 509 data |= UMOSCOM_LCR_DBITS(7); 510 break; 511 case CS8: 512 data |= UMOSCOM_LCR_DBITS(8); 513 break; 514 } 515 516 sc->sc_lcr = data; 517 umoscom_cfg_write(sc, UMOSCOM_LCR, data | UMOSCOM_UART_REG); 518 } 519 520 static void 521 umoscom_cfg_get_status(struct ucom_softc *ucom, uint8_t *p_lsr, uint8_t *p_msr) 522 { 523 struct umoscom_softc *sc = ucom->sc_parent; 524 uint8_t msr; 525 526 DPRINTFN(5, "\n"); 527 528 /* 529 * Read status registers. MSR bits need translation from ns16550 to 530 * SER_* values. LSR bits are ns16550 in hardware and ucom. 531 */ 532 533 *p_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 usbd_xfer_set_frame_len(xfer, 0, actlen); 644 usbd_transfer_submit(xfer); 645 } 646 return; 647 648 default: /* Error */ 649 if (error != USB_ERR_CANCELLED) { 650 DPRINTFN(0, "transfer failed\n"); 651 /* try to clear stall first */ 652 usbd_xfer_set_stall(xfer); 653 goto tr_setup; 654 } 655 return; 656 } 657 } 658 659 static void 660 umoscom_read_callback(struct usb_xfer *xfer, usb_error_t error) 661 { 662 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 663 struct usb_page_cache *pc; 664 int actlen; 665 666 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 667 668 switch (USB_GET_STATE(xfer)) { 669 case USB_ST_TRANSFERRED: 670 DPRINTF("got %d bytes\n", actlen); 671 pc = usbd_xfer_get_frame(xfer, 0); 672 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 673 674 case USB_ST_SETUP: 675 tr_setup: 676 DPRINTF("\n"); 677 678 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 679 usbd_transfer_submit(xfer); 680 return; 681 682 default: /* Error */ 683 if (error != USB_ERR_CANCELLED) { 684 DPRINTFN(0, "transfer failed\n"); 685 /* try to clear stall first */ 686 usbd_xfer_set_stall(xfer); 687 goto tr_setup; 688 } 689 return; 690 } 691 } 692 693 static void 694 umoscom_intr_callback(struct usb_xfer *xfer, usb_error_t error) 695 { 696 struct umoscom_softc *sc = usbd_xfer_softc(xfer); 697 int actlen; 698 699 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 700 701 switch (USB_GET_STATE(xfer)) { 702 case USB_ST_TRANSFERRED: 703 if (actlen < 2) { 704 DPRINTF("too short message\n"); 705 goto tr_setup; 706 } 707 ucom_status_change(&sc->sc_ucom); 708 709 case USB_ST_SETUP: 710 tr_setup: 711 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 712 usbd_transfer_submit(xfer); 713 return; 714 715 default: /* Error */ 716 if (error != USB_ERR_CANCELLED) { 717 DPRINTFN(0, "transfer failed\n"); 718 /* try to clear stall first */ 719 usbd_xfer_set_stall(xfer); 720 goto tr_setup; 721 } 722 return; 723 } 724 } 725 726 static void 727 umoscom_poll(struct ucom_softc *ucom) 728 { 729 struct umoscom_softc *sc = ucom->sc_parent; 730 usbd_transfer_poll(sc->sc_xfer, UMOSCOM_N_TRANSFER); 731 }
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