1 /* $NetBSD: uftdi.c,v 1.13 2002/09/23 05:51:23 simonb Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart@augustsson.net). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 /* 36 * NOTE: all function names beginning like "uftdi_cfg_" can only 37 * be called from within the config thread function ! 38 */ 39 40 /* 41 * FTDI FT8U100AX serial adapter driver 42 */ 43 44 #include <sys/stdint.h> 45 #include <sys/stddef.h> 46 #include <sys/param.h> 47 #include <sys/queue.h> 48 #include <sys/types.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/bus.h> 52 #include <sys/linker_set.h> 53 #include <sys/module.h> 54 #include <sys/lock.h> 55 #include <sys/mutex.h> 56 #include <sys/condvar.h> 57 #include <sys/sysctl.h> 58 #include <sys/sx.h> 59 #include <sys/unistd.h> 60 #include <sys/callout.h> 61 #include <sys/malloc.h> 62 #include <sys/priv.h> 63 64 #include <dev/usb/usb.h> 65 #include <dev/usb/usbdi.h> 66 #include <dev/usb/usbdi_util.h> 67 #include "usbdevs.h" 68 69 #define USB_DEBUG_VAR uftdi_debug 70 #include <dev/usb/usb_debug.h> 71 #include <dev/usb/usb_process.h> 72 73 #include <dev/usb/serial/usb_serial.h> 74 #include <dev/usb/serial/uftdi_reg.h> 75 76 #ifdef USB_DEBUG 77 static int uftdi_debug = 0; 78 79 SYSCTL_NODE(_hw_usb, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi"); 80 SYSCTL_INT(_hw_usb_uftdi, OID_AUTO, debug, CTLFLAG_RW, 81 &uftdi_debug, 0, "Debug level"); 82 #endif 83 84 #define UFTDI_CONFIG_INDEX 0 85 #define UFTDI_IFACE_INDEX 0 86 87 #define UFTDI_OBUFSIZE 64 /* bytes, cannot be increased due to 88 * do size encoding */ 89 90 enum { 91 UFTDI_BULK_DT_WR, 92 UFTDI_BULK_DT_RD, 93 UFTDI_N_TRANSFER, 94 }; 95 96 struct uftdi_softc { 97 struct ucom_super_softc sc_super_ucom; 98 struct ucom_softc sc_ucom; 99 100 struct usb_device *sc_udev; 101 struct usb_xfer *sc_xfer[UFTDI_N_TRANSFER]; 102 device_t sc_dev; 103 struct mtx sc_mtx; 104 105 uint32_t sc_unit; 106 enum uftdi_type sc_type; 107 108 uint16_t sc_last_lcr; 109 110 uint8_t sc_iface_index; 111 uint8_t sc_hdrlen; 112 uint8_t sc_msr; 113 uint8_t sc_lsr; 114 115 uint8_t sc_name[16]; 116 }; 117 118 struct uftdi_param_config { 119 uint16_t rate; 120 uint16_t lcr; 121 uint8_t v_start; 122 uint8_t v_stop; 123 uint8_t v_flow; 124 }; 125 126 /* prototypes */ 127 128 static device_probe_t uftdi_probe; 129 static device_attach_t uftdi_attach; 130 static device_detach_t uftdi_detach; 131 132 static usb_callback_t uftdi_write_callback; 133 static usb_callback_t uftdi_read_callback; 134 135 static void uftdi_cfg_open(struct ucom_softc *); 136 static void uftdi_cfg_set_dtr(struct ucom_softc *, uint8_t); 137 static void uftdi_cfg_set_rts(struct ucom_softc *, uint8_t); 138 static void uftdi_cfg_set_break(struct ucom_softc *, uint8_t); 139 static int uftdi_set_parm_soft(struct termios *, 140 struct uftdi_param_config *, uint8_t); 141 static int uftdi_pre_param(struct ucom_softc *, struct termios *); 142 static void uftdi_cfg_param(struct ucom_softc *, struct termios *); 143 static void uftdi_cfg_get_status(struct ucom_softc *, uint8_t *, 144 uint8_t *); 145 static void uftdi_start_read(struct ucom_softc *); 146 static void uftdi_stop_read(struct ucom_softc *); 147 static void uftdi_start_write(struct ucom_softc *); 148 static void uftdi_stop_write(struct ucom_softc *); 149 static uint8_t uftdi_8u232am_getrate(uint32_t, uint16_t *); 150 static void uftdi_poll(struct ucom_softc *ucom); 151 152 static const struct usb_config uftdi_config[UFTDI_N_TRANSFER] = { 153 154 [UFTDI_BULK_DT_WR] = { 155 .type = UE_BULK, 156 .endpoint = UE_ADDR_ANY, 157 .direction = UE_DIR_OUT, 158 .bufsize = UFTDI_OBUFSIZE, 159 .flags = {.pipe_bof = 1,}, 160 .callback = &uftdi_write_callback, 161 }, 162 163 [UFTDI_BULK_DT_RD] = { 164 .type = UE_BULK, 165 .endpoint = UE_ADDR_ANY, 166 .direction = UE_DIR_IN, 167 .bufsize = 0, /* use wMaxPacketSize */ 168 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 169 .callback = &uftdi_read_callback, 170 }, 171 }; 172 173 static const struct ucom_callback uftdi_callback = { 174 .ucom_cfg_get_status = &uftdi_cfg_get_status, 175 .ucom_cfg_set_dtr = &uftdi_cfg_set_dtr, 176 .ucom_cfg_set_rts = &uftdi_cfg_set_rts, 177 .ucom_cfg_set_break = &uftdi_cfg_set_break, 178 .ucom_cfg_param = &uftdi_cfg_param, 179 .ucom_cfg_open = &uftdi_cfg_open, 180 .ucom_pre_param = &uftdi_pre_param, 181 .ucom_start_read = &uftdi_start_read, 182 .ucom_stop_read = &uftdi_stop_read, 183 .ucom_start_write = &uftdi_start_write, 184 .ucom_stop_write = &uftdi_stop_write, 185 .ucom_poll = &uftdi_poll, 186 }; 187 188 static device_method_t uftdi_methods[] = { 189 /* Device interface */ 190 DEVMETHOD(device_probe, uftdi_probe), 191 DEVMETHOD(device_attach, uftdi_attach), 192 DEVMETHOD(device_detach, uftdi_detach), 193 194 {0, 0} 195 }; 196 197 static devclass_t uftdi_devclass; 198 199 static driver_t uftdi_driver = { 200 .name = "uftdi", 201 .methods = uftdi_methods, 202 .size = sizeof(struct uftdi_softc), 203 }; 204 205 DRIVER_MODULE(uftdi, uhub, uftdi_driver, uftdi_devclass, NULL, 0); 206 MODULE_DEPEND(uftdi, ucom, 1, 1, 1); 207 MODULE_DEPEND(uftdi, usb, 1, 1, 1); 208 MODULE_VERSION(uftdi, 1); 209 210 static struct usb_device_id uftdi_devs[] = { 211 #define UFTDI_DEV(v,p,t) \ 212 { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, UFTDI_TYPE_##t) } 213 UFTDI_DEV(ATMEL, STK541, 8U232AM), 214 UFTDI_DEV(DRESDENELEKTRONIK, SENSORTERMINALBOARD, 8U232AM), 215 UFTDI_DEV(DRESDENELEKTRONIK, WIRELESSHANDHELDTERMINAL, 8U232AM), 216 UFTDI_DEV(FTDI, GAMMASCOUT, 8U232AM), 217 UFTDI_DEV(FTDI, SERIAL_8U100AX, SIO), 218 UFTDI_DEV(FTDI, SERIAL_2232C, 8U232AM), 219 UFTDI_DEV(FTDI, SERIAL_2232D, 8U232AM), 220 UFTDI_DEV(FTDI, SERIAL_4232H, 8U232AM), 221 UFTDI_DEV(FTDI, SERIAL_8U232AM, 8U232AM), 222 UFTDI_DEV(FTDI, SERIAL_8U232AM4, 8U232AM), 223 UFTDI_DEV(FTDI, SEMC_DSS20, 8U232AM), 224 UFTDI_DEV(FTDI, CFA_631, 8U232AM), 225 UFTDI_DEV(FTDI, CFA_632, 8U232AM), 226 UFTDI_DEV(FTDI, CFA_633, 8U232AM), 227 UFTDI_DEV(FTDI, CFA_634, 8U232AM), 228 UFTDI_DEV(FTDI, CFA_635, 8U232AM), 229 UFTDI_DEV(FTDI, USB_UIRT, 8U232AM), 230 UFTDI_DEV(FTDI, USBSERIAL, 8U232AM), 231 UFTDI_DEV(FTDI, KBS, 8U232AM), 232 UFTDI_DEV(FTDI, MX2_3, 8U232AM), 233 UFTDI_DEV(FTDI, MX4_5, 8U232AM), 234 UFTDI_DEV(FTDI, LK202, 8U232AM), 235 UFTDI_DEV(FTDI, LK204, 8U232AM), 236 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13M, 8U232AM), 237 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13S, 8U232AM), 238 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13U, 8U232AM), 239 UFTDI_DEV(FTDI, EISCOU, 8U232AM), 240 UFTDI_DEV(FTDI, UOPTBR, 8U232AM), 241 UFTDI_DEV(FTDI, EMCU2D, 8U232AM), 242 UFTDI_DEV(FTDI, PCMSFU, 8U232AM), 243 UFTDI_DEV(FTDI, EMCU2H, 8U232AM), 244 UFTDI_DEV(FTDI, MAXSTREAM, 8U232AM), 245 UFTDI_DEV(FTDI, CTI_USB_NANO_485, 8U232AM), 246 UFTDI_DEV(FTDI, CTI_USB_MINI_485, 8U232AM), 247 UFTDI_DEV(SIIG2, US2308, 8U232AM), 248 UFTDI_DEV(INTREPIDCS, VALUECAN, 8U232AM), 249 UFTDI_DEV(INTREPIDCS, NEOVI, 8U232AM), 250 UFTDI_DEV(BBELECTRONICS, USOTL4, 8U232AM), 251 UFTDI_DEV(MATRIXORBITAL, MOUA, 8U232AM), 252 UFTDI_DEV(MARVELL, SHEEVAPLUG, 8U232AM), 253 UFTDI_DEV(MELCO, PCOPRS1, 8U232AM), 254 UFTDI_DEV(RATOC, REXUSB60F, 8U232AM), 255 #undef UFTDI_DEV 256 }; 257 258 static int 259 uftdi_probe(device_t dev) 260 { 261 struct usb_attach_arg *uaa = device_get_ivars(dev); 262 263 if (uaa->usb_mode != USB_MODE_HOST) { 264 return (ENXIO); 265 } 266 if (uaa->info.bConfigIndex != UFTDI_CONFIG_INDEX) { 267 return (ENXIO); 268 } 269 /* attach to all present interfaces */ 270 271 return (usbd_lookup_id_by_uaa(uftdi_devs, sizeof(uftdi_devs), uaa)); 272 } 273 274 static int 275 uftdi_attach(device_t dev) 276 { 277 struct usb_attach_arg *uaa = device_get_ivars(dev); 278 struct uftdi_softc *sc = device_get_softc(dev); 279 int error; 280 281 sc->sc_udev = uaa->device; 282 sc->sc_dev = dev; 283 sc->sc_unit = device_get_unit(dev); 284 285 device_set_usb_desc(dev); 286 mtx_init(&sc->sc_mtx, "uftdi", NULL, MTX_DEF); 287 288 snprintf(sc->sc_name, sizeof(sc->sc_name), 289 "%s", device_get_nameunit(dev)); 290 291 DPRINTF("\n"); 292 293 sc->sc_iface_index = uaa->info.bIfaceIndex; 294 sc->sc_type = USB_GET_DRIVER_INFO(uaa); 295 296 switch (sc->sc_type) { 297 case UFTDI_TYPE_SIO: 298 sc->sc_hdrlen = 1; 299 break; 300 case UFTDI_TYPE_8U232AM: 301 default: 302 sc->sc_hdrlen = 0; 303 break; 304 } 305 306 error = usbd_transfer_setup(uaa->device, 307 &sc->sc_iface_index, sc->sc_xfer, uftdi_config, 308 UFTDI_N_TRANSFER, sc, &sc->sc_mtx); 309 310 if (error) { 311 device_printf(dev, "allocating USB " 312 "transfers failed\n"); 313 goto detach; 314 } 315 sc->sc_ucom.sc_portno = FTDI_PIT_SIOA + uaa->info.bIfaceNum; 316 317 /* clear stall at first run */ 318 mtx_lock(&sc->sc_mtx); 319 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_WR]); 320 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_RD]); 321 mtx_unlock(&sc->sc_mtx); 322 323 /* set a valid "lcr" value */ 324 325 sc->sc_last_lcr = 326 (FTDI_SIO_SET_DATA_STOP_BITS_2 | 327 FTDI_SIO_SET_DATA_PARITY_NONE | 328 FTDI_SIO_SET_DATA_BITS(8)); 329 330 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 331 &uftdi_callback, &sc->sc_mtx); 332 if (error) { 333 goto detach; 334 } 335 return (0); /* success */ 336 337 detach: 338 uftdi_detach(dev); 339 return (ENXIO); 340 } 341 342 static int 343 uftdi_detach(device_t dev) 344 { 345 struct uftdi_softc *sc = device_get_softc(dev); 346 347 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 348 usbd_transfer_unsetup(sc->sc_xfer, UFTDI_N_TRANSFER); 349 mtx_destroy(&sc->sc_mtx); 350 351 return (0); 352 } 353 354 static void 355 uftdi_cfg_open(struct ucom_softc *ucom) 356 { 357 struct uftdi_softc *sc = ucom->sc_parent; 358 uint16_t wIndex = ucom->sc_portno; 359 struct usb_device_request req; 360 361 DPRINTF(""); 362 363 /* perform a full reset on the device */ 364 365 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 366 req.bRequest = FTDI_SIO_RESET; 367 USETW(req.wValue, FTDI_SIO_RESET_SIO); 368 USETW(req.wIndex, wIndex); 369 USETW(req.wLength, 0); 370 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 371 &req, NULL, 0, 1000); 372 373 /* turn on RTS/CTS flow control */ 374 375 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 376 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 377 USETW(req.wValue, 0); 378 USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, wIndex); 379 USETW(req.wLength, 0); 380 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 381 &req, NULL, 0, 1000); 382 383 /* 384 * NOTE: with the new UCOM layer there will always be a 385 * "uftdi_cfg_param()" call after "open()", so there is no need for 386 * "open()" to configure anything 387 */ 388 } 389 390 static void 391 uftdi_write_callback(struct usb_xfer *xfer, usb_error_t error) 392 { 393 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 394 struct usb_page_cache *pc; 395 uint32_t actlen; 396 uint8_t buf[1]; 397 398 switch (USB_GET_STATE(xfer)) { 399 case USB_ST_SETUP: 400 case USB_ST_TRANSFERRED: 401 tr_setup: 402 pc = usbd_xfer_get_frame(xfer, 0); 403 if (ucom_get_data(&sc->sc_ucom, pc, 404 sc->sc_hdrlen, UFTDI_OBUFSIZE - sc->sc_hdrlen, 405 &actlen)) { 406 407 if (sc->sc_hdrlen > 0) { 408 buf[0] = 409 FTDI_OUT_TAG(actlen, sc->sc_ucom.sc_portno); 410 usbd_copy_in(pc, 0, buf, 1); 411 } 412 usbd_xfer_set_frame_len(xfer, 0, actlen + sc->sc_hdrlen); 413 usbd_transfer_submit(xfer); 414 } 415 return; 416 417 default: /* Error */ 418 if (error != USB_ERR_CANCELLED) { 419 /* try to clear stall first */ 420 usbd_xfer_set_stall(xfer); 421 goto tr_setup; 422 } 423 return; 424 } 425 } 426 427 static void 428 uftdi_read_callback(struct usb_xfer *xfer, usb_error_t error) 429 { 430 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 431 struct usb_page_cache *pc; 432 uint8_t buf[2]; 433 uint8_t ftdi_msr; 434 uint8_t msr; 435 uint8_t lsr; 436 int actlen; 437 438 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 439 440 switch (USB_GET_STATE(xfer)) { 441 case USB_ST_TRANSFERRED: 442 443 if (actlen < 2) { 444 goto tr_setup; 445 } 446 pc = usbd_xfer_get_frame(xfer, 0); 447 usbd_copy_out(pc, 0, buf, 2); 448 449 ftdi_msr = FTDI_GET_MSR(buf); 450 lsr = FTDI_GET_LSR(buf); 451 452 msr = 0; 453 if (ftdi_msr & FTDI_SIO_CTS_MASK) 454 msr |= SER_CTS; 455 if (ftdi_msr & FTDI_SIO_DSR_MASK) 456 msr |= SER_DSR; 457 if (ftdi_msr & FTDI_SIO_RI_MASK) 458 msr |= SER_RI; 459 if (ftdi_msr & FTDI_SIO_RLSD_MASK) 460 msr |= SER_DCD; 461 462 if ((sc->sc_msr != msr) || 463 ((sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK))) { 464 DPRINTF("status change msr=0x%02x (0x%02x) " 465 "lsr=0x%02x (0x%02x)\n", msr, sc->sc_msr, 466 lsr, sc->sc_lsr); 467 468 sc->sc_msr = msr; 469 sc->sc_lsr = lsr; 470 471 ucom_status_change(&sc->sc_ucom); 472 } 473 actlen -= 2; 474 475 if (actlen > 0) { 476 ucom_put_data(&sc->sc_ucom, pc, 2, actlen); 477 } 478 case USB_ST_SETUP: 479 tr_setup: 480 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 481 usbd_transfer_submit(xfer); 482 return; 483 484 default: /* Error */ 485 if (error != USB_ERR_CANCELLED) { 486 /* try to clear stall first */ 487 usbd_xfer_set_stall(xfer); 488 goto tr_setup; 489 } 490 return; 491 } 492 } 493 494 static void 495 uftdi_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 496 { 497 struct uftdi_softc *sc = ucom->sc_parent; 498 uint16_t wIndex = ucom->sc_portno; 499 uint16_t wValue; 500 struct usb_device_request req; 501 502 wValue = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW; 503 504 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 505 req.bRequest = FTDI_SIO_MODEM_CTRL; 506 USETW(req.wValue, wValue); 507 USETW(req.wIndex, wIndex); 508 USETW(req.wLength, 0); 509 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 510 &req, NULL, 0, 1000); 511 } 512 513 static void 514 uftdi_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 515 { 516 struct uftdi_softc *sc = ucom->sc_parent; 517 uint16_t wIndex = ucom->sc_portno; 518 uint16_t wValue; 519 struct usb_device_request req; 520 521 wValue = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW; 522 523 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 524 req.bRequest = FTDI_SIO_MODEM_CTRL; 525 USETW(req.wValue, wValue); 526 USETW(req.wIndex, wIndex); 527 USETW(req.wLength, 0); 528 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 529 &req, NULL, 0, 1000); 530 } 531 532 static void 533 uftdi_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 534 { 535 struct uftdi_softc *sc = ucom->sc_parent; 536 uint16_t wIndex = ucom->sc_portno; 537 uint16_t wValue; 538 struct usb_device_request req; 539 540 if (onoff) { 541 sc->sc_last_lcr |= FTDI_SIO_SET_BREAK; 542 } else { 543 sc->sc_last_lcr &= ~FTDI_SIO_SET_BREAK; 544 } 545 546 wValue = sc->sc_last_lcr; 547 548 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 549 req.bRequest = FTDI_SIO_SET_DATA; 550 USETW(req.wValue, wValue); 551 USETW(req.wIndex, wIndex); 552 USETW(req.wLength, 0); 553 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 554 &req, NULL, 0, 1000); 555 } 556 557 static int 558 uftdi_set_parm_soft(struct termios *t, 559 struct uftdi_param_config *cfg, uint8_t type) 560 { 561 bzero(cfg, sizeof(*cfg)); 562 563 switch (type) { 564 case UFTDI_TYPE_SIO: 565 switch (t->c_ospeed) { 566 case 300: 567 cfg->rate = ftdi_sio_b300; 568 break; 569 case 600: 570 cfg->rate = ftdi_sio_b600; 571 break; 572 case 1200: 573 cfg->rate = ftdi_sio_b1200; 574 break; 575 case 2400: 576 cfg->rate = ftdi_sio_b2400; 577 break; 578 case 4800: 579 cfg->rate = ftdi_sio_b4800; 580 break; 581 case 9600: 582 cfg->rate = ftdi_sio_b9600; 583 break; 584 case 19200: 585 cfg->rate = ftdi_sio_b19200; 586 break; 587 case 38400: 588 cfg->rate = ftdi_sio_b38400; 589 break; 590 case 57600: 591 cfg->rate = ftdi_sio_b57600; 592 break; 593 case 115200: 594 cfg->rate = ftdi_sio_b115200; 595 break; 596 default: 597 return (EINVAL); 598 } 599 break; 600 601 case UFTDI_TYPE_8U232AM: 602 if (uftdi_8u232am_getrate(t->c_ospeed, &cfg->rate)) { 603 return (EINVAL); 604 } 605 break; 606 } 607 608 if (t->c_cflag & CSTOPB) 609 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_2; 610 else 611 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_1; 612 613 if (t->c_cflag & PARENB) { 614 if (t->c_cflag & PARODD) { 615 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_ODD; 616 } else { 617 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_EVEN; 618 } 619 } else { 620 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_NONE; 621 } 622 623 switch (t->c_cflag & CSIZE) { 624 case CS5: 625 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(5); 626 break; 627 628 case CS6: 629 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(6); 630 break; 631 632 case CS7: 633 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(7); 634 break; 635 636 case CS8: 637 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(8); 638 break; 639 } 640 641 if (t->c_cflag & CRTSCTS) { 642 cfg->v_flow = FTDI_SIO_RTS_CTS_HS; 643 } else if (t->c_iflag & (IXON | IXOFF)) { 644 cfg->v_flow = FTDI_SIO_XON_XOFF_HS; 645 cfg->v_start = t->c_cc[VSTART]; 646 cfg->v_stop = t->c_cc[VSTOP]; 647 } else { 648 cfg->v_flow = FTDI_SIO_DISABLE_FLOW_CTRL; 649 } 650 651 return (0); 652 } 653 654 static int 655 uftdi_pre_param(struct ucom_softc *ucom, struct termios *t) 656 { 657 struct uftdi_softc *sc = ucom->sc_parent; 658 struct uftdi_param_config cfg; 659 660 DPRINTF("\n"); 661 662 return (uftdi_set_parm_soft(t, &cfg, sc->sc_type)); 663 } 664 665 static void 666 uftdi_cfg_param(struct ucom_softc *ucom, struct termios *t) 667 { 668 struct uftdi_softc *sc = ucom->sc_parent; 669 uint16_t wIndex = ucom->sc_portno; 670 struct uftdi_param_config cfg; 671 struct usb_device_request req; 672 673 if (uftdi_set_parm_soft(t, &cfg, sc->sc_type)) { 674 /* should not happen */ 675 return; 676 } 677 sc->sc_last_lcr = cfg.lcr; 678 679 DPRINTF("\n"); 680 681 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 682 req.bRequest = FTDI_SIO_SET_BAUD_RATE; 683 USETW(req.wValue, cfg.rate); 684 USETW(req.wIndex, wIndex); 685 USETW(req.wLength, 0); 686 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 687 &req, NULL, 0, 1000); 688 689 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 690 req.bRequest = FTDI_SIO_SET_DATA; 691 USETW(req.wValue, cfg.lcr); 692 USETW(req.wIndex, wIndex); 693 USETW(req.wLength, 0); 694 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 695 &req, NULL, 0, 1000); 696 697 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 698 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 699 USETW2(req.wValue, cfg.v_stop, cfg.v_start); 700 USETW2(req.wIndex, cfg.v_flow, wIndex); 701 USETW(req.wLength, 0); 702 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 703 &req, NULL, 0, 1000); 704 } 705 706 static void 707 uftdi_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 708 { 709 struct uftdi_softc *sc = ucom->sc_parent; 710 711 DPRINTF("msr=0x%02x lsr=0x%02x\n", 712 sc->sc_msr, sc->sc_lsr); 713 714 *msr = sc->sc_msr; 715 *lsr = sc->sc_lsr; 716 } 717 718 static void 719 uftdi_start_read(struct ucom_softc *ucom) 720 { 721 struct uftdi_softc *sc = ucom->sc_parent; 722 723 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_RD]); 724 } 725 726 static void 727 uftdi_stop_read(struct ucom_softc *ucom) 728 { 729 struct uftdi_softc *sc = ucom->sc_parent; 730 731 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_RD]); 732 } 733 734 static void 735 uftdi_start_write(struct ucom_softc *ucom) 736 { 737 struct uftdi_softc *sc = ucom->sc_parent; 738 739 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_WR]); 740 } 741 742 static void 743 uftdi_stop_write(struct ucom_softc *ucom) 744 { 745 struct uftdi_softc *sc = ucom->sc_parent; 746 747 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_WR]); 748 } 749 750 /*------------------------------------------------------------------------* 751 * uftdi_8u232am_getrate 752 * 753 * Return values: 754 * 0: Success 755 * Else: Failure 756 *------------------------------------------------------------------------*/ 757 static uint8_t 758 uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate) 759 { 760 /* Table of the nearest even powers-of-2 for values 0..15. */ 761 static const uint8_t roundoff[16] = { 762 0, 2, 2, 4, 4, 4, 8, 8, 763 8, 8, 8, 8, 16, 16, 16, 16, 764 }; 765 uint32_t d; 766 uint32_t freq; 767 uint16_t result; 768 769 if ((speed < 178) || (speed > ((3000000 * 100) / 97))) 770 return (1); /* prevent numerical overflow */ 771 772 /* Special cases for 2M and 3M. */ 773 if ((speed >= ((3000000 * 100) / 103)) && 774 (speed <= ((3000000 * 100) / 97))) { 775 result = 0; 776 goto done; 777 } 778 if ((speed >= ((2000000 * 100) / 103)) && 779 (speed <= ((2000000 * 100) / 97))) { 780 result = 1; 781 goto done; 782 } 783 d = (FTDI_8U232AM_FREQ << 4) / speed; 784 d = (d & ~15) + roundoff[d & 15]; 785 786 if (d < FTDI_8U232AM_MIN_DIV) 787 d = FTDI_8U232AM_MIN_DIV; 788 else if (d > FTDI_8U232AM_MAX_DIV) 789 d = FTDI_8U232AM_MAX_DIV; 790 791 /* 792 * Calculate the frequency needed for "d" to exactly divide down to 793 * our target "speed", and check that the actual frequency is within 794 * 3% of this. 795 */ 796 freq = (speed * d); 797 if ((freq < ((FTDI_8U232AM_FREQ * 1600ULL) / 103)) || 798 (freq > ((FTDI_8U232AM_FREQ * 1600ULL) / 97))) 799 return (1); 800 801 /* 802 * Pack the divisor into the resultant value. The lower 14-bits 803 * hold the integral part, while the upper 2 bits encode the 804 * fractional component: either 0, 0.5, 0.25, or 0.125. 805 */ 806 result = (d >> 4); 807 if (d & 8) 808 result |= 0x4000; 809 else if (d & 4) 810 result |= 0x8000; 811 else if (d & 2) 812 result |= 0xc000; 813 814 done: 815 *rate = result; 816 return (0); 817 } 818 819 static void 820 uftdi_poll(struct ucom_softc *ucom) 821 { 822 struct uftdi_softc *sc = ucom->sc_parent; 823 usbd_transfer_poll(sc->sc_xfer, UFTDI_N_TRANSFER); 824 } 825