uftdi.c revision 197570
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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include <sys/cdefs.h> 40__FBSDID("$FreeBSD: head/sys/dev/usb/serial/uftdi.c 197570 2009-09-28 08:13:50Z thompsa $"); 41 42/* 43 * NOTE: all function names beginning like "uftdi_cfg_" can only 44 * be called from within the config thread function ! 45 */ 46 47/* 48 * FTDI FT8U100AX serial adapter driver 49 */ 50 51#include <sys/stdint.h> 52#include <sys/stddef.h> 53#include <sys/param.h> 54#include <sys/queue.h> 55#include <sys/types.h> 56#include <sys/systm.h> 57#include <sys/kernel.h> 58#include <sys/bus.h> 59#include <sys/linker_set.h> 60#include <sys/module.h> 61#include <sys/lock.h> 62#include <sys/mutex.h> 63#include <sys/condvar.h> 64#include <sys/sysctl.h> 65#include <sys/sx.h> 66#include <sys/unistd.h> 67#include <sys/callout.h> 68#include <sys/malloc.h> 69#include <sys/priv.h> 70 71#include <dev/usb/usb.h> 72#include <dev/usb/usbdi.h> 73#include <dev/usb/usbdi_util.h> 74#include "usbdevs.h" 75 76#define USB_DEBUG_VAR uftdi_debug 77#include <dev/usb/usb_debug.h> 78#include <dev/usb/usb_process.h> 79 80#include <dev/usb/serial/usb_serial.h> 81#include <dev/usb/serial/uftdi_reg.h> 82 83#if USB_DEBUG 84static int uftdi_debug = 0; 85 86SYSCTL_NODE(_hw_usb, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi"); 87SYSCTL_INT(_hw_usb_uftdi, OID_AUTO, debug, CTLFLAG_RW, 88 &uftdi_debug, 0, "Debug level"); 89#endif 90 91#define UFTDI_CONFIG_INDEX 0 92#define UFTDI_IFACE_INDEX 0 93 94#define UFTDI_IBUFSIZE 64 /* bytes, maximum number of bytes per 95 * frame */ 96#define UFTDI_OBUFSIZE 64 /* bytes, cannot be increased due to 97 * do size encoding */ 98 99enum { 100 UFTDI_BULK_DT_WR, 101 UFTDI_BULK_DT_RD, 102 UFTDI_N_TRANSFER, 103}; 104 105struct uftdi_softc { 106 struct ucom_super_softc sc_super_ucom; 107 struct ucom_softc sc_ucom; 108 109 struct usb_device *sc_udev; 110 struct usb_xfer *sc_xfer[UFTDI_N_TRANSFER]; 111 device_t sc_dev; 112 struct mtx sc_mtx; 113 114 uint32_t sc_unit; 115 enum uftdi_type sc_type; 116 117 uint16_t sc_last_lcr; 118 119 uint8_t sc_iface_index; 120 uint8_t sc_hdrlen; 121 uint8_t sc_msr; 122 uint8_t sc_lsr; 123 124 uint8_t sc_name[16]; 125}; 126 127struct uftdi_param_config { 128 uint16_t rate; 129 uint16_t lcr; 130 uint8_t v_start; 131 uint8_t v_stop; 132 uint8_t v_flow; 133}; 134 135/* prototypes */ 136 137static device_probe_t uftdi_probe; 138static device_attach_t uftdi_attach; 139static device_detach_t uftdi_detach; 140 141static usb_callback_t uftdi_write_callback; 142static usb_callback_t uftdi_read_callback; 143 144static void uftdi_cfg_open(struct ucom_softc *); 145static void uftdi_cfg_set_dtr(struct ucom_softc *, uint8_t); 146static void uftdi_cfg_set_rts(struct ucom_softc *, uint8_t); 147static void uftdi_cfg_set_break(struct ucom_softc *, uint8_t); 148static int uftdi_set_parm_soft(struct termios *, 149 struct uftdi_param_config *, uint8_t); 150static int uftdi_pre_param(struct ucom_softc *, struct termios *); 151static void uftdi_cfg_param(struct ucom_softc *, struct termios *); 152static void uftdi_cfg_get_status(struct ucom_softc *, uint8_t *, 153 uint8_t *); 154static void uftdi_start_read(struct ucom_softc *); 155static void uftdi_stop_read(struct ucom_softc *); 156static void uftdi_start_write(struct ucom_softc *); 157static void uftdi_stop_write(struct ucom_softc *); 158static uint8_t uftdi_8u232am_getrate(uint32_t, uint16_t *); 159static void uftdi_poll(struct ucom_softc *ucom); 160 161static const struct usb_config uftdi_config[UFTDI_N_TRANSFER] = { 162 163 [UFTDI_BULK_DT_WR] = { 164 .type = UE_BULK, 165 .endpoint = UE_ADDR_ANY, 166 .direction = UE_DIR_OUT, 167 .bufsize = UFTDI_OBUFSIZE, 168 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 169 .callback = &uftdi_write_callback, 170 }, 171 172 [UFTDI_BULK_DT_RD] = { 173 .type = UE_BULK, 174 .endpoint = UE_ADDR_ANY, 175 .direction = UE_DIR_IN, 176 .bufsize = UFTDI_IBUFSIZE, 177 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 178 .callback = &uftdi_read_callback, 179 }, 180}; 181 182static const struct ucom_callback uftdi_callback = { 183 .ucom_cfg_get_status = &uftdi_cfg_get_status, 184 .ucom_cfg_set_dtr = &uftdi_cfg_set_dtr, 185 .ucom_cfg_set_rts = &uftdi_cfg_set_rts, 186 .ucom_cfg_set_break = &uftdi_cfg_set_break, 187 .ucom_cfg_param = &uftdi_cfg_param, 188 .ucom_cfg_open = &uftdi_cfg_open, 189 .ucom_pre_param = &uftdi_pre_param, 190 .ucom_start_read = &uftdi_start_read, 191 .ucom_stop_read = &uftdi_stop_read, 192 .ucom_start_write = &uftdi_start_write, 193 .ucom_stop_write = &uftdi_stop_write, 194 .ucom_poll = &uftdi_poll, 195}; 196 197static device_method_t uftdi_methods[] = { 198 /* Device interface */ 199 DEVMETHOD(device_probe, uftdi_probe), 200 DEVMETHOD(device_attach, uftdi_attach), 201 DEVMETHOD(device_detach, uftdi_detach), 202 203 {0, 0} 204}; 205 206static devclass_t uftdi_devclass; 207 208static driver_t uftdi_driver = { 209 .name = "uftdi", 210 .methods = uftdi_methods, 211 .size = sizeof(struct uftdi_softc), 212}; 213 214DRIVER_MODULE(uftdi, uhub, uftdi_driver, uftdi_devclass, NULL, 0); 215MODULE_DEPEND(uftdi, ucom, 1, 1, 1); 216MODULE_DEPEND(uftdi, usb, 1, 1, 1); 217 218static struct usb_device_id uftdi_devs[] = { 219 {USB_VPI(USB_VENDOR_ATMEL, USB_PRODUCT_ATMEL_STK541, UFTDI_TYPE_8U232AM)}, 220 {USB_VPI(USB_VENDOR_DRESDENELEKTRONIK, USB_PRODUCT_DRESDENELEKTRONIK_SENSORTERMINALBOARD, UFTDI_TYPE_8U232AM)}, 221 {USB_VPI(USB_VENDOR_DRESDENELEKTRONIK, USB_PRODUCT_DRESDENELEKTRONIK_WIRELESSHANDHELDTERMINAL, UFTDI_TYPE_8U232AM)}, 222 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U100AX, UFTDI_TYPE_SIO)}, 223 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_2232C, UFTDI_TYPE_8U232AM)}, 224 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U232AM, UFTDI_TYPE_8U232AM)}, 225 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U232AM4, UFTDI_TYPE_8U232AM)}, 226 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SEMC_DSS20, UFTDI_TYPE_8U232AM)}, 227 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_631, UFTDI_TYPE_8U232AM)}, 228 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_632, UFTDI_TYPE_8U232AM)}, 229 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_633, UFTDI_TYPE_8U232AM)}, 230 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_634, UFTDI_TYPE_8U232AM)}, 231 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_635, UFTDI_TYPE_8U232AM)}, 232 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_USBSERIAL, UFTDI_TYPE_8U232AM)}, 233 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MX2_3, UFTDI_TYPE_8U232AM)}, 234 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MX4_5, UFTDI_TYPE_8U232AM)}, 235 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LK202, UFTDI_TYPE_8U232AM)}, 236 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LK204, UFTDI_TYPE_8U232AM)}, 237 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M, UFTDI_TYPE_8U232AM)}, 238 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S, UFTDI_TYPE_8U232AM)}, 239 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U, UFTDI_TYPE_8U232AM)}, 240 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EISCOU, UFTDI_TYPE_8U232AM)}, 241 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_UOPTBR, UFTDI_TYPE_8U232AM)}, 242 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EMCU2D, UFTDI_TYPE_8U232AM)}, 243 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_PCMSFU, UFTDI_TYPE_8U232AM)}, 244 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EMCU2H, UFTDI_TYPE_8U232AM)}, 245 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MAXSTREAM, UFTDI_TYPE_8U232AM)}, 246 {USB_VPI(USB_VENDOR_SIIG2, USB_PRODUCT_SIIG2_US2308, UFTDI_TYPE_8U232AM)}, 247 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_VALUECAN, UFTDI_TYPE_8U232AM)}, 248 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_NEOVI, UFTDI_TYPE_8U232AM)}, 249 {USB_VPI(USB_VENDOR_BBELECTRONICS, USB_PRODUCT_BBELECTRONICS_USOTL4, UFTDI_TYPE_8U232AM)}, 250 {USB_VPI(USB_VENDOR_MELCO, USB_PRODUCT_MELCO_PCOPRS1, UFTDI_TYPE_8U232AM)}, 251}; 252 253static int 254uftdi_probe(device_t dev) 255{ 256 struct usb_attach_arg *uaa = device_get_ivars(dev); 257 258 if (uaa->usb_mode != USB_MODE_HOST) { 259 return (ENXIO); 260 } 261 if (uaa->info.bConfigIndex != UFTDI_CONFIG_INDEX) { 262 return (ENXIO); 263 } 264 /* attach to all present interfaces */ 265 266 return (usbd_lookup_id_by_uaa(uftdi_devs, sizeof(uftdi_devs), uaa)); 267} 268 269static int 270uftdi_attach(device_t dev) 271{ 272 struct usb_attach_arg *uaa = device_get_ivars(dev); 273 struct uftdi_softc *sc = device_get_softc(dev); 274 int error; 275 276 sc->sc_udev = uaa->device; 277 sc->sc_dev = dev; 278 sc->sc_unit = device_get_unit(dev); 279 280 device_set_usb_desc(dev); 281 mtx_init(&sc->sc_mtx, "uftdi", NULL, MTX_DEF); 282 283 snprintf(sc->sc_name, sizeof(sc->sc_name), 284 "%s", device_get_nameunit(dev)); 285 286 DPRINTF("\n"); 287 288 sc->sc_iface_index = uaa->info.bIfaceIndex; 289 sc->sc_type = USB_GET_DRIVER_INFO(uaa); 290 291 switch (sc->sc_type) { 292 case UFTDI_TYPE_SIO: 293 sc->sc_hdrlen = 1; 294 break; 295 case UFTDI_TYPE_8U232AM: 296 default: 297 sc->sc_hdrlen = 0; 298 break; 299 } 300 301 error = usbd_transfer_setup(uaa->device, 302 &sc->sc_iface_index, sc->sc_xfer, uftdi_config, 303 UFTDI_N_TRANSFER, sc, &sc->sc_mtx); 304 305 if (error) { 306 device_printf(dev, "allocating USB " 307 "transfers failed!\n"); 308 goto detach; 309 } 310 sc->sc_ucom.sc_portno = FTDI_PIT_SIOA + uaa->info.bIfaceNum; 311 312 /* clear stall at first run */ 313 mtx_lock(&sc->sc_mtx); 314 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_WR]); 315 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_RD]); 316 mtx_unlock(&sc->sc_mtx); 317 318 /* set a valid "lcr" value */ 319 320 sc->sc_last_lcr = 321 (FTDI_SIO_SET_DATA_STOP_BITS_2 | 322 FTDI_SIO_SET_DATA_PARITY_NONE | 323 FTDI_SIO_SET_DATA_BITS(8)); 324 325 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 326 &uftdi_callback, &sc->sc_mtx); 327 if (error) { 328 goto detach; 329 } 330 return (0); /* success */ 331 332detach: 333 uftdi_detach(dev); 334 return (ENXIO); 335} 336 337static int 338uftdi_detach(device_t dev) 339{ 340 struct uftdi_softc *sc = device_get_softc(dev); 341 342 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 343 usbd_transfer_unsetup(sc->sc_xfer, UFTDI_N_TRANSFER); 344 mtx_destroy(&sc->sc_mtx); 345 346 return (0); 347} 348 349static void 350uftdi_cfg_open(struct ucom_softc *ucom) 351{ 352 struct uftdi_softc *sc = ucom->sc_parent; 353 uint16_t wIndex = ucom->sc_portno; 354 struct usb_device_request req; 355 356 DPRINTF(""); 357 358 /* perform a full reset on the device */ 359 360 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 361 req.bRequest = FTDI_SIO_RESET; 362 USETW(req.wValue, FTDI_SIO_RESET_SIO); 363 USETW(req.wIndex, wIndex); 364 USETW(req.wLength, 0); 365 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 366 &req, NULL, 0, 1000); 367 368 /* turn on RTS/CTS flow control */ 369 370 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 371 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 372 USETW(req.wValue, 0); 373 USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, wIndex); 374 USETW(req.wLength, 0); 375 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 376 &req, NULL, 0, 1000); 377 378 /* 379 * NOTE: with the new UCOM layer there will always be a 380 * "uftdi_cfg_param()" call after "open()", so there is no need for 381 * "open()" to configure anything 382 */ 383} 384 385static void 386uftdi_write_callback(struct usb_xfer *xfer, usb_error_t error) 387{ 388 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 389 struct usb_page_cache *pc; 390 uint32_t actlen; 391 uint8_t buf[1]; 392 393 switch (USB_GET_STATE(xfer)) { 394 case USB_ST_SETUP: 395 case USB_ST_TRANSFERRED: 396tr_setup: 397 pc = usbd_xfer_get_frame(xfer, 0); 398 if (ucom_get_data(&sc->sc_ucom, pc, 399 sc->sc_hdrlen, UFTDI_OBUFSIZE - sc->sc_hdrlen, 400 &actlen)) { 401 402 if (sc->sc_hdrlen > 0) { 403 buf[0] = 404 FTDI_OUT_TAG(actlen, sc->sc_ucom.sc_portno); 405 usbd_copy_in(pc, 0, buf, 1); 406 } 407 usbd_xfer_set_frame_len(xfer, 0, actlen + sc->sc_hdrlen); 408 usbd_transfer_submit(xfer); 409 } 410 return; 411 412 default: /* Error */ 413 if (error != USB_ERR_CANCELLED) { 414 /* try to clear stall first */ 415 usbd_xfer_set_stall(xfer); 416 goto tr_setup; 417 } 418 return; 419 } 420} 421 422static void 423uftdi_read_callback(struct usb_xfer *xfer, usb_error_t error) 424{ 425 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 426 struct usb_page_cache *pc; 427 uint8_t buf[2]; 428 uint8_t ftdi_msr; 429 uint8_t msr; 430 uint8_t lsr; 431 int actlen; 432 433 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 434 435 switch (USB_GET_STATE(xfer)) { 436 case USB_ST_TRANSFERRED: 437 438 if (actlen < 2) { 439 goto tr_setup; 440 } 441 pc = usbd_xfer_get_frame(xfer, 0); 442 usbd_copy_out(pc, 0, buf, 2); 443 444 ftdi_msr = FTDI_GET_MSR(buf); 445 lsr = FTDI_GET_LSR(buf); 446 447 msr = 0; 448 if (ftdi_msr & FTDI_SIO_CTS_MASK) 449 msr |= SER_CTS; 450 if (ftdi_msr & FTDI_SIO_DSR_MASK) 451 msr |= SER_DSR; 452 if (ftdi_msr & FTDI_SIO_RI_MASK) 453 msr |= SER_RI; 454 if (ftdi_msr & FTDI_SIO_RLSD_MASK) 455 msr |= SER_DCD; 456 457 if ((sc->sc_msr != msr) || 458 ((sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK))) { 459 DPRINTF("status change msr=0x%02x (0x%02x) " 460 "lsr=0x%02x (0x%02x)\n", msr, sc->sc_msr, 461 lsr, sc->sc_lsr); 462 463 sc->sc_msr = msr; 464 sc->sc_lsr = lsr; 465 466 ucom_status_change(&sc->sc_ucom); 467 } 468 actlen -= 2; 469 470 if (actlen > 0) { 471 ucom_put_data(&sc->sc_ucom, pc, 2, actlen); 472 } 473 case USB_ST_SETUP: 474tr_setup: 475 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 476 usbd_transfer_submit(xfer); 477 return; 478 479 default: /* Error */ 480 if (error != USB_ERR_CANCELLED) { 481 /* try to clear stall first */ 482 usbd_xfer_set_stall(xfer); 483 goto tr_setup; 484 } 485 return; 486 } 487} 488 489static void 490uftdi_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 491{ 492 struct uftdi_softc *sc = ucom->sc_parent; 493 uint16_t wIndex = ucom->sc_portno; 494 uint16_t wValue; 495 struct usb_device_request req; 496 497 wValue = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW; 498 499 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 500 req.bRequest = FTDI_SIO_MODEM_CTRL; 501 USETW(req.wValue, wValue); 502 USETW(req.wIndex, wIndex); 503 USETW(req.wLength, 0); 504 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 505 &req, NULL, 0, 1000); 506} 507 508static void 509uftdi_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 510{ 511 struct uftdi_softc *sc = ucom->sc_parent; 512 uint16_t wIndex = ucom->sc_portno; 513 uint16_t wValue; 514 struct usb_device_request req; 515 516 wValue = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW; 517 518 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 519 req.bRequest = FTDI_SIO_MODEM_CTRL; 520 USETW(req.wValue, wValue); 521 USETW(req.wIndex, wIndex); 522 USETW(req.wLength, 0); 523 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 524 &req, NULL, 0, 1000); 525} 526 527static void 528uftdi_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 529{ 530 struct uftdi_softc *sc = ucom->sc_parent; 531 uint16_t wIndex = ucom->sc_portno; 532 uint16_t wValue; 533 struct usb_device_request req; 534 535 if (onoff) { 536 sc->sc_last_lcr |= FTDI_SIO_SET_BREAK; 537 } else { 538 sc->sc_last_lcr &= ~FTDI_SIO_SET_BREAK; 539 } 540 541 wValue = sc->sc_last_lcr; 542 543 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 544 req.bRequest = FTDI_SIO_SET_DATA; 545 USETW(req.wValue, wValue); 546 USETW(req.wIndex, wIndex); 547 USETW(req.wLength, 0); 548 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 549 &req, NULL, 0, 1000); 550} 551 552static int 553uftdi_set_parm_soft(struct termios *t, 554 struct uftdi_param_config *cfg, uint8_t type) 555{ 556 bzero(cfg, sizeof(*cfg)); 557 558 switch (type) { 559 case UFTDI_TYPE_SIO: 560 switch (t->c_ospeed) { 561 case 300: 562 cfg->rate = ftdi_sio_b300; 563 break; 564 case 600: 565 cfg->rate = ftdi_sio_b600; 566 break; 567 case 1200: 568 cfg->rate = ftdi_sio_b1200; 569 break; 570 case 2400: 571 cfg->rate = ftdi_sio_b2400; 572 break; 573 case 4800: 574 cfg->rate = ftdi_sio_b4800; 575 break; 576 case 9600: 577 cfg->rate = ftdi_sio_b9600; 578 break; 579 case 19200: 580 cfg->rate = ftdi_sio_b19200; 581 break; 582 case 38400: 583 cfg->rate = ftdi_sio_b38400; 584 break; 585 case 57600: 586 cfg->rate = ftdi_sio_b57600; 587 break; 588 case 115200: 589 cfg->rate = ftdi_sio_b115200; 590 break; 591 default: 592 return (EINVAL); 593 } 594 break; 595 596 case UFTDI_TYPE_8U232AM: 597 if (uftdi_8u232am_getrate(t->c_ospeed, &cfg->rate)) { 598 return (EINVAL); 599 } 600 break; 601 } 602 603 if (t->c_cflag & CSTOPB) 604 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_2; 605 else 606 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_1; 607 608 if (t->c_cflag & PARENB) { 609 if (t->c_cflag & PARODD) { 610 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_ODD; 611 } else { 612 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_EVEN; 613 } 614 } else { 615 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_NONE; 616 } 617 618 switch (t->c_cflag & CSIZE) { 619 case CS5: 620 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(5); 621 break; 622 623 case CS6: 624 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(6); 625 break; 626 627 case CS7: 628 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(7); 629 break; 630 631 case CS8: 632 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(8); 633 break; 634 } 635 636 if (t->c_cflag & CRTSCTS) { 637 cfg->v_flow = FTDI_SIO_RTS_CTS_HS; 638 } else if (t->c_iflag & (IXON | IXOFF)) { 639 cfg->v_flow = FTDI_SIO_XON_XOFF_HS; 640 cfg->v_start = t->c_cc[VSTART]; 641 cfg->v_stop = t->c_cc[VSTOP]; 642 } else { 643 cfg->v_flow = FTDI_SIO_DISABLE_FLOW_CTRL; 644 } 645 646 return (0); 647} 648 649static int 650uftdi_pre_param(struct ucom_softc *ucom, struct termios *t) 651{ 652 struct uftdi_softc *sc = ucom->sc_parent; 653 struct uftdi_param_config cfg; 654 655 DPRINTF("\n"); 656 657 return (uftdi_set_parm_soft(t, &cfg, sc->sc_type)); 658} 659 660static void 661uftdi_cfg_param(struct ucom_softc *ucom, struct termios *t) 662{ 663 struct uftdi_softc *sc = ucom->sc_parent; 664 uint16_t wIndex = ucom->sc_portno; 665 struct uftdi_param_config cfg; 666 struct usb_device_request req; 667 668 if (uftdi_set_parm_soft(t, &cfg, sc->sc_type)) { 669 /* should not happen */ 670 return; 671 } 672 sc->sc_last_lcr = cfg.lcr; 673 674 DPRINTF("\n"); 675 676 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 677 req.bRequest = FTDI_SIO_SET_BAUD_RATE; 678 USETW(req.wValue, cfg.rate); 679 USETW(req.wIndex, wIndex); 680 USETW(req.wLength, 0); 681 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 682 &req, NULL, 0, 1000); 683 684 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 685 req.bRequest = FTDI_SIO_SET_DATA; 686 USETW(req.wValue, cfg.lcr); 687 USETW(req.wIndex, wIndex); 688 USETW(req.wLength, 0); 689 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 690 &req, NULL, 0, 1000); 691 692 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 693 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 694 USETW2(req.wValue, cfg.v_stop, cfg.v_start); 695 USETW2(req.wIndex, cfg.v_flow, wIndex); 696 USETW(req.wLength, 0); 697 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 698 &req, NULL, 0, 1000); 699} 700 701static void 702uftdi_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 703{ 704 struct uftdi_softc *sc = ucom->sc_parent; 705 706 DPRINTF("msr=0x%02x lsr=0x%02x\n", 707 sc->sc_msr, sc->sc_lsr); 708 709 *msr = sc->sc_msr; 710 *lsr = sc->sc_lsr; 711} 712 713static void 714uftdi_start_read(struct ucom_softc *ucom) 715{ 716 struct uftdi_softc *sc = ucom->sc_parent; 717 718 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_RD]); 719} 720 721static void 722uftdi_stop_read(struct ucom_softc *ucom) 723{ 724 struct uftdi_softc *sc = ucom->sc_parent; 725 726 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_RD]); 727} 728 729static void 730uftdi_start_write(struct ucom_softc *ucom) 731{ 732 struct uftdi_softc *sc = ucom->sc_parent; 733 734 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_WR]); 735} 736 737static void 738uftdi_stop_write(struct ucom_softc *ucom) 739{ 740 struct uftdi_softc *sc = ucom->sc_parent; 741 742 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_WR]); 743} 744 745/*------------------------------------------------------------------------* 746 * uftdi_8u232am_getrate 747 * 748 * Return values: 749 * 0: Success 750 * Else: Failure 751 *------------------------------------------------------------------------*/ 752static uint8_t 753uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate) 754{ 755 /* Table of the nearest even powers-of-2 for values 0..15. */ 756 static const uint8_t roundoff[16] = { 757 0, 2, 2, 4, 4, 4, 8, 8, 758 8, 8, 8, 8, 16, 16, 16, 16, 759 }; 760 uint32_t d; 761 uint32_t freq; 762 uint16_t result; 763 764 if ((speed < 178) || (speed > ((3000000 * 100) / 97))) 765 return (1); /* prevent numerical overflow */ 766 767 /* Special cases for 2M and 3M. */ 768 if ((speed >= ((3000000 * 100) / 103)) && 769 (speed <= ((3000000 * 100) / 97))) { 770 result = 0; 771 goto done; 772 } 773 if ((speed >= ((2000000 * 100) / 103)) && 774 (speed <= ((2000000 * 100) / 97))) { 775 result = 1; 776 goto done; 777 } 778 d = (FTDI_8U232AM_FREQ << 4) / speed; 779 d = (d & ~15) + roundoff[d & 15]; 780 781 if (d < FTDI_8U232AM_MIN_DIV) 782 d = FTDI_8U232AM_MIN_DIV; 783 else if (d > FTDI_8U232AM_MAX_DIV) 784 d = FTDI_8U232AM_MAX_DIV; 785 786 /* 787 * Calculate the frequency needed for "d" to exactly divide down to 788 * our target "speed", and check that the actual frequency is within 789 * 3% of this. 790 */ 791 freq = (speed * d); 792 if ((freq < ((FTDI_8U232AM_FREQ * 1600ULL) / 103)) || 793 (freq > ((FTDI_8U232AM_FREQ * 1600ULL) / 97))) 794 return (1); 795 796 /* 797 * Pack the divisor into the resultant value. The lower 14-bits 798 * hold the integral part, while the upper 2 bits encode the 799 * fractional component: either 0, 0.5, 0.25, or 0.125. 800 */ 801 result = (d >> 4); 802 if (d & 8) 803 result |= 0x4000; 804 else if (d & 4) 805 result |= 0x8000; 806 else if (d & 2) 807 result |= 0xc000; 808 809done: 810 *rate = result; 811 return (0); 812} 813 814static void 815uftdi_poll(struct ucom_softc *ucom) 816{ 817 struct uftdi_softc *sc = ucom->sc_parent; 818 usbd_transfer_poll(sc->sc_xfer, UFTDI_N_TRANSFER); 819} 820