uftdi.c revision 199816
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 199816 2009-11-26 00:43:17Z 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_FTDI, USB_PRODUCT_FTDI_CTI_USB_NANO_485, UFTDI_TYPE_8U232AM)}, 247 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CTI_USB_MINI_485, UFTDI_TYPE_8U232AM)}, 248 {USB_VPI(USB_VENDOR_SIIG2, USB_PRODUCT_SIIG2_US2308, UFTDI_TYPE_8U232AM)}, 249 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_VALUECAN, UFTDI_TYPE_8U232AM)}, 250 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_NEOVI, UFTDI_TYPE_8U232AM)}, 251 {USB_VPI(USB_VENDOR_BBELECTRONICS, USB_PRODUCT_BBELECTRONICS_USOTL4, UFTDI_TYPE_8U232AM)}, 252 {USB_VPI(USB_VENDOR_MARVELL, USB_PRODUCT_MARVELL_SHEEVAPLUG, UFTDI_TYPE_8U232AM)}, 253 {USB_VPI(USB_VENDOR_MELCO, USB_PRODUCT_MELCO_PCOPRS1, UFTDI_TYPE_8U232AM)}, 254}; 255 256static int 257uftdi_probe(device_t dev) 258{ 259 struct usb_attach_arg *uaa = device_get_ivars(dev); 260 261 if (uaa->usb_mode != USB_MODE_HOST) { 262 return (ENXIO); 263 } 264 if (uaa->info.bConfigIndex != UFTDI_CONFIG_INDEX) { 265 return (ENXIO); 266 } 267 /* attach to all present interfaces */ 268 269 return (usbd_lookup_id_by_uaa(uftdi_devs, sizeof(uftdi_devs), uaa)); 270} 271 272static int 273uftdi_attach(device_t dev) 274{ 275 struct usb_attach_arg *uaa = device_get_ivars(dev); 276 struct uftdi_softc *sc = device_get_softc(dev); 277 int error; 278 279 sc->sc_udev = uaa->device; 280 sc->sc_dev = dev; 281 sc->sc_unit = device_get_unit(dev); 282 283 device_set_usb_desc(dev); 284 mtx_init(&sc->sc_mtx, "uftdi", NULL, MTX_DEF); 285 286 snprintf(sc->sc_name, sizeof(sc->sc_name), 287 "%s", device_get_nameunit(dev)); 288 289 DPRINTF("\n"); 290 291 sc->sc_iface_index = uaa->info.bIfaceIndex; 292 sc->sc_type = USB_GET_DRIVER_INFO(uaa); 293 294 switch (sc->sc_type) { 295 case UFTDI_TYPE_SIO: 296 sc->sc_hdrlen = 1; 297 break; 298 case UFTDI_TYPE_8U232AM: 299 default: 300 sc->sc_hdrlen = 0; 301 break; 302 } 303 304 error = usbd_transfer_setup(uaa->device, 305 &sc->sc_iface_index, sc->sc_xfer, uftdi_config, 306 UFTDI_N_TRANSFER, sc, &sc->sc_mtx); 307 308 if (error) { 309 device_printf(dev, "allocating USB " 310 "transfers failed\n"); 311 goto detach; 312 } 313 sc->sc_ucom.sc_portno = FTDI_PIT_SIOA + uaa->info.bIfaceNum; 314 315 /* clear stall at first run */ 316 mtx_lock(&sc->sc_mtx); 317 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_WR]); 318 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_RD]); 319 mtx_unlock(&sc->sc_mtx); 320 321 /* set a valid "lcr" value */ 322 323 sc->sc_last_lcr = 324 (FTDI_SIO_SET_DATA_STOP_BITS_2 | 325 FTDI_SIO_SET_DATA_PARITY_NONE | 326 FTDI_SIO_SET_DATA_BITS(8)); 327 328 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 329 &uftdi_callback, &sc->sc_mtx); 330 if (error) { 331 goto detach; 332 } 333 return (0); /* success */ 334 335detach: 336 uftdi_detach(dev); 337 return (ENXIO); 338} 339 340static int 341uftdi_detach(device_t dev) 342{ 343 struct uftdi_softc *sc = device_get_softc(dev); 344 345 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 346 usbd_transfer_unsetup(sc->sc_xfer, UFTDI_N_TRANSFER); 347 mtx_destroy(&sc->sc_mtx); 348 349 return (0); 350} 351 352static void 353uftdi_cfg_open(struct ucom_softc *ucom) 354{ 355 struct uftdi_softc *sc = ucom->sc_parent; 356 uint16_t wIndex = ucom->sc_portno; 357 struct usb_device_request req; 358 359 DPRINTF(""); 360 361 /* perform a full reset on the device */ 362 363 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 364 req.bRequest = FTDI_SIO_RESET; 365 USETW(req.wValue, FTDI_SIO_RESET_SIO); 366 USETW(req.wIndex, wIndex); 367 USETW(req.wLength, 0); 368 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 369 &req, NULL, 0, 1000); 370 371 /* turn on RTS/CTS flow control */ 372 373 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 374 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 375 USETW(req.wValue, 0); 376 USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, wIndex); 377 USETW(req.wLength, 0); 378 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 379 &req, NULL, 0, 1000); 380 381 /* 382 * NOTE: with the new UCOM layer there will always be a 383 * "uftdi_cfg_param()" call after "open()", so there is no need for 384 * "open()" to configure anything 385 */ 386} 387 388static void 389uftdi_write_callback(struct usb_xfer *xfer, usb_error_t error) 390{ 391 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 392 struct usb_page_cache *pc; 393 uint32_t actlen; 394 uint8_t buf[1]; 395 396 switch (USB_GET_STATE(xfer)) { 397 case USB_ST_SETUP: 398 case USB_ST_TRANSFERRED: 399tr_setup: 400 pc = usbd_xfer_get_frame(xfer, 0); 401 if (ucom_get_data(&sc->sc_ucom, pc, 402 sc->sc_hdrlen, UFTDI_OBUFSIZE - sc->sc_hdrlen, 403 &actlen)) { 404 405 if (sc->sc_hdrlen > 0) { 406 buf[0] = 407 FTDI_OUT_TAG(actlen, sc->sc_ucom.sc_portno); 408 usbd_copy_in(pc, 0, buf, 1); 409 } 410 usbd_xfer_set_frame_len(xfer, 0, actlen + sc->sc_hdrlen); 411 usbd_transfer_submit(xfer); 412 } 413 return; 414 415 default: /* Error */ 416 if (error != USB_ERR_CANCELLED) { 417 /* try to clear stall first */ 418 usbd_xfer_set_stall(xfer); 419 goto tr_setup; 420 } 421 return; 422 } 423} 424 425static void 426uftdi_read_callback(struct usb_xfer *xfer, usb_error_t error) 427{ 428 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 429 struct usb_page_cache *pc; 430 uint8_t buf[2]; 431 uint8_t ftdi_msr; 432 uint8_t msr; 433 uint8_t lsr; 434 int actlen; 435 436 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 437 438 switch (USB_GET_STATE(xfer)) { 439 case USB_ST_TRANSFERRED: 440 441 if (actlen < 2) { 442 goto tr_setup; 443 } 444 pc = usbd_xfer_get_frame(xfer, 0); 445 usbd_copy_out(pc, 0, buf, 2); 446 447 ftdi_msr = FTDI_GET_MSR(buf); 448 lsr = FTDI_GET_LSR(buf); 449 450 msr = 0; 451 if (ftdi_msr & FTDI_SIO_CTS_MASK) 452 msr |= SER_CTS; 453 if (ftdi_msr & FTDI_SIO_DSR_MASK) 454 msr |= SER_DSR; 455 if (ftdi_msr & FTDI_SIO_RI_MASK) 456 msr |= SER_RI; 457 if (ftdi_msr & FTDI_SIO_RLSD_MASK) 458 msr |= SER_DCD; 459 460 if ((sc->sc_msr != msr) || 461 ((sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK))) { 462 DPRINTF("status change msr=0x%02x (0x%02x) " 463 "lsr=0x%02x (0x%02x)\n", msr, sc->sc_msr, 464 lsr, sc->sc_lsr); 465 466 sc->sc_msr = msr; 467 sc->sc_lsr = lsr; 468 469 ucom_status_change(&sc->sc_ucom); 470 } 471 actlen -= 2; 472 473 if (actlen > 0) { 474 ucom_put_data(&sc->sc_ucom, pc, 2, actlen); 475 } 476 case USB_ST_SETUP: 477tr_setup: 478 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 479 usbd_transfer_submit(xfer); 480 return; 481 482 default: /* Error */ 483 if (error != USB_ERR_CANCELLED) { 484 /* try to clear stall first */ 485 usbd_xfer_set_stall(xfer); 486 goto tr_setup; 487 } 488 return; 489 } 490} 491 492static void 493uftdi_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 494{ 495 struct uftdi_softc *sc = ucom->sc_parent; 496 uint16_t wIndex = ucom->sc_portno; 497 uint16_t wValue; 498 struct usb_device_request req; 499 500 wValue = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW; 501 502 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 503 req.bRequest = FTDI_SIO_MODEM_CTRL; 504 USETW(req.wValue, wValue); 505 USETW(req.wIndex, wIndex); 506 USETW(req.wLength, 0); 507 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 508 &req, NULL, 0, 1000); 509} 510 511static void 512uftdi_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 513{ 514 struct uftdi_softc *sc = ucom->sc_parent; 515 uint16_t wIndex = ucom->sc_portno; 516 uint16_t wValue; 517 struct usb_device_request req; 518 519 wValue = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW; 520 521 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 522 req.bRequest = FTDI_SIO_MODEM_CTRL; 523 USETW(req.wValue, wValue); 524 USETW(req.wIndex, wIndex); 525 USETW(req.wLength, 0); 526 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 527 &req, NULL, 0, 1000); 528} 529 530static void 531uftdi_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 532{ 533 struct uftdi_softc *sc = ucom->sc_parent; 534 uint16_t wIndex = ucom->sc_portno; 535 uint16_t wValue; 536 struct usb_device_request req; 537 538 if (onoff) { 539 sc->sc_last_lcr |= FTDI_SIO_SET_BREAK; 540 } else { 541 sc->sc_last_lcr &= ~FTDI_SIO_SET_BREAK; 542 } 543 544 wValue = sc->sc_last_lcr; 545 546 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 547 req.bRequest = FTDI_SIO_SET_DATA; 548 USETW(req.wValue, wValue); 549 USETW(req.wIndex, wIndex); 550 USETW(req.wLength, 0); 551 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 552 &req, NULL, 0, 1000); 553} 554 555static int 556uftdi_set_parm_soft(struct termios *t, 557 struct uftdi_param_config *cfg, uint8_t type) 558{ 559 bzero(cfg, sizeof(*cfg)); 560 561 switch (type) { 562 case UFTDI_TYPE_SIO: 563 switch (t->c_ospeed) { 564 case 300: 565 cfg->rate = ftdi_sio_b300; 566 break; 567 case 600: 568 cfg->rate = ftdi_sio_b600; 569 break; 570 case 1200: 571 cfg->rate = ftdi_sio_b1200; 572 break; 573 case 2400: 574 cfg->rate = ftdi_sio_b2400; 575 break; 576 case 4800: 577 cfg->rate = ftdi_sio_b4800; 578 break; 579 case 9600: 580 cfg->rate = ftdi_sio_b9600; 581 break; 582 case 19200: 583 cfg->rate = ftdi_sio_b19200; 584 break; 585 case 38400: 586 cfg->rate = ftdi_sio_b38400; 587 break; 588 case 57600: 589 cfg->rate = ftdi_sio_b57600; 590 break; 591 case 115200: 592 cfg->rate = ftdi_sio_b115200; 593 break; 594 default: 595 return (EINVAL); 596 } 597 break; 598 599 case UFTDI_TYPE_8U232AM: 600 if (uftdi_8u232am_getrate(t->c_ospeed, &cfg->rate)) { 601 return (EINVAL); 602 } 603 break; 604 } 605 606 if (t->c_cflag & CSTOPB) 607 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_2; 608 else 609 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_1; 610 611 if (t->c_cflag & PARENB) { 612 if (t->c_cflag & PARODD) { 613 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_ODD; 614 } else { 615 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_EVEN; 616 } 617 } else { 618 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_NONE; 619 } 620 621 switch (t->c_cflag & CSIZE) { 622 case CS5: 623 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(5); 624 break; 625 626 case CS6: 627 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(6); 628 break; 629 630 case CS7: 631 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(7); 632 break; 633 634 case CS8: 635 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(8); 636 break; 637 } 638 639 if (t->c_cflag & CRTSCTS) { 640 cfg->v_flow = FTDI_SIO_RTS_CTS_HS; 641 } else if (t->c_iflag & (IXON | IXOFF)) { 642 cfg->v_flow = FTDI_SIO_XON_XOFF_HS; 643 cfg->v_start = t->c_cc[VSTART]; 644 cfg->v_stop = t->c_cc[VSTOP]; 645 } else { 646 cfg->v_flow = FTDI_SIO_DISABLE_FLOW_CTRL; 647 } 648 649 return (0); 650} 651 652static int 653uftdi_pre_param(struct ucom_softc *ucom, struct termios *t) 654{ 655 struct uftdi_softc *sc = ucom->sc_parent; 656 struct uftdi_param_config cfg; 657 658 DPRINTF("\n"); 659 660 return (uftdi_set_parm_soft(t, &cfg, sc->sc_type)); 661} 662 663static void 664uftdi_cfg_param(struct ucom_softc *ucom, struct termios *t) 665{ 666 struct uftdi_softc *sc = ucom->sc_parent; 667 uint16_t wIndex = ucom->sc_portno; 668 struct uftdi_param_config cfg; 669 struct usb_device_request req; 670 671 if (uftdi_set_parm_soft(t, &cfg, sc->sc_type)) { 672 /* should not happen */ 673 return; 674 } 675 sc->sc_last_lcr = cfg.lcr; 676 677 DPRINTF("\n"); 678 679 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 680 req.bRequest = FTDI_SIO_SET_BAUD_RATE; 681 USETW(req.wValue, cfg.rate); 682 USETW(req.wIndex, wIndex); 683 USETW(req.wLength, 0); 684 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 685 &req, NULL, 0, 1000); 686 687 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 688 req.bRequest = FTDI_SIO_SET_DATA; 689 USETW(req.wValue, cfg.lcr); 690 USETW(req.wIndex, wIndex); 691 USETW(req.wLength, 0); 692 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 693 &req, NULL, 0, 1000); 694 695 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 696 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 697 USETW2(req.wValue, cfg.v_stop, cfg.v_start); 698 USETW2(req.wIndex, cfg.v_flow, wIndex); 699 USETW(req.wLength, 0); 700 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 701 &req, NULL, 0, 1000); 702} 703 704static void 705uftdi_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 706{ 707 struct uftdi_softc *sc = ucom->sc_parent; 708 709 DPRINTF("msr=0x%02x lsr=0x%02x\n", 710 sc->sc_msr, sc->sc_lsr); 711 712 *msr = sc->sc_msr; 713 *lsr = sc->sc_lsr; 714} 715 716static void 717uftdi_start_read(struct ucom_softc *ucom) 718{ 719 struct uftdi_softc *sc = ucom->sc_parent; 720 721 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_RD]); 722} 723 724static void 725uftdi_stop_read(struct ucom_softc *ucom) 726{ 727 struct uftdi_softc *sc = ucom->sc_parent; 728 729 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_RD]); 730} 731 732static void 733uftdi_start_write(struct ucom_softc *ucom) 734{ 735 struct uftdi_softc *sc = ucom->sc_parent; 736 737 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_WR]); 738} 739 740static void 741uftdi_stop_write(struct ucom_softc *ucom) 742{ 743 struct uftdi_softc *sc = ucom->sc_parent; 744 745 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_WR]); 746} 747 748/*------------------------------------------------------------------------* 749 * uftdi_8u232am_getrate 750 * 751 * Return values: 752 * 0: Success 753 * Else: Failure 754 *------------------------------------------------------------------------*/ 755static uint8_t 756uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate) 757{ 758 /* Table of the nearest even powers-of-2 for values 0..15. */ 759 static const uint8_t roundoff[16] = { 760 0, 2, 2, 4, 4, 4, 8, 8, 761 8, 8, 8, 8, 16, 16, 16, 16, 762 }; 763 uint32_t d; 764 uint32_t freq; 765 uint16_t result; 766 767 if ((speed < 178) || (speed > ((3000000 * 100) / 97))) 768 return (1); /* prevent numerical overflow */ 769 770 /* Special cases for 2M and 3M. */ 771 if ((speed >= ((3000000 * 100) / 103)) && 772 (speed <= ((3000000 * 100) / 97))) { 773 result = 0; 774 goto done; 775 } 776 if ((speed >= ((2000000 * 100) / 103)) && 777 (speed <= ((2000000 * 100) / 97))) { 778 result = 1; 779 goto done; 780 } 781 d = (FTDI_8U232AM_FREQ << 4) / speed; 782 d = (d & ~15) + roundoff[d & 15]; 783 784 if (d < FTDI_8U232AM_MIN_DIV) 785 d = FTDI_8U232AM_MIN_DIV; 786 else if (d > FTDI_8U232AM_MAX_DIV) 787 d = FTDI_8U232AM_MAX_DIV; 788 789 /* 790 * Calculate the frequency needed for "d" to exactly divide down to 791 * our target "speed", and check that the actual frequency is within 792 * 3% of this. 793 */ 794 freq = (speed * d); 795 if ((freq < ((FTDI_8U232AM_FREQ * 1600ULL) / 103)) || 796 (freq > ((FTDI_8U232AM_FREQ * 1600ULL) / 97))) 797 return (1); 798 799 /* 800 * Pack the divisor into the resultant value. The lower 14-bits 801 * hold the integral part, while the upper 2 bits encode the 802 * fractional component: either 0, 0.5, 0.25, or 0.125. 803 */ 804 result = (d >> 4); 805 if (d & 8) 806 result |= 0x4000; 807 else if (d & 4) 808 result |= 0x8000; 809 else if (d & 2) 810 result |= 0xc000; 811 812done: 813 *rate = result; 814 return (0); 815} 816 817static void 818uftdi_poll(struct ucom_softc *ucom) 819{ 820 struct uftdi_softc *sc = ucom->sc_parent; 821 usbd_transfer_poll(sc->sc_xfer, UFTDI_N_TRANSFER); 822} 823