uftdi.c revision 200826
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 200826 2009-12-22 02:13:23Z 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,}, 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_2232D, UFTDI_TYPE_8U232AM)}, 225 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U232AM, UFTDI_TYPE_8U232AM)}, 226 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U232AM4, UFTDI_TYPE_8U232AM)}, 227 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SEMC_DSS20, UFTDI_TYPE_8U232AM)}, 228 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_631, UFTDI_TYPE_8U232AM)}, 229 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_632, UFTDI_TYPE_8U232AM)}, 230 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_633, UFTDI_TYPE_8U232AM)}, 231 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_634, UFTDI_TYPE_8U232AM)}, 232 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_635, UFTDI_TYPE_8U232AM)}, 233 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_USBSERIAL, UFTDI_TYPE_8U232AM)}, 234 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MX2_3, UFTDI_TYPE_8U232AM)}, 235 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MX4_5, UFTDI_TYPE_8U232AM)}, 236 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LK202, UFTDI_TYPE_8U232AM)}, 237 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LK204, UFTDI_TYPE_8U232AM)}, 238 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M, UFTDI_TYPE_8U232AM)}, 239 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S, UFTDI_TYPE_8U232AM)}, 240 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U, UFTDI_TYPE_8U232AM)}, 241 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EISCOU, UFTDI_TYPE_8U232AM)}, 242 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_UOPTBR, UFTDI_TYPE_8U232AM)}, 243 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EMCU2D, UFTDI_TYPE_8U232AM)}, 244 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_PCMSFU, UFTDI_TYPE_8U232AM)}, 245 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EMCU2H, UFTDI_TYPE_8U232AM)}, 246 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MAXSTREAM, UFTDI_TYPE_8U232AM)}, 247 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CTI_USB_NANO_485, UFTDI_TYPE_8U232AM)}, 248 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CTI_USB_MINI_485, UFTDI_TYPE_8U232AM)}, 249 {USB_VPI(USB_VENDOR_SIIG2, USB_PRODUCT_SIIG2_US2308, UFTDI_TYPE_8U232AM)}, 250 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_VALUECAN, UFTDI_TYPE_8U232AM)}, 251 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_NEOVI, UFTDI_TYPE_8U232AM)}, 252 {USB_VPI(USB_VENDOR_BBELECTRONICS, USB_PRODUCT_BBELECTRONICS_USOTL4, UFTDI_TYPE_8U232AM)}, 253 {USB_VPI(USB_VENDOR_MARVELL, USB_PRODUCT_MARVELL_SHEEVAPLUG, UFTDI_TYPE_8U232AM)}, 254 {USB_VPI(USB_VENDOR_MELCO, USB_PRODUCT_MELCO_PCOPRS1, UFTDI_TYPE_8U232AM)}, 255 {USB_VPI(USB_VENDOR_RATOC, USB_PRODUCT_RATOC_REXUSB60F, UFTDI_TYPE_8U232AM)}, 256}; 257 258static int 259uftdi_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 274static int 275uftdi_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 337detach: 338 uftdi_detach(dev); 339 return (ENXIO); 340} 341 342static int 343uftdi_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 354static void 355uftdi_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 390static void 391uftdi_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: 401tr_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 427static void 428uftdi_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: 479tr_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 494static void 495uftdi_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 513static void 514uftdi_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 532static void 533uftdi_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 557static int 558uftdi_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 654static int 655uftdi_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 665static void 666uftdi_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 706static void 707uftdi_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 718static void 719uftdi_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 726static void 727uftdi_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 734static void 735uftdi_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 742static void 743uftdi_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 *------------------------------------------------------------------------*/ 757static uint8_t 758uftdi_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 814done: 815 *rate = result; 816 return (0); 817} 818 819static void 820uftdi_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