uftdi.c revision 192499
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 192499 2009-05-21 00:04:17Z 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 "usbdevs.h" 52#include <dev/usb/usb.h> 53#include <dev/usb/usb_mfunc.h> 54#include <dev/usb/usb_error.h> 55#include <dev/usb/usb_cdc.h> 56 57#define USB_DEBUG_VAR uftdi_debug 58 59#include <dev/usb/usb_core.h> 60#include <dev/usb/usb_debug.h> 61#include <dev/usb/usb_process.h> 62#include <dev/usb/usb_request.h> 63#include <dev/usb/usb_lookup.h> 64#include <dev/usb/usb_util.h> 65#include <dev/usb/usb_busdma.h> 66 67#include <dev/usb/serial/usb_serial.h> 68#include <dev/usb/serial/uftdi_reg.h> 69 70#if USB_DEBUG 71static int uftdi_debug = 0; 72 73SYSCTL_NODE(_hw_usb2, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi"); 74SYSCTL_INT(_hw_usb2_uftdi, OID_AUTO, debug, CTLFLAG_RW, 75 &uftdi_debug, 0, "Debug level"); 76#endif 77 78#define UFTDI_CONFIG_INDEX 0 79#define UFTDI_IFACE_INDEX 0 80 81#define UFTDI_IBUFSIZE 64 /* bytes, maximum number of bytes per 82 * frame */ 83#define UFTDI_OBUFSIZE 64 /* bytes, cannot be increased due to 84 * do size encoding */ 85 86enum { 87 UFTDI_BULK_DT_WR, 88 UFTDI_BULK_DT_RD, 89 UFTDI_N_TRANSFER, 90}; 91 92struct uftdi_softc { 93 struct usb2_com_super_softc sc_super_ucom; 94 struct usb2_com_softc sc_ucom; 95 96 struct usb2_device *sc_udev; 97 struct usb2_xfer *sc_xfer[UFTDI_N_TRANSFER]; 98 device_t sc_dev; 99 struct mtx sc_mtx; 100 101 uint32_t sc_unit; 102 enum uftdi_type sc_type; 103 104 uint16_t sc_last_lcr; 105 106 uint8_t sc_iface_index; 107 uint8_t sc_hdrlen; 108 uint8_t sc_msr; 109 uint8_t sc_lsr; 110 111 uint8_t sc_name[16]; 112}; 113 114struct uftdi_param_config { 115 uint16_t rate; 116 uint16_t lcr; 117 uint8_t v_start; 118 uint8_t v_stop; 119 uint8_t v_flow; 120}; 121 122/* prototypes */ 123 124static device_probe_t uftdi_probe; 125static device_attach_t uftdi_attach; 126static device_detach_t uftdi_detach; 127 128static usb2_callback_t uftdi_write_callback; 129static usb2_callback_t uftdi_read_callback; 130 131static void uftdi_cfg_open(struct usb2_com_softc *); 132static void uftdi_cfg_set_dtr(struct usb2_com_softc *, uint8_t); 133static void uftdi_cfg_set_rts(struct usb2_com_softc *, uint8_t); 134static void uftdi_cfg_set_break(struct usb2_com_softc *, uint8_t); 135static int uftdi_set_parm_soft(struct termios *, 136 struct uftdi_param_config *, uint8_t); 137static int uftdi_pre_param(struct usb2_com_softc *, struct termios *); 138static void uftdi_cfg_param(struct usb2_com_softc *, struct termios *); 139static void uftdi_cfg_get_status(struct usb2_com_softc *, uint8_t *, 140 uint8_t *); 141static void uftdi_start_read(struct usb2_com_softc *); 142static void uftdi_stop_read(struct usb2_com_softc *); 143static void uftdi_start_write(struct usb2_com_softc *); 144static void uftdi_stop_write(struct usb2_com_softc *); 145static uint8_t uftdi_8u232am_getrate(uint32_t, uint16_t *); 146 147static const struct usb2_config uftdi_config[UFTDI_N_TRANSFER] = { 148 149 [UFTDI_BULK_DT_WR] = { 150 .type = UE_BULK, 151 .endpoint = UE_ADDR_ANY, 152 .direction = UE_DIR_OUT, 153 .bufsize = UFTDI_OBUFSIZE, 154 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 155 .callback = &uftdi_write_callback, 156 }, 157 158 [UFTDI_BULK_DT_RD] = { 159 .type = UE_BULK, 160 .endpoint = UE_ADDR_ANY, 161 .direction = UE_DIR_IN, 162 .bufsize = UFTDI_IBUFSIZE, 163 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 164 .callback = &uftdi_read_callback, 165 }, 166}; 167 168static const struct usb2_com_callback uftdi_callback = { 169 .usb2_com_cfg_get_status = &uftdi_cfg_get_status, 170 .usb2_com_cfg_set_dtr = &uftdi_cfg_set_dtr, 171 .usb2_com_cfg_set_rts = &uftdi_cfg_set_rts, 172 .usb2_com_cfg_set_break = &uftdi_cfg_set_break, 173 .usb2_com_cfg_param = &uftdi_cfg_param, 174 .usb2_com_cfg_open = &uftdi_cfg_open, 175 .usb2_com_pre_param = &uftdi_pre_param, 176 .usb2_com_start_read = &uftdi_start_read, 177 .usb2_com_stop_read = &uftdi_stop_read, 178 .usb2_com_start_write = &uftdi_start_write, 179 .usb2_com_stop_write = &uftdi_stop_write, 180}; 181 182static device_method_t uftdi_methods[] = { 183 /* Device interface */ 184 DEVMETHOD(device_probe, uftdi_probe), 185 DEVMETHOD(device_attach, uftdi_attach), 186 DEVMETHOD(device_detach, uftdi_detach), 187 188 {0, 0} 189}; 190 191static devclass_t uftdi_devclass; 192 193static driver_t uftdi_driver = { 194 .name = "uftdi", 195 .methods = uftdi_methods, 196 .size = sizeof(struct uftdi_softc), 197}; 198 199DRIVER_MODULE(uftdi, uhub, uftdi_driver, uftdi_devclass, NULL, 0); 200MODULE_DEPEND(uftdi, ucom, 1, 1, 1); 201MODULE_DEPEND(uftdi, usb, 1, 1, 1); 202 203static struct usb2_device_id uftdi_devs[] = { 204 {USB_VPI(USB_VENDOR_ATMEL, USB_PRODUCT_ATMEL_STK541, UFTDI_TYPE_8U232AM)}, 205 {USB_VPI(USB_VENDOR_DRESDENELEKTRONIK, USB_PRODUCT_DRESDENELEKTRONIK_SENSORTERMINALBOARD, UFTDI_TYPE_8U232AM)}, 206 {USB_VPI(USB_VENDOR_DRESDENELEKTRONIK, USB_PRODUCT_DRESDENELEKTRONIK_WIRELESSHANDHELDTERMINAL, UFTDI_TYPE_8U232AM)}, 207 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U100AX, UFTDI_TYPE_SIO)}, 208 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_2232C, UFTDI_TYPE_8U232AM)}, 209 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U232AM, UFTDI_TYPE_8U232AM)}, 210 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U232AM4, UFTDI_TYPE_8U232AM)}, 211 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SEMC_DSS20, UFTDI_TYPE_8U232AM)}, 212 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_631, UFTDI_TYPE_8U232AM)}, 213 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_632, UFTDI_TYPE_8U232AM)}, 214 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_633, UFTDI_TYPE_8U232AM)}, 215 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_634, UFTDI_TYPE_8U232AM)}, 216 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_635, UFTDI_TYPE_8U232AM)}, 217 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_USBSERIAL, UFTDI_TYPE_8U232AM)}, 218 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MX2_3, UFTDI_TYPE_8U232AM)}, 219 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MX4_5, UFTDI_TYPE_8U232AM)}, 220 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LK202, UFTDI_TYPE_8U232AM)}, 221 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LK204, UFTDI_TYPE_8U232AM)}, 222 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M, UFTDI_TYPE_8U232AM)}, 223 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S, UFTDI_TYPE_8U232AM)}, 224 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U, UFTDI_TYPE_8U232AM)}, 225 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EISCOU, UFTDI_TYPE_8U232AM)}, 226 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_UOPTBR, UFTDI_TYPE_8U232AM)}, 227 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EMCU2D, UFTDI_TYPE_8U232AM)}, 228 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_PCMSFU, UFTDI_TYPE_8U232AM)}, 229 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EMCU2H, UFTDI_TYPE_8U232AM)}, 230 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MAXSTREAM, UFTDI_TYPE_8U232AM)}, 231 {USB_VPI(USB_VENDOR_SIIG2, USB_PRODUCT_SIIG2_US2308, UFTDI_TYPE_8U232AM)}, 232 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_VALUECAN, UFTDI_TYPE_8U232AM)}, 233 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_NEOVI, UFTDI_TYPE_8U232AM)}, 234 {USB_VPI(USB_VENDOR_BBELECTRONICS, USB_PRODUCT_BBELECTRONICS_USOTL4, UFTDI_TYPE_8U232AM)}, 235 {USB_VPI(USB_VENDOR_MELCO, USB_PRODUCT_MELCO_PCOPRS1, UFTDI_TYPE_8U232AM)}, 236}; 237 238static int 239uftdi_probe(device_t dev) 240{ 241 struct usb2_attach_arg *uaa = device_get_ivars(dev); 242 243 if (uaa->usb_mode != USB_MODE_HOST) { 244 return (ENXIO); 245 } 246 if (uaa->info.bConfigIndex != UFTDI_CONFIG_INDEX) { 247 return (ENXIO); 248 } 249 /* attach to all present interfaces */ 250 251 return (usb2_lookup_id_by_uaa(uftdi_devs, sizeof(uftdi_devs), uaa)); 252} 253 254static int 255uftdi_attach(device_t dev) 256{ 257 struct usb2_attach_arg *uaa = device_get_ivars(dev); 258 struct uftdi_softc *sc = device_get_softc(dev); 259 int error; 260 261 sc->sc_udev = uaa->device; 262 sc->sc_dev = dev; 263 sc->sc_unit = device_get_unit(dev); 264 265 device_set_usb2_desc(dev); 266 mtx_init(&sc->sc_mtx, "uftdi", NULL, MTX_DEF); 267 268 snprintf(sc->sc_name, sizeof(sc->sc_name), 269 "%s", device_get_nameunit(dev)); 270 271 DPRINTF("\n"); 272 273 sc->sc_iface_index = uaa->info.bIfaceIndex; 274 sc->sc_type = USB_GET_DRIVER_INFO(uaa); 275 276 switch (sc->sc_type) { 277 case UFTDI_TYPE_SIO: 278 sc->sc_hdrlen = 1; 279 break; 280 case UFTDI_TYPE_8U232AM: 281 default: 282 sc->sc_hdrlen = 0; 283 break; 284 } 285 286 error = usb2_transfer_setup(uaa->device, 287 &sc->sc_iface_index, sc->sc_xfer, uftdi_config, 288 UFTDI_N_TRANSFER, sc, &sc->sc_mtx); 289 290 if (error) { 291 device_printf(dev, "allocating USB " 292 "transfers failed!\n"); 293 goto detach; 294 } 295 sc->sc_ucom.sc_portno = FTDI_PIT_SIOA + uaa->info.bIfaceNum; 296 297 /* clear stall at first run */ 298 mtx_lock(&sc->sc_mtx); 299 usb2_transfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_WR]); 300 usb2_transfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_RD]); 301 mtx_unlock(&sc->sc_mtx); 302 303 /* set a valid "lcr" value */ 304 305 sc->sc_last_lcr = 306 (FTDI_SIO_SET_DATA_STOP_BITS_2 | 307 FTDI_SIO_SET_DATA_PARITY_NONE | 308 FTDI_SIO_SET_DATA_BITS(8)); 309 310 error = usb2_com_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 311 &uftdi_callback, &sc->sc_mtx); 312 if (error) { 313 goto detach; 314 } 315 return (0); /* success */ 316 317detach: 318 uftdi_detach(dev); 319 return (ENXIO); 320} 321 322static int 323uftdi_detach(device_t dev) 324{ 325 struct uftdi_softc *sc = device_get_softc(dev); 326 327 usb2_com_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 328 usb2_transfer_unsetup(sc->sc_xfer, UFTDI_N_TRANSFER); 329 mtx_destroy(&sc->sc_mtx); 330 331 return (0); 332} 333 334static void 335uftdi_cfg_open(struct usb2_com_softc *ucom) 336{ 337 struct uftdi_softc *sc = ucom->sc_parent; 338 uint16_t wIndex = ucom->sc_portno; 339 struct usb2_device_request req; 340 341 DPRINTF(""); 342 343 /* perform a full reset on the device */ 344 345 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 346 req.bRequest = FTDI_SIO_RESET; 347 USETW(req.wValue, FTDI_SIO_RESET_SIO); 348 USETW(req.wIndex, wIndex); 349 USETW(req.wLength, 0); 350 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 351 &req, NULL, 0, 1000); 352 353 /* turn on RTS/CTS flow control */ 354 355 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 356 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 357 USETW(req.wValue, 0); 358 USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, wIndex); 359 USETW(req.wLength, 0); 360 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 361 &req, NULL, 0, 1000); 362 363 /* 364 * NOTE: with the new UCOM layer there will always be a 365 * "uftdi_cfg_param()" call after "open()", so there is no need for 366 * "open()" to configure anything 367 */ 368} 369 370static void 371uftdi_write_callback(struct usb2_xfer *xfer) 372{ 373 struct uftdi_softc *sc = xfer->priv_sc; 374 uint32_t actlen; 375 uint8_t buf[1]; 376 377 switch (USB_GET_STATE(xfer)) { 378 case USB_ST_SETUP: 379 case USB_ST_TRANSFERRED: 380tr_setup: 381 if (usb2_com_get_data(&sc->sc_ucom, xfer->frbuffers, 382 sc->sc_hdrlen, UFTDI_OBUFSIZE - sc->sc_hdrlen, 383 &actlen)) { 384 385 if (sc->sc_hdrlen > 0) { 386 buf[0] = 387 FTDI_OUT_TAG(actlen, sc->sc_ucom.sc_portno); 388 usb2_copy_in(xfer->frbuffers, 0, buf, 1); 389 } 390 xfer->frlengths[0] = actlen + sc->sc_hdrlen; 391 usb2_start_hardware(xfer); 392 } 393 return; 394 395 default: /* Error */ 396 if (xfer->error != USB_ERR_CANCELLED) { 397 /* try to clear stall first */ 398 xfer->flags.stall_pipe = 1; 399 goto tr_setup; 400 } 401 return; 402 } 403} 404 405static void 406uftdi_read_callback(struct usb2_xfer *xfer) 407{ 408 struct uftdi_softc *sc = xfer->priv_sc; 409 uint8_t buf[2]; 410 uint8_t ftdi_msr; 411 uint8_t msr; 412 uint8_t lsr; 413 414 switch (USB_GET_STATE(xfer)) { 415 case USB_ST_TRANSFERRED: 416 417 if (xfer->actlen < 2) { 418 goto tr_setup; 419 } 420 usb2_copy_out(xfer->frbuffers, 0, buf, 2); 421 422 ftdi_msr = FTDI_GET_MSR(buf); 423 lsr = FTDI_GET_LSR(buf); 424 425 msr = 0; 426 if (ftdi_msr & FTDI_SIO_CTS_MASK) 427 msr |= SER_CTS; 428 if (ftdi_msr & FTDI_SIO_DSR_MASK) 429 msr |= SER_DSR; 430 if (ftdi_msr & FTDI_SIO_RI_MASK) 431 msr |= SER_RI; 432 if (ftdi_msr & FTDI_SIO_RLSD_MASK) 433 msr |= SER_DCD; 434 435 if ((sc->sc_msr != msr) || 436 ((sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK))) { 437 DPRINTF("status change msr=0x%02x (0x%02x) " 438 "lsr=0x%02x (0x%02x)\n", msr, sc->sc_msr, 439 lsr, sc->sc_lsr); 440 441 sc->sc_msr = msr; 442 sc->sc_lsr = lsr; 443 444 usb2_com_status_change(&sc->sc_ucom); 445 } 446 xfer->actlen -= 2; 447 448 if (xfer->actlen > 0) { 449 usb2_com_put_data(&sc->sc_ucom, xfer->frbuffers, 2, 450 xfer->actlen); 451 } 452 case USB_ST_SETUP: 453tr_setup: 454 xfer->frlengths[0] = xfer->max_data_length; 455 usb2_start_hardware(xfer); 456 return; 457 458 default: /* Error */ 459 if (xfer->error != USB_ERR_CANCELLED) { 460 /* try to clear stall first */ 461 xfer->flags.stall_pipe = 1; 462 goto tr_setup; 463 } 464 return; 465 } 466} 467 468static void 469uftdi_cfg_set_dtr(struct usb2_com_softc *ucom, uint8_t onoff) 470{ 471 struct uftdi_softc *sc = ucom->sc_parent; 472 uint16_t wIndex = ucom->sc_portno; 473 uint16_t wValue; 474 struct usb2_device_request req; 475 476 wValue = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW; 477 478 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 479 req.bRequest = FTDI_SIO_MODEM_CTRL; 480 USETW(req.wValue, wValue); 481 USETW(req.wIndex, wIndex); 482 USETW(req.wLength, 0); 483 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 484 &req, NULL, 0, 1000); 485} 486 487static void 488uftdi_cfg_set_rts(struct usb2_com_softc *ucom, uint8_t onoff) 489{ 490 struct uftdi_softc *sc = ucom->sc_parent; 491 uint16_t wIndex = ucom->sc_portno; 492 uint16_t wValue; 493 struct usb2_device_request req; 494 495 wValue = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW; 496 497 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 498 req.bRequest = FTDI_SIO_MODEM_CTRL; 499 USETW(req.wValue, wValue); 500 USETW(req.wIndex, wIndex); 501 USETW(req.wLength, 0); 502 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 503 &req, NULL, 0, 1000); 504} 505 506static void 507uftdi_cfg_set_break(struct usb2_com_softc *ucom, uint8_t onoff) 508{ 509 struct uftdi_softc *sc = ucom->sc_parent; 510 uint16_t wIndex = ucom->sc_portno; 511 uint16_t wValue; 512 struct usb2_device_request req; 513 514 if (onoff) { 515 sc->sc_last_lcr |= FTDI_SIO_SET_BREAK; 516 } else { 517 sc->sc_last_lcr &= ~FTDI_SIO_SET_BREAK; 518 } 519 520 wValue = sc->sc_last_lcr; 521 522 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 523 req.bRequest = FTDI_SIO_SET_DATA; 524 USETW(req.wValue, wValue); 525 USETW(req.wIndex, wIndex); 526 USETW(req.wLength, 0); 527 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 528 &req, NULL, 0, 1000); 529} 530 531static int 532uftdi_set_parm_soft(struct termios *t, 533 struct uftdi_param_config *cfg, uint8_t type) 534{ 535 bzero(cfg, sizeof(*cfg)); 536 537 switch (type) { 538 case UFTDI_TYPE_SIO: 539 switch (t->c_ospeed) { 540 case 300: 541 cfg->rate = ftdi_sio_b300; 542 break; 543 case 600: 544 cfg->rate = ftdi_sio_b600; 545 break; 546 case 1200: 547 cfg->rate = ftdi_sio_b1200; 548 break; 549 case 2400: 550 cfg->rate = ftdi_sio_b2400; 551 break; 552 case 4800: 553 cfg->rate = ftdi_sio_b4800; 554 break; 555 case 9600: 556 cfg->rate = ftdi_sio_b9600; 557 break; 558 case 19200: 559 cfg->rate = ftdi_sio_b19200; 560 break; 561 case 38400: 562 cfg->rate = ftdi_sio_b38400; 563 break; 564 case 57600: 565 cfg->rate = ftdi_sio_b57600; 566 break; 567 case 115200: 568 cfg->rate = ftdi_sio_b115200; 569 break; 570 default: 571 return (EINVAL); 572 } 573 break; 574 575 case UFTDI_TYPE_8U232AM: 576 if (uftdi_8u232am_getrate(t->c_ospeed, &cfg->rate)) { 577 return (EINVAL); 578 } 579 break; 580 } 581 582 if (t->c_cflag & CSTOPB) 583 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_2; 584 else 585 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_1; 586 587 if (t->c_cflag & PARENB) { 588 if (t->c_cflag & PARODD) { 589 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_ODD; 590 } else { 591 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_EVEN; 592 } 593 } else { 594 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_NONE; 595 } 596 597 switch (t->c_cflag & CSIZE) { 598 case CS5: 599 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(5); 600 break; 601 602 case CS6: 603 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(6); 604 break; 605 606 case CS7: 607 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(7); 608 break; 609 610 case CS8: 611 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(8); 612 break; 613 } 614 615 if (t->c_cflag & CRTSCTS) { 616 cfg->v_flow = FTDI_SIO_RTS_CTS_HS; 617 } else if (t->c_iflag & (IXON | IXOFF)) { 618 cfg->v_flow = FTDI_SIO_XON_XOFF_HS; 619 cfg->v_start = t->c_cc[VSTART]; 620 cfg->v_stop = t->c_cc[VSTOP]; 621 } else { 622 cfg->v_flow = FTDI_SIO_DISABLE_FLOW_CTRL; 623 } 624 625 return (0); 626} 627 628static int 629uftdi_pre_param(struct usb2_com_softc *ucom, struct termios *t) 630{ 631 struct uftdi_softc *sc = ucom->sc_parent; 632 struct uftdi_param_config cfg; 633 634 DPRINTF("\n"); 635 636 return (uftdi_set_parm_soft(t, &cfg, sc->sc_type)); 637} 638 639static void 640uftdi_cfg_param(struct usb2_com_softc *ucom, struct termios *t) 641{ 642 struct uftdi_softc *sc = ucom->sc_parent; 643 uint16_t wIndex = ucom->sc_portno; 644 struct uftdi_param_config cfg; 645 struct usb2_device_request req; 646 647 if (uftdi_set_parm_soft(t, &cfg, sc->sc_type)) { 648 /* should not happen */ 649 return; 650 } 651 sc->sc_last_lcr = cfg.lcr; 652 653 DPRINTF("\n"); 654 655 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 656 req.bRequest = FTDI_SIO_SET_BAUD_RATE; 657 USETW(req.wValue, cfg.rate); 658 USETW(req.wIndex, wIndex); 659 USETW(req.wLength, 0); 660 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 661 &req, NULL, 0, 1000); 662 663 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 664 req.bRequest = FTDI_SIO_SET_DATA; 665 USETW(req.wValue, cfg.lcr); 666 USETW(req.wIndex, wIndex); 667 USETW(req.wLength, 0); 668 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 669 &req, NULL, 0, 1000); 670 671 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 672 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 673 USETW2(req.wValue, cfg.v_stop, cfg.v_start); 674 USETW2(req.wIndex, cfg.v_flow, wIndex); 675 USETW(req.wLength, 0); 676 usb2_com_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 677 &req, NULL, 0, 1000); 678} 679 680static void 681uftdi_cfg_get_status(struct usb2_com_softc *ucom, uint8_t *lsr, uint8_t *msr) 682{ 683 struct uftdi_softc *sc = ucom->sc_parent; 684 685 DPRINTF("msr=0x%02x lsr=0x%02x\n", 686 sc->sc_msr, sc->sc_lsr); 687 688 *msr = sc->sc_msr; 689 *lsr = sc->sc_lsr; 690} 691 692static void 693uftdi_start_read(struct usb2_com_softc *ucom) 694{ 695 struct uftdi_softc *sc = ucom->sc_parent; 696 697 usb2_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_RD]); 698} 699 700static void 701uftdi_stop_read(struct usb2_com_softc *ucom) 702{ 703 struct uftdi_softc *sc = ucom->sc_parent; 704 705 usb2_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_RD]); 706} 707 708static void 709uftdi_start_write(struct usb2_com_softc *ucom) 710{ 711 struct uftdi_softc *sc = ucom->sc_parent; 712 713 usb2_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_WR]); 714} 715 716static void 717uftdi_stop_write(struct usb2_com_softc *ucom) 718{ 719 struct uftdi_softc *sc = ucom->sc_parent; 720 721 usb2_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_WR]); 722} 723 724/*------------------------------------------------------------------------* 725 * uftdi_8u232am_getrate 726 * 727 * Return values: 728 * 0: Success 729 * Else: Failure 730 *------------------------------------------------------------------------*/ 731static uint8_t 732uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate) 733{ 734 /* Table of the nearest even powers-of-2 for values 0..15. */ 735 static const uint8_t roundoff[16] = { 736 0, 2, 2, 4, 4, 4, 8, 8, 737 8, 8, 8, 8, 16, 16, 16, 16, 738 }; 739 uint32_t d; 740 uint32_t freq; 741 uint16_t result; 742 743 if ((speed < 178) || (speed > ((3000000 * 100) / 97))) 744 return (1); /* prevent numerical overflow */ 745 746 /* Special cases for 2M and 3M. */ 747 if ((speed >= ((3000000 * 100) / 103)) && 748 (speed <= ((3000000 * 100) / 97))) { 749 result = 0; 750 goto done; 751 } 752 if ((speed >= ((2000000 * 100) / 103)) && 753 (speed <= ((2000000 * 100) / 97))) { 754 result = 1; 755 goto done; 756 } 757 d = (FTDI_8U232AM_FREQ << 4) / speed; 758 d = (d & ~15) + roundoff[d & 15]; 759 760 if (d < FTDI_8U232AM_MIN_DIV) 761 d = FTDI_8U232AM_MIN_DIV; 762 else if (d > FTDI_8U232AM_MAX_DIV) 763 d = FTDI_8U232AM_MAX_DIV; 764 765 /* 766 * Calculate the frequency needed for "d" to exactly divide down to 767 * our target "speed", and check that the actual frequency is within 768 * 3% of this. 769 */ 770 freq = (speed * d); 771 if ((freq < ((FTDI_8U232AM_FREQ * 1600ULL) / 103)) || 772 (freq > ((FTDI_8U232AM_FREQ * 1600ULL) / 97))) 773 return (1); 774 775 /* 776 * Pack the divisor into the resultant value. The lower 14-bits 777 * hold the integral part, while the upper 2 bits encode the 778 * fractional component: either 0, 0.5, 0.25, or 0.125. 779 */ 780 result = (d >> 4); 781 if (d & 8) 782 result |= 0x4000; 783 else if (d & 4) 784 result |= 0x8000; 785 else if (d & 2) 786 result |= 0xc000; 787 788done: 789 *rate = result; 790 return (0); 791} 792