uftdi.c revision 184610
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/usb2/serial/uftdi2.c 184610 2008-11-04 02:31:03Z alfred $"); 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 <dev/usb2/include/usb2_devid.h> 52#include <dev/usb2/include/usb2_standard.h> 53#include <dev/usb2/include/usb2_mfunc.h> 54#include <dev/usb2/include/usb2_error.h> 55#include <dev/usb2/include/usb2_cdc.h> 56 57#define USB_DEBUG_VAR uftdi_debug 58 59#include <dev/usb2/core/usb2_core.h> 60#include <dev/usb2/core/usb2_debug.h> 61#include <dev/usb2/core/usb2_process.h> 62#include <dev/usb2/core/usb2_config_td.h> 63#include <dev/usb2/core/usb2_request.h> 64#include <dev/usb2/core/usb2_lookup.h> 65#include <dev/usb2/core/usb2_util.h> 66#include <dev/usb2/core/usb2_busdma.h> 67 68#include <dev/usb2/serial/usb2_serial.h> 69#include <dev/usb2/serial/uftdi2_reg.h> 70 71#if USB_DEBUG 72static int uftdi_debug = 0; 73 74SYSCTL_NODE(_hw_usb2, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi"); 75SYSCTL_INT(_hw_usb2_uftdi, OID_AUTO, debug, CTLFLAG_RW, 76 &uftdi_debug, 0, "Debug level"); 77#endif 78 79#define UFTDI_CONFIG_INDEX 0 80#define UFTDI_IFACE_INDEX 0 81#define UFTDI_ENDPT_MAX 4 82 83#define UFTDI_IBUFSIZE 64 /* bytes, maximum number of bytes per 84 * frame */ 85#define UFTDI_OBUFSIZE 64 /* bytes, cannot be increased due to 86 * do size encoding */ 87 88struct uftdi_softc { 89 struct usb2_com_super_softc sc_super_ucom; 90 struct usb2_com_softc sc_ucom; 91 92 struct usb2_device *sc_udev; 93 struct usb2_xfer *sc_xfer[UFTDI_ENDPT_MAX]; 94 device_t sc_dev; 95 96 uint32_t sc_unit; 97 enum uftdi_type sc_type; 98 99 uint16_t sc_last_lcr; 100 101 uint8_t sc_iface_index; 102 uint8_t sc_hdrlen; 103 104 uint8_t sc_msr; 105 uint8_t sc_lsr; 106 107 uint8_t sc_flag; 108#define UFTDI_FLAG_WRITE_STALL 0x01 109#define UFTDI_FLAG_READ_STALL 0x02 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_write_clear_stall_callback; 130static usb2_callback_t uftdi_read_callback; 131static usb2_callback_t uftdi_read_clear_stall_callback; 132 133static void uftdi_cfg_do_request(struct uftdi_softc *sc, struct usb2_device_request *req, void *data); 134static void uftdi_cfg_open(struct usb2_com_softc *ucom); 135static void uftdi_cfg_set_dtr(struct usb2_com_softc *ucom, uint8_t onoff); 136static void uftdi_cfg_set_rts(struct usb2_com_softc *ucom, uint8_t onoff); 137static void uftdi_cfg_set_break(struct usb2_com_softc *ucom, uint8_t onoff); 138static int uftdi_set_parm_soft(struct termios *t, struct uftdi_param_config *cfg, uint8_t type); 139static int uftdi_pre_param(struct usb2_com_softc *ucom, struct termios *t); 140static void uftdi_cfg_param(struct usb2_com_softc *ucom, struct termios *t); 141static void uftdi_cfg_get_status(struct usb2_com_softc *ucom, uint8_t *lsr, uint8_t *msr); 142static void uftdi_start_read(struct usb2_com_softc *ucom); 143static void uftdi_stop_read(struct usb2_com_softc *ucom); 144static void uftdi_start_write(struct usb2_com_softc *ucom); 145static void uftdi_stop_write(struct usb2_com_softc *ucom); 146static uint8_t uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate); 147 148static const struct usb2_config uftdi_config[UFTDI_ENDPT_MAX] = { 149 150 [0] = { 151 .type = UE_BULK, 152 .endpoint = UE_ADDR_ANY, 153 .direction = UE_DIR_OUT, 154 .mh.bufsize = UFTDI_OBUFSIZE, 155 .mh.flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 156 .mh.callback = &uftdi_write_callback, 157 }, 158 159 [1] = { 160 .type = UE_BULK, 161 .endpoint = UE_ADDR_ANY, 162 .direction = UE_DIR_IN, 163 .mh.bufsize = UFTDI_IBUFSIZE, 164 .mh.flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 165 .mh.callback = &uftdi_read_callback, 166 }, 167 168 [2] = { 169 .type = UE_CONTROL, 170 .endpoint = 0x00, /* Control pipe */ 171 .direction = UE_DIR_ANY, 172 .mh.bufsize = sizeof(struct usb2_device_request), 173 .mh.flags = {}, 174 .mh.callback = &uftdi_write_clear_stall_callback, 175 .mh.timeout = 1000, /* 1 second */ 176 .mh.interval = 50, /* 50ms */ 177 }, 178 179 [3] = { 180 .type = UE_CONTROL, 181 .endpoint = 0x00, /* Control pipe */ 182 .direction = UE_DIR_ANY, 183 .mh.bufsize = sizeof(struct usb2_device_request), 184 .mh.flags = {}, 185 .mh.callback = &uftdi_read_clear_stall_callback, 186 .mh.timeout = 1000, /* 1 second */ 187 .mh.interval = 50, /* 50ms */ 188 }, 189}; 190 191static const struct usb2_com_callback uftdi_callback = { 192 .usb2_com_cfg_get_status = &uftdi_cfg_get_status, 193 .usb2_com_cfg_set_dtr = &uftdi_cfg_set_dtr, 194 .usb2_com_cfg_set_rts = &uftdi_cfg_set_rts, 195 .usb2_com_cfg_set_break = &uftdi_cfg_set_break, 196 .usb2_com_cfg_param = &uftdi_cfg_param, 197 .usb2_com_cfg_open = &uftdi_cfg_open, 198 .usb2_com_pre_param = &uftdi_pre_param, 199 .usb2_com_start_read = &uftdi_start_read, 200 .usb2_com_stop_read = &uftdi_stop_read, 201 .usb2_com_start_write = &uftdi_start_write, 202 .usb2_com_stop_write = &uftdi_stop_write, 203}; 204 205static device_method_t uftdi_methods[] = { 206 /* Device interface */ 207 DEVMETHOD(device_probe, uftdi_probe), 208 DEVMETHOD(device_attach, uftdi_attach), 209 DEVMETHOD(device_detach, uftdi_detach), 210 211 {0, 0} 212}; 213 214static devclass_t uftdi_devclass; 215 216static driver_t uftdi_driver = { 217 .name = "uftdi", 218 .methods = uftdi_methods, 219 .size = sizeof(struct uftdi_softc), 220}; 221 222DRIVER_MODULE(uftdi, ushub, uftdi_driver, uftdi_devclass, NULL, 0); 223MODULE_DEPEND(uftdi, usb2_serial, 1, 1, 1); 224MODULE_DEPEND(uftdi, usb2_core, 1, 1, 1); 225MODULE_DEPEND(uftdi, ucom, UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER); 226 227static struct usb2_device_id uftdi_devs[] = { 228 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U100AX, UFTDI_TYPE_SIO)}, 229 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_2232C, UFTDI_TYPE_8U232AM)}, 230 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SERIAL_8U232AM, UFTDI_TYPE_8U232AM)}, 231 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_SEMC_DSS20, UFTDI_TYPE_8U232AM)}, 232 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_631, UFTDI_TYPE_8U232AM)}, 233 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_632, UFTDI_TYPE_8U232AM)}, 234 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_633, UFTDI_TYPE_8U232AM)}, 235 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_634, UFTDI_TYPE_8U232AM)}, 236 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_CFA_635, UFTDI_TYPE_8U232AM)}, 237 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_USBSERIAL, UFTDI_TYPE_8U232AM)}, 238 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MX2_3, UFTDI_TYPE_8U232AM)}, 239 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_MX4_5, UFTDI_TYPE_8U232AM)}, 240 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LK202, UFTDI_TYPE_8U232AM)}, 241 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_LK204, UFTDI_TYPE_8U232AM)}, 242 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M, UFTDI_TYPE_8U232AM)}, 243 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S, UFTDI_TYPE_8U232AM)}, 244 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U, UFTDI_TYPE_8U232AM)}, 245 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EISCOU, UFTDI_TYPE_8U232AM)}, 246 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_UOPTBR, UFTDI_TYPE_8U232AM)}, 247 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EMCU2D, UFTDI_TYPE_8U232AM)}, 248 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_PCMSFU, UFTDI_TYPE_8U232AM)}, 249 {USB_VPI(USB_VENDOR_FTDI, USB_PRODUCT_FTDI_EMCU2H, UFTDI_TYPE_8U232AM)}, 250 {USB_VPI(USB_VENDOR_SIIG2, USB_PRODUCT_SIIG2_US2308, UFTDI_TYPE_8U232AM)}, 251 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_VALUECAN, UFTDI_TYPE_8U232AM)}, 252 {USB_VPI(USB_VENDOR_INTREPIDCS, USB_PRODUCT_INTREPIDCS_NEOVI, UFTDI_TYPE_8U232AM)}, 253 {USB_VPI(USB_VENDOR_BBELECTRONICS, USB_PRODUCT_BBELECTRONICS_USOTL4, UFTDI_TYPE_8U232AM)}, 254 {USB_VPI(USB_VENDOR_MELCO, USB_PRODUCT_MELCO_PCOPRS1, UFTDI_TYPE_8U232AM)}, 255}; 256 257static int 258uftdi_probe(device_t dev) 259{ 260 struct usb2_attach_arg *uaa = device_get_ivars(dev); 261 262 if (uaa->usb2_mode != USB_MODE_HOST) { 263 return (ENXIO); 264 } 265 if (uaa->info.bConfigIndex != UFTDI_CONFIG_INDEX) { 266 return (ENXIO); 267 } 268 /* attach to all present interfaces */ 269 270 return (usb2_lookup_id_by_uaa(uftdi_devs, sizeof(uftdi_devs), uaa)); 271} 272 273static int 274uftdi_attach(device_t dev) 275{ 276 struct usb2_attach_arg *uaa = device_get_ivars(dev); 277 struct uftdi_softc *sc = device_get_softc(dev); 278 int error; 279 280 if (sc == NULL) { 281 return (ENOMEM); 282 } 283 sc->sc_udev = uaa->device; 284 sc->sc_dev = dev; 285 sc->sc_unit = device_get_unit(dev); 286 287 device_set_usb2_desc(dev); 288 289 snprintf(sc->sc_name, sizeof(sc->sc_name), 290 "%s", device_get_nameunit(dev)); 291 292 DPRINTF("\n"); 293 294 sc->sc_iface_index = uaa->info.bIfaceIndex; 295 sc->sc_type = USB_GET_DRIVER_INFO(uaa); 296 297 switch (sc->sc_type) { 298 case UFTDI_TYPE_SIO: 299 sc->sc_hdrlen = 1; 300 break; 301 case UFTDI_TYPE_8U232AM: 302 default: 303 sc->sc_hdrlen = 0; 304 break; 305 } 306 307 error = usb2_transfer_setup(uaa->device, 308 &sc->sc_iface_index, sc->sc_xfer, uftdi_config, 309 UFTDI_ENDPT_MAX, sc, &Giant); 310 311 if (error) { 312 device_printf(dev, "allocating USB " 313 "transfers failed!\n"); 314 goto detach; 315 } 316 sc->sc_ucom.sc_portno = FTDI_PIT_SIOA + uaa->info.bIfaceNum; 317 318 /* clear stall at first run */ 319 320 sc->sc_flag |= (UFTDI_FLAG_WRITE_STALL | 321 UFTDI_FLAG_READ_STALL); 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 = usb2_com_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 331 &uftdi_callback, &Giant); 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 usb2_com_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 348 349 usb2_transfer_unsetup(sc->sc_xfer, UFTDI_ENDPT_MAX); 350 351 return (0); 352} 353 354static void 355uftdi_cfg_do_request(struct uftdi_softc *sc, struct usb2_device_request *req, 356 void *data) 357{ 358 uint16_t length; 359 usb2_error_t err; 360 361 if (usb2_com_cfg_is_gone(&sc->sc_ucom)) { 362 goto error; 363 } 364 err = usb2_do_request_flags 365 (sc->sc_udev, &Giant, req, data, 0, NULL, 1000); 366 367 if (err) { 368 369 DPRINTFN(0, "device request failed, err=%s " 370 "(ignored)\n", usb2_errstr(err)); 371 372error: 373 length = UGETW(req->wLength); 374 375 if ((req->bmRequestType & UT_READ) && length) { 376 bzero(data, length); 377 } 378 } 379 return; 380} 381 382static void 383uftdi_cfg_open(struct usb2_com_softc *ucom) 384{ 385 struct uftdi_softc *sc = ucom->sc_parent; 386 uint16_t wIndex = ucom->sc_portno; 387 struct usb2_device_request req; 388 389 DPRINTF(""); 390 391 /* perform a full reset on the device */ 392 393 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 394 req.bRequest = FTDI_SIO_RESET; 395 USETW(req.wValue, FTDI_SIO_RESET_SIO); 396 USETW(req.wIndex, wIndex); 397 USETW(req.wLength, 0); 398 uftdi_cfg_do_request(sc, &req, NULL); 399 400 /* turn on RTS/CTS flow control */ 401 402 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 403 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 404 USETW(req.wValue, 0); 405 USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, wIndex); 406 USETW(req.wLength, 0); 407 uftdi_cfg_do_request(sc, &req, NULL); 408 409 /* 410 * NOTE: with the new UCOM layer there will always be a 411 * "uftdi_cfg_param()" call after "open()", so there is no need for 412 * "open()" to configure anything 413 */ 414 return; 415} 416 417static void 418uftdi_write_callback(struct usb2_xfer *xfer) 419{ 420 struct uftdi_softc *sc = xfer->priv_sc; 421 uint32_t actlen; 422 uint8_t buf[1]; 423 424 switch (USB_GET_STATE(xfer)) { 425 case USB_ST_SETUP: 426 case USB_ST_TRANSFERRED: 427 if (sc->sc_flag & UFTDI_FLAG_WRITE_STALL) { 428 usb2_transfer_start(sc->sc_xfer[2]); 429 return; 430 } 431 if (usb2_com_get_data(&sc->sc_ucom, xfer->frbuffers, 432 sc->sc_hdrlen, UFTDI_OBUFSIZE - sc->sc_hdrlen, 433 &actlen)) { 434 435 if (sc->sc_hdrlen > 0) { 436 buf[0] = 437 FTDI_OUT_TAG(actlen, sc->sc_ucom.sc_portno); 438 usb2_copy_in(xfer->frbuffers, 0, buf, 1); 439 } 440 xfer->frlengths[0] = actlen + sc->sc_hdrlen; 441 usb2_start_hardware(xfer); 442 } 443 return; 444 445 default: /* Error */ 446 if (xfer->error != USB_ERR_CANCELLED) { 447 sc->sc_flag |= UFTDI_FLAG_WRITE_STALL; 448 usb2_transfer_start(sc->sc_xfer[2]); 449 } 450 return; 451 452 } 453} 454 455static void 456uftdi_write_clear_stall_callback(struct usb2_xfer *xfer) 457{ 458 struct uftdi_softc *sc = xfer->priv_sc; 459 struct usb2_xfer *xfer_other = sc->sc_xfer[0]; 460 461 if (usb2_clear_stall_callback(xfer, xfer_other)) { 462 DPRINTF("stall cleared\n"); 463 sc->sc_flag &= ~UFTDI_FLAG_WRITE_STALL; 464 usb2_transfer_start(xfer_other); 465 } 466 return; 467} 468 469static void 470uftdi_read_callback(struct usb2_xfer *xfer) 471{ 472 struct uftdi_softc *sc = xfer->priv_sc; 473 uint8_t buf[2]; 474 uint8_t msr; 475 uint8_t lsr; 476 477 switch (USB_GET_STATE(xfer)) { 478 case USB_ST_TRANSFERRED: 479 480 if (xfer->actlen < 2) { 481 goto tr_setup; 482 } 483 usb2_copy_out(xfer->frbuffers, 0, buf, 2); 484 485 msr = FTDI_GET_MSR(buf); 486 lsr = FTDI_GET_LSR(buf); 487 488 if ((sc->sc_msr != msr) || 489 ((sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK))) { 490 DPRINTF("status change msr=0x%02x (0x%02x) " 491 "lsr=0x%02x (0x%02x)\n", msr, sc->sc_msr, 492 lsr, sc->sc_lsr); 493 494 sc->sc_msr = msr; 495 sc->sc_lsr = lsr; 496 497 usb2_com_status_change(&sc->sc_ucom); 498 } 499 xfer->actlen -= 2; 500 501 if (xfer->actlen > 0) { 502 usb2_com_put_data(&sc->sc_ucom, xfer->frbuffers, 2, 503 xfer->actlen); 504 } 505 case USB_ST_SETUP: 506tr_setup: 507 if (sc->sc_flag & UFTDI_FLAG_READ_STALL) { 508 usb2_transfer_start(sc->sc_xfer[3]); 509 } else { 510 xfer->frlengths[0] = xfer->max_data_length; 511 usb2_start_hardware(xfer); 512 } 513 return; 514 515 default: /* Error */ 516 if (xfer->error != USB_ERR_CANCELLED) { 517 sc->sc_flag |= UFTDI_FLAG_READ_STALL; 518 usb2_transfer_start(sc->sc_xfer[3]); 519 } 520 return; 521 522 } 523} 524 525static void 526uftdi_read_clear_stall_callback(struct usb2_xfer *xfer) 527{ 528 struct uftdi_softc *sc = xfer->priv_sc; 529 struct usb2_xfer *xfer_other = sc->sc_xfer[1]; 530 531 if (usb2_clear_stall_callback(xfer, xfer_other)) { 532 DPRINTF("stall cleared\n"); 533 sc->sc_flag &= ~UFTDI_FLAG_READ_STALL; 534 usb2_transfer_start(xfer_other); 535 } 536 return; 537} 538 539static void 540uftdi_cfg_set_dtr(struct usb2_com_softc *ucom, uint8_t onoff) 541{ 542 struct uftdi_softc *sc = ucom->sc_parent; 543 uint16_t wIndex = ucom->sc_portno; 544 uint16_t wValue; 545 struct usb2_device_request req; 546 547 wValue = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW; 548 549 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 550 req.bRequest = FTDI_SIO_MODEM_CTRL; 551 USETW(req.wValue, wValue); 552 USETW(req.wIndex, wIndex); 553 USETW(req.wLength, 0); 554 uftdi_cfg_do_request(sc, &req, NULL); 555 return; 556} 557 558static void 559uftdi_cfg_set_rts(struct usb2_com_softc *ucom, uint8_t onoff) 560{ 561 struct uftdi_softc *sc = ucom->sc_parent; 562 uint16_t wIndex = ucom->sc_portno; 563 uint16_t wValue; 564 struct usb2_device_request req; 565 566 wValue = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW; 567 568 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 569 req.bRequest = FTDI_SIO_MODEM_CTRL; 570 USETW(req.wValue, wValue); 571 USETW(req.wIndex, wIndex); 572 USETW(req.wLength, 0); 573 uftdi_cfg_do_request(sc, &req, NULL); 574 return; 575} 576 577static void 578uftdi_cfg_set_break(struct usb2_com_softc *ucom, uint8_t onoff) 579{ 580 struct uftdi_softc *sc = ucom->sc_parent; 581 uint16_t wIndex = ucom->sc_portno; 582 uint16_t wValue; 583 struct usb2_device_request req; 584 585 if (onoff) { 586 sc->sc_last_lcr |= FTDI_SIO_SET_BREAK; 587 } else { 588 sc->sc_last_lcr &= ~FTDI_SIO_SET_BREAK; 589 } 590 591 wValue = sc->sc_last_lcr; 592 593 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 594 req.bRequest = FTDI_SIO_SET_DATA; 595 USETW(req.wValue, wValue); 596 USETW(req.wIndex, wIndex); 597 USETW(req.wLength, 0); 598 uftdi_cfg_do_request(sc, &req, NULL); 599 return; 600} 601 602static int 603uftdi_set_parm_soft(struct termios *t, 604 struct uftdi_param_config *cfg, uint8_t type) 605{ 606 bzero(cfg, sizeof(*cfg)); 607 608 switch (type) { 609 case UFTDI_TYPE_SIO: 610 switch (t->c_ospeed) { 611 case 300: 612 cfg->rate = ftdi_sio_b300; 613 break; 614 case 600: 615 cfg->rate = ftdi_sio_b600; 616 break; 617 case 1200: 618 cfg->rate = ftdi_sio_b1200; 619 break; 620 case 2400: 621 cfg->rate = ftdi_sio_b2400; 622 break; 623 case 4800: 624 cfg->rate = ftdi_sio_b4800; 625 break; 626 case 9600: 627 cfg->rate = ftdi_sio_b9600; 628 break; 629 case 19200: 630 cfg->rate = ftdi_sio_b19200; 631 break; 632 case 38400: 633 cfg->rate = ftdi_sio_b38400; 634 break; 635 case 57600: 636 cfg->rate = ftdi_sio_b57600; 637 break; 638 case 115200: 639 cfg->rate = ftdi_sio_b115200; 640 break; 641 default: 642 return (EINVAL); 643 } 644 break; 645 646 case UFTDI_TYPE_8U232AM: 647 if (uftdi_8u232am_getrate(t->c_ospeed, &cfg->rate)) { 648 return (EINVAL); 649 } 650 break; 651 } 652 653 if (t->c_cflag & CSTOPB) 654 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_2; 655 else 656 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_1; 657 658 if (t->c_cflag & PARENB) { 659 if (t->c_cflag & PARODD) { 660 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_ODD; 661 } else { 662 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_EVEN; 663 } 664 } else { 665 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_NONE; 666 } 667 668 switch (t->c_cflag & CSIZE) { 669 case CS5: 670 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(5); 671 break; 672 673 case CS6: 674 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(6); 675 break; 676 677 case CS7: 678 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(7); 679 break; 680 681 case CS8: 682 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(8); 683 break; 684 } 685 686 if (t->c_cflag & CRTSCTS) { 687 cfg->v_flow = FTDI_SIO_RTS_CTS_HS; 688 } else if (t->c_iflag & (IXON | IXOFF)) { 689 cfg->v_flow = FTDI_SIO_XON_XOFF_HS; 690 cfg->v_start = t->c_cc[VSTART]; 691 cfg->v_stop = t->c_cc[VSTOP]; 692 } else { 693 cfg->v_flow = FTDI_SIO_DISABLE_FLOW_CTRL; 694 } 695 696 return (0); 697} 698 699static int 700uftdi_pre_param(struct usb2_com_softc *ucom, struct termios *t) 701{ 702 struct uftdi_softc *sc = ucom->sc_parent; 703 struct uftdi_param_config cfg; 704 705 DPRINTF("\n"); 706 707 return (uftdi_set_parm_soft(t, &cfg, sc->sc_type)); 708} 709 710static void 711uftdi_cfg_param(struct usb2_com_softc *ucom, struct termios *t) 712{ 713 struct uftdi_softc *sc = ucom->sc_parent; 714 uint16_t wIndex = ucom->sc_portno; 715 struct uftdi_param_config cfg; 716 struct usb2_device_request req; 717 718 if (uftdi_set_parm_soft(t, &cfg, sc->sc_type)) { 719 /* should not happen */ 720 return; 721 } 722 sc->sc_last_lcr = cfg.lcr; 723 724 DPRINTF("\n"); 725 726 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 727 req.bRequest = FTDI_SIO_SET_BAUD_RATE; 728 USETW(req.wValue, cfg.rate); 729 USETW(req.wIndex, wIndex); 730 USETW(req.wLength, 0); 731 uftdi_cfg_do_request(sc, &req, NULL); 732 733 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 734 req.bRequest = FTDI_SIO_SET_DATA; 735 USETW(req.wValue, cfg.lcr); 736 USETW(req.wIndex, wIndex); 737 USETW(req.wLength, 0); 738 uftdi_cfg_do_request(sc, &req, NULL); 739 740 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 741 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 742 USETW2(req.wValue, cfg.v_stop, cfg.v_start); 743 USETW2(req.wIndex, cfg.v_flow, wIndex); 744 USETW(req.wLength, 0); 745 uftdi_cfg_do_request(sc, &req, NULL); 746 747 return; 748} 749 750static void 751uftdi_cfg_get_status(struct usb2_com_softc *ucom, uint8_t *lsr, uint8_t *msr) 752{ 753 struct uftdi_softc *sc = ucom->sc_parent; 754 755 DPRINTF("msr=0x%02x lsr=0x%02x\n", 756 sc->sc_msr, sc->sc_lsr); 757 758 *msr = sc->sc_msr; 759 *lsr = sc->sc_lsr; 760 return; 761} 762 763static void 764uftdi_start_read(struct usb2_com_softc *ucom) 765{ 766 struct uftdi_softc *sc = ucom->sc_parent; 767 768 usb2_transfer_start(sc->sc_xfer[1]); 769 return; 770} 771 772static void 773uftdi_stop_read(struct usb2_com_softc *ucom) 774{ 775 struct uftdi_softc *sc = ucom->sc_parent; 776 777 usb2_transfer_stop(sc->sc_xfer[3]); 778 usb2_transfer_stop(sc->sc_xfer[1]); 779 return; 780} 781 782static void 783uftdi_start_write(struct usb2_com_softc *ucom) 784{ 785 struct uftdi_softc *sc = ucom->sc_parent; 786 787 usb2_transfer_start(sc->sc_xfer[0]); 788 return; 789} 790 791static void 792uftdi_stop_write(struct usb2_com_softc *ucom) 793{ 794 struct uftdi_softc *sc = ucom->sc_parent; 795 796 usb2_transfer_stop(sc->sc_xfer[2]); 797 usb2_transfer_stop(sc->sc_xfer[0]); 798 return; 799} 800 801/*------------------------------------------------------------------------* 802 * uftdi_8u232am_getrate 803 * 804 * Return values: 805 * 0: Success 806 * Else: Failure 807 *------------------------------------------------------------------------*/ 808static uint8_t 809uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate) 810{ 811 /* Table of the nearest even powers-of-2 for values 0..15. */ 812 static const uint8_t roundoff[16] = { 813 0, 2, 2, 4, 4, 4, 8, 8, 814 8, 8, 8, 8, 16, 16, 16, 16, 815 }; 816 uint32_t d; 817 uint32_t freq; 818 uint16_t result; 819 820 if ((speed < 178) || (speed > ((3000000 * 100) / 97))) 821 return (1); /* prevent numerical overflow */ 822 823 /* Special cases for 2M and 3M. */ 824 if ((speed >= ((3000000 * 100) / 103)) && 825 (speed <= ((3000000 * 100) / 97))) { 826 result = 0; 827 goto done; 828 } 829 if ((speed >= ((2000000 * 100) / 103)) && 830 (speed <= ((2000000 * 100) / 97))) { 831 result = 1; 832 goto done; 833 } 834 d = (FTDI_8U232AM_FREQ << 4) / speed; 835 d = (d & ~15) + roundoff[d & 15]; 836 837 if (d < FTDI_8U232AM_MIN_DIV) 838 d = FTDI_8U232AM_MIN_DIV; 839 else if (d > FTDI_8U232AM_MAX_DIV) 840 d = FTDI_8U232AM_MAX_DIV; 841 842 /* 843 * Calculate the frequency needed for "d" to exactly divide down to 844 * our target "speed", and check that the actual frequency is within 845 * 3% of this. 846 */ 847 freq = (speed * d); 848 if ((freq < ((FTDI_8U232AM_FREQ * 1600ULL) / 103)) || 849 (freq > ((FTDI_8U232AM_FREQ * 1600ULL) / 97))) 850 return (1); 851 852 /* 853 * Pack the divisor into the resultant value. The lower 14-bits 854 * hold the integral part, while the upper 2 bits encode the 855 * fractional component: either 0, 0.5, 0.25, or 0.125. 856 */ 857 result = (d >> 4); 858 if (d & 8) 859 result |= 0x4000; 860 else if (d & 4) 861 result |= 0x8000; 862 else if (d & 2) 863 result |= 0xc000; 864 865done: 866 *rate = result; 867 return (0); 868} 869